src/tagview.c

   1 /* coded by Ketmar // Vampire Avalon (psyc://ketmar.no-ip.org/~Ketmar)
   2  * Understanding is not required. Only obedience.
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 #ifndef _BSD_SOURCE
  18 # define _BSD_SOURCE
  19 #endif
  20
  21 //#include <ctype.h>
  22 #include <dirent.h>
  23 #include <iconv.h>
  24 #include <limits.h>
  25 #include <stdint.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <unistd.h>
  30
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33
  34 #include <tag_c.h>
  35
  36 #include "common.h"
  37
  38 #include "translit.h"
  39
  40
  41 ////////////////////////////////////////////////////////////////////////////////
  42 static char *trimstr (char *s) {
  43   char *res = s;
  44   if (s != NULL && s[0]) {
  45     //char *olds = strdup(s), *xs = s;
  46     char *ns, *p;
  47     // change all '/' to underlines
  48     for (ns = s; *ns; ++ns) if (*ns == '/' || *ns == 127) *ns = '_';
  49     // remove duplicate underlines
  50     for (ns = p = s; *ns; ++ns) {
  51       if (*ns == '_') {
  52         if (p > s && p[-1] != '_') *p++ = *ns;
  53       } else {
  54         *p++ = *ns;
  55       }
  56     }
  57     *p = 0;
  58     // remove duplicate spaces
  59     for (ns = p = s; *ns; ++ns) {
  60       if (leIsSpace(*ns)) {
  61         if (p > s && !leIsSpace(p[-1])) *p++ = *ns;
  62       } else {
  63         *p++ = *ns;
  64       }
  65     }
  66     *p = 0;
  67     // trim trailing spaces and underlines
  68     ns = s+strlen(s)-1;
  69     while (ns >= s && (leIsSpace(*ns) || *ns == '_')) --ns;
  70     ns[1] = 0;
  71     // trim leading spaces and underlines
  72     for (ns = s; *ns && (leIsSpace(*ns) || *ns == '_'); ++ns) ;
  73     if (ns != s) memmove(s, ns, strlen(ns)+1);
  74   }
  75   return res;
  76 }
  77
  78
  79 ////////////////////////////////////////////////////////////////////////////////
  80 #define xstrdup(ss)  ({ \
  81   const char *s = ss; \
  82   char *d = alloca(s != NULL ? strlen(s)+1 : 1); \
  83   if (s != NULL) strcpy(d, s); \
  84   d; \
  85 })
  86
  87 static int show_tags (const char *filename, int donl) {
  88   int res = 0;
  89   TagLib_Tag *tag;
  90   //const TagLib_AudioProperties *properties;
  91   TagLib_File *file;
  92   taglib_set_strings_unicode(1);
  93   file = taglib_file_new(filename);
  94   if (file == NULL) return 0;
  95   tag = taglib_file_tag(file);
  96   if (tag != NULL) {
  97     char *artist = trimstr(xstrdup(taglib_tag_artist(tag)));
  98     char *album = trimstr(xstrdup(taglib_tag_album(tag)));
  99     char *title = trimstr(xstrdup(taglib_tag_title(tag)));
 100     char *genre = trimstr(xstrdup(taglib_tag_genre(tag)));
 101     unsigned int yy = taglib_tag_year(tag);
 102     unsigned int tno = taglib_tag_track(tag);
 103     //
 104     if (yy > 0) {
 105       if (yy < 30) yy += 2000;
 106       else if (yy < 100) yy += 1900;
 107       else if (yy < 1930) yy = 0;
 108     }
 109     if (tno == 0 || tno > 99) tno = 0;
 110     if (artist[0] || album[0] || title[0] || genre[0] || yy || tno) {
 111       if (donl) printf("\n");
 112       if (artist[0]) printf("ARTIST=%s\n", artist);
 113       if (album[0]) printf("ALBUM=%s\n", album);
 114       if (title[0]) printf("TITLE=%s\n", title);
 115       if (genre[0]) printf("GENRE=%s\n", genre);
 116       if (yy) printf("YEAR=%u\n", yy);
 117       if (tno) printf("TRACKNUMBER=%u\n", tno);
 118       res = 1;
 119     }
 120     // fuck comments
 121   }
 122   //
 123   /*
 124   properties = taglib_file_audioproperties(file);
 125   if (properties != NULL) {
 126     int seconds = taglib_audioproperties_length(properties)%60;
 127     int minutes = (taglib_audioproperties_length(properties)-seconds)/60;
 128     printf("-- AUDIO --\n");
 129     printf("bitrate    : %d\n", taglib_audioproperties_bitrate(properties));
 130     printf("sample rate: %d\n", taglib_audioproperties_samplerate(properties));
 131     printf("channels   : %d\n", taglib_audioproperties_channels(properties));
 132     printf("length     : %d:%02i\n", minutes, seconds);
 133   }
 134   */
 135   //
 136   taglib_tag_free_strings();
 137   taglib_file_free(file);
 138   return res;
 139 }
 140
 141
 142 ////////////////////////////////////////////////////////////////////////////////
 143 int main (int argc, char *argv[]) {
 144   int donl = 0;
 145   for (int f = 1; f < argc; ++f) {
 146     if (show_tags(argv[f], donl) > 0) donl = 1;
 147   }
 148   //
 149   return 0;
 150 }