def generate_signature(fp, updatefunc):
fp.seek(0)
# Magic
updatefunc(fp.read(4))
# index_offset
updatefunc(fp.read(4))
# file size
updatefunc(fp.read(8))
# number of signatures
num_sigs = fp.read(4)
updatefunc(num_sigs)
num_sigs = unpackint(num_sigs)
for i in range(num_sigs):
# signature algo
updatefunc(fp.read(4))
# signature size
sigsize = fp.read(4)
updatefunc(sigsize)
sigsize = unpackint(sigsize)
# Read this, but don't update the signature with it
fp.read(sigsize)
# Read the rest of the file
for block in read_file(fp):
updatefunc(block)
def add(self, path, name=None, fileobj=None, mode=None):
"""Adds `path` compressed with BZ2 to this MAR file.
If `name` is set, the file is named with `name` in the MAR, otherwise
use the normalized version of `path`.
If `fileobj` is set, file data is read from it, otherwise the file
located at `path` will be opened and read.
If `flags` is set, it will be used as the permission flags in the MAR,
otherwise the permissions of `path` will be used.
"""
if self.mode != "w":
raise ValueError("File not opened for writing")
if os.path.isdir(path):
self.add_dir(path)
return
info = MarInfo()
info.name = name or os.path.normpath(path)
info.size = 0
if not fileobj:
info.flags = os.stat(path).st_mode & 0o777
else:
info.flags = mode
info._offset = self.index_offset
if not fileobj:
f = open(path, 'rb')
else:
f = fileobj
comp = bz2.BZ2Compressor(9)
self.fileobj.seek(self.index_offset)
for block in read_file(f, 512 * 1024):
block = comp.compress(block)
info.size += len(block)
self.fileobj.write(block)
block = comp.flush()
info.size += len(block)
self.fileobj.write(block)
self.index_offset += info.size
self.rewrite_index = True
self.members.append(info)
def add(self, path, name=None, fileobj=None, mode=None):
"""Adds `path` compressed with BZ2 to this MAR file.
If `name` is set, the file is named with `name` in the MAR, otherwise
use the normalized version of `path`.
If `fileobj` is set, file data is read from it, otherwise the file
located at `path` will be opened and read.
If `flags` is set, it will be used as the permission flags in the MAR,
otherwise the permissions of `path` will be used.
"""
if self.mode != "w":
raise ValueError("File not opened for writing")
if os.path.isdir(path):
self.add_dir(path)
return
info = MarInfo()
info.name = name or os.path.normpath(path)
info.size = 0
if not fileobj:
info.flags = os.stat(path).st_mode & 0o777
else:
info.flags = mode
info._offset = self.index_offset
if not fileobj:
f = open(path, 'rb')
else:
f = fileobj
comp = bz2.BZ2Compressor(9)
self.fileobj.seek(self.index_offset)
for block in read_file(f, 512 * 1024):
block = comp.compress(block)
info.size += len(block)
self.fileobj.write(block)
block = comp.flush()
info.size += len(block)
self.fileobj.write(block)
self.index_offset += info.size
self.rewrite_index = True
self.members.append(info)
def add(self, path, name=None, fileobj=None, flags=None):
"""Adds `path` to this MAR file.
If `name` is set, the file is named with `name` in the MAR, otherwise
use the normalized version of `path`.
If `fileobj` is set, file data is read from it, otherwise the file
located at `path` will be opened and read.
If `flags` is set, it will be used as the permission flags in the MAR,
otherwise the permissions of `path` will be used.
"""
if self.mode != "w":
raise ValueError("File not opened for writing")
# If path refers to a directory, add all the files inside of it
if os.path.isdir(path):
self.add_dir(path)
return
info = MarInfo()
info._offset = self.index_offset
info.size = 0
if not fileobj:
fileobj = open(path, 'rb')
info.flags = flags or os.stat(path).st_mode & 0o777
info.name = name or os.path.normpath(path)
else:
assert flags
info.flags = flags
info.name = name or path
self.fileobj.seek(self.index_offset)
for block in read_file(fileobj):
self.fileobj.write(block)
info.size += len(block)
# Shift our index, and mark that we have to re-write it on close
self.index_offset += info.size
self.rewrite_index = True
self.members.append(info)
def add(self, path, name=None, fileobj=None, flags=None):
"""Adds `path` to this MAR file.
If `name` is set, the file is named with `name` in the MAR, otherwise
use the normalized version of `path`.
If `fileobj` is set, file data is read from it, otherwise the file
located at `path` will be opened and read.
If `flags` is set, it will be used as the permission flags in the MAR,
otherwise the permissions of `path` will be used.
"""
if self.mode != "w":
raise ValueError("File not opened for writing")
# If path refers to a directory, add all the files inside of it
if os.path.isdir(path):
self.add_dir(path)
return
info = MarInfo()
info._offset = self.index_offset
info.size = 0
if not fileobj:
fileobj = open(path, 'rb')
info.flags = flags or os.stat(path).st_mode & 0o777
info.name = name or os.path.normpath(path)
else:
assert flags
info.flags = flags
info.name = name or path
self.fileobj.seek(self.index_offset)
for block in read_file(fileobj):
self.fileobj.write(block)
info.size += len(block)
# Shift our index, and mark that we have to re-write it on close
self.index_offset += info.size
self.rewrite_index = True
self.members.append(info)
def test_read_file():
data = []
for block in read_file(open(__file__, 'rb')):
data.append(block)
assert b''.join(data) == open(__file__, 'rb').read()
def test_read_file():
data = []
for block in read_file(open(__file__, 'rb')):
data.append(block)
assert b''.join(data) == open(__file__, 'rb').read()