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 | ||
8b95d883 PP |
108 | /* Parsing error */ |
109 | struct argpar_error { | |
110 | /* Original argument index */ | |
111 | unsigned int orig_index; | |
7ac57709 | 112 | |
8b95d883 PP |
113 | /* Name of unknown option; owned by this */ |
114 | char *unknown_opt_name; | |
f46b5106 | 115 | |
8b95d883 PP |
116 | /* Option descriptor */ |
117 | const struct argpar_opt_descr *opt_descr; | |
7ac57709 | 118 | |
8b95d883 PP |
119 | /* `true` if a short option caused the error */ |
120 | bool is_short; | |
121 | }; | |
7ac57709 | 122 | |
d4539a90 PP |
123 | ARGPAR_HIDDEN |
124 | enum argpar_item_type argpar_item_type(const struct argpar_item * const item) | |
125 | { | |
126 | ARGPAR_ASSERT(item); | |
127 | return item->type; | |
128 | } | |
129 | ||
130 | ARGPAR_HIDDEN | |
131 | const struct argpar_opt_descr *argpar_item_opt_descr( | |
132 | const struct argpar_item * const item) | |
133 | { | |
134 | ARGPAR_ASSERT(item); | |
135 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_OPT); | |
136 | return ((const struct argpar_item_opt *) item)->descr; | |
137 | } | |
138 | ||
139 | ARGPAR_HIDDEN | |
140 | const char *argpar_item_opt_arg(const struct argpar_item * const item) | |
141 | { | |
142 | ARGPAR_ASSERT(item); | |
143 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_OPT); | |
144 | return ((const struct argpar_item_opt *) item)->arg; | |
145 | } | |
146 | ||
147 | ARGPAR_HIDDEN | |
148 | const char *argpar_item_non_opt_arg(const struct argpar_item * const item) | |
149 | { | |
150 | ARGPAR_ASSERT(item); | |
151 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
152 | return ((const struct argpar_item_non_opt *) item)->arg; | |
153 | } | |
154 | ||
155 | ARGPAR_HIDDEN | |
156 | unsigned int argpar_item_non_opt_orig_index( | |
157 | const struct argpar_item * const item) | |
158 | { | |
159 | ARGPAR_ASSERT(item); | |
160 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
161 | return ((const struct argpar_item_non_opt *) item)->orig_index; | |
162 | } | |
163 | ||
164 | ARGPAR_HIDDEN | |
165 | unsigned int argpar_item_non_opt_non_opt_index( | |
166 | const struct argpar_item * const item) | |
167 | { | |
168 | ARGPAR_ASSERT(item); | |
169 | ARGPAR_ASSERT(item->type == ARGPAR_ITEM_TYPE_NON_OPT); | |
170 | return ((const struct argpar_item_non_opt *) item)->non_opt_index; | |
171 | } | |
172 | ||
fc07e526 SM |
173 | ARGPAR_HIDDEN |
174 | void argpar_item_destroy(const struct argpar_item * const item) | |
903a5b8a SM |
175 | { |
176 | if (!item) { | |
177 | goto end; | |
178 | } | |
179 | ||
1c9a6bde | 180 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
fc07e526 SM |
181 | struct argpar_item_opt * const opt_item = |
182 | (struct argpar_item_opt *) item; | |
903a5b8a | 183 | |
d4539a90 | 184 | free(opt_item->arg); |
903a5b8a SM |
185 | } |
186 | ||
fc07e526 | 187 | free((void *) item); |
903a5b8a SM |
188 | |
189 | end: | |
190 | return; | |
191 | } | |
192 | ||
193 | static | |
1c9a6bde SM |
194 | struct argpar_item_opt *create_opt_item( |
195 | const struct argpar_opt_descr * const descr, | |
903a5b8a SM |
196 | const char * const arg) |
197 | { | |
1c9a6bde | 198 | struct argpar_item_opt *opt_item = |
fb12ac67 | 199 | ARGPAR_ZALLOC(struct argpar_item_opt); |
903a5b8a SM |
200 | |
201 | if (!opt_item) { | |
202 | goto end; | |
203 | } | |
204 | ||
1c9a6bde | 205 | opt_item->base.type = ARGPAR_ITEM_TYPE_OPT; |
903a5b8a SM |
206 | opt_item->descr = descr; |
207 | ||
208 | if (arg) { | |
7ac57709 | 209 | opt_item->arg = strdup(arg); |
903a5b8a SM |
210 | if (!opt_item->arg) { |
211 | goto error; | |
212 | } | |
213 | } | |
214 | ||
215 | goto end; | |
216 | ||
217 | error: | |
fc07e526 | 218 | argpar_item_destroy(&opt_item->base); |
903a5b8a SM |
219 | opt_item = NULL; |
220 | ||
221 | end: | |
222 | return opt_item; | |
223 | } | |
224 | ||
225 | static | |
1c9a6bde | 226 | struct argpar_item_non_opt *create_non_opt_item(const char * const arg, |
903a5b8a SM |
227 | const unsigned int orig_index, |
228 | const unsigned int non_opt_index) | |
229 | { | |
1c9a6bde | 230 | struct argpar_item_non_opt * const non_opt_item = |
fb12ac67 | 231 | ARGPAR_ZALLOC(struct argpar_item_non_opt); |
903a5b8a SM |
232 | |
233 | if (!non_opt_item) { | |
234 | goto end; | |
235 | } | |
236 | ||
1c9a6bde | 237 | non_opt_item->base.type = ARGPAR_ITEM_TYPE_NON_OPT; |
903a5b8a SM |
238 | non_opt_item->arg = arg; |
239 | non_opt_item->orig_index = orig_index; | |
240 | non_opt_item->non_opt_index = non_opt_index; | |
241 | ||
242 | end: | |
243 | return non_opt_item; | |
244 | } | |
245 | ||
8b95d883 PP |
246 | /* |
247 | * If `error` is not `NULL`, sets the error `error` to a new parsing | |
248 | * error object, setting its `unknown_opt_name`, `opt_descr`, and | |
249 | * `is_short` members from the parameters. | |
250 | * | |
251 | * `unknown_opt_name` is the unknown option name without any `-` or `--` | |
252 | * prefix: `is_short` controls which type of unknown option it is. | |
253 | * | |
254 | * Returns 0 on success (including if `error` is `NULL`) or -1 on memory | |
255 | * error. | |
256 | */ | |
257 | static | |
258 | int set_error(struct argpar_error ** const error, | |
259 | const char * const unknown_opt_name, | |
260 | const struct argpar_opt_descr * const opt_descr, | |
261 | const bool is_short) | |
262 | { | |
263 | int ret = 0; | |
264 | ||
265 | if (!error) { | |
266 | goto end; | |
267 | } | |
268 | ||
269 | *error = ARGPAR_ZALLOC(struct argpar_error); | |
270 | if (!*error) { | |
271 | goto error; | |
272 | } | |
273 | ||
274 | if (unknown_opt_name) { | |
275 | (*error)->unknown_opt_name = ARGPAR_CALLOC(char, | |
276 | strlen(unknown_opt_name) + 1 + is_short ? 1 : 2); | |
277 | if (!(*error)->unknown_opt_name) { | |
278 | goto error; | |
279 | } | |
280 | ||
281 | if (is_short) { | |
282 | strcpy((*error)->unknown_opt_name, "-"); | |
283 | } else { | |
284 | strcpy((*error)->unknown_opt_name, "--"); | |
285 | } | |
286 | ||
287 | strcat((*error)->unknown_opt_name, unknown_opt_name); | |
288 | } | |
289 | ||
290 | (*error)->opt_descr = opt_descr; | |
291 | (*error)->is_short = is_short; | |
292 | goto end; | |
293 | ||
294 | error: | |
295 | argpar_error_destroy(*error); | |
296 | ret = -1; | |
297 | ||
298 | end: | |
299 | return ret; | |
300 | } | |
301 | ||
302 | ARGPAR_HIDDEN | |
303 | unsigned int argpar_error_orig_index(const struct argpar_error * const error) | |
304 | { | |
305 | ARGPAR_ASSERT(error); | |
306 | return error->orig_index; | |
307 | } | |
308 | ||
309 | ARGPAR_HIDDEN | |
310 | const char *argpar_error_unknown_opt_name( | |
311 | const struct argpar_error * const error) | |
312 | { | |
313 | ARGPAR_ASSERT(error); | |
314 | ARGPAR_ASSERT(error->unknown_opt_name); | |
315 | return error->unknown_opt_name; | |
316 | } | |
317 | ||
318 | ARGPAR_HIDDEN | |
319 | const struct argpar_opt_descr *argpar_error_opt_descr( | |
320 | const struct argpar_error * const error, bool * const is_short) | |
321 | { | |
322 | ARGPAR_ASSERT(error); | |
323 | ARGPAR_ASSERT(error->opt_descr); | |
324 | ||
325 | if (is_short) { | |
326 | *is_short = error->is_short; | |
327 | } | |
328 | ||
329 | return error->opt_descr; | |
330 | } | |
331 | ||
332 | ARGPAR_HIDDEN | |
333 | void argpar_error_destroy(const struct argpar_error * const error) | |
334 | { | |
335 | if (error) { | |
336 | free(error->unknown_opt_name); | |
337 | free((void *) error); | |
338 | } | |
339 | } | |
340 | ||
903a5b8a | 341 | static |
1c9a6bde SM |
342 | const struct argpar_opt_descr *find_descr( |
343 | const struct argpar_opt_descr * const descrs, | |
903a5b8a SM |
344 | const char short_name, const char * const long_name) |
345 | { | |
1c9a6bde | 346 | const struct argpar_opt_descr *descr; |
903a5b8a SM |
347 | |
348 | for (descr = descrs; descr->short_name || descr->long_name; descr++) { | |
349 | if (short_name && descr->short_name && | |
350 | short_name == descr->short_name) { | |
351 | goto end; | |
352 | } | |
353 | ||
354 | if (long_name && descr->long_name && | |
355 | strcmp(long_name, descr->long_name) == 0) { | |
356 | goto end; | |
357 | } | |
358 | } | |
359 | ||
360 | end: | |
361 | return !descr->short_name && !descr->long_name ? NULL : descr; | |
362 | } | |
363 | ||
364 | enum parse_orig_arg_opt_ret { | |
365 | PARSE_ORIG_ARG_OPT_RET_OK, | |
871eba32 PP |
366 | PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT = -1, |
367 | PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG = -2, | |
871eba32 PP |
368 | PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG = -4, |
369 | PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY = -5, | |
903a5b8a SM |
370 | }; |
371 | ||
372 | static | |
d7a82d7f PP |
373 | enum parse_orig_arg_opt_ret parse_short_opt_group( |
374 | const char * const short_opt_group, | |
903a5b8a | 375 | const char * const next_orig_arg, |
1c9a6bde | 376 | const struct argpar_opt_descr * const descrs, |
fc07e526 | 377 | struct argpar_iter * const iter, |
8b95d883 PP |
378 | struct argpar_error ** const error, |
379 | struct argpar_item ** const item) | |
903a5b8a SM |
380 | { |
381 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; | |
fc07e526 SM |
382 | bool used_next_orig_arg = false; |
383 | const char *opt_arg = NULL; | |
384 | const struct argpar_opt_descr *descr; | |
385 | struct argpar_item_opt *opt_item; | |
903a5b8a | 386 | |
d7a82d7f | 387 | ARGPAR_ASSERT(strlen(short_opt_group) != 0); |
903a5b8a | 388 | |
d7a82d7f PP |
389 | if (!iter->short_opt_group_ch) { |
390 | iter->short_opt_group_ch = short_opt_group; | |
fc07e526 | 391 | } |
903a5b8a | 392 | |
fc07e526 | 393 | /* Find corresponding option descriptor */ |
d7a82d7f | 394 | descr = find_descr(descrs, *iter->short_opt_group_ch, NULL); |
fc07e526 | 395 | if (!descr) { |
8b95d883 PP |
396 | const char unknown_opt_name[] = |
397 | {*iter->short_opt_group_ch, '\0'}; | |
398 | ||
871eba32 | 399 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
8b95d883 PP |
400 | |
401 | if (set_error(error, unknown_opt_name, NULL, true)) { | |
402 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
403 | } | |
404 | ||
fc07e526 SM |
405 | goto error; |
406 | } | |
903a5b8a | 407 | |
fc07e526 | 408 | if (descr->with_arg) { |
d7a82d7f | 409 | if (iter->short_opt_group_ch[1]) { |
fc07e526 | 410 | /* `-oarg` form */ |
d7a82d7f | 411 | opt_arg = &iter->short_opt_group_ch[1]; |
fc07e526 SM |
412 | } else { |
413 | /* `-o arg` form */ | |
414 | opt_arg = next_orig_arg; | |
415 | used_next_orig_arg = true; | |
903a5b8a SM |
416 | } |
417 | ||
fc07e526 SM |
418 | /* |
419 | * We accept `-o ''` (empty option argument), but not | |
420 | * `-o` alone if an option argument is expected. | |
421 | */ | |
d7a82d7f | 422 | if (!opt_arg || (iter->short_opt_group_ch[1] && |
fb12ac67 | 423 | strlen(opt_arg) == 0)) { |
871eba32 | 424 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG; |
8b95d883 PP |
425 | |
426 | if (set_error(error, NULL, descr, true)) { | |
427 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
428 | } | |
429 | ||
903a5b8a SM |
430 | goto error; |
431 | } | |
fc07e526 | 432 | } |
903a5b8a | 433 | |
fc07e526 SM |
434 | /* Create and append option argument */ |
435 | opt_item = create_opt_item(descr, opt_arg); | |
436 | if (!opt_item) { | |
871eba32 | 437 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; |
fc07e526 SM |
438 | goto error; |
439 | } | |
903a5b8a | 440 | |
fc07e526 | 441 | *item = &opt_item->base; |
d7a82d7f | 442 | iter->short_opt_group_ch++; |
903a5b8a | 443 | |
d7a82d7f | 444 | if (descr->with_arg || !*iter->short_opt_group_ch) { |
fc07e526 | 445 | /* Option has an argument: no more options */ |
d7a82d7f | 446 | iter->short_opt_group_ch = NULL; |
fc07e526 SM |
447 | |
448 | if (used_next_orig_arg) { | |
449 | iter->i += 2; | |
450 | } else { | |
451 | iter->i++; | |
452 | } | |
903a5b8a SM |
453 | } |
454 | ||
455 | goto end; | |
456 | ||
457 | error: | |
871eba32 | 458 | ARGPAR_ASSERT(ret != PARSE_ORIG_ARG_OPT_RET_OK); |
903a5b8a SM |
459 | |
460 | end: | |
461 | return ret; | |
462 | } | |
463 | ||
464 | static | |
465 | enum parse_orig_arg_opt_ret parse_long_opt(const char * const long_opt_arg, | |
466 | const char * const next_orig_arg, | |
1c9a6bde | 467 | const struct argpar_opt_descr * const descrs, |
fc07e526 | 468 | struct argpar_iter * const iter, |
8b95d883 PP |
469 | struct argpar_error ** const error, |
470 | struct argpar_item ** const item) | |
903a5b8a | 471 | { |
903a5b8a | 472 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; |
1c9a6bde SM |
473 | const struct argpar_opt_descr *descr; |
474 | struct argpar_item_opt *opt_item; | |
fc07e526 | 475 | bool used_next_orig_arg = false; |
903a5b8a SM |
476 | |
477 | /* Option's argument, if any */ | |
478 | const char *opt_arg = NULL; | |
479 | ||
480 | /* Position of first `=`, if any */ | |
481 | const char *eq_pos; | |
482 | ||
903a5b8a SM |
483 | /* Option name */ |
484 | const char *long_opt_name = long_opt_arg; | |
485 | ||
dd757a65 | 486 | ARGPAR_ASSERT(strlen(long_opt_arg) != 0); |
903a5b8a SM |
487 | |
488 | /* Find the first `=` in original argument */ | |
489 | eq_pos = strchr(long_opt_arg, '='); | |
490 | if (eq_pos) { | |
491 | const size_t long_opt_name_size = eq_pos - long_opt_arg; | |
492 | ||
493 | /* Isolate the option name */ | |
d1f7bbdb PP |
494 | while (long_opt_name_size > iter->tmp_buf.size - 1) { |
495 | iter->tmp_buf.size *= 2; | |
496 | iter->tmp_buf.data = ARGPAR_REALLOC(iter->tmp_buf.data, | |
497 | char, iter->tmp_buf.size); | |
498 | if (!iter->tmp_buf.data) { | |
499 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
500 | goto error; | |
501 | } | |
903a5b8a SM |
502 | } |
503 | ||
d1f7bbdb PP |
504 | memcpy(iter->tmp_buf.data, long_opt_arg, long_opt_name_size); |
505 | iter->tmp_buf.data[long_opt_name_size] = '\0'; | |
506 | long_opt_name = iter->tmp_buf.data; | |
903a5b8a SM |
507 | } |
508 | ||
509 | /* Find corresponding option descriptor */ | |
510 | descr = find_descr(descrs, '\0', long_opt_name); | |
511 | if (!descr) { | |
903a5b8a | 512 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
8b95d883 PP |
513 | |
514 | if (set_error(error, long_opt_name, NULL, false)) { | |
515 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
516 | } | |
517 | ||
903a5b8a SM |
518 | goto error; |
519 | } | |
520 | ||
521 | /* Find option's argument if any */ | |
522 | if (descr->with_arg) { | |
523 | if (eq_pos) { | |
524 | /* `--long-opt=arg` style */ | |
525 | opt_arg = eq_pos + 1; | |
526 | } else { | |
527 | /* `--long-opt arg` style */ | |
528 | if (!next_orig_arg) { | |
871eba32 | 529 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG; |
8b95d883 PP |
530 | |
531 | if (set_error(error, NULL, descr, false)) { | |
532 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
533 | } | |
534 | ||
903a5b8a SM |
535 | goto error; |
536 | } | |
537 | ||
538 | opt_arg = next_orig_arg; | |
fc07e526 | 539 | used_next_orig_arg = true; |
903a5b8a | 540 | } |
430fe886 SM |
541 | } else if (eq_pos) { |
542 | /* | |
543 | * Unexpected `--opt=arg` style for a long option which | |
544 | * doesn't accept an argument. | |
545 | */ | |
871eba32 | 546 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG; |
8b95d883 PP |
547 | |
548 | if (set_error(error, NULL, descr, false)) { | |
549 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY; | |
550 | } | |
551 | ||
430fe886 | 552 | goto error; |
903a5b8a SM |
553 | } |
554 | ||
555 | /* Create and append option argument */ | |
556 | opt_item = create_opt_item(descr, opt_arg); | |
557 | if (!opt_item) { | |
558 | goto error; | |
559 | } | |
560 | ||
fc07e526 SM |
561 | if (used_next_orig_arg) { |
562 | iter->i += 2; | |
563 | } else { | |
564 | iter->i++; | |
7ac57709 SM |
565 | } |
566 | ||
fc07e526 | 567 | *item = &opt_item->base; |
903a5b8a SM |
568 | goto end; |
569 | ||
570 | error: | |
871eba32 | 571 | ARGPAR_ASSERT(ret != PARSE_ORIG_ARG_OPT_RET_OK); |
903a5b8a SM |
572 | |
573 | end: | |
574 | return ret; | |
575 | } | |
576 | ||
577 | static | |
578 | enum parse_orig_arg_opt_ret parse_orig_arg_opt(const char * const orig_arg, | |
579 | const char * const next_orig_arg, | |
1c9a6bde | 580 | const struct argpar_opt_descr * const descrs, |
8b95d883 PP |
581 | struct argpar_iter * const iter, |
582 | struct argpar_error ** const error, | |
fc07e526 | 583 | struct argpar_item ** const item) |
903a5b8a SM |
584 | { |
585 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; | |
586 | ||
7ac57709 | 587 | ARGPAR_ASSERT(orig_arg[0] == '-'); |
903a5b8a SM |
588 | |
589 | if (orig_arg[1] == '-') { | |
590 | /* Long option */ | |
591 | ret = parse_long_opt(&orig_arg[2], | |
fc07e526 | 592 | next_orig_arg, descrs, iter, error, item); |
903a5b8a SM |
593 | } else { |
594 | /* Short option */ | |
d7a82d7f | 595 | ret = parse_short_opt_group(&orig_arg[1], |
fc07e526 | 596 | next_orig_arg, descrs, iter, error, item); |
903a5b8a SM |
597 | } |
598 | ||
599 | return ret; | |
600 | } | |
601 | ||
7ac57709 | 602 | ARGPAR_HIDDEN |
fc07e526 SM |
603 | struct argpar_iter *argpar_iter_create(const unsigned int argc, |
604 | const char * const * const argv, | |
605 | const struct argpar_opt_descr * const descrs) | |
903a5b8a | 606 | { |
d1f7bbdb | 607 | struct argpar_iter *iter = ARGPAR_ZALLOC(struct argpar_iter); |
903a5b8a | 608 | |
fc07e526 SM |
609 | if (!iter) { |
610 | goto end; | |
903a5b8a SM |
611 | } |
612 | ||
fc07e526 SM |
613 | iter->argc = argc; |
614 | iter->argv = argv; | |
615 | iter->descrs = descrs; | |
d1f7bbdb PP |
616 | iter->tmp_buf.size = 128; |
617 | iter->tmp_buf.data = ARGPAR_CALLOC(char, iter->tmp_buf.size); | |
618 | if (!iter->tmp_buf.data) { | |
619 | argpar_iter_destroy(iter); | |
620 | iter = NULL; | |
621 | goto end; | |
622 | } | |
903a5b8a | 623 | |
fc07e526 SM |
624 | end: |
625 | return iter; | |
626 | } | |
903a5b8a | 627 | |
fc07e526 SM |
628 | ARGPAR_HIDDEN |
629 | void argpar_iter_destroy(struct argpar_iter * const iter) | |
630 | { | |
d1f7bbdb PP |
631 | if (iter) { |
632 | free(iter->tmp_buf.data); | |
633 | free(iter); | |
634 | } | |
fc07e526 | 635 | } |
903a5b8a | 636 | |
fc07e526 | 637 | ARGPAR_HIDDEN |
2af370d0 | 638 | enum argpar_iter_next_status argpar_iter_next( |
fc07e526 | 639 | struct argpar_iter * const iter, |
8b95d883 PP |
640 | const struct argpar_item ** const item, |
641 | const struct argpar_error ** const error) | |
fc07e526 | 642 | { |
2af370d0 | 643 | enum argpar_iter_next_status status; |
fc07e526 SM |
644 | enum parse_orig_arg_opt_ret parse_orig_arg_opt_ret; |
645 | const char *orig_arg; | |
646 | const char *next_orig_arg; | |
8b95d883 | 647 | struct argpar_error ** const nc_error = (struct argpar_error **) error; |
7ac57709 | 648 | |
fc07e526 | 649 | ARGPAR_ASSERT(iter->i <= iter->argc); |
37bb2b1f PP |
650 | |
651 | if (error) { | |
8b95d883 | 652 | *nc_error = NULL; |
37bb2b1f | 653 | } |
fc07e526 SM |
654 | |
655 | if (iter->i == iter->argc) { | |
2af370d0 | 656 | status = ARGPAR_ITER_NEXT_STATUS_END; |
fc07e526 SM |
657 | goto end; |
658 | } | |
7ac57709 | 659 | |
fc07e526 SM |
660 | orig_arg = iter->argv[iter->i]; |
661 | next_orig_arg = | |
662 | iter->i < (iter->argc - 1) ? iter->argv[iter->i + 1] : NULL; | |
663 | ||
dd757a65 PP |
664 | if (strcmp(orig_arg, "-") == 0 || strcmp(orig_arg, "--") == 0 || |
665 | orig_arg[0] != '-') { | |
fc07e526 | 666 | /* Non-option argument */ |
dd757a65 | 667 | const struct argpar_item_non_opt * const non_opt_item = |
fc07e526 SM |
668 | create_non_opt_item(orig_arg, iter->i, |
669 | iter->non_opt_index); | |
670 | ||
671 | if (!non_opt_item) { | |
2af370d0 | 672 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY; |
fc07e526 | 673 | goto end; |
903a5b8a SM |
674 | } |
675 | ||
fc07e526 SM |
676 | iter->non_opt_index++; |
677 | iter->i++; | |
678 | *item = &non_opt_item->base; | |
2af370d0 | 679 | status = ARGPAR_ITER_NEXT_STATUS_OK; |
fc07e526 SM |
680 | goto end; |
681 | } | |
903a5b8a | 682 | |
fc07e526 SM |
683 | /* Option argument */ |
684 | parse_orig_arg_opt_ret = parse_orig_arg_opt(orig_arg, | |
8b95d883 | 685 | next_orig_arg, iter->descrs, iter, nc_error, |
fc07e526 SM |
686 | (struct argpar_item **) item); |
687 | switch (parse_orig_arg_opt_ret) { | |
688 | case PARSE_ORIG_ARG_OPT_RET_OK: | |
2af370d0 | 689 | status = ARGPAR_ITER_NEXT_STATUS_OK; |
fc07e526 SM |
690 | break; |
691 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT: | |
871eba32 | 692 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG: |
871eba32 | 693 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG: |
8b95d883 PP |
694 | if (error) { |
695 | ARGPAR_ASSERT(*error); | |
696 | (*nc_error)->orig_index = iter->i; | |
697 | } | |
d4d05805 PP |
698 | |
699 | switch (parse_orig_arg_opt_ret) { | |
700 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT: | |
2af370d0 | 701 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNKNOWN_OPT; |
d4d05805 PP |
702 | break; |
703 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG: | |
2af370d0 | 704 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MISSING_OPT_ARG; |
d4d05805 | 705 | break; |
d4d05805 | 706 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG: |
2af370d0 | 707 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNEXPECTED_OPT_ARG; |
d4d05805 PP |
708 | break; |
709 | default: | |
710 | abort(); | |
711 | } | |
712 | ||
713 | break; | |
714 | case PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY: | |
2af370d0 | 715 | status = ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY; |
fc07e526 SM |
716 | break; |
717 | default: | |
718 | abort(); | |
719 | } | |
720 | ||
721 | end: | |
722 | return status; | |
723 | } | |
724 | ||
725 | ARGPAR_HIDDEN | |
f3ab5ca1 | 726 | unsigned int argpar_iter_ingested_orig_args( |
fc07e526 SM |
727 | const struct argpar_iter * const iter) |
728 | { | |
729 | return iter->i; | |
730 | } |