Personal Computer World 2009 February/PCWFEB09.iso/Software/Linux/Kubuntu 8.10/kubuntu-8.10-desktop-i386.iso/casper/filesystem.squashfs/usr/lib/python2.5/zipfile.pyc

Python Compiled Bytecode | 2008-10-29 | 26KB | 858 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.5)

'''
Read and write ZIP files.
'''
import struct
import os
import time
import sys
import binascii
import cStringIO

try:
    import zlib
except ImportError:
    zlib = None

__all__ = [
    'BadZipfile',
    'error',
    'ZIP_STORED',
    'ZIP_DEFLATED',
    'is_zipfile',
    'ZipInfo',
    'ZipFile',
    'PyZipFile',
    'LargeZipFile']

class BadZipfile(Exception):
    pass


class LargeZipFile(Exception):
    '''
    Raised when writing a zipfile, the zipfile requires ZIP64 extensions
    and those extensions are disabled.
    '''
    pass

error = BadZipfile
ZIP64_LIMIT = (1 << 31) - 1
ZIP_STORED = 0
ZIP_DEFLATED = 8
structEndArchive = '<4s4H2LH'
stringEndArchive = 'PK\x05\x06'
structCentralDir = '<4s4B4HlLL5HLL'
stringCentralDir = 'PK\x01\x02'
structFileHeader = '<4s2B4HlLL2H'
stringFileHeader = 'PK\x03\x04'
structEndArchive64Locator = '<4slql'
stringEndArchive64Locator = 'PK\x06\x07'
structEndArchive64 = '<4sqhhllqqqq'
stringEndArchive64 = 'PK\x06\x06'
_CD_SIGNATURE = 0
_CD_CREATE_VERSION = 1
_CD_CREATE_SYSTEM = 2
_CD_EXTRACT_VERSION = 3
_CD_EXTRACT_SYSTEM = 4
_CD_FLAG_BITS = 5
_CD_COMPRESS_TYPE = 6
_CD_TIME = 7
_CD_DATE = 8
_CD_CRC = 9
_CD_COMPRESSED_SIZE = 10
_CD_UNCOMPRESSED_SIZE = 11
_CD_FILENAME_LENGTH = 12
_CD_EXTRA_FIELD_LENGTH = 13
_CD_COMMENT_LENGTH = 14
_CD_DISK_NUMBER_START = 15
_CD_INTERNAL_FILE_ATTRIBUTES = 16
_CD_EXTERNAL_FILE_ATTRIBUTES = 17
_CD_LOCAL_HEADER_OFFSET = 18
_FH_SIGNATURE = 0
_FH_EXTRACT_VERSION = 1
_FH_EXTRACT_SYSTEM = 2
_FH_GENERAL_PURPOSE_FLAG_BITS = 3
_FH_COMPRESSION_METHOD = 4
_FH_LAST_MOD_TIME = 5
_FH_LAST_MOD_DATE = 6
_FH_CRC = 7
_FH_COMPRESSED_SIZE = 8
_FH_UNCOMPRESSED_SIZE = 9
_FH_FILENAME_LENGTH = 10
_FH_EXTRA_FIELD_LENGTH = 11

def is_zipfile(filename):
    '''Quickly see if file is a ZIP file by checking the magic number.'''

    try:
        fpin = open(filename, 'rb')
        endrec = _EndRecData(fpin)
        fpin.close()
        if endrec:
            return True
    except IOError:
        pass

    return False


def _EndRecData64(fpin, offset, endrec):
    '''
    Read the ZIP64 end-of-archive records and use that to update endrec
    '''
    locatorSize = struct.calcsize(structEndArchive64Locator)
    fpin.seek(offset - locatorSize, 2)
    data = fpin.read(locatorSize)
    (sig, diskno, reloff, disks) = struct.unpack(structEndArchive64Locator, data)
    if sig != stringEndArchive64Locator:
        return endrec

    if diskno != 0 or disks != 1:
        raise BadZipfile('zipfiles that span multiple disks are not supported')

    endArchiveSize = struct.calcsize(structEndArchive64)
    fpin.seek(offset - locatorSize - endArchiveSize, 2)
    data = fpin.read(endArchiveSize)
    (sig, sz, create_version, read_version, disk_num, disk_dir, dircount, dircount2, dirsize, diroffset) = struct.unpack(structEndArchive64, data)
    if sig != stringEndArchive64:
        return endrec

    endrec[1] = disk_num
    endrec[2] = disk_dir
    endrec[3] = dircount
    endrec[4] = dircount2
    endrec[5] = dirsize
    endrec[6] = diroffset
    return endrec


def _EndRecData(fpin):
    '''Return data from the "End of Central Directory" record, or None.

    The data is a list of the nine items in the ZIP "End of central dir"
    record followed by a tenth item, the file seek offset of this record.'''
    fpin.seek(-22, 2)
    filesize = fpin.tell() + 22
    data = fpin.read()
    if data[0:4] == stringEndArchive and data[-2:] == '\x00\x00':
        endrec = struct.unpack(structEndArchive, data)
        endrec = list(endrec)
        endrec.append('')
        endrec.append(filesize - 22)
        if endrec[-4] == -1 or endrec[-4] == 0xFFFFFFFFL:
            return _EndRecData64(fpin, -22, endrec)

        return endrec

    END_BLOCK = min(filesize, 4096)
    fpin.seek(filesize - END_BLOCK, 0)
    data = fpin.read()
    start = data.rfind(stringEndArchive)
    if start >= 0:
        endrec = struct.unpack(structEndArchive, data[start:start + 22])
        endrec = list(endrec)
        comment = data[start + 22:]
        if endrec[7] == len(comment):
            endrec.append(comment)
            endrec.append((filesize - END_BLOCK) + start)
            if endrec[-4] == -1 or endrec[-4] == 0xFFFFFFFFL:
                return _EndRecData64(fpin, -END_BLOCK + start, endrec)

            return endrec




class ZipInfo(object):
    '''Class with attributes describing each file in the ZIP archive.'''
    __slots__ = ('orig_filename', 'filename', 'date_time', 'compress_type', 'comment', 'extra', 'create_system', 'create_version', 'extract_version', 'reserved', 'flag_bits', 'volume', 'internal_attr', 'external_attr', 'header_offset', 'CRC', 'compress_size', 'file_size')

    def __init__(self, filename = 'NoName', date_time = (1980, 1, 1, 0, 0, 0)):
        self.orig_filename = filename
        null_byte = filename.find(chr(0))
        if null_byte >= 0:
            filename = filename[0:null_byte]

        if os.sep != '/' and os.sep in filename:
            filename = filename.replace(os.sep, '/')

        self.filename = filename
        self.date_time = date_time
        self.compress_type = ZIP_STORED
        self.comment = ''
        self.extra = ''
        if sys.platform == 'win32':
            self.create_system = 0
        else:
            self.create_system = 3
        self.create_version = 20
        self.extract_version = 20
        self.reserved = 0
        self.flag_bits = 0
        self.volume = 0
        self.internal_attr = 0
        self.external_attr = 0


    def FileHeader(self):
        '''Return the per-file header as a string.'''
        dt = self.date_time
        dosdate = dt[0] - 1980 << 9 | dt[1] << 5 | dt[2]
        dostime = dt[3] << 11 | dt[4] << 5 | dt[5] // 2
        if self.flag_bits & 8:
            CRC = compress_size = file_size = 0
        else:
            CRC = self.CRC
            compress_size = self.compress_size
            file_size = self.file_size
        extra = self.extra
        if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
            fmt = '<hhqq'
            extra = extra + struct.pack(fmt, 1, struct.calcsize(fmt) - 4, file_size, compress_size)
            file_size = 0xFFFFFFFFL
            compress_size = 0xFFFFFFFFL
            self.extract_version = max(45, self.extract_version)
            self.create_version = max(45, self.extract_version)

        header = struct.pack(structFileHeader, stringFileHeader, self.extract_version, self.reserved, self.flag_bits, self.compress_type, dostime, dosdate, CRC, compress_size, file_size, len(self.filename), len(extra))
        return header + self.filename + extra


    def _decodeExtra(self):
        extra = self.extra
        unpack = struct.unpack
        while extra:
            (tp, ln) = unpack('<hh', extra[:4])
            if tp == 1:
                if ln >= 24:
                    counts = unpack('<qqq', extra[4:28])
                elif ln == 16:
                    counts = unpack('<qq', extra[4:20])
                elif ln == 8:
                    counts = unpack('<q', extra[4:12])
                elif ln == 0:
                    counts = ()
                else:
                    raise RuntimeError, 'Corrupt extra field %s' % (ln,)
                idx = 0
                if self.file_size == -1 or self.file_size == 0xFFFFFFFFL:
                    self.file_size = counts[idx]
                    idx += 1

                if self.compress_size == -1 or self.compress_size == 0xFFFFFFFFL:
                    self.compress_size = counts[idx]
                    idx += 1

                if self.header_offset == -1 or self.header_offset == 0xFFFFFFFFL:
                    old = self.header_offset
                    self.header_offset = counts[idx]
                    idx += 1


            extra = extra[ln + 4:]



class ZipFile:
    ''' Class with methods to open, read, write, close, list zip files.

    z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=True)

    file: Either the path to the file, or a file-like object.
          If it is a path, the file will be opened and closed by ZipFile.
    mode: The mode can be either read "r", write "w" or append "a".
    compression: ZIP_STORED (no compression) or ZIP_DEFLATED (requires zlib).
    allowZip64: if True ZipFile will create files with ZIP64 extensions when
                needed, otherwise it will raise an exception when this would
                be necessary.

    '''
    fp = None

    def __init__(self, file, mode = 'r', compression = ZIP_STORED, allowZip64 = False):
        '''Open the ZIP file with mode read "r", write "w" or append "a".'''
        self._allowZip64 = allowZip64
        self._didModify = False
        if compression == ZIP_STORED:
            pass
        elif compression == ZIP_DEFLATED:
            if not zlib:
                raise RuntimeError, 'Compression requires the (missing) zlib module'

        else:
            raise RuntimeError, 'That compression method is not supported'
        self.debug = 0
        self.NameToInfo = { }
        self.filelist = []
        self.compression = compression
        self.mode = key = mode.replace('b', '')[0]
        if isinstance(file, basestring):
            self._filePassed = 0
            self.filename = file
            modeDict = {
                'r': 'rb',
                'w': 'wb',
                'a': 'r+b' }
            self.fp = open(file, modeDict[mode])
        else:
            self._filePassed = 1
            self.fp = file
            self.filename = getattr(file, 'name', None)
        if key == 'r':
            self._GetContents()
        elif key == 'w':
            pass
        elif key == 'a':

            try:
                self._RealGetContents()
                self.fp.seek(self.start_dir, 0)
            except BadZipfile:
                self.fp.seek(0, 2)
            except:
                None<EXCEPTION MATCH>BadZipfile


        None<EXCEPTION MATCH>BadZipfile
        if not self._filePassed:
            self.fp.close()
            self.fp = None

        raise RuntimeError, 'Mode must be "r", "w" or "a"'


    def _GetContents(self):
        '''Read the directory, making sure we close the file if the format
        is bad.'''

        try:
            self._RealGetContents()
        except BadZipfile:
            if not self._filePassed:
                self.fp.close()
                self.fp = None

            raise



    def _RealGetContents(self):
        '''Read in the table of contents for the ZIP file.'''
        fp = self.fp
        endrec = _EndRecData(fp)
        if not endrec:
            raise BadZipfile, 'File is not a zip file'

        if self.debug > 1:
            print endrec

        size_cd = endrec[5]
        offset_cd = endrec[6]
        self.comment = endrec[8]
        if endrec[9] > ZIP64_LIMIT:
            x = endrec[9] - size_cd - 56 - 20
        else:
            x = endrec[9] - size_cd
        concat = x - offset_cd
        if self.debug > 2:
            print 'given, inferred, offset', offset_cd, x, concat

        self.start_dir = offset_cd + concat
        fp.seek(self.start_dir, 0)
        data = fp.read(size_cd)
        fp = cStringIO.StringIO(data)
        total = 0
        while total < size_cd:
            centdir = fp.read(46)
            total = total + 46
            if centdir[0:4] != stringCentralDir:
                raise BadZipfile, 'Bad magic number for central directory'

            centdir = struct.unpack(structCentralDir, centdir)
            if self.debug > 2:
                print centdir

            filename = fp.read(centdir[_CD_FILENAME_LENGTH])
            x = ZipInfo(filename)
            x.extra = fp.read(centdir[_CD_EXTRA_FIELD_LENGTH])
            x.comment = fp.read(centdir[_CD_COMMENT_LENGTH])
            total = total + centdir[_CD_FILENAME_LENGTH] + centdir[_CD_EXTRA_FIELD_LENGTH] + centdir[_CD_COMMENT_LENGTH]
            x.header_offset = centdir[_CD_LOCAL_HEADER_OFFSET]
            (x.create_version, x.create_system, x.extract_version, x.reserved, x.flag_bits, x.compress_type, t, d, x.CRC, x.compress_size, x.file_size) = centdir[1:12]
            (x.volume, x.internal_attr, x.external_attr) = centdir[15:18]
            x.date_time = ((d >> 9) + 1980, d >> 5 & 15, d & 31, t >> 11, t >> 5 & 63, (t & 31) * 2)
            x._decodeExtra()
            x.header_offset = x.header_offset + concat
            self.filelist.append(x)
            self.NameToInfo[x.filename] = x
            if self.debug > 2:
                print 'total', total
                continue


    def namelist(self):
        '''Return a list of file names in the archive.'''
        l = []
        for data in self.filelist:
            l.append(data.filename)

        return l


    def infolist(self):
        '''Return a list of class ZipInfo instances for files in the
        archive.'''
        return self.filelist


    def printdir(self):
        '''Print a table of contents for the zip file.'''
        print '%-46s %19s %12s' % ('File Name', 'Modified    ', 'Size')
        for zinfo in self.filelist:
            date = '%d-%02d-%02d %02d:%02d:%02d' % zinfo.date_time[:6]
            print '%-46s %s %12d' % (zinfo.filename, date, zinfo.file_size)



    def testzip(self):
        '''Read all the files and check the CRC.'''
        for zinfo in self.filelist:

            try:
                self.read(zinfo.filename)
            continue
            except BadZipfile:
                return zinfo.filename
                continue





    def getinfo(self, name):
        """Return the instance of ZipInfo given 'name'."""
        return self.NameToInfo[name]


    def read(self, name):
        '''Return file bytes (as a string) for name.'''
        if self.mode not in ('r', 'a'):
            raise RuntimeError, 'read() requires mode "r" or "a"'

        if not self.fp:
            raise RuntimeError, 'Attempt to read ZIP archive that was already closed'

        zinfo = self.getinfo(name)
        filepos = self.fp.tell()
        self.fp.seek(zinfo.header_offset, 0)
        fheader = self.fp.read(30)
        if fheader[0:4] != stringFileHeader:
            raise BadZipfile, 'Bad magic number for file header'

        fheader = struct.unpack(structFileHeader, fheader)
        fname = self.fp.read(fheader[_FH_FILENAME_LENGTH])
        if fheader[_FH_EXTRA_FIELD_LENGTH]:
            self.fp.read(fheader[_FH_EXTRA_FIELD_LENGTH])

        if fname != zinfo.orig_filename:
            raise BadZipfile, 'File name in directory "%s" and header "%s" differ.' % (zinfo.orig_filename, fname)

        bytes = self.fp.read(zinfo.compress_size)
        self.fp.seek(filepos, 0)
        if zinfo.compress_type == ZIP_STORED:
            pass
        elif zinfo.compress_type == ZIP_DEFLATED:
            if not zlib:
                raise RuntimeError, 'De-compression requires the (missing) zlib module'

            dc = zlib.decompressobj(-15)
            bytes = dc.decompress(bytes)
            ex = dc.decompress('Z') + dc.flush()
            if ex:
                bytes = bytes + ex

        else:
            raise BadZipfile, 'Unsupported compression method %d for file %s' % (zinfo.compress_type, name)
        crc = binascii.crc32(bytes)
        if crc != zinfo.CRC:
            raise BadZipfile, 'Bad CRC-32 for file %s' % name

        return bytes


    def _writecheck(self, zinfo):
        '''Check for errors before writing a file to the archive.'''
        if zinfo.filename in self.NameToInfo:
            if self.debug:
                print 'Duplicate name:', zinfo.filename


        if self.mode not in ('w', 'a'):
            raise RuntimeError, 'write() requires mode "w" or "a"'

        if not self.fp:
            raise RuntimeError, 'Attempt to write ZIP archive that was already closed'

        if zinfo.compress_type == ZIP_DEFLATED and not zlib:
            raise RuntimeError, 'Compression requires the (missing) zlib module'

        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED):
            raise RuntimeError, 'That compression method is not supported'

        if zinfo.file_size > ZIP64_LIMIT:
            if not self._allowZip64:
                raise LargeZipFile('Filesize would require ZIP64 extensions')


        if zinfo.header_offset > ZIP64_LIMIT:
            if not self._allowZip64:
                raise LargeZipFile('Zipfile size would require ZIP64 extensions')




    def write(self, filename, arcname = None, compress_type = None):
        '''Put the bytes from filename into the archive under the name
        arcname.'''
        st = os.stat(filename)
        mtime = time.localtime(st.st_mtime)
        date_time = mtime[0:6]
        if arcname is None:
            arcname = filename

        arcname = os.path.normpath(os.path.splitdrive(arcname)[1])
        while arcname[0] in (os.sep, os.altsep):
            arcname = arcname[1:]
        zinfo = ZipInfo(arcname, date_time)
        zinfo.external_attr = (st[0] & 65535) << 0x10L
        if compress_type is None:
            zinfo.compress_type = self.compression
        else:
            zinfo.compress_type = compress_type
        zinfo.file_size = st.st_size
        zinfo.flag_bits = 0
        zinfo.header_offset = self.fp.tell()
        self._writecheck(zinfo)
        self._didModify = True
        fp = open(filename, 'rb')
        zinfo.CRC = CRC = 0
        zinfo.compress_size = compress_size = 0
        zinfo.file_size = file_size = 0
        self.fp.write(zinfo.FileHeader())
        if zinfo.compress_type == ZIP_DEFLATED:
            cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15)
        else:
            cmpr = None
        while None:
            buf = fp.read(8192)
            if not buf:
                break

            file_size = file_size + len(buf)
            CRC = binascii.crc32(buf, CRC)
            if cmpr:
                buf = cmpr.compress(buf)
                compress_size = compress_size + len(buf)

            continue
            fp.close()
            if cmpr:
                buf = cmpr.flush()
                compress_size = compress_size + len(buf)
                self.fp.write(buf)
                zinfo.compress_size = compress_size
            else:
                zinfo.compress_size = file_size
        zinfo.CRC = CRC
        zinfo.file_size = file_size
        position = self.fp.tell()
        self.fp.seek(zinfo.header_offset + 14, 0)
        self.fp.write(struct.pack('<lLL', zinfo.CRC, zinfo.compress_size, zinfo.file_size))
        self.fp.seek(position, 0)
        self.filelist.append(zinfo)
        self.NameToInfo[zinfo.filename] = zinfo


    def writestr(self, zinfo_or_arcname, bytes):
        """Write a file into the archive.  The contents is the string
        'bytes'.  'zinfo_or_arcname' is either a ZipInfo instance or
        the name of the file in the archive."""
        if not isinstance(zinfo_or_arcname, ZipInfo):
            zinfo = ZipInfo(filename = zinfo_or_arcname, date_time = time.localtime(time.time())[:6])
            zinfo.compress_type = self.compression
        else:
            zinfo = zinfo_or_arcname
        zinfo.file_size = len(bytes)
        zinfo.header_offset = self.fp.tell()
        self._writecheck(zinfo)
        self._didModify = True
        zinfo.CRC = binascii.crc32(bytes)
        if zinfo.compress_type == ZIP_DEFLATED:
            co = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15)
            bytes = co.compress(bytes) + co.flush()
            zinfo.compress_size = len(bytes)
        else:
            zinfo.compress_size = zinfo.file_size
        zinfo.header_offset = self.fp.tell()
        self.fp.write(zinfo.FileHeader())
        self.fp.write(bytes)
        self.fp.flush()
        if zinfo.flag_bits & 8:
            self.fp.write(struct.pack('<lLL', zinfo.CRC, zinfo.compress_size, zinfo.file_size))

        self.filelist.append(zinfo)
        self.NameToInfo[zinfo.filename] = zinfo


    def __del__(self):
        '''Call the "close()" method in case the user forgot.'''
        self.close()


    def close(self):
        '''Close the file, and for mode "w" and "a" write the ending
        records.'''
        if self.fp is None:
            return None

        if self.mode in ('w', 'a') and self._didModify:
            count = 0
            pos1 = self.fp.tell()
            for zinfo in self.filelist:
                count = count + 1
                dt = zinfo.date_time
                dosdate = dt[0] - 1980 << 9 | dt[1] << 5 | dt[2]
                dostime = dt[3] << 11 | dt[4] << 5 | dt[5] // 2
                extra = []
                if zinfo.file_size > ZIP64_LIMIT or zinfo.compress_size > ZIP64_LIMIT:
                    extra.append(zinfo.file_size)
                    extra.append(zinfo.compress_size)
                    file_size = 0xFFFFFFFFL
                    compress_size = 0xFFFFFFFFL
                else:
                    file_size = zinfo.file_size
                    compress_size = zinfo.compress_size
                if zinfo.header_offset > ZIP64_LIMIT:
                    extra.append(zinfo.header_offset)
                    header_offset = -1
                else:
                    header_offset = zinfo.header_offset
                extra_data = zinfo.extra
                if extra:
                    extra_data = struct.pack('<hh' + 'q' * len(extra), 1, 8 * len(extra), *extra) + extra_data
                    extract_version = max(45, zinfo.extract_version)
                    create_version = max(45, zinfo.create_version)
                else:
                    extract_version = zinfo.extract_version
                    create_version = zinfo.create_version
                centdir = struct.pack(structCentralDir, stringCentralDir, create_version, zinfo.create_system, extract_version, zinfo.reserved, zinfo.flag_bits, zinfo.compress_type, dostime, dosdate, zinfo.CRC, compress_size, file_size, len(zinfo.filename), len(extra_data), len(zinfo.comment), 0, zinfo.internal_attr, zinfo.external_attr, header_offset)
                self.fp.write(centdir)
                self.fp.write(zinfo.filename)
                self.fp.write(extra_data)
                self.fp.write(zinfo.comment)

            pos2 = self.fp.tell()
            if pos1 > ZIP64_LIMIT:
                zip64endrec = struct.pack(structEndArchive64, stringEndArchive64, 44, 45, 45, 0, 0, count, count, pos2 - pos1, pos1)
                self.fp.write(zip64endrec)
                zip64locrec = struct.pack(structEndArchive64Locator, stringEndArchive64Locator, 0, pos2, 1)
                self.fp.write(zip64locrec)
                pos3 = self.fp.tell()
                endrec = struct.pack(structEndArchive, stringEndArchive, 0, 0, count, count, pos2 - pos1, -1, 0)
                self.fp.write(endrec)
            else:
                endrec = struct.pack(structEndArchive, stringEndArchive, 0, 0, count, count, pos2 - pos1, pos1, 0)
                self.fp.write(endrec)
            self.fp.flush()

        if not self._filePassed:
            self.fp.close()

        self.fp = None



class PyZipFile(ZipFile):
    '''Class to create ZIP archives with Python library files and packages.'''

    def writepy(self, pathname, basename = ''):
        '''Add all files from "pathname" to the ZIP archive.

        If pathname is a package directory, search the directory and
        all package subdirectories recursively for all *.py and enter
        the modules into the archive.  If pathname is a plain
        directory, listdir *.py and enter all modules.  Else, pathname
        must be a Python *.py file and the module will be put into the
        archive.  Added modules are always module.pyo or module.pyc.
        This method will compile the module.py into module.pyc if
        necessary.
        '''
        (dir, name) = os.path.split(pathname)
        if os.path.isdir(pathname):
            initname = os.path.join(pathname, '__init__.py')
            if os.path.isfile(initname):
                if basename:
                    basename = '%s/%s' % (basename, name)
                else:
                    basename = name
                if self.debug:
                    print 'Adding package in', pathname, 'as', basename

                (fname, arcname) = self._get_codename(initname[0:-3], basename)
                if self.debug:
                    print 'Adding', arcname

                self.write(fname, arcname)
                dirlist = os.listdir(pathname)
                dirlist.remove('__init__.py')
                for filename in dirlist:
                    path = os.path.join(pathname, filename)
                    (root, ext) = os.path.splitext(filename)
                    if os.path.isdir(path):
                        if os.path.isfile(os.path.join(path, '__init__.py')):
                            self.writepy(path, basename)

                    os.path.isfile(os.path.join(path, '__init__.py'))
                    if ext == '.py':
                        (fname, arcname) = self._get_codename(path[0:-3], basename)
                        if self.debug:
                            print 'Adding', arcname

                        self.write(fname, arcname)
                        continue

            elif self.debug:
                print 'Adding files from directory', pathname

            for filename in os.listdir(pathname):
                path = os.path.join(pathname, filename)
                (root, ext) = os.path.splitext(filename)
                if ext == '.py':
                    (fname, arcname) = self._get_codename(path[0:-3], basename)
                    if self.debug:
                        print 'Adding', arcname

                    self.write(fname, arcname)
                    continue

        elif pathname[-3:] != '.py':
            raise RuntimeError, 'Files added with writepy() must end with ".py"'

        (fname, arcname) = self._get_codename(pathname[0:-3], basename)
        if self.debug:
            print 'Adding file', arcname

        self.write(fname, arcname)


    def _get_codename(self, pathname, basename):
        '''Return (filename, archivename) for the path.

        Given a module name path, return the correct file path and
        archive name, compiling if necessary.  For example, given
        /python/lib/string, return (/python/lib/string.pyc, string).
        '''
        file_py = pathname + '.py'
        file_pyc = pathname + '.pyc'
        file_pyo = pathname + '.pyo'
        if os.path.isfile(file_pyo) and os.stat(file_pyo).st_mtime >= os.stat(file_py).st_mtime:
            fname = file_pyo
        elif not os.path.isfile(file_pyc) or os.stat(file_pyc).st_mtime < os.stat(file_py).st_mtime:
            import py_compile as py_compile
            if self.debug:
                print 'Compiling', file_py


            try:
                py_compile.compile(file_py, file_pyc, None, True)
            except py_compile.PyCompileError:
                err = None
                print err.msg

            fname = file_pyc
        else:
            fname = file_pyc
        archivename = os.path.split(fname)[1]
        if basename:
            archivename = '%s/%s' % (basename, archivename)

        return (fname, archivename)



def main(args = None):
    import textwrap as textwrap
    USAGE = textwrap.dedent('        Usage:\n            zipfile.py -l zipfile.zip        # Show listing of a zipfile\n            zipfile.py -t zipfile.zip        # Test if a zipfile is valid\n            zipfile.py -e zipfile.zip target # Extract zipfile into target dir\n            zipfile.py -c zipfile.zip src ... # Create zipfile from sources\n        ')
    if args is None:
        args = sys.argv[1:]

    if not args or args[0] not in ('-l', '-c', '-e', '-t'):
        print USAGE
        sys.exit(1)

    if args[0] == '-l':
        if len(args) != 2:
            print USAGE
            sys.exit(1)

        zf = ZipFile(args[1], 'r')
        zf.printdir()
        zf.close()
    elif args[0] == '-t':
        if len(args) != 2:
            print USAGE
            sys.exit(1)

        zf = ZipFile(args[1], 'r')
        zf.testzip()
        print 'Done testing'
    elif args[0] == '-e':
        if len(args) != 3:
            print USAGE
            sys.exit(1)

        zf = ZipFile(args[1], 'r')
        out = args[2]
        for path in zf.namelist():
            if path.startswith('./'):
                tgt = os.path.join(out, path[2:])
            else:
                tgt = os.path.join(out, path)
            tgtdir = os.path.dirname(tgt)
            if not os.path.exists(tgtdir):
                os.makedirs(tgtdir)

            fp = open(tgt, 'wb')
            fp.write(zf.read(path))
            fp.close()

        zf.close()
    elif args[0] == '-c':
        if len(args) < 3:
            print USAGE
            sys.exit(1)


        def addToZip(zf, path, zippath):
            if os.path.isfile(path):
                zf.write(path, zippath, ZIP_DEFLATED)
            elif os.path.isdir(path):
                for nm in os.listdir(path):
                    addToZip(zf, os.path.join(path, nm), os.path.join(zippath, nm))



        zf = ZipFile(args[1], 'w', allowZip64 = True)
        for src in args[2:]:
            addToZip(zf, src, os.path.basename(src))

        zf.close()


if __name__ == '__main__':
    main()