c4f22acda5
Add a cue test with mixed mode. * morituri/image/cue.py: * morituri/test/test_image_cue.py: Handle it properly.
239 lines
7.1 KiB
Python
239 lines
7.1 KiB
Python
# -*- Mode: Python; test-case-name: morituri.test.test_image_cue -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
|
|
# Morituri - for those about to RIP
|
|
|
|
# Copyright (C) 2009 Thomas Vander Stichele
|
|
|
|
# This file is part of morituri.
|
|
#
|
|
# morituri 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 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# morituri 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 morituri. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
"""
|
|
Reading .cue files
|
|
|
|
See http://digitalx.org/cuesheetsyntax.php
|
|
"""
|
|
|
|
import os
|
|
import re
|
|
|
|
_REM_RE = re.compile("^REM\s(\w+)\s(.*)$")
|
|
_PERFORMER_RE = re.compile("^PERFORMER\s(.*)$")
|
|
_TITLE_RE = re.compile("^TITLE\s(.*)$")
|
|
|
|
_FILE_RE = re.compile(r"""
|
|
^FILE # FILE
|
|
\s+"(?P<name>.*)" # 'file name' in quotes
|
|
\s+(?P<format>\w+)$ # format (WAVE/MP3/AIFF/...)
|
|
""", re.VERBOSE)
|
|
|
|
_TRACK_RE = re.compile(r"""
|
|
^\s+TRACK # TRACK
|
|
\s+(?P<track>\d\d) # two-digit track number
|
|
\s+(?P<mode>.+)$ # mode (AUDIO, MODEx/2xxx, ...)
|
|
""", re.VERBOSE)
|
|
|
|
_INDEX_RE = re.compile(r"""
|
|
^\s+INDEX # INDEX
|
|
\s+(\d\d) # two-digit index number
|
|
\s+(\d\d) # minutes
|
|
:(\d\d) # seconds
|
|
:(\d\d)$ # frames
|
|
""", re.VERBOSE)
|
|
|
|
|
|
class Cue:
|
|
def __init__(self, path):
|
|
self._path = path
|
|
self._rems = {}
|
|
self._messages = []
|
|
self.tracks = []
|
|
|
|
def parse(self):
|
|
state = 'HEADER'
|
|
currentFile = None
|
|
currentTrack = None
|
|
|
|
handle = open(self._path, 'r')
|
|
|
|
for number, line in enumerate(handle.readlines()):
|
|
line = line.rstrip()
|
|
|
|
m = _REM_RE.search(line)
|
|
if m:
|
|
tag = m.expand('\\1')
|
|
value = m.expand('\\2')
|
|
if state != 'HEADER':
|
|
self.message(number, 'REM %s outside of header' % tag)
|
|
else:
|
|
self._rems[tag] = value
|
|
continue
|
|
|
|
# look for FILE lines
|
|
m = _FILE_RE.search(line)
|
|
if m:
|
|
filePath = m.group('name')
|
|
fileFormat = m.group('format')
|
|
currentFile = File(filePath, fileFormat)
|
|
|
|
# look for TRACK lines
|
|
m = _TRACK_RE.search(line)
|
|
if m:
|
|
if not currentFile:
|
|
self.message(number, 'TRACK without preceding FILE')
|
|
continue
|
|
|
|
state = 'TRACK'
|
|
|
|
trackNumber = int(m.group('track'))
|
|
trackMode = m.group('mode')
|
|
|
|
currentTrack = Track(trackNumber)
|
|
self.tracks.append(currentTrack)
|
|
continue
|
|
|
|
# look for INDEX lines
|
|
m = _INDEX_RE.search(line)
|
|
if m:
|
|
if not currentTrack:
|
|
self.message(number, 'INDEX without preceding TRACK')
|
|
print 'ouch'
|
|
continue
|
|
|
|
indexNumber = int(m.expand('\\1'))
|
|
minutes = int(m.expand('\\2'))
|
|
seconds = int(m.expand('\\3'))
|
|
frames = int(m.expand('\\4'))
|
|
|
|
frameOffset = frames + seconds * 75 + minutes * 75 * 60
|
|
currentTrack.index(indexNumber, frameOffset, currentFile)
|
|
# print 'index %d, offset %d of track %r' % (indexNumber, frameOffset, currentTrack)
|
|
continue
|
|
|
|
def message(self, number, message):
|
|
"""
|
|
Add a message about a given line in the cue file.
|
|
|
|
@param number: line number, counting from 0.
|
|
"""
|
|
self._messages.append((number + 1, message))
|
|
|
|
def getTrackLength(self, track):
|
|
# returns track length in frames, or -1 if can't be determined and
|
|
# complete file should be assumed
|
|
# FIXME: this assumes a track can only be in one file; is this true ?
|
|
i = self.tracks.index(track)
|
|
if i == len(self.tracks) - 1:
|
|
# last track, so no length known
|
|
return -1
|
|
|
|
thisIndex = track._indexes[1] # FIXME: could be more
|
|
nextIndex = self.tracks[i + 1]._indexes[1] # FIXME: could be 0
|
|
|
|
if thisIndex[1] == nextIndex[1]: # same file
|
|
return nextIndex[0] - thisIndex[0]
|
|
|
|
# FIXME: more logic
|
|
return -1
|
|
|
|
def getRealPath(self, path):
|
|
"""
|
|
Translate the .cue's FILE to an existing path.
|
|
"""
|
|
if os.path.exists(path):
|
|
return path
|
|
|
|
# .cue FILE statements have Windows-style path separators, so convert
|
|
tpath = os.path.join(*path.split('\\'))
|
|
candidatePaths = []
|
|
|
|
# if the path is relative:
|
|
# - check relatively to the cue file
|
|
# - check only the filename part relative to the cue file
|
|
if tpath == os.path.abspath(tpath):
|
|
candidatePaths.append(tPath)
|
|
else:
|
|
candidatePaths.append(os.path.join(
|
|
os.path.dirname(self._path), tpath))
|
|
candidatePaths.append(os.path.join(
|
|
os.path.dirname(self._path), os.path.basename(tpath)))
|
|
|
|
for candidate in candidatePaths:
|
|
noext, _ = os.path.splitext(candidate)
|
|
for ext in ['wav', 'flac']:
|
|
cpath = '%s.%s' % (noext, ext)
|
|
if os.path.exists(cpath):
|
|
return cpath
|
|
|
|
raise KeyError, "Cannot find file for %s" % path
|
|
|
|
|
|
class File:
|
|
"""
|
|
I represent a FILE line in a cue file.
|
|
"""
|
|
def __init__(self, path, format):
|
|
self.path = path
|
|
self.format = format
|
|
|
|
def __repr__(self):
|
|
return '<File "%s" of format %s>' % (self.path, self.format)
|
|
|
|
|
|
# FIXME: add type ? separate AUDIO from others
|
|
class Track:
|
|
"""
|
|
I represent a track in a cue file.
|
|
I have index points.
|
|
Each index point is linked to an audio file.
|
|
|
|
@ivar number: track number
|
|
@type number: int
|
|
"""
|
|
|
|
def __init__(self, number):
|
|
if number < 1 or number > 99:
|
|
raise IndexError, "Track number must be from 1 to 99"
|
|
|
|
self.number = number
|
|
self._indexes = {} # index number -> (sector, File)
|
|
|
|
self.title = None
|
|
self.performer = None
|
|
|
|
def __repr__(self):
|
|
return '<Track %02d with %d indexes>' % (self.number,
|
|
len(self._indexes.keys()))
|
|
|
|
def index(self, number, sector, file):
|
|
"""
|
|
Add the given index to the current track.
|
|
|
|
@type file: L{File}
|
|
"""
|
|
if number in self._indexes.keys():
|
|
raise KeyError, "index %d already in track %d" % (
|
|
number, self.number)
|
|
if number < 0 or number > 99:
|
|
raise IndexError, "Index number must be from 0 to 99"
|
|
|
|
self._indexes[number] = (sector, file)
|
|
|
|
def getIndex(self, number):
|
|
"""
|
|
@rtype: tuple of (int, File)
|
|
"""
|
|
return self._indexes[number]
|