info.h

Go to the documentation of this file.

/*****************************************************************************
 * info.h
 *****************************************************************************
 * Copyright (C) 2010 Laurent Aimar
 * $Id: 2beaafe87d27f0b0a546eeda3c2683d600b55b9a $
 *
 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#if defined(__PLUGIN__) || defined(__BUILTIN__) || !defined(__LIBVLC__)
# error This header file can only be included from LibVLC.
#endif

#ifndef _INPUT_INFO_H
#define _INPUT_INFO_H 1

#include "vlc_input_item.h"

static inline info_t *info_New(const char *name, const char *value )
{
    info_t *info = malloc(sizeof(*info));
    if (!info)
        return NULL;

    info->psz_name = strdup(name);
    info->psz_value = value ? strdup(value) : NULL;
    return info;
}

static inline void info_Delete(info_t *i)
{
    free(i->psz_name);
    free(i->psz_value);
    free(i);
}

static inline info_category_t *info_category_New(const char *name)
{
    info_category_t *cat = malloc(sizeof(*cat));
    if (!cat)
        return NULL;
    cat->psz_name = strdup(name);
    cat->i_infos  = 0;
    cat->pp_infos = NULL;

    return cat;
}

static inline info_t *info_category_FindInfo(const info_category_t *cat,
                                             int *index, const char *name)
{
    for (int i = 0; i < cat->i_infos; i++) {
        if (!strcmp(cat->pp_infos[i]->psz_name, name)) {
            if (index)
                *index = i;
            return cat->pp_infos[i];
        }
    }
    return NULL;
}

static inline void info_category_ReplaceInfo(info_category_t *cat,
                                             info_t *info)
{
    int index;
    info_t *old = info_category_FindInfo(cat, &index, info->psz_name);
    if (old) {
        info_Delete(cat->pp_infos[index]);
        cat->pp_infos[index] = info;
    } else {
        INSERT_ELEM(cat->pp_infos, cat->i_infos, cat->i_infos, info);
    }
}

static inline info_t *info_category_VaAddInfo(info_category_t *cat,
                                              const char *name,
                                              const char *format, va_list args)
{
    info_t *info = info_category_FindInfo(cat, NULL, name);
    if (!info) {
        info = info_New(name, NULL);
        if (!info)
            return NULL;
        INSERT_ELEM(cat->pp_infos, cat->i_infos, cat->i_infos, info);
    } else {
        free(info->psz_value);
    }
    if (vasprintf(&info->psz_value, format, args) == -1)
        info->psz_value = NULL;
    return info;
}

static inline info_t *info_category_AddInfo(info_category_t *cat,
                                            const char *name,
                                            const char *format, ...)
{
    va_list args;

    va_start(args, format);
    info_t *info = info_category_VaAddInfo(cat, name, format, args);
    va_end(args);

    return info;
}

static inline int info_category_DeleteInfo(info_category_t *cat, const char *name)
{
    int index;
    if (info_category_FindInfo(cat, &index, name)) {
        info_Delete(cat->pp_infos[index]);
        REMOVE_ELEM(cat->pp_infos, cat->i_infos, index);
        return VLC_SUCCESS;
    }
    return VLC_EGENERIC;
}

static inline void info_category_Delete(info_category_t *cat)
{
    for (int i = 0; i < cat->i_infos; i++)
        info_Delete(cat->pp_infos[i]);
    free(cat->pp_infos);
    free(cat->psz_name);
    free(cat);
}

#endif