Mercurial > hg > dmlib
annotate dmres.c @ 237:6d9d43bb68eb
Oops, another silly issue in dmfgets().
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Tue, 09 Oct 2012 04:43:03 +0300 |
| parents | 8189be40ed7c |
| children | 59045853853d |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * dmlib | |
| 3 * -- Resource management | |
| 4 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 5 * (C) Copyright 2003-2012 Tecnic Software productions (TNSP) | |
| 6 */ | |
| 7 #include "dmres.h" | |
| 8 #include <time.h> | |
| 9 | |
| 10 | |
| 11 #define DMRES_LOCK(x) dmMutexLock(dfResourcesMutex) | |
| 12 #define DMRES_UNLOCK(x) dmMutexUnlock(dfResourcesMutex) | |
| 13 | |
| 14 | |
| 15 /* Global variables | |
| 16 */ | |
| 17 static BOOL dfResInitialized = FALSE; | |
| 18 static int dfResFlags = 0; | |
| 19 static char * dfResPath = NULL; | |
| 20 DMResource * dfResources = NULL; | |
| 21 DMMutex * dfResourcesMutex = NULL; | |
| 22 | |
| 23 | |
|
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24 #ifdef DM_USE_PACKFS |
| 0 | 25 static DMPackFile *dfResPackFile = NULL; |
| 26 static char * dfResPackFilename = NULL; | |
| 27 #endif | |
| 28 | |
| 29 | |
| 30 DMResource *dmres_new(const char *filename, int flags, size_t size) | |
| 31 { | |
|
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32 DMResource *node = dmMalloc0(sizeof(DMResource)); |
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33 if (node == NULL) |
| 0 | 34 return NULL; |
| 35 | |
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36 node->filename = dm_strdup(filename); |
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37 node->flags = flags; |
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38 node->dataSize = size; |
| 0 | 39 |
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40 return node; |
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41 } |
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42 |
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43 |
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44 void dmres_free_res_data(DMResource *node) |
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45 { |
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46 if (node->rdata != NULL && |
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47 node->rops != NULL && |
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48 node->rops->free != NULL) |
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49 { |
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50 node->rops->free(node); |
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51 } |
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52 |
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53 node->rdata = NULL; |
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54 node->flags &= !DMF_LOADED_RES; |
| 0 | 55 } |
| 56 | |
| 57 | |
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58 void dmres_free_raw_data(DMResource *node) |
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59 { |
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60 dmFree(node->data); |
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61 node->data = NULL; |
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62 node->flags &= !DMF_LOADED_RAW; |
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63 } |
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64 |
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65 |
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66 void dmres_purge_raw_data(DMResource *node) |
| 0 | 67 { |
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68 if ((node->flags & DMF_PRELOAD_RAW) == 0 && |
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69 (node->flags & DMF_LOADED_RAW) && |
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70 node->data != NULL) |
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71 dmres_free_raw_data(node); |
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72 } |
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73 |
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74 |
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75 void dmres_free(DMResource *node) |
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76 { |
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77 if (node != NULL) |
| 0 | 78 { |
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79 dmres_free_res_data(node); |
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80 dmres_free_raw_data(node); |
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81 dmFree(node->filename); |
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82 dmFree(node); |
| 0 | 83 } |
| 84 } | |
| 85 | |
| 86 | |
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87 static void dmres_insert(DMResource * node) |
| 0 | 88 { |
| 89 if (dfResources != NULL) | |
| 90 { | |
| 91 node->prev = dfResources->prev; | |
| 92 dfResources->prev->next = node; | |
| 93 dfResources->prev = node; | |
| 94 } | |
| 95 else | |
| 96 { | |
| 97 dfResources = node->prev = node; | |
| 98 } | |
| 99 | |
| 100 node->next = NULL; | |
| 101 } | |
| 102 | |
| 103 | |
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104 static void dmres_delete(DMResource * node) |
| 0 | 105 { |
| 106 if (node->prev) | |
| 107 node->prev->next = node->next; | |
| 108 | |
| 109 if (node->next) | |
| 110 node->next->prev = node->prev; | |
| 111 else | |
| 112 dfResources->prev = node->prev; | |
| 113 | |
| 114 node->prev = node->next = NULL; | |
| 115 } | |
| 116 | |
| 117 | |
| 118 DMResource * dmres_find(const char *filename) | |
| 119 { | |
| 120 DMResource *node, *found = NULL; | |
| 121 | |
| 122 DMRES_LOCK(); | |
| 123 | |
| 124 for (node = dfResources; node != NULL; node = node->next) | |
| 125 { | |
| 126 if (strcmp(node->filename, filename) == 0) | |
| 127 { | |
| 128 found = node; | |
| 129 break; | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 DMRES_UNLOCK(); | |
| 134 | |
| 135 return found; | |
| 136 } | |
| 137 | |
| 138 | |
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139 #ifdef DM_USE_STDIO |
| 0 | 140 /* Basic stdio file routines |
| 141 */ | |
| 142 static int dm_stdio_fopen(DMResource *handle) | |
| 143 { | |
| 144 char *rfilename = dm_strdup_printf("%s%s", DMRES_DATA_PATH, handle->filename); | |
| 145 if (rfilename == NULL) | |
| 146 return DMERR_MALLOC; | |
| 147 | |
| 148 handle->fh = fopen(rfilename, "rb"); | |
| 149 dmFree(rfilename); | |
| 150 | |
| 151 handle->error = dmGetErrno(); | |
| 152 return (handle->fh != NULL) ? DMERR_OK : DMERR_FOPEN; | |
| 153 } | |
| 154 | |
| 155 | |
| 156 static void dm_stdio_fclose(DMResource * f) | |
| 157 { | |
| 158 if (f->fh != NULL) | |
| 159 { | |
| 160 fclose(f->fh); | |
| 161 f->fh = NULL; | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 | |
| 166 static int dm_stdio_ferror(DMResource * f) | |
| 167 { | |
| 168 return f->error; | |
| 169 } | |
| 170 | |
| 171 | |
| 172 static int dm_stdio_fseek(DMResource *f, const off_t pos, const int whence) | |
| 173 { | |
| 174 int ret = fseek(f->fh, pos, whence); | |
| 175 f->error = dmGetErrno(); | |
| 176 return ret; | |
| 177 } | |
| 178 | |
| 179 | |
| 180 static off_t dm_stdio_fsize(DMResource *f) | |
| 181 { | |
| 182 off_t savePos, fileSize; | |
| 183 | |
| 184 // Check if the size is cached | |
| 185 if (f->dataSize != 0) | |
| 186 return f->dataSize; | |
| 187 | |
| 188 // Get file size | |
| 189 savePos = ftell(f->fh); | |
| 190 if (fseek(f->fh, 0L, SEEK_END) != 0) | |
| 191 { | |
| 192 f->error = dmGetErrno(); | |
| 193 return -1; | |
| 194 } | |
| 195 | |
| 196 fileSize = ftell(f->fh); | |
| 197 if (fseek(f->fh, savePos, SEEK_SET) != 0) | |
| 198 { | |
| 199 f->error = dmGetErrno(); | |
| 200 return -1; | |
| 201 } | |
| 202 | |
| 203 f->dataSize = fileSize; | |
| 204 return fileSize; | |
| 205 } | |
| 206 | |
| 207 | |
| 208 static off_t dm_stdio_ftell(DMResource * f) | |
| 209 { | |
| 210 return ftell(f->fh); | |
| 211 } | |
| 212 | |
| 213 | |
| 214 static BOOL dm_stdio_feof(DMResource * f) | |
| 215 { | |
| 216 return feof(f->fh); | |
| 217 } | |
| 218 | |
| 219 | |
| 220 static int dm_stdio_fgetc(DMResource * f) | |
| 221 { | |
| 222 int ret = fgetc(f->fh); | |
| 223 f->error = dmGetErrno(); | |
| 224 return ret; | |
| 225 } | |
| 226 | |
| 227 | |
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228 static int dm_stdio_fputc(int v, DMResource * f) |
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229 { |
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230 int ret = fputc(v, f->fh); |
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231 f->error = dmGetErrno(); |
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232 return ret; |
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233 } |
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234 |
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235 |
| 0 | 236 static size_t dm_stdio_fread(void *ptr, size_t size, size_t nmemb, DMResource * f) |
| 237 { | |
| 238 size_t ret = fread(ptr, size, nmemb, f->fh); | |
| 239 f->error = dmGetErrno(); | |
| 240 return ret; | |
| 241 } | |
| 242 | |
| 243 | |
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244 static size_t dm_stdio_fwrite(void *ptr, size_t size, size_t nmemb, DMResource * f) |
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245 { |
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246 size_t ret = fwrite(ptr, size, nmemb, f->fh); |
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247 f->error = dmGetErrno(); |
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248 return ret; |
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249 } |
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250 |
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251 |
| 0 | 252 static int dm_stdio_preload(DMResource *handle) |
| 253 { | |
| 254 int ret = dm_stdio_fopen(handle); | |
| 255 if (ret != DMERR_OK) | |
| 256 return ret; | |
| 257 | |
| 258 dm_stdio_fsize(handle); | |
| 259 | |
| 260 handle->data = dmMalloc(handle->dataSize); | |
| 261 if (handle->data == NULL) | |
| 262 return DMERR_MALLOC; | |
| 263 | |
| 264 if (dm_stdio_fread(handle->data, sizeof(Uint8), handle->dataSize, handle) != handle->dataSize) | |
| 265 return DMERR_FREAD; | |
| 266 | |
| 267 return DMERR_OK; | |
| 268 } | |
| 269 | |
| 270 | |
| 271 DMResourceOps dfStdioFileOps = | |
| 272 { | |
| 273 dm_stdio_ferror, | |
| 274 dm_stdio_fseek, | |
| 275 dm_stdio_fsize, | |
| 276 dm_stdio_ftell, | |
| 277 dm_stdio_feof, | |
| 278 dm_stdio_fgetc, | |
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279 dm_stdio_fputc, |
| 0 | 280 dm_stdio_fread, |
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281 dm_stdio_fwrite, |
| 0 | 282 |
| 283 dm_stdio_fopen, | |
| 284 dm_stdio_fclose, | |
| 285 dm_stdio_preload | |
| 286 }; | |
| 287 | |
| 288 DMResourceOps dfStdioFHOps = | |
| 289 { | |
| 290 dm_stdio_ferror, | |
| 291 dm_stdio_fseek, | |
| 292 dm_stdio_fsize, | |
| 293 dm_stdio_ftell, | |
| 294 dm_stdio_feof, | |
| 295 dm_stdio_fgetc, | |
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296 dm_stdio_fputc, |
| 0 | 297 dm_stdio_fread, |
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298 dm_stdio_fwrite, |
| 0 | 299 |
| 300 NULL, | |
| 301 NULL, | |
| 302 NULL | |
| 303 }; | |
| 304 #endif | |
| 305 | |
| 306 | |
| 307 // Some mingw/windows headers define these as macros, which is bad for us | |
| 308 #ifdef __WIN32 | |
| 309 #undef ferror | |
| 310 #undef feof | |
| 311 #endif | |
| 312 | |
| 313 | |
| 314 /* | |
| 315 * PACK file routines | |
| 316 */ | |
|
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317 #ifdef DM_USE_PACKFS |
| 0 | 318 static int dm_pack_preload(DMResource *handle) |
| 319 { | |
| 320 DMPackEntry *node; | |
| 321 int res = DMERR_OK, cres, cdataLeft; | |
| 322 z_stream cstream; | |
| 323 Uint8 * cbuffer = NULL; | |
| 324 | |
| 325 // Search PACK nodelist for file | |
| 326 if ((node = dm_pack_find(dfResPackFile->entries, handle->filename)) == NULL) | |
| 327 { | |
| 328 dmError("Entry '%s' not found in PACK file.\n", handle->filename); | |
| 329 res = DMERR_NOT_FOUND; | |
| 330 goto error; | |
| 331 } | |
| 332 | |
| 333 // Seek to entry | |
| 334 if (fseek(dfResPackFile->file, node->offset, SEEK_SET) == -1) | |
| 335 { | |
| 336 dmError("Could not seek node position in PACK file.\n"); | |
| 337 res = DMERR_FSEEK; | |
| 338 goto error; | |
| 339 } | |
| 340 | |
| 341 // Allocate a structures and buffers | |
| 342 cbuffer = (Uint8 *) dmMalloc(DPACK_TMPSIZE); | |
| 343 if (cbuffer == NULL) | |
| 344 { | |
| 345 res = DMERR_MALLOC; | |
| 346 goto error; | |
| 347 } | |
| 348 | |
| 349 // Initialize fields | |
| 350 handle->dataOffset = 0; | |
| 351 handle->dataSize = node->size; | |
| 352 handle->data = (Uint8 *) dmMalloc(node->size); | |
| 353 if (handle->data == NULL) | |
| 354 { | |
| 355 res = DMERR_MALLOC; | |
| 356 goto error; | |
| 357 } | |
| 358 | |
| 359 // Initialize decompression | |
| 360 cstream.zalloc = (alloc_func) Z_NULL; | |
| 361 cstream.zfree = (free_func) Z_NULL; | |
| 362 cstream.opaque = (voidpf) Z_NULL; | |
| 363 cstream.next_out = handle->data; | |
| 364 cstream.avail_out = handle->dataSize; | |
| 365 cdataLeft = node->length; | |
| 366 cres = inflateInit(&(cstream)); | |
| 367 if (cres != Z_OK) | |
| 368 { | |
| 369 dmError("Could not initialize zlib stream inflation.\n"); | |
| 370 res = DMERR_INIT_FAIL; | |
| 371 goto error; | |
| 372 } | |
| 373 | |
| 374 // Uncompress the data | |
| 375 while (cdataLeft > 0 && | |
| 376 cstream.avail_out > 0 && cres == Z_OK) | |
| 377 { | |
| 378 cstream.avail_in = fread( | |
| 379 cbuffer, sizeof(Uint8), | |
| 380 (cdataLeft >= DPACK_TMPSIZE) ? DPACK_TMPSIZE : cdataLeft, | |
| 381 dfResPackFile->file); | |
| 382 | |
| 383 cdataLeft -= cstream.avail_in; | |
| 384 cstream.next_in = cbuffer; | |
| 385 cres = inflate(&cstream, Z_FULL_FLUSH); | |
| 386 } | |
| 387 | |
| 388 // Cleanup | |
| 389 inflateEnd(&(cstream)); | |
| 390 | |
| 391 error: | |
| 392 dmFree(cbuffer); | |
| 393 return res; | |
| 394 } | |
| 395 | |
| 396 | |
|
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397 static void dm_pack_fclose(DMResource * f) |
| 0 | 398 { |
| 399 f->dataSize = 0; | |
| 400 f->dataOffset = 0; | |
| 401 dmFree(f->data); | |
| 402 f->data = NULL; | |
| 403 } | |
|
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404 #endif |
| 0 | 405 |
| 406 | |
| 407 static int dm_mem_ferror(DMResource * f) | |
| 408 { | |
| 409 return f->error; | |
| 410 } | |
| 411 | |
| 412 | |
| 413 static int dm_mem_fseek(DMResource * f, const off_t offset, const int whence) | |
| 414 { | |
| 415 off_t newPos; | |
| 416 | |
| 417 // Calculate the new position | |
| 418 switch (whence) | |
| 419 { | |
| 420 case SEEK_SET: | |
| 421 newPos = offset; | |
| 422 break; | |
| 423 | |
| 424 case SEEK_CUR: | |
| 425 newPos = f->dataOffset + offset; | |
| 426 break; | |
| 427 | |
| 428 case SEEK_END: | |
| 429 newPos = f->dataSize + offset; | |
| 430 break; | |
| 431 | |
| 432 default: | |
| 433 return -1; | |
| 434 } | |
| 435 | |
| 436 // Set the new position | |
| 437 f->dataOffset = newPos; | |
| 438 | |
| 439 // Check the new position | |
| 440 if (newPos < 0 && (size_t) newPos >= f->dataSize) | |
| 441 return -1; | |
| 442 | |
| 443 return 0; | |
| 444 } | |
| 445 | |
| 446 | |
| 447 static off_t dm_mem_fsize(DMResource * f) | |
| 448 { | |
| 449 return f->dataSize; | |
| 450 } | |
| 451 | |
| 452 | |
| 453 static off_t dm_mem_ftell(DMResource * f) | |
| 454 { | |
| 455 return f->dataOffset; | |
| 456 } | |
| 457 | |
| 458 | |
| 459 static BOOL dm_mem_feof(DMResource * f) | |
| 460 { | |
| 461 // Check for EOF | |
| 462 if ((size_t) f->dataOffset <= f->dataSize) | |
| 463 return FALSE; | |
| 464 else | |
| 465 return TRUE; | |
| 466 } | |
| 467 | |
| 468 | |
| 469 static int dm_mem_fgetc(DMResource * f) | |
| 470 { | |
| 471 // Check for EOF | |
| 472 if ((size_t) f->dataOffset < f->dataSize) | |
| 473 return (int) f->data[f->dataOffset++]; | |
| 474 else | |
| 475 return EOF; | |
| 476 } | |
| 477 | |
| 478 | |
| 479 static size_t dm_mem_fread(void *buf, size_t size, size_t nmemb, DMResource * f) | |
| 480 { | |
| 481 size_t length = (size * nmemb); | |
| 482 | |
| 483 // Check if we can read the whole chunk | |
| 484 if (((size_t) f->dataOffset + length) >= f->dataSize) | |
| 485 { | |
| 486 nmemb = (f->dataSize - f->dataOffset) / size; | |
| 487 length = size * nmemb; | |
| 488 } | |
| 489 | |
| 490 memcpy(buf, f->data + f->dataOffset, length); | |
| 491 f->dataOffset += length; | |
| 492 return nmemb; | |
| 493 } | |
| 494 | |
| 495 | |
|
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496 #ifdef DM_USE_PACKFS |
| 0 | 497 DMResourceOps dfPackFileOps = |
| 498 { | |
| 499 dm_mem_ferror, | |
| 500 dm_mem_fseek, | |
| 501 dm_mem_fsize, | |
| 502 dm_mem_ftell, | |
| 503 dm_mem_feof, | |
| 504 dm_mem_fgetc, | |
|
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505 NULL, |
| 0 | 506 dm_mem_fread, |
|
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507 NULL, |
| 0 | 508 |
| 509 NULL, | |
|
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510 dm_pack_fclose, |
| 0 | 511 dm_pack_preload |
| 512 }; | |
|
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513 #endif |
| 0 | 514 |
| 515 | |
| 516 DMResourceOps dfMemIOFileOps = | |
| 517 { | |
| 518 dm_mem_ferror, | |
| 519 dm_mem_fseek, | |
| 520 dm_mem_fsize, | |
| 521 dm_mem_ftell, | |
| 522 dm_mem_feof, | |
| 523 dm_mem_fgetc, | |
|
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524 NULL, |
| 0 | 525 dm_mem_fread, |
|
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526 NULL, |
| 0 | 527 |
| 528 NULL, | |
| 529 NULL, | |
| 530 NULL | |
| 531 }; | |
| 532 | |
| 533 | |
| 534 /* FS file handling functions. These functions call the actual | |
| 535 * functions depending on where the file is located. | |
| 536 */ | |
|
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537 static void dmf_init_fops(DMResource *handle) |
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538 { |
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539 // Check fops |
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540 if (handle->fops == NULL) |
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541 { |
|
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542 #ifdef DM_USE_PACKFS |
|
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543 if (dfResFlags & DRF_USE_PACK) |
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544 handle->fops = &dfPackFileOps; |
|
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545 #ifdef DM_USE_STDIO |
|
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546 else |
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547 handle->fops = &dfStdioFileOps; |
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548 #else |
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549 handle->fops = &dfPackFileOps; |
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550 #endif |
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551 |
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552 #else |
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553 handle->fops = NULL; |
|
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554 #endif |
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555 } |
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556 } |
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557 |
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558 |
|
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559 int dmf_preload(DMResource *handle) |
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560 { |
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561 int ret = DMERR_INIT_FAIL; |
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562 |
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563 // Check if we want to preload raw data? |
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564 if (((handle->flags & DMF_PRELOAD_RAW) || |
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565 (dfResFlags & DRF_PRELOAD_ALL)) && |
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566 (handle->flags & DMF_LOADED_RAW) == 0 && |
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567 handle->fops->preload != NULL) |
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568 { |
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569 ret = handle->fops->preload(handle); |
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570 if (ret == DMERR_OK) |
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571 { |
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572 handle->flags |= DMF_LOADED_RAW; |
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573 } |
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574 } |
|
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575 else |
|
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576 { |
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577 if (handle->fops->fopen != NULL) |
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578 ret = handle->fops->fopen(handle); |
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579 else |
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580 if (handle->fops->preload != NULL) |
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581 { |
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582 ret = handle->fops->preload(handle); |
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583 if (ret == DMERR_OK) |
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584 { |
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585 handle->flags |= DMF_LOADED_RAW; |
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586 } |
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587 } |
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588 } |
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589 |
|
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590 // Check if resource data is to be preloaded |
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591 if (((handle->flags & DMF_PRELOAD_RES) || (dfResFlags & DRF_PRELOAD_RES)) && |
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592 (handle->flags & DMF_LOADED_RES) == 0 && |
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593 handle->rops != NULL && |
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594 handle->rops->load != NULL) |
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595 { |
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596 ret = handle->rops->load(handle); |
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597 if (ret == DMERR_OK) |
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598 { |
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599 // Okay, mark as loaded |
|
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600 handle->flags |= DMF_LOADED_RES; |
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601 |
|
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602 // Check if we can purge the raw data now |
|
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603 if ((handle->flags & DMF_PERSIST) == 0) |
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604 dmres_purge_raw_data(handle); |
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605 } |
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606 } |
|
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|
607 |
|
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608 return ret; |
|
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609 } |
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610 |
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611 |
| 0 | 612 DMResource *dmf_open(const char *filename) |
| 613 { | |
| 614 int ret; | |
| 615 DMResource *handle; | |
| 616 | |
| 617 // Check master directory for resource | |
| 618 if ((handle = dmres_find(filename)) == NULL) | |
| 619 { | |
|
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620 #ifdef DM_USE_STDIO |
| 0 | 621 // Hmm.. does not exist? Fall back to a stdio file |
| 622 handle = dmres_new(filename, 0, 0); | |
| 623 if (handle == NULL) | |
| 624 return NULL; | |
| 625 | |
| 626 handle->fops = &dfStdioFileOps; | |
| 627 dmres_insert(handle); | |
| 628 #else | |
| 629 // Stdio not enabled, fail | |
| 630 return NULL; | |
| 631 #endif | |
| 632 } | |
| 633 | |
|
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634 // Initialize file ops |
|
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635 dmf_init_fops(handle); |
| 0 | 636 |
| 637 // Check if the data is preloaded | |
|
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638 if (handle->flags & DMF_LOADED_RAW) |
| 0 | 639 { |
| 640 dmres_ref(handle); | |
| 641 return handle; | |
| 642 } | |
| 643 | |
|
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644 // Try preloading |
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645 ret = dmf_preload(handle); |
| 0 | 646 |
| 647 if (ret == DMERR_OK) | |
|
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648 { |
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649 dmres_ref(handle); |
| 0 | 650 return handle; |
|
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|
651 } |
| 0 | 652 |
| 653 return NULL; | |
| 654 } | |
| 655 | |
| 656 | |
| 657 DMResource * dmf_open_memio(const char *filename, Uint8 *buf, size_t len) | |
| 658 { | |
| 659 DMResource *handle; | |
| 660 | |
| 661 // Check master directory for resource | |
| 662 if ((handle = dmres_find(filename)) == NULL) | |
| 663 { | |
| 664 // Hmm.. does not exist? Fall back to a stdio file | |
|
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665 handle = dmres_new(filename, DMF_LOADED_RAW, len); |
| 0 | 666 if (handle == NULL) |
| 667 return NULL; | |
| 668 | |
| 669 handle->fops = &dfMemIOFileOps; | |
| 670 handle->data = buf; | |
| 671 dmres_insert(handle); | |
| 672 } | |
| 673 | |
| 674 // Increase refcount | |
| 675 dmres_ref(handle); | |
| 676 | |
| 677 return handle; | |
| 678 } | |
| 679 | |
| 680 | |
|
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681 #ifdef DM_USE_STDIO |
|
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682 DMResource * dmf_create_stdio(const char *filename, const char *mode) |
| 0 | 683 { |
| 684 DMResource *handle = dmres_new(filename, 0, 0); | |
| 685 if (handle == NULL) | |
| 686 return NULL; | |
| 687 | |
| 688 handle->fops = &dfStdioFileOps; | |
| 689 | |
|
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690 handle->fh = fopen(filename, mode); |
| 0 | 691 handle->error = dmGetErrno(); |
| 692 | |
| 693 if (handle->fh != NULL) | |
| 694 { | |
| 695 dmres_ref(handle); | |
| 696 return handle; | |
| 697 } | |
| 698 else | |
| 699 { | |
| 700 dmres_free(handle); | |
| 701 return NULL; | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 | |
| 706 DMResource * dmf_create_stdio_stream(FILE *fh) | |
| 707 { | |
| 708 DMResource *handle = dmres_new("", 0, 0); | |
| 709 if (handle == NULL) | |
| 710 return NULL; | |
| 711 | |
| 712 handle->fops = &dfStdioFHOps; | |
| 713 handle->fh = fh; | |
| 714 dmres_ref(handle); | |
| 715 return handle; | |
| 716 } | |
| 717 #endif | |
| 718 | |
| 719 | |
| 720 void dmf_close(DMResource * f) | |
| 721 { | |
| 722 if (f == NULL) | |
| 723 return; | |
| 724 | |
| 725 if (f->fops->fclose != NULL) | |
| 726 f->fops->fclose(f); | |
| 727 | |
| 728 dmres_unref(f); | |
| 729 } | |
| 730 | |
| 731 | |
| 732 int dmferror(DMResource * f) | |
| 733 { | |
| 734 f->atime = time(NULL); | |
| 735 return f->fops->ferror(f); | |
| 736 } | |
| 737 | |
| 738 int dmfseek(DMResource * f, off_t offset, int whence) | |
| 739 { | |
| 740 f->atime = time(NULL); | |
| 741 return f->fops->fseek(f, offset, whence); | |
| 742 } | |
| 743 | |
| 744 off_t dmfsize(DMResource * f) | |
| 745 { | |
| 746 f->atime = time(NULL); | |
| 747 return f->fops->fsize(f); | |
| 748 } | |
| 749 | |
| 750 off_t dmftell(DMResource * f) | |
| 751 { | |
| 752 f->atime = time(NULL); | |
| 753 return f->fops->ftell(f); | |
| 754 } | |
| 755 | |
| 756 BOOL dmfeof(DMResource * f) | |
| 757 { | |
| 758 f->atime = time(NULL); | |
| 759 return f->fops->feof(f); | |
| 760 } | |
| 761 | |
| 762 int dmfgetc(DMResource * f) | |
| 763 { | |
| 764 f->atime = time(NULL); | |
| 765 return f->fops->fgetc(f); | |
| 766 } | |
| 767 | |
|
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768 int dmfputc(int v, DMResource * f) |
|
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769 { |
|
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770 f->atime = time(NULL); |
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771 return f->fops->fputc(v, f); |
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772 } |
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773 |
| 0 | 774 size_t dmfread(void *ptr, size_t size, size_t nmemb, DMResource * f) |
| 775 { | |
| 776 f->atime = time(NULL); | |
| 777 return f->fops->fread(ptr, size, nmemb, f); | |
| 778 } | |
| 779 | |
|
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780 size_t dmfwrite(void *ptr, size_t size, size_t nmemb, DMResource * f) |
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781 { |
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782 f->atime = time(NULL); |
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783 return f->fops->fwrite(ptr, size, nmemb, f); |
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784 } |
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|
785 |
| 235 | 786 char *dmfgets(char *s, int size, DMResource * f) |
| 787 { | |
| 788 char *p = s, c; | |
| 789 int n = 0; | |
| 790 | |
| 791 while ((c = f->fops->fgetc(f)) != EOF) | |
| 792 { | |
|
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|
793 n++; |
| 235 | 794 if (c == '\n') |
| 795 break; | |
| 796 else | |
| 797 if (n < size - 1) | |
| 798 *p++ = c; | |
| 799 } | |
| 800 *p = 0; | |
| 801 | |
|
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802 return (n > 0) ? s : NULL; |
| 235 | 803 } |
| 804 | |
| 805 | |
| 0 | 806 |
|
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807 int dmres_ref(DMResource *node) |
| 0 | 808 { |
| 809 DMRES_LOCK(); | |
|
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810 node->atime = time(NULL); |
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811 node->refcount++; |
| 0 | 812 DMRES_UNLOCK(); |
| 813 | |
|
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814 return node->refcount; |
| 0 | 815 } |
| 816 | |
| 817 | |
|
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818 int dmres_unref(DMResource *node) |
| 0 | 819 { |
| 820 DMRES_LOCK(); | |
|
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821 node->refcount--; |
| 0 | 822 DMRES_UNLOCK(); |
| 823 | |
|
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824 return node->refcount; |
| 0 | 825 } |
| 826 | |
| 827 | |
|
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828 #define NADDFLAG(flg, ch) \ |
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829 do { \ |
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830 if ((flags & (flg)) && offs < size - 1) \ |
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831 str[offs++] = ch; \ |
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832 } while (0) |
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833 |
|
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834 void dmres_flags_to_symbolic(char *str, size_t size, int flags) |
|
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835 { |
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836 size_t offs = 0; |
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837 NADDFLAG(DMF_PRELOAD_RAW, 'r'); |
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838 NADDFLAG(DMF_PRELOAD_RES, 'e'); |
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839 NADDFLAG(DMF_PERSIST, 'p'); |
|
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840 NADDFLAG(DMF_STREAM, 's'); |
|
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841 if (offs < size) |
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|
842 str[offs] = 0; |
|
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|
843 } |
|
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844 |
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|
845 #undef NADDFLAG |
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|
846 |
|
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|
847 |
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|
848 int dmres_symbolic_to_flags(const char *str) |
|
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|
849 { |
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|
850 int offs, flags; |
|
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|
851 |
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|
852 for (flags = offs = 0; str[offs]; offs++) |
|
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|
853 switch (tolower(str[offs])) |
|
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|
854 { |
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|
855 case 'r': flags |= DMF_PRELOAD_RAW; break; |
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856 case 'e': flags |= DMF_PRELOAD_RES; break; |
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857 case 'p': flags |= DMF_PERSIST; break; |
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858 case 's': flags |= DMF_STREAM; break; |
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859 } |
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|
860 return flags; |
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|
861 } |
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|
862 |
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|
863 |
| 0 | 864 int dmres_load_resfile(const char *filename) |
| 865 { | |
| 33 | 866 int ret = DMERR_OK; |
| 0 | 867 char line[256]; |
| 868 FILE *f = fopen(filename, "r"); | |
| 869 if (f == NULL) | |
| 870 return DMERR_FOPEN; | |
| 871 | |
| 872 DMRES_LOCK(); | |
| 873 | |
| 874 while (fgets(line, sizeof(line) - 1, f) != NULL) | |
| 875 { | |
| 876 int fnstart, fsep; | |
| 877 for (fnstart = 0; isspace(line[fnstart]); fnstart++); | |
| 878 for (fsep = fnstart; line[fsep] && line[fsep] != '|'; fsep++); | |
| 879 if (line[fsep] == '|') | |
| 880 { | |
| 881 int flags, i; | |
| 882 for (i = fsep - 1; i > 0 && isspace(line[i]); i--) | |
| 883 line[i] = 0; | |
| 884 | |
| 885 for (i = fsep; isspace(line[i]); i++); | |
| 886 | |
| 887 if (sscanf(&line[i], "%x", &flags) == 1 && | |
| 888 strlen(&line[fnstart]) > 0) | |
| 889 { | |
| 890 | |
| 891 } | |
| 892 } | |
| 893 } | |
| 894 | |
| 895 DMRES_UNLOCK(); | |
| 896 fclose(f); | |
| 33 | 897 |
| 0 | 898 return ret; |
| 899 } | |
| 900 | |
| 901 | |
| 902 int dmres_write_resfile(const char *filename) | |
| 903 { | |
| 904 int ret; | |
| 905 DMResource *node; | |
| 906 FILE *f = fopen(filename, "w"); | |
| 907 if (f == NULL) | |
| 908 return DMERR_FOPEN; | |
| 909 | |
| 910 DMRES_LOCK(); | |
| 911 | |
| 912 for (node = dfResources; node != NULL; node = node->next) | |
| 913 { | |
| 914 if (fprintf(f, "%s|%08x\n", node->filename, node->flags) < 0) | |
| 915 { | |
| 916 ret = DMERR_FWRITE; | |
| 917 goto error; | |
| 918 } | |
| 919 } | |
| 920 | |
| 921 error: | |
| 922 DMRES_UNLOCK(); | |
| 923 fclose(f); | |
| 924 return ret; | |
| 925 } | |
| 926 | |
| 927 | |
| 928 /* Resources subsystem initialization and shutdown routines | |
| 929 */ | |
| 107 | 930 int dmres_init(const char *filename, const char *path, const int flags, int (*classifier)(DMResource *)) |
| 0 | 931 { |
| 932 // Check if we are already initialized | |
| 933 if (dfResInitialized) | |
| 934 return DMERR_ALREADY_INIT; | |
| 935 | |
| 936 dfResFlags = flags; | |
| 937 dfResPath = dm_strdup((path != NULL) ? path : DMRES_DATA_PATH); | |
| 938 dfResourcesMutex = dmCreateMutex(); | |
| 939 | |
| 107 | 940 |
| 0 | 941 if (flags & DRF_USE_PACK) |
| 942 { | |
|
124
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|
943 #ifdef DM_USE_PACKFS |
| 0 | 944 int ret; |
| 945 DMPackEntry *node; | |
| 946 | |
| 947 dfResPackFilename = dm_strdup((filename != NULL) ? filename : DMRES_DATA_PACK); | |
| 948 | |
| 949 // Initialize PACK, open as read-only | |
| 950 ret = dm_pack_open(dfResPackFilename, &dfResPackFile, TRUE); | |
| 951 if (ret != DMERR_OK) | |
| 952 { | |
| 953 dmError("Error opening PACK file '%s', #%i: %s\n", | |
| 954 dfResPackFilename, ret, dmErrorStr(ret)); | |
| 955 | |
| 956 return DMERR_INIT_FAIL; | |
| 957 } | |
| 958 | |
| 959 // Initialize resources from a PACK file | |
| 960 for (node = dfResPackFile->entries; node != NULL; node = node->next) | |
| 961 { | |
|
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962 DMResource *res = dmres_new(node->filename, node->resFlags & DMF_MASK, node->size); |
| 0 | 963 if (res == NULL) |
| 964 { | |
| 965 dmError("Could not allocate memory for resource node '%s' [0x%08x], %d.\n", | |
| 966 node->filename, node->resFlags, node->size); | |
| 967 return DMERR_INIT_FAIL; | |
| 968 } | |
| 969 | |
| 970 dmres_insert(res); | |
| 971 } | |
| 972 | |
| 973 #else | |
| 974 // PACK not compiled in, FAIL! | |
| 975 return DMERR_INIT_FAIL; | |
| 976 #endif | |
| 977 } | |
| 978 else | |
| 979 { | |
| 980 // Initialize resources from a resource directory | |
| 981 char *resFilename = dm_strdup_printf("%s%s", dfResPath, DMRES_RES_FILE); | |
| 982 int ret = dmres_load_resfile(resFilename); | |
| 983 dmFree(resFilename); | |
| 984 | |
| 985 if (ret != DMERR_OK) | |
| 986 return DMERR_INIT_FAIL; | |
| 987 } | |
| 988 | |
|
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989 // Okay, classify resources |
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990 if (dfResources != NULL && classifier != NULL) |
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991 { |
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992 DMResource *node; |
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993 for (node = dfResources; node != NULL; node = node->next) |
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994 { |
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995 int ret = classifier(node); |
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996 if (ret != DMERR_OK) |
| 107 | 997 return ret; |
|
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998 } |
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999 } |
| 0 | 1000 |
| 1001 // Initialization complete | |
| 1002 dfResInitialized = TRUE; | |
| 1003 return DMERR_OK; | |
| 1004 } | |
| 1005 | |
| 1006 | |
| 1007 void dmres_close(void) | |
| 1008 { | |
| 1009 DMResource *node; | |
| 1010 DMRES_LOCK(); | |
| 1011 | |
| 1012 if (!dfResInitialized) | |
| 1013 return; | |
| 1014 | |
| 1015 // Shutdown possible subsystems | |
|
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1016 #ifdef DM_USE_PACKFS |
| 0 | 1017 if (dfResFlags & DRF_USE_PACK) |
| 1018 { | |
| 1019 int res = dm_pack_close(dfResPackFile); | |
| 1020 if (res != DMERR_OK) | |
| 1021 { | |
| 1022 dmError("Error closing PACK, #%i: %s\n", | |
| 1023 res, dmErrorStr(res)); | |
| 1024 } | |
| 1025 | |
| 1026 dmFree(dfResPackFilename); | |
| 1027 } | |
| 1028 #endif | |
| 1029 | |
| 1030 // Free resource entries | |
| 1031 node = dfResources; | |
| 1032 while (node != NULL) | |
| 1033 { | |
| 1034 DMResource *next = node->next; | |
| 1035 dmres_free(node); | |
| 1036 node = next; | |
| 1037 } | |
| 1038 | |
| 1039 // Etc. | |
| 1040 dmFree(dfResPath); | |
| 1041 DMRES_UNLOCK(); | |
| 1042 dmDestroyMutex(dfResourcesMutex); | |
| 1043 dfResInitialized = FALSE; | |
| 1044 } | |
| 1045 | |
| 1046 | |
|
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1047 int dmres_preload(BOOL start, int *loaded, int *total) |
| 0 | 1048 { |
| 1049 static DMResource *dfPreload = NULL; | |
|
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1050 int ret = DMERR_OK; |
| 0 | 1051 |
| 1052 DMRES_LOCK(); | |
| 1053 | |
|
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1054 // Initialize preloading |
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1055 if (dfPreload == NULL || start) |
| 0 | 1056 { |
| 1057 DMResource *node; | |
|
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1058 |
| 0 | 1059 dfPreload = dfResources; |
| 1060 *loaded = 0; | |
| 1061 *total = 0; | |
|
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1062 |
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1063 // Calculate total number of resources to be preloaded |
| 0 | 1064 for (node = dfResources; node != NULL; node = node->next) |
| 1065 { | |
|
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1066 if ((dfResFlags & (DRF_PRELOAD_ALL | DRF_PRELOAD_RES)) || |
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1067 (node->flags & (DMF_PRELOAD_RAW | DMF_PRELOAD_RES))) |
| 0 | 1068 (*total)++; |
| 1069 } | |
| 1070 } | |
|
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1071 else |
| 0 | 1072 if (dfPreload != NULL) |
| 1073 { | |
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1074 // Initialize fops and preload |
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1075 dmf_init_fops(dfPreload); |
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1076 if ((ret = dmf_preload(dfPreload)) != DMERR_OK) |
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1077 goto error; |
|
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1078 |
|
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1079 (*loaded)++; |
| 0 | 1080 dfPreload = dfPreload->next; |
| 1081 } | |
| 1082 | |
| 1083 DMRES_UNLOCK(); | |
|
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1084 return (dfPreload == NULL) ? DMERR_OK : DMERR_PROGRESS; |
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1085 |
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1086 error: |
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1087 DMRES_UNLOCK(); |
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1088 return ret; |
| 0 | 1089 } |
| 1090 | |
| 1091 | |
| 1092 void dmres_prune(int agems, int flags) | |
| 1093 { | |
|
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1094 DMResource *node; |
| 0 | 1095 int currtime = time(NULL); |
| 1096 DMRES_LOCK(); | |
| 1097 | |
|
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1098 for (node = dfResources; node != NULL; node = node->next) |
| 0 | 1099 { |
| 1100 // Check if node has refcount of 0 and is | |
| 1101 // not marked as persistent resource | |
|
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1102 if (node->refcount == 0 && |
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1103 (node->flags & DMF_PERSIST) == 0 && |
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1104 (node->flags & (DMF_LOADED_RES | DMF_LOADED_RAW))) |
| 0 | 1105 { |
| 1106 // Check if we match either one of atime or mtime | |
| 1107 if (((flags & DMPRUNE_ATIME) && | |
| 1108 currtime - node->atime >= agems) || | |
| 1109 ((flags & DMPRUNE_MTIME) && | |
| 1110 currtime - node->mtime >= agems)) | |
| 1111 { | |
|
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1112 dmres_free_res_data(node); |
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1113 dmres_free_raw_data(node); |
| 0 | 1114 } |
| 1115 } | |
| 1116 } | |
| 1117 | |
| 1118 DMRES_UNLOCK(); | |
| 1119 } | |
| 1120 | |
| 1121 | |
| 1122 /* Helper resource access routines | |
| 1123 */ | |
| 1124 int dmf_read_str(DMResource *f, Uint8 *s, size_t l) | |
| 1125 { | |
| 1126 return dmfread(s, sizeof(Uint8), l, f) == l; | |
| 1127 } | |
| 1128 | |
| 1129 | |
| 1130 #define DM_DEFINE_FUNC(xname, xtype, xmacro) \ | |
| 1131 BOOL dmf_read_ ## xname (DMResource *f, xtype *v) { \ | |
| 1132 xtype result; \ | |
| 1133 if (dmfread(&result, sizeof( xtype ), 1, f) != 1) \ | |
| 1134 return FALSE; \ | |
| 1135 *v = DM_ ## xmacro ## _TO_NATIVE (result); \ | |
| 1136 return TRUE; \ | |
| 1137 } | |
| 1138 | |
| 1139 DM_DEFINE_FUNC(le16, Uint16, LE16) | |
| 1140 DM_DEFINE_FUNC(le32, Uint32, LE32) | |
| 1141 | |
| 1142 DM_DEFINE_FUNC(be16, Uint16, BE16) | |
| 1143 DM_DEFINE_FUNC(be32, Uint32, BE32) | |
| 1144 | |
| 1145 #ifdef DM_HAVE_64BIT | |
| 1146 DM_DEFINE_FUNC(le64, Uint64, LE64) | |
| 1147 DM_DEFINE_FUNC(be64, Uint64, BE64) | |
| 1148 #endif |