Mercurial > hg > CbC > CbC_gcc
annotate libiberty/make-temp-file.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Utility to pick a temporary filename prefix. |
|
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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2 Copyright (C) 1996, 1997, 1998, 2001, 2009, 2010 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
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3 Free Software Foundation, Inc. |
| 0 | 4 |
| 5 This file is part of the libiberty library. | |
| 6 Libiberty is free software; you can redistribute it and/or | |
| 7 modify it under the terms of the GNU Library General Public | |
| 8 License as published by the Free Software Foundation; either | |
| 9 version 2 of the License, or (at your option) any later version. | |
| 10 | |
| 11 Libiberty is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Library General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU Library General Public | |
| 17 License along with libiberty; see the file COPYING.LIB. If not, | |
| 18 write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
| 19 Boston, MA 02110-1301, USA. */ | |
| 20 | |
| 21 #ifdef HAVE_CONFIG_H | |
| 22 #include "config.h" | |
| 23 #endif | |
| 24 | |
| 25 #include <stdio.h> /* May get P_tmpdir. */ | |
| 26 #include <sys/types.h> | |
| 27 #include <errno.h> | |
| 28 #ifdef HAVE_UNISTD_H | |
| 29 #include <unistd.h> | |
| 30 #endif | |
| 31 #ifdef HAVE_STDLIB_H | |
| 32 #include <stdlib.h> | |
| 33 #endif | |
| 34 #ifdef HAVE_STRING_H | |
| 35 #include <string.h> | |
| 36 #endif | |
| 37 #ifdef HAVE_SYS_FILE_H | |
| 38 #include <sys/file.h> /* May get R_OK, etc. on some systems. */ | |
| 39 #endif | |
| 40 #if defined(_WIN32) && !defined(__CYGWIN__) | |
| 41 #include <windows.h> | |
| 42 #endif | |
| 43 | |
| 44 #ifndef R_OK | |
| 45 #define R_OK 4 | |
| 46 #define W_OK 2 | |
| 47 #define X_OK 1 | |
| 48 #endif | |
| 49 | |
| 50 #include "libiberty.h" | |
| 51 extern int mkstemps (char *, int); | |
| 52 | |
| 53 /* '/' works just fine on MS-DOS based systems. */ | |
| 54 #ifndef DIR_SEPARATOR | |
| 55 #define DIR_SEPARATOR '/' | |
| 56 #endif | |
| 57 | |
| 58 /* Name of temporary file. | |
| 59 mktemp requires 6 trailing X's. */ | |
| 60 #define TEMP_FILE "ccXXXXXX" | |
| 61 #define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1) | |
| 62 | |
| 63 #if !defined(_WIN32) || defined(__CYGWIN__) | |
| 64 | |
| 65 /* Subroutine of choose_tmpdir. | |
| 66 If BASE is non-NULL, return it. | |
| 67 Otherwise it checks if DIR is a usable directory. | |
| 68 If success, DIR is returned. | |
| 69 Otherwise NULL is returned. */ | |
| 70 | |
| 71 static inline const char *try_dir (const char *, const char *); | |
| 72 | |
| 73 static inline const char * | |
| 74 try_dir (const char *dir, const char *base) | |
| 75 { | |
| 76 if (base != 0) | |
| 77 return base; | |
| 78 if (dir != 0 | |
| 79 && access (dir, R_OK | W_OK | X_OK) == 0) | |
| 80 return dir; | |
| 81 return 0; | |
| 82 } | |
| 83 | |
| 84 static const char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 }; | |
| 85 static const char usrtmp[] = | |
| 86 { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; | |
| 87 static const char vartmp[] = | |
| 88 { DIR_SEPARATOR, 'v', 'a', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 }; | |
| 89 | |
| 90 #endif | |
| 91 | |
| 92 static char *memoized_tmpdir; | |
| 93 | |
| 94 /* | |
| 95 | |
| 96 @deftypefn Replacement char* choose_tmpdir () | |
| 97 | |
| 98 Returns a pointer to a directory path suitable for creating temporary | |
| 99 files in. | |
| 100 | |
| 101 @end deftypefn | |
| 102 | |
| 103 */ | |
| 104 | |
| 105 char * | |
| 106 choose_tmpdir (void) | |
| 107 { | |
| 108 if (!memoized_tmpdir) | |
| 109 { | |
| 110 #if !defined(_WIN32) || defined(__CYGWIN__) | |
| 111 const char *base = 0; | |
| 112 char *tmpdir; | |
| 113 unsigned int len; | |
| 114 | |
|
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115 #ifdef VMS |
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116 /* Try VMS standard temp logical. */ |
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117 base = try_dir ("/sys$scratch", base); |
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118 #else |
| 0 | 119 base = try_dir (getenv ("TMPDIR"), base); |
| 120 base = try_dir (getenv ("TMP"), base); | |
| 121 base = try_dir (getenv ("TEMP"), base); | |
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122 #endif |
| 0 | 123 |
| 124 #ifdef P_tmpdir | |
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67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
125 /* We really want a directory name here as if concatenated with say \dir |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
126 we do not end up with a double \\ which defines an UNC path. */ |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
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127 if (strcmp (P_tmpdir, "\\") == 0) |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
128 base = try_dir ("\\.", base); |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
129 else |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
130 base = try_dir (P_tmpdir, base); |
| 0 | 131 #endif |
| 132 | |
| 133 /* Try /var/tmp, /usr/tmp, then /tmp. */ | |
| 134 base = try_dir (vartmp, base); | |
| 135 base = try_dir (usrtmp, base); | |
| 136 base = try_dir (tmp, base); | |
| 137 | |
| 138 /* If all else fails, use the current directory! */ | |
| 139 if (base == 0) | |
| 140 base = "."; | |
| 141 /* Append DIR_SEPARATOR to the directory we've chosen | |
| 142 and return it. */ | |
| 143 len = strlen (base); | |
| 144 tmpdir = XNEWVEC (char, len + 2); | |
| 145 strcpy (tmpdir, base); | |
| 146 tmpdir[len] = DIR_SEPARATOR; | |
| 147 tmpdir[len+1] = '\0'; | |
| 148 memoized_tmpdir = tmpdir; | |
| 149 #else /* defined(_WIN32) && !defined(__CYGWIN__) */ | |
| 150 DWORD len; | |
| 151 | |
| 152 /* Figure out how much space we need. */ | |
| 153 len = GetTempPath(0, NULL); | |
| 154 if (len) | |
| 155 { | |
| 156 memoized_tmpdir = XNEWVEC (char, len); | |
| 157 if (!GetTempPath(len, memoized_tmpdir)) | |
| 158 { | |
| 159 XDELETEVEC (memoized_tmpdir); | |
| 160 memoized_tmpdir = NULL; | |
| 161 } | |
| 162 } | |
| 163 if (!memoized_tmpdir) | |
| 164 /* If all else fails, use the current directory. */ | |
| 165 memoized_tmpdir = xstrdup (".\\"); | |
| 166 #endif /* defined(_WIN32) && !defined(__CYGWIN__) */ | |
| 167 } | |
| 168 | |
| 169 return memoized_tmpdir; | |
| 170 } | |
| 171 | |
| 172 /* | |
| 173 | |
| 174 @deftypefn Replacement char* make_temp_file (const char *@var{suffix}) | |
| 175 | |
| 176 Return a temporary file name (as a string) or @code{NULL} if unable to | |
| 177 create one. @var{suffix} is a suffix to append to the file name. The | |
| 178 string is @code{malloc}ed, and the temporary file has been created. | |
| 179 | |
| 180 @end deftypefn | |
| 181 | |
| 182 */ | |
| 183 | |
| 184 char * | |
| 185 make_temp_file (const char *suffix) | |
| 186 { | |
| 187 const char *base = choose_tmpdir (); | |
| 188 char *temp_filename; | |
| 189 int base_len, suffix_len; | |
| 190 int fd; | |
| 191 | |
| 192 if (suffix == 0) | |
| 193 suffix = ""; | |
| 194 | |
| 195 base_len = strlen (base); | |
| 196 suffix_len = strlen (suffix); | |
| 197 | |
| 198 temp_filename = XNEWVEC (char, base_len | |
| 199 + TEMP_FILE_LEN | |
| 200 + suffix_len + 1); | |
| 201 strcpy (temp_filename, base); | |
| 202 strcpy (temp_filename + base_len, TEMP_FILE); | |
| 203 strcpy (temp_filename + base_len + TEMP_FILE_LEN, suffix); | |
| 204 | |
| 205 fd = mkstemps (temp_filename, suffix_len); | |
| 206 /* Mkstemps failed. It may be EPERM, ENOSPC etc. */ | |
| 207 if (fd == -1) | |
| 208 { | |
| 209 fprintf (stderr, "Cannot create temporary file in %s: %s\n", | |
| 210 base, strerror (errno)); | |
| 211 abort (); | |
| 212 } | |
| 213 /* We abort on failed close out of sheer paranoia. */ | |
| 214 if (close (fd)) | |
| 215 abort (); | |
| 216 return temp_filename; | |
| 217 } |