Mercurial > hg > CbC > CbC_gcc
annotate libiberty/argv.c @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
| author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 23 Dec 2018 21:23:56 +0900 |
| parents | 84e7813d76e9 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 0 | 1 /* Create and destroy argument vectors (argv's) |
| 131 | 2 Copyright (C) 1992-2018 Free Software Foundation, Inc. |
| 0 | 3 Written by Fred Fish @ Cygnus Support |
| 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 | |
| 18 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
| 19 Boston, MA 02110-1301, USA. */ | |
| 20 | |
| 21 | |
| 22 /* Create and destroy argument vectors. An argument vector is simply an | |
| 23 array of string pointers, terminated by a NULL pointer. */ | |
| 24 | |
| 25 #ifdef HAVE_CONFIG_H | |
| 26 #include "config.h" | |
| 27 #endif | |
| 28 #include "ansidecl.h" | |
| 29 #include "libiberty.h" | |
| 30 #include "safe-ctype.h" | |
| 31 | |
| 32 /* Routines imported from standard C runtime libraries. */ | |
| 33 | |
| 34 #include <stddef.h> | |
| 35 #include <string.h> | |
| 36 #include <stdlib.h> | |
| 37 #include <stdio.h> | |
| 111 | 38 #include <sys/types.h> |
| 39 #ifdef HAVE_UNISTD_H | |
| 40 #include <unistd.h> | |
| 41 #endif | |
| 42 #if HAVE_SYS_STAT_H | |
| 43 #include <sys/stat.h> | |
| 44 #endif | |
| 0 | 45 |
| 46 #ifndef NULL | |
| 47 #define NULL 0 | |
| 48 #endif | |
| 49 | |
| 50 #ifndef EOS | |
| 51 #define EOS '\0' | |
| 52 #endif | |
| 53 | |
| 54 #define INITIAL_MAXARGC 8 /* Number of args + NULL in initial argv */ | |
| 55 | |
| 56 | |
| 57 /* | |
| 58 | |
| 111 | 59 @deftypefn Extension char** dupargv (char * const *@var{vector}) |
| 0 | 60 |
| 61 Duplicate an argument vector. Simply scans through @var{vector}, | |
| 62 duplicating each argument until the terminating @code{NULL} is found. | |
| 63 Returns a pointer to the argument vector if successful. Returns | |
| 64 @code{NULL} if there is insufficient memory to complete building the | |
| 65 argument vector. | |
| 66 | |
| 67 @end deftypefn | |
| 68 | |
| 69 */ | |
| 70 | |
| 71 char ** | |
| 111 | 72 dupargv (char * const *argv) |
| 0 | 73 { |
| 74 int argc; | |
| 75 char **copy; | |
| 76 | |
| 77 if (argv == NULL) | |
| 78 return NULL; | |
| 79 | |
| 80 /* the vector */ | |
| 81 for (argc = 0; argv[argc] != NULL; argc++); | |
| 111 | 82 copy = (char **) xmalloc ((argc + 1) * sizeof (char *)); |
| 83 | |
| 0 | 84 /* the strings */ |
| 85 for (argc = 0; argv[argc] != NULL; argc++) | |
| 111 | 86 copy[argc] = xstrdup (argv[argc]); |
| 0 | 87 copy[argc] = NULL; |
| 88 return copy; | |
| 89 } | |
| 90 | |
| 91 /* | |
| 92 | |
| 93 @deftypefn Extension void freeargv (char **@var{vector}) | |
| 94 | |
| 95 Free an argument vector that was built using @code{buildargv}. Simply | |
| 96 scans through @var{vector}, freeing the memory for each argument until | |
| 97 the terminating @code{NULL} is found, and then frees @var{vector} | |
| 98 itself. | |
| 99 | |
| 100 @end deftypefn | |
| 101 | |
| 102 */ | |
| 103 | |
| 104 void freeargv (char **vector) | |
| 105 { | |
| 106 register char **scan; | |
| 107 | |
| 108 if (vector != NULL) | |
| 109 { | |
| 110 for (scan = vector; *scan != NULL; scan++) | |
| 111 { | |
| 112 free (*scan); | |
| 113 } | |
| 114 free (vector); | |
| 115 } | |
| 116 } | |
| 117 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
118 static void |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
119 consume_whitespace (const char **input) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
120 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
121 while (ISSPACE (**input)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
122 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
123 (*input)++; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
124 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
125 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
126 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
127 static int |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
128 only_whitespace (const char* input) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
129 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
130 while (*input != EOS && ISSPACE (*input)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
131 input++; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
132 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
133 return (*input == EOS); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
134 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
135 |
| 0 | 136 /* |
| 137 | |
| 138 @deftypefn Extension char** buildargv (char *@var{sp}) | |
| 139 | |
| 140 Given a pointer to a string, parse the string extracting fields | |
| 141 separated by whitespace and optionally enclosed within either single | |
| 142 or double quotes (which are stripped off), and build a vector of | |
| 143 pointers to copies of the string for each field. The input string | |
| 144 remains unchanged. The last element of the vector is followed by a | |
| 145 @code{NULL} element. | |
| 146 | |
| 147 All of the memory for the pointer array and copies of the string | |
| 111 | 148 is obtained from @code{xmalloc}. All of the memory can be returned to the |
| 0 | 149 system with the single function call @code{freeargv}, which takes the |
| 150 returned result of @code{buildargv}, as it's argument. | |
| 151 | |
| 152 Returns a pointer to the argument vector if successful. Returns | |
| 153 @code{NULL} if @var{sp} is @code{NULL} or if there is insufficient | |
| 154 memory to complete building the argument vector. | |
| 155 | |
| 156 If the input is a null string (as opposed to a @code{NULL} pointer), | |
| 157 then buildarg returns an argument vector that has one arg, a null | |
| 158 string. | |
| 159 | |
| 160 @end deftypefn | |
| 161 | |
| 162 The memory for the argv array is dynamically expanded as necessary. | |
| 163 | |
| 164 In order to provide a working buffer for extracting arguments into, | |
| 165 with appropriate stripping of quotes and translation of backslash | |
| 166 sequences, we allocate a working buffer at least as long as the input | |
| 167 string. This ensures that we always have enough space in which to | |
| 168 work, since the extracted arg is never larger than the input string. | |
| 169 | |
| 170 The argument vector is always kept terminated with a @code{NULL} arg | |
| 171 pointer, so it can be passed to @code{freeargv} at any time, or | |
| 172 returned, as appropriate. | |
| 173 | |
| 174 */ | |
| 175 | |
| 176 char **buildargv (const char *input) | |
| 177 { | |
| 178 char *arg; | |
| 179 char *copybuf; | |
| 180 int squote = 0; | |
| 181 int dquote = 0; | |
| 182 int bsquote = 0; | |
| 183 int argc = 0; | |
| 184 int maxargc = 0; | |
| 185 char **argv = NULL; | |
| 186 char **nargv; | |
| 187 | |
| 188 if (input != NULL) | |
| 189 { | |
| 111 | 190 copybuf = (char *) xmalloc (strlen (input) + 1); |
| 0 | 191 /* Is a do{}while to always execute the loop once. Always return an |
| 192 argv, even for null strings. See NOTES above, test case below. */ | |
| 193 do | |
| 194 { | |
| 195 /* Pick off argv[argc] */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
196 consume_whitespace (&input); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
197 |
| 0 | 198 if ((maxargc == 0) || (argc >= (maxargc - 1))) |
| 199 { | |
| 200 /* argv needs initialization, or expansion */ | |
| 201 if (argv == NULL) | |
| 202 { | |
| 203 maxargc = INITIAL_MAXARGC; | |
| 111 | 204 nargv = (char **) xmalloc (maxargc * sizeof (char *)); |
| 0 | 205 } |
| 206 else | |
| 207 { | |
| 208 maxargc *= 2; | |
| 111 | 209 nargv = (char **) xrealloc (argv, maxargc * sizeof (char *)); |
| 0 | 210 } |
| 211 argv = nargv; | |
| 212 argv[argc] = NULL; | |
| 213 } | |
| 214 /* Begin scanning arg */ | |
| 215 arg = copybuf; | |
| 216 while (*input != EOS) | |
| 217 { | |
| 218 if (ISSPACE (*input) && !squote && !dquote && !bsquote) | |
| 219 { | |
| 220 break; | |
| 221 } | |
| 222 else | |
| 223 { | |
| 224 if (bsquote) | |
| 225 { | |
| 226 bsquote = 0; | |
| 227 *arg++ = *input; | |
| 228 } | |
| 229 else if (*input == '\\') | |
| 230 { | |
| 231 bsquote = 1; | |
| 232 } | |
| 233 else if (squote) | |
| 234 { | |
| 235 if (*input == '\'') | |
| 236 { | |
| 237 squote = 0; | |
| 238 } | |
| 239 else | |
| 240 { | |
| 241 *arg++ = *input; | |
| 242 } | |
| 243 } | |
| 244 else if (dquote) | |
| 245 { | |
| 246 if (*input == '"') | |
| 247 { | |
| 248 dquote = 0; | |
| 249 } | |
| 250 else | |
| 251 { | |
| 252 *arg++ = *input; | |
| 253 } | |
| 254 } | |
| 255 else | |
| 256 { | |
| 257 if (*input == '\'') | |
| 258 { | |
| 259 squote = 1; | |
| 260 } | |
| 261 else if (*input == '"') | |
| 262 { | |
| 263 dquote = 1; | |
| 264 } | |
| 265 else | |
| 266 { | |
| 267 *arg++ = *input; | |
| 268 } | |
| 269 } | |
| 270 input++; | |
| 271 } | |
| 272 } | |
| 273 *arg = EOS; | |
| 111 | 274 argv[argc] = xstrdup (copybuf); |
| 0 | 275 argc++; |
| 276 argv[argc] = NULL; | |
| 277 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
278 consume_whitespace (&input); |
| 0 | 279 } |
| 280 while (*input != EOS); | |
| 111 | 281 |
| 282 free (copybuf); | |
| 0 | 283 } |
| 284 return (argv); | |
| 285 } | |
| 286 | |
| 287 /* | |
| 288 | |
| 111 | 289 @deftypefn Extension int writeargv (char * const *@var{argv}, FILE *@var{file}) |
| 0 | 290 |
| 291 Write each member of ARGV, handling all necessary quoting, to the file | |
| 292 named by FILE, separated by whitespace. Return 0 on success, non-zero | |
| 293 if an error occurred while writing to FILE. | |
| 294 | |
| 295 @end deftypefn | |
| 296 | |
| 297 */ | |
| 298 | |
| 299 int | |
| 111 | 300 writeargv (char * const *argv, FILE *f) |
| 0 | 301 { |
| 302 int status = 0; | |
| 303 | |
| 304 if (f == NULL) | |
| 305 return 1; | |
| 306 | |
| 307 while (*argv != NULL) | |
| 308 { | |
| 309 const char *arg = *argv; | |
| 310 | |
| 311 while (*arg != EOS) | |
| 312 { | |
| 313 char c = *arg; | |
| 314 | |
| 315 if (ISSPACE(c) || c == '\\' || c == '\'' || c == '"') | |
| 316 if (EOF == fputc ('\\', f)) | |
| 317 { | |
| 318 status = 1; | |
| 319 goto done; | |
| 320 } | |
| 321 | |
| 322 if (EOF == fputc (c, f)) | |
| 323 { | |
| 324 status = 1; | |
| 325 goto done; | |
| 326 } | |
| 327 arg++; | |
| 328 } | |
| 329 | |
| 330 if (EOF == fputc ('\n', f)) | |
| 331 { | |
| 332 status = 1; | |
| 333 goto done; | |
| 334 } | |
| 335 argv++; | |
| 336 } | |
| 337 | |
| 338 done: | |
| 339 return status; | |
| 340 } | |
| 341 | |
| 342 /* | |
| 343 | |
| 344 @deftypefn Extension void expandargv (int *@var{argcp}, char ***@var{argvp}) | |
| 345 | |
| 346 The @var{argcp} and @code{argvp} arguments are pointers to the usual | |
| 347 @code{argc} and @code{argv} arguments to @code{main}. This function | |
| 348 looks for arguments that begin with the character @samp{@@}. Any such | |
| 349 arguments are interpreted as ``response files''. The contents of the | |
| 350 response file are interpreted as additional command line options. In | |
| 351 particular, the file is separated into whitespace-separated strings; | |
| 352 each such string is taken as a command-line option. The new options | |
| 353 are inserted in place of the option naming the response file, and | |
| 354 @code{*argcp} and @code{*argvp} will be updated. If the value of | |
| 355 @code{*argvp} is modified by this function, then the new value has | |
| 356 been dynamically allocated and can be deallocated by the caller with | |
| 357 @code{freeargv}. However, most callers will simply call | |
| 358 @code{expandargv} near the beginning of @code{main} and allow the | |
| 359 operating system to free the memory when the program exits. | |
| 360 | |
| 361 @end deftypefn | |
| 362 | |
| 363 */ | |
| 364 | |
| 365 void | |
| 366 expandargv (int *argcp, char ***argvp) | |
| 367 { | |
| 368 /* The argument we are currently processing. */ | |
| 369 int i = 0; | |
| 131 | 370 /* To check if ***argvp has been dynamically allocated. */ |
| 371 char ** const original_argv = *argvp; | |
|
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
|
372 /* Limit the number of response files that we parse in order |
|
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
|
373 to prevent infinite recursion. */ |
|
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
|
374 unsigned int iteration_limit = 2000; |
| 0 | 375 /* Loop over the arguments, handling response files. We always skip |
| 376 ARGVP[0], as that is the name of the program being run. */ | |
| 377 while (++i < *argcp) | |
| 378 { | |
| 379 /* The name of the response file. */ | |
| 380 const char *filename; | |
| 381 /* The response file. */ | |
| 382 FILE *f; | |
| 383 /* An upper bound on the number of characters in the response | |
| 384 file. */ | |
| 385 long pos; | |
| 386 /* The number of characters in the response file, when actually | |
| 387 read. */ | |
| 388 size_t len; | |
| 389 /* A dynamically allocated buffer used to hold options read from a | |
| 390 response file. */ | |
| 391 char *buffer; | |
| 392 /* Dynamically allocated storage for the options read from the | |
| 393 response file. */ | |
| 394 char **file_argv; | |
| 395 /* The number of options read from the response file, if any. */ | |
| 396 size_t file_argc; | |
| 111 | 397 #ifdef S_ISDIR |
| 398 struct stat sb; | |
| 399 #endif | |
| 0 | 400 /* We are only interested in options of the form "@file". */ |
| 401 filename = (*argvp)[i]; | |
| 402 if (filename[0] != '@') | |
| 403 continue; | |
|
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
|
404 /* If we have iterated too many times then stop. */ |
|
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
|
405 if (-- iteration_limit == 0) |
|
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
|
406 { |
|
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
|
407 fprintf (stderr, "%s: error: too many @-files encountered\n", (*argvp)[0]); |
|
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
|
408 xexit (1); |
|
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
|
409 } |
| 111 | 410 #ifdef S_ISDIR |
| 411 if (stat (filename+1, &sb) < 0) | |
| 412 continue; | |
| 413 if (S_ISDIR(sb.st_mode)) | |
| 414 { | |
| 415 fprintf (stderr, "%s: error: @-file refers to a directory\n", (*argvp)[0]); | |
| 416 xexit (1); | |
| 417 } | |
| 418 #endif | |
| 0 | 419 /* Read the contents of the file. */ |
| 420 f = fopen (++filename, "r"); | |
| 421 if (!f) | |
| 422 continue; | |
| 423 if (fseek (f, 0L, SEEK_END) == -1) | |
| 424 goto error; | |
| 425 pos = ftell (f); | |
| 426 if (pos == -1) | |
| 427 goto error; | |
| 428 if (fseek (f, 0L, SEEK_SET) == -1) | |
| 429 goto error; | |
| 430 buffer = (char *) xmalloc (pos * sizeof (char) + 1); | |
| 431 len = fread (buffer, sizeof (char), pos, f); | |
| 432 if (len != (size_t) pos | |
| 433 /* On Windows, fread may return a value smaller than POS, | |
| 434 due to CR/LF->CR translation when reading text files. | |
| 435 That does not in-and-of itself indicate failure. */ | |
| 436 && ferror (f)) | |
| 437 goto error; | |
| 438 /* Add a NUL terminator. */ | |
| 439 buffer[len] = '\0'; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
440 /* If the file is empty or contains only whitespace, buildargv would |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
441 return a single empty argument. In this context we want no arguments, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
442 instead. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
443 if (only_whitespace (buffer)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
444 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
445 file_argv = (char **) xmalloc (sizeof (char *)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
446 file_argv[0] = NULL; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
447 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
448 else |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
449 /* Parse the string. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
450 file_argv = buildargv (buffer); |
| 0 | 451 /* If *ARGVP is not already dynamically allocated, copy it. */ |
| 131 | 452 if (*argvp == original_argv) |
| 111 | 453 *argvp = dupargv (*argvp); |
| 0 | 454 /* Count the number of arguments. */ |
| 455 file_argc = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
456 while (file_argv[file_argc]) |
| 0 | 457 ++file_argc; |
| 131 | 458 /* Free the original option's memory. */ |
| 459 free ((*argvp)[i]); | |
| 0 | 460 /* Now, insert FILE_ARGV into ARGV. The "+1" below handles the |
| 461 NULL terminator at the end of ARGV. */ | |
| 462 *argvp = ((char **) | |
| 463 xrealloc (*argvp, | |
| 464 (*argcp + file_argc + 1) * sizeof (char *))); | |
| 465 memmove (*argvp + i + file_argc, *argvp + i + 1, | |
| 466 (*argcp - i) * sizeof (char *)); | |
| 467 memcpy (*argvp + i, file_argv, file_argc * sizeof (char *)); | |
| 468 /* The original option has been replaced by all the new | |
| 469 options. */ | |
| 470 *argcp += file_argc - 1; | |
| 471 /* Free up memory allocated to process the response file. We do | |
| 472 not use freeargv because the individual options in FILE_ARGV | |
| 473 are now in the main ARGV. */ | |
| 474 free (file_argv); | |
| 475 free (buffer); | |
| 476 /* Rescan all of the arguments just read to support response | |
| 477 files that include other response files. */ | |
| 478 --i; | |
| 479 error: | |
| 480 /* We're all done with the file now. */ | |
| 481 fclose (f); | |
| 482 } | |
| 483 } | |
| 484 | |
| 111 | 485 /* |
| 486 | |
| 487 @deftypefn Extension int countargv (char * const *@var{argv}) | |
| 488 | |
| 489 Return the number of elements in @var{argv}. | |
| 490 Returns zero if @var{argv} is NULL. | |
| 491 | |
| 492 @end deftypefn | |
| 493 | |
| 494 */ | |
| 495 | |
| 496 int | |
| 497 countargv (char * const *argv) | |
| 498 { | |
| 499 int argc; | |
| 500 | |
| 501 if (argv == NULL) | |
| 502 return 0; | |
| 503 for (argc = 0; argv[argc] != NULL; argc++) | |
| 504 continue; | |
| 505 return argc; | |
| 506 } | |
| 507 | |
| 0 | 508 #ifdef MAIN |
| 509 | |
| 510 /* Simple little test driver. */ | |
| 511 | |
| 512 static const char *const tests[] = | |
| 513 { | |
| 514 "a simple command line", | |
| 515 "arg 'foo' is single quoted", | |
| 516 "arg \"bar\" is double quoted", | |
| 517 "arg \"foo bar\" has embedded whitespace", | |
| 518 "arg 'Jack said \\'hi\\'' has single quotes", | |
| 519 "arg 'Jack said \\\"hi\\\"' has double quotes", | |
| 520 "a b c d e f g h i j k l m n o p q r s t u v w x y z 1 2 3 4 5 6 7 8 9", | |
| 521 | |
| 522 /* This should be expanded into only one argument. */ | |
| 523 "trailing-whitespace ", | |
| 524 | |
| 525 "", | |
| 526 NULL | |
| 527 }; | |
| 528 | |
| 529 int | |
| 530 main (void) | |
| 531 { | |
| 532 char **argv; | |
| 533 const char *const *test; | |
| 534 char **targs; | |
| 535 | |
| 536 for (test = tests; *test != NULL; test++) | |
| 537 { | |
| 538 printf ("buildargv(\"%s\")\n", *test); | |
| 539 if ((argv = buildargv (*test)) == NULL) | |
| 540 { | |
| 541 printf ("failed!\n\n"); | |
| 542 } | |
| 543 else | |
| 544 { | |
| 545 for (targs = argv; *targs != NULL; targs++) | |
| 546 { | |
| 547 printf ("\t\"%s\"\n", *targs); | |
| 548 } | |
| 549 printf ("\n"); | |
| 550 } | |
| 551 freeargv (argv); | |
| 552 } | |
| 553 | |
| 554 return 0; | |
| 555 } | |
| 556 | |
| 557 #endif /* MAIN */ |