#! /usr/bin/env python
# Viewer for archives packaged by archive.py
# Copyright (C) 2005, Giovanni Bajo
# Based on previous work under copyright (c) 2002 McMillan Enterprises, Inc.
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
import archive
import carchive
import sys, string, tempfile, os
try:
import zlib
except ImportError:
zlib = archive.DummyZlib()
import pprint
stack = []
cleanup = []
def main():
global stack
name = sys.argv[1]
arch = getArchive(name)
stack.append((name, arch))
show(name, arch)
while 1:
try:
toks = string.split(raw_input('? '), None, 1)
except EOFError:
# Ctrl-D
print # clear line
break
if not toks:
usage()
continue
if len(toks) == 1:
cmd = toks[0]
arg = ''
else:
cmd, arg = toks
cmd = string.upper(cmd)
if cmd == 'U':
if len(stack) > 1:
arch = stack[-1][1]
arch.lib.close()
del stack[-1]
nm, arch = stack[-1]
show(nm, arch)
elif cmd == 'O':
if not arg:
arg = raw_input('open name? ')
arg = string.strip(arg)
arch = getArchive(arg)
if arch is None:
print arg, "not found"
continue
stack.append((arg, arch))
show(arg, arch)
elif cmd == 'X':
if not arg:
arg = raw_input('extract name? ')
arg = string.strip(arg)
data = getData(arg, arch)
if data is None:
print "Not found"
continue
fnm = raw_input('to filename? ')
if not fnm:
print `data`
else:
open(fnm, 'wb').write(data)
elif cmd == 'Q':
break
else:
usage()
for (nm, arch) in stack:
arch.lib.close()
stack = []
for fnm in cleanup:
try:
os.remove(fnm)
except Exception, e:
print "couldn't delete", fnm, e.args
def usage():
print "U: go Up one level"
print "O <nm>: open embedded archive nm"
print "X <nm>: extract nm"
print "Q: quit"
def getArchive(nm):
if not stack:
if string.lower(nm[-4:]) == '.pyz':
return ZlibArchive(nm)
return carchive.CArchive(nm)
parent = stack[-1][1]
try:
return parent.openEmbedded(nm)
except KeyError, e:
return None
except (ValueError, RuntimeError):
ndx = parent.toc.find(nm)
dpos, dlen, ulen, flag, typcd, nm = parent.toc[ndx]
x, data = parent.extract(ndx)
tfnm = tempfile.mktemp()
cleanup.append(tfnm)
open(tfnm, 'wb').write(data)
if typcd == 'z':
return ZlibArchive(tfnm)
else:
return carchive.CArchive(tfnm)
def getData(nm, arch):
if type(arch.toc) is type({}):
(ispkg, pos, lngth) = arch.toc.get(nm, (0, None, 0))
if pos is None:
return None
arch.lib.seek(arch.start + pos)
return zlib.decompress(arch.lib.read(lngth))
ndx = arch.toc.find(nm)
dpos, dlen, ulen, flag, typcd, nm = arch.toc[ndx]
x, data = arch.extract(ndx)
return data
def show(nm, arch):
if type(arch.toc) == type({}):
print " Name: (ispkg, pos, len)"
toc = arch.toc
else:
print " pos, length, uncompressed, iscompressed, type, name"
toc = arch.toc.data
pprint.pprint(toc)
class ZlibArchive(archive.ZlibArchive):
def checkmagic(self):
""" Overridable.
Check to see if the file object self.lib actually has a file
we understand.
"""
self.lib.seek(self.start) #default - magic is at start of file
if self.lib.read(len(self.MAGIC)) != self.MAGIC:
raise RuntimeError, "%s is not a valid %s archive file" \
% (self.path, self.__class__.__name__)
if self.lib.read(len(self.pymagic)) != self.pymagic:
print "Warning: pyz is from a different Python version"
self.lib.read(4)
if __name__ == '__main__':
main()
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