| 1 |
/* |
| 2 |
getopt.c - Enhanced implementation of BSD getopt(1) |
| 3 |
Copyright (c) 1997, 1998, 1999, 2000 Frodo Looijaard <frodol@dds.nl> |
| 4 |
|
| 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 |
| 7 |
the Free Software Foundation; either version 2 of the License, or |
| 8 |
(at your option) any later version. |
| 9 |
|
| 10 |
This program is distributed in the hope that it will be useful, |
| 11 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 |
GNU General Public License for more details. |
| 14 |
|
| 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 |
| 17 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 |
*/ |
| 19 |
|
| 20 |
/* |
| 21 |
* Version 1.0-b4: Tue Sep 23 1997. First public release. |
| 22 |
* Version 1.0: Wed Nov 19 1997. |
| 23 |
* Bumped up the version number to 1.0 |
| 24 |
* Fixed minor typo (CSH instead of TCSH) |
| 25 |
* Version 1.0.1: Tue Jun 3 1998 |
| 26 |
* Fixed sizeof instead of strlen bug |
| 27 |
* Bumped up the version number to 1.0.1 |
| 28 |
* Version 1.0.2: Thu Jun 11 1998 (not present) |
| 29 |
* Fixed gcc-2.8.1 warnings |
| 30 |
* Fixed --version/-V option (not present) |
| 31 |
* Version 1.0.5: Tue Jun 22 1999 |
| 32 |
* Make -u option work (not present) |
| 33 |
* Version 1.0.6: Tue Jun 27 2000 |
| 34 |
* No important changes |
| 35 |
* Version 1.1.0: Tue Jun 30 2000 |
| 36 |
* Added NLS support (partly written by Arkadiusz Mi<B6>kiewicz |
| 37 |
* <misiek@pld.org.pl>) |
| 38 |
*/ |
| 39 |
|
| 40 |
#include <stdio.h> |
| 41 |
#include <stdlib.h> |
| 42 |
#include <string.h> |
| 43 |
#include <unistd.h> |
| 44 |
#include <ctype.h> |
| 45 |
|
| 46 |
#if LIBCGETOPT |
| 47 |
#include <getopt.h> |
| 48 |
#else |
| 49 |
#include "getopt.h" |
| 50 |
#endif |
| 51 |
|
| 52 |
#include "nls.h" |
| 53 |
|
| 54 |
/* NON_OPT is the code that is returned when a non-option is found in '+' |
| 55 |
mode */ |
| 56 |
#define NON_OPT 1 |
| 57 |
/* LONG_OPT is the code that is returned when a long option is found. */ |
| 58 |
#define LONG_OPT 2 |
| 59 |
|
| 60 |
/* The shells recognized. */ |
| 61 |
typedef enum {BASH,TCSH} shell_t; |
| 62 |
|
| 63 |
|
| 64 |
/* Some global variables that tells us how to parse. */ |
| 65 |
shell_t shell=BASH; /* The shell we generate output for. */ |
| 66 |
int quiet_errors=0; /* 0 is not quiet. */ |
| 67 |
int quiet_output=0; /* 0 is not quiet. */ |
| 68 |
int quote=1; /* 1 is do quote. */ |
| 69 |
int alternative=0; /* 0 is getopt_long, 1 is getopt_long_only */ |
| 70 |
|
| 71 |
/* Function prototypes */ |
| 72 |
void *our_malloc(size_t size); |
| 73 |
void *our_realloc(void *ptr, size_t size); |
| 74 |
const char *normalize(const char *arg); |
| 75 |
int generate_output(char * argv[],int argc,const char *optstr, |
| 76 |
const struct option *longopts); |
| 77 |
int main(int argc, char *argv[]); |
| 78 |
void parse_error(const char *message); |
| 79 |
void add_long_options(char *options); |
| 80 |
void add_longopt(const char *name,int has_arg); |
| 81 |
void print_help(void); |
| 82 |
void set_shell(const char *new_shell); |
| 83 |
void set_initial_shell(void); |
| 84 |
|
| 85 |
void *our_malloc(size_t size) |
| 86 |
{ |
| 87 |
void *ret=malloc(size); |
| 88 |
if (! ret) { |
| 89 |
fprintf(stderr,_("%s: Out of memory!\n"),"getopt"); |
| 90 |
exit(3); |
| 91 |
} |
| 92 |
return(ret); |
| 93 |
} |
| 94 |
|
| 95 |
void *our_realloc(void *ptr, size_t size) |
| 96 |
{ |
| 97 |
void *ret=realloc(ptr,size); |
| 98 |
if (! ret && size) { |
| 99 |
fprintf(stderr,_("%s: Out of memory!\n"),"getopt"); |
| 100 |
exit(3); |
| 101 |
} |
| 102 |
return(ret); |
| 103 |
} |
| 104 |
|
| 105 |
/* |
| 106 |
* This function 'normalizes' a single argument: it puts single quotes around |
| 107 |
* it and escapes other special characters. If quote is false, it just |
| 108 |
* returns its argument. |
| 109 |
* Bash only needs special treatment for single quotes; tcsh also recognizes |
| 110 |
* exclamation marks within single quotes, and nukes whitespace. |
| 111 |
* This function returns a pointer to a buffer that is overwritten by |
| 112 |
* each call. |
| 113 |
*/ |
| 114 |
const char *normalize(const char *arg) |
| 115 |
{ |
| 116 |
static char *BUFFER=NULL; |
| 117 |
const char *argptr=arg; |
| 118 |
char *bufptr; |
| 119 |
|
| 120 |
if (BUFFER != NULL) |
| 121 |
free(BUFFER); |
| 122 |
|
| 123 |
if (!quote) { /* Just copy arg */ |
| 124 |
BUFFER=our_malloc(strlen(arg)+1); |
| 125 |
|
| 126 |
strcpy(BUFFER,arg); |
| 127 |
return BUFFER; |
| 128 |
} |
| 129 |
|
| 130 |
/* Each character in arg may take upto four characters in the result: |
| 131 |
For a quote we need a closing quote, a backslash, a quote and an |
| 132 |
opening quote! We need also the global opening and closing quote, |
| 133 |
and one extra character for '\0'. */ |
| 134 |
BUFFER=our_malloc(strlen(arg)*4+3); |
| 135 |
|
| 136 |
bufptr=BUFFER; |
| 137 |
*bufptr++='\''; |
| 138 |
|
| 139 |
while (*argptr) { |
| 140 |
if (*argptr == '\'') { |
| 141 |
/* Quote: replace it with: '\'' */ |
| 142 |
*bufptr++='\''; |
| 143 |
*bufptr++='\\'; |
| 144 |
*bufptr++='\''; |
| 145 |
*bufptr++='\''; |
| 146 |
} else if (shell==TCSH && *argptr=='!') { |
| 147 |
/* Exclamation mark: replace it with: \! */ |
| 148 |
*bufptr++='\''; |
| 149 |
*bufptr++='\\'; |
| 150 |
*bufptr++='!'; |
| 151 |
*bufptr++='\''; |
| 152 |
} else if (shell==TCSH && *argptr=='\n') { |
| 153 |
/* Newline: replace it with: \n */ |
| 154 |
*bufptr++='\\'; |
| 155 |
*bufptr++='n'; |
| 156 |
} else if (shell==TCSH && isspace(*argptr)) { |
| 157 |
/* Non-newline whitespace: replace it with \<ws> */ |
| 158 |
*bufptr++='\''; |
| 159 |
*bufptr++='\\'; |
| 160 |
*bufptr++=*argptr; |
| 161 |
*bufptr++='\''; |
| 162 |
} else |
| 163 |
/* Just copy */ |
| 164 |
*bufptr++=*argptr; |
| 165 |
argptr++; |
| 166 |
} |
| 167 |
*bufptr++='\''; |
| 168 |
*bufptr++='\0'; |
| 169 |
return BUFFER; |
| 170 |
} |
| 171 |
|
| 172 |
/* |
| 173 |
* Generate the output. argv[0] is the program name (used for reporting errors). |
| 174 |
* argv[1..] contains the options to be parsed. argc must be the number of |
| 175 |
* elements in argv (ie. 1 if there are no options, only the program name), |
| 176 |
* optstr must contain the short options, and longopts the long options. |
| 177 |
* Other settings are found in global variables. |
| 178 |
*/ |
| 179 |
int generate_output(char * argv[],int argc,const char *optstr, |
| 180 |
const struct option *longopts) |
| 181 |
{ |
| 182 |
int exit_code = 0; /* We assume everything will be OK */ |
| 183 |
int opt; |
| 184 |
int longindex; |
| 185 |
const char *charptr; |
| 186 |
|
| 187 |
if (quiet_errors) /* No error reporting from getopt(3) */ |
| 188 |
opterr=0; |
| 189 |
optind=0; /* Reset getopt(3) */ |
| 190 |
|
| 191 |
while ((opt = (alternative? |
| 192 |
getopt_long_only(argc,argv,optstr,longopts,&longindex): |
| 193 |
getopt_long(argc,argv,optstr,longopts,&longindex))) |
| 194 |
!= EOF) |
| 195 |
if (opt == '?' || opt == ':' ) |
| 196 |
exit_code = 1; |
| 197 |
else if (!quiet_output) |
| 198 |
{ |
| 199 |
if (opt == LONG_OPT) { |
| 200 |
printf(" --%s",longopts[longindex].name); |
| 201 |
if (longopts[longindex].has_arg) |
| 202 |
printf(" %s", |
| 203 |
normalize(optarg?optarg:"")); |
| 204 |
} else if (opt == NON_OPT) |
| 205 |
printf(" %s",normalize(optarg)); |
| 206 |
else { |
| 207 |
printf(" -%c",opt); |
| 208 |
charptr = strchr(optstr,opt); |
| 209 |
if (charptr != NULL && *++charptr == ':') |
| 210 |
printf(" %s", |
| 211 |
normalize(optarg?optarg:"")); |
| 212 |
} |
| 213 |
} |
| 214 |
|
| 215 |
if (! quiet_output) { |
| 216 |
printf(" --"); |
| 217 |
while (optind < argc) |
| 218 |
printf(" %s",normalize(argv[optind++])); |
| 219 |
printf("\n"); |
| 220 |
} |
| 221 |
return exit_code; |
| 222 |
} |
| 223 |
|
| 224 |
/* |
| 225 |
* Report an error when parsing getopt's own arguments. |
| 226 |
* If message is NULL, we already sent a message, we just exit with a helpful |
| 227 |
* hint. |
| 228 |
*/ |
| 229 |
void parse_error(const char *message) |
| 230 |
{ |
| 231 |
if (message) |
| 232 |
fprintf(stderr,"getopt: %s\n",message); |
| 233 |
fputs(_("Try `getopt --help' for more information.\n"),stderr); |
| 234 |
exit(2); |
| 235 |
} |
| 236 |
|
| 237 |
static struct option *long_options=NULL; |
| 238 |
static int long_options_length=0; /* Length of array */ |
| 239 |
static int long_options_nr=0; /* Nr of used elements in array */ |
| 240 |
#define LONG_OPTIONS_INCR 10 |
| 241 |
#define init_longopt() add_longopt(NULL,0) |
| 242 |
|
| 243 |
/* Register a long option. The contents of name is copied. */ |
| 244 |
void add_longopt(const char *name,int has_arg) |
| 245 |
{ |
| 246 |
char *tmp; |
| 247 |
if (!name) { /* init */ |
| 248 |
free(long_options); |
| 249 |
long_options=NULL; |
| 250 |
long_options_length=0; |
| 251 |
long_options_nr=0; |
| 252 |
} |
| 253 |
|
| 254 |
if (long_options_nr == long_options_length) { |
| 255 |
long_options_length += LONG_OPTIONS_INCR; |
| 256 |
long_options=our_realloc(long_options, |
| 257 |
sizeof(struct option) * |
| 258 |
long_options_length); |
| 259 |
} |
| 260 |
|
| 261 |
long_options[long_options_nr].name=NULL; |
| 262 |
long_options[long_options_nr].has_arg=0; |
| 263 |
long_options[long_options_nr].flag=NULL; |
| 264 |
long_options[long_options_nr].val=0; |
| 265 |
|
| 266 |
if (long_options_nr) { /* Not for init! */ |
| 267 |
long_options[long_options_nr-1].has_arg=has_arg; |
| 268 |
long_options[long_options_nr-1].flag=NULL; |
| 269 |
long_options[long_options_nr-1].val=LONG_OPT; |
| 270 |
tmp = our_malloc(strlen(name)+1); |
| 271 |
strcpy(tmp,name); |
| 272 |
long_options[long_options_nr-1].name=tmp; |
| 273 |
} |
| 274 |
long_options_nr++; |
| 275 |
} |
| 276 |
|
| 277 |
|
| 278 |
/* |
| 279 |
* Register several long options. options is a string of long options, |
| 280 |
* separated by commas or whitespace. |
| 281 |
* This nukes options! |
| 282 |
*/ |
| 283 |
void add_long_options(char *options) |
| 284 |
{ |
| 285 |
int arg_opt; |
| 286 |
char *tokptr=strtok(options,", \t\n"); |
| 287 |
while (tokptr) { |
| 288 |
arg_opt=no_argument; |
| 289 |
if (strlen(tokptr) > 0) { |
| 290 |
if (tokptr[strlen(tokptr)-1] == ':') { |
| 291 |
if (tokptr[strlen(tokptr)-2] == ':') { |
| 292 |
tokptr[strlen(tokptr)-2]='\0'; |
| 293 |
arg_opt=optional_argument; |
| 294 |
} else { |
| 295 |
tokptr[strlen(tokptr)-1]='\0'; |
| 296 |
arg_opt=required_argument; |
| 297 |
} |
| 298 |
if (strlen(tokptr) == 0) |
| 299 |
parse_error(_("empty long option after " |
| 300 |
"-l or --long argument")); |
| 301 |
} |
| 302 |
add_longopt(tokptr,arg_opt); |
| 303 |
} |
| 304 |
tokptr=strtok(NULL,", \t\n"); |
| 305 |
} |
| 306 |
} |
| 307 |
|
| 308 |
void set_shell(const char *new_shell) |
| 309 |
{ |
| 310 |
if (!strcmp(new_shell,"bash")) |
| 311 |
shell=BASH; |
| 312 |
else if (!strcmp(new_shell,"tcsh")) |
| 313 |
shell=TCSH; |
| 314 |
else if (!strcmp(new_shell,"sh")) |
| 315 |
shell=BASH; |
| 316 |
else if (!strcmp(new_shell,"csh")) |
| 317 |
shell=TCSH; |
| 318 |
else |
| 319 |
parse_error(_("unknown shell after -s or --shell argument")); |
| 320 |
} |
| 321 |
|
| 322 |
void print_help(void) |
| 323 |
{ |
| 324 |
fputs(_("Usage: getopt optstring parameters\n"),stderr); |
| 325 |
fputs(_(" getopt [options] [--] optstring parameters\n"),stderr); |
| 326 |
fputs(_(" getopt [options] -o|--options optstring [options] [--]\n"),stderr); |
| 327 |
fputs(_(" parameters\n"),stderr); |
| 328 |
fputs(_(" -a, --alternative Allow long options starting with single -\n"),stderr); |
| 329 |
fputs(_(" -h, --help This small usage guide\n"),stderr); |
| 330 |
fputs(_(" -l, --longoptions=longopts Long options to be recognized\n"),stderr); |
| 331 |
fputs(_(" -n, --name=progname The name under which errors are reported\n"),stderr); |
| 332 |
fputs(_(" -o, --options=optstring Short options to be recognized\n"),stderr); |
| 333 |
fputs(_(" -q, --quiet Disable error reporting by getopt(3)\n"),stderr); |
| 334 |
fputs(_(" -Q, --quiet-output No normal output\n"),stderr); |
| 335 |
fputs(_(" -s, --shell=shell Set shell quoting conventions\n"),stderr); |
| 336 |
fputs(_(" -T, --test Test for getopt(1) version\n"),stderr); |
| 337 |
fputs(_(" -u, --unqote Do not quote the output\n"),stderr); |
| 338 |
fputs(_(" -V, --version Output version information\n"),stderr); |
| 339 |
exit(2); |
| 340 |
} |
| 341 |
|
| 342 |
/* Exit codes: |
| 343 |
* 0) No errors, succesful operation. |
| 344 |
* 1) getopt(3) returned an error. |
| 345 |
* 2) A problem with parameter parsing for getopt(1). |
| 346 |
* 3) Internal error, out of memory |
| 347 |
* 4) Returned for -T |
| 348 |
*/ |
| 349 |
|
| 350 |
static struct option longopts[]={ {"options",required_argument,NULL,'o'}, |
| 351 |
{"longoptions",required_argument,NULL,'l'}, |
| 352 |
{"quiet",no_argument,NULL,'q'}, |
| 353 |
{"quiet-output",no_argument,NULL,'Q'}, |
| 354 |
{"shell",required_argument,NULL,'s'}, |
| 355 |
{"test",no_argument,NULL,'T'}, |
| 356 |
{"unquoted",no_argument,NULL,'u'}, |
| 357 |
{"help",no_argument,NULL,'h'}, |
| 358 |
{"alternative",no_argument,NULL,'a'}, |
| 359 |
{"name",required_argument,NULL,'n'}, |
| 360 |
{"version",no_argument,NULL,'V'}, |
| 361 |
{NULL,0,NULL,0} |
| 362 |
}; |
| 363 |
|
| 364 |
/* Stop scanning as soon as a non-option argument is found! */ |
| 365 |
static const char *shortopts="+ao:l:n:qQs:TuhV"; |
| 366 |
|
| 367 |
int main(int argc, char *argv[]) |
| 368 |
{ |
| 369 |
char *optstr=NULL; |
| 370 |
char *name=NULL; |
| 371 |
int opt; |
| 372 |
int compatible=0; |
| 373 |
|
| 374 |
#if WITHOUT_GETTEXT |
| 375 |
#else |
| 376 |
setlocale(LC_ALL,""); |
| 377 |
bindtextdomain(PACKAGE, LOCALEDIR); |
| 378 |
textdomain(PACKAGE); |
| 379 |
#endif |
| 380 |
|
| 381 |
init_longopt(); |
| 382 |
|
| 383 |
if (getenv("GETOPT_COMPATIBLE")) |
| 384 |
compatible=1; |
| 385 |
|
| 386 |
if (argc == 1) |
| 387 |
{ |
| 388 |
if (compatible) { |
| 389 |
/* For some reason, the original getopt gave no error |
| 390 |
when there were no arguments. */ |
| 391 |
printf(" --\n"); |
| 392 |
exit(0); |
| 393 |
} |
| 394 |
else |
| 395 |
parse_error(_("missing optstring argument")); |
| 396 |
} |
| 397 |
|
| 398 |
if (argv[1][0] != '-' || compatible) { |
| 399 |
quote=0; |
| 400 |
optstr=our_malloc(strlen(argv[1])+1); |
| 401 |
strcpy(optstr,argv[1]+strspn(argv[1],"-+")); |
| 402 |
argv[1]=argv[0]; |
| 403 |
exit(generate_output(argv+1,argc-1,optstr,long_options)); |
| 404 |
} |
| 405 |
|
| 406 |
while ((opt=getopt_long(argc,argv,shortopts,longopts,NULL)) != EOF) |
| 407 |
switch (opt) { |
| 408 |
case 'a': |
| 409 |
alternative=1; |
| 410 |
break; |
| 411 |
case 'h': |
| 412 |
print_help(); |
| 413 |
exit(0); |
| 414 |
case 'o': |
| 415 |
if (optstr) |
| 416 |
free(optstr); |
| 417 |
optstr=our_malloc(strlen(optarg)+1); |
| 418 |
strcpy(optstr,optarg); |
| 419 |
break; |
| 420 |
case 'l': |
| 421 |
add_long_options(optarg); |
| 422 |
break; |
| 423 |
case 'n': |
| 424 |
if (name) |
| 425 |
free(name); |
| 426 |
name=our_malloc(strlen(optarg)+1); |
| 427 |
strcpy(name,optarg); |
| 428 |
break; |
| 429 |
case 'q': |
| 430 |
quiet_errors=1; |
| 431 |
break; |
| 432 |
case 'Q': |
| 433 |
quiet_output=1; |
| 434 |
break; |
| 435 |
case 's': |
| 436 |
set_shell(optarg); |
| 437 |
break; |
| 438 |
case 'T': |
| 439 |
exit(4); |
| 440 |
case 'u': |
| 441 |
quote=0; |
| 442 |
break; |
| 443 |
case 'V': |
| 444 |
printf(_("getopt (enhanced) 1.1.3\n")); |
| 445 |
exit(0); |
| 446 |
case '?': |
| 447 |
case ':': |
| 448 |
parse_error(NULL); |
| 449 |
default: |
| 450 |
parse_error(_("internal error, contact the author.")); |
| 451 |
} |
| 452 |
|
| 453 |
if (!optstr) |
| 454 |
{ |
| 455 |
if (optind >= argc) |
| 456 |
parse_error(_("missing optstring argument")); |
| 457 |
else { |
| 458 |
optstr=our_malloc(strlen(argv[optind])+1); |
| 459 |
strcpy(optstr,argv[optind]); |
| 460 |
optind++; |
| 461 |
} |
| 462 |
} |
| 463 |
if (name) |
| 464 |
argv[optind-1]=name; |
| 465 |
else |
| 466 |
argv[optind-1]=argv[0]; |
| 467 |
exit(generate_output(argv+optind-1,argc-optind+1,optstr,long_options)); |
| 468 |
} |
Parent Directory
| 
Revision Log