src/input/info.h

   1 /*****************************************************************************
   2  * info.h
   3  *****************************************************************************
   4  * Copyright (C) 2010 Laurent Aimar
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef LIBVLC_INPUT_INFO_H
  25 #define LIBVLC_INPUT_INFO_H 1
  26
  27 #include "vlc_input_item.h"
  28
  29 static inline info_t *info_New(const char *name, const char *value )
  30 {
  31     info_t *info = malloc(sizeof(*info));
  32     if (!info)
  33         return NULL;
  34
  35     info->psz_name = strdup(name);
  36     info->psz_value = value ? strdup(value) : NULL;
  37     return info;
  38 }
  39
  40 static inline void info_Delete(info_t *i)
  41 {
  42     free(i->psz_name);
  43     free(i->psz_value);
  44     free(i);
  45 }
  46
  47 static inline info_category_t *info_category_New(const char *name)
  48 {
  49     info_category_t *cat = malloc(sizeof(*cat));
  50     if (!cat)
  51         return NULL;
  52     cat->psz_name = strdup(name);
  53     cat->i_infos  = 0;
  54     cat->pp_infos = NULL;
  55
  56     return cat;
  57 }
  58
  59 static inline info_t *info_category_FindInfo(const info_category_t *cat,
  60                                              int *index, const char *name)
  61 {
  62     for (int i = 0; i < cat->i_infos; i++) {
  63         if (!strcmp(cat->pp_infos[i]->psz_name, name)) {
  64             if (index)
  65                 *index = i;
  66             return cat->pp_infos[i];
  67         }
  68     }
  69     return NULL;
  70 }
  71
  72 static inline void info_category_ReplaceInfo(info_category_t *cat,
  73                                              info_t *info)
  74 {
  75     int index;
  76     info_t *old = info_category_FindInfo(cat, &index, info->psz_name);
  77     if (old) {
  78         info_Delete(cat->pp_infos[index]);
  79         cat->pp_infos[index] = info;
  80     } else {
  81         INSERT_ELEM(cat->pp_infos, cat->i_infos, cat->i_infos, info);
  82     }
  83 }
  84
  85 static inline info_t *info_category_VaAddInfo(info_category_t *cat,
  86                                               const char *name,
  87                                               const char *format, va_list args)
  88 {
  89     info_t *info = info_category_FindInfo(cat, NULL, name);
  90     if (!info) {
  91         info = info_New(name, NULL);
  92         if (!info)
  93             return NULL;
  94         INSERT_ELEM(cat->pp_infos, cat->i_infos, cat->i_infos, info);
  95     } else
  96         free(info->psz_value);
  97     if (vasprintf(&info->psz_value, format, args) == -1)
  98         info->psz_value = NULL;
  99     return info;
 100 }
 101
 102 static inline info_t *info_category_AddInfo(info_category_t *cat,
 103                                             const char *name,
 104                                             const char *format, ...)
 105 {
 106     va_list args;
 107
 108     va_start(args, format);
 109     info_t *info = info_category_VaAddInfo(cat, name, format, args);
 110     va_end(args);
 111
 112     return info;
 113 }
 114
 115 static inline int info_category_DeleteInfo(info_category_t *cat, const char *name)
 116 {
 117     int index;
 118     if (info_category_FindInfo(cat, &index, name)) {
 119         info_Delete(cat->pp_infos[index]);
 120         REMOVE_ELEM(cat->pp_infos, cat->i_infos, index);
 121         return VLC_SUCCESS;
 122     }
 123     return VLC_EGENERIC;
 124 }
 125
 126 static inline void info_category_Delete(info_category_t *cat)
 127 {
 128     for (int i = 0; i < cat->i_infos; i++)
 129         info_Delete(cat->pp_infos[i]);
 130     free(cat->pp_infos);
 131     free(cat->psz_name);
 132     free(cat);
 133 }
 134
 135 #endif