CbC/CbC_gcc: zlib/examples/gun.c annotate

author	kent <kent@cr.ie.u-ryukyu.ac.jp>
date	Sun, 07 Feb 2010 18:27:48 +0900
parents
children	04ced10e8804

rev	line source
51 ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	1 /* gun.c -- simple gunzip to give an example of the use of inflateBack()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	2 * Copyright (C) 2003, 2005 Mark Adler
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	3 * For conditions of distribution and use, see copyright notice in zlib.h
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	4 Version 1.3 12 June 2005 Mark Adler */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	5
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	6 /* Version history:
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	7 1.0 16 Feb 2003 First version for testing of inflateBack()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	8 1.1 21 Feb 2005 Decompress concatenated gzip streams
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	9 Remove use of "this" variable (C++ keyword)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	10 Fix return value for in()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	11 Improve allocation failure checking
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	12 Add typecasting for void * structures
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	13 Add -h option for command version and usage
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	14 Add a bunch of comments
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	15 1.2 20 Mar 2005 Add Unix compress (LZW) decompression
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	16 Copy file attributes from input file to output file
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	17 1.3 12 Jun 2005 Add casts for error messages [Oberhumer]
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	18 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	19
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	20 /*
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	21 gun [ -t ] [ name ... ]
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	22
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	23 decompresses the data in the named gzip files. If no arguments are given,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	24 gun will decompress from stdin to stdout. The names must end in .gz, -gz,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	25 .z, -z, _z, or .Z. The uncompressed data will be written to a file name
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	26 with the suffix stripped. On success, the original file is deleted. On
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	27 failure, the output file is deleted. For most failures, the command will
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	28 continue to process the remaining names on the command line. A memory
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	29 allocation failure will abort the command. If -t is specified, then the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	30 listed files or stdin will be tested as gzip files for integrity (without
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	31 checking for a proper suffix), no output will be written, and no files
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	32 will be deleted.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	33
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	34 Like gzip, gun allows concatenated gzip streams and will decompress them,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	35 writing all of the uncompressed data to the output. Unlike gzip, gun allows
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	36 an empty file on input, and will produce no error writing an empty output
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	37 file.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	38
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	39 gun will also decompress files made by Unix compress, which uses LZW
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	40 compression. These files are automatically detected by virtue of their
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	41 magic header bytes. Since the end of Unix compress stream is marked by the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	42 end-of-file, they cannot be concantenated. If a Unix compress stream is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	43 encountered in an input file, it is the last stream in that file.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	44
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	45 Like gunzip and uncompress, the file attributes of the orignal compressed
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	46 file are maintained in the final uncompressed file, to the extent that the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	47 user permissions allow it.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	48
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	49 On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	50 1.2.4) is on the same file, when gun is linked with zlib 1.2.2. Also the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	51 LZW decompression provided by gun is about twice as fast as the standard
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	52 Unix uncompress command.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	53 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	54
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	55 /* external functions and related types and constants */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	56 #include <stdio.h> /* fprintf() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	57 #include <stdlib.h> /* malloc(), free() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	58 #include <string.h> /* strerror(), strcmp(), strlen(), memcpy() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	59 #include <errno.h> /* errno */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	60 #include <fcntl.h> /* open() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	61 #include <unistd.h> /* read(), write(), close(), chown(), unlink() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	62 #include <sys/types.h>
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	63 #include <sys/stat.h> /* stat(), chmod() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	64 #include <utime.h> /* utime() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	65 #include "zlib.h" /* inflateBackInit(), inflateBack(), */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	66 /* inflateBackEnd(), crc32() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	67
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	68 /* function declaration */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	69 #define local static
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	70
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	71 /* buffer constants */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	72 #define SIZE 32768U /* input and output buffer sizes */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	73 #define PIECE 16384 /* limits i/o chunks for 16-bit int case */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	74
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	75 /* structure for infback() to pass to input function in() -- it maintains the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	76 input file and a buffer of size SIZE */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	77 struct ind {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	78 int infile;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	79 unsigned char *inbuf;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	80 };
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	81
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	82 /* Load input buffer, assumed to be empty, and return bytes loaded and a
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	83 pointer to them. read() is called until the buffer is full, or until it
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	84 returns end-of-file or error. Return 0 on error. */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	85 local unsigned in(void in_desc, unsigned char *buf)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	86 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	87 int ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	88 unsigned len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	89 unsigned char *next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	90 struct ind me = (struct ind )in_desc;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	91
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	92 next = me->inbuf;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	93 *buf = next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	94 len = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	95 do {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	96 ret = PIECE;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	97 if ((unsigned)ret > SIZE - len)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	98 ret = (int)(SIZE - len);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	99 ret = (int)read(me->infile, next, ret);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	100 if (ret == -1) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	101 len = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	102 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	103 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	104 next += ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	105 len += ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	106 } while (ret != 0 && len < SIZE);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	107 return len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	108 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	109
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	110 /* structure for infback() to pass to output function out() -- it maintains the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	111 output file, a running CRC-32 check on the output and the total number of
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	112 bytes output, both for checking against the gzip trailer. (The length in
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	113 the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	114 the output is greater than 4 GB.) */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	115 struct outd {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	116 int outfile;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	117 int check; /* true if checking crc and total */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	118 unsigned long crc;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	119 unsigned long total;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	120 };
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	121
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	122 /* Write output buffer and update the CRC-32 and total bytes written. write()
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	123 is called until all of the output is written or an error is encountered.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	124 On success out() returns 0. For a write failure, out() returns 1. If the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	125 output file descriptor is -1, then nothing is written.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	126 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	127 local int out(void out_desc, unsigned char buf, unsigned len)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	128 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	129 int ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	130 struct outd me = (struct outd )out_desc;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	131
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	132 if (me->check) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	133 me->crc = crc32(me->crc, buf, len);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	134 me->total += len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	135 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	136 if (me->outfile != -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	137 do {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	138 ret = PIECE;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	139 if ((unsigned)ret > len)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	140 ret = (int)len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	141 ret = (int)write(me->outfile, buf, ret);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	142 if (ret == -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	143 return 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	144 buf += ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	145 len -= ret;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	146 } while (len != 0);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	147 return 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	148 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	149
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	150 /* next input byte macro for use inside lunpipe() and gunpipe() */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	151 #define NEXT() (have ? 0 : (have = in(indp, &next)), \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	152 last = have ? (have--, (int)(*next++)) : -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	153
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	154 /* memory for gunpipe() and lunpipe() --
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	155 the first 256 entries of prefix[] and suffix[] are never used, could
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	156 have offset the index, but it's faster to waste the memory */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	157 unsigned char inbuf[SIZE]; /* input buffer */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	158 unsigned char outbuf[SIZE]; /* output buffer */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	159 unsigned short prefix[65536]; /* index to LZW prefix string */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	160 unsigned char suffix[65536]; /* one-character LZW suffix */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	161 unsigned char match[65280 + 2]; /* buffer for reversed match or gzip
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	162 32K sliding window */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	163
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	164 /* throw out what's left in the current bits byte buffer (this is a vestigial
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	165 aspect of the compressed data format derived from an implementation that
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	166 made use of a special VAX machine instruction!) */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	167 #define FLUSHCODE() \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	168 do { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	169 left = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	170 rem = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	171 if (chunk > have) { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	172 chunk -= have; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	173 have = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	174 if (NEXT() == -1) \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	175 break; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	176 chunk--; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	177 if (chunk > have) { \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	178 chunk = have = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	179 break; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	180 } \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	181 } \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	182 have -= chunk; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	183 next += chunk; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	184 chunk = 0; \
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	185 } while (0)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	186
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	187 /* Decompress a compress (LZW) file from indp to outfile. The compress magic
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	188 header (two bytes) has already been read and verified. There are have bytes
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	189 of buffered input at next. strm is used for passing error information back
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	190 to gunpipe().
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	191
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	192 lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	193 file, read error, or write error (a write error indicated by strm->next_in
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	194 not equal to Z_NULL), or Z_DATA_ERROR for invalid input.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	195 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	196 local int lunpipe(unsigned have, unsigned char next, struct ind indp,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	197 int outfile, z_stream *strm)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	198 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	199 int last; /* last byte read by NEXT(), or -1 if EOF */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	200 int chunk; /* bytes left in current chunk */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	201 int left; /* bits left in rem */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	202 unsigned rem; /* unused bits from input */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	203 int bits; /* current bits per code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	204 unsigned code; /* code, table traversal index */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	205 unsigned mask; /* mask for current bits codes */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	206 int max; /* maximum bits per code for this stream */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	207 int flags; /* compress flags, then block compress flag */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	208 unsigned end; /* last valid entry in prefix/suffix tables */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	209 unsigned temp; /* current code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	210 unsigned prev; /* previous code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	211 unsigned final; /* last character written for previous code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	212 unsigned stack; /* next position for reversed string */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	213 unsigned outcnt; /* bytes in output buffer */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	214 struct outd outd; /* output structure */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	215
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	216 /* set up output */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	217 outd.outfile = outfile;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	218 outd.check = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	219
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	220 /* process remainder of compress header -- a flags byte */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	221 flags = NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	222 if (last == -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	223 return Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	224 if (flags & 0x60) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	225 strm->msg = (char *)"unknown lzw flags set";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	226 return Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	227 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	228 max = flags & 0x1f;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	229 if (max < 9 \|\| max > 16) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	230 strm->msg = (char *)"lzw bits out of range";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	231 return Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	232 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	233 if (max == 9) /* 9 doesn't really mean 9 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	234 max = 10;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	235 flags &= 0x80; /* true if block compress */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	236
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	237 /* clear table */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	238 bits = 9;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	239 mask = 0x1ff;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	240 end = flags ? 256 : 255;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	241
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	242 /* set up: get first 9-bit code, which is the first decompressed byte, but
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	243 don't create a table entry until the next code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	244 if (NEXT() == -1) /* no compressed data is ok */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	245 return Z_OK;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	246 final = prev = (unsigned)last; /* low 8 bits of code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	247 if (NEXT() == -1) /* missing a bit */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	248 return Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	249 if (last & 1) { /* code must be < 256 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	250 strm->msg = (char *)"invalid lzw code";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	251 return Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	252 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	253 rem = (unsigned)last >> 1; /* remaining 7 bits */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	254 left = 7;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	255 chunk = bits - 2; /* 7 bytes left in this chunk */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	256 outbuf[0] = (unsigned char)final; /* write first decompressed byte */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	257 outcnt = 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	258
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	259 /* decode codes */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	260 stack = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	261 for (;;) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	262 /* if the table will be full after this, increment the code size */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	263 if (end >= mask && bits < max) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	264 FLUSHCODE();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	265 bits++;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	266 mask <<= 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	267 mask++;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	268 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	269
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	270 /* get a code of length bits */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	271 if (chunk == 0) /* decrement chunk modulo bits */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	272 chunk = bits;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	273 code = rem; /* low bits of code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	274 if (NEXT() == -1) { /* EOF is end of compressed data */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	275 /* write remaining buffered output */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	276 if (outcnt && out(&outd, outbuf, outcnt)) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	277 strm->next_in = outbuf; /* signal write error */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	278 return Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	279 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	280 return Z_OK;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	281 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	282 code += (unsigned)last << left; /* middle (or high) bits of code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	283 left += 8;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	284 chunk--;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	285 if (bits > left) { /* need more bits */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	286 if (NEXT() == -1) /* can't end in middle of code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	287 return Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	288 code += (unsigned)last << left; /* high bits of code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	289 left += 8;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	290 chunk--;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	291 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	292 code &= mask; /* mask to current code length */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	293 left -= bits; /* number of unused bits */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	294 rem = (unsigned)last >> (8 - left); /* unused bits from last byte */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	295
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	296 /* process clear code (256) */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	297 if (code == 256 && flags) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	298 FLUSHCODE();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	299 bits = 9; /* initialize bits and mask */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	300 mask = 0x1ff;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	301 end = 255; /* empty table */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	302 continue; /* get next code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	303 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	304
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	305 /* special code to reuse last match */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	306 temp = code; /* save the current code */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	307 if (code > end) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	308 /* Be picky on the allowed code here, and make sure that the code
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	309 we drop through (prev) will be a valid index so that random
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	310 input does not cause an exception. The code != end + 1 check is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	311 empirically derived, and not checked in the original uncompress
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	312 code. If this ever causes a problem, that check could be safely
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	313 removed. Leaving this check in greatly improves gun's ability
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	314 to detect random or corrupted input after a compress header.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	315 In any case, the prev > end check must be retained. */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	316 if (code != end + 1 \|\| prev > end) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	317 strm->msg = (char *)"invalid lzw code";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	318 return Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	319 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	320 match[stack++] = (unsigned char)final;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	321 code = prev;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	322 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	323
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	324 /* walk through linked list to generate output in reverse order */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	325 while (code >= 256) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	326 match[stack++] = suffix[code];
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	327 code = prefix[code];
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	328 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	329 match[stack++] = (unsigned char)code;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	330 final = code;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	331
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	332 /* link new table entry */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	333 if (end < mask) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	334 end++;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	335 prefix[end] = (unsigned short)prev;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	336 suffix[end] = (unsigned char)final;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	337 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	338
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	339 /* set previous code for next iteration */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	340 prev = temp;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	341
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	342 /* write output in forward order */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	343 while (stack > SIZE - outcnt) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	344 while (outcnt < SIZE)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	345 outbuf[outcnt++] = match[--stack];
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	346 if (out(&outd, outbuf, outcnt)) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	347 strm->next_in = outbuf; /* signal write error */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	348 return Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	349 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	350 outcnt = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	351 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	352 do {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	353 outbuf[outcnt++] = match[--stack];
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	354 } while (stack);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	355
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	356 /* loop for next code with final and prev as the last match, rem and
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	357 left provide the first 0..7 bits of the next code, end is the last
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	358 valid table entry */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	359 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	360 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	361
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	362 /* Decompress a gzip file from infile to outfile. strm is assumed to have been
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	363 successfully initialized with inflateBackInit(). The input file may consist
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	364 of a series of gzip streams, in which case all of them will be decompressed
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	365 to the output file. If outfile is -1, then the gzip stream(s) integrity is
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	366 checked and nothing is written.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	367
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	368 The return value is a zlib error code: Z_MEM_ERROR if out of memory,
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	369 Z_DATA_ERROR if the header or the compressed data is invalid, or if the
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	370 trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	371 prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	372 stream) follows a valid gzip stream.
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	373 */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	374 local int gunpipe(z_stream *strm, int infile, int outfile)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	375 {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	376 int ret, first, last;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	377 unsigned have, flags, len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	378 unsigned char *next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	379 struct ind ind, *indp;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	380 struct outd outd;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	381
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	382 /* setup input buffer */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	383 ind.infile = infile;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	384 ind.inbuf = inbuf;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	385 indp = &ind;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	386
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	387 /* decompress concatenated gzip streams */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	388 have = 0; /* no input data read in yet */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	389 first = 1; /* looking for first gzip header */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	390 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	391 for (;;) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	392 /* look for the two magic header bytes for a gzip stream */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	393 if (NEXT() == -1) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	394 ret = Z_OK;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	395 break; /* empty gzip stream is ok */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	396 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	397 if (last != 31 \|\| (NEXT() != 139 && last != 157)) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	398 strm->msg = (char *)"incorrect header check";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	399 ret = first ? Z_DATA_ERROR : Z_ERRNO;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	400 break; /* not a gzip or compress header */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	401 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	402 first = 0; /* next non-header is junk */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	403
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	404 /* process a compress (LZW) file -- can't be concatenated after this */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	405 if (last == 157) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	406 ret = lunpipe(have, next, indp, outfile, strm);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	407 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	408 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	409
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	410 /* process remainder of gzip header */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	411 ret = Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	412 if (NEXT() != 8) { /* only deflate method allowed */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	413 if (last == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	414 strm->msg = (char *)"unknown compression method";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	415 ret = Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	416 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	417 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	418 flags = NEXT(); /* header flags */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	419 NEXT(); /* discard mod time, xflgs, os */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	420 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	421 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	422 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	423 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	424 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	425 if (last == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	426 if (flags & 0xe0) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	427 strm->msg = (char *)"unknown header flags set";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	428 ret = Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	429 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	430 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	431 if (flags & 4) { /* extra field */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	432 len = NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	433 len += (unsigned)(NEXT()) << 8;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	434 if (last == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	435 while (len > have) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	436 len -= have;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	437 have = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	438 if (NEXT() == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	439 len--;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	440 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	441 if (last == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	442 have -= len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	443 next += len;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	444 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	445 if (flags & 8) /* file name */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	446 while (NEXT() != 0 && last != -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	447 ;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	448 if (flags & 16) /* comment */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	449 while (NEXT() != 0 && last != -1)
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	450 ;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	451 if (flags & 2) { /* header crc */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	452 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	453 NEXT();
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	454 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	455 if (last == -1) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	456
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	457 /* set up output */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	458 outd.outfile = outfile;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	459 outd.check = 1;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	460 outd.crc = crc32(0L, Z_NULL, 0);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	461 outd.total = 0;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	462
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	463 /* decompress data to output */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	464 strm->next_in = next;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	465 strm->avail_in = have;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	466 ret = inflateBack(strm, in, indp, out, &outd);
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	467 if (ret != Z_STREAM_END) break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	468 next = strm->next_in;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	469 have = strm->avail_in;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	470 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	471
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	472 /* check trailer */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	473 ret = Z_BUF_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	474 if (NEXT() != (outd.crc & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	475 NEXT() != ((outd.crc >> 8) & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	476 NEXT() != ((outd.crc >> 16) & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	477 NEXT() != ((outd.crc >> 24) & 0xff)) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	478 /* crc error */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	479 if (last != -1) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	480 strm->msg = (char *)"incorrect data check";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	481 ret = Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	482 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	483 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	484 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	485 if (NEXT() != (outd.total & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	486 NEXT() != ((outd.total >> 8) & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	487 NEXT() != ((outd.total >> 16) & 0xff) \|\|
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	488 NEXT() != ((outd.total >> 24) & 0xff)) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	489 /* length error */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	490 if (last != -1) {
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	491 strm->msg = (char *)"incorrect length check";
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	492 ret = Z_DATA_ERROR;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	493 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	494 break;
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	495 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	496
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	497 /* go back and look for another gzip stream */
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	498 }
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	499
ae3a4bfb450b add some files of version 4.4.3 that have been forgotten. kent <kent@cr.ie.u-ryukyu.ac.jp> parents: diff changeset	500 /* clean up and return */

51

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

1 /* gun.c -- simple gunzip to give an example of the use of inflateBack()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

3 * For conditions of distribution and use, see copyright notice in zlib.h

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

4 Version 1.3 12 June 2005 Mark Adler */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

5

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

6 /* Version history:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

7 1.0 16 Feb 2003 First version for testing of inflateBack()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

8 1.1 21 Feb 2005 Decompress concatenated gzip streams

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

9 Remove use of "this" variable (C++ keyword)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

10 Fix return value for in()

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

11 Improve allocation failure checking

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

12 Add typecasting for void * structures

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

13 Add -h option for command version and usage

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

14 Add a bunch of comments

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

15 1.2 20 Mar 2005 Add Unix compress (LZW) decompression

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

16 Copy file attributes from input file to output file

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

17 1.3 12 Jun 2005 Add casts for error messages [Oberhumer]

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

18 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

19

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

20 /*

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

21 gun [ -t ] [ name ... ]

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

22

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

23 decompresses the data in the named gzip files. If no arguments are given,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

24 gun will decompress from stdin to stdout. The names must end in .gz, -gz,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

25 .z, -z, _z, or .Z. The uncompressed data will be written to a file name

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

26 with the suffix stripped. On success, the original file is deleted. On

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

27 failure, the output file is deleted. For most failures, the command will

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

28 continue to process the remaining names on the command line. A memory

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

29 allocation failure will abort the command. If -t is specified, then the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

30 listed files or stdin will be tested as gzip files for integrity (without

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

31 checking for a proper suffix), no output will be written, and no files

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

32 will be deleted.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

33

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

34 Like gzip, gun allows concatenated gzip streams and will decompress them,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

35 writing all of the uncompressed data to the output. Unlike gzip, gun allows

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

36 an empty file on input, and will produce no error writing an empty output

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

37 file.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

38

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

39 gun will also decompress files made by Unix compress, which uses LZW

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

40 compression. These files are automatically detected by virtue of their

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

41 magic header bytes. Since the end of Unix compress stream is marked by the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

42 end-of-file, they cannot be concantenated. If a Unix compress stream is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

43 encountered in an input file, it is the last stream in that file.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

44

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

45 Like gunzip and uncompress, the file attributes of the orignal compressed

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

46 file are maintained in the final uncompressed file, to the extent that the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

47 user permissions allow it.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

48

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

49 On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

50 1.2.4) is on the same file, when gun is linked with zlib 1.2.2. Also the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

51 LZW decompression provided by gun is about twice as fast as the standard

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

52 Unix uncompress command.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

53 */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

54

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

55 /* external functions and related types and constants */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

56 #include <stdio.h> /* fprintf() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

57 #include <stdlib.h> /* malloc(), free() */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

58 #include <string.h> /* strerror(), strcmp(), strlen(), memcpy() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

59 #include <errno.h> /* errno */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

60 #include <fcntl.h> /* open() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

61 #include <unistd.h> /* read(), write(), close(), chown(), unlink() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

62 #include <sys/types.h>

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

63 #include <sys/stat.h> /* stat(), chmod() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

64 #include <utime.h> /* utime() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

65 #include "zlib.h" /* inflateBackInit(), inflateBack(), */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

66 /* inflateBackEnd(), crc32() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

67

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

68 /* function declaration */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

69 #define local static

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

70

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

71 /* buffer constants */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

72 #define SIZE 32768U /* input and output buffer sizes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

73 #define PIECE 16384 /* limits i/o chunks for 16-bit int case */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

74

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

75 /* structure for infback() to pass to input function in() -- it maintains the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

76 input file and a buffer of size SIZE */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

77 struct ind {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

78 int infile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

79 unsigned char *inbuf;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

80 };

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

81

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

82 /* Load input buffer, assumed to be empty, and return bytes loaded and a

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

83 pointer to them. read() is called until the buffer is full, or until it

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

84 returns end-of-file or error. Return 0 on error. */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

85 local unsigned in(void *in_desc, unsigned char **buf)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

86 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

87 int ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

88 unsigned len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

89 unsigned char *next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

90 struct ind *me = (struct ind *)in_desc;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

91

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

92 next = me->inbuf;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

93 *buf = next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

94 len = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

95 do {

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

96 ret = PIECE;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

97 if ((unsigned)ret > SIZE - len)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

98 ret = (int)(SIZE - len);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

99 ret = (int)read(me->infile, next, ret);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

100 if (ret == -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

101 len = 0;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

102 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

103 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

104 next += ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

105 len += ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

106 } while (ret != 0 && len < SIZE);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

107 return len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

108 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

109

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

110 /* structure for infback() to pass to output function out() -- it maintains the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

111 output file, a running CRC-32 check on the output and the total number of

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

112 bytes output, both for checking against the gzip trailer. (The length in

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

113 the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

114 the output is greater than 4 GB.) */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

115 struct outd {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

116 int outfile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

117 int check; /* true if checking crc and total */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

118 unsigned long crc;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

119 unsigned long total;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

120 };

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

121

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

122 /* Write output buffer and update the CRC-32 and total bytes written. write()

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

123 is called until all of the output is written or an error is encountered.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

124 On success out() returns 0. For a write failure, out() returns 1. If the

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

125 output file descriptor is -1, then nothing is written.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

126 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

127 local int out(void *out_desc, unsigned char *buf, unsigned len)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

128 {

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

129 int ret;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

130 struct outd *me = (struct outd *)out_desc;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

131

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

132 if (me->check) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

133 me->crc = crc32(me->crc, buf, len);

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

134 me->total += len;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

135 }

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

136 if (me->outfile != -1)

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

137 do {

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

138 ret = PIECE;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

139 if ((unsigned)ret > len)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

140 ret = (int)len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

141 ret = (int)write(me->outfile, buf, ret);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

142 if (ret == -1)

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

143 return 1;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

144 buf += ret;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

145 len -= ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

146 } while (len != 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

147 return 0;

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

148 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

149

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

150 /* next input byte macro for use inside lunpipe() and gunpipe() */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

151 #define NEXT() (have ? 0 : (have = in(indp, &next)), \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

152 last = have ? (have--, (int)(*next++)) : -1)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

153

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

154 /* memory for gunpipe() and lunpipe() --

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

155 the first 256 entries of prefix[] and suffix[] are never used, could

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

156 have offset the index, but it's faster to waste the memory */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

157 unsigned char inbuf[SIZE]; /* input buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

158 unsigned char outbuf[SIZE]; /* output buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

159 unsigned short prefix[65536]; /* index to LZW prefix string */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

160 unsigned char suffix[65536]; /* one-character LZW suffix */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

161 unsigned char match[65280 + 2]; /* buffer for reversed match or gzip

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

162 32K sliding window */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

163

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

164 /* throw out what's left in the current bits byte buffer (this is a vestigial

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

165 aspect of the compressed data format derived from an implementation that

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

166 made use of a special VAX machine instruction!) */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

167 #define FLUSHCODE() \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

168 do { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

169 left = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

170 rem = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

171 if (chunk > have) { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

172 chunk -= have; \

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

173 have = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

174 if (NEXT() == -1) \

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

175 break; \

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

176 chunk--; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

177 if (chunk > have) { \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

178 chunk = have = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

179 break; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

180 } \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

181 } \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

182 have -= chunk; \

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

183 next += chunk; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

184 chunk = 0; \

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

185 } while (0)

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

186

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

187 /* Decompress a compress (LZW) file from indp to outfile. The compress magic

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

188 header (two bytes) has already been read and verified. There are have bytes

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

189 of buffered input at next. strm is used for passing error information back

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

190 to gunpipe().

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

191

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

192 lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

193 file, read error, or write error (a write error indicated by strm->next_in

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

194 not equal to Z_NULL), or Z_DATA_ERROR for invalid input.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

195 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

196 local int lunpipe(unsigned have, unsigned char *next, struct ind *indp,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

197 int outfile, z_stream *strm)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

198 {

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

199 int last; /* last byte read by NEXT(), or -1 if EOF */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

200 int chunk; /* bytes left in current chunk */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

201 int left; /* bits left in rem */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

202 unsigned rem; /* unused bits from input */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

203 int bits; /* current bits per code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

204 unsigned code; /* code, table traversal index */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

205 unsigned mask; /* mask for current bits codes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

206 int max; /* maximum bits per code for this stream */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

207 int flags; /* compress flags, then block compress flag */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

208 unsigned end; /* last valid entry in prefix/suffix tables */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

209 unsigned temp; /* current code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

210 unsigned prev; /* previous code */

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kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

211 unsigned final; /* last character written for previous code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

212 unsigned stack; /* next position for reversed string */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

213 unsigned outcnt; /* bytes in output buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

214 struct outd outd; /* output structure */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

215

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

216 /* set up output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

217 outd.outfile = outfile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

218 outd.check = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

219

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

220 /* process remainder of compress header -- a flags byte */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

221 flags = NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

222 if (last == -1)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

223 return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

224 if (flags & 0x60) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

225 strm->msg = (char *)"unknown lzw flags set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

226 return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

227 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

228 max = flags & 0x1f;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

229 if (max < 9 || max > 16) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

230 strm->msg = (char *)"lzw bits out of range";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

231 return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

232 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

233 if (max == 9) /* 9 doesn't really mean 9 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

234 max = 10;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

235 flags &= 0x80; /* true if block compress */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

236

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

237 /* clear table */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

238 bits = 9;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

239 mask = 0x1ff;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

240 end = flags ? 256 : 255;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

241

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

242 /* set up: get first 9-bit code, which is the first decompressed byte, but

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

243 don't create a table entry until the next code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

244 if (NEXT() == -1) /* no compressed data is ok */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

245 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

246 final = prev = (unsigned)last; /* low 8 bits of code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

247 if (NEXT() == -1) /* missing a bit */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

248 return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

249 if (last & 1) { /* code must be < 256 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

250 strm->msg = (char *)"invalid lzw code";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

251 return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

252 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

253 rem = (unsigned)last >> 1; /* remaining 7 bits */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

254 left = 7;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

255 chunk = bits - 2; /* 7 bytes left in this chunk */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

256 outbuf[0] = (unsigned char)final; /* write first decompressed byte */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

257 outcnt = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

258

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

259 /* decode codes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

260 stack = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

261 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

262 /* if the table will be full after this, increment the code size */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

263 if (end >= mask && bits < max) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

264 FLUSHCODE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

265 bits++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

266 mask <<= 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

267 mask++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

268 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

269

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

270 /* get a code of length bits */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

271 if (chunk == 0) /* decrement chunk modulo bits */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

272 chunk = bits;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

273 code = rem; /* low bits of code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

274 if (NEXT() == -1) { /* EOF is end of compressed data */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

275 /* write remaining buffered output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

276 if (outcnt && out(&outd, outbuf, outcnt)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

277 strm->next_in = outbuf; /* signal write error */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

278 return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

279 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

280 return Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

281 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

282 code += (unsigned)last << left; /* middle (or high) bits of code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

283 left += 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

284 chunk--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

285 if (bits > left) { /* need more bits */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

286 if (NEXT() == -1) /* can't end in middle of code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

287 return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

288 code += (unsigned)last << left; /* high bits of code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

289 left += 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

290 chunk--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

291 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

292 code &= mask; /* mask to current code length */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

293 left -= bits; /* number of unused bits */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

294 rem = (unsigned)last >> (8 - left); /* unused bits from last byte */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

295

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

296 /* process clear code (256) */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

297 if (code == 256 && flags) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

298 FLUSHCODE();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

299 bits = 9; /* initialize bits and mask */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

300 mask = 0x1ff;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

301 end = 255; /* empty table */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

302 continue; /* get next code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

303 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

304

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

305 /* special code to reuse last match */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

306 temp = code; /* save the current code */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

307 if (code > end) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

308 /* Be picky on the allowed code here, and make sure that the code

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

309 we drop through (prev) will be a valid index so that random

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

310 input does not cause an exception. The code != end + 1 check is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

311 empirically derived, and not checked in the original uncompress

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

312 code. If this ever causes a problem, that check could be safely

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

313 removed. Leaving this check in greatly improves gun's ability

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

314 to detect random or corrupted input after a compress header.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

315 In any case, the prev > end check must be retained. */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

316 if (code != end + 1 || prev > end) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

317 strm->msg = (char *)"invalid lzw code";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

318 return Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

319 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

320 match[stack++] = (unsigned char)final;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

321 code = prev;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

322 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

323

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

324 /* walk through linked list to generate output in reverse order */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

325 while (code >= 256) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

326 match[stack++] = suffix[code];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

327 code = prefix[code];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

328 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

329 match[stack++] = (unsigned char)code;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

330 final = code;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

331

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

332 /* link new table entry */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

333 if (end < mask) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

334 end++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

335 prefix[end] = (unsigned short)prev;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

336 suffix[end] = (unsigned char)final;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

337 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

338

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

339 /* set previous code for next iteration */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

340 prev = temp;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

341

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

342 /* write output in forward order */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

343 while (stack > SIZE - outcnt) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

344 while (outcnt < SIZE)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

345 outbuf[outcnt++] = match[--stack];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

346 if (out(&outd, outbuf, outcnt)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

347 strm->next_in = outbuf; /* signal write error */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

348 return Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

349 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

350 outcnt = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

351 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

352 do {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

353 outbuf[outcnt++] = match[--stack];

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

354 } while (stack);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

355

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

356 /* loop for next code with final and prev as the last match, rem and

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

357 left provide the first 0..7 bits of the next code, end is the last

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

358 valid table entry */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

359 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

360 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

361

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

362 /* Decompress a gzip file from infile to outfile. strm is assumed to have been

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

363 successfully initialized with inflateBackInit(). The input file may consist

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

364 of a series of gzip streams, in which case all of them will be decompressed

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

365 to the output file. If outfile is -1, then the gzip stream(s) integrity is

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

366 checked and nothing is written.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

367

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

368 The return value is a zlib error code: Z_MEM_ERROR if out of memory,

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

369 Z_DATA_ERROR if the header or the compressed data is invalid, or if the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

370 trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

371 prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

372 stream) follows a valid gzip stream.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

373 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

374 local int gunpipe(z_stream *strm, int infile, int outfile)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

375 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

376 int ret, first, last;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

377 unsigned have, flags, len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

378 unsigned char *next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

379 struct ind ind, *indp;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

380 struct outd outd;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

381

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

382 /* setup input buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

383 ind.infile = infile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

384 ind.inbuf = inbuf;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

385 indp = &ind;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

386

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

387 /* decompress concatenated gzip streams */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

388 have = 0; /* no input data read in yet */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

389 first = 1; /* looking for first gzip header */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

390 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

391 for (;;) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

392 /* look for the two magic header bytes for a gzip stream */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

393 if (NEXT() == -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

394 ret = Z_OK;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

395 break; /* empty gzip stream is ok */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

396 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

397 if (last != 31 || (NEXT() != 139 && last != 157)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

398 strm->msg = (char *)"incorrect header check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

399 ret = first ? Z_DATA_ERROR : Z_ERRNO;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

400 break; /* not a gzip or compress header */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

401 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

402 first = 0; /* next non-header is junk */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

403

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

404 /* process a compress (LZW) file -- can't be concatenated after this */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

405 if (last == 157) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

406 ret = lunpipe(have, next, indp, outfile, strm);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

407 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

408 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

409

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

410 /* process remainder of gzip header */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

411 ret = Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

412 if (NEXT() != 8) { /* only deflate method allowed */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

413 if (last == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

414 strm->msg = (char *)"unknown compression method";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

415 ret = Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

416 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

417 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

418 flags = NEXT(); /* header flags */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

419 NEXT(); /* discard mod time, xflgs, os */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

420 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

421 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

422 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

423 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

424 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

425 if (last == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

426 if (flags & 0xe0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

427 strm->msg = (char *)"unknown header flags set";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

428 ret = Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

429 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

430 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

431 if (flags & 4) { /* extra field */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

432 len = NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

433 len += (unsigned)(NEXT()) << 8;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

434 if (last == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

435 while (len > have) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

436 len -= have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

437 have = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

438 if (NEXT() == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

439 len--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

440 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

441 if (last == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

442 have -= len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

443 next += len;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

444 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

445 if (flags & 8) /* file name */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

446 while (NEXT() != 0 && last != -1)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

447 ;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

448 if (flags & 16) /* comment */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

449 while (NEXT() != 0 && last != -1)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

450 ;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

451 if (flags & 2) { /* header crc */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

452 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

453 NEXT();

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

454 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

455 if (last == -1) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

456

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

457 /* set up output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

458 outd.outfile = outfile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

459 outd.check = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

460 outd.crc = crc32(0L, Z_NULL, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

461 outd.total = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

462

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

463 /* decompress data to output */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

464 strm->next_in = next;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

465 strm->avail_in = have;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

466 ret = inflateBack(strm, in, indp, out, &outd);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

467 if (ret != Z_STREAM_END) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

468 next = strm->next_in;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

469 have = strm->avail_in;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

470 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

471

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

472 /* check trailer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

473 ret = Z_BUF_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

474 if (NEXT() != (outd.crc & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

475 NEXT() != ((outd.crc >> 8) & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

476 NEXT() != ((outd.crc >> 16) & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

477 NEXT() != ((outd.crc >> 24) & 0xff)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

478 /* crc error */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

479 if (last != -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

480 strm->msg = (char *)"incorrect data check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

481 ret = Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

482 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

483 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

484 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

485 if (NEXT() != (outd.total & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

486 NEXT() != ((outd.total >> 8) & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

487 NEXT() != ((outd.total >> 16) & 0xff) ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

488 NEXT() != ((outd.total >> 24) & 0xff)) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

489 /* length error */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

490 if (last != -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

491 strm->msg = (char *)"incorrect length check";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

492 ret = Z_DATA_ERROR;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

493 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

494 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

495 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

496

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

497 /* go back and look for another gzip stream */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

498 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

499

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

500 /* clean up and return */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

501 return ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

502 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

503

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

504 /* Copy file attributes, from -> to, as best we can. This is best effort, so

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

505 no errors are reported. The mode bits, including suid, sgid, and the sticky

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

506 bit are copied (if allowed), the owner's user id and group id are copied

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

507 (again if allowed), and the access and modify times are copied. */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

508 local void copymeta(char *from, char *to)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

509 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

510 struct stat was;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

511 struct utimbuf when;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

512

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

513 /* get all of from's Unix meta data, return if not a regular file */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

514 if (stat(from, &was) != 0 || (was.st_mode & S_IFMT) != S_IFREG)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

515 return;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

516

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

517 /* set to's mode bits, ignore errors */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

518 (void)chmod(to, was.st_mode & 07777);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

519

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

520 /* copy owner's user and group, ignore errors */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

521 (void)chown(to, was.st_uid, was.st_gid);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

522

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

523 /* copy access and modify times, ignore errors */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

524 when.actime = was.st_atime;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

525 when.modtime = was.st_mtime;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

526 (void)utime(to, &when);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

527 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

528

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

529 /* Decompress the file inname to the file outnname, of if test is true, just

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

530 decompress without writing and check the gzip trailer for integrity. If

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

531 inname is NULL or an empty string, read from stdin. If outname is NULL or

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

532 an empty string, write to stdout. strm is a pre-initialized inflateBack

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

533 structure. When appropriate, copy the file attributes from inname to

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

534 outname.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

535

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

536 gunzip() returns 1 if there is an out-of-memory error or an unexpected

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

537 return code from gunpipe(). Otherwise it returns 0.

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

538 */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

539 local int gunzip(z_stream *strm, char *inname, char *outname, int test)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

540 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

541 int ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

542 int infile, outfile;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

543

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

544 /* open files */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

545 if (inname == NULL || *inname == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

546 inname = "-";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

547 infile = 0; /* stdin */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

548 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

549 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

550 infile = open(inname, O_RDONLY, 0);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

551 if (infile == -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

552 fprintf(stderr, "gun cannot open %s\n", inname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

553 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

554 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

555 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

556 if (test)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

557 outfile = -1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

558 else if (outname == NULL || *outname == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

559 outname = "-";

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

560 outfile = 1; /* stdout */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

561 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

562 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

563 outfile = open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0666);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

564 if (outfile == -1) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

565 close(infile);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

566 fprintf(stderr, "gun cannot create %s\n", outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

567 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

568 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

569 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

570 errno = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

571

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

572 /* decompress */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

573 ret = gunpipe(strm, infile, outfile);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

574 if (outfile > 2) close(outfile);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

575 if (infile > 2) close(infile);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

576

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

577 /* interpret result */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

578 switch (ret) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

579 case Z_OK:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

580 case Z_ERRNO:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

581 if (infile > 2 && outfile > 2) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

582 copymeta(inname, outname); /* copy attributes */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

583 unlink(inname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

584 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

585 if (ret == Z_ERRNO)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

586 fprintf(stderr, "gun warning: trailing garbage ignored in %s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

587 inname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

588 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

589 case Z_DATA_ERROR:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

590 if (outfile > 2) unlink(outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

591 fprintf(stderr, "gun data error on %s: %s\n", inname, strm->msg);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

592 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

593 case Z_MEM_ERROR:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

594 if (outfile > 2) unlink(outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

595 fprintf(stderr, "gun out of memory error--aborting\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

596 return 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

597 case Z_BUF_ERROR:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

598 if (outfile > 2) unlink(outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

599 if (strm->next_in != Z_NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

600 fprintf(stderr, "gun write error on %s: %s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

601 outname, strerror(errno));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

602 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

603 else if (errno) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

604 fprintf(stderr, "gun read error on %s: %s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

605 inname, strerror(errno));

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

606 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

607 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

608 fprintf(stderr, "gun unexpected end of file on %s\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

609 inname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

610 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

611 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

612 default:

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

613 if (outfile > 2) unlink(outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

614 fprintf(stderr, "gun internal error--aborting\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

615 return 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

616 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

617 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

618 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

619

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

620 /* Process the gun command line arguments. See the command syntax near the

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

621 beginning of this source file. */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

622 int main(int argc, char **argv)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

623 {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

624 int ret, len, test;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

625 char *outname;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

626 unsigned char *window;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

627 z_stream strm;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

628

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

629 /* initialize inflateBack state for repeated use */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

630 window = match; /* reuse LZW match buffer */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

631 strm.zalloc = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

632 strm.zfree = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

633 strm.opaque = Z_NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

634 ret = inflateBackInit(&strm, 15, window);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

635 if (ret != Z_OK) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

636 fprintf(stderr, "gun out of memory error--aborting\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

637 return 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

638 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

639

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

640 /* decompress each file to the same name with the suffix removed */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

641 argc--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

642 argv++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

643 test = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

644 if (argc && strcmp(*argv, "-h") == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

645 fprintf(stderr, "gun 1.3 (12 Jun 2005)\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

647 fprintf(stderr, "usage: gun [-t] [file1.gz [file2.Z ...]]\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

648 return 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

649 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

650 if (argc && strcmp(*argv, "-t") == 0) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

651 test = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

652 argc--;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

653 argv++;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

654 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

655 if (argc)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

656 do {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

657 if (test)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

658 outname = NULL;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

659 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

660 len = (int)strlen(*argv);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

661 if (strcmp(*argv + len - 3, ".gz") == 0 ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

662 strcmp(*argv + len - 3, "-gz") == 0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

663 len -= 3;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

664 else if (strcmp(*argv + len - 2, ".z") == 0 ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

665 strcmp(*argv + len - 2, "-z") == 0 ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

666 strcmp(*argv + len - 2, "_z") == 0 ||

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

667 strcmp(*argv + len - 2, ".Z") == 0)

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

668 len -= 2;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

669 else {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

670 fprintf(stderr, "gun error: no gz type on %s--skipping\n",

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

671 *argv);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

672 continue;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

673 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

674 outname = malloc(len + 1);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

675 if (outname == NULL) {

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

676 fprintf(stderr, "gun out of memory error--aborting\n");

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

677 ret = 1;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

678 break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

679 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

680 memcpy(outname, *argv, len);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

681 outname[len] = 0;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

682 }

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

683 ret = gunzip(&strm, *argv, outname, test);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

684 if (outname != NULL) free(outname);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

685 if (ret) break;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

686 } while (argv++, --argc);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

687 else

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

688 ret = gunzip(&strm, NULL, NULL, test);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

689

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

690 /* clean up */

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

691 inflateBackEnd(&strm);

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

692 return ret;

ae3a4bfb450b add some files of version 4.4.3 that have been forgotten.

kent <kent@cr.ie.u-ryukyu.ac.jp>

parents:

diff changeset

693 }

Mercurial > hg > CbC > CbC_gcc

annotate zlib/examples/gun.c @ 51:ae3a4bfb450b