| 1 | /* Copyright (C) 2010-2020 The RetroArch team |
| 2 | * |
| 3 | * --------------------------------------------------------------------------------------- |
| 4 | * The following license statement only applies to this file (config_file.c). |
| 5 | * --------------------------------------------------------------------------------------- |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, |
| 8 | * to any person obtaining a copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation the rights to |
| 10 | * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
| 16 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 19 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
| 25 | #include <stdio.h> |
| 26 | #include <ctype.h> |
| 27 | #include <errno.h> |
| 28 | |
| 29 | #include <retro_miscellaneous.h> |
| 30 | #include <compat/strl.h> |
| 31 | #include <compat/posix_string.h> |
| 32 | #include <compat/fopen_utf8.h> |
| 33 | #include <compat/msvc.h> |
| 34 | #include <file/config_file.h> |
| 35 | #include <file/file_path.h> |
| 36 | #include <string/stdstring.h> |
| 37 | #include <streams/file_stream.h> |
| 38 | #include <array/rhmap.h> |
| 39 | |
| 40 | #define MAX_INCLUDE_DEPTH 16 |
| 41 | |
| 42 | struct config_include_list |
| 43 | { |
| 44 | char *path; |
| 45 | struct config_include_list *next; |
| 46 | }; |
| 47 | |
| 48 | /* Forward declaration */ |
| 49 | static bool config_file_parse_line(config_file_t *conf, |
| 50 | struct config_entry_list *list, char *line, config_file_cb_t *cb); |
| 51 | |
| 52 | static int config_file_sort_compare_func(struct config_entry_list *a, |
| 53 | struct config_entry_list *b) |
| 54 | { |
| 55 | if (a && b) |
| 56 | { |
| 57 | if (a->key) |
| 58 | { |
| 59 | if (b->key) |
| 60 | return strcasecmp(a->key, b->key); |
| 61 | return 1; |
| 62 | } |
| 63 | else if (b->key) |
| 64 | return -1; |
| 65 | } |
| 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | /* https://stackoverflow.com/questions/7685/merge-sort-a-linked-list */ |
| 71 | static struct config_entry_list* config_file_merge_sort_linked_list( |
| 72 | struct config_entry_list *list, int (*compare)( |
| 73 | struct config_entry_list *one,struct config_entry_list *two)) |
| 74 | { |
| 75 | struct config_entry_list |
| 76 | *right = list, |
| 77 | *temp = list, |
| 78 | *last = list, |
| 79 | *result = 0, |
| 80 | *next = 0, |
| 81 | *tail = 0; |
| 82 | |
| 83 | /* Trivial case. */ |
| 84 | if (!list || !list->next) |
| 85 | return list; |
| 86 | |
| 87 | /* Find halfway through the list (by running two pointers, |
| 88 | * one at twice the speed of the other). */ |
| 89 | while (temp && temp->next) |
| 90 | { |
| 91 | last = right; |
| 92 | right = right->next; |
| 93 | temp = temp->next->next; |
| 94 | } |
| 95 | |
| 96 | /* Break the list in two. (prev pointers are broken here, |
| 97 | * but we fix later) */ |
| 98 | last->next = 0; |
| 99 | |
| 100 | /* Recurse on the two smaller lists: */ |
| 101 | list = config_file_merge_sort_linked_list(list, compare); |
| 102 | right = config_file_merge_sort_linked_list(right, compare); |
| 103 | |
| 104 | /* Merge: */ |
| 105 | while (list || right) |
| 106 | { |
| 107 | /* Take from empty lists, or compare: */ |
| 108 | if (!right) |
| 109 | { |
| 110 | next = list; |
| 111 | list = list->next; |
| 112 | } |
| 113 | else if (!list) |
| 114 | { |
| 115 | next = right; |
| 116 | right = right->next; |
| 117 | } |
| 118 | else if (compare(list, right) < 0) |
| 119 | { |
| 120 | next = list; |
| 121 | list = list->next; |
| 122 | } |
| 123 | else |
| 124 | { |
| 125 | next = right; |
| 126 | right = right->next; |
| 127 | } |
| 128 | |
| 129 | if (!result) |
| 130 | result = next; |
| 131 | else |
| 132 | tail->next = next; |
| 133 | |
| 134 | tail = next; |
| 135 | } |
| 136 | |
| 137 | return result; |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * config_file_strip_comment: |
| 142 | * |
| 143 | * Searches input string for a comment ('#') entry |
| 144 | * > If first character is '#', then entire line is |
| 145 | * a comment and may correspond to a directive |
| 146 | * (command action - e.g. include sub-config file). |
| 147 | * In this case, 'str' is set to NUL and the comment |
| 148 | * itself (everything after the '#' character) is |
| 149 | * returned |
| 150 | * > If a '#' character is found inside a string literal |
| 151 | * value, then it does not correspond to a comment and |
| 152 | * is ignored. In this case, 'str' is left untouched |
| 153 | * and NULL is returned |
| 154 | * > If a '#' character is found anywhere else, then the |
| 155 | * comment text is a suffix of the input string and |
| 156 | * has no programmatic value. In this case, the comment |
| 157 | * is removed from the end of 'str' and NULL is returned |
| 158 | **/ |
| 159 | static char *config_file_strip_comment(char *str) |
| 160 | { |
| 161 | /* Search for a comment (#) character */ |
| 162 | char *comment = strchr(str, '#'); |
| 163 | |
| 164 | if (comment) |
| 165 | { |
| 166 | char *literal_start = NULL; |
| 167 | |
| 168 | /* Check whether entire line is a comment |
| 169 | * > First character == '#' */ |
| 170 | if (str == comment) |
| 171 | { |
| 172 | /* Set 'str' to NUL and return comment |
| 173 | * for processing at a higher level */ |
| 174 | *str = '\0'; |
| 175 | return ++comment; |
| 176 | } |
| 177 | |
| 178 | /* Comment character occurs at an offset: |
| 179 | * Search for the start of a string literal value */ |
| 180 | literal_start = strchr(str, '\"'); |
| 181 | |
| 182 | /* Check whether string literal start occurs |
| 183 | * *before* the comment character */ |
| 184 | if (literal_start && (literal_start < comment)) |
| 185 | { |
| 186 | /* Search for the end of the string literal |
| 187 | * value */ |
| 188 | char *literal_end = strchr(literal_start + 1, '\"'); |
| 189 | |
| 190 | /* Check whether string literal end occurs |
| 191 | * *after* the comment character |
| 192 | * > If this is the case, ignore the comment |
| 193 | * > Leave 'str' untouched and return NULL */ |
| 194 | if (literal_end && (literal_end > comment)) |
| 195 | return NULL; |
| 196 | } |
| 197 | |
| 198 | /* If we reach this point, then a comment |
| 199 | * exists outside of a string literal |
| 200 | * > Trim the entire comment from the end |
| 201 | * of 'str' */ |
| 202 | *comment = '\0'; |
| 203 | } |
| 204 | |
| 205 | return NULL; |
| 206 | } |
| 207 | |
| 208 | static char *config_file_extract_value(char *line) |
| 209 | { |
| 210 | char *dst = NULL; |
| 211 | while (ISSPACE((int)*line)) |
| 212 | line++; |
| 213 | |
| 214 | /* Note: From this point on, an empty value |
| 215 | * string is valid - and in this case, strldup("", sizeof("")) |
| 216 | * will be returned (see Note 2) |
| 217 | * > If we instead return NULL, the the entry |
| 218 | * is ignored completely - which means we cannot |
| 219 | * track *changes* in entry value */ |
| 220 | |
| 221 | /* If first character is ("), we have a full string |
| 222 | * literal */ |
| 223 | if (*line == '"') |
| 224 | { |
| 225 | size_t idx = 0; |
| 226 | char *value = NULL; |
| 227 | /* Skip to next character */ |
| 228 | line++; |
| 229 | |
| 230 | /* If this a ("), then value string is empty */ |
| 231 | if (*line != '"') |
| 232 | { |
| 233 | /* Find the next (") character */ |
| 234 | while (line[idx] && (line[idx] != '\"')) |
| 235 | idx++; |
| 236 | |
| 237 | line[idx] = '\0'; |
| 238 | if ((value = line) && *value) |
| 239 | return strdup(value); |
| 240 | } |
| 241 | } |
| 242 | /* This is not a string literal - just read |
| 243 | * until the next space is found |
| 244 | * > Note: Skip this if line is empty */ |
| 245 | else if (*line != '\0') |
| 246 | { |
| 247 | size_t idx = 0; |
| 248 | char *value = NULL; |
| 249 | /* Find next space character */ |
| 250 | while (line[idx] && isgraph((int)line[idx])) |
| 251 | idx++; |
| 252 | |
| 253 | line[idx] = '\0'; |
| 254 | if ((value = line) && *value) |
| 255 | return strdup(value); |
| 256 | } |
| 257 | |
| 258 | /* Note 2: This is an unrolled strldup call |
| 259 | * to avoid an unnecessary dependency - |
| 260 | * call is strldup("", sizeof("")) |
| 261 | **/ |
| 262 | dst = (char*)malloc(sizeof(char) * 2); |
| 263 | strlcpy(dst, "", 1); |
| 264 | return dst; |
| 265 | } |
| 266 | |
| 267 | /* Move semantics? */ |
| 268 | static void config_file_add_child_list(config_file_t *parent, |
| 269 | config_file_t *child) |
| 270 | { |
| 271 | struct config_entry_list *list = child->entries; |
| 272 | bool merge_hash_map = false; |
| 273 | |
| 274 | if (parent->entries) |
| 275 | { |
| 276 | struct config_entry_list *head = parent->entries; |
| 277 | while (head->next) |
| 278 | head = head->next; |
| 279 | |
| 280 | /* set list readonly */ |
| 281 | while (list) |
| 282 | { |
| 283 | list->readonly = true; |
| 284 | list = list->next; |
| 285 | } |
| 286 | head->next = child->entries; |
| 287 | |
| 288 | merge_hash_map = true; |
| 289 | } |
| 290 | else |
| 291 | { |
| 292 | /* set list readonly */ |
| 293 | while (list) |
| 294 | { |
| 295 | list->readonly = true; |
| 296 | list = list->next; |
| 297 | } |
| 298 | parent->entries = child->entries; |
| 299 | } |
| 300 | |
| 301 | /* Rebase tail. */ |
| 302 | if (parent->entries) |
| 303 | { |
| 304 | struct config_entry_list *head = |
| 305 | (struct config_entry_list*)parent->entries; |
| 306 | |
| 307 | while (head->next) |
| 308 | head = head->next; |
| 309 | parent->tail = head; |
| 310 | } |
| 311 | else |
| 312 | parent->tail = NULL; |
| 313 | |
| 314 | /* Update hash map */ |
| 315 | if (merge_hash_map) |
| 316 | { |
| 317 | size_t i; |
| 318 | size_t cap; |
| 319 | |
| 320 | /* We are merging two lists - if any child entry |
| 321 | * (key) is not present in the parent list, add it |
| 322 | * to the parent hash map */ |
| 323 | for (i = 0, cap = RHMAP_CAP(child->entries_map); i != cap; i++) |
| 324 | { |
| 325 | uint32_t child_hash = RHMAP_KEY(child->entries_map, i); |
| 326 | const char *child_key = RHMAP_KEY_STR(child->entries_map, i); |
| 327 | |
| 328 | if (child_hash && |
| 329 | child_key && |
| 330 | !RHMAP_HAS_FULL(parent->entries_map, child_hash, child_key)) |
| 331 | { |
| 332 | struct config_entry_list *entry = child->entries_map[i]; |
| 333 | |
| 334 | if (entry) |
| 335 | RHMAP_SET_FULL(parent->entries_map, child_hash, child_key, entry); |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | /* Child entries map is no longer required, |
| 340 | * so free it now */ |
| 341 | RHMAP_FREE(child->entries_map); |
| 342 | } |
| 343 | else |
| 344 | { |
| 345 | /* If parent list was originally empty, |
| 346 | * take map from child list */ |
| 347 | RHMAP_FREE(parent->entries_map); |
| 348 | parent->entries_map = child->entries_map; |
| 349 | child->entries_map = NULL; |
| 350 | } |
| 351 | |
| 352 | child->entries = NULL; |
| 353 | } |
| 354 | |
| 355 | static void config_file_get_realpath(char *s, size_t len, |
| 356 | char *path, const char *config_path) |
| 357 | { |
| 358 | #ifdef _WIN32 |
| 359 | if (!string_is_empty(config_path)) |
| 360 | fill_pathname_resolve_relative(s, config_path, |
| 361 | path, len); |
| 362 | #else |
| 363 | #if !defined(__PSL1GHT__) && !defined(__PS3__) |
| 364 | if (*path == '~') |
| 365 | { |
| 366 | const char *home = getenv("HOME"); |
| 367 | if (home) |
| 368 | { |
| 369 | strlcpy(s, home, len); |
| 370 | strlcat(s, path + 1, len); |
| 371 | } |
| 372 | else |
| 373 | strlcpy(s, path + 1, len); |
| 374 | } |
| 375 | else |
| 376 | #endif |
| 377 | if (!string_is_empty(config_path)) |
| 378 | fill_pathname_resolve_relative(s, config_path, path, len); |
| 379 | #endif |
| 380 | } |
| 381 | |
| 382 | static void config_file_add_sub_conf(config_file_t *conf, char *path, |
| 383 | char *real_path, size_t len, config_file_cb_t *cb) |
| 384 | { |
| 385 | struct config_include_list *head = conf->includes; |
| 386 | struct config_include_list *node = (struct config_include_list*) |
| 387 | malloc(sizeof(*node)); |
| 388 | |
| 389 | if (node) |
| 390 | { |
| 391 | node->next = NULL; |
| 392 | /* Add include list */ |
| 393 | node->path = strdup(path); |
| 394 | |
| 395 | if (head) |
| 396 | { |
| 397 | while (head->next) |
| 398 | head = head->next; |
| 399 | |
| 400 | head->next = node; |
| 401 | } |
| 402 | else |
| 403 | conf->includes = node; |
| 404 | } |
| 405 | |
| 406 | config_file_get_realpath(real_path, len, path, |
| 407 | conf->path); |
| 408 | } |
| 409 | |
| 410 | void config_file_add_reference(config_file_t *conf, char *path) |
| 411 | { |
| 412 | /* It is expected that the conf has it's path already set */ |
| 413 | char short_path[PATH_MAX_LENGTH]; |
| 414 | if (!conf->references) |
| 415 | conf->references = path_linked_list_new(); |
| 416 | fill_pathname_abbreviated_or_relative(short_path, conf->path, path, sizeof(short_path)); |
| 417 | path_linked_list_add_path(conf->references, short_path); |
| 418 | } |
| 419 | |
| 420 | static int config_file_load_internal( |
| 421 | struct config_file *conf, |
| 422 | const char *path, unsigned depth, config_file_cb_t *cb) |
| 423 | { |
| 424 | RFILE *file = NULL; |
| 425 | char *new_path = strdup(path); |
| 426 | if (!new_path) |
| 427 | return 1; |
| 428 | |
| 429 | conf->path = new_path; |
| 430 | conf->include_depth = depth; |
| 431 | |
| 432 | if (!(file = filestream_open(path, |
| 433 | RETRO_VFS_FILE_ACCESS_READ, |
| 434 | RETRO_VFS_FILE_ACCESS_HINT_NONE))) |
| 435 | { |
| 436 | free(conf->path); |
| 437 | return 1; |
| 438 | } |
| 439 | |
| 440 | while (!filestream_eof(file)) |
| 441 | { |
| 442 | char *line = NULL; |
| 443 | struct config_entry_list *list = (struct config_entry_list*) |
| 444 | malloc(sizeof(*list)); |
| 445 | |
| 446 | if (!list) |
| 447 | { |
| 448 | filestream_close(file); |
| 449 | return -1; |
| 450 | } |
| 451 | |
| 452 | list->readonly = false; |
| 453 | list->key = NULL; |
| 454 | list->value = NULL; |
| 455 | list->next = NULL; |
| 456 | |
| 457 | line = filestream_getline(file); |
| 458 | |
| 459 | if (!line) |
| 460 | { |
| 461 | free(list); |
| 462 | continue; |
| 463 | } |
| 464 | |
| 465 | if ( |
| 466 | !string_is_empty(line) |
| 467 | && config_file_parse_line(conf, list, line, cb)) |
| 468 | { |
| 469 | if (conf->entries) |
| 470 | conf->tail->next = list; |
| 471 | else |
| 472 | conf->entries = list; |
| 473 | |
| 474 | conf->tail = list; |
| 475 | |
| 476 | if (list->key) |
| 477 | { |
| 478 | /* Only add entry to the map if an entry |
| 479 | * with the specified value does not |
| 480 | * already exist */ |
| 481 | uint32_t hash = rhmap_hash_string(list->key); |
| 482 | |
| 483 | if (!RHMAP_HAS_FULL(conf->entries_map, hash, list->key)) |
| 484 | { |
| 485 | RHMAP_SET_FULL(conf->entries_map, hash, list->key, list); |
| 486 | |
| 487 | if (cb && list->value) |
| 488 | cb->config_file_new_entry_cb(list->key, list->value); |
| 489 | } |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | free(line); |
| 494 | |
| 495 | if (list != conf->tail) |
| 496 | free(list); |
| 497 | } |
| 498 | |
| 499 | filestream_close(file); |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static bool config_file_parse_line(config_file_t *conf, |
| 505 | struct config_entry_list *list, char *line, config_file_cb_t *cb) |
| 506 | { |
| 507 | size_t cur_size = 32; |
| 508 | size_t idx = 0; |
| 509 | char *key = NULL; |
| 510 | char *key_tmp = NULL; |
| 511 | /* Remove any comment text */ |
| 512 | char *comment = config_file_strip_comment(line); |
| 513 | |
| 514 | /* Check whether entire line is a comment */ |
| 515 | if (comment) |
| 516 | { |
| 517 | char *path = NULL; |
| 518 | bool include_found = string_starts_with_size(comment, |
| 519 | "include ", |
| 520 | STRLEN_CONST("include ")); |
| 521 | bool reference_found = string_starts_with_size(comment, |
| 522 | "reference ", |
| 523 | STRLEN_CONST("reference ")); |
| 524 | |
| 525 | /* All comments except those starting with the include or |
| 526 | * reference directive are ignored */ |
| 527 | if (!include_found && !reference_found) |
| 528 | return false; |
| 529 | |
| 530 | /* Starting a line with an 'include' directive |
| 531 | * appends a sub-config file */ |
| 532 | if (include_found) |
| 533 | { |
| 534 | config_file_t sub_conf; |
| 535 | char real_path[PATH_MAX_LENGTH]; |
| 536 | char *include_line = comment + STRLEN_CONST("include "); |
| 537 | |
| 538 | if (string_is_empty(include_line)) |
| 539 | return false; |
| 540 | |
| 541 | if (!(path = config_file_extract_value(include_line))) |
| 542 | return false; |
| 543 | |
| 544 | if ( string_is_empty(path) |
| 545 | || conf->include_depth >= MAX_INCLUDE_DEPTH) |
| 546 | { |
| 547 | free(path); |
| 548 | return false; |
| 549 | } |
| 550 | |
| 551 | config_file_add_sub_conf(conf, path, |
| 552 | real_path, sizeof(real_path), cb); |
| 553 | |
| 554 | config_file_initialize(&sub_conf); |
| 555 | |
| 556 | switch (config_file_load_internal(&sub_conf, real_path, |
| 557 | conf->include_depth + 1, cb)) |
| 558 | { |
| 559 | case 0: |
| 560 | /* Pilfer internal list. */ |
| 561 | config_file_add_child_list(conf, &sub_conf); |
| 562 | /* fall-through to deinitialize */ |
| 563 | case -1: |
| 564 | config_file_deinitialize(&sub_conf); |
| 565 | break; |
| 566 | case 1: |
| 567 | default: |
| 568 | break; |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | /* Starting a line with an 'reference' directive |
| 573 | * sets the reference path */ |
| 574 | if (reference_found) |
| 575 | { |
| 576 | char *reference_line = comment + STRLEN_CONST("reference "); |
| 577 | |
| 578 | if (string_is_empty(reference_line)) |
| 579 | return false; |
| 580 | |
| 581 | if (!(path = config_file_extract_value(reference_line))) |
| 582 | return false; |
| 583 | |
| 584 | config_file_add_reference(conf, path); |
| 585 | |
| 586 | if (!path) |
| 587 | return false; |
| 588 | } |
| 589 | |
| 590 | free(path); |
| 591 | return true; |
| 592 | } |
| 593 | |
| 594 | /* Skip to first non-space character */ |
| 595 | while (ISSPACE((int)*line)) |
| 596 | line++; |
| 597 | |
| 598 | /* Allocate storage for key */ |
| 599 | if (!(key = (char*)malloc(cur_size + 1))) |
| 600 | return false; |
| 601 | |
| 602 | /* Copy line contents into key until we |
| 603 | * reach the next space character */ |
| 604 | while (isgraph((int)*line)) |
| 605 | { |
| 606 | /* If current key storage is too small, |
| 607 | * double its size */ |
| 608 | if (idx == cur_size) |
| 609 | { |
| 610 | cur_size *= 2; |
| 611 | if (!(key_tmp = (char*)realloc(key, cur_size + 1))) |
| 612 | { |
| 613 | free(key); |
| 614 | return false; |
| 615 | } |
| 616 | |
| 617 | key = key_tmp; |
| 618 | } |
| 619 | |
| 620 | key[idx++] = *line++; |
| 621 | } |
| 622 | key[idx] = '\0'; |
| 623 | |
| 624 | /* Add key and value entries to list */ |
| 625 | list->key = key; |
| 626 | |
| 627 | /* An entry without a value is invalid */ |
| 628 | while (ISSPACE((int)*line)) |
| 629 | line++; |
| 630 | |
| 631 | /* If we don't have an equal sign here, |
| 632 | * we've got an invalid string. */ |
| 633 | if (*line != '=') |
| 634 | { |
| 635 | list->value = NULL; |
| 636 | goto error; |
| 637 | } |
| 638 | |
| 639 | line++; |
| 640 | |
| 641 | if (!(list->value = config_file_extract_value(line))) |
| 642 | goto error; |
| 643 | |
| 644 | return true; |
| 645 | |
| 646 | error: |
| 647 | list->key = NULL; |
| 648 | free(key); |
| 649 | return false; |
| 650 | } |
| 651 | |
| 652 | static int config_file_from_string_internal( |
| 653 | struct config_file *conf, |
| 654 | char *from_string, |
| 655 | const char *path) |
| 656 | { |
| 657 | char *lines = from_string; |
| 658 | char *save_ptr = NULL; |
| 659 | char *line = NULL; |
| 660 | |
| 661 | if (!string_is_empty(path)) |
| 662 | conf->path = strdup(path); |
| 663 | if (string_is_empty(lines)) |
| 664 | return 0; |
| 665 | |
| 666 | /* Get first line of config file */ |
| 667 | line = strtok_r(lines, "\n", &save_ptr); |
| 668 | |
| 669 | while (line) |
| 670 | { |
| 671 | struct config_entry_list *list = (struct config_entry_list*) |
| 672 | malloc(sizeof(*list)); |
| 673 | |
| 674 | if (!list) |
| 675 | return -1; |
| 676 | |
| 677 | list->readonly = false; |
| 678 | list->key = NULL; |
| 679 | list->value = NULL; |
| 680 | list->next = NULL; |
| 681 | |
| 682 | /* Parse current line */ |
| 683 | if ( |
| 684 | !string_is_empty(line) |
| 685 | && config_file_parse_line(conf, list, line, NULL)) |
| 686 | { |
| 687 | if (conf->entries) |
| 688 | conf->tail->next = list; |
| 689 | else |
| 690 | conf->entries = list; |
| 691 | |
| 692 | conf->tail = list; |
| 693 | |
| 694 | if (list->key) |
| 695 | { |
| 696 | /* Only add entry to the map if an entry |
| 697 | * with the specified value does not |
| 698 | * already exist */ |
| 699 | uint32_t hash = rhmap_hash_string(list->key); |
| 700 | if (!RHMAP_HAS_FULL(conf->entries_map, hash, list->key)) |
| 701 | RHMAP_SET_FULL(conf->entries_map, hash, list->key, list); |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | if (list != conf->tail) |
| 706 | free(list); |
| 707 | |
| 708 | /* Get next line of config file */ |
| 709 | line = strtok_r(NULL, "\n", &save_ptr); |
| 710 | } |
| 711 | |
| 712 | return 0; |
| 713 | } |
| 714 | |
| 715 | |
| 716 | bool config_file_deinitialize(config_file_t *conf) |
| 717 | { |
| 718 | struct config_include_list *inc_tmp = NULL; |
| 719 | struct config_entry_list *tmp = NULL; |
| 720 | |
| 721 | if (!conf) |
| 722 | return false; |
| 723 | |
| 724 | tmp = conf->entries; |
| 725 | while (tmp) |
| 726 | { |
| 727 | struct config_entry_list *hold = NULL; |
| 728 | if (tmp->key) |
| 729 | free(tmp->key); |
| 730 | if (tmp->value) |
| 731 | free(tmp->value); |
| 732 | |
| 733 | tmp->value = NULL; |
| 734 | tmp->key = NULL; |
| 735 | |
| 736 | hold = tmp; |
| 737 | tmp = tmp->next; |
| 738 | |
| 739 | if (hold) |
| 740 | free(hold); |
| 741 | } |
| 742 | |
| 743 | inc_tmp = (struct config_include_list*)conf->includes; |
| 744 | while (inc_tmp) |
| 745 | { |
| 746 | struct config_include_list *hold = NULL; |
| 747 | if (inc_tmp->path) |
| 748 | free(inc_tmp->path); |
| 749 | hold = (struct config_include_list*)inc_tmp; |
| 750 | inc_tmp = inc_tmp->next; |
| 751 | if (hold) |
| 752 | free(hold); |
| 753 | } |
| 754 | |
| 755 | path_linked_list_free(conf->references); |
| 756 | |
| 757 | if (conf->path) |
| 758 | free(conf->path); |
| 759 | |
| 760 | RHMAP_FREE(conf->entries_map); |
| 761 | |
| 762 | return true; |
| 763 | } |
| 764 | |
| 765 | /** |
| 766 | * config_file_free: |
| 767 | * |
| 768 | * Frees config file. |
| 769 | **/ |
| 770 | void config_file_free(config_file_t *conf) |
| 771 | { |
| 772 | if (config_file_deinitialize(conf)) |
| 773 | free(conf); |
| 774 | } |
| 775 | |
| 776 | /** |
| 777 | * config_append_file: |
| 778 | * |
| 779 | * Loads a new config, and appends its data to @conf. |
| 780 | * The key-value pairs of the new config file takes priority over the old. |
| 781 | **/ |
| 782 | bool config_append_file(config_file_t *conf, const char *path) |
| 783 | { |
| 784 | size_t i, cap; |
| 785 | config_file_t *new_conf = config_file_new_from_path_to_string(path); |
| 786 | |
| 787 | if (!new_conf) |
| 788 | return false; |
| 789 | |
| 790 | /* Update hash map */ |
| 791 | for (i = 0, cap = RHMAP_CAP(new_conf->entries_map); i != cap; i++) |
| 792 | { |
| 793 | uint32_t new_hash = RHMAP_KEY(new_conf->entries_map, i); |
| 794 | const char *new_key = RHMAP_KEY_STR(new_conf->entries_map, i); |
| 795 | |
| 796 | if (new_hash && new_key) |
| 797 | { |
| 798 | struct config_entry_list *entry = new_conf->entries_map[i]; |
| 799 | |
| 800 | if (entry) |
| 801 | RHMAP_SET_FULL(conf->entries_map, new_hash, new_key, entry); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | if (new_conf->tail) |
| 806 | { |
| 807 | new_conf->tail->next = conf->entries; |
| 808 | conf->entries = new_conf->entries; /* Pilfer. */ |
| 809 | new_conf->entries = NULL; |
| 810 | } |
| 811 | |
| 812 | config_file_free(new_conf); |
| 813 | return true; |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * config_file_new_from_string: |
| 818 | * |
| 819 | * Load a config file from a string. |
| 820 | * |
| 821 | * NOTE: This will modify @from_string. |
| 822 | * Pass a copy of source string if original |
| 823 | * contents must be preserved |
| 824 | **/ |
| 825 | config_file_t *config_file_new_from_string(char *from_string, |
| 826 | const char *path) |
| 827 | { |
| 828 | struct config_file *conf = config_file_new_alloc(); |
| 829 | if ( conf |
| 830 | && config_file_from_string_internal( |
| 831 | conf, from_string, path) != -1) |
| 832 | return conf; |
| 833 | if (conf) |
| 834 | config_file_free(conf); |
| 835 | return NULL; |
| 836 | } |
| 837 | |
| 838 | config_file_t *config_file_new_from_path_to_string(const char *path) |
| 839 | { |
| 840 | if (path_is_valid(path)) |
| 841 | { |
| 842 | uint8_t *ret_buf = NULL; |
| 843 | int64_t length = 0; |
| 844 | if (filestream_read_file(path, (void**)&ret_buf, &length)) |
| 845 | { |
| 846 | config_file_t *conf = NULL; |
| 847 | /* Note: 'ret_buf' is not used outside this |
| 848 | * function - we do not care that it will be |
| 849 | * modified by config_file_new_from_string() */ |
| 850 | if (length >= 0) |
| 851 | conf = config_file_new_from_string((char*)ret_buf, path); |
| 852 | |
| 853 | if ((void*)ret_buf) |
| 854 | free((void*)ret_buf); |
| 855 | |
| 856 | return conf; |
| 857 | } |
| 858 | } |
| 859 | |
| 860 | return NULL; |
| 861 | } |
| 862 | |
| 863 | /** |
| 864 | * config_file_new_with_callback: |
| 865 | * |
| 866 | * Loads a config file. |
| 867 | * If @path is NULL, will create an empty config file. |
| 868 | * Includes cb callbacks to run custom code during config file processing. |
| 869 | * |
| 870 | * @return Returns NULL if file doesn't exist. |
| 871 | **/ |
| 872 | config_file_t *config_file_new_with_callback( |
| 873 | const char *path, config_file_cb_t *cb) |
| 874 | { |
| 875 | int ret = 0; |
| 876 | struct config_file *conf = config_file_new_alloc(); |
| 877 | if (!path || !*path) |
| 878 | return conf; |
| 879 | if ((ret = config_file_load_internal(conf, path, 0, cb)) == -1) |
| 880 | { |
| 881 | config_file_free(conf); |
| 882 | return NULL; |
| 883 | } |
| 884 | else if (ret == 1) |
| 885 | { |
| 886 | free(conf); |
| 887 | return NULL; |
| 888 | } |
| 889 | return conf; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * config_file_new: |
| 894 | * |
| 895 | * Loads a config file. |
| 896 | * If @path is NULL, will create an empty config file. |
| 897 | * |
| 898 | * @return Returns NULL if file doesn't exist. |
| 899 | **/ |
| 900 | config_file_t *config_file_new(const char *path) |
| 901 | { |
| 902 | int ret = 0; |
| 903 | struct config_file *conf = config_file_new_alloc(); |
| 904 | if (!path || !*path) |
| 905 | return conf; |
| 906 | if ((ret = config_file_load_internal(conf, path, 0, NULL)) == -1) |
| 907 | { |
| 908 | config_file_free(conf); |
| 909 | return NULL; |
| 910 | } |
| 911 | else if (ret == 1) |
| 912 | { |
| 913 | free(conf); |
| 914 | return NULL; |
| 915 | } |
| 916 | return conf; |
| 917 | } |
| 918 | |
| 919 | /** |
| 920 | * config_file_initialize: |
| 921 | * |
| 922 | * Leaf function. |
| 923 | **/ |
| 924 | void config_file_initialize(struct config_file *conf) |
| 925 | { |
| 926 | if (!conf) |
| 927 | return; |
| 928 | |
| 929 | conf->path = NULL; |
| 930 | conf->entries_map = NULL; |
| 931 | conf->entries = NULL; |
| 932 | conf->tail = NULL; |
| 933 | conf->last = NULL; |
| 934 | conf->references = NULL; |
| 935 | conf->includes = NULL; |
| 936 | conf->include_depth = 0; |
| 937 | conf->guaranteed_no_duplicates = false; |
| 938 | conf->modified = false; |
| 939 | } |
| 940 | |
| 941 | config_file_t *config_file_new_alloc(void) |
| 942 | { |
| 943 | struct config_file *conf = (struct config_file*)malloc(sizeof(*conf)); |
| 944 | if (!conf) |
| 945 | return NULL; |
| 946 | config_file_initialize(conf); |
| 947 | return conf; |
| 948 | } |
| 949 | |
| 950 | /** |
| 951 | * config_get_entry_internal: |
| 952 | * |
| 953 | * Leaf function. |
| 954 | **/ |
| 955 | static struct config_entry_list *config_get_entry_internal( |
| 956 | const config_file_t *conf, |
| 957 | const char *key, struct config_entry_list **prev) |
| 958 | { |
| 959 | struct config_entry_list *entry = RHMAP_GET_STR(conf->entries_map, key); |
| 960 | |
| 961 | if (entry) |
| 962 | return entry; |
| 963 | |
| 964 | if (prev) |
| 965 | { |
| 966 | struct config_entry_list *previous = *prev; |
| 967 | for (entry = conf->entries; entry; entry = entry->next) |
| 968 | previous = entry; |
| 969 | |
| 970 | *prev = previous; |
| 971 | } |
| 972 | |
| 973 | return NULL; |
| 974 | } |
| 975 | |
| 976 | struct config_entry_list *config_get_entry( |
| 977 | const config_file_t *conf, const char *key) |
| 978 | { |
| 979 | return RHMAP_GET_STR(conf->entries_map, key); |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * config_get_double: |
| 984 | * |
| 985 | * Extracts a double from config file. |
| 986 | * |
| 987 | * @return true if found, otherwise false. |
| 988 | **/ |
| 989 | bool config_get_double(config_file_t *conf, const char *key, double *in) |
| 990 | { |
| 991 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 992 | |
| 993 | if (!entry) |
| 994 | return false; |
| 995 | |
| 996 | *in = strtod(entry->value, NULL); |
| 997 | return true; |
| 998 | } |
| 999 | |
| 1000 | /** |
| 1001 | * config_get_float: |
| 1002 | * |
| 1003 | * Extracts a float from config file. |
| 1004 | * |
| 1005 | * @return true if found, otherwise false. |
| 1006 | **/ |
| 1007 | bool config_get_float(config_file_t *conf, const char *key, float *in) |
| 1008 | { |
| 1009 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1010 | |
| 1011 | if (!entry) |
| 1012 | return false; |
| 1013 | |
| 1014 | /* strtof() is C99/POSIX. Just use the more portable kind. */ |
| 1015 | *in = (float)strtod(entry->value, NULL); |
| 1016 | return true; |
| 1017 | } |
| 1018 | |
| 1019 | bool config_get_int(config_file_t *conf, const char *key, int *in) |
| 1020 | { |
| 1021 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1022 | errno = 0; |
| 1023 | |
| 1024 | if (entry) |
| 1025 | { |
| 1026 | int val = (int)strtol(entry->value, NULL, 0); |
| 1027 | |
| 1028 | if (errno == 0) |
| 1029 | { |
| 1030 | *in = val; |
| 1031 | return true; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | return false; |
| 1036 | } |
| 1037 | |
| 1038 | bool config_get_size_t(config_file_t *conf, const char *key, size_t *in) |
| 1039 | { |
| 1040 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1041 | errno = 0; |
| 1042 | |
| 1043 | if (entry) |
| 1044 | { |
| 1045 | size_t val = 0; |
| 1046 | if (sscanf(entry->value, "%" PRI_SIZET, &val) == 1) |
| 1047 | { |
| 1048 | *in = val; |
| 1049 | return true; |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | return false; |
| 1054 | } |
| 1055 | |
| 1056 | #if defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L |
| 1057 | bool config_get_uint64(config_file_t *conf, const char *key, uint64_t *in) |
| 1058 | { |
| 1059 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1060 | errno = 0; |
| 1061 | |
| 1062 | if (entry) |
| 1063 | { |
| 1064 | uint64_t val = strtoull(entry->value, NULL, 0); |
| 1065 | |
| 1066 | if (errno == 0) |
| 1067 | { |
| 1068 | *in = val; |
| 1069 | return true; |
| 1070 | } |
| 1071 | } |
| 1072 | return false; |
| 1073 | } |
| 1074 | #endif |
| 1075 | |
| 1076 | bool config_get_uint(config_file_t *conf, const char *key, unsigned *in) |
| 1077 | { |
| 1078 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1079 | errno = 0; |
| 1080 | |
| 1081 | if (entry) |
| 1082 | { |
| 1083 | unsigned val = (unsigned)strtoul(entry->value, NULL, 0); |
| 1084 | |
| 1085 | if (errno == 0) |
| 1086 | { |
| 1087 | *in = val; |
| 1088 | return true; |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | return false; |
| 1093 | } |
| 1094 | |
| 1095 | bool config_get_hex(config_file_t *conf, const char *key, unsigned *in) |
| 1096 | { |
| 1097 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1098 | errno = 0; |
| 1099 | |
| 1100 | if (entry) |
| 1101 | { |
| 1102 | unsigned val = (unsigned)strtoul(entry->value, NULL, 16); |
| 1103 | |
| 1104 | if (errno == 0) |
| 1105 | { |
| 1106 | *in = val; |
| 1107 | return true; |
| 1108 | } |
| 1109 | } |
| 1110 | |
| 1111 | return false; |
| 1112 | } |
| 1113 | |
| 1114 | /** |
| 1115 | * config_get_char: |
| 1116 | * |
| 1117 | * Extracts a single char from config file. |
| 1118 | * If value consists of several chars, this is an error. |
| 1119 | * |
| 1120 | * @return true if found, otherwise false. |
| 1121 | **/ |
| 1122 | bool config_get_char(config_file_t *conf, const char *key, char *in) |
| 1123 | { |
| 1124 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1125 | |
| 1126 | if (entry) |
| 1127 | { |
| 1128 | if (entry->value[0] && entry->value[1]) |
| 1129 | return false; |
| 1130 | |
| 1131 | *in = *entry->value; |
| 1132 | return true; |
| 1133 | } |
| 1134 | |
| 1135 | return false; |
| 1136 | } |
| 1137 | |
| 1138 | /** |
| 1139 | * config_get_string: |
| 1140 | * |
| 1141 | * Extracts an allocated string in *in. This must be free()-d if |
| 1142 | * this function succeeds. |
| 1143 | * |
| 1144 | * @return true if found, otherwise false. |
| 1145 | **/ |
| 1146 | bool config_get_string(config_file_t *conf, const char *key, char **str) |
| 1147 | { |
| 1148 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1149 | |
| 1150 | if (!entry || !entry->value) |
| 1151 | return false; |
| 1152 | |
| 1153 | *str = strdup(entry->value); |
| 1154 | return true; |
| 1155 | } |
| 1156 | |
| 1157 | /** |
| 1158 | * config_get_config_path: |
| 1159 | * |
| 1160 | * Extracts a string to a preallocated buffer. |
| 1161 | * Avoid memory allocation. |
| 1162 | **/ |
| 1163 | bool config_get_config_path(config_file_t *conf, char *s, size_t len) |
| 1164 | { |
| 1165 | if (conf) |
| 1166 | return strlcpy(s, conf->path, len); |
| 1167 | return false; |
| 1168 | } |
| 1169 | |
| 1170 | bool config_get_array(config_file_t *conf, const char *key, |
| 1171 | char *buf, size_t size) |
| 1172 | { |
| 1173 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1174 | if (entry) |
| 1175 | return strlcpy(buf, entry->value, size) < size; |
| 1176 | return false; |
| 1177 | } |
| 1178 | |
| 1179 | bool config_get_path(config_file_t *conf, const char *key, |
| 1180 | char *buf, size_t size) |
| 1181 | { |
| 1182 | #if defined(RARCH_CONSOLE) || !defined(RARCH_INTERNAL) |
| 1183 | if (config_get_array(conf, key, buf, size)) |
| 1184 | return true; |
| 1185 | #else |
| 1186 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1187 | if (entry) |
| 1188 | { |
| 1189 | fill_pathname_expand_special(buf, entry->value, size); |
| 1190 | return true; |
| 1191 | } |
| 1192 | #endif |
| 1193 | return false; |
| 1194 | } |
| 1195 | |
| 1196 | /** |
| 1197 | * config_get_bool: |
| 1198 | * |
| 1199 | * Extracts a boolean from config. |
| 1200 | * Valid boolean true are "true" and "1". Valid false are "false" and "0". |
| 1201 | * Other values will be treated as an error. |
| 1202 | * |
| 1203 | * @return true if preconditions are true, otherwise false. |
| 1204 | **/ |
| 1205 | bool config_get_bool(config_file_t *conf, const char *key, bool *in) |
| 1206 | { |
| 1207 | const struct config_entry_list *entry = config_get_entry(conf, key); |
| 1208 | |
| 1209 | if (!entry) |
| 1210 | return false; |
| 1211 | |
| 1212 | if ( |
| 1213 | ( |
| 1214 | entry->value[0] == '1' |
| 1215 | && entry->value[1] == '\0' |
| 1216 | ) |
| 1217 | || string_is_equal(entry->value, "true") |
| 1218 | ) |
| 1219 | *in = true; |
| 1220 | else if ( |
| 1221 | ( |
| 1222 | entry->value[0] == '0' |
| 1223 | && entry->value[1] == '\0' |
| 1224 | ) |
| 1225 | || string_is_equal(entry->value, "false") |
| 1226 | ) |
| 1227 | *in = false; |
| 1228 | else |
| 1229 | return false; |
| 1230 | |
| 1231 | return true; |
| 1232 | } |
| 1233 | |
| 1234 | void config_set_string(config_file_t *conf, const char *key, const char *val) |
| 1235 | { |
| 1236 | struct config_entry_list *last = NULL; |
| 1237 | struct config_entry_list *entry = NULL; |
| 1238 | |
| 1239 | if (!conf || !key || !val) |
| 1240 | return; |
| 1241 | |
| 1242 | last = conf->entries; |
| 1243 | |
| 1244 | if (conf->guaranteed_no_duplicates) |
| 1245 | { |
| 1246 | if (conf->last) |
| 1247 | last = conf->last; |
| 1248 | } |
| 1249 | else |
| 1250 | { |
| 1251 | if ((entry = config_get_entry_internal(conf, key, &last))) |
| 1252 | { |
| 1253 | /* An entry corresponding to 'key' already exists |
| 1254 | * > Check whether value is currently set */ |
| 1255 | if (entry->value) |
| 1256 | { |
| 1257 | /* Do nothing if value is unchanged */ |
| 1258 | if (string_is_equal(entry->value, val)) |
| 1259 | return; |
| 1260 | |
| 1261 | /* Value is to be updated |
| 1262 | * > Free existing */ |
| 1263 | free(entry->value); |
| 1264 | } |
| 1265 | |
| 1266 | /* Update value |
| 1267 | * > Note that once a value is set, it |
| 1268 | * is no longer considered 'read only' */ |
| 1269 | entry->value = strdup(val); |
| 1270 | entry->readonly = false; |
| 1271 | conf->modified = true; |
| 1272 | return; |
| 1273 | } |
| 1274 | } |
| 1275 | |
| 1276 | /* Entry corresponding to 'key' does not exist |
| 1277 | * > Create new entry */ |
| 1278 | if (!(entry = (struct config_entry_list*)malloc(sizeof(*entry)))) |
| 1279 | return; |
| 1280 | |
| 1281 | entry->readonly = false; |
| 1282 | entry->key = strdup(key); |
| 1283 | entry->value = strdup(val); |
| 1284 | entry->next = NULL; |
| 1285 | conf->modified = true; |
| 1286 | |
| 1287 | if (last) |
| 1288 | last->next = entry; |
| 1289 | else |
| 1290 | conf->entries = entry; |
| 1291 | |
| 1292 | conf->last = entry; |
| 1293 | |
| 1294 | RHMAP_SET_STR(conf->entries_map, entry->key, entry); |
| 1295 | } |
| 1296 | |
| 1297 | void config_unset(config_file_t *conf, const char *key) |
| 1298 | { |
| 1299 | struct config_entry_list *last = NULL; |
| 1300 | struct config_entry_list *entry = NULL; |
| 1301 | |
| 1302 | if (!conf || !key) |
| 1303 | return; |
| 1304 | |
| 1305 | last = conf->entries; |
| 1306 | |
| 1307 | if (!(entry = config_get_entry_internal(conf, key, &last))) |
| 1308 | return; |
| 1309 | |
| 1310 | (void)RHMAP_DEL_STR(conf->entries_map, entry->key); |
| 1311 | |
| 1312 | if (entry->key) |
| 1313 | free(entry->key); |
| 1314 | |
| 1315 | if (entry->value) |
| 1316 | free(entry->value); |
| 1317 | |
| 1318 | entry->key = NULL; |
| 1319 | entry->value = NULL; |
| 1320 | conf->modified = true; |
| 1321 | } |
| 1322 | |
| 1323 | void config_set_path(config_file_t *conf, const char *entry, const char *val) |
| 1324 | { |
| 1325 | #if defined(RARCH_CONSOLE) || !defined(RARCH_INTERNAL) |
| 1326 | config_set_string(conf, entry, val); |
| 1327 | #else |
| 1328 | char buf[PATH_MAX_LENGTH]; |
| 1329 | fill_pathname_abbreviate_special(buf, val, sizeof(buf)); |
| 1330 | config_set_string(conf, entry, buf); |
| 1331 | #endif |
| 1332 | } |
| 1333 | |
| 1334 | void config_set_double(config_file_t *conf, const char *key, double val) |
| 1335 | { |
| 1336 | char buf[320]; |
| 1337 | #ifdef __cplusplus |
| 1338 | snprintf(buf, sizeof(buf), "%f", (float)val); |
| 1339 | #elif defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L |
| 1340 | snprintf(buf, sizeof(buf), "%lf", val); |
| 1341 | #else |
| 1342 | snprintf(buf, sizeof(buf), "%f", (float)val); |
| 1343 | #endif |
| 1344 | config_set_string(conf, key, buf); |
| 1345 | } |
| 1346 | |
| 1347 | void config_set_float(config_file_t *conf, const char *key, float val) |
| 1348 | { |
| 1349 | char buf[64]; |
| 1350 | snprintf(buf, sizeof(buf), "%f", val); |
| 1351 | config_set_string(conf, key, buf); |
| 1352 | } |
| 1353 | |
| 1354 | void config_set_int(config_file_t *conf, const char *key, int val) |
| 1355 | { |
| 1356 | char buf[16]; |
| 1357 | snprintf(buf, sizeof(buf), "%d", val); |
| 1358 | config_set_string(conf, key, buf); |
| 1359 | } |
| 1360 | |
| 1361 | void config_set_uint(config_file_t *conf, const char *key, unsigned int val) |
| 1362 | { |
| 1363 | char buf[16]; |
| 1364 | snprintf(buf, sizeof(buf), "%u", val); |
| 1365 | config_set_string(conf, key, buf); |
| 1366 | } |
| 1367 | |
| 1368 | void config_set_hex(config_file_t *conf, const char *key, unsigned val) |
| 1369 | { |
| 1370 | char buf[16]; |
| 1371 | snprintf(buf, sizeof(buf), "%x", val); |
| 1372 | config_set_string(conf, key, buf); |
| 1373 | } |
| 1374 | |
| 1375 | void config_set_uint64(config_file_t *conf, const char *key, uint64_t val) |
| 1376 | { |
| 1377 | char buf[32]; |
| 1378 | snprintf(buf, sizeof(buf), "%" PRIu64, val); |
| 1379 | config_set_string(conf, key, buf); |
| 1380 | } |
| 1381 | |
| 1382 | void config_set_char(config_file_t *conf, const char *key, char val) |
| 1383 | { |
| 1384 | char buf[2]; |
| 1385 | snprintf(buf, sizeof(buf), "%c", val); |
| 1386 | config_set_string(conf, key, buf); |
| 1387 | } |
| 1388 | |
| 1389 | /** |
| 1390 | * config_set_bool: |
| 1391 | |
| 1392 | * TODO/FIXME - could be turned into a trivial macro or removed |
| 1393 | **/ |
| 1394 | void config_set_bool(config_file_t *conf, const char *key, bool val) |
| 1395 | { |
| 1396 | config_set_string(conf, key, val ? "true" : "false"); |
| 1397 | } |
| 1398 | |
| 1399 | /** |
| 1400 | * config_file_write: |
| 1401 | * |
| 1402 | * Write the current config to a file. |
| 1403 | **/ |
| 1404 | bool config_file_write(config_file_t *conf, const char *path, bool sort) |
| 1405 | { |
| 1406 | if (!conf) |
| 1407 | return false; |
| 1408 | |
| 1409 | if (!conf->modified) |
| 1410 | return true; |
| 1411 | |
| 1412 | if (!string_is_empty(path)) |
| 1413 | { |
| 1414 | void* buf = NULL; |
| 1415 | FILE *file = (FILE*)fopen_utf8(path, "wb"); |
| 1416 | if (!file) |
| 1417 | return false; |
| 1418 | |
| 1419 | buf = calloc(1, 0x4000); |
| 1420 | setvbuf(file, (char*)buf, _IOFBF, 0x4000); |
| 1421 | |
| 1422 | config_file_dump(conf, file, sort); |
| 1423 | |
| 1424 | if (file != stdout) |
| 1425 | fclose(file); |
| 1426 | if (buf) |
| 1427 | free(buf); |
| 1428 | |
| 1429 | /* Only update modified flag if config file |
| 1430 | * is actually written to disk */ |
| 1431 | conf->modified = false; |
| 1432 | } |
| 1433 | else |
| 1434 | config_file_dump(conf, stdout, sort); |
| 1435 | |
| 1436 | return true; |
| 1437 | } |
| 1438 | |
| 1439 | /** |
| 1440 | * config_file_dump: |
| 1441 | * |
| 1442 | * Dump the current config to an already opened file. |
| 1443 | * Does not close the file. |
| 1444 | **/ |
| 1445 | void config_file_dump(config_file_t *conf, FILE *file, bool sort) |
| 1446 | { |
| 1447 | struct config_entry_list *list = NULL; |
| 1448 | struct config_include_list *includes = conf->includes; |
| 1449 | struct path_linked_list *ref_tmp = conf->references; |
| 1450 | |
| 1451 | while (ref_tmp) |
| 1452 | { |
| 1453 | pathname_make_slashes_portable(ref_tmp->path); |
| 1454 | fprintf(file, "#reference \"%s\"\n", ref_tmp->path); |
| 1455 | ref_tmp = ref_tmp->next; |
| 1456 | } |
| 1457 | |
| 1458 | if (sort) |
| 1459 | list = config_file_merge_sort_linked_list( |
| 1460 | (struct config_entry_list*)conf->entries, |
| 1461 | config_file_sort_compare_func); |
| 1462 | else |
| 1463 | list = (struct config_entry_list*)conf->entries; |
| 1464 | |
| 1465 | conf->entries = list; |
| 1466 | |
| 1467 | while (list) |
| 1468 | { |
| 1469 | if (!list->readonly && list->key) |
| 1470 | fprintf(file, "%s = \"%s\"\n", list->key, list->value); |
| 1471 | list = list->next; |
| 1472 | } |
| 1473 | |
| 1474 | /* Config files are read from the top down - if |
| 1475 | * duplicate entries are found then the topmost |
| 1476 | * one in the list takes precedence. This means |
| 1477 | * '#include' directives must go *after* individual |
| 1478 | * config entries, otherwise they will override |
| 1479 | * any custom-set values */ |
| 1480 | while (includes) |
| 1481 | { |
| 1482 | fprintf(file, "#include \"%s\"\n", includes->path); |
| 1483 | includes = includes->next; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | /** |
| 1488 | * config_get_entry_list_head: |
| 1489 | * |
| 1490 | * Leaf function. |
| 1491 | **/ |
| 1492 | bool config_get_entry_list_head(config_file_t *conf, |
| 1493 | struct config_file_entry *entry) |
| 1494 | { |
| 1495 | const struct config_entry_list *head = conf->entries; |
| 1496 | |
| 1497 | if (!head) |
| 1498 | return false; |
| 1499 | |
| 1500 | entry->key = head->key; |
| 1501 | entry->value = head->value; |
| 1502 | entry->next = head->next; |
| 1503 | return true; |
| 1504 | } |
| 1505 | |
| 1506 | /** |
| 1507 | * config_get_entry_list_next: |
| 1508 | * |
| 1509 | * Leaf function. |
| 1510 | **/ |
| 1511 | bool config_get_entry_list_next(struct config_file_entry *entry) |
| 1512 | { |
| 1513 | const struct config_entry_list *next = entry->next; |
| 1514 | |
| 1515 | if (!next) |
| 1516 | return false; |
| 1517 | |
| 1518 | entry->key = next->key; |
| 1519 | entry->value = next->value; |
| 1520 | entry->next = next->next; |
| 1521 | return true; |
| 1522 | } |