path: root/libempathy/empathy-avatar.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2006 Xavier Claessens <xclaesse@gmail.com>
 * Copyright (C) 2007 Collabora Ltd.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include "config.h"

#include "empathy-avatar.h"
#include "empathy-utils.h"
#include "empathy-debug.h"

#define DEBUG_DOMAIN "Avatar"

GType
empathy_avatar_get_type (void)
{
    static GType type_id = 0;

    if (!type_id) {
        type_id = g_boxed_type_register_static ("EmpathyAvatar",
                            (GBoxedCopyFunc) empathy_avatar_ref,
                            (GBoxedFreeFunc) empathy_avatar_unref);
    }

    return type_id;
}

static gchar *
avatar_get_filename (const gchar *token)
{
    gchar *avatar_path;
    gchar *avatar_file;
    gchar *token_escaped;

    avatar_path = g_build_filename (g_get_home_dir (),
                    ".gnome2",
                    PACKAGE_NAME,
                    "avatars",
                    NULL);
    g_mkdir_with_parents (avatar_path, 0700);

    token_escaped = empathy_escape_as_identifier (token);
    avatar_file = g_build_filename (avatar_path, token_escaped, NULL);

    g_free (token_escaped);
    g_free (avatar_path);

    return avatar_file;
}

static EmpathyAvatar *
avatar_new (guchar *data,
        gsize   len,
        gchar  *format,
        gchar  *token)
{
    EmpathyAvatar *avatar;

    avatar = g_slice_new0 (EmpathyAvatar);
    avatar->data = data;
    avatar->len = len;
    avatar->format = format;
    avatar->token = token;
    avatar->refcount = 1;

    return avatar;
}

EmpathyAvatar *
empathy_avatar_new (const guchar *data,
            const gsize   len,
            const gchar  *format,
            const gchar  *token)
{
    EmpathyAvatar *avatar;
    gchar         *filename;
    GError        *error = NULL;

    g_return_val_if_fail (data != NULL, NULL);
    g_return_val_if_fail (len > 0, NULL);
    g_return_val_if_fail (format != NULL, NULL);
    g_return_val_if_fail (!G_STR_EMPTY (token), NULL);

    avatar = avatar_new (g_memdup (data, len),
                 len,
                 g_strdup (format),
                 g_strdup (token));

    /* Save to cache if not yet in it */
    filename = avatar_get_filename (token);
    if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
        if (!g_file_set_contents (filename, data, len, &error)) {
            empathy_debug (DEBUG_DOMAIN,
                       "Failed to save avatar in cache: %s",
                       error ? error->message : "No error given");
            g_clear_error (&error);
        } else {
            empathy_debug (DEBUG_DOMAIN, "Avatar saved to %s", filename);
        }
    }
    g_free (filename);

    return avatar;
}

EmpathyAvatar *
empathy_avatar_new_from_cache (const gchar *token)
{
    EmpathyAvatar *avatar = NULL;
    gchar         *filename;
    gchar         *data = NULL;
    gsize          len;
    GError        *error = NULL;

    g_return_val_if_fail (!G_STR_EMPTY (token), NULL);

    /* Load the avatar from file if it exists */
    filename = avatar_get_filename (token);
    if (g_file_test (filename, G_FILE_TEST_EXISTS)) {
        if (!g_file_get_contents (filename, &data, &len, &error)) {
            empathy_debug (DEBUG_DOMAIN,
                       "Failed to load avatar from cache: %s",
                       error ? error->message : "No error given");
            g_clear_error (&error);
        }
    }

    if (data) {
        empathy_debug (DEBUG_DOMAIN, "Avatar loaded from %s", filename);
        avatar = avatar_new (data, len, NULL, g_strdup (token));
    }

    g_free (filename);

    return avatar;
}

void
empathy_avatar_unref (EmpathyAvatar *avatar)
{
    g_return_if_fail (avatar != NULL);

    avatar->refcount--;
    if (avatar->refcount == 0) {
        g_free (avatar->data);
        g_free (avatar->format);
        g_free (avatar->token);
        g_slice_free (EmpathyAvatar, avatar);
    }
}

EmpathyAvatar *
empathy_avatar_ref (EmpathyAvatar *avatar)
{
    g_return_val_if_fail (avatar != NULL, NULL);

    avatar->refcount++;

    return avatar;
}