Mercurial > hg > dmlib
annotate dmres.c @ 439:bc1da1f4cb4b
Implement fwrite and fputc in memio resources. They will only operate on pre-allocated memory area, thus not grow-as-write.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Sun, 04 Nov 2012 03:18:42 +0200 |
| parents | 3d9c044ec08d |
| children | b60220fd1669 |
| 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 | |
|
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11 DMResource *dmres_new(DMResourceLib *lib, const char *filename, int flags, size_t size) |
| 0 | 12 { |
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13 DMResource *node = dmMalloc0(sizeof(DMResource)); |
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14 if (node == NULL) |
| 0 | 15 return NULL; |
| 16 | |
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17 node->lib = lib; |
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18 node->filename = dm_strdup(filename); |
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19 node->flags = flags; |
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20 node->dataSize = size; |
| 0 | 21 |
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22 return node; |
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23 } |
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24 |
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25 |
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26 void dmres_free_res_data(DMResource *node) |
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27 { |
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28 if (node->rdata != NULL && |
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29 node->rops != NULL && |
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30 node->rops->free != NULL) |
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31 { |
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32 node->rops->free(node); |
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33 } |
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34 |
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35 node->rdata = NULL; |
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36 node->flags &= !DMF_LOADED_RES; |
| 0 | 37 } |
| 38 | |
| 39 | |
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40 void dmres_free_raw_data(DMResource *node) |
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41 { |
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42 dmFree(node->data); |
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43 node->data = NULL; |
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44 node->flags &= !DMF_LOADED_RAW; |
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45 } |
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46 |
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47 |
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48 void dmres_purge_raw_data(DMResource *node) |
| 0 | 49 { |
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50 if ((node->flags & DMF_PRELOAD_RAW) == 0 && |
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51 (node->flags & DMF_LOADED_RAW) && |
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52 node->data != NULL) |
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53 dmres_free_raw_data(node); |
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54 } |
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55 |
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56 |
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57 void dmres_free(DMResource *node) |
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58 { |
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59 if (node != NULL) |
| 0 | 60 { |
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61 dmres_free_res_data(node); |
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62 dmres_free_raw_data(node); |
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63 dmFree(node->filename); |
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64 dmFree(node); |
| 0 | 65 } |
| 66 } | |
| 67 | |
| 68 | |
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69 void dmres_insert(DMResourceLib *lib, DMResource * node) |
| 0 | 70 { |
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71 if (lib == NULL) |
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72 return; |
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73 |
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74 node->lib = lib; |
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75 |
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76 if (lib->resources != NULL) |
| 0 | 77 { |
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78 node->prev = lib->resources->prev; |
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79 lib->resources->prev->next = node; |
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80 lib->resources->prev = node; |
| 0 | 81 } |
| 82 else | |
| 83 { | |
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84 lib->resources = node->prev = node; |
| 0 | 85 } |
| 86 | |
| 87 node->next = NULL; | |
| 88 } | |
| 89 | |
| 90 | |
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91 void dmres_delete(DMResourceLib *lib, DMResource * node) |
| 0 | 92 { |
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93 if (lib == NULL) |
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94 return; |
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95 |
| 0 | 96 if (node->prev) |
| 97 node->prev->next = node->next; | |
| 98 | |
| 99 if (node->next) | |
| 100 node->next->prev = node->prev; | |
| 101 else | |
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102 lib->resources->prev = node->prev; |
| 0 | 103 |
| 104 node->prev = node->next = NULL; | |
| 105 } | |
| 106 | |
| 107 | |
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108 DMResource * dmres_find(DMResourceLib *lib, const char *filename) |
| 0 | 109 { |
| 110 DMResource *node, *found = NULL; | |
| 111 | |
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112 if (lib == NULL) |
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113 return NULL; |
| 0 | 114 |
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115 dmMutexLock(lib->mutex); |
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116 |
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117 for (node = lib->resources; node != NULL; node = node->next) |
| 0 | 118 { |
| 119 if (strcmp(node->filename, filename) == 0) | |
| 120 { | |
| 121 found = node; | |
| 122 break; | |
| 123 } | |
| 124 } | |
| 125 | |
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126 dmMutexUnlock(lib->mutex); |
| 0 | 127 |
| 128 return found; | |
| 129 } | |
| 130 | |
| 131 | |
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132 #ifdef DM_USE_STDIO |
| 0 | 133 /* Basic stdio file routines |
| 134 */ | |
| 135 static int dm_stdio_fopen(DMResource *handle) | |
| 136 { | |
| 137 char *rfilename = dm_strdup_printf("%s%s", DMRES_DATA_PATH, handle->filename); | |
| 138 if (rfilename == NULL) | |
| 139 return DMERR_MALLOC; | |
| 140 | |
| 141 handle->fh = fopen(rfilename, "rb"); | |
| 142 dmFree(rfilename); | |
| 143 | |
| 144 handle->error = dmGetErrno(); | |
| 145 return (handle->fh != NULL) ? DMERR_OK : DMERR_FOPEN; | |
| 146 } | |
| 147 | |
| 148 | |
| 149 static void dm_stdio_fclose(DMResource * f) | |
| 150 { | |
| 151 if (f->fh != NULL) | |
| 152 { | |
| 153 fclose(f->fh); | |
| 154 f->fh = NULL; | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 | |
| 159 static int dm_stdio_ferror(DMResource * f) | |
| 160 { | |
| 161 return f->error; | |
| 162 } | |
| 163 | |
| 164 | |
| 165 static int dm_stdio_fseek(DMResource *f, const off_t pos, const int whence) | |
| 166 { | |
| 167 int ret = fseek(f->fh, pos, whence); | |
| 168 f->error = dmGetErrno(); | |
| 169 return ret; | |
| 170 } | |
| 171 | |
| 172 | |
| 173 static off_t dm_stdio_fsize(DMResource *f) | |
| 174 { | |
| 175 off_t savePos, fileSize; | |
| 176 | |
| 177 // Check if the size is cached | |
| 178 if (f->dataSize != 0) | |
| 179 return f->dataSize; | |
| 180 | |
| 181 // Get file size | |
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182 savePos = ftello(f->fh); |
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183 if (fseeko(f->fh, 0L, SEEK_END) != 0) |
| 0 | 184 { |
| 185 f->error = dmGetErrno(); | |
| 186 return -1; | |
| 187 } | |
| 188 | |
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189 fileSize = ftello(f->fh); |
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190 if (fseeko(f->fh, savePos, SEEK_SET) != 0) |
| 0 | 191 { |
| 192 f->error = dmGetErrno(); | |
| 193 return -1; | |
| 194 } | |
| 195 | |
| 196 f->dataSize = fileSize; | |
| 197 return fileSize; | |
| 198 } | |
| 199 | |
| 200 | |
| 201 static off_t dm_stdio_ftell(DMResource * f) | |
| 202 { | |
| 203 return ftell(f->fh); | |
| 204 } | |
| 205 | |
| 206 | |
| 207 static BOOL dm_stdio_feof(DMResource * f) | |
| 208 { | |
| 209 return feof(f->fh); | |
| 210 } | |
| 211 | |
| 212 | |
| 213 static int dm_stdio_fgetc(DMResource * f) | |
| 214 { | |
| 215 int ret = fgetc(f->fh); | |
| 216 f->error = dmGetErrno(); | |
| 217 return ret; | |
| 218 } | |
| 219 | |
| 220 | |
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221 static int dm_stdio_fputc(int v, DMResource * f) |
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222 { |
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223 int ret = fputc(v, f->fh); |
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224 f->error = dmGetErrno(); |
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225 return ret; |
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226 } |
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227 |
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228 |
| 0 | 229 static size_t dm_stdio_fread(void *ptr, size_t size, size_t nmemb, DMResource * f) |
| 230 { | |
| 231 size_t ret = fread(ptr, size, nmemb, f->fh); | |
| 232 f->error = dmGetErrno(); | |
| 233 return ret; | |
| 234 } | |
| 235 | |
| 236 | |
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237 static size_t dm_stdio_fwrite(void *ptr, size_t size, size_t nmemb, DMResource * f) |
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238 { |
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239 size_t ret = fwrite(ptr, size, nmemb, f->fh); |
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240 f->error = dmGetErrno(); |
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241 return ret; |
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242 } |
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243 |
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244 |
| 0 | 245 static int dm_stdio_preload(DMResource *handle) |
| 246 { | |
| 247 int ret = dm_stdio_fopen(handle); | |
| 248 if (ret != DMERR_OK) | |
| 249 return ret; | |
| 250 | |
| 251 dm_stdio_fsize(handle); | |
| 252 | |
| 253 handle->data = dmMalloc(handle->dataSize); | |
| 254 if (handle->data == NULL) | |
| 255 return DMERR_MALLOC; | |
| 256 | |
| 257 if (dm_stdio_fread(handle->data, sizeof(Uint8), handle->dataSize, handle) != handle->dataSize) | |
| 258 return DMERR_FREAD; | |
| 259 | |
| 260 return DMERR_OK; | |
| 261 } | |
| 262 | |
| 263 | |
| 264 DMResourceOps dfStdioFileOps = | |
| 265 { | |
| 266 dm_stdio_ferror, | |
| 267 dm_stdio_fseek, | |
| 268 dm_stdio_fsize, | |
| 269 dm_stdio_ftell, | |
| 270 dm_stdio_feof, | |
| 271 dm_stdio_fgetc, | |
|
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272 dm_stdio_fputc, |
| 0 | 273 dm_stdio_fread, |
|
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274 dm_stdio_fwrite, |
| 0 | 275 |
| 276 dm_stdio_fopen, | |
| 277 dm_stdio_fclose, | |
| 278 dm_stdio_preload | |
| 279 }; | |
| 280 | |
| 281 DMResourceOps dfStdioFHOps = | |
| 282 { | |
| 283 dm_stdio_ferror, | |
| 284 dm_stdio_fseek, | |
| 285 dm_stdio_fsize, | |
| 286 dm_stdio_ftell, | |
| 287 dm_stdio_feof, | |
| 288 dm_stdio_fgetc, | |
|
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289 dm_stdio_fputc, |
| 0 | 290 dm_stdio_fread, |
|
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|
291 dm_stdio_fwrite, |
| 0 | 292 |
| 293 NULL, | |
| 294 NULL, | |
| 295 NULL | |
| 296 }; | |
| 297 #endif | |
| 298 | |
| 299 | |
| 300 // Some mingw/windows headers define these as macros, which is bad for us | |
| 301 #ifdef __WIN32 | |
| 302 #undef ferror | |
| 303 #undef feof | |
| 304 #endif | |
| 305 | |
| 306 | |
| 307 /* | |
| 308 * PACK file routines | |
| 309 */ | |
|
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|
310 #ifdef DM_USE_PACKFS |
| 0 | 311 static int dm_pack_preload(DMResource *handle) |
| 312 { | |
| 313 DMPackEntry *node; | |
| 314 int res = DMERR_OK, cres, cdataLeft; | |
| 315 z_stream cstream; | |
| 316 Uint8 * cbuffer = NULL; | |
| 317 | |
|
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318 if (handle->lib == NULL || handle->lib->packFile == NULL) |
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319 return DMERR_NULLPTR; |
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320 |
| 0 | 321 // Search PACK nodelist for file |
|
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322 if ((node = dm_pack_find(handle->lib->packFile->entries, handle->filename)) == NULL) |
| 0 | 323 { |
| 324 dmError("Entry '%s' not found in PACK file.\n", handle->filename); | |
| 325 res = DMERR_NOT_FOUND; | |
| 326 goto error; | |
| 327 } | |
| 328 | |
| 329 // Seek to entry | |
|
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330 if (fseek(handle->lib->packFile->file, node->offset, SEEK_SET) == -1) |
| 0 | 331 { |
| 332 dmError("Could not seek node position in PACK file.\n"); | |
| 333 res = DMERR_FSEEK; | |
| 334 goto error; | |
| 335 } | |
| 336 | |
| 337 // Allocate a structures and buffers | |
| 338 cbuffer = (Uint8 *) dmMalloc(DPACK_TMPSIZE); | |
| 339 if (cbuffer == NULL) | |
| 340 { | |
| 341 res = DMERR_MALLOC; | |
| 342 goto error; | |
| 343 } | |
| 344 | |
| 345 // Initialize fields | |
| 346 handle->dataOffset = 0; | |
| 347 handle->dataSize = node->size; | |
| 348 handle->data = (Uint8 *) dmMalloc(node->size); | |
| 349 if (handle->data == NULL) | |
| 350 { | |
| 351 res = DMERR_MALLOC; | |
| 352 goto error; | |
| 353 } | |
| 354 | |
| 355 // Initialize decompression | |
| 356 cstream.zalloc = (alloc_func) Z_NULL; | |
| 357 cstream.zfree = (free_func) Z_NULL; | |
| 358 cstream.opaque = (voidpf) Z_NULL; | |
| 359 cstream.next_out = handle->data; | |
| 360 cstream.avail_out = handle->dataSize; | |
| 361 cdataLeft = node->length; | |
| 362 cres = inflateInit(&(cstream)); | |
| 363 if (cres != Z_OK) | |
| 364 { | |
| 365 dmError("Could not initialize zlib stream inflation.\n"); | |
| 366 res = DMERR_INIT_FAIL; | |
| 367 goto error; | |
| 368 } | |
| 369 | |
| 370 // Uncompress the data | |
| 371 while (cdataLeft > 0 && | |
| 372 cstream.avail_out > 0 && cres == Z_OK) | |
| 373 { | |
| 374 cstream.avail_in = fread( | |
| 375 cbuffer, sizeof(Uint8), | |
| 376 (cdataLeft >= DPACK_TMPSIZE) ? DPACK_TMPSIZE : cdataLeft, | |
|
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377 handle->lib->packFile->file); |
| 0 | 378 |
| 379 cdataLeft -= cstream.avail_in; | |
| 380 cstream.next_in = cbuffer; | |
| 381 cres = inflate(&cstream, Z_FULL_FLUSH); | |
| 382 } | |
| 383 | |
| 384 // Cleanup | |
| 385 inflateEnd(&(cstream)); | |
| 386 | |
| 387 error: | |
| 388 dmFree(cbuffer); | |
| 389 return res; | |
| 390 } | |
| 391 | |
| 392 | |
|
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393 static void dm_pack_fclose(DMResource * f) |
| 0 | 394 { |
| 395 f->dataSize = 0; | |
| 396 f->dataOffset = 0; | |
| 397 dmFree(f->data); | |
| 398 f->data = NULL; | |
| 399 } | |
|
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400 #endif |
| 0 | 401 |
| 402 | |
| 403 static int dm_mem_ferror(DMResource * f) | |
| 404 { | |
| 405 return f->error; | |
| 406 } | |
| 407 | |
| 408 | |
| 409 static int dm_mem_fseek(DMResource * f, const off_t offset, const int whence) | |
| 410 { | |
| 411 off_t newPos; | |
| 412 | |
| 413 // Calculate the new position | |
| 414 switch (whence) | |
| 415 { | |
| 416 case SEEK_SET: | |
| 417 newPos = offset; | |
| 418 break; | |
| 419 | |
| 420 case SEEK_CUR: | |
| 421 newPos = f->dataOffset + offset; | |
| 422 break; | |
| 423 | |
| 424 case SEEK_END: | |
| 425 newPos = f->dataSize + offset; | |
| 426 break; | |
| 427 | |
| 428 default: | |
| 429 return -1; | |
| 430 } | |
| 431 | |
| 432 // Set the new position | |
| 433 f->dataOffset = newPos; | |
| 434 | |
| 435 // Check the new position | |
| 436 if (newPos < 0 && (size_t) newPos >= f->dataSize) | |
| 437 return -1; | |
| 438 | |
| 439 return 0; | |
| 440 } | |
| 441 | |
| 442 | |
| 443 static off_t dm_mem_fsize(DMResource * f) | |
| 444 { | |
| 445 return f->dataSize; | |
| 446 } | |
| 447 | |
| 448 | |
| 449 static off_t dm_mem_ftell(DMResource * f) | |
| 450 { | |
| 451 return f->dataOffset; | |
| 452 } | |
| 453 | |
| 454 | |
| 455 static BOOL dm_mem_feof(DMResource * f) | |
| 456 { | |
| 457 // Check for EOF | |
| 458 if ((size_t) f->dataOffset <= f->dataSize) | |
| 459 return FALSE; | |
| 460 else | |
| 461 return TRUE; | |
| 462 } | |
| 463 | |
| 464 | |
| 465 static int dm_mem_fgetc(DMResource * f) | |
| 466 { | |
| 467 // Check for EOF | |
| 468 if ((size_t) f->dataOffset < f->dataSize) | |
|
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469 return f->data[f->dataOffset++]; |
| 0 | 470 else |
| 471 return EOF; | |
| 472 } | |
| 473 | |
| 474 | |
| 475 static size_t dm_mem_fread(void *buf, size_t size, size_t nmemb, DMResource * f) | |
| 476 { | |
| 477 size_t length = (size * nmemb); | |
| 478 | |
| 479 // Check if we can read the whole chunk | |
| 480 if (((size_t) f->dataOffset + length) >= f->dataSize) | |
| 481 { | |
| 482 nmemb = (f->dataSize - f->dataOffset) / size; | |
| 483 length = size * nmemb; | |
| 484 } | |
| 485 | |
| 486 memcpy(buf, f->data + f->dataOffset, length); | |
| 487 f->dataOffset += length; | |
| 488 return nmemb; | |
| 489 } | |
| 490 | |
| 491 | |
|
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492 static int dm_mem_fputc(int ch, DMResource * f) |
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493 { |
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494 // Check for EOF |
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495 if ((size_t) f->dataOffset < f->dataSize) |
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496 { |
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497 f->data[f->dataOffset++] = ch; |
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498 return ch; |
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499 } |
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500 else |
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|
501 return EOF; |
|
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|
502 } |
|
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|
503 |
|
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437
diff
changeset
|
504 |
|
bc1da1f4cb4b
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diff
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|
505 static size_t dm_mem_fwrite(void *buf, size_t size, size_t nmemb, DMResource * f) |
|
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|
506 { |
|
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|
507 size_t length = (size * nmemb); |
|
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|
508 |
|
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|
509 // Check if we can write the whole chunk |
|
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changeset
|
510 if (((size_t) f->dataOffset + length) >= f->dataSize) |
|
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changeset
|
511 { |
|
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changeset
|
512 nmemb = (f->dataSize - f->dataOffset) / size; |
|
bc1da1f4cb4b
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changeset
|
513 length = size * nmemb; |
|
bc1da1f4cb4b
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|
514 } |
|
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changeset
|
515 |
|
bc1da1f4cb4b
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|
516 if (length > 0) |
|
bc1da1f4cb4b
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changeset
|
517 { |
|
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changeset
|
518 memcpy(f->data + f->dataOffset, buf, length); |
|
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|
519 f->dataOffset += length; |
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|
520 } |
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|
521 return nmemb; |
|
bc1da1f4cb4b
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|
522 } |
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|
523 |
|
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|
524 |
|
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|
525 |
|
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|
526 #ifdef DM_USE_PACKFS |
| 0 | 527 DMResourceOps dfPackFileOps = |
| 528 { | |
| 529 dm_mem_ferror, | |
| 530 dm_mem_fseek, | |
| 531 dm_mem_fsize, | |
| 532 dm_mem_ftell, | |
| 533 dm_mem_feof, | |
| 534 dm_mem_fgetc, | |
|
59
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diff
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|
535 NULL, |
| 0 | 536 dm_mem_fread, |
|
59
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diff
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|
537 NULL, |
| 0 | 538 |
| 539 NULL, | |
|
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|
540 dm_pack_fclose, |
| 0 | 541 dm_pack_preload |
| 542 }; | |
|
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|
543 #endif |
| 0 | 544 |
| 545 | |
| 546 DMResourceOps dfMemIOFileOps = | |
| 547 { | |
| 548 dm_mem_ferror, | |
| 549 dm_mem_fseek, | |
| 550 dm_mem_fsize, | |
| 551 dm_mem_ftell, | |
| 552 dm_mem_feof, | |
| 553 dm_mem_fgetc, | |
|
439
bc1da1f4cb4b
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437
diff
changeset
|
554 dm_mem_fputc, |
| 0 | 555 dm_mem_fread, |
|
439
bc1da1f4cb4b
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diff
changeset
|
556 dm_mem_fwrite, |
| 0 | 557 |
| 558 NULL, | |
| 559 NULL, | |
| 560 NULL | |
| 561 }; | |
| 562 | |
| 563 | |
| 564 /* FS file handling functions. These functions call the actual | |
| 565 * functions depending on where the file is located. | |
| 566 */ | |
|
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|
567 static void dmf_init_fops(DMResource *handle) |
|
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|
568 { |
|
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|
569 // Check fops |
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|
570 if (handle->fops == NULL) |
|
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|
571 { |
|
124
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|
572 #ifdef DM_USE_PACKFS |
|
359
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573 if (handle->lib->flags & DRF_USE_PACK) |
|
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|
574 handle->fops = &dfPackFileOps; |
|
124
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|
575 #ifdef DM_USE_STDIO |
|
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|
576 else |
|
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|
577 handle->fops = &dfStdioFileOps; |
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578 #else |
|
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579 handle->fops = &dfPackFileOps; |
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580 #endif |
|
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581 |
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582 #else |
|
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583 handle->fops = NULL; |
|
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584 #endif |
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585 } |
|
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586 } |
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587 |
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588 |
|
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589 int dmf_preload(DMResource *handle) |
|
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590 { |
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591 int ret = DMERR_INIT_FAIL; |
|
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592 |
|
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593 // Check if we want to preload raw data? |
|
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594 if (((handle->flags & DMF_PRELOAD_RAW) || |
|
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595 (handle->lib->flags & DRF_PRELOAD_ALL)) && |
|
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596 (handle->flags & DMF_LOADED_RAW) == 0 && |
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597 handle->fops->preload != NULL) |
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598 { |
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599 ret = handle->fops->preload(handle); |
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600 if (ret == DMERR_OK) |
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601 { |
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602 handle->flags |= DMF_LOADED_RAW; |
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603 } |
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604 } |
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605 else |
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606 { |
|
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607 if (handle->fops->fopen != NULL) |
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608 ret = handle->fops->fopen(handle); |
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609 else |
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610 if (handle->fops->preload != NULL) |
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611 { |
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612 ret = handle->fops->preload(handle); |
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613 if (ret == DMERR_OK) |
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614 { |
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615 handle->flags |= DMF_LOADED_RAW; |
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616 } |
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617 } |
|
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618 } |
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619 |
|
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620 // Check if resource data is to be preloaded |
|
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621 if (((handle->flags & DMF_PRELOAD_RES) || (handle->lib->flags & DRF_PRELOAD_RES)) && |
|
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622 (handle->flags & DMF_LOADED_RES) == 0 && |
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623 handle->rops != NULL && |
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624 handle->rops->load != NULL) |
|
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625 { |
|
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626 ret = handle->rops->load(handle); |
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627 if (ret == DMERR_OK) |
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628 { |
|
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629 // Okay, mark as loaded |
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630 handle->flags |= DMF_LOADED_RES; |
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631 |
|
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632 // Check if we can purge the raw data now |
|
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633 if ((handle->flags & DMF_PERSIST) == 0) |
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|
634 dmres_purge_raw_data(handle); |
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635 } |
|
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|
636 } |
|
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|
637 |
|
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|
638 return ret; |
|
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|
639 } |
|
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|
640 |
|
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|
641 |
|
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|
642 DMResource *dmf_open(DMResourceLib *lib, const char *filename) |
| 0 | 643 { |
| 644 int ret; | |
| 645 DMResource *handle; | |
| 646 | |
| 647 // Check master directory for resource | |
|
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|
648 if ((handle = dmres_find(lib, filename)) == NULL) |
| 0 | 649 { |
|
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|
650 #ifdef DM_USE_STDIO |
| 0 | 651 // Hmm.. does not exist? Fall back to a stdio file |
|
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|
652 handle = dmres_new(lib, filename, 0, 0); |
| 0 | 653 if (handle == NULL) |
| 654 return NULL; | |
| 655 | |
| 656 handle->fops = &dfStdioFileOps; | |
|
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|
657 dmres_insert(lib, handle); |
| 0 | 658 #else |
| 659 // Stdio not enabled, fail | |
| 660 return NULL; | |
| 661 #endif | |
| 662 } | |
| 663 | |
|
29
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|
664 // Initialize file ops |
|
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|
665 dmf_init_fops(handle); |
| 0 | 666 |
| 667 // Check if the data is preloaded | |
|
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|
668 if (handle->flags & DMF_LOADED_RAW) |
| 0 | 669 { |
| 670 dmres_ref(handle); | |
| 671 return handle; | |
| 672 } | |
| 673 | |
|
29
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|
674 // Try preloading |
|
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|
675 ret = dmf_preload(handle); |
| 0 | 676 |
| 677 if (ret == DMERR_OK) | |
|
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|
678 { |
|
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|
679 dmres_ref(handle); |
| 0 | 680 return handle; |
|
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|
681 } |
| 0 | 682 |
| 683 return NULL; | |
| 684 } | |
| 685 | |
| 686 | |
|
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|
687 DMResource * dmf_create_memio(DMResourceLib *lib, const char *filename, Uint8 *buf, size_t len) |
| 0 | 688 { |
| 689 DMResource *handle; | |
| 690 | |
| 691 // Check master directory for resource | |
|
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|
692 if ((handle = dmres_find(lib, filename)) == NULL) |
| 0 | 693 { |
| 694 // Hmm.. does not exist? Fall back to a stdio file | |
|
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|
695 handle = dmres_new(lib, filename, DMF_LOADED_RAW, len); |
| 0 | 696 if (handle == NULL) |
| 697 return NULL; | |
| 698 | |
| 699 handle->fops = &dfMemIOFileOps; | |
| 700 handle->data = buf; | |
|
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|
701 dmres_insert(lib, handle); |
| 0 | 702 } |
| 703 | |
| 704 // Increase refcount | |
| 705 dmres_ref(handle); | |
| 706 | |
| 707 return handle; | |
| 708 } | |
| 709 | |
| 710 | |
|
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|
711 #ifdef DM_USE_STDIO |
|
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|
712 DMResource * dmf_create_stdio(const char *filename, const char *mode) |
| 0 | 713 { |
|
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|
714 DMResource *handle = dmres_new(NULL, filename, 0, 0); |
| 0 | 715 if (handle == NULL) |
| 716 return NULL; | |
| 717 | |
| 718 handle->fops = &dfStdioFileOps; | |
| 719 | |
|
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|
720 handle->fh = fopen(filename, mode); |
| 0 | 721 handle->error = dmGetErrno(); |
| 722 | |
| 723 if (handle->fh != NULL) | |
| 724 { | |
| 725 dmres_ref(handle); | |
| 726 return handle; | |
| 727 } | |
| 728 else | |
| 729 { | |
| 730 dmres_free(handle); | |
| 731 return NULL; | |
| 732 } | |
| 733 } | |
| 734 | |
| 735 | |
| 736 DMResource * dmf_create_stdio_stream(FILE *fh) | |
| 737 { | |
|
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|
738 DMResource *handle = dmres_new(NULL, "", 0, 0); |
| 0 | 739 if (handle == NULL) |
| 740 return NULL; | |
| 741 | |
| 742 handle->fops = &dfStdioFHOps; | |
| 743 handle->fh = fh; | |
| 744 dmres_ref(handle); | |
| 745 return handle; | |
| 746 } | |
| 747 #endif | |
| 748 | |
| 749 | |
| 750 void dmf_close(DMResource * f) | |
| 751 { | |
| 752 if (f == NULL) | |
| 753 return; | |
| 754 | |
| 755 if (f->fops->fclose != NULL) | |
| 756 f->fops->fclose(f); | |
| 757 | |
| 758 dmres_unref(f); | |
| 759 } | |
| 760 | |
| 761 | |
| 762 int dmferror(DMResource * f) | |
| 763 { | |
| 764 f->atime = time(NULL); | |
| 765 return f->fops->ferror(f); | |
| 766 } | |
| 767 | |
| 768 int dmfseek(DMResource * f, off_t offset, int whence) | |
| 769 { | |
| 770 f->atime = time(NULL); | |
| 771 return f->fops->fseek(f, offset, whence); | |
| 772 } | |
| 773 | |
| 774 off_t dmfsize(DMResource * f) | |
| 775 { | |
| 776 f->atime = time(NULL); | |
| 777 return f->fops->fsize(f); | |
| 778 } | |
| 779 | |
| 780 off_t dmftell(DMResource * f) | |
| 781 { | |
| 782 f->atime = time(NULL); | |
| 783 return f->fops->ftell(f); | |
| 784 } | |
| 785 | |
| 786 BOOL dmfeof(DMResource * f) | |
| 787 { | |
| 788 f->atime = time(NULL); | |
| 789 return f->fops->feof(f); | |
| 790 } | |
| 791 | |
| 792 int dmfgetc(DMResource * f) | |
| 793 { | |
| 794 f->atime = time(NULL); | |
| 795 return f->fops->fgetc(f); | |
| 796 } | |
| 797 | |
|
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|
798 int dmfputc(int v, DMResource * f) |
|
72
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Improve and finish write functions in resource subsystem.
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diff
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|
799 { |
|
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Improve and finish write functions in resource subsystem.
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|
800 f->atime = time(NULL); |
|
be6160981428
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|
801 return f->fops->fputc(v, f); |
|
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|
802 } |
|
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803 |
| 0 | 804 size_t dmfread(void *ptr, size_t size, size_t nmemb, DMResource * f) |
| 805 { | |
| 806 f->atime = time(NULL); | |
| 807 return f->fops->fread(ptr, size, nmemb, f); | |
| 808 } | |
| 809 | |
|
72
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810 size_t dmfwrite(void *ptr, size_t size, size_t nmemb, DMResource * f) |
|
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811 { |
|
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812 f->atime = time(NULL); |
|
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813 return f->fops->fwrite(ptr, size, nmemb, f); |
|
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814 } |
|
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815 |
| 235 | 816 char *dmfgets(char *s, int size, DMResource * f) |
| 817 { | |
| 818 char *p = s, c; | |
| 819 int n = 0; | |
| 820 | |
| 821 while ((c = f->fops->fgetc(f)) != EOF) | |
| 822 { | |
|
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823 n++; |
| 235 | 824 if (c == '\n') |
| 825 break; | |
| 826 else | |
| 827 if (n < size - 1) | |
| 828 *p++ = c; | |
| 829 } | |
| 830 *p = 0; | |
| 831 | |
|
236
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|
832 return (n > 0) ? s : NULL; |
| 235 | 833 } |
| 834 | |
| 835 | |
|
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836 int dmres_ref(DMResource *node) |
| 0 | 837 { |
|
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838 if (node->lib != NULL) dmMutexLock(node->lib->mutex); |
|
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839 node->atime = time(NULL); |
|
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840 node->refcount++; |
|
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841 if (node->lib != NULL) dmMutexUnlock(node->lib->mutex); |
| 0 | 842 |
|
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843 return node->refcount; |
| 0 | 844 } |
| 845 | |
| 846 | |
|
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847 int dmres_unref(DMResource *node) |
| 0 | 848 { |
|
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849 if (node->lib != NULL) dmMutexLock(node->lib->mutex); |
|
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850 node->refcount--; |
|
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851 if (node->lib != NULL) dmMutexUnlock(node->lib->mutex); |
| 0 | 852 |
|
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853 return node->refcount; |
| 0 | 854 } |
| 855 | |
| 856 | |
|
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857 #define NADDFLAG(flg, ch) \ |
|
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858 do { \ |
|
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859 if ((flags & (flg)) && offs < size - 1) \ |
|
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860 str[offs++] = ch; \ |
|
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861 } while (0) |
|
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862 |
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863 void dmres_flags_to_symbolic(char *str, size_t size, int flags) |
|
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864 { |
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865 size_t offs = 0; |
|
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866 NADDFLAG(DMF_PRELOAD_RAW, 'r'); |
|
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867 NADDFLAG(DMF_PRELOAD_RES, 'e'); |
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868 NADDFLAG(DMF_PERSIST, 'p'); |
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869 NADDFLAG(DMF_STREAM, 's'); |
|
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870 if (offs < size) |
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871 str[offs] = 0; |
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872 } |
|
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873 |
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874 #undef NADDFLAG |
|
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875 |
|
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|
876 |
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|
877 int dmres_symbolic_to_flags(const char *str) |
|
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|
878 { |
|
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|
879 int offs, flags; |
|
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880 |
|
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881 for (flags = offs = 0; str[offs]; offs++) |
|
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882 switch (tolower(str[offs])) |
|
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883 { |
|
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|
884 case 'r': flags |= DMF_PRELOAD_RAW; break; |
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885 case 'e': flags |= DMF_PRELOAD_RES; break; |
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|
886 case 'p': flags |= DMF_PERSIST; break; |
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|
887 case 's': flags |= DMF_STREAM; break; |
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|
888 } |
|
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889 return flags; |
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890 } |
|
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|
891 |
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|
892 |
|
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893 int dmres_load_resfile(DMResourceLib *lib, const char *filename) |
| 0 | 894 { |
| 33 | 895 int ret = DMERR_OK; |
| 0 | 896 char line[256]; |
| 897 FILE *f = fopen(filename, "r"); | |
| 898 if (f == NULL) | |
| 899 return DMERR_FOPEN; | |
| 900 | |
|
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|
901 dmMutexLock(lib->mutex); |
| 0 | 902 |
| 903 while (fgets(line, sizeof(line) - 1, f) != NULL) | |
| 904 { | |
| 905 int fnstart, fsep; | |
| 906 for (fnstart = 0; isspace(line[fnstart]); fnstart++); | |
| 907 for (fsep = fnstart; line[fsep] && line[fsep] != '|'; fsep++); | |
| 908 if (line[fsep] == '|') | |
| 909 { | |
| 910 int flags, i; | |
| 911 for (i = fsep - 1; i > 0 && isspace(line[i]); i--) | |
| 912 line[i] = 0; | |
| 913 | |
| 914 for (i = fsep; isspace(line[i]); i++); | |
| 915 } | |
| 916 } | |
| 917 | |
|
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918 dmMutexUnlock(lib->mutex); |
| 0 | 919 fclose(f); |
| 33 | 920 |
| 0 | 921 return ret; |
| 922 } | |
| 923 | |
| 924 | |
|
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925 int dmres_write_resfile(DMResourceLib *lib, const char *filename) |
| 0 | 926 { |
| 927 int ret; | |
| 928 DMResource *node; | |
| 929 FILE *f = fopen(filename, "w"); | |
| 930 if (f == NULL) | |
| 931 return DMERR_FOPEN; | |
| 932 | |
|
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933 dmMutexLock(lib->mutex); |
| 0 | 934 |
|
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935 for (node = lib->resources; node != NULL; node = node->next) |
| 0 | 936 { |
|
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|
937 char tmp[64]; |
|
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938 dmres_flags_to_symbolic(tmp, sizeof(tmp), node->flags); |
|
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939 if (fprintf(f, "%s|%s\n", node->filename, tmp) < 0) |
| 0 | 940 { |
| 941 ret = DMERR_FWRITE; | |
| 942 goto error; | |
| 943 } | |
| 944 } | |
| 945 | |
| 946 error: | |
|
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|
947 dmMutexUnlock(lib->mutex); |
| 0 | 948 fclose(f); |
| 949 return ret; | |
| 950 } | |
| 951 | |
| 952 | |
| 953 /* Resources subsystem initialization and shutdown routines | |
| 954 */ | |
|
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|
955 int dmres_init(DMResourceLib **plib, const char *filename, const char *path, const int flags, int (*classifier)(DMResource *)) |
| 0 | 956 { |
|
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|
957 DMResourceLib *lib; |
|
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958 |
|
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959 // Allocate the resource library structure |
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960 if ((*plib = lib = dmMalloc0(sizeof(DMResourceLib))) == NULL) |
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961 return DMERR_MALLOC; |
| 0 | 962 |
|
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|
963 // Basic data |
|
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964 lib->mutex = dmCreateMutex(); |
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965 lib->flags = flags; |
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966 lib->resPath = dm_strdup((path != NULL) ? path : DMRES_DATA_PATH); |
| 0 | 967 |
| 107 | 968 |
| 0 | 969 if (flags & DRF_USE_PACK) |
| 970 { | |
|
124
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|
971 #ifdef DM_USE_PACKFS |
| 0 | 972 int ret; |
| 973 DMPackEntry *node; | |
| 974 | |
|
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975 lib->packFilename = dm_strdup((filename != NULL) ? filename : DMRES_DATA_PACK); |
| 0 | 976 |
| 977 // Initialize PACK, open as read-only | |
|
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978 ret = dm_pack_open(lib->packFilename, &lib->packFile, TRUE); |
| 0 | 979 if (ret != DMERR_OK) |
| 980 { | |
| 981 dmError("Error opening PACK file '%s', #%i: %s\n", | |
|
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|
982 lib->packFilename, ret, dmErrorStr(ret)); |
| 0 | 983 |
| 984 return DMERR_INIT_FAIL; | |
| 985 } | |
| 986 | |
| 987 // Initialize resources from a PACK file | |
|
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988 for (node = lib->packFile->entries; node != NULL; node = node->next) |
| 0 | 989 { |
|
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990 DMResource *res = dmres_new(lib, node->filename, node->resFlags & DMF_MASK, node->size); |
| 0 | 991 if (res == NULL) |
| 992 { | |
| 993 dmError("Could not allocate memory for resource node '%s' [0x%08x], %d.\n", | |
| 994 node->filename, node->resFlags, node->size); | |
| 995 return DMERR_INIT_FAIL; | |
| 996 } | |
| 997 | |
|
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|
998 dmres_insert(lib, res); |
| 0 | 999 } |
| 1000 | |
| 1001 #else | |
| 1002 // PACK not compiled in, FAIL! | |
| 1003 return DMERR_INIT_FAIL; | |
| 1004 #endif | |
| 1005 } | |
| 1006 else | |
| 1007 { | |
| 1008 // Initialize resources from a resource directory | |
|
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1009 char *resFilename = dm_strdup_printf("%s%s", lib->resPath, DMRES_RES_FILE); |
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1010 int ret = dmres_load_resfile(lib, resFilename); |
| 0 | 1011 dmFree(resFilename); |
| 1012 | |
| 1013 if (ret != DMERR_OK) | |
| 1014 return DMERR_INIT_FAIL; | |
| 1015 } | |
| 1016 | |
|
26
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1017 // Okay, classify resources |
|
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1018 if (lib->resources != NULL && classifier != NULL) |
|
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1019 { |
|
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1020 DMResource *node; |
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1021 for (node = lib->resources; node != NULL; node = node->next) |
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1022 { |
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1023 int ret = classifier(node); |
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1024 if (ret != DMERR_OK) |
| 107 | 1025 return ret; |
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1026 } |
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1027 } |
| 0 | 1028 |
| 1029 // Initialization complete | |
| 1030 return DMERR_OK; | |
| 1031 } | |
| 1032 | |
| 1033 | |
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1034 int dmres_close(DMResourceLib *lib) |
| 0 | 1035 { |
| 1036 DMResource *node; | |
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1037 |
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1038 if (lib == NULL) |
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1039 return DMERR_NULLPTR; |
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1040 |
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1041 dmMutexLock(lib->mutex); |
| 0 | 1042 |
| 1043 // Shutdown possible subsystems | |
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1044 #ifdef DM_USE_PACKFS |
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1045 if (lib->flags & DRF_USE_PACK) |
| 0 | 1046 { |
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1047 int res = dm_pack_close(lib->packFile); |
| 0 | 1048 if (res != DMERR_OK) |
| 1049 { | |
| 1050 dmError("Error closing PACK, #%i: %s\n", | |
| 1051 res, dmErrorStr(res)); | |
| 1052 } | |
| 1053 | |
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1054 dmFree(lib->packFilename); |
| 0 | 1055 } |
| 1056 #endif | |
| 1057 | |
| 1058 // Free resource entries | |
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1059 node = lib->resources; |
| 0 | 1060 while (node != NULL) |
| 1061 { | |
| 1062 DMResource *next = node->next; | |
| 1063 dmres_free(node); | |
| 1064 node = next; | |
| 1065 } | |
| 1066 | |
| 1067 // Etc. | |
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1068 dmFree(lib->resPath); |
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1069 dmMutexUnlock(lib->mutex); |
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1070 dmDestroyMutex(lib->mutex); |
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1071 return DMERR_OK; |
| 0 | 1072 } |
| 1073 | |
| 1074 | |
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1075 int dmres_preload(DMResourceLib *lib, BOOL start, int *loaded, int *total) |
| 0 | 1076 { |
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1077 int ret = DMERR_OK; |
| 0 | 1078 |
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1079 dmMutexLock(lib->mutex); |
| 0 | 1080 |
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1081 // Initialize preloading |
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1082 if (lib->preload == NULL || start) |
| 0 | 1083 { |
| 1084 DMResource *node; | |
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1085 |
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1086 lib->preload = lib->resources; |
| 0 | 1087 *loaded = 0; |
| 1088 *total = 0; | |
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1089 |
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1090 // Calculate total number of resources to be preloaded |
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1091 for (node = lib->resources; node != NULL; node = node->next) |
| 0 | 1092 { |
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1093 if ((lib->flags & (DRF_PRELOAD_ALL | DRF_PRELOAD_RES)) || |
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1094 (node->flags & (DMF_PRELOAD_RAW | DMF_PRELOAD_RES))) |
| 0 | 1095 (*total)++; |
| 1096 } | |
| 1097 } | |
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1098 else |
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1099 if (lib->preload != NULL) |
| 0 | 1100 { |
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1101 // Initialize fops and preload |
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1102 dmf_init_fops(lib->preload); |
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1103 if ((ret = dmf_preload(lib->preload)) != DMERR_OK) |
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1104 goto error; |
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1105 |
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1106 (*loaded)++; |
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1107 lib->preload = lib->preload->next; |
| 0 | 1108 } |
| 1109 | |
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1110 dmMutexUnlock(lib->mutex); |
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1111 return (lib->preload == NULL) ? DMERR_OK : DMERR_PROGRESS; |
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1112 |
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1113 error: |
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1114 dmMutexUnlock(lib->mutex); |
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1115 return ret; |
| 0 | 1116 } |
| 1117 | |
| 1118 | |
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1119 void dmres_prune(DMResourceLib *lib, int agems, int flags) |
| 0 | 1120 { |
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1121 DMResource *node; |
| 0 | 1122 int currtime = time(NULL); |
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1123 dmMutexLock(lib->mutex); |
| 0 | 1124 |
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1125 for (node = lib->resources; node != NULL; node = node->next) |
| 0 | 1126 { |
| 1127 // Check if node has refcount of 0 and is | |
| 1128 // not marked as persistent resource | |
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1129 if (node->refcount == 0 && |
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1130 (node->flags & DMF_PERSIST) == 0 && |
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1131 (node->flags & (DMF_LOADED_RES | DMF_LOADED_RAW))) |
| 0 | 1132 { |
| 1133 // Check if we match either one of atime or mtime | |
| 1134 if (((flags & DMPRUNE_ATIME) && | |
| 1135 currtime - node->atime >= agems) || | |
| 1136 ((flags & DMPRUNE_MTIME) && | |
| 1137 currtime - node->mtime >= agems)) | |
| 1138 { | |
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1139 dmres_free_res_data(node); |
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1140 dmres_free_raw_data(node); |
| 0 | 1141 } |
| 1142 } | |
| 1143 } | |
| 1144 | |
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1145 dmMutexUnlock(lib->mutex); |
| 0 | 1146 } |
| 1147 | |
| 1148 | |
| 1149 /* Helper resource access routines | |
| 1150 */ | |
| 1151 int dmf_read_str(DMResource *f, Uint8 *s, size_t l) | |
| 1152 { | |
| 1153 return dmfread(s, sizeof(Uint8), l, f) == l; | |
| 1154 } | |
| 1155 | |
|
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1156 BOOL dmf_read_byte(DMResource *f, Uint8 *val) |
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1157 { |
|
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1158 int tmp = dmfgetc(f); |
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1159 *val = tmp; |
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1160 return tmp != EOF; |
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1161 } |
| 0 | 1162 |
| 1163 #define DM_DEFINE_FUNC(xname, xtype, xmacro) \ | |
| 1164 BOOL dmf_read_ ## xname (DMResource *f, xtype *v) { \ | |
| 1165 xtype result; \ | |
| 1166 if (dmfread(&result, sizeof( xtype ), 1, f) != 1) \ | |
| 1167 return FALSE; \ | |
| 1168 *v = DM_ ## xmacro ## _TO_NATIVE (result); \ | |
| 1169 return TRUE; \ | |
| 1170 } | |
| 1171 | |
| 1172 DM_DEFINE_FUNC(le16, Uint16, LE16) | |
| 1173 DM_DEFINE_FUNC(le32, Uint32, LE32) | |
| 1174 | |
| 1175 DM_DEFINE_FUNC(be16, Uint16, BE16) | |
| 1176 DM_DEFINE_FUNC(be32, Uint32, BE32) | |
| 1177 | |
| 1178 #ifdef DM_HAVE_64BIT | |
| 1179 DM_DEFINE_FUNC(le64, Uint64, LE64) | |
| 1180 DM_DEFINE_FUNC(be64, Uint64, BE64) | |
| 1181 #endif |