[SCM] morituri/master: * examples/readtoc.py: Read the toc using cdrdao. Now sets progress based on which frame it is on.
js at users.alioth.debian.org
js at users.alioth.debian.org
Sun Oct 19 20:08:48 UTC 2014
The following commit has been merged in the master branch:
commit 58a855c63088eb3c46c4e4e2790a16e181b66597
Author: Thomas Vander Stichele <thomas (at) apestaart (dot) org>
Date: Sun Apr 19 22:55:16 2009 +0000
* examples/readtoc.py:
Read the toc using cdrdao. Now sets progress based on which
frame it is on.
diff --git a/ChangeLog b/ChangeLog
index 47ca9b8..dfd1a01 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
2009-04-20 Thomas Vander Stichele <thomas at apestaart dot org>
+ * examples/readtoc.py:
+ Read the toc using cdrdao. Now sets progress based on which
+ frame it is on.
+
+2009-04-20 Thomas Vander Stichele <thomas at apestaart dot org>
+
* morituri/common/task.py:
Add a __main__ example using DummyTask.
diff --git a/examples/readtoc.py b/examples/readtoc.py
index 115fc71..d9f775c 100644
--- a/examples/readtoc.py
+++ b/examples/readtoc.py
@@ -1,12 +1,35 @@
# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
+import re
import os
import subprocess
from morituri.common import task
from morituri.extern import asyncsub
+states = ['START', 'TRACK', 'LEADOUT', 'DONE']
+
+_ANALYZING_RE = re.compile(r'^Analyzing track (\d+).*')
+_TRACK_RE = re.compile(r"""
+ ^(?P<track>[\d\s]{2})\s+ # Track
+ \w+\s+ # Mode
+ \d\s+ # Flags
+ \d\d:\d\d:\d\d # Start in HH:MM:FF
+ \((?P<start>.+)\)\s+ # Start in frames
+ \d\d:\d\d:\d\d # Length in HH:MM:FF
+ \(.+\) # Length in frames
+""", re.VERBOSE)
+_LEADOUT_RE = re.compile(r"""
+ ^Leadout\s
+ \w+\s+ # Mode
+ \d\s+ # Flags
+ \d\d:\d\d:\d\d # Start in HH:MM:FF
+ \((?P<start>.+)\) # Start in frames
+""", re.VERBOSE)
+
+# FIXME: handle errors
+
class ReadTOCTask(task.Task):
"""
I am a task that reads the TOC of a CD, including pregaps.
@@ -14,9 +37,20 @@ class ReadTOCTask(task.Task):
description = "Reading TOC..."
+
+ def __init__(self):
+ self._buffer = "" # accumulate characters
+ self._lines = [] # accumulate lines
+ self._lineIndex = 0 # where we are
+ self._state = 'START'
+ self._frames = None # number of frames
+ self._starts = [] # start of each track, in frames
+ self._track = None # which track are we analyzing?
+
def start(self, runner):
task.Task.start(self, runner)
+ # FIXME: create a temporary file instead
if os.path.exists('/tmp/toc'):
os.unlink('/tmp/toc')
@@ -29,9 +63,81 @@ class ReadTOCTask(task.Task):
self.runner.schedule(1.0, self._read, runner)
def _read(self, runner):
- print self._popen.recv_err()
+ ret = self._popen.recv_err()
+ if not ret:
+ # FIXME: handle done
+ self.setProgress(1.0)
+ print
+ print 'done'
+ self.stop()
+ return
+
+ self._buffer += ret
+
+ # find counter in LEADOUT state
+ if self._buffer and self._state == 'LEADOUT':
+ times = self._buffer.split('\r')
+ position = ""
+ while len(position) != 8:
+ position = times.pop()
+
+ frame = self._starts[self._track - 1] \
+ + int(position[0:2]) * 60 * 75 \
+ + int(position[3:5]) * 75 \
+ + int(position[6:8])
+ self.setProgress(float(frame) / self._frames)
+
+ if "\n" in self._buffer:
+ lines = self._buffer.split('\n')
+ if lines[-1] != "\n":
+ # last line didn't end yet
+ self._buffer = lines[-1]
+ del lines[-1]
+ else:
+ self._buffer = ""
+ self._parse(lines)
+ self._lines.extend(lines)
+
self.runner.schedule(1.0, self._read, runner)
+ def _parse(self, lines):
+ for line in lines:
+ #print 'parsing', len(line), line
+ methodName = "_parse_" + self._state
+ getattr(self, methodName)(line)
+
+ def _parse_START(self, line):
+ if line == "Track Mode Flags Start Length":
+ #print 'Found track line'
+ self._state = 'TRACK'
+
+ def _parse_TRACK(self, line):
+ if line.startswith('---'):
+ return
+
+ m = _TRACK_RE.search(line)
+ if m:
+ self._tracks = int(m.group('track'))
+ self._starts.append(int(m.group('start')))
+
+ m = _LEADOUT_RE.search(line)
+ if m:
+ self._state = 'LEADOUT'
+ self._frames = int(m.group('start'))
+ return
+
+ self._tracks = int(line[:2])
+ #print '%d tracks found' % self._tracks
+
+ def _parse_LEADOUT(self, line):
+ m = _ANALYZING_RE.search(line)
+ if m:
+ track = int(m.expand('\\1'))
+ self.description = 'Analyzing track %d...' % track
+ self._track = track
+ #self.setProgress(float(track - 1) / self._tracks)
+ #print 'analyzing', track
+
def main():
runner = task.SyncRunner()
--
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