blob: fd08bb425c241a0861588ec0aedd15041095a95f [file] [log] [blame]
Pierre Habouzit4a59fd12007-10-15 01:35:37 +02001#include "git-compat-util.h"
2#include "parse-options.h"
Pierre Habouzit26141b52008-06-23 22:55:11 +02003#include "cache.h"
Pierre Habouzit4a59fd12007-10-15 01:35:37 +02004
5#define OPT_SHORT 1
6#define OPT_UNSET 2
7
Pierre Habouzit4a59fd12007-10-15 01:35:37 +02008static int opterror(const struct option *opt, const char *reason, int flags)
9{
10 if (flags & OPT_SHORT)
11 return error("switch `%c' %s", opt->short_name, reason);
12 if (flags & OPT_UNSET)
13 return error("option `no-%s' %s", opt->long_name, reason);
14 return error("option `%s' %s", opt->long_name, reason);
15}
16
Pierre Habouzit1cc69852008-07-08 12:34:08 +020017static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt,
18 int flags, const char **arg)
19{
20 if (p->opt) {
21 *arg = p->opt;
22 p->opt = NULL;
23 } else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) {
24 *arg = (const char *)opt->defval;
Olivier Marind5d745f2008-07-21 20:30:36 +020025 } else if (p->argc > 1) {
Pierre Habouzit1cc69852008-07-08 12:34:08 +020026 p->argc--;
27 *arg = *++p->argv;
28 } else
29 return opterror(opt, "requires a value", flags);
30 return 0;
31}
32
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +020033static int get_value(struct parse_opt_ctx_t *p,
Pierre Habouzit1cc69852008-07-08 12:34:08 +020034 const struct option *opt, int flags)
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020035{
Pierre Habouzitffe659f2007-10-15 01:45:45 +020036 const char *s, *arg;
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010037 const int unset = flags & OPT_UNSET;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020038
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010039 if (unset && p->opt)
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020040 return opterror(opt, "takes no value", flags);
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010041 if (unset && (opt->flags & PARSE_OPT_NONEG))
42 return opterror(opt, "isn't available", flags);
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020043
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010044 if (!(flags & OPT_SHORT) && p->opt) {
45 switch (opt->type) {
46 case OPTION_CALLBACK:
47 if (!(opt->flags & PARSE_OPT_NOARG))
48 break;
49 /* FALLTHROUGH */
50 case OPTION_BOOLEAN:
51 case OPTION_BIT:
52 case OPTION_SET_INT:
53 case OPTION_SET_PTR:
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020054 return opterror(opt, "takes no value", flags);
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010055 default:
56 break;
57 }
58 }
59
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010060 switch (opt->type) {
61 case OPTION_BIT:
62 if (unset)
63 *(int *)opt->value &= ~opt->defval;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020064 else
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010065 *(int *)opt->value |= opt->defval;
66 return 0;
67
68 case OPTION_BOOLEAN:
69 *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
70 return 0;
71
72 case OPTION_SET_INT:
73 *(int *)opt->value = unset ? 0 : opt->defval;
74 return 0;
75
76 case OPTION_SET_PTR:
77 *(void **)opt->value = unset ? NULL : (void *)opt->defval;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020078 return 0;
79
80 case OPTION_STRING:
Pierre Habouzit1cc69852008-07-08 12:34:08 +020081 if (unset)
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010082 *(const char **)opt->value = NULL;
Pierre Habouzit1cc69852008-07-08 12:34:08 +020083 else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
Pierre Habouzitffe659f2007-10-15 01:45:45 +020084 *(const char **)opt->value = (const char *)opt->defval;
Pierre Habouzit1cc69852008-07-08 12:34:08 +020085 else
86 return get_arg(p, opt, flags, (const char **)opt->value);
Pierre Habouzit4a59fd12007-10-15 01:35:37 +020087 return 0;
88
Pierre Habouzitffe659f2007-10-15 01:45:45 +020089 case OPTION_CALLBACK:
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010090 if (unset)
Pierre Habouzit07fe54d2008-06-23 22:46:36 +020091 return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
Pierre Habouzitdb7244b2007-11-07 11:20:27 +010092 if (opt->flags & PARSE_OPT_NOARG)
Pierre Habouzit07fe54d2008-06-23 22:46:36 +020093 return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
Pierre Habouzitc43a2482007-12-21 11:41:41 +010094 if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
Pierre Habouzit07fe54d2008-06-23 22:46:36 +020095 return (*opt->callback)(opt, NULL, 0) ? (-1) : 0;
Pierre Habouzit1cc69852008-07-08 12:34:08 +020096 if (get_arg(p, opt, flags, &arg))
97 return -1;
98 return (*opt->callback)(opt, arg, 0) ? (-1) : 0;
Pierre Habouzitffe659f2007-10-15 01:45:45 +020099
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200100 case OPTION_INTEGER:
Pierre Habouzitdb7244b2007-11-07 11:20:27 +0100101 if (unset) {
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200102 *(int *)opt->value = 0;
103 return 0;
104 }
Pierre Habouzitc43a2482007-12-21 11:41:41 +0100105 if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200106 *(int *)opt->value = opt->defval;
107 return 0;
108 }
Pierre Habouzit1cc69852008-07-08 12:34:08 +0200109 if (get_arg(p, opt, flags, &arg))
110 return -1;
111 *(int *)opt->value = strtol(arg, (char **)&s, 10);
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200112 if (*s)
113 return opterror(opt, "expects a numerical value", flags);
114 return 0;
115
116 default:
117 die("should not happen, someone must be hit on the forehead");
118 }
119}
120
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200121static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options)
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200122{
123 for (; options->type != OPTION_END; options++) {
124 if (options->short_name == *p->opt) {
125 p->opt = p->opt[1] ? p->opt + 1 : NULL;
126 return get_value(p, options, OPT_SHORT);
127 }
128 }
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200129 return -2;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200130}
131
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200132static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200133 const struct option *options)
134{
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100135 const char *arg_end = strchr(arg, '=');
Johannes Schindelin243e0612007-11-05 13:15:21 +0000136 const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
137 int abbrev_flags = 0, ambiguous_flags = 0;
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100138
139 if (!arg_end)
140 arg_end = arg + strlen(arg);
141
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200142 for (; options->type != OPTION_END; options++) {
143 const char *rest;
144 int flags = 0;
145
146 if (!options->long_name)
147 continue;
148
149 rest = skip_prefix(arg, options->long_name);
Pierre Habouzit580d5bf2008-03-02 11:35:56 +0100150 if (options->type == OPTION_ARGUMENT) {
151 if (!rest)
152 continue;
153 if (*rest == '=')
154 return opterror(options, "takes no value", flags);
155 if (*rest)
156 continue;
157 p->out[p->cpidx++] = arg - 2;
158 return 0;
159 }
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200160 if (!rest) {
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100161 /* abbreviated? */
162 if (!strncmp(options->long_name, arg, arg_end - arg)) {
163is_abbreviated:
Johannes Schindelin243e0612007-11-05 13:15:21 +0000164 if (abbrev_option) {
165 /*
166 * If this is abbreviated, it is
167 * ambiguous. So when there is no
168 * exact match later, we need to
169 * error out.
170 */
171 ambiguous_option = abbrev_option;
172 ambiguous_flags = abbrev_flags;
173 }
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100174 if (!(flags & OPT_UNSET) && *arg_end)
175 p->opt = arg_end + 1;
176 abbrev_option = options;
177 abbrev_flags = flags;
178 continue;
179 }
180 /* negated and abbreviated very much? */
181 if (!prefixcmp("no-", arg)) {
182 flags |= OPT_UNSET;
183 goto is_abbreviated;
184 }
185 /* negated? */
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200186 if (strncmp(arg, "no-", 3))
187 continue;
188 flags |= OPT_UNSET;
189 rest = skip_prefix(arg + 3, options->long_name);
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100190 /* abbreviated and negated? */
191 if (!rest && !prefixcmp(options->long_name, arg + 3))
192 goto is_abbreviated;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200193 if (!rest)
194 continue;
195 }
196 if (*rest) {
197 if (*rest != '=')
198 continue;
199 p->opt = rest + 1;
200 }
201 return get_value(p, options, flags);
202 }
Johannes Schindelin243e0612007-11-05 13:15:21 +0000203
204 if (ambiguous_option)
205 return error("Ambiguous option: %s "
206 "(could be --%s%s or --%s%s)",
207 arg,
208 (ambiguous_flags & OPT_UNSET) ? "no-" : "",
209 ambiguous_option->long_name,
210 (abbrev_flags & OPT_UNSET) ? "no-" : "",
211 abbrev_option->long_name);
Johannes Schindelin7f275b92007-10-14 17:54:06 +0100212 if (abbrev_option)
213 return get_value(p, abbrev_option, abbrev_flags);
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200214 return -2;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200215}
216
Nanako Shiraishi1121a872008-07-16 19:42:18 +0900217static void check_typos(const char *arg, const struct option *options)
Pierre Habouzit3a9f0f42008-01-26 12:26:57 +0100218{
219 if (strlen(arg) < 3)
220 return;
221
222 if (!prefixcmp(arg, "no-")) {
223 error ("did you mean `--%s` (with two dashes ?)", arg);
224 exit(129);
225 }
226
227 for (; options->type != OPTION_END; options++) {
228 if (!options->long_name)
229 continue;
230 if (!prefixcmp(options->long_name, arg)) {
231 error ("did you mean `--%s` (with two dashes ?)", arg);
232 exit(129);
233 }
234 }
235}
236
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200237void parse_options_start(struct parse_opt_ctx_t *ctx,
238 int argc, const char **argv, int flags)
239{
240 memset(ctx, 0, sizeof(*ctx));
241 ctx->argc = argc - 1;
242 ctx->argv = argv + 1;
243 ctx->out = argv;
Pierre Habouzita32a4ea2008-06-24 00:31:31 +0200244 ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200245 ctx->flags = flags;
246}
247
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200248static int usage_with_options_internal(const char * const *,
249 const struct option *, int);
250
251int parse_options_step(struct parse_opt_ctx_t *ctx,
252 const struct option *options,
253 const char * const usagestr[])
254{
Pierre Habouzit26141b52008-06-23 22:55:11 +0200255 /* we must reset ->opt, unknown short option leave it dangling */
256 ctx->opt = NULL;
257
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200258 for (; ctx->argc; ctx->argc--, ctx->argv++) {
259 const char *arg = ctx->argv[0];
260
261 if (*arg != '-' || !arg[1]) {
262 if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
263 break;
264 ctx->out[ctx->cpidx++] = ctx->argv[0];
265 continue;
266 }
267
268 if (arg[1] != '-') {
269 ctx->opt = arg + 1;
270 if (*ctx->opt == 'h')
271 return parse_options_usage(usagestr, options);
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200272 switch (parse_short_opt(ctx, options)) {
273 case -1:
274 return parse_options_usage(usagestr, options);
275 case -2:
276 return PARSE_OPT_UNKNOWN;
277 }
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200278 if (ctx->opt)
279 check_typos(arg + 1, options);
280 while (ctx->opt) {
281 if (*ctx->opt == 'h')
282 return parse_options_usage(usagestr, options);
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200283 switch (parse_short_opt(ctx, options)) {
284 case -1:
285 return parse_options_usage(usagestr, options);
286 case -2:
Pierre Habouzit26141b52008-06-23 22:55:11 +0200287 /* fake a short option thing to hide the fact that we may have
288 * started to parse aggregated stuff
289 *
290 * This is leaky, too bad.
291 */
292 ctx->argv[0] = xstrdup(ctx->opt - 1);
293 *(char *)ctx->argv[0] = '-';
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200294 return PARSE_OPT_UNKNOWN;
295 }
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200296 }
297 continue;
298 }
299
300 if (!arg[2]) { /* "--" */
301 if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) {
302 ctx->argc--;
303 ctx->argv++;
304 }
305 break;
306 }
307
308 if (!strcmp(arg + 2, "help-all"))
309 return usage_with_options_internal(usagestr, options, 1);
310 if (!strcmp(arg + 2, "help"))
311 return parse_options_usage(usagestr, options);
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200312 switch (parse_long_opt(ctx, arg + 2, options)) {
313 case -1:
314 return parse_options_usage(usagestr, options);
315 case -2:
316 return PARSE_OPT_UNKNOWN;
317 }
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200318 }
319 return PARSE_OPT_DONE;
320}
321
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200322int parse_options_end(struct parse_opt_ctx_t *ctx)
323{
324 memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out));
325 ctx->out[ctx->cpidx + ctx->argc] = NULL;
326 return ctx->cpidx + ctx->argc;
327}
328
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200329int parse_options(int argc, const char **argv, const struct option *options,
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200330 const char * const usagestr[], int flags)
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200331{
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200332 struct parse_opt_ctx_t ctx;
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200333
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200334 parse_options_start(&ctx, argc, argv, flags);
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200335 switch (parse_options_step(&ctx, options, usagestr)) {
336 case PARSE_OPT_HELP:
337 exit(129);
338 case PARSE_OPT_DONE:
339 break;
340 default: /* PARSE_OPT_UNKNOWN */
Pierre Habouzit07fe54d2008-06-23 22:46:36 +0200341 if (ctx.argv[0][1] == '-') {
342 error("unknown option `%s'", ctx.argv[0] + 2);
343 } else {
344 error("unknown switch `%c'", *ctx.opt);
345 }
346 usage_with_options(usagestr, options);
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200347 }
348
Pierre Habouzit7e7bbcb2008-06-23 21:59:37 +0200349 return parse_options_end(&ctx);
Pierre Habouzit4a59fd12007-10-15 01:35:37 +0200350}
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200351
352#define USAGE_OPTS_WIDTH 24
353#define USAGE_GAP 2
354
Pierre Habouzitee68b872008-06-23 22:28:04 +0200355int usage_with_options_internal(const char * const *usagestr,
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200356 const struct option *opts, int full)
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200357{
Alex Riesenf389c802007-10-14 00:10:51 +0200358 fprintf(stderr, "usage: %s\n", *usagestr++);
359 while (*usagestr && **usagestr)
360 fprintf(stderr, " or: %s\n", *usagestr++);
Jeff King44d86e92008-06-14 03:27:21 -0400361 while (*usagestr) {
362 fprintf(stderr, "%s%s\n",
363 **usagestr ? " " : "",
364 *usagestr);
365 usagestr++;
366 }
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200367
368 if (opts->type != OPTION_GROUP)
Alex Riesenf389c802007-10-14 00:10:51 +0200369 fputc('\n', stderr);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200370
371 for (; opts->type != OPTION_END; opts++) {
372 size_t pos;
373 int pad;
374
375 if (opts->type == OPTION_GROUP) {
Alex Riesenf389c802007-10-14 00:10:51 +0200376 fputc('\n', stderr);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200377 if (*opts->help)
Alex Riesenf389c802007-10-14 00:10:51 +0200378 fprintf(stderr, "%s\n", opts->help);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200379 continue;
380 }
Pierre Habouzitdd3bf0f2007-11-19 10:21:44 +0100381 if (!full && (opts->flags & PARSE_OPT_HIDDEN))
382 continue;
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200383
Alex Riesenf389c802007-10-14 00:10:51 +0200384 pos = fprintf(stderr, " ");
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200385 if (opts->short_name)
Alex Riesenf389c802007-10-14 00:10:51 +0200386 pos += fprintf(stderr, "-%c", opts->short_name);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200387 if (opts->long_name && opts->short_name)
Alex Riesenf389c802007-10-14 00:10:51 +0200388 pos += fprintf(stderr, ", ");
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200389 if (opts->long_name)
Alex Riesenf389c802007-10-14 00:10:51 +0200390 pos += fprintf(stderr, "--%s", opts->long_name);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200391
392 switch (opts->type) {
Pierre Habouzit580d5bf2008-03-02 11:35:56 +0100393 case OPTION_ARGUMENT:
394 break;
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200395 case OPTION_INTEGER:
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200396 if (opts->flags & PARSE_OPT_OPTARG)
Michele Ballabio6422f632008-06-22 16:39:04 +0200397 if (opts->long_name)
398 pos += fprintf(stderr, "[=<n>]");
399 else
400 pos += fprintf(stderr, "[<n>]");
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200401 else
402 pos += fprintf(stderr, " <n>");
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200403 break;
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200404 case OPTION_CALLBACK:
Pierre Habouzitf481e222007-10-16 00:32:38 +0200405 if (opts->flags & PARSE_OPT_NOARG)
406 break;
407 /* FALLTHROUGH */
408 case OPTION_STRING:
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200409 if (opts->argh) {
410 if (opts->flags & PARSE_OPT_OPTARG)
Michele Ballabio6422f632008-06-22 16:39:04 +0200411 if (opts->long_name)
412 pos += fprintf(stderr, "[=<%s>]", opts->argh);
413 else
414 pos += fprintf(stderr, "[<%s>]", opts->argh);
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200415 else
416 pos += fprintf(stderr, " <%s>", opts->argh);
417 } else {
418 if (opts->flags & PARSE_OPT_OPTARG)
Michele Ballabio6422f632008-06-22 16:39:04 +0200419 if (opts->long_name)
420 pos += fprintf(stderr, "[=...]");
421 else
422 pos += fprintf(stderr, "[...]");
Pierre Habouzitffe659f2007-10-15 01:45:45 +0200423 else
424 pos += fprintf(stderr, " ...");
425 }
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200426 break;
Pierre Habouzitdb7244b2007-11-07 11:20:27 +0100427 default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200428 break;
429 }
430
Alex Riesenf389c802007-10-14 00:10:51 +0200431 if (pos <= USAGE_OPTS_WIDTH)
432 pad = USAGE_OPTS_WIDTH - pos;
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200433 else {
Alex Riesenf389c802007-10-14 00:10:51 +0200434 fputc('\n', stderr);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200435 pad = USAGE_OPTS_WIDTH;
436 }
Alex Riesenf389c802007-10-14 00:10:51 +0200437 fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200438 }
Alex Riesenf389c802007-10-14 00:10:51 +0200439 fputc('\n', stderr);
440
Pierre Habouzitee68b872008-06-23 22:28:04 +0200441 return PARSE_OPT_HELP;
Pierre Habouzitd7a38c52007-10-15 01:38:30 +0200442}
Pierre Habouzit0ce865b2007-10-14 11:05:12 +0200443
Pierre Habouzitdd3bf0f2007-11-19 10:21:44 +0100444void usage_with_options(const char * const *usagestr,
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200445 const struct option *opts)
Pierre Habouzitdd3bf0f2007-11-19 10:21:44 +0100446{
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200447 usage_with_options_internal(usagestr, opts, 0);
448 exit(129);
Pierre Habouzitdd3bf0f2007-11-19 10:21:44 +0100449}
450
Pierre Habouzitee68b872008-06-23 22:28:04 +0200451int parse_options_usage(const char * const *usagestr,
452 const struct option *opts)
453{
Pierre Habouzitff43ec32008-06-23 22:38:58 +0200454 return usage_with_options_internal(usagestr, opts, 0);
Pierre Habouzitee68b872008-06-23 22:28:04 +0200455}
456
457
Pierre Habouzit0ce865b2007-10-14 11:05:12 +0200458/*----- some often used options -----*/
459#include "cache.h"
Pierre Habouzitdb7244b2007-11-07 11:20:27 +0100460
Pierre Habouzit0ce865b2007-10-14 11:05:12 +0200461int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
462{
463 int v;
464
465 if (!arg) {
466 v = unset ? 0 : DEFAULT_ABBREV;
467 } else {
468 v = strtol(arg, (char **)&arg, 10);
469 if (*arg)
470 return opterror(opt, "expects a numerical value", 0);
471 if (v && v < MINIMUM_ABBREV)
472 v = MINIMUM_ABBREV;
473 else if (v > 40)
474 v = 40;
475 }
476 *(int *)(opt->value) = v;
477 return 0;
478}
Michele Ballabio1f4a7112008-03-24 15:02:21 +0100479
480int parse_opt_approxidate_cb(const struct option *opt, const char *arg,
481 int unset)
482{
483 *(unsigned long *)(opt->value) = approxidate(arg);
484 return 0;
485}
Junio C Hamanodbd0f5c2008-08-06 11:43:47 -0700486
487/*
488 * This should really be OPTION_FILENAME type as a part of
489 * parse_options that take prefix to do this while parsing.
490 */
491extern const char *parse_options_fix_filename(const char *prefix, const char *file)
492{
493 if (!file || !prefix || is_absolute_path(file) || !strcmp("-", file))
494 return file;
495 return prefix_filename(prefix, strlen(prefix), file);
496}
497