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Commit | Line | Data |
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4a59fd13 PH |
1 | #include "git-compat-util.h" |
2 | #include "parse-options.h" | |
26141b5b | 3 | #include "cache.h" |
b2141fc1 | 4 | #include "config.h" |
269defdf | 5 | #include "commit.h" |
73e9da01 | 6 | #include "color.h" |
c0821965 | 7 | #include "utf8.h" |
4a59fd13 | 8 | |
b02e7d5d JS |
9 | static int disallow_abbreviated_options; |
10 | ||
4a59fd13 PH |
11 | #define OPT_SHORT 1 |
12 | #define OPT_UNSET 2 | |
13 | ||
1f275b7c | 14 | int optbug(const struct option *opt, const char *reason) |
1e5ce570 | 15 | { |
af465af8 JH |
16 | if (opt->long_name) { |
17 | if (opt->short_name) | |
18 | return error("BUG: switch '%c' (--%s) %s", | |
19 | opt->short_name, opt->long_name, reason); | |
1e5ce570 | 20 | return error("BUG: option '%s' %s", opt->long_name, reason); |
af465af8 | 21 | } |
1e5ce570 JN |
22 | return error("BUG: switch '%c' %s", opt->short_name, reason); |
23 | } | |
24 | ||
f41179f1 NTND |
25 | static enum parse_opt_result get_arg(struct parse_opt_ctx_t *p, |
26 | const struct option *opt, | |
27 | int flags, const char **arg) | |
1cc6985c PH |
28 | { |
29 | if (p->opt) { | |
30 | *arg = p->opt; | |
31 | p->opt = NULL; | |
32 | } else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) { | |
33 | *arg = (const char *)opt->defval; | |
d5d745f9 | 34 | } else if (p->argc > 1) { |
1cc6985c PH |
35 | p->argc--; |
36 | *arg = *++p->argv; | |
37 | } else | |
9440b831 | 38 | return error(_("%s requires a value"), optname(opt, flags)); |
1cc6985c PH |
39 | return 0; |
40 | } | |
41 | ||
df217ed6 SB |
42 | static void fix_filename(const char *prefix, const char **file) |
43 | { | |
44 | if (!file || !*file || !prefix || is_absolute_path(*file) | |
45 | || !strcmp("-", *file)) | |
46 | return; | |
e4da43b1 | 47 | *file = prefix_filename(prefix, *file); |
df217ed6 SB |
48 | } |
49 | ||
f41179f1 NTND |
50 | static enum parse_opt_result opt_command_mode_error( |
51 | const struct option *opt, | |
52 | const struct option *all_opts, | |
53 | int flags) | |
11588263 JH |
54 | { |
55 | const struct option *that; | |
11588263 JH |
56 | struct strbuf that_name = STRBUF_INIT; |
57 | ||
58 | /* | |
59 | * Find the other option that was used to set the variable | |
60 | * already, and report that this is not compatible with it. | |
61 | */ | |
62 | for (that = all_opts; that->type != OPTION_END; that++) { | |
63 | if (that == opt || | |
64 | that->type != OPTION_CMDMODE || | |
65 | that->value != opt->value || | |
66 | that->defval != *(int *)opt->value) | |
67 | continue; | |
68 | ||
69 | if (that->long_name) | |
70 | strbuf_addf(&that_name, "--%s", that->long_name); | |
71 | else | |
72 | strbuf_addf(&that_name, "-%c", that->short_name); | |
9440b831 NTND |
73 | error(_("%s is incompatible with %s"), |
74 | optname(opt, flags), that_name.buf); | |
11588263 | 75 | strbuf_release(&that_name); |
f41179f1 | 76 | return PARSE_OPT_ERROR; |
11588263 | 77 | } |
9440b831 NTND |
78 | return error(_("%s : incompatible with something else"), |
79 | optname(opt, flags)); | |
11588263 JH |
80 | } |
81 | ||
f41179f1 NTND |
82 | static enum parse_opt_result get_value(struct parse_opt_ctx_t *p, |
83 | const struct option *opt, | |
84 | const struct option *all_opts, | |
85 | int flags) | |
4a59fd13 | 86 | { |
ffe659f9 | 87 | const char *s, *arg; |
db7244bd | 88 | const int unset = flags & OPT_UNSET; |
df217ed6 | 89 | int err; |
4a59fd13 | 90 | |
db7244bd | 91 | if (unset && p->opt) |
9440b831 | 92 | return error(_("%s takes no value"), optname(opt, flags)); |
db7244bd | 93 | if (unset && (opt->flags & PARSE_OPT_NONEG)) |
9440b831 | 94 | return error(_("%s isn't available"), optname(opt, flags)); |
c1f4ec9e | 95 | if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG)) |
9440b831 | 96 | return error(_("%s takes no value"), optname(opt, flags)); |
db7244bd | 97 | |
db7244bd | 98 | switch (opt->type) { |
b0b3a8b6 | 99 | case OPTION_LOWLEVEL_CALLBACK: |
3ebbe289 | 100 | return opt->ll_callback(p, opt, NULL, unset); |
b0b3a8b6 | 101 | |
db7244bd PH |
102 | case OPTION_BIT: |
103 | if (unset) | |
104 | *(int *)opt->value &= ~opt->defval; | |
4a59fd13 | 105 | else |
db7244bd PH |
106 | *(int *)opt->value |= opt->defval; |
107 | return 0; | |
108 | ||
2f4b97f9 RS |
109 | case OPTION_NEGBIT: |
110 | if (unset) | |
111 | *(int *)opt->value |= opt->defval; | |
112 | else | |
113 | *(int *)opt->value &= ~opt->defval; | |
114 | return 0; | |
115 | ||
f62470c6 NTND |
116 | case OPTION_BITOP: |
117 | if (unset) | |
118 | BUG("BITOP can't have unset form"); | |
119 | *(int *)opt->value &= ~opt->extra; | |
120 | *(int *)opt->value |= opt->defval; | |
121 | return 0; | |
122 | ||
b04ba2bb | 123 | case OPTION_COUNTUP: |
e0070e8b PB |
124 | if (*(int *)opt->value < 0) |
125 | *(int *)opt->value = 0; | |
db7244bd PH |
126 | *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; |
127 | return 0; | |
128 | ||
129 | case OPTION_SET_INT: | |
130 | *(int *)opt->value = unset ? 0 : opt->defval; | |
131 | return 0; | |
132 | ||
11588263 JH |
133 | case OPTION_CMDMODE: |
134 | /* | |
135 | * Giving the same mode option twice, although is unnecessary, | |
136 | * is not a grave error, so let it pass. | |
137 | */ | |
138 | if (*(int *)opt->value && *(int *)opt->value != opt->defval) | |
139 | return opt_command_mode_error(opt, all_opts, flags); | |
140 | *(int *)opt->value = opt->defval; | |
141 | return 0; | |
142 | ||
4a59fd13 | 143 | case OPTION_STRING: |
1cc6985c | 144 | if (unset) |
db7244bd | 145 | *(const char **)opt->value = NULL; |
1cc6985c | 146 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) |
ffe659f9 | 147 | *(const char **)opt->value = (const char *)opt->defval; |
1cc6985c PH |
148 | else |
149 | return get_arg(p, opt, flags, (const char **)opt->value); | |
4a59fd13 PH |
150 | return 0; |
151 | ||
df217ed6 SB |
152 | case OPTION_FILENAME: |
153 | err = 0; | |
154 | if (unset) | |
155 | *(const char **)opt->value = NULL; | |
156 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
157 | *(const char **)opt->value = (const char *)opt->defval; | |
158 | else | |
159 | err = get_arg(p, opt, flags, (const char **)opt->value); | |
160 | ||
161 | if (!err) | |
162 | fix_filename(p->prefix, (const char **)opt->value); | |
163 | return err; | |
164 | ||
ffe659f9 | 165 | case OPTION_CALLBACK: |
3ebbe289 NTND |
166 | { |
167 | const char *p_arg = NULL; | |
168 | int p_unset; | |
169 | ||
db7244bd | 170 | if (unset) |
3ebbe289 NTND |
171 | p_unset = 1; |
172 | else if (opt->flags & PARSE_OPT_NOARG) | |
173 | p_unset = 0; | |
174 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
175 | p_unset = 0; | |
176 | else if (get_arg(p, opt, flags, &arg)) | |
1cc6985c | 177 | return -1; |
3ebbe289 NTND |
178 | else { |
179 | p_unset = 0; | |
180 | p_arg = arg; | |
181 | } | |
182 | if (opt->callback) | |
183 | return (*opt->callback)(opt, p_arg, p_unset) ? (-1) : 0; | |
184 | else | |
185 | return (*opt->ll_callback)(p, opt, p_arg, p_unset); | |
186 | } | |
4a59fd13 | 187 | case OPTION_INTEGER: |
db7244bd | 188 | if (unset) { |
4a59fd13 PH |
189 | *(int *)opt->value = 0; |
190 | return 0; | |
191 | } | |
c43a2483 | 192 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { |
ffe659f9 PH |
193 | *(int *)opt->value = opt->defval; |
194 | return 0; | |
195 | } | |
1cc6985c PH |
196 | if (get_arg(p, opt, flags, &arg)) |
197 | return -1; | |
f7e68a08 NTND |
198 | if (!*arg) |
199 | return error(_("%s expects a numerical value"), | |
200 | optname(opt, flags)); | |
1cc6985c | 201 | *(int *)opt->value = strtol(arg, (char **)&s, 10); |
4a59fd13 | 202 | if (*s) |
9440b831 NTND |
203 | return error(_("%s expects a numerical value"), |
204 | optname(opt, flags)); | |
4a59fd13 PH |
205 | return 0; |
206 | ||
2a514ed8 CB |
207 | case OPTION_MAGNITUDE: |
208 | if (unset) { | |
209 | *(unsigned long *)opt->value = 0; | |
210 | return 0; | |
211 | } | |
212 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
213 | *(unsigned long *)opt->value = opt->defval; | |
214 | return 0; | |
215 | } | |
216 | if (get_arg(p, opt, flags, &arg)) | |
217 | return -1; | |
218 | if (!git_parse_ulong(arg, opt->value)) | |
9440b831 NTND |
219 | return error(_("%s expects a non-negative integer value" |
220 | " with an optional k/m/g suffix"), | |
221 | optname(opt, flags)); | |
2a514ed8 CB |
222 | return 0; |
223 | ||
4a59fd13 | 224 | default: |
48a5499e | 225 | BUG("opt->type %d should not happen", opt->type); |
4a59fd13 PH |
226 | } |
227 | } | |
228 | ||
f41179f1 NTND |
229 | static enum parse_opt_result parse_short_opt(struct parse_opt_ctx_t *p, |
230 | const struct option *options) | |
4a59fd13 | 231 | { |
11588263 | 232 | const struct option *all_opts = options; |
e0319ff5 RS |
233 | const struct option *numopt = NULL; |
234 | ||
4a59fd13 PH |
235 | for (; options->type != OPTION_END; options++) { |
236 | if (options->short_name == *p->opt) { | |
237 | p->opt = p->opt[1] ? p->opt + 1 : NULL; | |
11588263 | 238 | return get_value(p, options, all_opts, OPT_SHORT); |
4a59fd13 | 239 | } |
e0319ff5 RS |
240 | |
241 | /* | |
242 | * Handle the numerical option later, explicit one-digit | |
243 | * options take precedence over it. | |
244 | */ | |
245 | if (options->type == OPTION_NUMBER) | |
246 | numopt = options; | |
247 | } | |
248 | if (numopt && isdigit(*p->opt)) { | |
249 | size_t len = 1; | |
250 | char *arg; | |
251 | int rc; | |
252 | ||
253 | while (isdigit(p->opt[len])) | |
254 | len++; | |
255 | arg = xmemdupz(p->opt, len); | |
256 | p->opt = p->opt[len] ? p->opt + len : NULL; | |
3ebbe289 NTND |
257 | if (numopt->callback) |
258 | rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0; | |
259 | else | |
260 | rc = (*numopt->ll_callback)(p, numopt, arg, 0); | |
e0319ff5 RS |
261 | free(arg); |
262 | return rc; | |
4a59fd13 | 263 | } |
f41179f1 | 264 | return PARSE_OPT_UNKNOWN; |
4a59fd13 PH |
265 | } |
266 | ||
5c387428 NTND |
267 | static int has_string(const char *it, const char **array) |
268 | { | |
269 | while (*array) | |
270 | if (!strcmp(it, *(array++))) | |
271 | return 1; | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int is_alias(struct parse_opt_ctx_t *ctx, | |
276 | const struct option *one_opt, | |
277 | const struct option *another_opt) | |
278 | { | |
279 | const char **group; | |
280 | ||
281 | if (!ctx->alias_groups) | |
282 | return 0; | |
283 | ||
284 | if (!one_opt->long_name || !another_opt->long_name) | |
285 | return 0; | |
286 | ||
287 | for (group = ctx->alias_groups; *group; group += 3) { | |
288 | /* it and other are from the same family? */ | |
289 | if (has_string(one_opt->long_name, group) && | |
290 | has_string(another_opt->long_name, group)) | |
291 | return 1; | |
292 | } | |
293 | return 0; | |
294 | } | |
295 | ||
f41179f1 NTND |
296 | static enum parse_opt_result parse_long_opt( |
297 | struct parse_opt_ctx_t *p, const char *arg, | |
298 | const struct option *options) | |
4a59fd13 | 299 | { |
11588263 | 300 | const struct option *all_opts = options; |
2c5495f7 | 301 | const char *arg_end = strchrnul(arg, '='); |
243e0614 JS |
302 | const struct option *abbrev_option = NULL, *ambiguous_option = NULL; |
303 | int abbrev_flags = 0, ambiguous_flags = 0; | |
7f275b91 | 304 | |
4a59fd13 | 305 | for (; options->type != OPTION_END; options++) { |
0f1930c5 RS |
306 | const char *rest, *long_name = options->long_name; |
307 | int flags = 0, opt_flags = 0; | |
4a59fd13 | 308 | |
0f1930c5 | 309 | if (!long_name) |
4a59fd13 PH |
310 | continue; |
311 | ||
0f1930c5 | 312 | again: |
cf4fff57 JK |
313 | if (!skip_prefix(arg, long_name, &rest)) |
314 | rest = NULL; | |
580d5bff PH |
315 | if (options->type == OPTION_ARGUMENT) { |
316 | if (!rest) | |
317 | continue; | |
318 | if (*rest == '=') | |
9440b831 NTND |
319 | return error(_("%s takes no value"), |
320 | optname(options, flags)); | |
580d5bff PH |
321 | if (*rest) |
322 | continue; | |
1a85b49b JS |
323 | if (options->value) |
324 | *(int *)options->value = options->defval; | |
580d5bff | 325 | p->out[p->cpidx++] = arg - 2; |
f41179f1 | 326 | return PARSE_OPT_DONE; |
580d5bff | 327 | } |
4a59fd13 | 328 | if (!rest) { |
7f275b91 | 329 | /* abbreviated? */ |
baa4adc6 NTND |
330 | if (!(p->flags & PARSE_OPT_KEEP_UNKNOWN) && |
331 | !strncmp(long_name, arg, arg_end - arg)) { | |
7f275b91 | 332 | is_abbreviated: |
5c387428 NTND |
333 | if (abbrev_option && |
334 | !is_alias(p, abbrev_option, options)) { | |
243e0614 JS |
335 | /* |
336 | * If this is abbreviated, it is | |
337 | * ambiguous. So when there is no | |
338 | * exact match later, we need to | |
339 | * error out. | |
340 | */ | |
341 | ambiguous_option = abbrev_option; | |
342 | ambiguous_flags = abbrev_flags; | |
343 | } | |
7f275b91 JS |
344 | if (!(flags & OPT_UNSET) && *arg_end) |
345 | p->opt = arg_end + 1; | |
346 | abbrev_option = options; | |
0f1930c5 | 347 | abbrev_flags = flags ^ opt_flags; |
7f275b91 JS |
348 | continue; |
349 | } | |
6bbfd1fa AS |
350 | /* negation allowed? */ |
351 | if (options->flags & PARSE_OPT_NONEG) | |
352 | continue; | |
7f275b91 | 353 | /* negated and abbreviated very much? */ |
59556548 | 354 | if (starts_with("no-", arg)) { |
7f275b91 JS |
355 | flags |= OPT_UNSET; |
356 | goto is_abbreviated; | |
357 | } | |
358 | /* negated? */ | |
59556548 CC |
359 | if (!starts_with(arg, "no-")) { |
360 | if (starts_with(long_name, "no-")) { | |
0f1930c5 RS |
361 | long_name += 3; |
362 | opt_flags |= OPT_UNSET; | |
363 | goto again; | |
364 | } | |
4a59fd13 | 365 | continue; |
0f1930c5 | 366 | } |
4a59fd13 | 367 | flags |= OPT_UNSET; |
cf4fff57 JK |
368 | if (!skip_prefix(arg + 3, long_name, &rest)) { |
369 | /* abbreviated and negated? */ | |
370 | if (starts_with(long_name, arg + 3)) | |
371 | goto is_abbreviated; | |
372 | else | |
373 | continue; | |
374 | } | |
4a59fd13 PH |
375 | } |
376 | if (*rest) { | |
377 | if (*rest != '=') | |
378 | continue; | |
379 | p->opt = rest + 1; | |
380 | } | |
11588263 | 381 | return get_value(p, options, all_opts, flags ^ opt_flags); |
4a59fd13 | 382 | } |
243e0614 | 383 | |
b02e7d5d JS |
384 | if (disallow_abbreviated_options && (ambiguous_option || abbrev_option)) |
385 | die("disallowed abbreviated or ambiguous option '%.*s'", | |
386 | (int)(arg_end - arg), arg); | |
387 | ||
3bb0923f | 388 | if (ambiguous_option) { |
89003426 NTND |
389 | error(_("ambiguous option: %s " |
390 | "(could be --%s%s or --%s%s)"), | |
243e0614 JS |
391 | arg, |
392 | (ambiguous_flags & OPT_UNSET) ? "no-" : "", | |
393 | ambiguous_option->long_name, | |
394 | (abbrev_flags & OPT_UNSET) ? "no-" : "", | |
395 | abbrev_option->long_name); | |
f41179f1 | 396 | return PARSE_OPT_HELP; |
3bb0923f | 397 | } |
7f275b91 | 398 | if (abbrev_option) |
11588263 | 399 | return get_value(p, abbrev_option, all_opts, abbrev_flags); |
f41179f1 | 400 | return PARSE_OPT_UNKNOWN; |
4a59fd13 PH |
401 | } |
402 | ||
51a9949e RS |
403 | static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg, |
404 | const struct option *options) | |
405 | { | |
11588263 JH |
406 | const struct option *all_opts = options; |
407 | ||
51a9949e RS |
408 | for (; options->type != OPTION_END; options++) { |
409 | if (!(options->flags & PARSE_OPT_NODASH)) | |
410 | continue; | |
51a9949e | 411 | if (options->short_name == arg[0] && arg[1] == '\0') |
11588263 | 412 | return get_value(p, options, all_opts, OPT_SHORT); |
51a9949e RS |
413 | } |
414 | return -2; | |
415 | } | |
416 | ||
1121a878 | 417 | static void check_typos(const char *arg, const struct option *options) |
3a9f0f41 PH |
418 | { |
419 | if (strlen(arg) < 3) | |
420 | return; | |
421 | ||
59556548 | 422 | if (starts_with(arg, "no-")) { |
89003426 | 423 | error(_("did you mean `--%s` (with two dashes ?)"), arg); |
3a9f0f41 PH |
424 | exit(129); |
425 | } | |
426 | ||
427 | for (; options->type != OPTION_END; options++) { | |
428 | if (!options->long_name) | |
429 | continue; | |
59556548 | 430 | if (starts_with(options->long_name, arg)) { |
89003426 | 431 | error(_("did you mean `--%s` (with two dashes ?)"), arg); |
3a9f0f41 PH |
432 | exit(129); |
433 | } | |
434 | } | |
435 | } | |
436 | ||
cb9d398c PH |
437 | static void parse_options_check(const struct option *opts) |
438 | { | |
439 | int err = 0; | |
af465af8 | 440 | char short_opts[128]; |
cb9d398c | 441 | |
af465af8 | 442 | memset(short_opts, '\0', sizeof(short_opts)); |
cb9d398c PH |
443 | for (; opts->type != OPTION_END; opts++) { |
444 | if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) && | |
1e5ce570 JN |
445 | (opts->flags & PARSE_OPT_OPTARG)) |
446 | err |= optbug(opts, "uses incompatible flags " | |
447 | "LASTARG_DEFAULT and OPTARG"); | |
af465af8 JH |
448 | if (opts->short_name) { |
449 | if (0x7F <= opts->short_name) | |
450 | err |= optbug(opts, "invalid short name"); | |
451 | else if (short_opts[opts->short_name]++) | |
452 | err |= optbug(opts, "short name already used"); | |
453 | } | |
a02dd4ff JN |
454 | if (opts->flags & PARSE_OPT_NODASH && |
455 | ((opts->flags & PARSE_OPT_OPTARG) || | |
456 | !(opts->flags & PARSE_OPT_NOARG) || | |
457 | !(opts->flags & PARSE_OPT_NONEG) || | |
458 | opts->long_name)) | |
459 | err |= optbug(opts, "uses feature " | |
460 | "not supported for dashless options"); | |
5c400ed2 | 461 | switch (opts->type) { |
b04ba2bb | 462 | case OPTION_COUNTUP: |
5c400ed2 JN |
463 | case OPTION_BIT: |
464 | case OPTION_NEGBIT: | |
465 | case OPTION_SET_INT: | |
5c400ed2 JN |
466 | case OPTION_NUMBER: |
467 | if ((opts->flags & PARSE_OPT_OPTARG) || | |
468 | !(opts->flags & PARSE_OPT_NOARG)) | |
469 | err |= optbug(opts, "should not accept an argument"); | |
bf3ff338 NTND |
470 | break; |
471 | case OPTION_CALLBACK: | |
3ebbe289 NTND |
472 | if (!opts->callback && !opts->ll_callback) |
473 | BUG("OPTION_CALLBACK needs one callback"); | |
474 | if (opts->callback && opts->ll_callback) | |
475 | BUG("OPTION_CALLBACK can't have two callbacks"); | |
bf3ff338 NTND |
476 | break; |
477 | case OPTION_LOWLEVEL_CALLBACK: | |
478 | if (!opts->ll_callback) | |
479 | BUG("OPTION_LOWLEVEL_CALLBACK needs a callback"); | |
480 | if (opts->callback) | |
481 | BUG("OPTION_LOWLEVEL_CALLBACK needs no high level callback"); | |
482 | break; | |
5c387428 NTND |
483 | case OPTION_ALIAS: |
484 | BUG("OPT_ALIAS() should not remain at this point. " | |
485 | "Are you using parse_options_step() directly?\n" | |
486 | "That case is not supported yet."); | |
5c400ed2 JN |
487 | default: |
488 | ; /* ok. (usually accepts an argument) */ | |
489 | } | |
b6c2a0d4 JH |
490 | if (opts->argh && |
491 | strcspn(opts->argh, " _") != strlen(opts->argh)) | |
492 | err |= optbug(opts, "multi-word argh should use dash to separate words"); | |
cb9d398c | 493 | } |
cb9d398c | 494 | if (err) |
1e5ce570 | 495 | exit(128); |
cb9d398c PH |
496 | } |
497 | ||
5c387428 NTND |
498 | static void parse_options_start_1(struct parse_opt_ctx_t *ctx, |
499 | int argc, const char **argv, const char *prefix, | |
500 | const struct option *options, int flags) | |
7e7bbcb4 | 501 | { |
202fbb33 NTND |
502 | ctx->argc = argc; |
503 | ctx->argv = argv; | |
504 | if (!(flags & PARSE_OPT_ONE_SHOT)) { | |
505 | ctx->argc--; | |
506 | ctx->argv++; | |
507 | } | |
508 | ctx->total = ctx->argc; | |
509 | ctx->out = argv; | |
37782920 | 510 | ctx->prefix = prefix; |
a32a4eaa | 511 | ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0); |
7e7bbcb4 | 512 | ctx->flags = flags; |
0d260f9a | 513 | if ((flags & PARSE_OPT_KEEP_UNKNOWN) && |
202fbb33 NTND |
514 | (flags & PARSE_OPT_STOP_AT_NON_OPTION) && |
515 | !(flags & PARSE_OPT_ONE_SHOT)) | |
48a5499e | 516 | BUG("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); |
202fbb33 NTND |
517 | if ((flags & PARSE_OPT_ONE_SHOT) && |
518 | (flags & PARSE_OPT_KEEP_ARGV0)) | |
519 | BUG("Can't keep argv0 if you don't have it"); | |
9ca1169f | 520 | parse_options_check(options); |
7e7bbcb4 PH |
521 | } |
522 | ||
5c387428 NTND |
523 | void parse_options_start(struct parse_opt_ctx_t *ctx, |
524 | int argc, const char **argv, const char *prefix, | |
525 | const struct option *options, int flags) | |
526 | { | |
527 | memset(ctx, 0, sizeof(*ctx)); | |
528 | parse_options_start_1(ctx, argc, argv, prefix, options, flags); | |
529 | } | |
530 | ||
b221b5ab NTND |
531 | static void show_negated_gitcomp(const struct option *opts, int nr_noopts) |
532 | { | |
533 | int printed_dashdash = 0; | |
534 | ||
535 | for (; opts->type != OPTION_END; opts++) { | |
536 | int has_unset_form = 0; | |
537 | const char *name; | |
538 | ||
539 | if (!opts->long_name) | |
540 | continue; | |
541 | if (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)) | |
542 | continue; | |
543 | if (opts->flags & PARSE_OPT_NONEG) | |
544 | continue; | |
545 | ||
546 | switch (opts->type) { | |
547 | case OPTION_STRING: | |
548 | case OPTION_FILENAME: | |
549 | case OPTION_INTEGER: | |
550 | case OPTION_MAGNITUDE: | |
551 | case OPTION_CALLBACK: | |
552 | case OPTION_BIT: | |
553 | case OPTION_NEGBIT: | |
554 | case OPTION_COUNTUP: | |
555 | case OPTION_SET_INT: | |
556 | has_unset_form = 1; | |
557 | break; | |
558 | default: | |
559 | break; | |
560 | } | |
561 | if (!has_unset_form) | |
562 | continue; | |
563 | ||
564 | if (skip_prefix(opts->long_name, "no-", &name)) { | |
565 | if (nr_noopts < 0) | |
566 | printf(" --%s", name); | |
567 | } else if (nr_noopts >= 0) { | |
568 | if (nr_noopts && !printed_dashdash) { | |
569 | printf(" --"); | |
570 | printed_dashdash = 1; | |
571 | } | |
572 | printf(" --no-%s", opts->long_name); | |
573 | nr_noopts++; | |
574 | } | |
575 | } | |
576 | } | |
577 | ||
5205749d | 578 | static int show_gitcomp(const struct option *opts) |
b9d7f4b4 | 579 | { |
b221b5ab NTND |
580 | const struct option *original_opts = opts; |
581 | int nr_noopts = 0; | |
582 | ||
b9d7f4b4 NTND |
583 | for (; opts->type != OPTION_END; opts++) { |
584 | const char *suffix = ""; | |
585 | ||
586 | if (!opts->long_name) | |
587 | continue; | |
588 | if (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)) | |
589 | continue; | |
590 | ||
591 | switch (opts->type) { | |
592 | case OPTION_GROUP: | |
593 | continue; | |
594 | case OPTION_STRING: | |
595 | case OPTION_FILENAME: | |
596 | case OPTION_INTEGER: | |
597 | case OPTION_MAGNITUDE: | |
598 | case OPTION_CALLBACK: | |
599 | if (opts->flags & PARSE_OPT_NOARG) | |
600 | break; | |
601 | if (opts->flags & PARSE_OPT_OPTARG) | |
602 | break; | |
603 | if (opts->flags & PARSE_OPT_LASTARG_DEFAULT) | |
604 | break; | |
605 | suffix = "="; | |
606 | break; | |
607 | default: | |
608 | break; | |
609 | } | |
ebc4a04e NTND |
610 | if (opts->flags & PARSE_OPT_COMP_ARG) |
611 | suffix = "="; | |
b221b5ab NTND |
612 | if (starts_with(opts->long_name, "no-")) |
613 | nr_noopts++; | |
b9d7f4b4 NTND |
614 | printf(" --%s%s", opts->long_name, suffix); |
615 | } | |
b221b5ab NTND |
616 | show_negated_gitcomp(original_opts, -1); |
617 | show_negated_gitcomp(original_opts, nr_noopts); | |
b9d7f4b4 | 618 | fputc('\n', stdout); |
a92ec7ef | 619 | return PARSE_OPT_COMPLETE; |
b9d7f4b4 NTND |
620 | } |
621 | ||
5c387428 NTND |
622 | /* |
623 | * Scan and may produce a new option[] array, which should be used | |
624 | * instead of the original 'options'. | |
625 | * | |
626 | * Right now this is only used to preprocess and substitue | |
627 | * OPTION_ALIAS. | |
628 | */ | |
629 | static struct option *preprocess_options(struct parse_opt_ctx_t *ctx, | |
630 | const struct option *options) | |
631 | { | |
632 | struct option *newopt; | |
633 | int i, nr, alias; | |
634 | int nr_aliases = 0; | |
635 | ||
636 | for (nr = 0; options[nr].type != OPTION_END; nr++) { | |
637 | if (options[nr].type == OPTION_ALIAS) | |
638 | nr_aliases++; | |
639 | } | |
640 | ||
641 | if (!nr_aliases) | |
642 | return NULL; | |
643 | ||
644 | ALLOC_ARRAY(newopt, nr + 1); | |
645 | COPY_ARRAY(newopt, options, nr + 1); | |
646 | ||
647 | /* each alias has two string pointers and NULL */ | |
648 | CALLOC_ARRAY(ctx->alias_groups, 3 * (nr_aliases + 1)); | |
649 | ||
650 | for (alias = 0, i = 0; i < nr; i++) { | |
651 | int short_name; | |
652 | const char *long_name; | |
653 | const char *source; | |
654 | int j; | |
655 | ||
656 | if (newopt[i].type != OPTION_ALIAS) | |
657 | continue; | |
658 | ||
659 | short_name = newopt[i].short_name; | |
660 | long_name = newopt[i].long_name; | |
661 | source = newopt[i].value; | |
662 | ||
663 | if (!long_name) | |
664 | BUG("An alias must have long option name"); | |
665 | ||
666 | for (j = 0; j < nr; j++) { | |
667 | const char *name = options[j].long_name; | |
668 | ||
669 | if (!name || strcmp(name, source)) | |
670 | continue; | |
671 | ||
672 | if (options[j].type == OPTION_ALIAS) | |
673 | BUG("No please. Nested aliases are not supported."); | |
674 | ||
675 | /* | |
676 | * NEEDSWORK: this is a bit inconsistent because | |
677 | * usage_with_options() on the original options[] will print | |
678 | * help string as "alias of %s" but "git cmd -h" will | |
679 | * print the original help string. | |
680 | */ | |
681 | memcpy(newopt + i, options + j, sizeof(*newopt)); | |
682 | newopt[i].short_name = short_name; | |
683 | newopt[i].long_name = long_name; | |
684 | break; | |
685 | } | |
686 | ||
687 | if (j == nr) | |
688 | BUG("could not find source option '%s' of alias '%s'", | |
689 | source, newopt[i].long_name); | |
690 | ctx->alias_groups[alias * 3 + 0] = newopt[i].long_name; | |
691 | ctx->alias_groups[alias * 3 + 1] = options[j].long_name; | |
692 | ctx->alias_groups[alias * 3 + 2] = NULL; | |
693 | alias++; | |
694 | } | |
695 | ||
696 | return newopt; | |
697 | } | |
698 | ||
47e9cd28 TR |
699 | static int usage_with_options_internal(struct parse_opt_ctx_t *, |
700 | const char * const *, | |
9c7304e3 | 701 | const struct option *, int, int); |
dd3bf0f4 | 702 | |
ff43ec3e PH |
703 | int parse_options_step(struct parse_opt_ctx_t *ctx, |
704 | const struct option *options, | |
705 | const char * const usagestr[]) | |
4a59fd13 | 706 | { |
b92891f9 RS |
707 | int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); |
708 | ||
26141b5b PH |
709 | /* we must reset ->opt, unknown short option leave it dangling */ |
710 | ctx->opt = NULL; | |
711 | ||
ff43ec3e PH |
712 | for (; ctx->argc; ctx->argc--, ctx->argv++) { |
713 | const char *arg = ctx->argv[0]; | |
4a59fd13 | 714 | |
202fbb33 NTND |
715 | if (ctx->flags & PARSE_OPT_ONE_SHOT && |
716 | ctx->argc != ctx->total) | |
717 | break; | |
718 | ||
4a59fd13 | 719 | if (*arg != '-' || !arg[1]) { |
51a9949e RS |
720 | if (parse_nodash_opt(ctx, arg, options) == 0) |
721 | continue; | |
ff43ec3e | 722 | if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) |
979240fe | 723 | return PARSE_OPT_NON_OPTION; |
ff43ec3e | 724 | ctx->out[ctx->cpidx++] = ctx->argv[0]; |
4a59fd13 PH |
725 | continue; |
726 | } | |
727 | ||
5ad0d3d5 RS |
728 | /* lone -h asks for help */ |
729 | if (internal_help && ctx->total == 1 && !strcmp(arg + 1, "h")) | |
730 | goto show_usage; | |
731 | ||
b9d7f4b4 NTND |
732 | /* lone --git-completion-helper is asked by git-completion.bash */ |
733 | if (ctx->total == 1 && !strcmp(arg + 1, "-git-completion-helper")) | |
5205749d | 734 | return show_gitcomp(options); |
b9d7f4b4 | 735 | |
4a59fd13 | 736 | if (arg[1] != '-') { |
ff43ec3e | 737 | ctx->opt = arg + 1; |
07fe54db | 738 | switch (parse_short_opt(ctx, options)) { |
f41179f1 | 739 | case PARSE_OPT_ERROR: |
3bb0923f | 740 | return PARSE_OPT_ERROR; |
f41179f1 | 741 | case PARSE_OPT_UNKNOWN: |
38916c5b RS |
742 | if (ctx->opt) |
743 | check_typos(arg + 1, options); | |
5ad0d3d5 RS |
744 | if (internal_help && *ctx->opt == 'h') |
745 | goto show_usage; | |
b5ce3a54 | 746 | goto unknown; |
f41179f1 NTND |
747 | case PARSE_OPT_NON_OPTION: |
748 | case PARSE_OPT_HELP: | |
749 | case PARSE_OPT_COMPLETE: | |
750 | BUG("parse_short_opt() cannot return these"); | |
751 | case PARSE_OPT_DONE: | |
752 | break; | |
07fe54db | 753 | } |
ff43ec3e | 754 | if (ctx->opt) |
3a9f0f41 | 755 | check_typos(arg + 1, options); |
ff43ec3e | 756 | while (ctx->opt) { |
07fe54db | 757 | switch (parse_short_opt(ctx, options)) { |
f41179f1 | 758 | case PARSE_OPT_ERROR: |
3bb0923f | 759 | return PARSE_OPT_ERROR; |
f41179f1 | 760 | case PARSE_OPT_UNKNOWN: |
5ad0d3d5 RS |
761 | if (internal_help && *ctx->opt == 'h') |
762 | goto show_usage; | |
763 | ||
26141b5b PH |
764 | /* fake a short option thing to hide the fact that we may have |
765 | * started to parse aggregated stuff | |
766 | * | |
767 | * This is leaky, too bad. | |
768 | */ | |
769 | ctx->argv[0] = xstrdup(ctx->opt - 1); | |
770 | *(char *)ctx->argv[0] = '-'; | |
b5ce3a54 | 771 | goto unknown; |
f41179f1 NTND |
772 | case PARSE_OPT_NON_OPTION: |
773 | case PARSE_OPT_COMPLETE: | |
774 | case PARSE_OPT_HELP: | |
775 | BUG("parse_short_opt() cannot return these"); | |
776 | case PARSE_OPT_DONE: | |
777 | break; | |
07fe54db | 778 | } |
3a9f0f41 | 779 | } |
4a59fd13 PH |
780 | continue; |
781 | } | |
782 | ||
783 | if (!arg[2]) { /* "--" */ | |
ff43ec3e PH |
784 | if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) { |
785 | ctx->argc--; | |
786 | ctx->argv++; | |
4a59fd13 PH |
787 | } |
788 | break; | |
789 | } | |
790 | ||
b92891f9 | 791 | if (internal_help && !strcmp(arg + 2, "help-all")) |
47e9cd28 | 792 | return usage_with_options_internal(ctx, usagestr, options, 1, 0); |
b92891f9 | 793 | if (internal_help && !strcmp(arg + 2, "help")) |
ac20ff6d | 794 | goto show_usage; |
07fe54db | 795 | switch (parse_long_opt(ctx, arg + 2, options)) { |
f41179f1 | 796 | case PARSE_OPT_ERROR: |
3bb0923f | 797 | return PARSE_OPT_ERROR; |
f41179f1 | 798 | case PARSE_OPT_UNKNOWN: |
b5ce3a54 | 799 | goto unknown; |
f41179f1 | 800 | case PARSE_OPT_HELP: |
3bb0923f | 801 | goto show_usage; |
f41179f1 NTND |
802 | case PARSE_OPT_NON_OPTION: |
803 | case PARSE_OPT_COMPLETE: | |
804 | BUG("parse_long_opt() cannot return these"); | |
805 | case PARSE_OPT_DONE: | |
806 | break; | |
07fe54db | 807 | } |
b5ce3a54 RS |
808 | continue; |
809 | unknown: | |
202fbb33 NTND |
810 | if (ctx->flags & PARSE_OPT_ONE_SHOT) |
811 | break; | |
b5ce3a54 RS |
812 | if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN)) |
813 | return PARSE_OPT_UNKNOWN; | |
814 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
815 | ctx->opt = NULL; | |
ff43ec3e PH |
816 | } |
817 | return PARSE_OPT_DONE; | |
ac20ff6d | 818 | |
ac20ff6d | 819 | show_usage: |
3bb0923f | 820 | return usage_with_options_internal(ctx, usagestr, options, 0, 0); |
ff43ec3e PH |
821 | } |
822 | ||
823 | int parse_options_end(struct parse_opt_ctx_t *ctx) | |
824 | { | |
202fbb33 NTND |
825 | if (ctx->flags & PARSE_OPT_ONE_SHOT) |
826 | return ctx->total - ctx->argc; | |
827 | ||
f919ffeb | 828 | MOVE_ARRAY(ctx->out + ctx->cpidx, ctx->argv, ctx->argc); |
ff43ec3e PH |
829 | ctx->out[ctx->cpidx + ctx->argc] = NULL; |
830 | return ctx->cpidx + ctx->argc; | |
831 | } | |
832 | ||
37782920 SB |
833 | int parse_options(int argc, const char **argv, const char *prefix, |
834 | const struct option *options, const char * const usagestr[], | |
835 | int flags) | |
ff43ec3e PH |
836 | { |
837 | struct parse_opt_ctx_t ctx; | |
5c387428 | 838 | struct option *real_options; |
ff43ec3e | 839 | |
b02e7d5d JS |
840 | disallow_abbreviated_options = |
841 | git_env_bool("GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS", 0); | |
842 | ||
5c387428 NTND |
843 | memset(&ctx, 0, sizeof(ctx)); |
844 | real_options = preprocess_options(&ctx, options); | |
845 | if (real_options) | |
846 | options = real_options; | |
847 | parse_options_start_1(&ctx, argc, argv, prefix, options, flags); | |
ff43ec3e PH |
848 | switch (parse_options_step(&ctx, options, usagestr)) { |
849 | case PARSE_OPT_HELP: | |
3bb0923f | 850 | case PARSE_OPT_ERROR: |
ff43ec3e | 851 | exit(129); |
a92ec7ef NTND |
852 | case PARSE_OPT_COMPLETE: |
853 | exit(0); | |
979240fe | 854 | case PARSE_OPT_NON_OPTION: |
ff43ec3e PH |
855 | case PARSE_OPT_DONE: |
856 | break; | |
857 | default: /* PARSE_OPT_UNKNOWN */ | |
07fe54db | 858 | if (ctx.argv[0][1] == '-') { |
89003426 | 859 | error(_("unknown option `%s'"), ctx.argv[0] + 2); |
b141a478 | 860 | } else if (isascii(*ctx.opt)) { |
89003426 | 861 | error(_("unknown switch `%c'"), *ctx.opt); |
b141a478 | 862 | } else { |
89003426 | 863 | error(_("unknown non-ascii option in string: `%s'"), |
b141a478 | 864 | ctx.argv[0]); |
07fe54db PH |
865 | } |
866 | usage_with_options(usagestr, options); | |
4a59fd13 PH |
867 | } |
868 | ||
76759c7d | 869 | precompose_argv(argc, argv); |
5c387428 NTND |
870 | free(real_options); |
871 | free(ctx.alias_groups); | |
7e7bbcb4 | 872 | return parse_options_end(&ctx); |
4a59fd13 | 873 | } |
d7a38c54 | 874 | |
9c7304e3 | 875 | static int usage_argh(const struct option *opts, FILE *outfile) |
29f25d49 SB |
876 | { |
877 | const char *s; | |
5f0df44c RS |
878 | int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || |
879 | !opts->argh || !!strpbrk(opts->argh, "()<>[]|"); | |
29f25d49 SB |
880 | if (opts->flags & PARSE_OPT_OPTARG) |
881 | if (opts->long_name) | |
882 | s = literal ? "[=%s]" : "[=<%s>]"; | |
883 | else | |
884 | s = literal ? "[%s]" : "[<%s>]"; | |
885 | else | |
886 | s = literal ? " %s" : " <%s>"; | |
c0821965 | 887 | return utf8_fprintf(outfile, s, opts->argh ? _(opts->argh) : _("...")); |
29f25d49 SB |
888 | } |
889 | ||
d7a38c54 PH |
890 | #define USAGE_OPTS_WIDTH 24 |
891 | #define USAGE_GAP 2 | |
892 | ||
47e9cd28 TR |
893 | static int usage_with_options_internal(struct parse_opt_ctx_t *ctx, |
894 | const char * const *usagestr, | |
895 | const struct option *opts, int full, int err) | |
d7a38c54 | 896 | { |
9c7304e3 | 897 | FILE *outfile = err ? stderr : stdout; |
a6304fa4 | 898 | int need_newline; |
9c7304e3 | 899 | |
49b61802 RS |
900 | if (!usagestr) |
901 | return PARSE_OPT_HELP; | |
902 | ||
47e9cd28 TR |
903 | if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) |
904 | fprintf(outfile, "cat <<\\EOF\n"); | |
905 | ||
54e6dc7d | 906 | fprintf_ln(outfile, _("usage: %s"), _(*usagestr++)); |
f389c808 | 907 | while (*usagestr && **usagestr) |
66f5f6dc ÆAB |
908 | /* |
909 | * TRANSLATORS: the colon here should align with the | |
910 | * one in "usage: %s" translation. | |
911 | */ | |
54e6dc7d | 912 | fprintf_ln(outfile, _(" or: %s"), _(*usagestr++)); |
44d86e91 | 913 | while (*usagestr) { |
54e6dc7d NTND |
914 | if (**usagestr) |
915 | fprintf_ln(outfile, _(" %s"), _(*usagestr)); | |
916 | else | |
1a9bf1e1 | 917 | fputc('\n', outfile); |
44d86e91 JK |
918 | usagestr++; |
919 | } | |
d7a38c54 | 920 | |
a6304fa4 | 921 | need_newline = 1; |
d7a38c54 PH |
922 | |
923 | for (; opts->type != OPTION_END; opts++) { | |
924 | size_t pos; | |
925 | int pad; | |
926 | ||
927 | if (opts->type == OPTION_GROUP) { | |
9c7304e3 | 928 | fputc('\n', outfile); |
a6304fa4 | 929 | need_newline = 0; |
d7a38c54 | 930 | if (*opts->help) |
54e6dc7d | 931 | fprintf(outfile, "%s\n", _(opts->help)); |
d7a38c54 PH |
932 | continue; |
933 | } | |
dd3bf0f4 PH |
934 | if (!full && (opts->flags & PARSE_OPT_HIDDEN)) |
935 | continue; | |
d7a38c54 | 936 | |
a6304fa4 BC |
937 | if (need_newline) { |
938 | fputc('\n', outfile); | |
939 | need_newline = 0; | |
940 | } | |
941 | ||
9c7304e3 | 942 | pos = fprintf(outfile, " "); |
cbb08c2e | 943 | if (opts->short_name) { |
51a9949e | 944 | if (opts->flags & PARSE_OPT_NODASH) |
9c7304e3 | 945 | pos += fprintf(outfile, "%c", opts->short_name); |
51a9949e | 946 | else |
9c7304e3 | 947 | pos += fprintf(outfile, "-%c", opts->short_name); |
51a9949e | 948 | } |
d7a38c54 | 949 | if (opts->long_name && opts->short_name) |
9c7304e3 | 950 | pos += fprintf(outfile, ", "); |
d7a38c54 | 951 | if (opts->long_name) |
cbb08c2e | 952 | pos += fprintf(outfile, "--%s", opts->long_name); |
e0319ff5 | 953 | if (opts->type == OPTION_NUMBER) |
c0821965 | 954 | pos += utf8_fprintf(outfile, _("-NUM")); |
d7a38c54 | 955 | |
b57c68a6 JN |
956 | if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) || |
957 | !(opts->flags & PARSE_OPT_NOARG)) | |
9c7304e3 | 958 | pos += usage_argh(opts, outfile); |
d7a38c54 | 959 | |
f389c808 AR |
960 | if (pos <= USAGE_OPTS_WIDTH) |
961 | pad = USAGE_OPTS_WIDTH - pos; | |
d7a38c54 | 962 | else { |
9c7304e3 | 963 | fputc('\n', outfile); |
d7a38c54 PH |
964 | pad = USAGE_OPTS_WIDTH; |
965 | } | |
5c387428 NTND |
966 | if (opts->type == OPTION_ALIAS) { |
967 | fprintf(outfile, "%*s", pad + USAGE_GAP, ""); | |
968 | fprintf_ln(outfile, _("alias of --%s"), | |
969 | (const char *)opts->value); | |
970 | continue; | |
971 | } | |
54e6dc7d | 972 | fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", _(opts->help)); |
d7a38c54 | 973 | } |
9c7304e3 | 974 | fputc('\n', outfile); |
f389c808 | 975 | |
47e9cd28 TR |
976 | if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) |
977 | fputs("EOF\n", outfile); | |
978 | ||
ee68b87a | 979 | return PARSE_OPT_HELP; |
d7a38c54 | 980 | } |
0ce865b1 | 981 | |
c2e86add | 982 | void NORETURN usage_with_options(const char * const *usagestr, |
ff43ec3e | 983 | const struct option *opts) |
dd3bf0f4 | 984 | { |
47e9cd28 | 985 | usage_with_options_internal(NULL, usagestr, opts, 0, 1); |
ff43ec3e | 986 | exit(129); |
dd3bf0f4 PH |
987 | } |
988 | ||
c2e86add | 989 | void NORETURN usage_msg_opt(const char *msg, |
451bb210 CC |
990 | const char * const *usagestr, |
991 | const struct option *options) | |
992 | { | |
87433261 | 993 | fprintf(stderr, "fatal: %s\n\n", msg); |
451bb210 CC |
994 | usage_with_options(usagestr, options); |
995 | } | |
996 | ||
9440b831 | 997 | const char *optname(const struct option *opt, int flags) |
a469a101 | 998 | { |
9440b831 NTND |
999 | static struct strbuf sb = STRBUF_INIT; |
1000 | ||
1001 | strbuf_reset(&sb); | |
a469a101 | 1002 | if (flags & OPT_SHORT) |
9440b831 NTND |
1003 | strbuf_addf(&sb, "switch `%c'", opt->short_name); |
1004 | else if (flags & OPT_UNSET) | |
1005 | strbuf_addf(&sb, "option `no-%s'", opt->long_name); | |
1006 | else | |
1007 | strbuf_addf(&sb, "option `%s'", opt->long_name); | |
1008 | ||
1009 | return sb.buf; | |
a469a101 | 1010 | } |