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/*
* Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.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.
*/
/*
* Maps directory and song objects to file system paths.
*/
#include "config.h"
#include "mapper.h"
#include "directory.h"
#include "song.h"
#include "path.h"
#include <glib.h>
#include <assert.h>
#include <string.h>
static char *music_dir;
static size_t music_dir_length;
static char *playlist_dir;
/**
* Duplicate a string, chop all trailing slashes.
*/
static char *
strdup_chop_slash(const char *path_fs)
{
size_t length = strlen(path_fs);
while (length > 0 && path_fs[length - 1] == G_DIR_SEPARATOR)
--length;
return g_strndup(path_fs, length);
}
static void
check_directory(const char *path)
{
if (!g_file_test(path, G_FILE_TEST_IS_DIR))
g_warning("Not a directory: %s", path);
}
static void
mapper_set_music_dir(const char *path)
{
check_directory(path);
music_dir = strdup_chop_slash(path);
music_dir_length = strlen(music_dir);
}
static void
mapper_set_playlist_dir(const char *path)
{
check_directory(path);
playlist_dir = g_strdup(path);
}
void mapper_init(const char *_music_dir, const char *_playlist_dir)
{
if (_music_dir != NULL)
mapper_set_music_dir(_music_dir);
if (_playlist_dir != NULL)
mapper_set_playlist_dir(_playlist_dir);
}
void mapper_finish(void)
{
g_free(music_dir);
g_free(playlist_dir);
}
bool
mapper_has_music_directory(void)
{
return music_dir != NULL;
}
const char *
map_to_relative_path(const char *path_utf8)
{
return music_dir != NULL &&
memcmp(path_utf8, music_dir, music_dir_length) == 0 &&
G_IS_DIR_SEPARATOR(path_utf8[music_dir_length])
? path_utf8 + music_dir_length + 1
: path_utf8;
}
char *
map_uri_fs(const char *uri)
{
char *uri_fs, *path_fs;
assert(uri != NULL);
assert(*uri != '/');
if (music_dir == NULL)
return NULL;
uri_fs = utf8_to_fs_charset(uri);
if (uri_fs == NULL)
return NULL;
path_fs = g_build_filename(music_dir, uri_fs, NULL);
g_free(uri_fs);
return path_fs;
}
char *
map_directory_fs(const struct directory *directory)
{
assert(music_dir != NULL);
if (directory_is_root(directory))
return g_strdup(music_dir);
return map_uri_fs(directory_get_path(directory));
}
char *
map_directory_child_fs(const struct directory *directory, const char *name)
{
char *name_fs, *parent_fs, *path;
assert(music_dir != NULL);
/* check for invalid or unauthorized base names */
if (*name == 0 || strchr(name, '/') != NULL ||
strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
return NULL;
parent_fs = map_directory_fs(directory);
if (parent_fs == NULL)
return NULL;
name_fs = utf8_to_fs_charset(name);
if (name_fs == NULL) {
g_free(parent_fs);
return NULL;
}
path = g_build_filename(parent_fs, name_fs, NULL);
g_free(parent_fs);
g_free(name_fs);
return path;
}
char *
map_song_fs(const struct song *song)
{
assert(song_is_file(song));
if (song_in_database(song))
return map_directory_child_fs(song->parent, song->uri);
else
return utf8_to_fs_charset(song->uri);
}
char *
map_fs_to_utf8(const char *path_fs)
{
if (music_dir != NULL &&
strncmp(path_fs, music_dir, music_dir_length) == 0 &&
G_IS_DIR_SEPARATOR(path_fs[music_dir_length]))
/* remove musicDir prefix */
path_fs += music_dir_length + 1;
else if (G_IS_DIR_SEPARATOR(path_fs[0]))
/* not within musicDir */
return NULL;
while (path_fs[0] == G_DIR_SEPARATOR)
++path_fs;
return fs_charset_to_utf8(path_fs);
}
const char *
map_spl_path(void)
{
return playlist_dir;
}
char *
map_spl_utf8_to_fs(const char *name)
{
char *filename_utf8, *filename_fs, *path;
if (playlist_dir == NULL)
return NULL;
filename_utf8 = g_strconcat(name, PLAYLIST_FILE_SUFFIX, NULL);
filename_fs = utf8_to_fs_charset(filename_utf8);
g_free(filename_utf8);
if (filename_fs == NULL)
return NULL;
path = g_build_filename(playlist_dir, filename_fs, NULL);
g_free(filename_fs);
return path;
}
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