Mercurial > repos > blastem
view romdb.c @ 764:bb60259e8edf
Initial work on ROM database
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 02 Jul 2015 19:19:06 -0700 |
parents | |
children | dc54387ee1cd |
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#include <stdlib.h> #include <string.h> #include "config.h" #include "romdb.h" #include "util.h" #define GAME_ID_OFF 0x183 #define GAME_ID_LEN 8 #define TITLE_START 0x150 #define TITLE_END (TITLE_START+48) tern_node *load_rom_db() { char *exe_dir = get_exe_dir(); if (!exe_dir) { fputs("Failed to find executable path\n", stderr); exit(1); } char *path = alloc_concat(exe_dir, "/rom.db"); tern_node *db = parse_config_file(path); free(path); if (!db) { fputs("Failed to load ROM DB\n", stderr); } return db; } char *get_header_name(uint8_t *rom) { uint8_t *last = rom + TITLE_END - 1; uint8_t *src = rom + TITLE_START; while (last > src && (*last <= 0x20 || *last >= 0x80)) { last--; } if (last == src) { //TODO: Use other name field return strdup("UNKNOWN"); } else { last++; char *ret = malloc(last - (rom + TITLE_START) + 1); uint8_t *dst; for (dst = ret; src < last; src++) { if (*src >= 0x20 && *src < 0x80) { *(dst++) = *src; } } *dst = 0; return ret; } } rom_info configure_rom_heuristics(uint8_t *rom) { rom_info info; info.name = get_header_name(rom); } rom_info configure_rom(tern_node *rom_db, void *vrom) { uint8_t product_id[GAME_ID_LEN+1]; uint8_t *rom = vrom; product_id[GAME_ID_LEN] = 0; for (int i = 0; i < GAME_ID_LEN; i++) { if (rom[GAME_ID_OFF + i] <= ' ') { product_id[i] = 0; break; } product_id[i] = rom[GAME_ID_OFF + i]; } tern_node * entry = tern_find_prefix(rom_db, product_id); if (!entry) { return configure_rom_heuristics(rom); } rom_info info; info.name = strdup(tern_find_ptr_default(entry, "name", "UNKNOWN")); return info; }