Pico/cd/cue.c

   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 (*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 - 3) : (fname - len);
  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 *cue_parse(const char *fname)
  62 {
  63         char buff[256], current_file[256], buff2[32];
  64         FILE *f, *tmpf;
  65         int ret, count = 0, count_alloc = 2;
  66         cue_data *data;
  67         void *tmp;
  68
  69         f = fopen(fname, "r");
  70         if (f == NULL) return NULL;
  71
  72         current_file[0] = 0;
  73         data = calloc(1, sizeof(*data) + count_alloc * sizeof(cue_track));
  74
  75         while (!feof(f))
  76         {
  77                 tmp = fgets(buff, sizeof(buff), f);
  78                 if (tmp == NULL) break;
  79
  80                 mystrip(buff);
  81                 if (buff[0] == 0) continue;
  82                 if      (BEGINS(buff, "TITLE ") || BEGINS(buff, "PERFORMER "))
  83                         continue;       /* who would put those here? Ignore! */
  84                 else if (BEGINS(buff, "FILE "))
  85                 {
  86                         get_token(buff+5, current_file, sizeof(current_file));
  87                 }
  88                 else if (BEGINS(buff, "TRACK "))
  89                 {
  90                         count++;
  91                         if (count >= count_alloc) {
  92                                 count_alloc *= 2;
  93                                 tmp = realloc(data, sizeof(*data) + count_alloc * sizeof(cue_track));
  94                                 if (tmp == NULL) { count--; break; }
  95                         }
  96                         memset(&data->tracks[count], 0, sizeof(data->tracks[0]));
  97                         if (count == 1 || strcmp(data->tracks[1].fname, current_file) != 0)
  98                         {
  99                                 data->tracks[count].fname = strdup(current_file);
 100                                 if (data->tracks[count].fname == NULL) break;
 101
 102                                 tmpf = fopen(current_file, "rb");
 103                                 if (tmpf == NULL) {
 104                                         elprintf(EL_STATUS, "cue: bad/missing file: \"%s\"", current_file);
 105                                         count--; break;
 106                                 }
 107                                 fclose(tmpf);
 108                         }
 109                         // track number
 110                         ret = get_token(buff+6, buff2, sizeof(buff2));
 111                         if (count != atoi(buff2))
 112                                 elprintf(EL_STATUS, "cue: track index mismatch: track %i is track %i in cue",
 113                                         count, atoi(buff2));
 114                         // check type
 115                         get_token(buff+6+ret, buff2, sizeof(buff2));
 116                         if      (strcmp(buff2, "MODE1/2352"))
 117                                 data->tracks[count].type = CT_BIN;
 118                         else if (strcmp(buff2, "MODE1/2048"))
 119                                 data->tracks[count].type = CT_ISO;
 120                         else if (strcmp(buff2, "AUDIO"))
 121                         {
 122                                 if (data->tracks[count].fname != NULL)
 123                                 {
 124                                         // rely on extension, not type in cue..
 125                                         char *ext = get_ext(data->tracks[count].fname);
 126                                         if      (strcasecmp(ext, "mp3") == 0)
 127                                                 data->tracks[count].type = CT_MP3;
 128                                         else if (strcasecmp(ext, "wav") == 0)
 129                                                 data->tracks[count].type = CT_WAV;
 130                                         else {
 131                                                 elprintf(EL_STATUS, "unhandled audio format: \"%s\"",
 132                                                         data->tracks[count].fname);
 133                                         }
 134                                 }
 135                         }
 136                         else {
 137                                 elprintf(EL_STATUS, "unhandled track type: \"%s\"", buff2);
 138                         }
 139                 }
 140                 else if (BEGINS(buff, "INDEX "))
 141                 {
 142                         int m, s, f;
 143                         // type
 144                         ret = get_token(buff+6, buff2, sizeof(buff2));
 145                         if (atoi(buff2) == 0) continue;
 146                         if (atoi(buff2) != 1) {
 147                                 elprintf(EL_STATUS, "cue: don't know how to handle: \"%s\"", buff);
 148                                 count--; break;
 149                         }
 150                         // offset in file
 151                         get_token(buff+6+ret, buff2, sizeof(buff2));
 152                         ret = sscanf(buff2, "%i:%i:%i", &m, &s, &f);
 153                         if (ret != 3) {
 154                                 elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff);
 155                                 count--; break;
 156                         }
 157                         data->tracks[count].sector_offset = m*60*75 + s*75 + f;
 158                 }
 159                 else if (BEGINS(buff, "PREGAP "))
 160                 {
 161                         int m, s, f;
 162                         get_token(buff+7, buff2, sizeof(buff2));
 163                         ret = sscanf(buff2, "%i:%i:%i", &m, &s, &f);
 164                         if (ret != 3) {
 165                                 elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff);
 166                                 continue;
 167                         }
 168                         data->tracks[count].pregap = m*60*75 + s*75 + f;
 169                 }
 170                 else
 171                 {
 172                         elprintf(EL_STATUS, "cue: failed to parse: \"%s\"", buff);
 173                 }
 174         }
 175
 176         if (count < 1 || data->tracks[1].fname == NULL) {
 177                 // failed..
 178                 for (; count > 0; count--)
 179                         if (data->tracks[count].fname != NULL)
 180                                 free(data->tracks[count].fname);
 181                 free(data);
 182                 return NULL;
 183         }
 184
 185         data->track_count = count;
 186         return data;
 187 }
 188
 189
 190 void cue_destroy(cue_data *data)
 191 {
 192         int c;
 193
 194         if (data == NULL) return;
 195
 196         for (c = data->track_count; c > 0; c--)
 197                 if (data->tracks[c].fname != NULL)
 198                         free(data->tracks[c].fname);
 199         free(data);
 200 }
 201
 202
 203 int main(int argc, char *argv[])
 204 {
 205         cue_data *data = cue_parse(argv[1]);
 206         int c;
 207
 208         if (data == NULL) return 1;
 209
 210         for (c = 1; c <= data->track_count; c++)
 211                 printf("%2i: %i %9i %9i %s\n", c, data->tracks[c].type, data->tracks[c].sector_offset,
 212                         data->tracks[c].pregap, data->tracks[c].fname);
 213
 214         cue_destroy(data);
 215
 216         return 0;
 217 }
 218