def score(filename, fileobj, header):
try:
seek_end(fileobj, 160)
footer = fileobj.read()
except IOError:
return -1
return ((b"APETAGEX" in footer) - header.startswith(b"ID3"))
def score(filename, fileobj, header):
try:
seek_end(fileobj, 160)
footer = fileobj.read()
except IOError:
return -1
return ((b"APETAGEX" in footer) - header.startswith(b"ID3"))
def find_last(fileobj, serial):
"""Find the last page of the stream 'serial'.
If the file is not multiplexed this function is fast. If it is,
it must read the whole the stream.
This finds the last page in the actual file object, or the last
page in the stream (with eos set), whichever comes first.
Returns None in case no page with the serial exists.
Raises error in case this isn't a valid ogg stream.
Raises IOError.
"""
# For non-muxed streams, look at the last page.
seek_end(fileobj, 256 * 256)
data = fileobj.read()
try:
index = data.rindex(b"OggS")
except ValueError:
raise error("unable to find final Ogg header")
bytesobj = cBytesIO(data[index:])
best_page = None
try:
page = OggPage(bytesobj)
except error:
pass
else:
if page.serial == serial:
if page.last:
return page
else:
best_page = page
else:
best_page = None
# The stream is muxed, so use the slow way.
fileobj.seek(0)
try:
page = OggPage(fileobj)
while not page.last:
page = OggPage(fileobj)
while page.serial != serial:
page = OggPage(fileobj)
best_page = page
return page
except error:
return best_page
except EOFError:
return best_page
def find_last(fileobj, serial):
"""Find the last page of the stream 'serial'.
If the file is not multiplexed this function is fast. If it is,
it must read the whole the stream.
This finds the last page in the actual file object, or the last
page in the stream (with eos set), whichever comes first.
Returns None in case no page with the serial exists.
Raises error in case this isn't a valid ogg stream.
Raises IOError.
"""
# For non-muxed streams, look at the last page.
seek_end(fileobj, 256 * 256)
data = fileobj.read()
try:
index = data.rindex(b"OggS")
except ValueError:
raise error("unable to find final Ogg header")
bytesobj = cBytesIO(data[index:])
best_page = None
try:
page = OggPage(bytesobj)
except error:
pass
else:
if page.serial == serial:
if page.last:
return page
else:
best_page = page
else:
best_page = None
# The stream is muxed, so use the slow way.
fileobj.seek(0)
try:
page = OggPage(fileobj)
while not page.last:
page = OggPage(fileobj)
while page.serial != serial:
page = OggPage(fileobj)
best_page = page
return page
except error:
return best_page
except EOFError:
return best_page
def test_seek_end(self):
with self.file(b"foo") as f:
seek_end(f, 2)
self.assertEqual(f.tell(), 1)
seek_end(f, 3)
self.assertEqual(f.tell(), 0)
seek_end(f, 4)
self.assertEqual(f.tell(), 0)
seek_end(f, 0)
self.assertEqual(f.tell(), 3)
self.assertRaises(ValueError, seek_end, f, -1)
def test_seek_end(self):
f = cBytesIO(b"foo")
seek_end(f, 2)
self.assertEqual(f.tell(), 1)
seek_end(f, 3)
self.assertEqual(f.tell(), 0)
seek_end(f, 4)
self.assertEqual(f.tell(), 0)
seek_end(f, 0)
self.assertEqual(f.tell(), 3)
self.assertRaises(ValueError, seek_end, f, -1)
def test_seek_end(self):
with self.file(b"foo") as f:
seek_end(f, 2)
self.assertEqual(f.tell(), 1)
seek_end(f, 3)
self.assertEqual(f.tell(), 0)
seek_end(f, 4)
self.assertEqual(f.tell(), 0)
seek_end(f, 0)
self.assertEqual(f.tell(), 3)
self.assertRaises(ValueError, seek_end, f, -1)
def find_last(fileobj, serial, finishing=False):
"""Find the last page of the stream 'serial'.
If the file is not multiplexed this function is fast. If it is,
it must read the whole the stream.
This finds the last page in the actual file object, or the last
page in the stream (with eos set), whichever comes first.
If finishing is True it returns the last page which contains a packet
finishing on it. If there exist pages but none with finishing packets
returns None.
Returns None in case no page with the serial exists.
Raises error in case this isn't a valid ogg stream.
Raises IOError.
"""
# For non-muxed streams, look at the last page.
seek_end(fileobj, 256 * 256)
data = fileobj.read()
try:
index = data.rindex(b"OggS")
except ValueError:
raise error("unable to find final Ogg header")
bytesobj = cBytesIO(data[index:])
def is_valid(page):
return not finishing or page.position != -1
best_page = None
try:
page = OggPage(bytesobj)
except error:
pass
else:
if page.serial == serial and is_valid(page):
if page.last:
return page
else:
best_page = page
else:
best_page = None
# The stream is muxed, so use the slow way.
fileobj.seek(0)
try:
page = OggPage(fileobj)
while True:
if page.serial == serial:
if is_valid(page):
best_page = page
if page.last:
break
page = OggPage(fileobj)
return best_page
except error:
return best_page
except EOFError:
return best_page
def test_seek_end_pos(self):
with self.file(b"foo") as f:
f.seek(10)
seek_end(f, 10)
self.assertEqual(f.tell(), 0)
def find_last(fileobj, serial, finishing=False):
"""Find the last page of the stream 'serial'.
If the file is not multiplexed this function is fast. If it is,
it must read the whole the stream.
This finds the last page in the actual file object, or the last
page in the stream (with eos set), whichever comes first.
If finishing is True it returns the last page which contains a packet
finishing on it. If there exist pages but none with finishing packets
returns None.
Returns None in case no page with the serial exists.
Raises error in case this isn't a valid ogg stream.
Raises IOError.
"""
# For non-muxed streams, look at the last page.
seek_end(fileobj, 256 * 256)
data = fileobj.read()
try:
index = data.rindex(b"OggS")
except ValueError:
raise error("unable to find final Ogg header")
bytesobj = cBytesIO(data[index:])
def is_valid(page):
return not finishing or page.position != -1
best_page = None
try:
page = OggPage(bytesobj)
except error:
pass
else:
if page.serial == serial and is_valid(page):
if page.last:
return page
else:
best_page = page
else:
best_page = None
# The stream is muxed, so use the slow way.
fileobj.seek(0)
try:
page = OggPage(fileobj)
while True:
if page.serial == serial:
if is_valid(page):
best_page = page
if page.last:
break
page = OggPage(fileobj)
return best_page
except error:
return best_page
except EOFError:
return best_page
def test_seek_end_pos(self):
with self.file(b"foo") as f:
f.seek(10)
seek_end(f, 10)
self.assertEqual(f.tell(), 0)
