| 1 | /* |
| 2 | * Copyright 2019 Philippe Proulx <pproulx@efficios.com> |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to deal |
| 6 | * in the Software without restriction, including without limitation the rights |
| 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | * copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 20 | * SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <assert.h> |
| 24 | #include <stdarg.h> |
| 25 | #include <stdbool.h> |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
| 29 | |
| 30 | #include "argpar.h" |
| 31 | |
| 32 | #define argpar_realloc(_ptr, _type, _nmemb) ((_type *) realloc(_ptr, (_nmemb) * sizeof(_type))) |
| 33 | #define argpar_calloc(_type, _nmemb) ((_type *) calloc((_nmemb), sizeof(_type))) |
| 34 | #define argpar_zalloc(_type) argpar_calloc(_type, 1) |
| 35 | |
| 36 | #define ARGPAR_ASSERT(_cond) assert(_cond) |
| 37 | |
| 38 | /* |
| 39 | * Structure holding the argpar state between successive argpar_state_parse_next |
| 40 | * calls. |
| 41 | * |
| 42 | * Created with `argpar_state_create` and destroyed with `argpar_state_destroy`. |
| 43 | */ |
| 44 | struct argpar_state { |
| 45 | /* |
| 46 | * Data provided by the user in argpar_state_create, does not change |
| 47 | * afterwards. |
| 48 | */ |
| 49 | unsigned int argc; |
| 50 | const char * const *argv; |
| 51 | const struct argpar_opt_descr *descrs; |
| 52 | |
| 53 | /* |
| 54 | * Index of the argument to process in the next argpar_state_parse_next |
| 55 | * call. |
| 56 | */ |
| 57 | unsigned int i; |
| 58 | |
| 59 | /* Counter of non-option arguments. */ |
| 60 | int non_opt_index; |
| 61 | |
| 62 | /* |
| 63 | * Short option state: if set, we are in the middle of a short option |
| 64 | * group, so we should resume there at the next argpar_state_parse_next |
| 65 | * call. |
| 66 | */ |
| 67 | const char *short_opt_ch; |
| 68 | }; |
| 69 | |
| 70 | static |
| 71 | char *argpar_vasprintf(const char *fmt, va_list args) |
| 72 | { |
| 73 | int len1, len2; |
| 74 | char *str; |
| 75 | va_list args2; |
| 76 | |
| 77 | va_copy(args2, args); |
| 78 | |
| 79 | len1 = vsnprintf(NULL, 0, fmt, args); |
| 80 | if (len1 < 0) { |
| 81 | str = NULL; |
| 82 | goto end; |
| 83 | } |
| 84 | |
| 85 | str = malloc(len1 + 1); |
| 86 | if (!str) { |
| 87 | goto end; |
| 88 | } |
| 89 | |
| 90 | len2 = vsnprintf(str, len1 + 1, fmt, args2); |
| 91 | |
| 92 | ARGPAR_ASSERT(len1 == len2); |
| 93 | |
| 94 | end: |
| 95 | va_end(args2); |
| 96 | return str; |
| 97 | } |
| 98 | |
| 99 | |
| 100 | static |
| 101 | char *argpar_asprintf(const char *fmt, ...) |
| 102 | { |
| 103 | va_list args; |
| 104 | char *str; |
| 105 | |
| 106 | va_start(args, fmt); |
| 107 | str = argpar_vasprintf(fmt, args); |
| 108 | va_end(args); |
| 109 | |
| 110 | return str; |
| 111 | } |
| 112 | |
| 113 | static |
| 114 | bool argpar_string_append_printf(char **str, const char *fmt, ...) |
| 115 | { |
| 116 | char *new_str = NULL; |
| 117 | char *addendum; |
| 118 | bool success; |
| 119 | va_list args; |
| 120 | |
| 121 | ARGPAR_ASSERT(str); |
| 122 | |
| 123 | va_start(args, fmt); |
| 124 | addendum = argpar_vasprintf(fmt, args); |
| 125 | va_end(args); |
| 126 | |
| 127 | if (!addendum) { |
| 128 | success = false; |
| 129 | goto end; |
| 130 | } |
| 131 | |
| 132 | new_str = argpar_asprintf("%s%s", *str ? *str : "", addendum); |
| 133 | if (!new_str) { |
| 134 | success = false; |
| 135 | goto end; |
| 136 | } |
| 137 | |
| 138 | free(*str); |
| 139 | *str = new_str; |
| 140 | |
| 141 | success = true; |
| 142 | |
| 143 | end: |
| 144 | free(addendum); |
| 145 | |
| 146 | return success; |
| 147 | } |
| 148 | |
| 149 | ARGPAR_HIDDEN |
| 150 | void argpar_item_destroy(struct argpar_item *item) |
| 151 | { |
| 152 | if (!item) { |
| 153 | goto end; |
| 154 | } |
| 155 | |
| 156 | if (item->type == ARGPAR_ITEM_TYPE_OPT) { |
| 157 | struct argpar_item_opt * const opt_item = (void *) item; |
| 158 | |
| 159 | free((void *) opt_item->arg); |
| 160 | } |
| 161 | |
| 162 | free(item); |
| 163 | |
| 164 | end: |
| 165 | return; |
| 166 | } |
| 167 | |
| 168 | static |
| 169 | bool push_item(struct argpar_item_array * const array, |
| 170 | struct argpar_item * const item) |
| 171 | { |
| 172 | bool success; |
| 173 | |
| 174 | ARGPAR_ASSERT(array); |
| 175 | ARGPAR_ASSERT(item); |
| 176 | |
| 177 | if (array->n_items == array->n_alloc) { |
| 178 | unsigned int new_n_alloc = array->n_alloc * 2; |
| 179 | struct argpar_item **new_items; |
| 180 | |
| 181 | new_items = argpar_realloc(array->items, |
| 182 | struct argpar_item *, new_n_alloc); |
| 183 | if (!new_items) { |
| 184 | success = false; |
| 185 | goto end; |
| 186 | } |
| 187 | |
| 188 | array->n_alloc = new_n_alloc; |
| 189 | array->items = new_items; |
| 190 | } |
| 191 | |
| 192 | array->items[array->n_items] = item; |
| 193 | array->n_items++; |
| 194 | |
| 195 | success = true; |
| 196 | |
| 197 | end: |
| 198 | return success; |
| 199 | } |
| 200 | |
| 201 | static |
| 202 | void destroy_item_array(struct argpar_item_array * const array) |
| 203 | { |
| 204 | if (array) { |
| 205 | unsigned int i; |
| 206 | |
| 207 | for (i = 0; i < array->n_items; i++) { |
| 208 | argpar_item_destroy(array->items[i]); |
| 209 | } |
| 210 | |
| 211 | free(array->items); |
| 212 | free(array); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | static |
| 217 | struct argpar_item_array *new_item_array(void) |
| 218 | { |
| 219 | struct argpar_item_array *ret; |
| 220 | const int initial_size = 10; |
| 221 | |
| 222 | ret = argpar_zalloc(struct argpar_item_array); |
| 223 | if (!ret) { |
| 224 | goto end; |
| 225 | } |
| 226 | |
| 227 | ret->items = argpar_calloc(struct argpar_item *, initial_size); |
| 228 | if (!ret->items) { |
| 229 | goto error; |
| 230 | } |
| 231 | |
| 232 | ret->n_alloc = initial_size; |
| 233 | |
| 234 | goto end; |
| 235 | |
| 236 | error: |
| 237 | destroy_item_array(ret); |
| 238 | ret = NULL; |
| 239 | |
| 240 | end: |
| 241 | return ret; |
| 242 | } |
| 243 | |
| 244 | static |
| 245 | struct argpar_item_opt *create_opt_item( |
| 246 | const struct argpar_opt_descr * const descr, |
| 247 | const char * const arg) |
| 248 | { |
| 249 | struct argpar_item_opt *opt_item = |
| 250 | argpar_zalloc(struct argpar_item_opt); |
| 251 | |
| 252 | if (!opt_item) { |
| 253 | goto end; |
| 254 | } |
| 255 | |
| 256 | opt_item->base.type = ARGPAR_ITEM_TYPE_OPT; |
| 257 | opt_item->descr = descr; |
| 258 | |
| 259 | if (arg) { |
| 260 | opt_item->arg = strdup(arg); |
| 261 | if (!opt_item->arg) { |
| 262 | goto error; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | goto end; |
| 267 | |
| 268 | error: |
| 269 | argpar_item_destroy(&opt_item->base); |
| 270 | opt_item = NULL; |
| 271 | |
| 272 | end: |
| 273 | return opt_item; |
| 274 | } |
| 275 | |
| 276 | static |
| 277 | struct argpar_item_non_opt *create_non_opt_item(const char * const arg, |
| 278 | const unsigned int orig_index, |
| 279 | const unsigned int non_opt_index) |
| 280 | { |
| 281 | struct argpar_item_non_opt * const non_opt_item = |
| 282 | argpar_zalloc(struct argpar_item_non_opt); |
| 283 | |
| 284 | if (!non_opt_item) { |
| 285 | goto end; |
| 286 | } |
| 287 | |
| 288 | non_opt_item->base.type = ARGPAR_ITEM_TYPE_NON_OPT; |
| 289 | non_opt_item->arg = arg; |
| 290 | non_opt_item->orig_index = orig_index; |
| 291 | non_opt_item->non_opt_index = non_opt_index; |
| 292 | |
| 293 | end: |
| 294 | return non_opt_item; |
| 295 | } |
| 296 | |
| 297 | static |
| 298 | const struct argpar_opt_descr *find_descr( |
| 299 | const struct argpar_opt_descr * const descrs, |
| 300 | const char short_name, const char * const long_name) |
| 301 | { |
| 302 | const struct argpar_opt_descr *descr; |
| 303 | |
| 304 | for (descr = descrs; descr->short_name || descr->long_name; descr++) { |
| 305 | if (short_name && descr->short_name && |
| 306 | short_name == descr->short_name) { |
| 307 | goto end; |
| 308 | } |
| 309 | |
| 310 | if (long_name && descr->long_name && |
| 311 | strcmp(long_name, descr->long_name) == 0) { |
| 312 | goto end; |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | end: |
| 317 | return !descr->short_name && !descr->long_name ? NULL : descr; |
| 318 | } |
| 319 | |
| 320 | enum parse_orig_arg_opt_ret { |
| 321 | PARSE_ORIG_ARG_OPT_RET_OK, |
| 322 | PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT = -2, |
| 323 | PARSE_ORIG_ARG_OPT_RET_ERROR = -1, |
| 324 | }; |
| 325 | |
| 326 | static |
| 327 | enum parse_orig_arg_opt_ret parse_short_opts(const char * const short_opts, |
| 328 | const char * const next_orig_arg, |
| 329 | const struct argpar_opt_descr * const descrs, |
| 330 | struct argpar_state *state, |
| 331 | char **error, |
| 332 | struct argpar_item **item) |
| 333 | { |
| 334 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; |
| 335 | bool used_next_orig_arg = false; |
| 336 | |
| 337 | if (strlen(short_opts) == 0) { |
| 338 | argpar_string_append_printf(error, "Invalid argument"); |
| 339 | goto error; |
| 340 | } |
| 341 | |
| 342 | if (!state->short_opt_ch) { |
| 343 | state->short_opt_ch = short_opts; |
| 344 | } |
| 345 | |
| 346 | const char *opt_arg = NULL; |
| 347 | const struct argpar_opt_descr *descr; |
| 348 | struct argpar_item_opt *opt_item; |
| 349 | |
| 350 | /* Find corresponding option descriptor */ |
| 351 | descr = find_descr(descrs, *state->short_opt_ch, NULL); |
| 352 | if (!descr) { |
| 353 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
| 354 | argpar_string_append_printf(error, |
| 355 | "Unknown option `-%c`", *state->short_opt_ch); |
| 356 | goto error; |
| 357 | } |
| 358 | |
| 359 | if (descr->with_arg) { |
| 360 | if (state->short_opt_ch[1]) { |
| 361 | /* `-oarg` form */ |
| 362 | opt_arg = &state->short_opt_ch[1]; |
| 363 | } else { |
| 364 | /* `-o arg` form */ |
| 365 | opt_arg = next_orig_arg; |
| 366 | used_next_orig_arg = true; |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * We accept `-o ''` (empty option's argument), |
| 371 | * but not `-o` alone if an option's argument is |
| 372 | * expected. |
| 373 | */ |
| 374 | if (!opt_arg || (state->short_opt_ch[1] && strlen(opt_arg) == 0)) { |
| 375 | argpar_string_append_printf(error, |
| 376 | "Missing required argument for option `-%c`", |
| 377 | *state->short_opt_ch); |
| 378 | used_next_orig_arg = false; |
| 379 | goto error; |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | /* Create and append option argument */ |
| 384 | opt_item = create_opt_item(descr, opt_arg); |
| 385 | if (!opt_item) { |
| 386 | goto error; |
| 387 | } |
| 388 | |
| 389 | *item = &opt_item->base; |
| 390 | |
| 391 | state->short_opt_ch++; |
| 392 | |
| 393 | if (descr->with_arg || !*state->short_opt_ch) { |
| 394 | /* Option has an argument: no more options */ |
| 395 | state->short_opt_ch = NULL; |
| 396 | |
| 397 | if (used_next_orig_arg) { |
| 398 | state->i += 2; |
| 399 | } else { |
| 400 | state->i += 1; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | goto end; |
| 405 | |
| 406 | error: |
| 407 | if (ret == PARSE_ORIG_ARG_OPT_RET_OK) { |
| 408 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR; |
| 409 | } |
| 410 | |
| 411 | end: |
| 412 | return ret; |
| 413 | } |
| 414 | |
| 415 | static |
| 416 | enum parse_orig_arg_opt_ret parse_long_opt(const char * const long_opt_arg, |
| 417 | const char * const next_orig_arg, |
| 418 | const struct argpar_opt_descr * const descrs, |
| 419 | struct argpar_state *state, |
| 420 | char **error, |
| 421 | struct argpar_item **item) |
| 422 | { |
| 423 | const size_t max_len = 127; |
| 424 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; |
| 425 | const struct argpar_opt_descr *descr; |
| 426 | struct argpar_item_opt *opt_item; |
| 427 | bool used_next_orig_arg = false; |
| 428 | |
| 429 | /* Option's argument, if any */ |
| 430 | const char *opt_arg = NULL; |
| 431 | |
| 432 | /* Position of first `=`, if any */ |
| 433 | const char *eq_pos; |
| 434 | |
| 435 | /* Buffer holding option name when `long_opt_arg` contains `=` */ |
| 436 | char buf[max_len + 1]; |
| 437 | |
| 438 | /* Option name */ |
| 439 | const char *long_opt_name = long_opt_arg; |
| 440 | |
| 441 | if (strlen(long_opt_arg) == 0) { |
| 442 | argpar_string_append_printf(error, |
| 443 | "Invalid argument"); |
| 444 | goto error; |
| 445 | } |
| 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 */ |
| 453 | if (long_opt_name_size > max_len) { |
| 454 | argpar_string_append_printf(error, |
| 455 | "Invalid argument `--%s`", long_opt_arg); |
| 456 | goto error; |
| 457 | } |
| 458 | |
| 459 | memcpy(buf, long_opt_arg, long_opt_name_size); |
| 460 | buf[long_opt_name_size] = '\0'; |
| 461 | long_opt_name = buf; |
| 462 | } |
| 463 | |
| 464 | /* Find corresponding option descriptor */ |
| 465 | descr = find_descr(descrs, '\0', long_opt_name); |
| 466 | if (!descr) { |
| 467 | argpar_string_append_printf(error, |
| 468 | "Unknown option `--%s`", long_opt_name); |
| 469 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT; |
| 470 | goto error; |
| 471 | } |
| 472 | |
| 473 | /* Find option's argument if any */ |
| 474 | if (descr->with_arg) { |
| 475 | if (eq_pos) { |
| 476 | /* `--long-opt=arg` style */ |
| 477 | opt_arg = eq_pos + 1; |
| 478 | } else { |
| 479 | /* `--long-opt arg` style */ |
| 480 | if (!next_orig_arg) { |
| 481 | argpar_string_append_printf(error, |
| 482 | "Missing required argument for option `--%s`", |
| 483 | long_opt_name); |
| 484 | goto error; |
| 485 | } |
| 486 | |
| 487 | opt_arg = next_orig_arg; |
| 488 | used_next_orig_arg = true; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | /* Create and append option argument */ |
| 493 | opt_item = create_opt_item(descr, opt_arg); |
| 494 | if (!opt_item) { |
| 495 | goto error; |
| 496 | } |
| 497 | |
| 498 | if (used_next_orig_arg) { |
| 499 | state->i += 2; |
| 500 | } else { |
| 501 | state->i += 1; |
| 502 | } |
| 503 | |
| 504 | *item = &opt_item->base; |
| 505 | goto end; |
| 506 | |
| 507 | error: |
| 508 | if (ret == PARSE_ORIG_ARG_OPT_RET_OK) { |
| 509 | ret = PARSE_ORIG_ARG_OPT_RET_ERROR; |
| 510 | } |
| 511 | |
| 512 | end: |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | static |
| 517 | enum parse_orig_arg_opt_ret parse_orig_arg_opt(const char * const orig_arg, |
| 518 | const char * const next_orig_arg, |
| 519 | const struct argpar_opt_descr * const descrs, |
| 520 | struct argpar_state *state, |
| 521 | char **error, |
| 522 | struct argpar_item **item) |
| 523 | { |
| 524 | enum parse_orig_arg_opt_ret ret = PARSE_ORIG_ARG_OPT_RET_OK; |
| 525 | |
| 526 | ARGPAR_ASSERT(orig_arg[0] == '-'); |
| 527 | |
| 528 | if (orig_arg[1] == '-') { |
| 529 | /* Long option */ |
| 530 | ret = parse_long_opt(&orig_arg[2], |
| 531 | next_orig_arg, descrs, state, error, item); |
| 532 | } else { |
| 533 | /* Short option */ |
| 534 | ret = parse_short_opts(&orig_arg[1], |
| 535 | next_orig_arg, descrs, state, error, item); |
| 536 | } |
| 537 | |
| 538 | return ret; |
| 539 | } |
| 540 | |
| 541 | static |
| 542 | bool prepend_while_parsing_arg_to_error(char **error, |
| 543 | const unsigned int i, const char * const arg) |
| 544 | { |
| 545 | char *new_error; |
| 546 | bool success; |
| 547 | |
| 548 | ARGPAR_ASSERT(error); |
| 549 | ARGPAR_ASSERT(*error); |
| 550 | |
| 551 | new_error = argpar_asprintf("While parsing argument #%u (`%s`): %s", |
| 552 | i + 1, arg, *error); |
| 553 | if (!new_error) { |
| 554 | success = false; |
| 555 | goto end; |
| 556 | } |
| 557 | |
| 558 | free(*error); |
| 559 | *error = new_error; |
| 560 | success = true; |
| 561 | |
| 562 | end: |
| 563 | return success; |
| 564 | } |
| 565 | |
| 566 | ARGPAR_HIDDEN |
| 567 | struct argpar_state *argpar_state_create( |
| 568 | unsigned int argc, |
| 569 | const char * const *argv, |
| 570 | const struct argpar_opt_descr * const descrs) |
| 571 | { |
| 572 | struct argpar_state *state; |
| 573 | |
| 574 | state = argpar_zalloc(struct argpar_state); |
| 575 | if (!state) { |
| 576 | goto end; |
| 577 | } |
| 578 | |
| 579 | state->argc = argc; |
| 580 | state->argv = argv; |
| 581 | state->descrs = descrs; |
| 582 | |
| 583 | end: |
| 584 | return state; |
| 585 | } |
| 586 | |
| 587 | ARGPAR_HIDDEN |
| 588 | void argpar_state_destroy(struct argpar_state *state) |
| 589 | { |
| 590 | free(state); |
| 591 | } |
| 592 | |
| 593 | ARGPAR_HIDDEN |
| 594 | enum argpar_state_parse_next_status argpar_state_parse_next( |
| 595 | struct argpar_state *state, |
| 596 | struct argpar_item **item, |
| 597 | char **error) |
| 598 | { |
| 599 | enum argpar_state_parse_next_status status; |
| 600 | |
| 601 | ARGPAR_ASSERT(state->i <= state->argc); |
| 602 | |
| 603 | *error = NULL; |
| 604 | |
| 605 | if (state->i == state->argc) { |
| 606 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_END; |
| 607 | goto end; |
| 608 | } |
| 609 | |
| 610 | enum parse_orig_arg_opt_ret parse_orig_arg_opt_ret; |
| 611 | const char * const orig_arg = state->argv[state->i]; |
| 612 | const char * const next_orig_arg = |
| 613 | state->i < (state->argc - 1) ? state->argv[state->i + 1] : NULL; |
| 614 | |
| 615 | if (orig_arg[0] != '-') { |
| 616 | /* Non-option argument */ |
| 617 | struct argpar_item_non_opt *non_opt_item = |
| 618 | create_non_opt_item(orig_arg, state->i, state->non_opt_index); |
| 619 | |
| 620 | if (!non_opt_item) { |
| 621 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR; |
| 622 | goto end; |
| 623 | } |
| 624 | |
| 625 | state->non_opt_index++; |
| 626 | state->i++; |
| 627 | |
| 628 | *item = &non_opt_item->base; |
| 629 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_OK; |
| 630 | goto end; |
| 631 | } |
| 632 | |
| 633 | /* Option argument */ |
| 634 | parse_orig_arg_opt_ret = parse_orig_arg_opt(orig_arg, |
| 635 | next_orig_arg, state->descrs, state, error, item); |
| 636 | switch (parse_orig_arg_opt_ret) { |
| 637 | case PARSE_ORIG_ARG_OPT_RET_OK: |
| 638 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_OK; |
| 639 | break; |
| 640 | case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT: |
| 641 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT; |
| 642 | break;; |
| 643 | case PARSE_ORIG_ARG_OPT_RET_ERROR: |
| 644 | prepend_while_parsing_arg_to_error( |
| 645 | error, state->i, orig_arg); |
| 646 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR; |
| 647 | break; |
| 648 | default: |
| 649 | abort(); |
| 650 | } |
| 651 | |
| 652 | end: |
| 653 | return status; |
| 654 | } |
| 655 | |
| 656 | ARGPAR_HIDDEN |
| 657 | int argpar_state_get_ingested_orig_args(struct argpar_state *state) |
| 658 | { |
| 659 | return state->i; |
| 660 | } |
| 661 | |
| 662 | ARGPAR_HIDDEN |
| 663 | struct argpar_parse_ret argpar_parse(unsigned int argc, |
| 664 | const char * const *argv, |
| 665 | const struct argpar_opt_descr * const descrs, |
| 666 | bool fail_on_unknown_opt) |
| 667 | { |
| 668 | struct argpar_parse_ret parse_ret = { 0 }; |
| 669 | struct argpar_item *item = NULL; |
| 670 | struct argpar_state *state = NULL; |
| 671 | |
| 672 | parse_ret.items = new_item_array(); |
| 673 | if (!parse_ret.items) { |
| 674 | parse_ret.error = strdup("Failed to create items array."); |
| 675 | ARGPAR_ASSERT(parse_ret.error); |
| 676 | goto error; |
| 677 | } |
| 678 | |
| 679 | state = argpar_state_create(argc, argv, descrs); |
| 680 | if (!state) { |
| 681 | parse_ret.error = strdup("Failed to create argpar state."); |
| 682 | ARGPAR_ASSERT(parse_ret.error); |
| 683 | goto error; |
| 684 | } |
| 685 | |
| 686 | while (true) { |
| 687 | enum argpar_state_parse_next_status status; |
| 688 | |
| 689 | status = argpar_state_parse_next(state, &item, &parse_ret.error); |
| 690 | if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR) { |
| 691 | goto error; |
| 692 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_END) { |
| 693 | break; |
| 694 | } else if (status == ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR_UNKNOWN_OPT) { |
| 695 | if (fail_on_unknown_opt) { |
| 696 | parse_ret.ingested_orig_args = |
| 697 | argpar_state_get_ingested_orig_args(state); |
| 698 | prepend_while_parsing_arg_to_error( |
| 699 | &parse_ret.error, parse_ret.ingested_orig_args, |
| 700 | argv[parse_ret.ingested_orig_args]); |
| 701 | status = ARGPAR_STATE_PARSE_NEXT_STATUS_ERROR; |
| 702 | goto error; |
| 703 | } |
| 704 | |
| 705 | free(parse_ret.error); |
| 706 | parse_ret.error = NULL; |
| 707 | break; |
| 708 | } |
| 709 | |
| 710 | ARGPAR_ASSERT(status == ARGPAR_STATE_PARSE_NEXT_STATUS_OK); |
| 711 | |
| 712 | if (!push_item(parse_ret.items, item)) { |
| 713 | goto error; |
| 714 | } |
| 715 | item = NULL; |
| 716 | } |
| 717 | |
| 718 | ARGPAR_ASSERT(!parse_ret.error); |
| 719 | parse_ret.ingested_orig_args = |
| 720 | argpar_state_get_ingested_orig_args(state); |
| 721 | goto end; |
| 722 | |
| 723 | error: |
| 724 | ARGPAR_ASSERT(parse_ret.error); |
| 725 | |
| 726 | /* That's how we indicate that an error occured */ |
| 727 | destroy_item_array(parse_ret.items); |
| 728 | parse_ret.items = NULL; |
| 729 | |
| 730 | end: |
| 731 | argpar_state_destroy(state); |
| 732 | argpar_item_destroy(item); |
| 733 | return parse_ret; |
| 734 | } |
| 735 | |
| 736 | ARGPAR_HIDDEN |
| 737 | void argpar_parse_ret_fini(struct argpar_parse_ret *ret) |
| 738 | { |
| 739 | ARGPAR_ASSERT(ret); |
| 740 | |
| 741 | destroy_item_array(ret->items); |
| 742 | ret->items = NULL; |
| 743 | |
| 744 | free(ret->error); |
| 745 | ret->error = NULL; |
| 746 | } |