Mercurial > hg > dmlib
annotate dmres.c @ 59:c560703e85ed
Add resource writing functions (only work for stdio backend)
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 01 Oct 2012 07:51:08 +0300 |
| parents | b2fe4301384d |
| children | be6160981428 |
| 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 #if !defined(DMRES_PACKFS) && !defined(DMRES_STDIO) | |
| 11 #error At least one of DMRES_PACKFS, DMRES_STDIO must be defined. | |
| 12 #endif | |
| 13 | |
| 14 #define DMRES_LOCK(x) dmMutexLock(dfResourcesMutex) | |
| 15 #define DMRES_UNLOCK(x) dmMutexUnlock(dfResourcesMutex) | |
| 16 | |
| 17 | |
| 18 /* Global variables | |
| 19 */ | |
| 20 static BOOL dfResInitialized = FALSE; | |
| 21 static int dfResFlags = 0; | |
| 22 static char * dfResPath = NULL; | |
| 23 DMResource * dfResources = NULL; | |
| 24 DMMutex * dfResourcesMutex = NULL; | |
| 25 | |
| 26 | |
| 27 #ifdef DMRES_PACKFS | |
| 28 static DMPackFile *dfResPackFile = NULL; | |
| 29 static char * dfResPackFilename = NULL; | |
| 30 #endif | |
| 31 | |
| 32 | |
| 33 DMResource *dmres_new(const char *filename, int flags, size_t size) | |
| 34 { | |
|
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35 DMResource *node = dmMalloc0(sizeof(DMResource)); |
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36 if (node == NULL) |
| 0 | 37 return NULL; |
| 38 | |
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39 node->filename = dm_strdup(filename); |
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40 node->flags = flags; |
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41 node->dataSize = size; |
| 0 | 42 |
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43 return node; |
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44 } |
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45 |
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46 |
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47 void dmres_free_res_data(DMResource *node) |
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48 { |
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49 if (node->rdata != NULL && |
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50 node->rops != NULL && |
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51 node->rops->free != NULL) |
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52 { |
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53 node->rops->free(node); |
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54 } |
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55 |
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56 node->rdata = NULL; |
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57 node->flags &= !DMF_LOADED_RES; |
| 0 | 58 } |
| 59 | |
| 60 | |
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61 void dmres_free_raw_data(DMResource *node) |
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62 { |
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63 dmFree(node->data); |
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64 node->data = NULL; |
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65 node->flags &= !DMF_LOADED_RAW; |
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66 } |
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67 |
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68 |
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69 void dmres_purge_raw_data(DMResource *node) |
| 0 | 70 { |
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71 if ((node->flags & DMF_PRELOAD_RAW) == 0 && |
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72 (node->flags & DMF_LOADED_RAW) && |
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73 node->data != NULL) |
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74 dmres_free_raw_data(node); |
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75 } |
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76 |
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77 |
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78 void dmres_free(DMResource *node) |
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79 { |
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80 if (node != NULL) |
| 0 | 81 { |
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82 dmres_free_res_data(node); |
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83 dmres_free_raw_data(node); |
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84 dmFree(node->filename); |
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85 dmFree(node); |
| 0 | 86 } |
| 87 } | |
| 88 | |
| 89 | |
| 90 void dmres_insert(DMResource * node) | |
| 91 { | |
| 92 if (dfResources != NULL) | |
| 93 { | |
| 94 node->prev = dfResources->prev; | |
| 95 dfResources->prev->next = node; | |
| 96 dfResources->prev = node; | |
| 97 } | |
| 98 else | |
| 99 { | |
| 100 dfResources = node->prev = node; | |
| 101 } | |
| 102 | |
| 103 node->next = NULL; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 void dmres_delete(DMResource * node) | |
| 108 { | |
| 109 if (node->prev) | |
| 110 node->prev->next = node->next; | |
| 111 | |
| 112 if (node->next) | |
| 113 node->next->prev = node->prev; | |
| 114 else | |
| 115 dfResources->prev = node->prev; | |
| 116 | |
| 117 node->prev = node->next = NULL; | |
| 118 } | |
| 119 | |
| 120 | |
| 121 DMResource * dmres_find(const char *filename) | |
| 122 { | |
| 123 DMResource *node, *found = NULL; | |
| 124 | |
| 125 DMRES_LOCK(); | |
| 126 | |
| 127 for (node = dfResources; node != NULL; node = node->next) | |
| 128 { | |
| 129 if (strcmp(node->filename, filename) == 0) | |
| 130 { | |
| 131 found = node; | |
| 132 break; | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 DMRES_UNLOCK(); | |
| 137 | |
| 138 return found; | |
| 139 } | |
| 140 | |
| 141 | |
| 142 #ifdef DMRES_STDIO | |
| 143 /* Basic stdio file routines | |
| 144 */ | |
| 145 static int dm_stdio_fopen(DMResource *handle) | |
| 146 { | |
| 147 char *rfilename = dm_strdup_printf("%s%s", DMRES_DATA_PATH, handle->filename); | |
| 148 if (rfilename == NULL) | |
| 149 return DMERR_MALLOC; | |
| 150 | |
| 151 handle->fh = fopen(rfilename, "rb"); | |
| 152 dmFree(rfilename); | |
| 153 | |
| 154 handle->error = dmGetErrno(); | |
| 155 return (handle->fh != NULL) ? DMERR_OK : DMERR_FOPEN; | |
| 156 } | |
| 157 | |
| 158 | |
| 159 static void dm_stdio_fclose(DMResource * f) | |
| 160 { | |
| 161 if (f->fh != NULL) | |
| 162 { | |
| 163 fclose(f->fh); | |
| 164 f->fh = NULL; | |
| 165 } | |
| 166 } | |
| 167 | |
| 168 | |
| 169 static int dm_stdio_ferror(DMResource * f) | |
| 170 { | |
| 171 return f->error; | |
| 172 } | |
| 173 | |
| 174 | |
| 175 static int dm_stdio_fseek(DMResource *f, const off_t pos, const int whence) | |
| 176 { | |
| 177 int ret = fseek(f->fh, pos, whence); | |
| 178 f->error = dmGetErrno(); | |
| 179 return ret; | |
| 180 } | |
| 181 | |
| 182 | |
| 183 static off_t dm_stdio_fsize(DMResource *f) | |
| 184 { | |
| 185 off_t savePos, fileSize; | |
| 186 | |
| 187 // Check if the size is cached | |
| 188 if (f->dataSize != 0) | |
| 189 return f->dataSize; | |
| 190 | |
| 191 // Get file size | |
| 192 savePos = ftell(f->fh); | |
| 193 if (fseek(f->fh, 0L, SEEK_END) != 0) | |
| 194 { | |
| 195 f->error = dmGetErrno(); | |
| 196 return -1; | |
| 197 } | |
| 198 | |
| 199 fileSize = ftell(f->fh); | |
| 200 if (fseek(f->fh, savePos, SEEK_SET) != 0) | |
| 201 { | |
| 202 f->error = dmGetErrno(); | |
| 203 return -1; | |
| 204 } | |
| 205 | |
| 206 f->dataSize = fileSize; | |
| 207 return fileSize; | |
| 208 } | |
| 209 | |
| 210 | |
| 211 static off_t dm_stdio_ftell(DMResource * f) | |
| 212 { | |
| 213 return ftell(f->fh); | |
| 214 } | |
| 215 | |
| 216 | |
| 217 static BOOL dm_stdio_feof(DMResource * f) | |
| 218 { | |
| 219 return feof(f->fh); | |
| 220 } | |
| 221 | |
| 222 | |
| 223 static int dm_stdio_fgetc(DMResource * f) | |
| 224 { | |
| 225 int ret = fgetc(f->fh); | |
| 226 f->error = dmGetErrno(); | |
| 227 return ret; | |
| 228 } | |
| 229 | |
| 230 | |
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231 static int dm_stdio_fputc(int v, DMResource * f) |
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232 { |
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233 int ret = fputc(v, f->fh); |
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234 f->error = dmGetErrno(); |
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235 return ret; |
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236 } |
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237 |
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238 |
| 0 | 239 static size_t dm_stdio_fread(void *ptr, size_t size, size_t nmemb, DMResource * f) |
| 240 { | |
| 241 size_t ret = fread(ptr, size, nmemb, f->fh); | |
| 242 f->error = dmGetErrno(); | |
| 243 return ret; | |
| 244 } | |
| 245 | |
| 246 | |
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247 static size_t dm_stdio_fwrite(void *ptr, size_t size, size_t nmemb, DMResource * f) |
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248 { |
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249 size_t ret = fwrite(ptr, size, nmemb, f->fh); |
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250 f->error = dmGetErrno(); |
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251 return ret; |
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252 } |
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253 |
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254 |
| 0 | 255 static int dm_stdio_preload(DMResource *handle) |
| 256 { | |
| 257 int ret = dm_stdio_fopen(handle); | |
| 258 if (ret != DMERR_OK) | |
| 259 return ret; | |
| 260 | |
| 261 dm_stdio_fsize(handle); | |
| 262 | |
| 263 handle->data = dmMalloc(handle->dataSize); | |
| 264 if (handle->data == NULL) | |
| 265 return DMERR_MALLOC; | |
| 266 | |
| 267 if (dm_stdio_fread(handle->data, sizeof(Uint8), handle->dataSize, handle) != handle->dataSize) | |
| 268 return DMERR_FREAD; | |
| 269 | |
| 270 return DMERR_OK; | |
| 271 } | |
| 272 | |
| 273 | |
| 274 DMResourceOps dfStdioFileOps = | |
| 275 { | |
| 276 dm_stdio_ferror, | |
| 277 dm_stdio_fseek, | |
| 278 dm_stdio_fsize, | |
| 279 dm_stdio_ftell, | |
| 280 dm_stdio_feof, | |
| 281 dm_stdio_fgetc, | |
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282 dm_stdio_fputc, |
| 0 | 283 dm_stdio_fread, |
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284 dm_stdio_fwrite, |
| 0 | 285 |
| 286 dm_stdio_fopen, | |
| 287 dm_stdio_fclose, | |
| 288 dm_stdio_preload | |
| 289 }; | |
| 290 | |
| 291 DMResourceOps dfStdioFHOps = | |
| 292 { | |
| 293 dm_stdio_ferror, | |
| 294 dm_stdio_fseek, | |
| 295 dm_stdio_fsize, | |
| 296 dm_stdio_ftell, | |
| 297 dm_stdio_feof, | |
| 298 dm_stdio_fgetc, | |
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299 dm_stdio_fputc, |
| 0 | 300 dm_stdio_fread, |
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301 dm_stdio_fwrite, |
| 0 | 302 |
| 303 NULL, | |
| 304 NULL, | |
| 305 NULL | |
| 306 }; | |
| 307 #endif | |
| 308 | |
| 309 | |
| 310 // Some mingw/windows headers define these as macros, which is bad for us | |
| 311 #ifdef __WIN32 | |
| 312 #undef ferror | |
| 313 #undef feof | |
| 314 #endif | |
| 315 | |
| 316 | |
| 317 /* | |
| 318 * PACK file routines | |
| 319 */ | |
| 320 #ifdef DMRES_PACKFS | |
| 321 static int dm_pack_preload(DMResource *handle) | |
| 322 { | |
| 323 DMPackEntry *node; | |
| 324 int res = DMERR_OK, cres, cdataLeft; | |
| 325 z_stream cstream; | |
| 326 Uint8 * cbuffer = NULL; | |
| 327 | |
| 328 // Search PACK nodelist for file | |
| 329 if ((node = dm_pack_find(dfResPackFile->entries, handle->filename)) == NULL) | |
| 330 { | |
| 331 dmError("Entry '%s' not found in PACK file.\n", handle->filename); | |
| 332 res = DMERR_NOT_FOUND; | |
| 333 goto error; | |
| 334 } | |
| 335 | |
| 336 // Seek to entry | |
| 337 if (fseek(dfResPackFile->file, node->offset, SEEK_SET) == -1) | |
| 338 { | |
| 339 dmError("Could not seek node position in PACK file.\n"); | |
| 340 res = DMERR_FSEEK; | |
| 341 goto error; | |
| 342 } | |
| 343 | |
| 344 // Allocate a structures and buffers | |
| 345 cbuffer = (Uint8 *) dmMalloc(DPACK_TMPSIZE); | |
| 346 if (cbuffer == NULL) | |
| 347 { | |
| 348 res = DMERR_MALLOC; | |
| 349 goto error; | |
| 350 } | |
| 351 | |
| 352 // Initialize fields | |
| 353 handle->dataOffset = 0; | |
| 354 handle->dataSize = node->size; | |
| 355 handle->data = (Uint8 *) dmMalloc(node->size); | |
| 356 if (handle->data == NULL) | |
| 357 { | |
| 358 res = DMERR_MALLOC; | |
| 359 goto error; | |
| 360 } | |
| 361 | |
| 362 // Initialize decompression | |
| 363 cstream.zalloc = (alloc_func) Z_NULL; | |
| 364 cstream.zfree = (free_func) Z_NULL; | |
| 365 cstream.opaque = (voidpf) Z_NULL; | |
| 366 cstream.next_out = handle->data; | |
| 367 cstream.avail_out = handle->dataSize; | |
| 368 cdataLeft = node->length; | |
| 369 cres = inflateInit(&(cstream)); | |
| 370 if (cres != Z_OK) | |
| 371 { | |
| 372 dmError("Could not initialize zlib stream inflation.\n"); | |
| 373 res = DMERR_INIT_FAIL; | |
| 374 goto error; | |
| 375 } | |
| 376 | |
| 377 // Uncompress the data | |
| 378 while (cdataLeft > 0 && | |
| 379 cstream.avail_out > 0 && cres == Z_OK) | |
| 380 { | |
| 381 cstream.avail_in = fread( | |
| 382 cbuffer, sizeof(Uint8), | |
| 383 (cdataLeft >= DPACK_TMPSIZE) ? DPACK_TMPSIZE : cdataLeft, | |
| 384 dfResPackFile->file); | |
| 385 | |
| 386 cdataLeft -= cstream.avail_in; | |
| 387 cstream.next_in = cbuffer; | |
| 388 cres = inflate(&cstream, Z_FULL_FLUSH); | |
| 389 } | |
| 390 | |
| 391 // Cleanup | |
| 392 inflateEnd(&(cstream)); | |
| 393 | |
| 394 error: | |
| 395 dmFree(cbuffer); | |
| 396 return res; | |
| 397 } | |
| 398 #endif | |
| 399 | |
| 400 | |
| 401 static void dm_mem_fclose(DMResource * f) | |
| 402 { | |
| 403 f->dataSize = 0; | |
| 404 f->dataOffset = 0; | |
| 405 dmFree(f->data); | |
| 406 f->data = NULL; | |
| 407 } | |
| 408 | |
| 409 | |
| 410 static int dm_mem_ferror(DMResource * f) | |
| 411 { | |
| 412 return f->error; | |
| 413 } | |
| 414 | |
| 415 | |
| 416 static int dm_mem_fseek(DMResource * f, const off_t offset, const int whence) | |
| 417 { | |
| 418 off_t newPos; | |
| 419 | |
| 420 // Calculate the new position | |
| 421 switch (whence) | |
| 422 { | |
| 423 case SEEK_SET: | |
| 424 newPos = offset; | |
| 425 break; | |
| 426 | |
| 427 case SEEK_CUR: | |
| 428 newPos = f->dataOffset + offset; | |
| 429 break; | |
| 430 | |
| 431 case SEEK_END: | |
| 432 newPos = f->dataSize + offset; | |
| 433 break; | |
| 434 | |
| 435 default: | |
| 436 return -1; | |
| 437 } | |
| 438 | |
| 439 // Set the new position | |
| 440 f->dataOffset = newPos; | |
| 441 | |
| 442 // Check the new position | |
| 443 if (newPos < 0 && (size_t) newPos >= f->dataSize) | |
| 444 return -1; | |
| 445 | |
| 446 return 0; | |
| 447 } | |
| 448 | |
| 449 | |
| 450 static off_t dm_mem_fsize(DMResource * f) | |
| 451 { | |
| 452 return f->dataSize; | |
| 453 } | |
| 454 | |
| 455 | |
| 456 static off_t dm_mem_ftell(DMResource * f) | |
| 457 { | |
| 458 return f->dataOffset; | |
| 459 } | |
| 460 | |
| 461 | |
| 462 static BOOL dm_mem_feof(DMResource * f) | |
| 463 { | |
| 464 // Check for EOF | |
| 465 if ((size_t) f->dataOffset <= f->dataSize) | |
| 466 return FALSE; | |
| 467 else | |
| 468 return TRUE; | |
| 469 } | |
| 470 | |
| 471 | |
| 472 static int dm_mem_fgetc(DMResource * f) | |
| 473 { | |
| 474 // Check for EOF | |
| 475 if ((size_t) f->dataOffset < f->dataSize) | |
| 476 return (int) f->data[f->dataOffset++]; | |
| 477 else | |
| 478 return EOF; | |
| 479 } | |
| 480 | |
| 481 | |
| 482 static size_t dm_mem_fread(void *buf, size_t size, size_t nmemb, DMResource * f) | |
| 483 { | |
| 484 size_t length = (size * nmemb); | |
| 485 | |
| 486 // Check if we can read the whole chunk | |
| 487 if (((size_t) f->dataOffset + length) >= f->dataSize) | |
| 488 { | |
| 489 nmemb = (f->dataSize - f->dataOffset) / size; | |
| 490 length = size * nmemb; | |
| 491 } | |
| 492 | |
| 493 memcpy(buf, f->data + f->dataOffset, length); | |
| 494 f->dataOffset += length; | |
| 495 return nmemb; | |
| 496 } | |
| 497 | |
| 498 | |
| 499 DMResourceOps dfPackFileOps = | |
| 500 { | |
| 501 dm_mem_ferror, | |
| 502 dm_mem_fseek, | |
| 503 dm_mem_fsize, | |
| 504 dm_mem_ftell, | |
| 505 dm_mem_feof, | |
| 506 dm_mem_fgetc, | |
|
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507 NULL, |
| 0 | 508 dm_mem_fread, |
|
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509 NULL, |
| 0 | 510 |
| 511 NULL, | |
| 512 dm_mem_fclose, | |
| 513 dm_pack_preload | |
| 514 }; | |
| 515 | |
| 516 | |
| 517 DMResourceOps dfMemIOFileOps = | |
| 518 { | |
| 519 dm_mem_ferror, | |
| 520 dm_mem_fseek, | |
| 521 dm_mem_fsize, | |
| 522 dm_mem_ftell, | |
| 523 dm_mem_feof, | |
| 524 dm_mem_fgetc, | |
|
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525 NULL, |
| 0 | 526 dm_mem_fread, |
|
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527 NULL, |
| 0 | 528 |
| 529 NULL, | |
| 530 NULL, | |
| 531 NULL | |
| 532 }; | |
| 533 | |
| 534 | |
| 535 /* FS file handling functions. These functions call the actual | |
| 536 * functions depending on where the file is located. | |
| 537 */ | |
|
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538 static void dmf_init_fops(DMResource *handle) |
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539 { |
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540 // Check fops |
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541 if (handle->fops == NULL) |
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542 { |
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543 #ifdef DMRES_PACKFS |
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544 if (dfResFlags & DRF_USE_PACK) |
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545 handle->fops = &dfPackFileOps; |
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546 #ifdef DMRES_STDIO |
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547 else |
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548 handle->fops = &dfStdioFileOps; |
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549 #else |
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550 handle->fops = &dfPackFileOps; |
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551 #endif |
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552 |
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553 #else |
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554 handle->fops = &dfStdioFileOps; |
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555 #endif |
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556 } |
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557 } |
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558 |
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559 |
|
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560 int dmf_preload(DMResource *handle) |
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561 { |
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562 int ret = DMERR_INIT_FAIL; |
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563 |
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564 // Check if we want to preload raw data? |
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565 if (((handle->flags & DMF_PRELOAD_RAW) || |
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566 (dfResFlags & DRF_PRELOAD_ALL)) && |
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567 (handle->flags & DMF_LOADED_RAW) == 0 && |
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568 handle->fops->preload != NULL) |
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569 { |
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570 ret = handle->fops->preload(handle); |
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571 if (ret == DMERR_OK) |
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572 { |
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573 handle->flags |= DMF_LOADED_RAW; |
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574 } |
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575 } |
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576 else |
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577 { |
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578 if (handle->fops->fopen != NULL) |
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579 ret = handle->fops->fopen(handle); |
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580 else |
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581 if (handle->fops->preload != NULL) |
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582 { |
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583 ret = handle->fops->preload(handle); |
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584 if (ret == DMERR_OK) |
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585 { |
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586 handle->flags |= DMF_LOADED_RAW; |
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587 } |
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588 } |
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589 } |
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590 |
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591 // Check if resource data is to be preloaded |
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592 if (((handle->flags & DMF_PRELOAD_RES) || (dfResFlags & DRF_PRELOAD_RES)) && |
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593 (handle->flags & DMF_LOADED_RES) == 0 && |
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594 handle->rops != NULL && |
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595 handle->rops->load != NULL) |
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596 { |
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597 ret = handle->rops->load(handle); |
|
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598 if (ret == DMERR_OK) |
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599 { |
|
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600 // Okay, mark as loaded |
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601 handle->flags |= DMF_LOADED_RES; |
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602 |
|
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603 // Check if we can purge the raw data now |
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604 if ((handle->flags & DMF_PERSIST) == 0) |
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605 dmres_purge_raw_data(handle); |
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606 } |
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607 } |
|
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608 |
|
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609 return ret; |
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610 } |
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611 |
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612 |
| 0 | 613 DMResource *dmf_open(const char *filename) |
| 614 { | |
| 615 int ret; | |
| 616 DMResource *handle; | |
| 617 | |
| 618 // Check master directory for resource | |
| 619 if ((handle = dmres_find(filename)) == NULL) | |
| 620 { | |
| 621 #ifdef DMRES_STDIO | |
| 622 // Hmm.. does not exist? Fall back to a stdio file | |
| 623 handle = dmres_new(filename, 0, 0); | |
| 624 if (handle == NULL) | |
| 625 return NULL; | |
| 626 | |
| 627 handle->fops = &dfStdioFileOps; | |
| 628 dmres_insert(handle); | |
| 629 #else | |
| 630 // Stdio not enabled, fail | |
| 631 return NULL; | |
| 632 #endif | |
| 633 } | |
| 634 | |
|
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635 // Initialize file ops |
|
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636 dmf_init_fops(handle); |
| 0 | 637 |
| 638 // Check if the data is preloaded | |
|
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639 if (handle->flags & DMF_LOADED_RAW) |
| 0 | 640 { |
| 641 dmres_ref(handle); | |
| 642 return handle; | |
| 643 } | |
| 644 | |
|
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645 // Try preloading |
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646 ret = dmf_preload(handle); |
| 0 | 647 |
| 648 if (ret == DMERR_OK) | |
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649 { |
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650 dmres_ref(handle); |
| 0 | 651 return handle; |
|
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652 } |
| 0 | 653 |
| 654 return NULL; | |
| 655 } | |
| 656 | |
| 657 | |
| 658 DMResource * dmf_open_memio(const char *filename, Uint8 *buf, size_t len) | |
| 659 { | |
| 660 DMResource *handle; | |
| 661 | |
| 662 // Check master directory for resource | |
| 663 if ((handle = dmres_find(filename)) == NULL) | |
| 664 { | |
| 665 // Hmm.. does not exist? Fall back to a stdio file | |
|
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666 handle = dmres_new(filename, DMF_LOADED_RAW, len); |
| 0 | 667 if (handle == NULL) |
| 668 return NULL; | |
| 669 | |
| 670 handle->fops = &dfMemIOFileOps; | |
| 671 handle->data = buf; | |
| 672 dmres_insert(handle); | |
| 673 } | |
| 674 | |
| 675 // Increase refcount | |
| 676 dmres_ref(handle); | |
| 677 | |
| 678 return handle; | |
| 679 } | |
| 680 | |
| 681 | |
| 682 #ifdef DMRES_STDIO | |
| 683 DMResource * dmf_create_stdio(const char *filename) | |
| 684 { | |
| 685 DMResource *handle = dmres_new(filename, 0, 0); | |
| 686 if (handle == NULL) | |
| 687 return NULL; | |
| 688 | |
| 689 handle->fops = &dfStdioFileOps; | |
| 690 | |
| 691 handle->fh = fopen(filename, "rb"); | |
| 692 handle->error = dmGetErrno(); | |
| 693 | |
| 694 if (handle->fh != NULL) | |
| 695 { | |
| 696 dmres_ref(handle); | |
| 697 return handle; | |
| 698 } | |
| 699 else | |
| 700 { | |
| 701 dmres_free(handle); | |
| 702 return NULL; | |
| 703 } | |
| 704 } | |
| 705 | |
| 706 | |
| 707 DMResource * dmf_create_stdio_stream(FILE *fh) | |
| 708 { | |
| 709 DMResource *handle = dmres_new("", 0, 0); | |
| 710 if (handle == NULL) | |
| 711 return NULL; | |
| 712 | |
| 713 handle->fops = &dfStdioFHOps; | |
| 714 handle->fh = fh; | |
| 715 dmres_ref(handle); | |
| 716 return handle; | |
| 717 } | |
| 718 #endif | |
| 719 | |
| 720 | |
| 721 void dmf_close(DMResource * f) | |
| 722 { | |
| 723 if (f == NULL) | |
| 724 return; | |
| 725 | |
| 726 if (f->fops->fclose != NULL) | |
| 727 f->fops->fclose(f); | |
| 728 | |
| 729 dmres_unref(f); | |
| 730 } | |
| 731 | |
| 732 | |
| 733 int dmferror(DMResource * f) | |
| 734 { | |
| 735 f->atime = time(NULL); | |
| 736 return f->fops->ferror(f); | |
| 737 } | |
| 738 | |
| 739 int dmfseek(DMResource * f, off_t offset, int whence) | |
| 740 { | |
| 741 f->atime = time(NULL); | |
| 742 return f->fops->fseek(f, offset, whence); | |
| 743 } | |
| 744 | |
| 745 off_t dmfsize(DMResource * f) | |
| 746 { | |
| 747 f->atime = time(NULL); | |
| 748 return f->fops->fsize(f); | |
| 749 } | |
| 750 | |
| 751 off_t dmftell(DMResource * f) | |
| 752 { | |
| 753 f->atime = time(NULL); | |
| 754 return f->fops->ftell(f); | |
| 755 } | |
| 756 | |
| 757 BOOL dmfeof(DMResource * f) | |
| 758 { | |
| 759 f->atime = time(NULL); | |
| 760 return f->fops->feof(f); | |
| 761 } | |
| 762 | |
| 763 int dmfgetc(DMResource * f) | |
| 764 { | |
| 765 f->atime = time(NULL); | |
| 766 return f->fops->fgetc(f); | |
| 767 } | |
| 768 | |
| 769 size_t dmfread(void *ptr, size_t size, size_t nmemb, DMResource * f) | |
| 770 { | |
| 771 f->atime = time(NULL); | |
| 772 return f->fops->fread(ptr, size, nmemb, f); | |
| 773 } | |
| 774 | |
| 775 | |
|
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776 int dmres_ref(DMResource *node) |
| 0 | 777 { |
| 778 DMRES_LOCK(); | |
|
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779 node->atime = time(NULL); |
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780 node->refcount++; |
| 0 | 781 DMRES_UNLOCK(); |
| 782 | |
|
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783 return node->refcount; |
| 0 | 784 } |
| 785 | |
| 786 | |
|
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787 int dmres_unref(DMResource *node) |
| 0 | 788 { |
| 789 DMRES_LOCK(); | |
|
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790 node->refcount--; |
| 0 | 791 DMRES_UNLOCK(); |
| 792 | |
|
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793 return node->refcount; |
| 0 | 794 } |
| 795 | |
| 796 | |
| 797 int dmres_load_resfile(const char *filename) | |
| 798 { | |
| 33 | 799 int ret = DMERR_OK; |
| 0 | 800 char line[256]; |
| 801 FILE *f = fopen(filename, "r"); | |
| 802 if (f == NULL) | |
| 803 return DMERR_FOPEN; | |
| 804 | |
| 805 DMRES_LOCK(); | |
| 806 | |
| 807 while (fgets(line, sizeof(line) - 1, f) != NULL) | |
| 808 { | |
| 809 int fnstart, fsep; | |
| 810 for (fnstart = 0; isspace(line[fnstart]); fnstart++); | |
| 811 for (fsep = fnstart; line[fsep] && line[fsep] != '|'; fsep++); | |
| 812 if (line[fsep] == '|') | |
| 813 { | |
| 814 int flags, i; | |
| 815 for (i = fsep - 1; i > 0 && isspace(line[i]); i--) | |
| 816 line[i] = 0; | |
| 817 | |
| 818 for (i = fsep; isspace(line[i]); i++); | |
| 819 | |
| 820 if (sscanf(&line[i], "%x", &flags) == 1 && | |
| 821 strlen(&line[fnstart]) > 0) | |
| 822 { | |
| 823 | |
| 824 } | |
| 825 } | |
| 826 } | |
| 827 | |
| 828 DMRES_UNLOCK(); | |
| 829 fclose(f); | |
| 33 | 830 |
| 0 | 831 return ret; |
| 832 } | |
| 833 | |
| 834 | |
| 835 int dmres_write_resfile(const char *filename) | |
| 836 { | |
| 837 int ret; | |
| 838 DMResource *node; | |
| 839 FILE *f = fopen(filename, "w"); | |
| 840 if (f == NULL) | |
| 841 return DMERR_FOPEN; | |
| 842 | |
| 843 DMRES_LOCK(); | |
| 844 | |
| 845 for (node = dfResources; node != NULL; node = node->next) | |
| 846 { | |
| 847 if (fprintf(f, "%s|%08x\n", node->filename, node->flags) < 0) | |
| 848 { | |
| 849 ret = DMERR_FWRITE; | |
| 850 goto error; | |
| 851 } | |
| 852 } | |
| 853 | |
| 854 error: | |
| 855 DMRES_UNLOCK(); | |
| 856 fclose(f); | |
| 857 return ret; | |
| 858 } | |
| 859 | |
| 860 | |
| 861 /* Resources subsystem initialization and shutdown routines | |
| 862 */ | |
|
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863 int dmres_init(const char *filename, const char *path, int flags, int (*classifier)(DMResource *)) |
| 0 | 864 { |
| 865 // Check if we are already initialized | |
| 866 if (dfResInitialized) | |
| 867 return DMERR_ALREADY_INIT; | |
| 868 | |
| 869 dfResFlags = flags; | |
| 870 dfResPath = dm_strdup((path != NULL) ? path : DMRES_DATA_PATH); | |
| 871 dfResourcesMutex = dmCreateMutex(); | |
| 872 | |
| 873 if (flags & DRF_USE_PACK) | |
| 874 { | |
| 875 #ifdef DMRES_PACKFS | |
| 876 int ret; | |
| 877 DMPackEntry *node; | |
| 878 | |
| 879 dfResPackFilename = dm_strdup((filename != NULL) ? filename : DMRES_DATA_PACK); | |
| 880 | |
| 881 // Initialize PACK, open as read-only | |
| 882 ret = dm_pack_open(dfResPackFilename, &dfResPackFile, TRUE); | |
| 883 if (ret != DMERR_OK) | |
| 884 { | |
| 885 dmError("Error opening PACK file '%s', #%i: %s\n", | |
| 886 dfResPackFilename, ret, dmErrorStr(ret)); | |
| 887 | |
| 888 return DMERR_INIT_FAIL; | |
| 889 } | |
| 890 | |
| 891 // Initialize resources from a PACK file | |
| 892 for (node = dfResPackFile->entries; node != NULL; node = node->next) | |
| 893 { | |
|
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894 DMResource *res = dmres_new(node->filename, node->resFlags & DMF_MASK, node->size); |
| 0 | 895 if (res == NULL) |
| 896 { | |
| 897 dmError("Could not allocate memory for resource node '%s' [0x%08x], %d.\n", | |
| 898 node->filename, node->resFlags, node->size); | |
| 899 return DMERR_INIT_FAIL; | |
| 900 } | |
| 901 | |
| 902 dmres_insert(res); | |
| 903 } | |
| 904 | |
| 905 #else | |
| 906 // PACK not compiled in, FAIL! | |
| 907 return DMERR_INIT_FAIL; | |
| 908 #endif | |
| 909 } | |
| 910 else | |
| 911 { | |
| 912 // Initialize resources from a resource directory | |
| 913 char *resFilename = dm_strdup_printf("%s%s", dfResPath, DMRES_RES_FILE); | |
| 914 int ret = dmres_load_resfile(resFilename); | |
| 915 dmFree(resFilename); | |
| 916 | |
| 917 if (ret != DMERR_OK) | |
| 918 return DMERR_INIT_FAIL; | |
| 919 } | |
| 920 | |
|
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921 // Okay, classify resources |
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922 if (dfResources != NULL && classifier != NULL) |
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923 { |
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924 DMResource *node; |
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925 for (node = dfResources; node != NULL; node = node->next) |
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926 { |
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927 int ret = classifier(node); |
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|
928 if (ret != DMERR_OK) |
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|
929 return DMERR_INIT_FAIL; |
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930 } |
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|
931 } |
| 0 | 932 |
| 933 // Initialization complete | |
| 934 dfResInitialized = TRUE; | |
| 935 return DMERR_OK; | |
| 936 } | |
| 937 | |
| 938 | |
| 939 void dmres_close(void) | |
| 940 { | |
| 941 DMResource *node; | |
| 942 DMRES_LOCK(); | |
| 943 | |
| 944 if (!dfResInitialized) | |
| 945 return; | |
| 946 | |
| 947 // Shutdown possible subsystems | |
| 948 #ifdef DMRES_PACKFS | |
| 949 if (dfResFlags & DRF_USE_PACK) | |
| 950 { | |
| 951 int res = dm_pack_close(dfResPackFile); | |
| 952 if (res != DMERR_OK) | |
| 953 { | |
| 954 dmError("Error closing PACK, #%i: %s\n", | |
| 955 res, dmErrorStr(res)); | |
| 956 } | |
| 957 | |
| 958 dmFree(dfResPackFilename); | |
| 959 } | |
| 960 #endif | |
| 961 | |
| 962 // Free resource entries | |
| 963 node = dfResources; | |
| 964 while (node != NULL) | |
| 965 { | |
| 966 DMResource *next = node->next; | |
| 967 dmres_free(node); | |
| 968 node = next; | |
| 969 } | |
| 970 | |
| 971 // Etc. | |
| 972 dmFree(dfResPath); | |
| 973 DMRES_UNLOCK(); | |
| 974 dmDestroyMutex(dfResourcesMutex); | |
| 975 dfResInitialized = FALSE; | |
| 976 } | |
| 977 | |
| 978 | |
|
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979 int dmres_preload(BOOL start, int *loaded, int *total) |
| 0 | 980 { |
| 981 static DMResource *dfPreload = NULL; | |
|
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982 int ret = DMERR_OK; |
| 0 | 983 |
| 984 DMRES_LOCK(); | |
| 985 | |
|
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|
986 // Initialize preloading |
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|
987 if (dfPreload == NULL || start) |
| 0 | 988 { |
| 989 DMResource *node; | |
|
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|
990 |
| 0 | 991 dfPreload = dfResources; |
| 992 *loaded = 0; | |
| 993 *total = 0; | |
|
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|
994 |
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995 // Calculate total number of resources to be preloaded |
| 0 | 996 for (node = dfResources; node != NULL; node = node->next) |
| 997 { | |
|
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998 if ((dfResFlags & (DRF_PRELOAD_ALL | DRF_PRELOAD_RES)) || |
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999 (node->flags & (DMF_PRELOAD_RAW | DMF_PRELOAD_RES))) |
| 0 | 1000 (*total)++; |
| 1001 } | |
| 1002 } | |
|
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1003 else |
| 0 | 1004 if (dfPreload != NULL) |
| 1005 { | |
|
29
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diff
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|
1006 // Initialize fops and preload |
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1007 dmf_init_fops(dfPreload); |
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1008 if ((ret = dmf_preload(dfPreload)) != DMERR_OK) |
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1009 goto error; |
|
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|
1010 |
|
29
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|
1011 (*loaded)++; |
| 0 | 1012 dfPreload = dfPreload->next; |
| 1013 } | |
| 1014 | |
| 1015 DMRES_UNLOCK(); | |
|
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1016 return (dfPreload == NULL) ? DMERR_OK : DMERR_PROGRESS; |
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|
1017 |
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1018 error: |
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diff
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1019 DMRES_UNLOCK(); |
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1020 return ret; |
| 0 | 1021 } |
| 1022 | |
| 1023 | |
| 1024 void dmres_prune(int agems, int flags) | |
| 1025 { | |
|
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1026 DMResource *node; |
| 0 | 1027 int currtime = time(NULL); |
| 1028 DMRES_LOCK(); | |
| 1029 | |
|
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1030 for (node = dfResources; node != NULL; node = node->next) |
| 0 | 1031 { |
| 1032 // Check if node has refcount of 0 and is | |
| 1033 // not marked as persistent resource | |
|
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1034 if (node->refcount == 0 && |
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1035 (node->flags & DMF_PERSIST) == 0 && |
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1036 (node->flags & (DMF_LOADED_RES | DMF_LOADED_RAW))) |
| 0 | 1037 { |
| 1038 // Check if we match either one of atime or mtime | |
| 1039 if (((flags & DMPRUNE_ATIME) && | |
| 1040 currtime - node->atime >= agems) || | |
| 1041 ((flags & DMPRUNE_MTIME) && | |
| 1042 currtime - node->mtime >= agems)) | |
| 1043 { | |
|
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1044 dmres_free_res_data(node); |
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1045 dmres_free_raw_data(node); |
| 0 | 1046 } |
| 1047 } | |
| 1048 } | |
| 1049 | |
| 1050 DMRES_UNLOCK(); | |
| 1051 } | |
| 1052 | |
| 1053 | |
| 1054 /* Helper resource access routines | |
| 1055 */ | |
| 1056 int dmf_read_str(DMResource *f, Uint8 *s, size_t l) | |
| 1057 { | |
| 1058 return dmfread(s, sizeof(Uint8), l, f) == l; | |
| 1059 } | |
| 1060 | |
| 1061 | |
| 1062 #define DM_DEFINE_FUNC(xname, xtype, xmacro) \ | |
| 1063 BOOL dmf_read_ ## xname (DMResource *f, xtype *v) { \ | |
| 1064 xtype result; \ | |
| 1065 if (dmfread(&result, sizeof( xtype ), 1, f) != 1) \ | |
| 1066 return FALSE; \ | |
| 1067 *v = DM_ ## xmacro ## _TO_NATIVE (result); \ | |
| 1068 return TRUE; \ | |
| 1069 } | |
| 1070 | |
| 1071 DM_DEFINE_FUNC(le16, Uint16, LE16) | |
| 1072 DM_DEFINE_FUNC(le32, Uint32, LE32) | |
| 1073 | |
| 1074 DM_DEFINE_FUNC(be16, Uint16, BE16) | |
| 1075 DM_DEFINE_FUNC(be32, Uint32, BE32) | |
| 1076 | |
| 1077 #ifdef DM_HAVE_64BIT | |
| 1078 DM_DEFINE_FUNC(le64, Uint64, LE64) | |
| 1079 DM_DEFINE_FUNC(be64, Uint64, BE64) | |
| 1080 #endif |