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//=========================================================================
// FILENAME : playlist.c
// DESCRIPTION : Playlist
//=========================================================================
// Copyright (c) 2008- NETGEAR, Inc. All Rights Reserved.
//=========================================================================
/*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "misc.h"
#include "tagutils.h"
#include "textutils.h"
#include "log.h"
#define MAX_BUF 4096
static FILE *fp = 0;
static int _utf8bom = 0;
static int _trackno;
static int (*_next_track)(struct song_metadata*, struct stat*, char*, char*);
static int _m3u_next_track(struct song_metadata*, struct stat*, char*, char*);
static int _pls_next_track(struct song_metadata*, struct stat*, char*, char*);
int
start_plist(const char *path, struct song_metadata *psong, struct stat *stat, char *lang, char *type)
{
char *fname, *suffix;
_next_track = 0;
_utf8bom = 0;
_trackno = 0;
if(strcasecmp(type, "m3u") == 0)
_next_track = _m3u_next_track;
else if(strcasecmp(type, "pls") == 0)
_next_track = _pls_next_track;
if(!_next_track)
{
DPRINTF(E_ERROR, L_SCANNER, "Unsupported playlist type <%s> (%s)\n", type, path);
return -1;
}
if(!(fp = fopen(path, "rb")))
{
DPRINTF(E_ERROR, L_SCANNER, "Cannot open %s\n", path);
return -1;
}
if(!psong)
return 0;
memset((void*)psong, 0, sizeof(struct song_metadata));
psong->is_plist = 1;
psong->path = strdup(path);
psong->type = type;
fname = strrchr(psong->path, '/');
psong->basename = fname ? fname + 1 : psong->path;
psong->title = strdup(psong->basename);
suffix = strrchr(psong->title, '.');
if(suffix) *suffix = '\0';
if(stat)
{
if(!psong->time_modified)
psong->time_modified = stat->st_mtime;
psong->file_size = stat->st_size;
}
return 0;
}
int
_m3u_next_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type)
{
char buf[MAX_BUF], *p;
int len;
//
memset((void*)psong, 0, sizeof(struct song_metadata));
// read first line, check BOM
p = fgets(buf, MAX_BUF, fp);
if(!p)
{
fclose(fp);
return 1;
}
if(!_utf8bom && p[0] == '\xef' && p[1] == '\xbb' && p[2] == '\xbf')
{
_utf8bom = 1;
p += 3;
}
while(p)
{
while(isspace(*p)) p++;
if(!isprint(*p))
{
DPRINTF(E_ERROR, L_SCANNER, "Playlist looks bad (unprintable characters)\n");
fclose(fp);
return 2;
}
if(*p && *p != '#')
{
// check dos format
len = strlen((char*)p);
while(p[len - 1] == '\r' || p[len - 1] == '\n')
{
p[--len] = '\0';
}
psong->path = strdup(p);
psong->track = ++_trackno;
return 0;
}
p = fgets(buf, MAX_BUF, fp);
continue;
}
fclose(fp);
return 1;
}
int
_pls_next_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type)
{
char buf[MAX_BUF], *p;
int len;
memset((void*)psong, 0, sizeof(struct song_metadata));
// read first line
p = fgets(buf, MAX_BUF, fp);
while(p)
{
while(isspace(*p)) p++;
if(!isprint(*p))
{
DPRINTF(E_ERROR, L_SCANNER, "Playlist looks bad (unprintable characters)\n");
fclose(fp);
return 2;
}
if(*p && *p != '#')
{
// verify that it's a valid pls playlist
if(!_trackno)
{
if(strncmp(p, "[playlist]", 10))
break;
_trackno++;
goto next_line;
}
if(strncmp(p, "File", 4))
goto next_line;
psong->track = strtol(p+4, &p, 10);
if(!psong->track || !p)
goto next_line;
_trackno = psong->track;
// check dos format
len = strlen(++p);
while(p[len - 1] == '\r' || p[len - 1] == '\n')
{
p[--len] = '\0';
}
psong->path = strdup(p);
return 0;
}
next_line:
p = fgets(buf, MAX_BUF, fp);
}
fclose(fp);
return 1;
}
int
next_plist_track(struct song_metadata *psong, struct stat *stat, char *lang, char *type)
{
if(_next_track)
return _next_track(psong, stat, lang, type);
return -1;
}