| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | #include "cue.h" |
| 5 | |
| 6 | #include "../PicoInt.h" |
| 7 | // #define elprintf(w,f,...) printf(f "\n",##__VA_ARGS__); |
| 8 | |
| 9 | static char *mystrip(char *str) |
| 10 | { |
| 11 | int i, len; |
| 12 | |
| 13 | len = strlen(str); |
| 14 | for (i = 0; i < len; i++) |
| 15 | if (str[i] != ' ') break; |
| 16 | if (i > 0) memmove(str, str + i, len - i + 1); |
| 17 | |
| 18 | len = strlen(str); |
| 19 | for (i = len - 1; i >= 0; i--) |
| 20 | if (str[i] != ' ' && str[i] != '\r' && str[i] != '\n') break; |
| 21 | str[i+1] = 0; |
| 22 | |
| 23 | return str; |
| 24 | } |
| 25 | |
| 26 | static int get_token(const char *buff, char *dest, int len) |
| 27 | { |
| 28 | const char *p = buff; |
| 29 | char sep = ' '; |
| 30 | int d = 0, skip = 0; |
| 31 | |
| 32 | while (*p && *p == ' ') { |
| 33 | skip++; |
| 34 | p++; |
| 35 | } |
| 36 | |
| 37 | if (*p == '\"') { |
| 38 | sep = '\"'; |
| 39 | p++; |
| 40 | } |
| 41 | while (*p && *p != sep && d < len-1) |
| 42 | dest[d++] = *p++; |
| 43 | dest[d] = 0; |
| 44 | |
| 45 | if (sep == '\"' && *p != sep) |
| 46 | elprintf(EL_STATUS, "cue: bad token: \"%s\"", buff); |
| 47 | |
| 48 | return d + skip; |
| 49 | } |
| 50 | |
| 51 | static char *get_ext(char *fname) |
| 52 | { |
| 53 | int len = strlen(fname); |
| 54 | return (len >= 3) ? (fname + len - 3) : fname; |
| 55 | } |
| 56 | |
| 57 | |
| 58 | #define BEGINS(buff,str) (strncmp(buff,str,sizeof(str)-1) == 0) |
| 59 | |
| 60 | /* note: tracks[0] is not used */ |
| 61 | cue_data_t *cue_parse(const char *fname) |
| 62 | { |
| 63 | char buff[256], current_file[256], buff2[32], *current_filep; |
| 64 | FILE *f, *tmpf; |
| 65 | int ret, count = 0, count_alloc = 2, pending_pregap = 0; |
| 66 | cue_data_t *data; |
| 67 | void *tmp; |
| 68 | |
| 69 | f = fopen(fname, "r"); |
| 70 | if (f == NULL) return NULL; |
| 71 | |
| 72 | snprintf(current_file, sizeof(current_file), "%s", fname); |
| 73 | for (current_filep = current_file + strlen(current_file); current_filep > current_file; current_filep--) |
| 74 | if (current_filep[-1] == '/' || current_filep[-1] == '\\') break; |
| 75 | |
| 76 | data = calloc(1, sizeof(*data) + count_alloc * sizeof(cue_track)); |
| 77 | if (data == NULL) { |
| 78 | fclose(f); |
| 79 | return NULL; |
| 80 | } |
| 81 | |
| 82 | while (!feof(f)) |
| 83 | { |
| 84 | tmp = fgets(buff, sizeof(buff), f); |
| 85 | if (tmp == NULL) break; |
| 86 | |
| 87 | mystrip(buff); |
| 88 | if (buff[0] == 0) continue; |
| 89 | if (BEGINS(buff, "REM")) |
| 90 | continue; |
| 91 | else if (BEGINS(buff, "TITLE ") || BEGINS(buff, "PERFORMER ") || BEGINS(buff, "SONGWRITER ")) |
| 92 | continue; /* who would put those here? Ignore! */ |
| 93 | else if (BEGINS(buff, "FILE ")) |
| 94 | { |
| 95 | get_token(buff+5, current_filep, sizeof(current_file) - (current_filep - current_file)); |
| 96 | } |
| 97 | else if (BEGINS(buff, "TRACK ")) |
| 98 | { |
| 99 | count++; |
| 100 | if (count >= count_alloc) { |
| 101 | count_alloc *= 2; |
| 102 | tmp = realloc(data, sizeof(*data) + count_alloc * sizeof(cue_track)); |
| 103 | if (tmp == NULL) { count--; break; } |
| 104 | data = tmp; |
| 105 | } |
| 106 | memset(&data->tracks[count], 0, sizeof(data->tracks[0])); |
| 107 | if (count == 1 || strcmp(data->tracks[1].fname, current_file) != 0) |
| 108 | { |
| 109 | data->tracks[count].fname = strdup(current_file); |
| 110 | if (data->tracks[count].fname == NULL) break; |
| 111 | |
| 112 | tmpf = fopen(current_file, "rb"); |
| 113 | if (tmpf == NULL) { |
| 114 | elprintf(EL_STATUS, "cue: bad/missing file: \"%s\"", current_file); |
| 115 | count--; break; |
| 116 | } |
| 117 | fclose(tmpf); |
| 118 | } |
| 119 | data->tracks[count].pregap = pending_pregap; |
| 120 | pending_pregap = 0; |
| 121 | // track number |
| 122 | ret = get_token(buff+6, buff2, sizeof(buff2)); |
| 123 | if (count != atoi(buff2)) |
| 124 | elprintf(EL_STATUS, "cue: track index mismatch: track %i is track %i in cue", |
| 125 | count, atoi(buff2)); |
| 126 | // check type |
| 127 | get_token(buff+6+ret, buff2, sizeof(buff2)); |
| 128 | if (strcmp(buff2, "MODE1/2352") == 0) |
| 129 | data->tracks[count].type = CT_BIN; |
| 130 | else if (strcmp(buff2, "MODE1/2048") == 0) |
| 131 | data->tracks[count].type = CT_ISO; |
| 132 | else if (strcmp(buff2, "AUDIO") == 0) |
| 133 | { |
| 134 | if (data->tracks[count].fname != NULL) |
| 135 | { |
| 136 | // rely on extension, not type in cue.. |
| 137 | char *ext = get_ext(data->tracks[count].fname); |
| 138 | if (strcasecmp(ext, "mp3") == 0) |
| 139 | data->tracks[count].type = CT_MP3; |
| 140 | else if (strcasecmp(ext, "wav") == 0) |
| 141 | data->tracks[count].type = CT_WAV; |
| 142 | else { |
| 143 | elprintf(EL_STATUS, "unhandled audio format: \"%s\"", |
| 144 | data->tracks[count].fname); |
| 145 | } |
| 146 | } |
| 147 | else |
| 148 | { |
| 149 | // propagate previous |
| 150 | data->tracks[count].type = data->tracks[count-1].type; |
| 151 | } |
| 152 | } |
| 153 | else { |
| 154 | elprintf(EL_STATUS, "unhandled track type: \"%s\"", buff2); |
| 155 | } |
| 156 | } |
| 157 | else if (BEGINS(buff, "INDEX ")) |
| 158 | { |
| 159 | int m, s, f; |
| 160 | // type |
| 161 | ret = get_token(buff+6, buff2, sizeof(buff2)); |
| 162 | if (atoi(buff2) == 0) continue; |
| 163 | if (atoi(buff2) != 1) { |
| 164 | elprintf(EL_STATUS, "cue: don't know how to handle: \"%s\"", buff); |
| 165 | count--; break; |
| 166 | } |
| 167 | // offset in file |
| 168 | get_token(buff+6+ret, buff2, sizeof(buff2)); |
| 169 | ret = sscanf(buff2, "%d:%d:%d", &m, &s, &f); |
| 170 | if (ret != 3) { |
| 171 | elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff); |
| 172 | count--; break; |
| 173 | } |
| 174 | data->tracks[count].sector_offset = m*60*75 + s*75 + f; |
| 175 | // some strange .cues may need this |
| 176 | if (data->tracks[count].fname != NULL && strcmp(data->tracks[count].fname, current_file) != 0) |
| 177 | { |
| 178 | free(data->tracks[count].fname); |
| 179 | data->tracks[count].fname = strdup(current_file); |
| 180 | } |
| 181 | if (data->tracks[count].fname == NULL && strcmp(data->tracks[1].fname, current_file) != 0) |
| 182 | { |
| 183 | data->tracks[count].fname = strdup(current_file); |
| 184 | } |
| 185 | } |
| 186 | else if (BEGINS(buff, "PREGAP ") || BEGINS(buff, "POSTGAP ")) |
| 187 | { |
| 188 | int m, s, f; |
| 189 | get_token(buff+7, buff2, sizeof(buff2)); |
| 190 | ret = sscanf(buff2, "%d:%d:%d", &m, &s, &f); |
| 191 | if (ret != 3) { |
| 192 | elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff); |
| 193 | continue; |
| 194 | } |
| 195 | // pregap overrides previous postgap? |
| 196 | // by looking at some .cues produced by some programs I've decided that.. |
| 197 | if (BEGINS(buff, "PREGAP ")) |
| 198 | data->tracks[count].pregap = m*60*75 + s*75 + f; |
| 199 | else |
| 200 | pending_pregap = m*60*75 + s*75 + f; |
| 201 | } |
| 202 | else |
| 203 | { |
| 204 | elprintf(EL_STATUS, "cue: unhandled line: \"%s\"", buff); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | if (count < 1 || data->tracks[1].fname == NULL) { |
| 209 | // failed.. |
| 210 | for (; count > 0; count--) |
| 211 | if (data->tracks[count].fname != NULL) |
| 212 | free(data->tracks[count].fname); |
| 213 | free(data); |
| 214 | return NULL; |
| 215 | } |
| 216 | |
| 217 | data->track_count = count; |
| 218 | return data; |
| 219 | } |
| 220 | |
| 221 | |
| 222 | void cue_destroy(cue_data_t *data) |
| 223 | { |
| 224 | int c; |
| 225 | |
| 226 | if (data == NULL) return; |
| 227 | |
| 228 | for (c = data->track_count; c > 0; c--) |
| 229 | if (data->tracks[c].fname != NULL) |
| 230 | free(data->tracks[c].fname); |
| 231 | free(data); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | #if 0 |
| 236 | int main(int argc, char *argv[]) |
| 237 | { |
| 238 | cue_data_t *data = cue_parse(argv[1]); |
| 239 | int c; |
| 240 | |
| 241 | if (data == NULL) return 1; |
| 242 | |
| 243 | for (c = 1; c <= data->track_count; c++) |
| 244 | printf("%2i: %i %9i %02i:%02i:%02i %9i %s\n", c, data->tracks[c].type, data->tracks[c].sector_offset, |
| 245 | data->tracks[c].sector_offset / (75*60), data->tracks[c].sector_offset / 75 % 60, |
| 246 | data->tracks[c].sector_offset % 75, data->tracks[c].pregap, data->tracks[c].fname); |
| 247 | |
| 248 | cue_destroy(data); |
| 249 | |
| 250 | return 0; |
| 251 | } |
| 252 | #endif |
| 253 | |