Commit | Line | Data |
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903a5b8a | 1 | /* |
03e1579f | 2 | * SPDX-License-Identifier: MIT |
903a5b8a | 3 | * |
fc07e526 SM |
4 | * Copyright (c) 2019-2021 Philippe Proulx <pproulx@efficios.com> |
5 | * Copyright (c) 2020-2021 Simon Marchi <simon.marchi@efficios.com> | |
903a5b8a SM |
6 | */ |
7 | ||
7ac57709 SM |
8 | #include <assert.h> |
9 | #include <stdarg.h> | |
903a5b8a | 10 | #include <stdbool.h> |
7ac57709 | 11 | #include <stdio.h> |
903a5b8a SM |
12 | #include <stdlib.h> |
13 | #include <string.h> | |
903a5b8a SM |
14 | |
15 | #include "argpar.h" | |
16 | ||
fb12ac67 PP |
17 | #define ARGPAR_REALLOC(_ptr, _type, _nmemb) \ |
18 | ((_type *) realloc(_ptr, (_nmemb) * sizeof(_type))) | |
19 | ||
20 | #define ARGPAR_CALLOC(_type, _nmemb) \ | |
21 | ((_type *) calloc((_nmemb), sizeof(_type))) | |
22 | ||
23 | #define ARGPAR_ZALLOC(_type) ARGPAR_CALLOC(_type, 1) | |
7ac57709 SM |
24 | |
25 | #define ARGPAR_ASSERT(_cond) assert(_cond) | |
26 | ||
1ae22b5e SM |
27 | #ifdef __MINGW_PRINTF_FORMAT |
28 | # define ARGPAR_PRINTF_FORMAT __MINGW_PRINTF_FORMAT | |
29 | #else | |
30 | # define ARGPAR_PRINTF_FORMAT printf | |
31 | #endif | |
32 | ||
fc07e526 SM |
33 | /* |
34 | * An argpar iterator. | |
35 | * | |
2af370d0 PP |
36 | * Such a structure contains the state of an iterator between calls to |
37 | * argpar_iter_next(). | |
fc07e526 SM |
38 | */ |
39 | struct argpar_iter { | |
40 | /* | |
41 | * Data provided by the user to argpar_iter_create(); immutable | |
42 | * afterwards. | |
43 | */ | |
44 | unsigned int argc; | |
45 | const char * const *argv; | |
46 | const struct argpar_opt_descr *descrs; | |
47 | ||
48 | /* | |
49 | * Index of the argument to process in the next | |
2af370d0 | 50 | * argpar_iter_next() call. |
fc07e526 SM |
51 | */ |
52 | unsigned int i; | |
53 | ||
54 | /* Counter of non-option arguments */ | |
55 | int non_opt_index; | |
56 | ||
57 | /* | |
d7a82d7f PP |
58 | * Current character within the current short option group: if |
59 | * it's not `NULL`, the parser is within a short option group, | |
60 | * therefore it must resume there in the next argpar_iter_next() | |
61 | * call. | |
fc07e526 | 62 | */ |
d7a82d7f | 63 | const char *short_opt_group_ch; |
d1f7bbdb PP |
64 | |
65 | /* Temporary character buffer which only grows */ | |
66 | struct { | |
67 | size_t size; | |
68 | char *data; | |
69 | } tmp_buf; | |
fc07e526 SM |
70 | }; |
71 | ||
d4539a90 PP |
72 | /* Base parsing item */ |
73 | struct argpar_item { | |
74 | enum argpar_item_type type; | |
75 | }; | |
76 | ||
77 | /* Option parsing item */ | |
78 | struct argpar_item_opt { | |
79 | struct argpar_item base; | |
80 | ||
81 | /* Corresponding descriptor */ | |
82 | const struct argpar_opt_descr *descr; | |
83 | ||
84 | /* Argument, or `NULL` if none; owned by this */ | |
85 | char *arg; | |
86 | }; | |
87 | ||
88 | /* Non-option parsing item */ | |
89 | struct argpar_item_non_opt { | |
90 | struct argpar_item base; | |
91 | ||
92 | /* | |
93 | * Complete argument, pointing to one of the entries of the | |
94 | * original arguments (`argv`). | |
95 | */ | |
96 | const char *arg; | |
97 | ||
98 | /* | |
99 | * Index of this argument amongst all original arguments | |
100 | * (`argv`). | |
101 | */ | |
102 | unsigned int orig_index; | |
103 | ||
104 | /* Index of this argument amongst other non-option arguments */ | |
105 | unsigned int non_opt_index; | |
106 | }; | |
107 | ||
1ae22b5e | 108 | static __attribute__((format(ARGPAR_PRINTF_FORMAT, 1, 0))) |
fb12ac67 | 109 | char *argpar_vasprintf(const char * const fmt, va_list args) |
7ac57709 SM |
110 | { |
111 | int len1, len2; | |
112 | char *str; | |
113 | va_list args2; | |
114 | ||
115 | va_copy(args2, args); | |
7ac57709 SM |
116 | len1 = vsnprintf(NULL, 0, fmt, args); |
117 | if (len1 < 0) { | |
118 | str = NULL; | |
119 | goto end; | |
120 | } | |
121 | ||
122 | str = malloc(len1 + 1); | |
123 | if (!str) { | |
124 | goto end; | |
125 | } | |
126 | ||
127 | len2 = vsnprintf(str, len1 + 1, fmt, args2); | |
7ac57709 SM |
128 | ARGPAR_ASSERT(len1 == len2); |
129 | ||
130 | end: | |
92ecd98e | 131 | va_end(args2); |
7ac57709 SM |
132 | return str; |
133 | } | |
134 | ||
135 | ||
1ae22b5e | 136 | static __attribute__((format(ARGPAR_PRINTF_FORMAT, 1, 2))) |
fb12ac67 | 137 | char *argpar_asprintf(const char * const fmt, ...) |
7ac57709 SM |
138 | { |
139 | va_list args; | |
140 | char *str; | |
f46b5106 | 141 | |
7ac57709 SM |
142 | va_start(args, fmt); |
143 | str = argpar_vasprintf(fmt, args); | |
144 | va_end(args); | |
7ac57709 SM |
145 | return str; |
146 | } | |
147 | ||
1ae22b5e | 148 | static __attribute__((format(ARGPAR_PRINTF_FORMAT, 2, 3))) |
37bb2b1f | 149 | bool try_append_string_printf(char ** const str, const char *fmt, ...) |
7ac57709 SM |
150 | { |
151 | char *new_str = NULL; | |
37bb2b1f | 152 | char *addendum = NULL; |
7ac57709 SM |
153 | bool success; |
154 | va_list args; | |
155 | ||
37bb2b1f PP |
156 | if (!str) { |
157 | success = true; | |
158 | goto end; | |
159 | } | |
160 | ||
7ac57709 | 161 | ARGPAR_ASSERT(str); |
7ac57709 SM |
162 | va_start(args, fmt); |
163 | addendum = argpar_vasprintf(fmt, args); | |
164 | va_end(args); | |
165 | ||
166 | if (!addendum) { | |
167 | success = false; | |
168 | goto end; | |
169 | } | |
170 | ||
171 | new_str = argpar_asprintf("%s%s", *str ? *str : "", addendum); | |
172 | if (!new_str) { | |
173 | success = false; | |
174 | goto end; | |
175 | } | |
f46b5106 | 176 | |
7ac57709 SM |
177 | free(*str); |
178 | *str = new_str; | |
7ac57709 SM |
179 | success = true; |
180 | ||
181 | end: | |
182 | free(addendum); | |
7ac57709 SM |
183 | return success; |
184 | } | |
185 | ||
d4539a90 PP |
186 | ARGPAR_HIDDEN |
187 | enum argpar_item_type argpar_item_type(const struct argpar_item * const item) | |
188 | { | |
189 | ARGPAR_ASSERT(item); | |
190 | return item->type; | |
191 | } | |
192 | ||
193 | ARGPAR_HIDDEN | |
194 | const struct argpar_opt_descr *argpar_item_opt_descr( | |
195 | const struct argpar_item * const item) | |
196 | { | |
197 | ARGPAR_ASSERT(item); | |
198 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_OPT); | |
199 | return ((const struct argpar_item_opt *) item)->descr; | |
200 | } | |
201 | ||
202 | ARGPAR_HIDDEN | |
203 | const char *argpar_item_opt_arg(const struct argpar_item * const item) | |
204 | { | |
205 | ARGPAR_ASSERT(item); | |
206 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_OPT); | |
207 | return ((const struct argpar_item_opt *) item)->arg; | |
208 | } | |
209 | ||
210 | ARGPAR_HIDDEN | |
211 | const char *argpar_item_non_opt_arg(const struct argpar_item * const item) | |
212 | { | |
213 | ARGPAR_ASSERT(item); | |
214 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
215 | return ((const struct argpar_item_non_opt *) item)->arg; | |
216 | } | |
217 | ||
218 | ARGPAR_HIDDEN | |
219 | unsigned int argpar_item_non_opt_orig_index( | |
220 | const struct argpar_item * const item) | |
221 | { | |
222 | ARGPAR_ASSERT(item); | |
223 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
224 | return ((const struct argpar_item_non_opt *) item)->orig_index; | |
225 | } | |
226 | ||
227 | ARGPAR_HIDDEN | |
228 | unsigned int argpar_item_non_opt_non_opt_index( | |
229 | const struct argpar_item * const item) | |
230 | { | |
231 | ARGPAR_ASSERT(item); | |
232 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
233 | return ((const struct argpar_item_non_opt *) item)->non_opt_index; | |
234 | } | |
235 | ||
fc07e526 SM |
236 | ARGPAR_HIDDEN |
237 | void argpar_item_destroy(const struct argpar_item * const item) | |
903a5b8a SM |
238 | { |
239 | if (!item) { | |
240 | goto end; | |
241 | } | |
242 | ||
1c9a6bde | 243 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
fc07e526 SM |
244 | struct argpar_item_opt * const opt_item = |
245 | (struct argpar_item_opt *) item; | |
903a5b8a | 246 | |
d4539a90 | 247 | free(opt_item->arg); |
903a5b8a SM |
248 | } |
249 | ||
fc07e526 | 250 | free((void *) item); |
903a5b8a SM |
251 | |
252 | end: | |
253 | return; | |
254 | } | |
255 | ||
256 | static | |
1c9a6bde SM |
257 | struct argpar_item_opt *create_opt_item( |
258 | const struct argpar_opt_descr * const descr, | |
903a5b8a SM |
259 | const char * const arg) |
260 | { | |
1c9a6bde | 261 | struct argpar_item_opt *opt_item = |
fb12ac67 | 262 | ARGPAR_ZALLOC(struct argpar_item_opt); |
903a5b8a SM |
263 | |
264 | if (!opt_item) { | |
265 | goto end; | |
266 | } | |
267 | ||
1c9a6bde | 268 | opt_item->base.type = ARGPAR_ITEM_TYPE_OPT; |
903a5b8a SM |
269 | opt_item->descr = descr; |
270 | ||
271 | if (arg) { | |
7ac57709 | 272 | opt_item->arg = strdup(arg); |
903a5b8a SM |
273 | if (!opt_item->arg) { |
274 | goto error; | |
275 | } | |
276 | } | |
277 | ||
278 | goto end; | |
279 | ||
280 | error: | |
fc07e526 | 281 | argpar_item_destroy(&opt_item->base); |
903a5b8a SM |
282 | opt_item = NULL; |
283 | ||
284 | end: | |
285 | return opt_item; | |
286 | } | |
287 | ||
288 | static | |
1c9a6bde | 289 | struct argpar_item_non_opt *create_non_opt_item(const char * const arg, |
903a5b8a SM |
290 | const unsigned int orig_index, |
291 | const unsigned int non_opt_index) | |
292 | { | |
1c9a6bde | 293 | struct argpar_item_non_opt * const non_opt_item = |
fb12ac67 | 294 | ARGPAR_ZALLOC(struct argpar_item_non_opt); |
903a5b8a SM |
295 | |
296 | if (!non_opt_item) { | |
297 | goto end; | |
298 | } | |
299 | ||
1c9a6bde | 300 | non_opt_item->base.type = ARGPAR_ITEM_TYPE_NON_OPT; |
903a5b8a SM |
301 | non_opt_item->arg = arg; |
302 | non_opt_item->orig_index = orig_index; | |
303 | non_opt_item->non_opt_index = non_opt_index; | |
304 | ||
305 | end: | |
306 | return non_opt_item; | |
307 | } | |
308 | ||
309 | static | |
1c9a6bde SM |
310 | const struct argpar_opt_descr *find_descr( |
311 | const struct argpar_opt_descr * const descrs, | |
903a5b8a SM |
312 | const char short_name, const char * const long_name) |
313 | { | |
1c9a6bde | 314 | const struct argpar_opt_descr *descr; |
903a5b8a SM |
315 | |
316 | for (descr = descrs; descr->short_name || descr->long_name; descr++) { | |
317 | if (short_name && descr->short_name && | |
318 | short_name == descr->short_name) { | |
319 | goto end; | |
320 | } | |
321 | ||
322 | if (long_name && descr->long_name && | |
323 | strcmp(long_name, descr->long_name) == 0) { | |
324 | goto end; | |
325 | } | |
326 | } | |
327 | ||
328 | end: | |
329 | return !descr->short_name && !descr->long_name ? NULL : descr; | |
330 | } | |
331 | ||
332 | enum parse_orig_arg_opt_ret { | |
333 | PARSE_ORIG_ARG_OPT_RET_OK, | |
871eba32 PP |
334 | PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT = -1, |
335 | PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG = -2, | |
871eba32 PP |
336 | PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG = -4, |
337 | PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY = -5, | |
903a5b8a SM |
338 | }; |
339 | ||
340 | static | |
d7a82d7f PP |
341 | enum parse_orig_arg_opt_ret parse_short_opt_group( |
342 | const char * const short_opt_group, | |
903a5b8a | 343 | const char * const next_orig_arg, |
1c9a6bde | 344 | const struct argpar_opt_descr * const descrs, |
fc07e526 SM |
345 | struct argpar_iter * const iter, |
346 | char ** const error, struct argpar_item ** const item) | |
903a5b8a SM |
347 | { |
348 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; | |
fc07e526 SM |
349 | bool used_next_orig_arg = false; |
350 | const char *opt_arg = NULL; | |
351 | const struct argpar_opt_descr *descr; | |
352 | struct argpar_item_opt *opt_item; | |
903a5b8a | 353 | |
d7a82d7f | 354 | ARGPAR_ASSERT(strlen(short_opt_group) != 0); |
903a5b8a | 355 | |
d7a82d7f PP |
356 | if (!iter->short_opt_group_ch) { |
357 | iter->short_opt_group_ch = short_opt_group; | |
fc07e526 | 358 | } |
903a5b8a | 359 | |
fc07e526 | 360 | /* Find corresponding option descriptor */ |
d7a82d7f | 361 | descr = find_descr(descrs, *iter->short_opt_group_ch, NULL); |
fc07e526 | 362 | if (!descr) { |
37bb2b1f | 363 | try_append_string_printf(error, "Unknown option `-%c`", |
d7a82d7f | 364 | *iter->short_opt_group_ch); |
871eba32 | 365 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
fc07e526 SM |
366 | goto error; |
367 | } | |
903a5b8a | 368 | |
fc07e526 | 369 | if (descr->with_arg) { |
d7a82d7f | 370 | if (iter->short_opt_group_ch[1]) { |
fc07e526 | 371 | /* `-oarg` form */ |
d7a82d7f | 372 | opt_arg = &iter->short_opt_group_ch[1]; |
fc07e526 SM |
373 | } else { |
374 | /* `-o arg` form */ | |
375 | opt_arg = next_orig_arg; | |
376 | used_next_orig_arg = true; | |
903a5b8a SM |
377 | } |
378 | ||
fc07e526 SM |
379 | /* |
380 | * We accept `-o ''` (empty option argument), but not | |
381 | * `-o` alone if an option argument is expected. | |
382 | */ | |
d7a82d7f | 383 | if (!opt_arg || (iter->short_opt_group_ch[1] && |
fb12ac67 | 384 | strlen(opt_arg) == 0)) { |
37bb2b1f | 385 | try_append_string_printf(error, |
fc07e526 | 386 | "Missing required argument for option `-%c`", |
d7a82d7f | 387 | *iter->short_opt_group_ch); |
fc07e526 | 388 | used_next_orig_arg = false; |
871eba32 | 389 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG; |
903a5b8a SM |
390 | goto error; |
391 | } | |
fc07e526 | 392 | } |
903a5b8a | 393 | |
fc07e526 SM |
394 | /* Create and append option argument */ |
395 | opt_item = create_opt_item(descr, opt_arg); | |
396 | if (!opt_item) { | |
871eba32 | 397 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; |
fc07e526 SM |
398 | goto error; |
399 | } | |
903a5b8a | 400 | |
fc07e526 | 401 | *item = &opt_item->base; |
d7a82d7f | 402 | iter->short_opt_group_ch++; |
903a5b8a | 403 | |
d7a82d7f | 404 | if (descr->with_arg || !*iter->short_opt_group_ch) { |
fc07e526 | 405 | /* Option has an argument: no more options */ |
d7a82d7f | 406 | iter->short_opt_group_ch = NULL; |
fc07e526 SM |
407 | |
408 | if (used_next_orig_arg) { | |
409 | iter->i += 2; | |
410 | } else { | |
411 | iter->i++; | |
412 | } | |
903a5b8a SM |
413 | } |
414 | ||
415 | goto end; | |
416 | ||
417 | error: | |
871eba32 | 418 | ARGPAR_ASSERT(ret != PARSE_ORIG_ARG_OPT_RET_OK); |
903a5b8a SM |
419 | |
420 | end: | |
421 | return ret; | |
422 | } | |
423 | ||
424 | static | |
425 | enum parse_orig_arg_opt_ret parse_long_opt(const char * const long_opt_arg, | |
426 | const char * const next_orig_arg, | |
1c9a6bde | 427 | const struct argpar_opt_descr * const descrs, |
fc07e526 SM |
428 | struct argpar_iter * const iter, |
429 | char ** const error, struct argpar_item ** const item) | |
903a5b8a | 430 | { |
903a5b8a | 431 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; |
1c9a6bde SM |
432 | const struct argpar_opt_descr *descr; |
433 | struct argpar_item_opt *opt_item; | |
fc07e526 | 434 | bool used_next_orig_arg = false; |
903a5b8a SM |
435 | |
436 | /* Option's argument, if any */ | |
437 | const char *opt_arg = NULL; | |
438 | ||
439 | /* Position of first `=`, if any */ | |
440 | const char *eq_pos; | |
441 | ||
903a5b8a SM |
442 | /* Option name */ |
443 | const char *long_opt_name = long_opt_arg; | |
444 | ||
dd757a65 | 445 | ARGPAR_ASSERT(strlen(long_opt_arg) != 0); |
903a5b8a SM |
446 | |
447 | /* Find the first `=` in original argument */ | |
448 | eq_pos = strchr(long_opt_arg, '='); | |
449 | if (eq_pos) { | |
450 | const size_t long_opt_name_size = eq_pos - long_opt_arg; | |
451 | ||
452 | /* Isolate the option name */ | |
d1f7bbdb PP |
453 | while (long_opt_name_size > iter->tmp_buf.size - 1) { |
454 | iter->tmp_buf.size *= 2; | |
455 | iter->tmp_buf.data = ARGPAR_REALLOC(iter->tmp_buf.data, | |
456 | char, iter->tmp_buf.size); | |
457 | if (!iter->tmp_buf.data) { | |
458 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
459 | goto error; | |
460 | } | |
903a5b8a SM |
461 | } |
462 | ||
d1f7bbdb PP |
463 | memcpy(iter->tmp_buf.data, long_opt_arg, long_opt_name_size); |
464 | iter->tmp_buf.data[long_opt_name_size] = '\0'; | |
465 | long_opt_name = iter->tmp_buf.data; | |
903a5b8a SM |
466 | } |
467 | ||
468 | /* Find corresponding option descriptor */ | |
469 | descr = find_descr(descrs, '\0', long_opt_name); | |
470 | if (!descr) { | |
37bb2b1f | 471 | try_append_string_printf(error, "Unknown option `--%s`", |
fb12ac67 | 472 | long_opt_name); |
903a5b8a SM |
473 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
474 | goto error; | |
475 | } | |
476 | ||
477 | /* Find option's argument if any */ | |
478 | if (descr->with_arg) { | |
479 | if (eq_pos) { | |
480 | /* `--long-opt=arg` style */ | |
481 | opt_arg = eq_pos + 1; | |
482 | } else { | |
483 | /* `--long-opt arg` style */ | |
484 | if (!next_orig_arg) { | |
37bb2b1f | 485 | try_append_string_printf(error, |
903a5b8a SM |
486 | "Missing required argument for option `--%s`", |
487 | long_opt_name); | |
871eba32 | 488 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG; |
903a5b8a SM |
489 | goto error; |
490 | } | |
491 | ||
492 | opt_arg = next_orig_arg; | |
fc07e526 | 493 | used_next_orig_arg = true; |
903a5b8a | 494 | } |
430fe886 SM |
495 | } else if (eq_pos) { |
496 | /* | |
497 | * Unexpected `--opt=arg` style for a long option which | |
498 | * doesn't accept an argument. | |
499 | */ | |
37bb2b1f | 500 | try_append_string_printf(error, |
fc07e526 | 501 | "Unexpected argument for option `--%s`", long_opt_name); |
871eba32 | 502 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG; |
430fe886 | 503 | goto error; |
903a5b8a SM |
504 | } |
505 | ||
506 | /* Create and append option argument */ | |
507 | opt_item = create_opt_item(descr, opt_arg); | |
508 | if (!opt_item) { | |
509 | goto error; | |
510 | } | |
511 | ||
fc07e526 SM |
512 | if (used_next_orig_arg) { |
513 | iter->i += 2; | |
514 | } else { | |
515 | iter->i++; | |
7ac57709 SM |
516 | } |
517 | ||
fc07e526 | 518 | *item = &opt_item->base; |
903a5b8a SM |
519 | goto end; |
520 | ||
521 | error: | |
871eba32 | 522 | ARGPAR_ASSERT(ret != PARSE_ORIG_ARG_OPT_RET_OK); |
903a5b8a SM |
523 | |
524 | end: | |
525 | return ret; | |
526 | } | |
527 | ||
528 | static | |
529 | enum parse_orig_arg_opt_ret parse_orig_arg_opt(const char * const orig_arg, | |
530 | const char * const next_orig_arg, | |
1c9a6bde | 531 | const struct argpar_opt_descr * const descrs, |
fb12ac67 | 532 | struct argpar_iter * const iter, char ** const error, |
fc07e526 | 533 | struct argpar_item ** const item) |
903a5b8a SM |
534 | { |
535 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; | |
536 | ||
7ac57709 | 537 | ARGPAR_ASSERT(orig_arg[0] == '-'); |
903a5b8a SM |
538 | |
539 | if (orig_arg[1] == '-') { | |
540 | /* Long option */ | |
541 | ret = parse_long_opt(&orig_arg[2], | |
fc07e526 | 542 | next_orig_arg, descrs, iter, error, item); |
903a5b8a SM |
543 | } else { |
544 | /* Short option */ | |
d7a82d7f | 545 | ret = parse_short_opt_group(&orig_arg[1], |
fc07e526 | 546 | next_orig_arg, descrs, iter, error, item); |
903a5b8a SM |
547 | } |
548 | ||
549 | return ret; | |
550 | } | |
551 | ||
552 | static | |
37bb2b1f | 553 | bool try_prepend_while_parsing_arg_to_error(char ** const error, |
903a5b8a SM |
554 | const unsigned int i, const char * const arg) |
555 | { | |
7ac57709 SM |
556 | char *new_error; |
557 | bool success; | |
903a5b8a | 558 | |
37bb2b1f PP |
559 | if (!error) { |
560 | success = true; | |
561 | goto end; | |
562 | } | |
563 | ||
7ac57709 | 564 | ARGPAR_ASSERT(*error); |
7ac57709 SM |
565 | new_error = argpar_asprintf("While parsing argument #%u (`%s`): %s", |
566 | i + 1, arg, *error); | |
567 | if (!new_error) { | |
568 | success = false; | |
903a5b8a SM |
569 | goto end; |
570 | } | |
571 | ||
7ac57709 SM |
572 | free(*error); |
573 | *error = new_error; | |
574 | success = true; | |
903a5b8a SM |
575 | |
576 | end: | |
7ac57709 | 577 | return success; |
903a5b8a SM |
578 | } |
579 | ||
7ac57709 | 580 | ARGPAR_HIDDEN |
fc07e526 SM |
581 | struct argpar_iter *argpar_iter_create(const unsigned int argc, |
582 | const char * const * const argv, | |
583 | const struct argpar_opt_descr * const descrs) | |
903a5b8a | 584 | { |
d1f7bbdb | 585 | struct argpar_iter *iter = ARGPAR_ZALLOC(struct argpar_iter); |
903a5b8a | 586 | |
fc07e526 SM |
587 | if (!iter) { |
588 | goto end; | |
903a5b8a SM |
589 | } |
590 | ||
fc07e526 SM |
591 | iter->argc = argc; |
592 | iter->argv = argv; | |
593 | iter->descrs = descrs; | |
d1f7bbdb PP |
594 | iter->tmp_buf.size = 128; |
595 | iter->tmp_buf.data = ARGPAR_CALLOC(char, iter->tmp_buf.size); | |
596 | if (!iter->tmp_buf.data) { | |
597 | argpar_iter_destroy(iter); | |
598 | iter = NULL; | |
599 | goto end; | |
600 | } | |
903a5b8a | 601 | |
fc07e526 SM |
602 | end: |
603 | return iter; | |
604 | } | |
903a5b8a | 605 | |
fc07e526 SM |
606 | ARGPAR_HIDDEN |
607 | void argpar_iter_destroy(struct argpar_iter * const iter) | |
608 | { | |
d1f7bbdb PP |
609 | if (iter) { |
610 | free(iter->tmp_buf.data); | |
611 | free(iter); | |
612 | } | |
fc07e526 | 613 | } |
903a5b8a | 614 | |
fc07e526 | 615 | ARGPAR_HIDDEN |
2af370d0 | 616 | enum argpar_iter_next_status argpar_iter_next( |
fc07e526 | 617 | struct argpar_iter * const iter, |
fb12ac67 | 618 | const struct argpar_item ** const item, char ** const error) |
fc07e526 | 619 | { |
2af370d0 | 620 | enum argpar_iter_next_status status; |
fc07e526 SM |
621 | enum parse_orig_arg_opt_ret parse_orig_arg_opt_ret; |
622 | const char *orig_arg; | |
623 | const char *next_orig_arg; | |
7ac57709 | 624 | |
fc07e526 | 625 | ARGPAR_ASSERT(iter->i <= iter->argc); |
37bb2b1f PP |
626 | |
627 | if (error) { | |
628 | *error = NULL; | |
629 | } | |
fc07e526 SM |
630 | |
631 | if (iter->i == iter->argc) { | |
2af370d0 | 632 | status = ARGPAR_ITER_NEXT_STATUS_END; |
fc07e526 SM |
633 | goto end; |
634 | } | |
7ac57709 | 635 | |
fc07e526 SM |
636 | orig_arg = iter->argv[iter->i]; |
637 | next_orig_arg = | |
638 | iter->i < (iter->argc - 1) ? iter->argv[iter->i + 1] : NULL; | |
639 | ||
dd757a65 PP |
640 | if (strcmp(orig_arg, "-") == 0 || strcmp(orig_arg, "--") == 0 || |
641 | orig_arg[0] != '-') { | |
fc07e526 | 642 | /* Non-option argument */ |
dd757a65 | 643 | const struct argpar_item_non_opt * const non_opt_item = |
fc07e526 SM |
644 | create_non_opt_item(orig_arg, iter->i, |
645 | iter->non_opt_index); | |
646 | ||
647 | if (!non_opt_item) { | |
2af370d0 | 648 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY; |
fc07e526 | 649 | goto end; |
903a5b8a SM |
650 | } |
651 | ||
fc07e526 SM |
652 | iter->non_opt_index++; |
653 | iter->i++; | |
654 | *item = &non_opt_item->base; | |
2af370d0 | 655 | status = ARGPAR_ITER_NEXT_STATUS_OK; |
fc07e526 SM |
656 | goto end; |
657 | } | |
903a5b8a | 658 | |
fc07e526 SM |
659 | /* Option argument */ |
660 | parse_orig_arg_opt_ret = parse_orig_arg_opt(orig_arg, | |
661 | next_orig_arg, iter->descrs, iter, error, | |
662 | (struct argpar_item **) item); | |
663 | switch (parse_orig_arg_opt_ret) { | |
664 | case PARSE_ORIG_ARG_OPT_RET_OK: | |
2af370d0 | 665 | status = ARGPAR_ITER_NEXT_STATUS_OK; |
fc07e526 SM |
666 | break; |
667 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT: | |
871eba32 | 668 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG: |
871eba32 | 669 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG: |
37bb2b1f PP |
670 | try_prepend_while_parsing_arg_to_error(error, iter->i, |
671 | orig_arg); | |
d4d05805 PP |
672 | |
673 | switch (parse_orig_arg_opt_ret) { | |
674 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT: | |
2af370d0 | 675 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNKNOWN_OPT; |
d4d05805 PP |
676 | break; |
677 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG: | |
2af370d0 | 678 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MISSING_OPT_ARG; |
d4d05805 | 679 | break; |
d4d05805 | 680 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG: |
2af370d0 | 681 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNEXPECTED_OPT_ARG; |
d4d05805 PP |
682 | break; |
683 | default: | |
684 | abort(); | |
685 | } | |
686 | ||
687 | break; | |
688 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY: | |
2af370d0 | 689 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY; |
fc07e526 SM |
690 | break; |
691 | default: | |
692 | abort(); | |
693 | } | |
694 | ||
695 | end: | |
696 | return status; | |
697 | } | |
698 | ||
699 | ARGPAR_HIDDEN | |
f3ab5ca1 | 700 | unsigned int argpar_iter_ingested_orig_args( |
fc07e526 SM |
701 | const struct argpar_iter * const iter) |
702 | { | |
703 | return iter->i; | |
704 | } |