/[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
42 * Version 1.1.6: ??? 2014
43 * Sync with util-linux git 20141120, detect ambigious long options
40 */ 44 */
45
46/* Exit codes:
47 * 0) No errors, successful operation.
48 * 1) getopt(3) returned an error.
49 * 2) A problem with parameter parsing for getopt(1).
50 * 3) Internal error, out of memory
51 * 4) Returned for -T
52 */
53#define GETOPT_EXIT_CODE 1
54#define PARAMETER_EXIT_CODE 2
55#define XALLOC_EXIT_CODE 3
56#define TEST_EXIT_CODE 4
41 57
42#include <stdio.h> 58#include <stdio.h>
43#include <stdlib.h> 59#include <stdlib.h>
44#include <string.h> 60#include <string.h>
45#include <unistd.h> 61#include <unistd.h>
… …
49#include <getopt.h> 65#include <getopt.h>
50#else 66#else
51#include "getopt.h" 67#include "getopt.h"
52#endif 68#endif
53 69
70#include "util-linux-compat.h"
54#include "nls.h" 71#include "nls.h"
72#include "xalloc.h"
55 73
56/* NON_OPT is the code that is returned when a non-option is found in '+' 74/* NON_OPT is the code that is returned when a non-option is found in '+'
57 * mode */ 75 * mode */
58#define NON_OPT 1 76#define NON_OPT 1
59/* LONG_OPT is the code that is returned when a long option is found. */ 77/* LONG_OPT is the code that is returned when a long option is found. */
60#define LONG_OPT 2 78#define LONG_OPT 0
61 79
62/* The shells recognized. */ 80/* The shells recognized. */
63typedef enum {BASH,TCSH} shell_t; 81typedef enum { BASH, TCSH } shell_t;
64 82
65 83
66/* Some global variables that tells us how to parse. */ 84/* Some global variables that tells us how to parse. */
67shell_t shell=BASH; /* The shell we generate output for. */ 85static shell_t shell = BASH; /* The shell we generate output for. */
68int quiet_errors=0; /* 0 is not quiet. */ 86static int quiet_errors = 0; /* 0 is not quiet. */
69int quiet_output=0; /* 0 is not quiet. */ 87static int quiet_output = 0; /* 0 is not quiet. */
70int quote=1; /* 1 is do quote. */ 88static int quote = 1; /* 1 is do quote. */
71int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */ 89
90/* Allow changing which getopt is in use with function pointer */
91int (*getopt_long_fp) (int argc, char *const *argv, const char *optstr,
92 const struct option * longopts, int *longindex);
72 93
73/* Function prototypes */ 94/* Function prototypes */
74void *our_malloc(size_t size);
75void *our_realloc(void *ptr, size_t size);
76const char *normalize(const char *arg); 95static const char *normalize(const char *arg);
77int generate_output(char * argv[],int argc,const char *optstr, 96static int generate_output(char *argv[], int argc, const char *optstr,
78 const struct option *longopts); 97 const struct option *longopts);
79int main(int argc, char *argv[]);
80void parse_error(const char *message); 98static void parse_error(const char *message);
81void add_long_options(char *options); 99static void add_long_options(char *options);
82void add_longopt(const char *name,int has_arg); 100static void add_longopt(const char *name, int has_arg);
83void print_help(void); 101static void print_help(void);
84void set_shell(const char *new_shell); 102static void set_shell(const char *new_shell);
85void set_initial_shell(void);
86
87void *our_malloc(size_t size)
88{
89 void *ret=malloc(size);
90 if (! ret) {
91 fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
92 exit(3);
93 }
94 return(ret);
95}
96
97void *our_realloc(void *ptr, size_t size)
98{
99 void *ret=realloc(ptr,size);
100 if (! ret && size) {
101 fprintf(stderr,_("%s: Out of memory!\n"),"getopt");
102 exit(3);
103 }
104 return(ret);
105}
106 103
107/* 104/*
108 * This function 'normalizes' a single argument: it puts single quotes 105 * This function 'normalizes' a single argument: it puts single quotes
109 * around it and escapes other special characters. If quote is false, it 106 * around it and escapes other special characters. If quote is false, it
110 * just returns its argument. 107 * just returns its argument.
111 * 108 *
112 * Bash only needs special treatment for single quotes; tcsh also recognizes 109 * Bash only needs special treatment for single quotes; tcsh also recognizes
113 * exclamation marks within single quotes, and nukes whitespace. This 110 * exclamation marks within single quotes, and nukes whitespace. This
114 * function returns a pointer to a buffer that is overwritten by each call. 111 * function returns a pointer to a buffer that is overwritten by each call.
115 */ 112 */
116const char *normalize(const char *arg) 113static const char *normalize(const char *arg)
117{ 114{
118 static char *BUFFER=NULL; 115 static char *BUFFER = NULL;
119 const char *argptr=arg; 116 const char *argptr = arg;
120 char *bufptr; 117 char *bufptr;
121 118
122 if (BUFFER != NULL)
123 free(BUFFER); 119 free(BUFFER);
124 120
125 if (!quote) { 121 if (!quote) {
126 /* Just copy arg */ 122 /* Just copy arg */
127 BUFFER=our_malloc(strlen(arg)+1); 123 BUFFER = xmalloc(strlen(arg) + 1);
128
129 strcpy(BUFFER,arg); 124 strcpy(BUFFER, arg);
130 return BUFFER; 125 return BUFFER;
131 } 126 }
132 127
133 /* 128 /*
134 * Each character in arg may take upto four characters in the 129 * Each character in arg may take up to four characters in the
135 * result: For a quote we need a closing quote, a backslash, a quote 130 * result: For a quote we need a closing quote, a backslash, a quote
136 * and an opening quote! We need also the global opening and closing 131 * and an opening quote! We need also the global opening and closing
137 * quote, and one extra character for '\0'. 132 * quote, and one extra character for '\0'.
138 */ 133 */
139 BUFFER=our_malloc(strlen(arg)*4+3); 134 BUFFER = xmalloc(strlen(arg) * 4 + 3);
140 135
141 bufptr=BUFFER; 136 bufptr = BUFFER;
142 *bufptr++='\''; 137 *bufptr++ = '\'';
143 138
144 while (*argptr) { 139 while (*argptr) {
145 if (*argptr == '\'') { 140 if (*argptr == '\'') {
146 /* Quote: replace it with: '\'' */ 141 /* Quote: replace it with: '\'' */
147 *bufptr++='\''; 142 *bufptr++ = '\'';
148 *bufptr++='\\'; 143 *bufptr++ = '\\';
149 *bufptr++='\''; 144 *bufptr++ = '\'';
150 *bufptr++='\''; 145 *bufptr++ = '\'';
151 } else if (shell==TCSH && *argptr=='!') { 146 } else if (shell == TCSH && *argptr == '!') {
152 /* Exclamation mark: replace it with: \! */ 147 /* Exclamation mark: replace it with: \! */
153 *bufptr++='\''; 148 *bufptr++ = '\'';
154 *bufptr++='\\'; 149 *bufptr++ = '\\';
155 *bufptr++='!'; 150 *bufptr++ = '!';
156 *bufptr++='\''; 151 *bufptr++ = '\'';
157 } else if (shell==TCSH && *argptr=='\n') { 152 } else if (shell == TCSH && *argptr == '\n') {
158 /* Newline: replace it with: \n */ 153 /* Newline: replace it with: \n */
159 *bufptr++='\\'; 154 *bufptr++ = '\\';
160 *bufptr++='n'; 155 *bufptr++ = 'n';
161 } else if (shell==TCSH && isspace(*argptr)) { 156 } else if (shell == TCSH && isspace(*argptr)) {
162 /* Non-newline whitespace: replace it with \<ws> */ 157 /* Non-newline whitespace: replace it with \<ws> */
163 *bufptr++='\''; 158 *bufptr++ = '\'';
164 *bufptr++='\\'; 159 *bufptr++ = '\\';
165 *bufptr++=*argptr; 160 *bufptr++ = *argptr;
166 *bufptr++='\''; 161 *bufptr++ = '\'';
167 } else 162 } else
168 /* Just copy */ 163 /* Just copy */
169 *bufptr++=*argptr; 164 *bufptr++ = *argptr;
170 argptr++; 165 argptr++;
171 } 166 }
172 *bufptr++='\''; 167 *bufptr++ = '\'';
173 *bufptr++='\0'; 168 *bufptr++ = '\0';
174 return BUFFER; 169 return BUFFER;
175} 170}
176 171
177/* 172/*
178 * Generate the output. argv[0] is the program name (used for reporting errors). 173 * Generate the output. argv[0] is the program name (used for reporting errors).
179 * argv[1..] contains the options to be parsed. argc must be the number of 174 * argv[1..] contains the options to be parsed. argc must be the number of
180 * elements in argv (ie. 1 if there are no options, only the program name), 175 * elements in argv (ie. 1 if there are no options, only the program name),
181 * optstr must contain the short options, and longopts the long options. 176 * optstr must contain the short options, and longopts the long options.
182 * Other settings are found in global variables. 177 * Other settings are found in global variables.
183 */ 178 */
184int generate_output(char * argv[],int argc,const char *optstr, 179static int generate_output(char *argv[], int argc, const char *optstr,
185 const struct option *longopts) 180 const struct option *longopts)
186{ 181{
187 int exit_code = 0; /* Assume everything will be OK */ 182 int exit_code = EXIT_SUCCESS; /* Assume everything will be OK */
188 int opt; 183 int opt;
189 int longindex; 184 int longindex;
190 const char *charptr; 185 const char *charptr;
191 186
192 if (quiet_errors) 187 if (quiet_errors)
193 /* No error reporting from getopt(3) */ 188 /* No error reporting from getopt(3) */
194 opterr=0; 189 opterr = 0;
195 /* Reset getopt(3) */ 190 /* Reset getopt(3) */
196 optind=0; 191 optind = 0;
197 192
198 while ((opt = (alternative? 193 while ((opt =
199 getopt_long_only(argc,argv,optstr,longopts,&longindex):
200 getopt_long(argc,argv,optstr,longopts,&longindex))) 194 (getopt_long_fp(argc, argv, optstr, longopts, &longindex)))
201 != EOF) 195 != EOF)
202 if (opt == '?' || opt == ':' ) 196 if (opt == '?' || opt == ':')
203 exit_code = 1; 197 exit_code = GETOPT_EXIT_CODE;
204 else if (!quiet_output) 198 else if (!quiet_output) {
205 {
206 if (opt == LONG_OPT) { 199 if (opt == LONG_OPT) {
207 printf(" --%s",longopts[longindex].name); 200 printf(" --%s", longopts[longindex].name);
208 if (longopts[longindex].has_arg) 201 if (longopts[longindex].has_arg)
209 printf(" %s",
210 normalize(optarg?optarg:"")); 202 printf(" %s", normalize(optarg ? optarg : ""));
211 } else if (opt == NON_OPT) 203 } else if (opt == NON_OPT)
212 printf(" %s",normalize(optarg)); 204 printf(" %s", normalize(optarg ? optarg : ""));
213 else { 205 else {
214 printf(" -%c",opt); 206 printf(" -%c", opt);
215 charptr = strchr(optstr,opt); 207 charptr = strchr(optstr, opt);
216 if (charptr != NULL && *++charptr == ':') 208 if (charptr != NULL && *++charptr == ':')
217 printf(" %s",
218 normalize(optarg?optarg:"")); 209 printf(" %s", normalize(optarg ? optarg : ""));
219 } 210 }
220 } 211 }
221 212
222 if (! quiet_output) { 213 if (!quiet_output) {
223 printf(" --"); 214 printf(" --");
224 while (optind < argc) 215 while (optind < argc)
225 printf(" %s",normalize(argv[optind++])); 216 printf(" %s", normalize(argv[optind++]));
226 printf("\n"); 217 printf("\n");
227 } 218 }
228 return exit_code; 219 return exit_code;
229} 220}
230 221
231/* 222/*
232 * Report an error when parsing getopt's own arguments. If message is NULL, 223 * Report an error when parsing getopt's own arguments. If message is NULL,
233 * we already sent a message, we just exit with a helpful hint. 224 * we already sent a message, we just exit with a helpful hint.
234 */ 225 */
235void parse_error(const char *message) 226static void __attribute__ ((__noreturn__)) parse_error(const char *message)
236{ 227{
237 if (message) 228 if (message)
238 fprintf(stderr,"getopt: %s\n",message); 229 warnx("%s", message);
239 fputs(_("Try `getopt --help' for more information.\n"),stderr); 230 fprintf(stderr, _("Try `%s --help' for more information.\n"),
240 exit(2); 231 program_invocation_short_name);
232 exit(PARAMETER_EXIT_CODE);
241} 233}
242 234
243static struct option *long_options=NULL; 235static struct option *long_options = NULL;
244static int long_options_length=0; /* Length of array */ 236static int long_options_length = 0; /* Length of array */
245static int long_options_nr=0; /* Nr of used elements in array */ 237static int long_options_nr = 0; /* Nr of used elements in array */
246#define LONG_OPTIONS_INCR 10 238#define LONG_OPTIONS_INCR 10
247#define init_longopt() add_longopt(NULL,0) 239#define init_longopt() add_longopt(NULL,0)
248 240
249/* Register a long option. The contents of name is copied. */ 241/* Register a long option. The contents of name is copied. */
250void add_longopt(const char *name,int has_arg) 242static void add_longopt(const char *name, int has_arg)
251{ 243{
252 char *tmp; 244 char *tmp;
245 static int flag;
246
253 if (!name) { 247 if (!name) {
254 /* init */ 248 /* init */
255 free(long_options); 249 free(long_options);
256 long_options=NULL; 250 long_options = NULL;
257 long_options_length=0; 251 long_options_length = 0;
258 long_options_nr=0; 252 long_options_nr = 0;
259 } 253 }
260 254
261 if (long_options_nr == long_options_length) { 255 if (long_options_nr == long_options_length) {
262 long_options_length += LONG_OPTIONS_INCR; 256 long_options_length += LONG_OPTIONS_INCR;
263 long_options=our_realloc(long_options, 257 long_options = xrealloc(long_options,
264 sizeof(struct option) * 258 sizeof(struct option) *
265 long_options_length); 259 long_options_length);
266 } 260 }
267 261
268 long_options[long_options_nr].name=NULL; 262 long_options[long_options_nr].name = NULL;
269 long_options[long_options_nr].has_arg=0; 263 long_options[long_options_nr].has_arg = 0;
270 long_options[long_options_nr].flag=NULL; 264 long_options[long_options_nr].flag = NULL;
271 long_options[long_options_nr].val=0; 265 long_options[long_options_nr].val = 0;
272 266
273 if (long_options_nr) { 267 if (long_options_nr && name) {
274 /* Not for init! */ 268 /* Not for init! */
275 long_options[long_options_nr-1].has_arg=has_arg; 269 long_options[long_options_nr - 1].has_arg = has_arg;
276 long_options[long_options_nr-1].flag=NULL; 270 long_options[long_options_nr - 1].flag = &flag;
277 long_options[long_options_nr-1].val=LONG_OPT; 271 long_options[long_options_nr - 1].val = long_options_nr;
278 tmp = our_malloc(strlen(name)+1); 272 tmp = xmalloc(strlen(name) + 1);
279 strcpy(tmp,name); 273 strcpy(tmp, name);
280 long_options[long_options_nr-1].name=tmp; 274 long_options[long_options_nr - 1].name = tmp;
281 } 275 }
282 long_options_nr++; 276 long_options_nr++;
283} 277}
284
285 278
279
286/* 280/*
287 * Register several long options. options is a string of long options, 281 * Register several long options. options is a string of long options,
288 * separated by commas or whitespace. This nukes options! 282 * separated by commas or whitespace. This nukes options!
289 */ 283 */
290void add_long_options(char *options) 284static void add_long_options(char *options)
291{ 285{
292 int arg_opt; 286 int arg_opt;
293 char *tokptr=strtok(options,", \t\n"); 287 char *tokptr = strtok(options, ", \t\n");
294 while (tokptr) { 288 while (tokptr) {
295 arg_opt=no_argument; 289 arg_opt = no_argument;
296 if (strlen(tokptr) > 0) { 290 if (strlen(tokptr) > 0) {
297 if (tokptr[strlen(tokptr)-1] == ':') { 291 if (tokptr[strlen(tokptr) - 1] == ':') {
298 if (tokptr[strlen(tokptr)-2] == ':') { 292 if (tokptr[strlen(tokptr) - 2] == ':') {
299 tokptr[strlen(tokptr)-2]='\0'; 293 tokptr[strlen(tokptr) - 2] = '\0';
300 arg_opt=optional_argument; 294 arg_opt = optional_argument;
301 } else { 295 } else {
302 tokptr[strlen(tokptr)-1]='\0'; 296 tokptr[strlen(tokptr) - 1] = '\0';
303 arg_opt=required_argument; 297 arg_opt = required_argument;
304 } 298 }
305 if (strlen(tokptr) == 0) 299 if (strlen(tokptr) == 0)
300 parse_error(_
306 parse_error(_("empty long option after " 301 ("empty long option after "
307 "-l or --long argument")); 302 "-l or --long argument"));
308 } 303 }
309 add_longopt(tokptr,arg_opt); 304 add_longopt(tokptr, arg_opt);
310 } 305 }
311 tokptr=strtok(NULL,", \t\n"); 306 tokptr = strtok(NULL, ", \t\n");
312 } 307 }
313} 308}
314 309
315void set_shell(const char *new_shell) 310static void set_shell(const char *new_shell)
316{ 311{
317 if (!strcmp(new_shell,"bash")) 312 if (!strcmp(new_shell, "bash"))
318 shell=BASH; 313 shell = BASH;
319 else if (!strcmp(new_shell,"tcsh")) 314 else if (!strcmp(new_shell, "tcsh"))
320 shell=TCSH; 315 shell = TCSH;
321 else if (!strcmp(new_shell,"sh")) 316 else if (!strcmp(new_shell, "sh"))
322 shell=BASH; 317 shell = BASH;
323 else if (!strcmp(new_shell,"csh")) 318 else if (!strcmp(new_shell, "csh"))
324 shell=TCSH; 319 shell = TCSH;
325 else 320 else
321 parse_error(_
326 parse_error(_("unknown shell after -s or --shell argument")); 322 ("unknown shell after -s or --shell argument"));
327} 323}
328 324
329void print_help(void) 325static void __attribute__ ((__noreturn__)) print_help(void)
330{ 326{
331 fputs(_("Usage: getopt optstring parameters\n"),stderr); 327 fputs(USAGE_HEADER, stderr);
332 fputs(_(" getopt [options] [--] optstring parameters\n"),stderr); 328 fprintf(stderr, _(
333 fputs(_(" getopt [options] -o|--options optstring [options] [--]\n"),stderr); 329 " %1$s optstring parameters\n"
334 fputs(_(" parameters\n"),stderr); 330 " %1$s [options] [--] optstring parameters\n"
331 " %1$s [options] -o|--options optstring [options] [--] parameters\n"),
332 program_invocation_short_name);
333
334 fputs(USAGE_OPTIONS, stderr);
335 fputs(_(" -a, --alternative Allow long options starting with single -\n"),stderr); 335 fputs(_(" -a, --alternative Allow long options starting with single -\n"), stderr);
336 fputs(_(" -h, --help This small usage guide\n"),stderr);
337 fputs(_(" -l, --longoptions=longopts Long options to be recognized\n"),stderr); 336 fputs(_(" -l, --longoptions <longopts> Long options to be recognized\n"), stderr);
338 fputs(_(" -n, --name=progname The name under which errors are reported\n"),stderr); 337 fputs(_(" -n, --name <progname> The name under which errors are reported\n"), stderr);
339 fputs(_(" -o, --options=optstring Short options to be recognized\n"),stderr); 338 fputs(_(" -o, --options <optstring> Short options to be recognized\n"), stderr);
340 fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"),stderr); 339 fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"), stderr);
341 fputs(_(" -Q, --quiet-output No normal output\n"),stderr); 340 fputs(_(" -Q, --quiet-output No normal output\n"), stderr);
342 fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr); 341 fputs(_(" -s, --shell <shell> Set shell quoting conventions\n"), stderr);
343 fputs(_(" -T, --test Test for getopt(1) version\n"),stderr); 342 fputs(_(" -T, --test Test for getopt(1) version\n"), stderr);
344 fputs(_(" -u, --unqote Do not quote the output\n"),stderr); 343 fputs(_(" -u, --unquoted Do not quote the output\n"), stderr);
345 fputs(_(" -V, --version Output version information\n"),stderr); 344 fputs(USAGE_SEPARATOR, stderr);
346 exit(2); 345 fputs(USAGE_HELP, stderr);
346 fputs(USAGE_VERSION, stderr);
347 fprintf(stderr, USAGE_MAN_TAIL("getopt(1)"));
348 exit(PARAMETER_EXIT_CODE);
347} 349}
348
349/* Exit codes:
350 * 0) No errors, succesful operation.
351 * 1) getopt(3) returned an error.
352 * 2) A problem with parameter parsing for getopt(1).
353 * 3) Internal error, out of memory
354 * 4) Returned for -T
355 */
356
357static struct option longopts[]={ {"options",required_argument,NULL,'o'},
358 {"longoptions",required_argument,NULL,'l'},
359 {"quiet",no_argument,NULL,'q'},
360 {"quiet-output",no_argument,NULL,'Q'},
361 {"shell",required_argument,NULL,'s'},
362 {"test",no_argument,NULL,'T'},
363 {"unquoted",no_argument,NULL,'u'},
364 {"help",no_argument,NULL,'h'},
365 {"alternative",no_argument,NULL,'a'},
366 {"name",required_argument,NULL,'n'},
367 {"version",no_argument,NULL,'V'},
368 {NULL,0,NULL,0}
369 };
370
371/* Stop scanning as soon as a non-option argument is found! */
372static const char *shortopts="+ao:l:n:qQs:TuhV";
373 350
374int main(int argc, char *argv[]) 351int main(int argc, char *argv[])
375{ 352{
376 char *optstr=NULL; 353 char *optstr = NULL;
377 char *name=NULL; 354 char *name = NULL;
378 int opt; 355 int opt;
379 int compatible=0; 356 int compatible = 0;
380 357
381#if WITHOUT_GETTEXT 358 /* Stop scanning as soon as a non-option argument is found! */
382#else 359 static const char *shortopts = "+ao:l:n:qQs:TuhV";
360 static const struct option longopts[] = {
361 {"options", required_argument, NULL, 'o'},
362 {"longoptions", required_argument, NULL, 'l'},
363 {"quiet", no_argument, NULL, 'q'},
364 {"quiet-output", no_argument, NULL, 'Q'},
365 {"shell", required_argument, NULL, 's'},
366 {"test", no_argument, NULL, 'T'},
367 {"unquoted", no_argument, NULL, 'u'},
368 {"help", no_argument, NULL, 'h'},
369 {"alternative", no_argument, NULL, 'a'},
370 {"name", required_argument, NULL, 'n'},
371 {"version", no_argument, NULL, 'V'},
372 {NULL, 0, NULL, 0}
373 };
374
383 setlocale(LC_ALL,""); 375 setlocale(LC_ALL, "");
384 bindtextdomain(PACKAGE, LOCALEDIR); 376 bindtextdomain(PACKAGE, LOCALEDIR);
385 textdomain(PACKAGE); 377 textdomain(PACKAGE);
386#endif
387 378
388 init_longopt(); 379 init_longopt();
380 getopt_long_fp = getopt_long;
389 381
390 if (getenv("GETOPT_COMPATIBLE")) 382 if (getenv("GETOPT_COMPATIBLE"))
391 compatible=1; 383 compatible = 1;
392 384
393 if (argc == 1) 385 if (argc == 1) {
394 {
395 if (compatible) { 386 if (compatible) {
396 /* 387 /*
397 * For some reason, the original getopt gave no error 388 * For some reason, the original getopt gave no
398 * when there were no arguments. 389 * error when there were no arguments.
399 */ 390 */
400 printf(" --\n"); 391 printf(" --\n");
401 exit(0); 392 return EXIT_SUCCESS;
402 }
403 else 393 } else
404 parse_error(_("missing optstring argument")); 394 parse_error(_("missing optstring argument"));
405 } 395 }
406 396
407 if (argv[1][0] != '-' || compatible) { 397 if (argv[1][0] != '-' || compatible) {
408 quote=0; 398 quote = 0;
409 optstr=our_malloc(strlen(argv[1])+1); 399 optstr = xmalloc(strlen(argv[1]) + 1);
410 strcpy(optstr,argv[1]+strspn(argv[1],"-+")); 400 strcpy(optstr, argv[1] + strspn(argv[1], "-+"));
411 argv[1]=argv[0]; 401 argv[1] = argv[0];
412 exit(generate_output(argv+1,argc-1,optstr,long_options)); 402 return generate_output(argv + 1, argc - 1, optstr,
403 long_options);
413 } 404 }
414 405
406 while ((opt =
415 while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF) 407 getopt_long(argc, argv, shortopts, longopts, NULL)) != EOF)
416 switch (opt) { 408 switch (opt) {
417 case 'a': 409 case 'a':
418 alternative=1; 410 getopt_long_fp = getopt_long_only;
419 break; 411 break;
420 case 'h': 412 case 'h':
421 print_help(); 413 print_help();
422 exit(0);
423 case 'o': 414 case 'o':
424 if (optstr)
425 free(optstr); 415 free(optstr);
426 optstr=our_malloc(strlen(optarg)+1); 416 optstr = xmalloc(strlen(optarg) + 1);
427 strcpy(optstr,optarg); 417 strcpy(optstr, optarg);
428 break; 418 break;
429 case 'l': 419 case 'l':
430 add_long_options(optarg); 420 add_long_options(optarg);
431 break; 421 break;
432 case 'n': 422 case 'n':
433 if (name)
434 free(name); 423 free(name);
435 name=our_malloc(strlen(optarg)+1); 424 name = xmalloc(strlen(optarg) + 1);
436 strcpy(name,optarg); 425 strcpy(name, optarg);
437 break; 426 break;
438 case 'q': 427 case 'q':
439 quiet_errors=1; 428 quiet_errors = 1;
440 break; 429 break;
441 case 'Q': 430 case 'Q':
442 quiet_output=1; 431 quiet_output = 1;
443 break; 432 break;
444 case 's': 433 case 's':
445 set_shell(optarg); 434 set_shell(optarg);
446 break; 435 break;
447 case 'T': 436 case 'T':
448 exit(4); 437 return TEST_EXIT_CODE;
449 case 'u': 438 case 'u':
450 quote=0; 439 quote = 0;
451 break; 440 break;
452 case 'V': 441 case 'V':
453 printf(_("getopt (enhanced) 1.1.4\n")); 442 printf(UTIL_LINUX_VERSION);
454 exit(0); 443 return EXIT_SUCCESS;
455 case '?': 444 case '?':
456 case ':': 445 case ':':
457 parse_error(NULL); 446 parse_error(NULL);
458 default: 447 default:
459 parse_error(_("internal error, contact the author.")); 448 parse_error(_("internal error, contact the author."));
460 } 449 }
461 450
462 if (!optstr) 451 if (!optstr) {
463 {
464 if (optind >= argc) 452 if (optind >= argc)
465 parse_error(_("missing optstring argument")); 453 parse_error(_("missing optstring argument"));
466 else { 454 else {
467 optstr=our_malloc(strlen(argv[optind])+1); 455 optstr = xmalloc(strlen(argv[optind]) + 1);
468 strcpy(optstr,argv[optind]); 456 strcpy(optstr, argv[optind]);
469 optind++; 457 optind++;
470 } 458 }
471 } 459 }
472 if (name) 460 if (name)
473 argv[optind-1]=name; 461 argv[optind - 1] = name;
474 else 462 else
475 argv[optind-1]=argv[0]; 463 argv[optind - 1] = argv[0];
476 exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options)); 464
465 return generate_output(argv + optind - 1, argc-optind + 1,
466 optstr, long_options);
477} 467}
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