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Python playlist parser
# code excerpt from exaile music player
import httplib, os, re, sys, threading, time, traceback, urllib, urlparse
from gettext import gettext as _
class PlaylistParser(object):
def __init__(self, name, url=None):
self.name = name
self.url = []
self.parse_file(url)
def add_url(self, url, title=None, album=''):
if not title: title=url
try:
url = list(urlparse.urlsplit(url))
except:
pass
if not url[0]:
url[0] = 'file'
item = {
'url': url,
'title': title,
'album': album
}
self.url.append(item)
def get_urls(self):
return self.url
def get_full(self):
return [urlparse.urlunsplit(u) for u in self.url]
def get_name(self):
return self.name
def parse_file(self, url):
f = urllib.urlopen(url)
try:
return self._do_parse_file(f)
finally:
try:
f.close()
except:
pass
def _do_parse_file(self, file):
raise NotImplementedError
def _get_url_from_path(self, basedir, s):
if not urlparse.urlsplit(s)[0]: # no scheme --> local path
if not os.path.isabs(s): # relative path
s = os.path.join(basedir, s)
s = 'file://' + urllib.quote(s)
return s
class M3UParser(PlaylistParser):
REGEX = re.compile(r'#EXTINF:\d+,(.*?)[\r\n]+(.*?)[\r\n]+', re.DOTALL)
def _do_parse_file(self, file):
# Read first line to see if this is extended M3U.
firstline = file.readline()
if firstline.strip() == "#EXTM3U":
return self._do_parse_extended(file)
basedir = os.path.dirname(file.url)
for line in [firstline] + file.readlines():
line = line.strip()
if line and line[0] == "#":
url = self._get_url_from_path(basedir, line)
self.add_url(url)
return True
def _do_parse_extended(self, file):
data = file.read()
items = self.REGEX.findall(data)
if items:
basedir = os.path.dirname(file.url)
for item in items:
url = self._get_url_from_path(basedir, item[1])
self.add_url(url, title=item[0], album=url)
return True
class PlsParser(PlaylistParser):
REGEX = re.compile(r'[fF]ile(\d+)=(.*?)\n[tT]itle(\1)=(.*?)\n', re.DOTALL)
def _do_parse_file(self, file):
data = file.read()
items = self.REGEX.findall(data)
if items:
basedir = os.path.dirname(file.url)
for item in items:
url = self._get_url_from_path(basedir, item[1])
self.add_url(url, title=url, album=item[3])
return True
class ASXParser(PlaylistParser):
REGEX = re.compile(r'''
Tags:
file,
functions,
mp3,
python
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