comment.c

   1 /*
   2  * Copyright 2004 Timo Hirvonen
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * 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, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17  * 02111-1307, USA.
  18  */
  19
  20 #include "comment.h"
  21 #include "xmalloc.h"
  22 #include "utils.h"
  23
  24 #include <string.h>
  25
  26 struct keyval *comments_dup(const struct keyval *comments)
  27 {
  28         struct keyval *c;
  29         int i;
  30
  31         for (i = 0; comments[i].key; i++)
  32                 ; /* nothing */
  33         c = xnew(struct keyval, i + 1);
  34         for (i = 0; comments[i].key; i++) {
  35                 c[i].key = xstrdup(comments[i].key);
  36                 c[i].val = xstrdup(comments[i].val);
  37         }
  38         c[i].key = NULL;
  39         c[i].val = NULL;
  40         return c;
  41 }
  42
  43 void comments_free(struct keyval *comments)
  44 {
  45         int i;
  46
  47         for (i = 0; comments[i].key; i++) {
  48                 free(comments[i].key);
  49                 free(comments[i].val);
  50         }
  51         free(comments);
  52 }
  53
  54 const char *comments_get_val(const struct keyval *comments, const char *key)
  55 {
  56         int i;
  57
  58         for (i = 0; comments[i].key; i++) {
  59                 if (strcasecmp(comments[i].key, key) == 0)
  60                         return comments[i].val;
  61         }
  62         return NULL;
  63 }
  64
  65 int comments_get_int(const struct keyval *comments, const char *key)
  66 {
  67         const char *val;
  68         long int ival;
  69
  70         val = comments_get_val(comments, key);
  71         if (val == NULL)
  72                 return -1;
  73         if (str_to_int(val, &ival) == -1)
  74                 return -1;
  75         return ival;
  76 }
  77
  78 /* Return date as an integer in the form YYYYMMDD, for sorting purposes.
  79  * This function is not year 10000 compliant. */
  80 int comments_get_date(const struct keyval *comments, const char *key)
  81 {
  82         const char *val;
  83         char *endptr;
  84         int year, month, day;
  85         long int ival;
  86
  87         val = comments_get_val(comments, key);
  88         if (val == NULL)
  89                 return -1;
  90
  91         year = strtol(val, &endptr, 10);
  92         /* Looking for a four-digit number */
  93         if (year < 1000 || year > 9999)
  94                 return -1;
  95         ival = year * 10000;
  96
  97         if (*endptr == '-' || *endptr == ' ' || *endptr == '/') {
  98                 month = strtol(endptr+1, &endptr, 10);
  99                 if (month < 1 || month > 12)
 100                         return ival;
 101                 ival += month * 100;
 102         }
 103
 104         if (*endptr == '-' || *endptr == ' ' || *endptr == '/') {
 105                 day = strtol(endptr+1, &endptr, 10);
 106                 if (day < 1 || day > 31)
 107                         return ival;
 108                 ival += day;
 109         }
 110
 111
 112         return ival;
 113 }
 114
 115 static const char *interesting[] = {
 116         "artist", "album", "title", "tracknumber", "discnumber", "genre",
 117         "date", "compilation", "albumartist",
 118         "replaygain_track_gain",
 119         "replaygain_track_peak",
 120         "replaygain_album_gain",
 121         "replaygain_album_peak",
 122         NULL
 123 };
 124
 125 int is_interesting_key(const char *key)
 126 {
 127         int i;
 128
 129         for (i = 0; interesting[i]; i++) {
 130                 if (strcasecmp(key, interesting[i]) == 0)
 131                         return 1;
 132         }
 133         return 0;
 134 }
 135
 136 void fix_track_or_disc(char *str)
 137 {
 138         char *slash = strchr(str, '/');
 139
 140         if (slash)
 141                 *slash = 0;
 142 }