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track_info.c

/* 
 * Copyright 2004-2005 Timo Hirvonen
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#include "track_info.h"
#include "comment.h"
#include "uchar.h"
#include "misc.h"
#include "xmalloc.h"
#include "utils.h"
#include "debug.h"

#include <string.h>

static void track_info_free(struct track_info *ti)
{
      comments_free(ti->comments);
      free(ti);
}

struct track_info *track_info_new(const char *filename)
{
      struct track_info *ti;
      int size = strlen(filename) + 1;

      ti = xmalloc(sizeof(struct track_info) + size);
      memcpy(ti->filename, filename, size);
      ti->ref = 1;
      return ti;
}

void track_info_ref(struct track_info *ti)
{
      BUG_ON(ti->ref < 1);
      ti->ref++;
}

void track_info_unref(struct track_info *ti)
{
      BUG_ON(ti->ref < 1);
      ti->ref--;
      if (ti->ref == 0)
            track_info_free(ti);
}

int track_info_has_tag(const struct track_info *ti)
{
      return comments_get_val(ti->comments, "artist") ||
            comments_get_val(ti->comments, "album") ||
            comments_get_val(ti->comments, "title");
}

int track_info_matches(struct track_info *ti, const char *text, unsigned int flags)
{
      const char *artist = comments_get_val(ti->comments, "artist");
      const char *album = comments_get_val(ti->comments, "album");
      const char *title = comments_get_val(ti->comments, "title");
      char **words;
      int i, matched = 1;

      words = get_words(text);
      if (words[0] == NULL)
            matched = 0;
      for (i = 0; words[i]; i++) {
            const char *word = words[i];

            if ((flags & TI_MATCH_ARTIST && artist) ||
                (flags & TI_MATCH_ALBUM && album) ||
                (flags & TI_MATCH_TITLE && title)) {
                  if (flags & TI_MATCH_ARTIST && artist && u_strcasestr(artist, word))
                        continue;
                  if (flags & TI_MATCH_ALBUM && album && u_strcasestr(album, word))
                        continue;
                  if (flags & TI_MATCH_TITLE && title && u_strcasestr(title, word))
                        continue;
            } else {
                  /* compare with url or filename without path */
                  char *filename = ti->filename;

                  if (!is_url(filename)) {
                        char *slash = strrchr(ti->filename, '/');
                        if (slash)
                              filename = slash + 1;
                  }
                  if (u_strcasestr_filename(filename, word))
                        continue;
            }
            matched = 0;
            break;
      }
      free_str_array(words);
      return matched;
}

static int xstrcasecmp(const char *a, const char *b)
{
      if (a == NULL) {
            if (b == NULL)
                  return 0;
            return -1;
      } else if (b == NULL) {
            return 1;
      }
      return u_strcasecmp(a, b);
}

int track_info_cmp(const struct track_info *a, const struct track_info *b, const char * const *keys)
{
      int i, res = 0;

      for (i = 0; keys[i]; i++) {
            const char *key = keys[i];
            const char *av, *bv;

            /* numeric compare for tracknumber and discnumber */
            if (strcmp(key, "tracknumber") == 0) {
                  res = comments_get_int(a->comments, key) -
                        comments_get_int(b->comments, key);
                  if (res)
                        break;
                  continue;
            }
            if (strcmp(key, "discnumber") == 0) {
                  res = comments_get_int(a->comments, key) -
                        comments_get_int(b->comments, key);
                  if (res)
                        break;
                  continue;
            }
            if (strcmp(key, "filename") == 0) {
                  /* NOTE: filenames are not necessarily UTF-8 */
                  res = strcasecmp(a->filename, b->filename);
                  if (res)
                        break;
                  continue;
            }
            if (strcmp(key, "albumartist") == 0) {
                  av = comments_get_albumartist(a->comments);
                  bv = comments_get_albumartist(b->comments);
                  res = xstrcasecmp(av, bv);
                  if (res)
                        break;
                  continue;
            }

            av = comments_get_val(a->comments, key);
            bv = comments_get_val(b->comments, key);
            res = xstrcasecmp(av, bv);
            if (res)
                  break;
      }
      return res;
}

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