| 1 | /* |
| 2 | * Human-readable config file management for PicoDrive |
| 3 | * (c) |
| 4 | */ |
| 5 | |
| 6 | #include <string.h> |
| 7 | #include <stdlib.h> |
| 8 | #include "config.h" |
| 9 | #include "menu.h" |
| 10 | #include "emu.h" |
| 11 | #include <Pico/Pico.h> |
| 12 | |
| 13 | extern menu_entry opt_entries[]; |
| 14 | extern menu_entry opt2_entries[]; |
| 15 | extern menu_entry cdopt_entries[]; |
| 16 | extern const int opt_entry_count; |
| 17 | extern const int opt2_entry_count; |
| 18 | extern const int cdopt_entry_count; |
| 19 | |
| 20 | static menu_entry *cfg_opts[] = { opt_entries, opt2_entries, cdopt_entries }; |
| 21 | static const int *cfg_opt_counts[] = { &opt_entry_count, &opt2_entry_count, &cdopt_entry_count }; |
| 22 | |
| 23 | #define NL "\n" |
| 24 | |
| 25 | |
| 26 | static int seek_sect(FILE *f, const char *section) |
| 27 | { |
| 28 | char line[128], *tmp; |
| 29 | int len; |
| 30 | |
| 31 | len = strlen(section); |
| 32 | // seek to the section needed |
| 33 | while (!feof(f)) |
| 34 | { |
| 35 | tmp = fgets(line, sizeof(line), f); |
| 36 | if (tmp == NULL) break; |
| 37 | |
| 38 | if (line[0] != '[') continue; // not section start |
| 39 | if (strncmp(line + 1, section, len) == 0 && line[len+1] == ']') |
| 40 | return 1; // found it |
| 41 | } |
| 42 | |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | |
| 47 | static void custom_write(FILE *f, const menu_entry *me) |
| 48 | { |
| 49 | char *str, str24[24]; |
| 50 | |
| 51 | switch (me->id) |
| 52 | { |
| 53 | case MA_OPT_RENDERER: |
| 54 | if (!((defaultConfig.s_PicoOpt^PicoOpt)&0x10) && |
| 55 | !((defaultConfig.EmuOpt^currentConfig.EmuOpt)&0x80)) return; |
| 56 | if (PicoOpt&0x10) |
| 57 | str = "8bit fast"; |
| 58 | else if (currentConfig.EmuOpt&0x80) |
| 59 | str = "16bit accurate"; |
| 60 | else |
| 61 | str = "8bit accurate"; |
| 62 | fprintf(f, "Renderer = %s", str); |
| 63 | break; |
| 64 | |
| 65 | case MA_OPT_SCALING: |
| 66 | if (defaultConfig.scaling == currentConfig.scaling) return; |
| 67 | switch (currentConfig.scaling) { |
| 68 | default: str = "OFF"; break; |
| 69 | case 1: str = "hw horizontal"; break; |
| 70 | case 2: str = "hw horiz. + vert."; break; |
| 71 | case 3: str = "sw horizontal"; break; |
| 72 | } |
| 73 | fprintf(f, "Scaling = %s", str); |
| 74 | break; |
| 75 | case MA_OPT_FRAMESKIP: |
| 76 | if (defaultConfig.Frameskip == currentConfig.Frameskip) return; |
| 77 | if (currentConfig.Frameskip < 0) |
| 78 | strcpy(str24, "Auto"); |
| 79 | else sprintf(str24, "%i", currentConfig.Frameskip); |
| 80 | fprintf(f, "Frameskip = %s", str24); |
| 81 | break; |
| 82 | case MA_OPT_SOUND_QUALITY: |
| 83 | if (!((defaultConfig.s_PicoOpt^PicoOpt)&8) && |
| 84 | defaultConfig.s_PsndRate == PsndRate) return; |
| 85 | str = (PicoOpt&0x08)?"stereo":"mono"; |
| 86 | fprintf(f, "Sound Quality = %i %s", PsndRate, str); |
| 87 | break; |
| 88 | case MA_OPT_REGION: |
| 89 | if (defaultConfig.s_PicoRegion == PicoRegionOverride && |
| 90 | defaultConfig.s_PicoAutoRgnOrder == PicoAutoRgnOrder) return; |
| 91 | fprintf(f, "Region = %s", me_region_name(PicoRegionOverride, PicoAutoRgnOrder)); |
| 92 | break; |
| 93 | case MA_OPT_CONFIRM_STATES: |
| 94 | if (!((defaultConfig.EmuOpt^currentConfig.EmuOpt)&(5<<9))) return; |
| 95 | switch ((currentConfig.EmuOpt >> 9) & 5) { |
| 96 | default: str = "OFF"; break; |
| 97 | case 1: str = "writes"; break; |
| 98 | case 4: str = "loads"; break; |
| 99 | case 5: str = "both"; break; |
| 100 | } |
| 101 | fprintf(f, "Confirm savestate = %s", str); |
| 102 | break; |
| 103 | case MA_OPT_CPU_CLOCKS: |
| 104 | if (defaultConfig.CPUclock == currentConfig.CPUclock) return; |
| 105 | fprintf(f, "GP2X CPU clocks = %i", currentConfig.CPUclock); |
| 106 | break; |
| 107 | case MA_OPT2_GAMMA: |
| 108 | if (defaultConfig.gamma == currentConfig.gamma) return; |
| 109 | fprintf(f, "Gamma correction = %.3f", (double)currentConfig.gamma / 100.0); |
| 110 | break; |
| 111 | case MA_OPT2_SQUIDGEHACK: |
| 112 | if (!((defaultConfig.EmuOpt^currentConfig.EmuOpt)&0x0010)) return; |
| 113 | fprintf(f, "Squidgehack = %i", (currentConfig.EmuOpt&0x0010)>>4); |
| 114 | break; |
| 115 | case MA_CDOPT_READAHEAD: |
| 116 | if (defaultConfig.s_PicoCDBuffers == PicoCDBuffers) return; |
| 117 | sprintf(str24, "%i", PicoCDBuffers * 2); |
| 118 | fprintf(f, "ReadAhead buffer = %s", str24); |
| 119 | break; |
| 120 | |
| 121 | default: |
| 122 | printf("unhandled custom_write: %i\n", me->id); |
| 123 | return; |
| 124 | } |
| 125 | fprintf(f, NL); |
| 126 | } |
| 127 | |
| 128 | |
| 129 | int config_writesect(const char *fname, const char *section) |
| 130 | { |
| 131 | FILE *fo = NULL, *fn = NULL; // old and new |
| 132 | menu_entry *me; |
| 133 | int t, i, tlen, ret; |
| 134 | char line[128], *tmp; |
| 135 | |
| 136 | if (section != NULL) |
| 137 | { |
| 138 | fo = fopen(fname, "r"); |
| 139 | if (fo == NULL) { |
| 140 | fn = fopen(fname, "w"); |
| 141 | goto write; |
| 142 | } |
| 143 | |
| 144 | ret = seek_sect(fo, section); |
| 145 | if (!ret) { |
| 146 | // sect not found, we can simply append |
| 147 | fclose(fo); fo = NULL; |
| 148 | fn = fopen(fname, "a"); |
| 149 | goto write; |
| 150 | } |
| 151 | |
| 152 | // use 2 files.. |
| 153 | fclose(fo); |
| 154 | rename(fname, "tmp.cfg"); |
| 155 | fo = fopen("tmp.cfg", "r"); |
| 156 | fn = fopen(fname, "w"); |
| 157 | if (fo == NULL || fn == NULL) goto write; |
| 158 | |
| 159 | // copy everything until sect |
| 160 | tlen = strlen(section); |
| 161 | while (!feof(fo)) |
| 162 | { |
| 163 | tmp = fgets(line, sizeof(line), fo); |
| 164 | if (tmp == NULL) break; |
| 165 | |
| 166 | if (line[0] == '[' && strncmp(line + 1, section, tlen) == 0 && line[tlen+1] == ']') |
| 167 | break; |
| 168 | fputs(line, fn); |
| 169 | } |
| 170 | |
| 171 | // now skip to next sect |
| 172 | while (!feof(fo)) |
| 173 | { |
| 174 | tmp = fgets(line, sizeof(line), fo); |
| 175 | if (tmp == NULL) break; |
| 176 | if (line[0] == '[') { |
| 177 | fseek(fo, -strlen(line), SEEK_CUR); |
| 178 | break; |
| 179 | } |
| 180 | } |
| 181 | if (feof(fo)) |
| 182 | { |
| 183 | fclose(fo); fo = NULL; |
| 184 | remove("tmp.cfg"); |
| 185 | } |
| 186 | } |
| 187 | else |
| 188 | { |
| 189 | fn = fopen(fname, "w"); |
| 190 | } |
| 191 | |
| 192 | write: |
| 193 | if (fn == NULL) { |
| 194 | if (fo) fclose(fo); |
| 195 | return -1; |
| 196 | } |
| 197 | if (section != NULL) |
| 198 | fprintf(fn, "[%s]" NL, section); |
| 199 | |
| 200 | for (t = 0; t < sizeof(cfg_opts) / sizeof(cfg_opts[0]); t++) |
| 201 | { |
| 202 | me = cfg_opts[t]; |
| 203 | tlen = *(cfg_opt_counts[t]); |
| 204 | for (i = 0; i < tlen; i++, me++) |
| 205 | { |
| 206 | if (!me->need_to_save) continue; |
| 207 | if ((me->beh != MB_ONOFF && me->beh != MB_RANGE) || me->name == NULL) |
| 208 | custom_write(fn, me); |
| 209 | else if (me->beh == MB_ONOFF) |
| 210 | fprintf(fn, "%s = %i" NL, me->name, (*(int *)me->var & me->mask) ? 1 : 0); |
| 211 | else if (me->beh == MB_RANGE) |
| 212 | fprintf(fn, "%s = %i" NL, me->name, *(int *)me->var); |
| 213 | } |
| 214 | } |
| 215 | fprintf(fn, NL); |
| 216 | |
| 217 | if (fo != NULL) |
| 218 | { |
| 219 | // copy whatever is left |
| 220 | while (!feof(fo)) |
| 221 | { |
| 222 | tmp = fgets(line, sizeof(line), fo); |
| 223 | if (tmp == NULL) break; |
| 224 | |
| 225 | fputs(line, fn); |
| 226 | } |
| 227 | fclose(fo); |
| 228 | remove("tmp.cfg"); |
| 229 | } |
| 230 | |
| 231 | fclose(fn); |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | static void mystrip(char *str) |
| 237 | { |
| 238 | int i, len; |
| 239 | |
| 240 | len = strlen(str); |
| 241 | for (i = 0; i < len; i++) |
| 242 | if (str[i] != ' ') break; |
| 243 | if (i > 0) memmove(str, str + i, len - i + 1); |
| 244 | len = strlen(str); |
| 245 | for (i = len - 1; i >= 0; i--) |
| 246 | if (str[i] != ' ') break; |
| 247 | str[i+1] = 0; |
| 248 | } |
| 249 | |
| 250 | |
| 251 | int config_writelrom(const char *fname) |
| 252 | { |
| 253 | char line[128], *tmp, *optr = NULL; |
| 254 | char *old_data = NULL; |
| 255 | int size; |
| 256 | FILE *f; |
| 257 | |
| 258 | if (strlen(currentConfig.lastRomFile) == 0) return 0; |
| 259 | |
| 260 | f = fopen(fname, "r"); |
| 261 | if (f != NULL) |
| 262 | { |
| 263 | fseek(f, 0, SEEK_END); |
| 264 | size = ftell(f); |
| 265 | fseek(f, 0, SEEK_SET); |
| 266 | old_data = malloc(size + size/8); |
| 267 | if (old_data != NULL) |
| 268 | { |
| 269 | optr = old_data; |
| 270 | while (!feof(f)) |
| 271 | { |
| 272 | tmp = fgets(line, sizeof(line), f); |
| 273 | if (tmp == NULL) break; |
| 274 | mystrip(line); |
| 275 | if (strncasecmp(line, "LastUsedROM", 11) == 0) |
| 276 | continue; |
| 277 | sprintf(optr, "%s", line); |
| 278 | optr += strlen(optr); |
| 279 | } |
| 280 | } |
| 281 | fclose(f); |
| 282 | } |
| 283 | |
| 284 | f = fopen(fname, "w"); |
| 285 | if (f == NULL) return -1; |
| 286 | |
| 287 | if (old_data != NULL) { |
| 288 | fwrite(old_data, 1, optr - old_data, f); |
| 289 | free(old_data); |
| 290 | } |
| 291 | fprintf(f, "LastUsedROM = %s" NL, currentConfig.lastRomFile); |
| 292 | fclose(f); |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | |
| 297 | static int custom_read(menu_entry *me, const char *var, const char *val) |
| 298 | { |
| 299 | char *tmp; |
| 300 | int tmpi; |
| 301 | |
| 302 | switch (me->id) |
| 303 | { |
| 304 | case MA_OPT_RENDERER: |
| 305 | if (strcasecmp(var, "Renderer") != 0) return 0; |
| 306 | if (strcasecmp(val, "8bit fast") == 0) { |
| 307 | PicoOpt |= 0x10; |
| 308 | } |
| 309 | else if (strcasecmp(val, "16bit accurate") == 0) { |
| 310 | PicoOpt &= ~0x10; |
| 311 | currentConfig.EmuOpt |= 0x80; |
| 312 | } |
| 313 | else if (strcasecmp(val, "8bit accurate") == 0) { |
| 314 | PicoOpt &= ~0x10; |
| 315 | currentConfig.EmuOpt &= ~0x80; |
| 316 | } |
| 317 | else |
| 318 | return 0; |
| 319 | return 1; |
| 320 | |
| 321 | case MA_OPT_SCALING: |
| 322 | if (strcasecmp(var, "Scaling") != 0) return 0; |
| 323 | if (strcasecmp(val, "OFF") == 0) { |
| 324 | currentConfig.scaling = 0; |
| 325 | } else if (strcasecmp(val, "hw horizontal") == 0) { |
| 326 | currentConfig.scaling = 1; |
| 327 | } else if (strcasecmp(val, "hw horiz. + vert.") == 0) { |
| 328 | currentConfig.scaling = 2; |
| 329 | } else if (strcasecmp(val, "sw horizontal") == 0) { |
| 330 | currentConfig.scaling = 3; |
| 331 | } else |
| 332 | return 0; |
| 333 | return 1; |
| 334 | |
| 335 | case MA_OPT_FRAMESKIP: |
| 336 | if (strcasecmp(var, "Frameskip") != 0) return 0; |
| 337 | if (strcasecmp(val, "Auto") == 0) |
| 338 | currentConfig.Frameskip = -1; |
| 339 | else currentConfig.Frameskip = atoi(val); |
| 340 | return 1; |
| 341 | |
| 342 | case MA_OPT_SOUND_QUALITY: |
| 343 | if (strcasecmp(var, "Sound Quality") != 0) return 0; |
| 344 | PsndRate = strtoul(val, &tmp, 10); |
| 345 | if (PsndRate < 8000 || PsndRate > 44100) |
| 346 | PsndRate = 22050; |
| 347 | while (*tmp == ' ') tmp++; |
| 348 | if (strcasecmp(tmp, "stereo") == 0) { |
| 349 | PicoOpt |= 8; |
| 350 | } else if (strcasecmp(tmp, "mono") == 0) { |
| 351 | PicoOpt &= ~8; |
| 352 | } else |
| 353 | return 0; |
| 354 | return 1; |
| 355 | |
| 356 | case MA_OPT_REGION: |
| 357 | if (strcasecmp(var, "Region") != 0) return 0; |
| 358 | if (strncasecmp(val, "Auto: ", 6) == 0) |
| 359 | { |
| 360 | const char *p = val + 5, *end = val + strlen(val); |
| 361 | int i; |
| 362 | PicoRegionOverride = PicoAutoRgnOrder = 0; |
| 363 | for (i = 0; p < end && i < 3; p += 3, i++) { |
| 364 | if (p[0] == 'J' && p[1] == 'P') { |
| 365 | PicoAutoRgnOrder |= 1 << (i*4); |
| 366 | } else if (p[0] == 'U' && p[1] == 'S') { |
| 367 | PicoAutoRgnOrder |= 4 << (i*4); |
| 368 | } else if (p[0] == 'E' && p[1] == 'U') { |
| 369 | PicoAutoRgnOrder |= 8 << (i*4); |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | else if (strcasecmp(val, "Auto") == 0) { |
| 374 | PicoRegionOverride = 0; |
| 375 | } else if (strcasecmp(val, "Japan NTSC") == 0) { |
| 376 | PicoRegionOverride = 1; |
| 377 | } else if (strcasecmp(val, "Japan PAL") == 0) { |
| 378 | PicoRegionOverride = 2; |
| 379 | } else if (strcasecmp(val, "USA") == 0) { |
| 380 | PicoRegionOverride = 4; |
| 381 | } else if (strcasecmp(val, "Europe") == 0) { |
| 382 | PicoRegionOverride = 8; |
| 383 | } else |
| 384 | return 0; |
| 385 | return 1; |
| 386 | |
| 387 | case MA_OPT_CONFIRM_STATES: |
| 388 | if (strcasecmp(var, "Confirm savestate") != 0) return 0; |
| 389 | if (strcasecmp(val, "OFF") == 0) { |
| 390 | currentConfig.EmuOpt &= 5<<9; |
| 391 | } else if (strcasecmp(val, "writes") == 0) { |
| 392 | currentConfig.EmuOpt &= 5<<9; |
| 393 | currentConfig.EmuOpt |= 1<<9; |
| 394 | } else if (strcasecmp(val, "loads") == 0) { |
| 395 | currentConfig.EmuOpt &= 5<<9; |
| 396 | currentConfig.EmuOpt |= 4<<9; |
| 397 | } else if (strcasecmp(val, "both") == 0) { |
| 398 | currentConfig.EmuOpt &= 5<<9; |
| 399 | currentConfig.EmuOpt |= 5<<9; |
| 400 | } else |
| 401 | return 0; |
| 402 | return 1; |
| 403 | |
| 404 | case MA_OPT_CPU_CLOCKS: |
| 405 | if (strcasecmp(var, "GP2X CPU clocks") != 0) return 0; |
| 406 | currentConfig.CPUclock = atoi(val); |
| 407 | return 1; |
| 408 | |
| 409 | case MA_OPT2_GAMMA: |
| 410 | if (strcasecmp(var, "Gamma correction") != 0) return 0; |
| 411 | currentConfig.gamma = (int) (atof(val) * 100.0); |
| 412 | return 1; |
| 413 | |
| 414 | case MA_OPT2_SQUIDGEHACK: |
| 415 | if (strcasecmp(var, "Squidgehack") != 0) return 0; |
| 416 | tmpi = atoi(val); |
| 417 | if (tmpi) *(int *)me->var |= me->mask; |
| 418 | else *(int *)me->var &= ~me->mask; |
| 419 | return 1; |
| 420 | |
| 421 | case MA_CDOPT_READAHEAD: |
| 422 | if (strcasecmp(var, "ReadAhead buffer") != 0) return 0; |
| 423 | PicoCDBuffers = atoi(val) / 2; |
| 424 | return 1; |
| 425 | |
| 426 | default: |
| 427 | if (strcasecmp(var, "LastUsedROM") == 0) { |
| 428 | tmpi = sizeof(currentConfig.lastRomFile); |
| 429 | strncpy(currentConfig.lastRomFile, val, tmpi); |
| 430 | currentConfig.lastRomFile[tmpi-1] = 0; |
| 431 | return 1; |
| 432 | } |
| 433 | printf("unhandled custom_read: %i\n", me->id); |
| 434 | return 0; |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | |
| 439 | static void parse(const char *var, const char *val) |
| 440 | { |
| 441 | menu_entry *me; |
| 442 | int t, i, tlen, tmp, ret = 0; |
| 443 | |
| 444 | for (t = 0; t < sizeof(cfg_opts) / sizeof(cfg_opts[0]) && ret == 0; t++) |
| 445 | { |
| 446 | me = cfg_opts[t]; |
| 447 | tlen = *(cfg_opt_counts[t]); |
| 448 | for (i = 0; i < tlen && ret == 0; i++, me++) |
| 449 | { |
| 450 | if (!me->need_to_save) continue; |
| 451 | if (me->name != NULL) { |
| 452 | if (strcasecmp(var, me->name) != 0) continue; // surely not this one |
| 453 | if (me->beh == MB_ONOFF) { |
| 454 | tmp = atoi(val); |
| 455 | if (tmp) *(int *)me->var |= me->mask; |
| 456 | else *(int *)me->var &= ~me->mask; |
| 457 | return; |
| 458 | } else if (me->beh == MB_RANGE) { |
| 459 | tmp = atoi(val); |
| 460 | if (tmp < me->min) tmp = me->min; |
| 461 | if (tmp > me->max) tmp = me->max; |
| 462 | *(int *)me->var = tmp; |
| 463 | return; |
| 464 | } |
| 465 | } |
| 466 | ret = custom_read(me, var, val); |
| 467 | } |
| 468 | } |
| 469 | if (!ret) printf("config_readsect: unhandled var: %s\n", var); |
| 470 | } |
| 471 | |
| 472 | |
| 473 | int config_readsect(const char *fname, const char *section) |
| 474 | { |
| 475 | char line[128], *var, *val, *tmp; |
| 476 | FILE *f = fopen(fname, "r"); |
| 477 | int len, i, ret; |
| 478 | |
| 479 | if (f == NULL) return 0; |
| 480 | |
| 481 | if (section != NULL) |
| 482 | { |
| 483 | ret = seek_sect(f, section); |
| 484 | if (!ret) { |
| 485 | printf("config_readsect: %s: missing section [%s]\n", fname, section); |
| 486 | fclose(f); |
| 487 | return -1; |
| 488 | } |
| 489 | } |
| 490 | |
| 491 | while (!feof(f)) |
| 492 | { |
| 493 | tmp = fgets(line, sizeof(line), f); |
| 494 | if (tmp == NULL) break; |
| 495 | |
| 496 | if (line[0] == '[') break; // other section |
| 497 | |
| 498 | // strip comments, linefeed, spaces.. |
| 499 | len = strlen(line); |
| 500 | for (i = 0; i < len; i++) |
| 501 | if (line[i] == '#' || line[i] == '\r' || line[i] == '\n') { line[i] = 0; break; } |
| 502 | mystrip(line); |
| 503 | len = strlen(line); |
| 504 | if (len <= 0) continue; |
| 505 | |
| 506 | // get var and val |
| 507 | for (i = 0; i < len; i++) |
| 508 | if (line[i] == '=') break; |
| 509 | if (i >= len || strchr(&line[i+1], '=') != NULL) { |
| 510 | printf("config_readsect: can't parse: %s\n", line); |
| 511 | continue; |
| 512 | } |
| 513 | line[i] = 0; |
| 514 | var = line; |
| 515 | val = &line[i+1]; |
| 516 | mystrip(var); |
| 517 | mystrip(val); |
| 518 | if (strlen(var) == 0 || strlen(val) == 0) { |
| 519 | printf("config_readsect: something's empty: \"%s\" = \"%s\"\n", var, val); |
| 520 | continue; |
| 521 | } |
| 522 | |
| 523 | parse(var, val); |
| 524 | } |
| 525 | |
| 526 | fclose(f); |
| 527 | return 0; |
| 528 | } |
| 529 | |