/[public]/getopt/trunk/getopt.c
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1/* 1/*
2 * getopt.c - Enhanced implementation of BSD getopt(1) 2 * getopt.c - Enhanced implementation of BSD getopt(1)
3 * Copyright (c) 1997-2005 Frodo Looijaard <frodo@frodo.looijaard.name> 3 * Copyright (c) 1997-2014 Frodo Looijaard <frodo@frodo.looijaard.name>
4 * 4 *
5 * This program is free software; you can redistribute it and/or modify 5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by 6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or 7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version. 8 * (at your option) any later version.
… …
10 * This program is distributed in the hope that it will be useful, 10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details. 13 * GNU General Public License for more details.
14 * 14 *
15 * You should have received a copy of the GNU General Public License 15 * You should have received a copy of the GNU General Public License along
16 * along with this program; if not, write to the Free Software 16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */ 18 */
19 19
20/* 20/*
21 * Version 1.0-b4: Tue Sep 23 1997. First public release. 21 * Version 1.0-b4: Tue Sep 23 1997. First public release.
22 * Version 1.0: Wed Nov 19 1997. 22 * Version 1.0: Wed Nov 19 1997.
23 * Bumped up the version number to 1.0 23 * Bumped up the version number to 1.0
24 * Fixed minor typo (CSH instead of TCSH) 24 * Fixed minor typo (CSH instead of TCSH)
25 * Version 1.0.1: Tue Jun 3 1998 25 * Version 1.0.1: Tue Jun 3 1998
26 * Fixed sizeof instead of strlen bug 26 * Fixed sizeof instead of strlen bug
27 * Bumped up the version number to 1.0.1 27 * Bumped up the version number to 1.0.1
… …
31 * Version 1.0.5: Tue Jun 22 1999 31 * Version 1.0.5: Tue Jun 22 1999
32 * Make -u option work (not present) 32 * Make -u option work (not present)
33 * Version 1.0.6: Tue Jun 27 2000 33 * Version 1.0.6: Tue Jun 27 2000
34 * No important changes 34 * No important changes
35 * Version 1.1.0: Tue Jun 30 2000 35 * Version 1.1.0: Tue Jun 30 2000
36 * Added NLS support (partly written by Arkadiusz Mi<B6>kiewicz 36 * Added NLS support (partly written by Arkadiusz Miśkiewicz
37 * <misiek@pld.org.pl>) 37 * <misiek@pld.org.pl>)
38 * Version 1.1.4: Mon Nov 7 2005 38 * Version 1.1.4: Mon Nov 7 2005
39 * Fixed a few type's in the manpage 39 * Fixed a few type's in the manpage
40 * Version 1.1.5: Sun Aug 12 2012
41 * Sync with util-linux-2.21, fixed build problems, many new translations
40 */ 42 */
41 43
42/* Exit codes: 44/* Exit codes:
43 * 0) No errors, succesful operation. 45 * 0) No errors, successful operation.
44 * 1) getopt(3) returned an error. 46 * 1) getopt(3) returned an error.
45 * 2) A problem with parameter parsing for getopt(1). 47 * 2) A problem with parameter parsing for getopt(1).
46 * 3) Internal error, out of memory 48 * 3) Internal error, out of memory
47 * 4) Returned for -T 49 * 4) Returned for -T
48 */ 50 */
… …
61#include <getopt.h> 63#include <getopt.h>
62#else 64#else
63#include "getopt.h" 65#include "getopt.h"
64#endif 66#endif
65 67
68#include "util-linux-compat.h"
66#include "nls.h" 69#include "nls.h"
67#include "xalloc.h" 70#include "xalloc.h"
68 71
69/* NON_OPT is the code that is returned when a non-option is found in '+' 72/* NON_OPT is the code that is returned when a non-option is found in '+'
70 * mode */ 73 * mode */
71#define NON_OPT 1 74#define NON_OPT 1
72/* LONG_OPT is the code that is returned when a long option is found. */ 75/* LONG_OPT is the code that is returned when a long option is found. */
73#define LONG_OPT 2 76#define LONG_OPT 2
74 77
… …
88 91
89/* Function prototypes */ 92/* Function prototypes */
90static const char *normalize(const char *arg); 93static const char *normalize(const char *arg);
91static int generate_output(char *argv[], int argc, const char *optstr, 94static int generate_output(char *argv[], int argc, const char *optstr,
92 const struct option *longopts); 95 const struct option *longopts);
93int main(int argc, char *argv[]);
94static void parse_error(const char *message); 96static void parse_error(const char *message);
95static void add_long_options(char *options); 97static void add_long_options(char *options);
96static void add_longopt(const char *name, int has_arg); 98static void add_longopt(const char *name, int has_arg);
97static void print_help(void); 99static void print_help(void);
98static void set_shell(const char *new_shell); 100static void set_shell(const char *new_shell);
… …
120 strcpy(BUFFER, arg); 122 strcpy(BUFFER, arg);
121 return BUFFER; 123 return BUFFER;
122 } 124 }
123 125
124 /* 126 /*
125 * Each character in arg may take upto four characters in the 127 * Each character in arg may take up to four characters in the
126 * result: For a quote we need a closing quote, a backslash, a quote 128 * result: For a quote we need a closing quote, a backslash, a quote
127 * and an opening quote! We need also the global opening and closing 129 * and an opening quote! We need also the global opening and closing
128 * quote, and one extra character for '\0'. 130 * quote, and one extra character for '\0'.
129 */ 131 */
130 BUFFER = xmalloc(strlen(arg) * 4 + 3); 132 BUFFER = xmalloc(strlen(arg) * 4 + 3);
… …
163 *bufptr++ = '\''; 165 *bufptr++ = '\'';
164 *bufptr++ = '\0'; 166 *bufptr++ = '\0';
165 return BUFFER; 167 return BUFFER;
166} 168}
167 169
168/* 170/*
169 * Generate the output. argv[0] is the program name (used for reporting errors). 171 * Generate the output. argv[0] is the program name (used for reporting errors).
170 * argv[1..] contains the options to be parsed. argc must be the number of 172 * argv[1..] contains the options to be parsed. argc must be the number of
171 * elements in argv (ie. 1 if there are no options, only the program name), 173 * elements in argv (ie. 1 if there are no options, only the program name),
172 * optstr must contain the short options, and longopts the long options. 174 * optstr must contain the short options, and longopts the long options.
173 * Other settings are found in global variables. 175 * Other settings are found in global variables.
… …
195 if (opt == LONG_OPT) { 197 if (opt == LONG_OPT) {
196 printf(" --%s", longopts[longindex].name); 198 printf(" --%s", longopts[longindex].name);
197 if (longopts[longindex].has_arg) 199 if (longopts[longindex].has_arg)
198 printf(" %s", normalize(optarg ? optarg : "")); 200 printf(" %s", normalize(optarg ? optarg : ""));
199 } else if (opt == NON_OPT) 201 } else if (opt == NON_OPT)
200 printf(" %s", normalize(optarg)); 202 printf(" %s", normalize(optarg ? optarg : ""));
201 else { 203 else {
202 printf(" -%c", opt); 204 printf(" -%c", opt);
203 charptr = strchr(optstr, opt); 205 charptr = strchr(optstr, opt);
204 if (charptr != NULL && *++charptr == ':') 206 if (charptr != NULL && *++charptr == ':')
205 printf(" %s", normalize(optarg ? optarg : "")); 207 printf(" %s", normalize(optarg ? optarg : ""));
… …
220 * we already sent a message, we just exit with a helpful hint. 222 * we already sent a message, we just exit with a helpful hint.
221 */ 223 */
222static void __attribute__ ((__noreturn__)) parse_error(const char *message) 224static void __attribute__ ((__noreturn__)) parse_error(const char *message)
223{ 225{
224 if (message) 226 if (message)
225 fprintf(stderr, "%s: %s\n", ,program_short_invocation_name, message); 227 warnx("%s", message);
226 fprintf(stderr, _("Try `%s --help' for more information.\n"), 228 fprintf(stderr, _("Try `%s --help' for more information.\n"),
227 program_invocation_short_name); 229 program_invocation_short_name);
228 exit(PARAMETER_EXIT_CODE); 230 exit(PARAMETER_EXIT_CODE);
229} 231}
230 232
… …
256 long_options[long_options_nr].name = NULL; 258 long_options[long_options_nr].name = NULL;
257 long_options[long_options_nr].has_arg = 0; 259 long_options[long_options_nr].has_arg = 0;
258 long_options[long_options_nr].flag = NULL; 260 long_options[long_options_nr].flag = NULL;
259 long_options[long_options_nr].val = 0; 261 long_options[long_options_nr].val = 0;
260 262
261 if (long_options_nr) { 263 if (long_options_nr && name) {
262 /* Not for init! */ 264 /* Not for init! */
263 long_options[long_options_nr - 1].has_arg = has_arg; 265 long_options[long_options_nr - 1].has_arg = has_arg;
264 long_options[long_options_nr - 1].flag = NULL; 266 long_options[long_options_nr - 1].flag = NULL;
265 long_options[long_options_nr - 1].val = LONG_OPT; 267 long_options[long_options_nr - 1].val = LONG_OPT;
266 tmp = xmalloc(strlen(name) + 1); 268 tmp = xmalloc(strlen(name) + 1);
… …
269 } 271 }
270 long_options_nr++; 272 long_options_nr++;
271} 273}
272 274
273 275
274/* 276/*
275 * Register several long options. options is a string of long options, 277 * Register several long options. options is a string of long options,
276 * separated by commas or whitespace. This nukes options! 278 * separated by commas or whitespace. This nukes options!
277 */ 279 */
278static void add_long_options(char *options) 280static void add_long_options(char *options)
279{ 281{
… …
316 ("unknown shell after -s or --shell argument")); 318 ("unknown shell after -s or --shell argument"));
317} 319}
318 320
319static void __attribute__ ((__noreturn__)) print_help(void) 321static void __attribute__ ((__noreturn__)) print_help(void)
320{ 322{
321 fputs(_("Usage: getopt optstring parameters\n"), stderr); 323 fputs(USAGE_HEADER, stderr);
322 fputs(_(" getopt [options] [--] optstring parameters\n"), stderr); 324 fprintf(stderr, _(
323 fputs(_(" getopt [options] -o|--options optstring [options] [--]\n"), stderr); 325 " %1$s optstring parameters\n"
324 fputs(_(" parameters\n"), stderr); 326 " %1$s [options] [--] optstring parameters\n"
325 fputs(_("\nOptions:\n"), stderr); 327 " %1$s [options] -o|--options optstring [options] [--] parameters\n"),
328 program_invocation_short_name);
329
330 fputs(USAGE_OPTIONS, stderr);
326 fputs(_(" -a, --alternative Allow long options starting with single -\n"), stderr); 331 fputs(_(" -a, --alternative Allow long options starting with single -\n"), stderr);
327 fputs(_(" -h, --help This small usage guide\n"), stderr);
328 fputs(_(" -l, --longoptions <longopts> Long options to be recognized\n"), stderr); 332 fputs(_(" -l, --longoptions <longopts> Long options to be recognized\n"), stderr);
329 fputs(_(" -n, --name <progname> The name under which errors are reported\n"), stderr); 333 fputs(_(" -n, --name <progname> The name under which errors are reported\n"), stderr);
330 fputs(_(" -o, --options <optstring> Short options to be recognized\n"), stderr); 334 fputs(_(" -o, --options <optstring> Short options to be recognized\n"), stderr);
331 fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"), stderr); 335 fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"), stderr);
332 fputs(_(" -Q, --quiet-output No normal output\n"), stderr); 336 fputs(_(" -Q, --quiet-output No normal output\n"), stderr);
333 fputs(_(" -s, --shell <shell> Set shell quoting conventions\n"), stderr); 337 fputs(_(" -s, --shell <shell> Set shell quoting conventions\n"), stderr);
334 fputs(_(" -T, --test Test for getopt(1) version\n"), stderr); 338 fputs(_(" -T, --test Test for getopt(1) version\n"), stderr);
335 fputs(_(" -u, --unquote Do not quote the output\n"), stderr); 339 fputs(_(" -u, --unquoted Do not quote the output\n"), stderr);
336 fputs(_(" -V, --version Output version information\n"), stderr); 340 fputs(USAGE_SEPARATOR, stderr);
337 fputc('\n', stderr); 341 fputs(USAGE_HELP, stderr);
338 342 fputs(USAGE_VERSION, stderr);
343 fprintf(stderr, USAGE_MAN_TAIL("getopt(1)"));
339 exit(PARAMETER_EXIT_CODE); 344 exit(PARAMETER_EXIT_CODE);
340} 345}
341 346
342int main(int argc, char *argv[]) 347int main(int argc, char *argv[])
343{ 348{
… …
360 {"alternative", no_argument, NULL, 'a'}, 365 {"alternative", no_argument, NULL, 'a'},
361 {"name", required_argument, NULL, 'n'}, 366 {"name", required_argument, NULL, 'n'},
362 {"version", no_argument, NULL, 'V'}, 367 {"version", no_argument, NULL, 'V'},
363 {NULL, 0, NULL, 0} 368 {NULL, 0, NULL, 0}
364 }; 369 };
365#if WITHOUT_GETTEXT 370
366#else
367 setlocale(LC_ALL, ""); 371 setlocale(LC_ALL, "");
368 bindtextdomain(PACKAGE, LOCALEDIR); 372 bindtextdomain(PACKAGE, LOCALEDIR);
369 textdomain(PACKAGE); 373 textdomain(PACKAGE);
370#endif
371 374
372 init_longopt(); 375 init_longopt();
373 getopt_long_fp = getopt_long; 376 getopt_long_fp = getopt_long;
374 377
375 if (getenv("GETOPT_COMPATIBLE")) 378 if (getenv("GETOPT_COMPATIBLE"))
… …
385 return EXIT_SUCCESS; 388 return EXIT_SUCCESS;
386 } else 389 } else
387 parse_error(_("missing optstring argument")); 390 parse_error(_("missing optstring argument"));
388 } 391 }
389 392
390
391 if (argv[1][0] != '-' || compatible) { 393 if (argv[1][0] != '-' || compatible) {
392 quote = 0; 394 quote = 0;
393 optstr = xmalloc(strlen(argv[1]) + 1); 395 optstr = xmalloc(strlen(argv[1]) + 1);
394 strcpy(optstr, argv[1] + strspn(argv[1], "-+")); 396 strcpy(optstr, argv[1] + strspn(argv[1], "-+"));
395 argv[1] = argv[0]; 397 argv[1] = argv[0];
… …
431 return TEST_EXIT_CODE; 433 return TEST_EXIT_CODE;
432 case 'u': 434 case 'u':
433 quote = 0; 435 quote = 0;
434 break; 436 break;
435 case 'V': 437 case 'V':
436 printf(_("%s (enhanced) %s\n"), program_invocation_short_name, program_version); 438 printf(UTIL_LINUX_VERSION);
437 return EXIT_SUCCESS; 439 return EXIT_SUCCESS;
438 case '?': 440 case '?':
439 case ':': 441 case ':':
440 parse_error(NULL); 442 parse_error(NULL);
441 default: 443 default:
442 parse_error(_("internal error, contact the author.")); 444 parse_error(_("internal error, contact the author."));
443 } 445 }
444 446
445 if (!optstr) { 447 if (!optstr) {
446 if (optind >= argc) 448 if (optind >= argc)
447 parse_error(_("missing optstring argument")); 449 parse_error(_("missing optstring argument"));
448 else { 450 else {
449 optstr = xmalloc(strlen(argv[optind]) + 1); 451 optstr = xmalloc(strlen(argv[optind]) + 1);
… …
453 } 455 }
454 if (name) 456 if (name)
455 argv[optind - 1] = name; 457 argv[optind - 1] = name;
456 else 458 else
457 argv[optind - 1] = argv[0]; 459 argv[optind - 1] = argv[0];
460
458 return generate_output(argv + optind - 1, argc-optind + 1, 461 return generate_output(argv + optind - 1, argc-optind + 1,
459 optstr, long_options); 462 optstr, long_options);
460} 463}
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