| 1 | /* |
| 2 | * cuefile handling |
| 3 | * (C) notaz, 2008 |
| 4 | * |
| 5 | * This work is licensed under the terms of MAME license. |
| 6 | * See COPYING file in the top-level directory. |
| 7 | */ |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | #include "cue.h" |
| 12 | |
| 13 | #include "../pico_int.h" |
| 14 | // #define elprintf(w,f,...) printf(f "\n",##__VA_ARGS__); |
| 15 | |
| 16 | #ifdef _MSC_VER |
| 17 | #define snprintf _snprintf |
| 18 | #endif |
| 19 | #ifdef __EPOC32__ |
| 20 | #define snprintf(b,s,...) sprintf(b,##__VA_ARGS__) |
| 21 | #endif |
| 22 | |
| 23 | static char *mystrip(char *str) |
| 24 | { |
| 25 | int i, len; |
| 26 | |
| 27 | len = strlen(str); |
| 28 | for (i = 0; i < len; i++) |
| 29 | if (str[i] != ' ') break; |
| 30 | if (i > 0) memmove(str, str + i, len - i + 1); |
| 31 | |
| 32 | len = strlen(str); |
| 33 | for (i = len - 1; i >= 0; i--) |
| 34 | if (str[i] != ' ' && str[i] != '\r' && str[i] != '\n') break; |
| 35 | str[i+1] = 0; |
| 36 | |
| 37 | return str; |
| 38 | } |
| 39 | |
| 40 | static int get_token(const char *buff, char *dest, int len) |
| 41 | { |
| 42 | const char *p = buff; |
| 43 | char sep = ' '; |
| 44 | int d = 0, skip = 0; |
| 45 | |
| 46 | while (*p && *p == ' ') { |
| 47 | skip++; |
| 48 | p++; |
| 49 | } |
| 50 | |
| 51 | if (*p == '\"') { |
| 52 | sep = '\"'; |
| 53 | p++; |
| 54 | } |
| 55 | while (*p && *p != sep && d < len-1) |
| 56 | dest[d++] = *p++; |
| 57 | dest[d] = 0; |
| 58 | |
| 59 | if (sep == '\"' && *p != sep) |
| 60 | elprintf(EL_STATUS, "cue: bad token: \"%s\"", buff); |
| 61 | |
| 62 | return d + skip; |
| 63 | } |
| 64 | |
| 65 | static int get_ext(const char *fname, char ext[4], |
| 66 | char *base, size_t base_size) |
| 67 | { |
| 68 | int len, pos = 0; |
| 69 | |
| 70 | len = strlen(fname); |
| 71 | if (len >= 3) |
| 72 | pos = len - 3; |
| 73 | |
| 74 | strcpy(ext, fname + pos); |
| 75 | |
| 76 | if (base != NULL) { |
| 77 | len = pos; |
| 78 | if (len + 1 < base_size) |
| 79 | len = base_size - 1; |
| 80 | memcpy(base, fname, len); |
| 81 | base[len] = 0; |
| 82 | } |
| 83 | return pos; |
| 84 | } |
| 85 | |
| 86 | static void change_case(char *p, int to_upper) |
| 87 | { |
| 88 | for (; *p != 0; p++) { |
| 89 | if (to_upper && 'a' <= *p && *p <= 'z') |
| 90 | *p += 'A' - 'a'; |
| 91 | else if (!to_upper && 'A' <= *p && *p <= 'Z') |
| 92 | *p += 'a' - 'A'; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | static int file_openable(const char *fname) |
| 97 | { |
| 98 | FILE *f = fopen(fname, "rb"); |
| 99 | if (f == NULL) |
| 100 | return 0; |
| 101 | fclose(f); |
| 102 | return 1; |
| 103 | } |
| 104 | |
| 105 | #define BEGINS(buff,str) (strncmp(buff,str,sizeof(str)-1) == 0) |
| 106 | |
| 107 | /* note: tracks[0] is not used */ |
| 108 | cue_data_t *cue_parse(const char *fname) |
| 109 | { |
| 110 | char current_file[256], *current_filep, cue_base[256]; |
| 111 | char buff[256], buff2[32], ext[4], *p; |
| 112 | int ret, count = 0, count_alloc = 2, pending_pregap = 0; |
| 113 | size_t current_filep_size, fname_len; |
| 114 | cue_data_t *data = NULL; |
| 115 | FILE *f = NULL; |
| 116 | void *tmp; |
| 117 | |
| 118 | if (fname == NULL || (fname_len = strlen(fname)) == 0) |
| 119 | return NULL; |
| 120 | |
| 121 | ret = get_ext(fname, ext, cue_base, sizeof(cue_base)); |
| 122 | if (strcasecmp(ext, "cue") == 0) { |
| 123 | f = fopen(fname, "r"); |
| 124 | } |
| 125 | else { |
| 126 | // not a .cue, try one with the same base name |
| 127 | if (ret + 3 < sizeof(cue_base)) { |
| 128 | strcpy(cue_base + ret, "cue"); |
| 129 | f = fopen(cue_base, "r"); |
| 130 | if (f == NULL) { |
| 131 | strcpy(cue_base + ret, "CUE"); |
| 132 | f = fopen(cue_base, "r"); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | if (f == NULL) |
| 138 | return NULL; |
| 139 | |
| 140 | snprintf(current_file, sizeof(current_file), "%s", fname); |
| 141 | current_filep = current_file + strlen(current_file); |
| 142 | for (; current_filep > current_file; current_filep--) |
| 143 | if (current_filep[-1] == '/' || current_filep[-1] == '\\') |
| 144 | break; |
| 145 | |
| 146 | current_filep_size = sizeof(current_file) - (current_filep - current_file); |
| 147 | |
| 148 | // the basename of cuefile, no path |
| 149 | snprintf(cue_base, sizeof(cue_base), "%s", current_filep); |
| 150 | p = cue_base + strlen(cue_base); |
| 151 | if (p - 3 >= cue_base) |
| 152 | p[-3] = 0; |
| 153 | |
| 154 | data = calloc(1, sizeof(*data) + count_alloc * sizeof(cue_track)); |
| 155 | if (data == NULL) |
| 156 | goto out; |
| 157 | |
| 158 | while (!feof(f)) |
| 159 | { |
| 160 | tmp = fgets(buff, sizeof(buff), f); |
| 161 | if (tmp == NULL) |
| 162 | break; |
| 163 | |
| 164 | mystrip(buff); |
| 165 | if (buff[0] == 0) |
| 166 | continue; |
| 167 | if (BEGINS(buff, "TITLE ") || BEGINS(buff, "PERFORMER ") || BEGINS(buff, "SONGWRITER ")) |
| 168 | continue; /* who would put those here? Ignore! */ |
| 169 | else if (BEGINS(buff, "FILE ")) |
| 170 | { |
| 171 | get_token(buff + 5, current_filep, current_filep_size); |
| 172 | } |
| 173 | else if (BEGINS(buff, "TRACK ")) |
| 174 | { |
| 175 | count++; |
| 176 | if (count >= count_alloc) { |
| 177 | count_alloc *= 2; |
| 178 | tmp = realloc(data, sizeof(*data) + count_alloc * sizeof(cue_track)); |
| 179 | if (tmp == NULL) { |
| 180 | count--; |
| 181 | break; |
| 182 | } |
| 183 | data = tmp; |
| 184 | } |
| 185 | memset(&data->tracks[count], 0, sizeof(data->tracks[0])); |
| 186 | |
| 187 | if (count == 1 || strcmp(data->tracks[1].fname, current_file) != 0) |
| 188 | { |
| 189 | if (file_openable(current_file)) |
| 190 | goto file_ok; |
| 191 | |
| 192 | elprintf(EL_STATUS, "cue: bad/missing file: \"%s\"", current_file); |
| 193 | if (count == 1) { |
| 194 | int cue_ucase; |
| 195 | char v; |
| 196 | |
| 197 | get_ext(current_file, ext, NULL, 0); |
| 198 | snprintf(current_filep, current_filep_size, |
| 199 | "%s%s", cue_base, ext); |
| 200 | if (file_openable(current_file)) |
| 201 | goto file_ok; |
| 202 | |
| 203 | // try with the same case (for unix) |
| 204 | v = fname[fname_len - 1]; |
| 205 | cue_ucase = ('A' <= v && v <= 'Z'); |
| 206 | change_case(ext, cue_ucase); |
| 207 | |
| 208 | snprintf(current_filep, current_filep_size, |
| 209 | "%s%s", cue_base, ext); |
| 210 | if (file_openable(current_file)) |
| 211 | goto file_ok; |
| 212 | } |
| 213 | |
| 214 | count--; |
| 215 | break; |
| 216 | |
| 217 | file_ok: |
| 218 | data->tracks[count].fname = strdup(current_file); |
| 219 | if (data->tracks[count].fname == NULL) |
| 220 | break; |
| 221 | } |
| 222 | data->tracks[count].pregap = pending_pregap; |
| 223 | pending_pregap = 0; |
| 224 | // track number |
| 225 | ret = get_token(buff+6, buff2, sizeof(buff2)); |
| 226 | if (count != atoi(buff2)) |
| 227 | elprintf(EL_STATUS, "cue: track index mismatch: track %i is track %i in cue", |
| 228 | count, atoi(buff2)); |
| 229 | // check type |
| 230 | get_token(buff+6+ret, buff2, sizeof(buff2)); |
| 231 | if (strcmp(buff2, "MODE1/2352") == 0) |
| 232 | data->tracks[count].type = CT_BIN; |
| 233 | else if (strcmp(buff2, "MODE1/2048") == 0) |
| 234 | data->tracks[count].type = CT_ISO; |
| 235 | else if (strcmp(buff2, "AUDIO") == 0) |
| 236 | { |
| 237 | if (data->tracks[count].fname != NULL) |
| 238 | { |
| 239 | // rely on extension, not type in cue.. |
| 240 | get_ext(data->tracks[count].fname, ext, NULL, 0); |
| 241 | if (strcasecmp(ext, "mp3") == 0) |
| 242 | data->tracks[count].type = CT_MP3; |
| 243 | else if (strcasecmp(ext, "wav") == 0) |
| 244 | data->tracks[count].type = CT_WAV; |
| 245 | else if (strcasecmp(ext, "bin") == 0) |
| 246 | data->tracks[count].type = CT_BIN; |
| 247 | else { |
| 248 | elprintf(EL_STATUS, "unhandled audio format: \"%s\"", |
| 249 | data->tracks[count].fname); |
| 250 | } |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | // propagate previous |
| 255 | data->tracks[count].type = data->tracks[count-1].type; |
| 256 | } |
| 257 | } |
| 258 | else { |
| 259 | elprintf(EL_STATUS, "unhandled track type: \"%s\"", buff2); |
| 260 | } |
| 261 | } |
| 262 | else if (BEGINS(buff, "INDEX ")) |
| 263 | { |
| 264 | int m, s, f; |
| 265 | // type |
| 266 | ret = get_token(buff+6, buff2, sizeof(buff2)); |
| 267 | if (atoi(buff2) == 0) continue; |
| 268 | if (atoi(buff2) != 1) { |
| 269 | elprintf(EL_STATUS, "cue: don't know how to handle: \"%s\"", buff); |
| 270 | count--; break; |
| 271 | } |
| 272 | // offset in file |
| 273 | get_token(buff+6+ret, buff2, sizeof(buff2)); |
| 274 | ret = sscanf(buff2, "%d:%d:%d", &m, &s, &f); |
| 275 | if (ret != 3) { |
| 276 | elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff); |
| 277 | count--; break; |
| 278 | } |
| 279 | data->tracks[count].sector_offset = m*60*75 + s*75 + f; |
| 280 | // some strange .cues may need this |
| 281 | if (data->tracks[count].fname != NULL && strcmp(data->tracks[count].fname, current_file) != 0) |
| 282 | { |
| 283 | free(data->tracks[count].fname); |
| 284 | data->tracks[count].fname = strdup(current_file); |
| 285 | } |
| 286 | if (data->tracks[count].fname == NULL && strcmp(data->tracks[1].fname, current_file) != 0) |
| 287 | { |
| 288 | data->tracks[count].fname = strdup(current_file); |
| 289 | } |
| 290 | } |
| 291 | else if (BEGINS(buff, "PREGAP ") || BEGINS(buff, "POSTGAP ")) |
| 292 | { |
| 293 | int m, s, f; |
| 294 | get_token(buff+7, buff2, sizeof(buff2)); |
| 295 | ret = sscanf(buff2, "%d:%d:%d", &m, &s, &f); |
| 296 | if (ret != 3) { |
| 297 | elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff); |
| 298 | continue; |
| 299 | } |
| 300 | // pregap overrides previous postgap? |
| 301 | // by looking at some .cues produced by some programs I've decided that.. |
| 302 | if (BEGINS(buff, "PREGAP ")) |
| 303 | data->tracks[count].pregap = m*60*75 + s*75 + f; |
| 304 | else |
| 305 | pending_pregap = m*60*75 + s*75 + f; |
| 306 | } |
| 307 | else if (BEGINS(buff, "REM LENGTH ")) // custom "extension" |
| 308 | { |
| 309 | int m, s, f; |
| 310 | get_token(buff+11, buff2, sizeof(buff2)); |
| 311 | ret = sscanf(buff2, "%d:%d:%d", &m, &s, &f); |
| 312 | if (ret != 3) continue; |
| 313 | data->tracks[count].sector_xlength = m*60*75 + s*75 + f; |
| 314 | } |
| 315 | else if (BEGINS(buff, "REM")) |
| 316 | continue; |
| 317 | else |
| 318 | { |
| 319 | elprintf(EL_STATUS, "cue: unhandled line: \"%s\"", buff); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | if (count < 1 || data->tracks[1].fname == NULL) { |
| 324 | // failed.. |
| 325 | for (; count > 0; count--) |
| 326 | if (data->tracks[count].fname != NULL) |
| 327 | free(data->tracks[count].fname); |
| 328 | free(data); |
| 329 | data = NULL; |
| 330 | goto out; |
| 331 | } |
| 332 | |
| 333 | data->track_count = count; |
| 334 | |
| 335 | out: |
| 336 | if (f != NULL) |
| 337 | fclose(f); |
| 338 | return data; |
| 339 | } |
| 340 | |
| 341 | |
| 342 | void cue_destroy(cue_data_t *data) |
| 343 | { |
| 344 | int c; |
| 345 | |
| 346 | if (data == NULL) return; |
| 347 | |
| 348 | for (c = data->track_count; c > 0; c--) |
| 349 | if (data->tracks[c].fname != NULL) |
| 350 | free(data->tracks[c].fname); |
| 351 | free(data); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | #if 0 |
| 356 | int main(int argc, char *argv[]) |
| 357 | { |
| 358 | cue_data_t *data = cue_parse(argv[1]); |
| 359 | int c; |
| 360 | |
| 361 | if (data == NULL) return 1; |
| 362 | |
| 363 | for (c = 1; c <= data->track_count; c++) |
| 364 | printf("%2i: %i %9i %02i:%02i:%02i %9i %s\n", c, data->tracks[c].type, data->tracks[c].sector_offset, |
| 365 | data->tracks[c].sector_offset / (75*60), data->tracks[c].sector_offset / 75 % 60, |
| 366 | data->tracks[c].sector_offset % 75, data->tracks[c].pregap, data->tracks[c].fname); |
| 367 | |
| 368 | cue_destroy(data); |
| 369 | |
| 370 | return 0; |
| 371 | } |
| 372 | #endif |
| 373 | |