/[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) 1997-2005 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.
9 9 *
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
16 along with this program; if not, write to the Free Software 16 * along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, 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
… …
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 */ 40 */
41 41
42/* Exit codes:
43 * 0) No errors, succesful operation.
44 * 1) getopt(3) returned an error.
45 * 2) A problem with parameter parsing for getopt(1).
46 * 3) Internal error, out of memory
47 * 4) Returned for -T
48 */
49#define GETOPT_EXIT_CODE 1
50#define PARAMETER_EXIT_CODE 2
51#define XALLOC_EXIT_CODE 3
52#define TEST_EXIT_CODE 4
53
54
42#include <stdio.h> 55#include <stdio.h>
43#include <stdlib.h> 56#include <stdlib.h>
44#include <string.h> 57#include <string.h>
45#include <unistd.h> 58#include <unistd.h>
46#include <ctype.h> 59#include <ctype.h>
… …
52#endif 65#endif
53 66
54#include "nls.h" 67#include "nls.h"
55 68
56/* NON_OPT is the code that is returned when a non-option is found in '+' 69/* NON_OPT is the code that is returned when a non-option is found in '+'
57 mode */ 70 * mode */
58#define NON_OPT 1 71#define NON_OPT 1
59/* LONG_OPT is the code that is returned when a long option is found. */ 72/* LONG_OPT is the code that is returned when a long option is found. */
60#define LONG_OPT 2 73#define LONG_OPT 2
61 74
62/* The shells recognized. */ 75/* The shells recognized. */
63typedef enum {BASH,TCSH} shell_t; 76typedef enum {BASH,TCSH} shell_t;
64 77
65 78
66/* Some global variables that tells us how to parse. */ 79/* Some global variables that tells us how to parse. */
67shell_t shell=BASH; /* The shell we generate output for. */ 80shell_t shell=BASH; /* The shell we generate output for. */
68int quiet_errors=0; /* 0 is not quiet. */ 81int quiet_errors=0; /* 0 is not quiet. */
69int quiet_output=0; /* 0 is not quiet. */ 82int quiet_output=0; /* 0 is not quiet. */
70int quote=1; /* 1 is do quote. */ 83int quote=1; /* 1 is do quote. */
71int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */ 84
85int (*getopt_long_fp) (int argc, char *const *argv, const char *optstr,
86 const struct option * longopts, int *longindex);
72 87
73/* Function prototypes */ 88/* Function prototypes */
74void *our_malloc(size_t size); 89void *our_malloc(size_t size);
75void *our_realloc(void *ptr, size_t size); 90void *our_realloc(void *ptr, size_t size);
76const char *normalize(const char *arg); 91const char *normalize(const char *arg);
… …
87void *our_malloc(size_t size) 102void *our_malloc(size_t size)
88{ 103{
89 void *ret=malloc(size); 104 void *ret=malloc(size);
90 if (! ret) { 105 if (! ret) {
91 fprintf(stderr,_("%s: Out of memory!\n"),"getopt"); 106 fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
92 exit(3); 107 exit(XALLOC_EXIT_CODE);
93 } 108 }
94 return(ret); 109 return(ret);
95} 110}
96 111
97void *our_realloc(void *ptr, size_t size) 112void *our_realloc(void *ptr, size_t size)
98{ 113{
99 void *ret=realloc(ptr,size); 114 void *ret=realloc(ptr,size);
100 if (! ret && size) { 115 if (! ret && size) {
101 fprintf(stderr,_("%s: Out of memory!\n"),"getopt"); 116 fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
102 exit(3); 117 exit(XALLOC_EXIT_CODE);
103 } 118 }
104 return(ret); 119 return(ret);
105} 120}
106 121
107/* 122/*
108 * This function 'normalizes' a single argument: it puts single quotes around 123 * This function 'normalizes' a single argument: it puts single quotes
109 * it and escapes other special characters. If quote is false, it just 124 * around it and escapes other special characters. If quote is false, it
110 * returns its argument. 125 * just returns its argument.
126 *
111 * Bash only needs special treatment for single quotes; tcsh also recognizes 127 * Bash only needs special treatment for single quotes; tcsh also recognizes
112 * exclamation marks within single quotes, and nukes whitespace. 128 * exclamation marks within single quotes, and nukes whitespace. This
113 * This function returns a pointer to a buffer that is overwritten by 129 * function returns a pointer to a buffer that is overwritten by each call.
114 * each call.
115 */ 130 */
116const char *normalize(const char *arg) 131const char *normalize(const char *arg)
117{ 132{
118 static char *BUFFER=NULL; 133 static char *BUFFER=NULL;
119 const char *argptr=arg; 134 const char *argptr=arg;
120 char *bufptr; 135 char *bufptr;
121 136
122 if (BUFFER != NULL) 137 if (BUFFER != NULL)
123 free(BUFFER); 138 free(BUFFER);
124 139
125 if (!quote) { /* Just copy arg */ 140 if (!quote) {
141 /* Just copy arg */
126 BUFFER=our_malloc(strlen(arg)+1); 142 BUFFER=our_malloc(strlen(arg)+1);
127 143
128 strcpy(BUFFER,arg); 144 strcpy(BUFFER,arg);
129 return BUFFER; 145 return BUFFER;
130 } 146 }
131 147
148 /*
132 /* Each character in arg may take upto four characters in the result: 149 * Each character in arg may take upto four characters in the
133 For a quote we need a closing quote, a backslash, a quote and an 150 * result: For a quote we need a closing quote, a backslash, a quote
134 opening quote! We need also the global opening and closing quote, 151 * and an opening quote! We need also the global opening and closing
135 and one extra character for '\0'. */ 152 * quote, and one extra character for '\0'.
153 */
136 BUFFER=our_malloc(strlen(arg)*4+3); 154 BUFFER=our_malloc(strlen(arg)*4+3);
137 155
138 bufptr=BUFFER; 156 bufptr=BUFFER;
139 *bufptr++='\''; 157 *bufptr++='\'';
140 158
… …
179 * Other settings are found in global variables. 197 * Other settings are found in global variables.
180 */ 198 */
181int generate_output(char * argv[],int argc,const char *optstr, 199int generate_output(char * argv[],int argc,const char *optstr,
182 const struct option *longopts) 200 const struct option *longopts)
183{ 201{
184 int exit_code = 0; /* We assume everything will be OK */ 202 int exit_code = EXIT_SUCCESS; /* Assume everything will be OK */
185 int opt; 203 int opt;
186 int longindex; 204 int longindex;
187 const char *charptr; 205 const char *charptr;
188 206
189 if (quiet_errors) /* No error reporting from getopt(3) */ 207 if (quiet_errors)
208 /* No error reporting from getopt(3) */
190 opterr=0; 209 opterr=0;
191 optind=0; /* Reset getopt(3) */ 210 /* Reset getopt(3) */
211 optind=0;
192 212
193 while ((opt = (alternative? 213 while ((opt =
194 getopt_long_only(argc,argv,optstr,longopts,&longindex):
195 getopt_long(argc,argv,optstr,longopts,&longindex))) 214 (getopt_long_fp(argc, argv, optstr, longopts, &longindex)))
196 != EOF) 215 != EOF)
197 if (opt == '?' || opt == ':' ) 216 if (opt == '?' || opt == ':' )
198 exit_code = 1; 217 exit_code = GETOPT_EXIT_CODE;
199 else if (!quiet_output) 218 else if (!quiet_output)
200 { 219 {
201 if (opt == LONG_OPT) { 220 if (opt == LONG_OPT) {
202 printf(" --%s",longopts[longindex].name); 221 printf(" --%s",longopts[longindex].name);
203 if (longopts[longindex].has_arg) 222 if (longopts[longindex].has_arg)
… …
222 } 241 }
223 return exit_code; 242 return exit_code;
224} 243}
225 244
226/* 245/*
227 * Report an error when parsing getopt's own arguments. 246 * Report an error when parsing getopt's own arguments. If message is NULL,
228 * If message is NULL, we already sent a message, we just exit with a helpful 247 * we already sent a message, we just exit with a helpful hint.
229 * hint.
230 */ 248 */
231void parse_error(const char *message) 249void parse_error(const char *message)
232{ 250{
233 if (message) 251 if (message)
234 fprintf(stderr,"getopt: %s\n",message); 252 fprintf(stderr,"getopt: %s\n",message);
235 fputs(_("Try `getopt --help' for more information.\n"),stderr); 253 fputs(_("Try `getopt --help' for more information.\n"),stderr);
236 exit(2); 254 exit(PARAMETER_EXIT_CODE);
237} 255}
238 256
239static struct option *long_options=NULL; 257static struct option *long_options=NULL;
240static int long_options_length=0; /* Length of array */ 258static int long_options_length=0; /* Length of array */
241static int long_options_nr=0; /* Nr of used elements in array */ 259static int long_options_nr=0; /* Nr of used elements in array */
… …
244 262
245/* Register a long option. The contents of name is copied. */ 263/* Register a long option. The contents of name is copied. */
246void add_longopt(const char *name,int has_arg) 264void add_longopt(const char *name,int has_arg)
247{ 265{
248 char *tmp; 266 char *tmp;
249 if (!name) { /* init */ 267 if (!name) {
268 /* init */
250 free(long_options); 269 free(long_options);
251 long_options=NULL; 270 long_options=NULL;
252 long_options_length=0; 271 long_options_length=0;
253 long_options_nr=0; 272 long_options_nr=0;
254 } 273 }
… …
263 long_options[long_options_nr].name=NULL; 282 long_options[long_options_nr].name=NULL;
264 long_options[long_options_nr].has_arg=0; 283 long_options[long_options_nr].has_arg=0;
265 long_options[long_options_nr].flag=NULL; 284 long_options[long_options_nr].flag=NULL;
266 long_options[long_options_nr].val=0; 285 long_options[long_options_nr].val=0;
267 286
268 if (long_options_nr) { /* Not for init! */ 287 if (long_options_nr) {
288 /* Not for init! */
269 long_options[long_options_nr-1].has_arg=has_arg; 289 long_options[long_options_nr-1].has_arg=has_arg;
270 long_options[long_options_nr-1].flag=NULL; 290 long_options[long_options_nr-1].flag=NULL;
271 long_options[long_options_nr-1].val=LONG_OPT; 291 long_options[long_options_nr-1].val=LONG_OPT;
272 tmp = our_malloc(strlen(name)+1); 292 tmp = our_malloc(strlen(name)+1);
273 strcpy(tmp,name); 293 strcpy(tmp,name);
… …
276 long_options_nr++; 296 long_options_nr++;
277} 297}
278 298
279 299
280/* 300/*
281 * Register several long options. options is a string of long options, 301 * Register several long options. options is a string of long options,
282 * separated by commas or whitespace. 302 * separated by commas or whitespace. This nukes options!
283 * This nukes options!
284 */ 303 */
285void add_long_options(char *options) 304void add_long_options(char *options)
286{ 305{
287 int arg_opt; 306 int arg_opt;
288 char *tokptr=strtok(options,", \t\n"); 307 char *tokptr=strtok(options,", \t\n");
… …
336 fputs(_(" -Q, --quiet-output No normal output\n"),stderr); 355 fputs(_(" -Q, --quiet-output No normal output\n"),stderr);
337 fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr); 356 fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr);
338 fputs(_(" -T, --test Test for getopt(1) version\n"),stderr); 357 fputs(_(" -T, --test Test for getopt(1) version\n"),stderr);
339 fputs(_(" -u, --unqote Do not quote the output\n"),stderr); 358 fputs(_(" -u, --unqote Do not quote the output\n"),stderr);
340 fputs(_(" -V, --version Output version information\n"),stderr); 359 fputs(_(" -V, --version Output version information\n"),stderr);
341 exit(2); 360 exit(PARAMETER_EXIT_CODE);
342} 361}
343 362
344/* Exit codes:
345 * 0) No errors, succesful operation.
346 * 1) getopt(3) returned an error.
347 * 2) A problem with parameter parsing for getopt(1).
348 * 3) Internal error, out of memory
349 * 4) Returned for -T
350 */
351
352static struct option longopts[]={ {"options",required_argument,NULL,'o'}, 363static struct option longopts[]={ {"options",required_argument,NULL,'o'},
353 {"longoptions",required_argument,NULL,'l'}, 364 {"longoptions",required_argument,NULL,'l'},
354 {"quiet",no_argument,NULL,'q'}, 365 {"quiet",no_argument,NULL,'q'},
355 {"quiet-output",no_argument,NULL,'Q'}, 366 {"quiet-output",no_argument,NULL,'Q'},
356 {"shell",required_argument,NULL,'s'}, 367 {"shell",required_argument,NULL,'s'},
… …
379 bindtextdomain(PACKAGE, LOCALEDIR); 390 bindtextdomain(PACKAGE, LOCALEDIR);
380 textdomain(PACKAGE); 391 textdomain(PACKAGE);
381#endif 392#endif
382 393
383 init_longopt(); 394 init_longopt();
395 getopt_long_fp = getopt_long;
384 396
385 if (getenv("GETOPT_COMPATIBLE")) 397 if (getenv("GETOPT_COMPATIBLE"))
386 compatible=1; 398 compatible=1;
387 399
388 if (argc == 1) 400 if (argc == 1)
389 { 401 {
390 if (compatible) { 402 if (compatible) {
403 /*
391 /* For some reason, the original getopt gave no error 404 * For some reason, the original getopt gave no error
392 when there were no arguments. */ 405 * when there were no arguments.
406 */
393 printf(" --\n"); 407 printf(" --\n");
394 exit(0); 408 return EXIT_SUCCESS;
395 } 409 }
396 else 410 else
397 parse_error(_("missing optstring argument")); 411 parse_error(_("missing optstring argument"));
398 } 412 }
413
399 414
400 if (argv[1][0] != '-' || compatible) { 415 if (argv[1][0] != '-' || compatible) {
401 quote=0; 416 quote=0;
402 optstr=our_malloc(strlen(argv[1])+1); 417 optstr=our_malloc(strlen(argv[1])+1);
403 strcpy(optstr,argv[1]+strspn(argv[1],"-+")); 418 strcpy(optstr,argv[1]+strspn(argv[1],"-+"));
404 argv[1]=argv[0]; 419 argv[1]=argv[0];
405 exit(generate_output(argv+1,argc-1,optstr,long_options)); 420 return generate_output(argv+1,argc-1,optstr,long_options);
406 } 421 }
407 422
408 while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF) 423 while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF)
409 switch (opt) { 424 switch (opt) {
410 case 'a': 425 case 'a':
411 alternative=1; 426 getopt_long_fp = getopt_long_only;
412 break; 427 break;
413 case 'h': 428 case 'h':
414 print_help(); 429 print_help();
415 exit(0);
416 case 'o': 430 case 'o':
417 if (optstr) 431 if (optstr)
418 free(optstr); 432 free(optstr);
419 optstr=our_malloc(strlen(optarg)+1); 433 optstr=our_malloc(strlen(optarg)+1);
420 strcpy(optstr,optarg); 434 strcpy(optstr,optarg);
… …
436 break; 450 break;
437 case 's': 451 case 's':
438 set_shell(optarg); 452 set_shell(optarg);
439 break; 453 break;
440 case 'T': 454 case 'T':
441 exit(4); 455 return TEST_EXIT_CODE;
442 case 'u': 456 case 'u':
443 quote=0; 457 quote=0;
444 break; 458 break;
445 case 'V': 459 case 'V':
446 printf(_("getopt (enhanced) 1.1.4\n")); 460 printf(_("getopt (enhanced) 1.1.4\n"));
447 exit(0); 461 return EXIT_SUCCESS;
448 case '?': 462 case '?':
449 case ':': 463 case ':':
450 parse_error(NULL); 464 parse_error(NULL);
451 default: 465 default:
452 parse_error(_("internal error, contact the author.")); 466 parse_error(_("internal error, contact the author."));
… …
464 } 478 }
465 if (name) 479 if (name)
466 argv[optind-1]=name; 480 argv[optind-1]=name;
467 else 481 else
468 argv[optind-1]=argv[0]; 482 argv[optind-1]=argv[0];
469 exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options)); 483 return generate_output(argv+optind-1,argc-optind+1,optstr,long_options);
470} 484}
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