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@@ -0,0 +1,2183 @@
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+"""
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+Read and write ZIP files.
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+
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+XXX references to utf-8 need further investigation.
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+"""
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+import io
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+import os
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+import importlib.util
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+import sys
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+import time
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+import stat
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+import shutil
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+import struct
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+import binascii
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+import threading
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+
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+try:
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+ import zlib # We may need its compression method
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+ crc32 = zlib.crc32
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+except ImportError:
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+ zlib = None
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+ crc32 = binascii.crc32
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+
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+try:
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+ import bz2 # We may need its compression method
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+except ImportError:
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+ bz2 = None
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+
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+try:
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+ import lzma # We may need its compression method
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+except ImportError:
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+ lzma = None
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+
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+__all__ = ["BadZipFile", "BadZipfile", "error",
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+ "ZIP_STORED", "ZIP_DEFLATED", "ZIP_BZIP2", "ZIP_LZMA",
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+ "is_zipfile", "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile"]
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+
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+class BadZipFile(Exception):
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+ pass
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+
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+
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+class LargeZipFile(Exception):
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+ """
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+ Raised when writing a zipfile, the zipfile requires ZIP64 extensions
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+ and those extensions are disabled.
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+ """
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+
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+error = BadZipfile = BadZipFile # Pre-3.2 compatibility names
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+
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+
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+ZIP64_LIMIT = (1 << 31) - 1
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+ZIP_FILECOUNT_LIMIT = (1 << 16) - 1
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+ZIP_MAX_COMMENT = (1 << 16) - 1
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+
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+# constants for Zip file compression methods
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+ZIP_STORED = 0
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+ZIP_DEFLATED = 8
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+ZIP_BZIP2 = 12
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+ZIP_LZMA = 14
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+# Other ZIP compression methods not supported
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+
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+DEFAULT_VERSION = 20
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+ZIP64_VERSION = 45
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+BZIP2_VERSION = 46
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+LZMA_VERSION = 63
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+# we recognize (but not necessarily support) all features up to that version
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+MAX_EXTRACT_VERSION = 63
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+
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+# Below are some formats and associated data for reading/writing headers using
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+# the struct module. The names and structures of headers/records are those used
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+# in the PKWARE description of the ZIP file format:
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+# http://www.pkware.com/documents/casestudies/APPNOTE.TXT
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+# (URL valid as of January 2008)
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+
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+# The "end of central directory" structure, magic number, size, and indices
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+# (section V.I in the format document)
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+structEndArchive = b"<4s4H2LH"
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+stringEndArchive = b"PK\005\006"
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+sizeEndCentDir = struct.calcsize(structEndArchive)
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+
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+_ECD_SIGNATURE = 0
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+_ECD_DISK_NUMBER = 1
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+_ECD_DISK_START = 2
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+_ECD_ENTRIES_THIS_DISK = 3
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+_ECD_ENTRIES_TOTAL = 4
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+_ECD_SIZE = 5
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+_ECD_OFFSET = 6
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+_ECD_COMMENT_SIZE = 7
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+# These last two indices are not part of the structure as defined in the
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+# spec, but they are used internally by this module as a convenience
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+_ECD_COMMENT = 8
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+_ECD_LOCATION = 9
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+
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+# The "central directory" structure, magic number, size, and indices
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+# of entries in the structure (section V.F in the format document)
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+structCentralDir = "<4s4B4HL2L5H2L"
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+stringCentralDir = b"PK\001\002"
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+sizeCentralDir = struct.calcsize(structCentralDir)
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+
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+# indexes of entries in the central directory structure
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+_CD_SIGNATURE = 0
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+_CD_CREATE_VERSION = 1
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+_CD_CREATE_SYSTEM = 2
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+_CD_EXTRACT_VERSION = 3
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+_CD_EXTRACT_SYSTEM = 4
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+_CD_FLAG_BITS = 5
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+_CD_COMPRESS_TYPE = 6
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+_CD_TIME = 7
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+_CD_DATE = 8
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+_CD_CRC = 9
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+_CD_COMPRESSED_SIZE = 10
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+_CD_UNCOMPRESSED_SIZE = 11
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+_CD_FILENAME_LENGTH = 12
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+_CD_EXTRA_FIELD_LENGTH = 13
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+_CD_COMMENT_LENGTH = 14
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+_CD_DISK_NUMBER_START = 15
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+_CD_INTERNAL_FILE_ATTRIBUTES = 16
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+_CD_EXTERNAL_FILE_ATTRIBUTES = 17
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+_CD_LOCAL_HEADER_OFFSET = 18
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+
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+# The "local file header" structure, magic number, size, and indices
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+# (section V.A in the format document)
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+structFileHeader = "<4s2B4HL2L2H"
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+stringFileHeader = b"PK\003\004"
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+sizeFileHeader = struct.calcsize(structFileHeader)
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+
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+_FH_SIGNATURE = 0
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+_FH_EXTRACT_VERSION = 1
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+_FH_EXTRACT_SYSTEM = 2
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+_FH_GENERAL_PURPOSE_FLAG_BITS = 3
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+_FH_COMPRESSION_METHOD = 4
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+_FH_LAST_MOD_TIME = 5
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+_FH_LAST_MOD_DATE = 6
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+_FH_CRC = 7
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+_FH_COMPRESSED_SIZE = 8
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+_FH_UNCOMPRESSED_SIZE = 9
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+_FH_FILENAME_LENGTH = 10
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+_FH_EXTRA_FIELD_LENGTH = 11
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+
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+# The "Zip64 end of central directory locator" structure, magic number, and size
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+structEndArchive64Locator = "<4sLQL"
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+stringEndArchive64Locator = b"PK\x06\x07"
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+sizeEndCentDir64Locator = struct.calcsize(structEndArchive64Locator)
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+
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+# The "Zip64 end of central directory" record, magic number, size, and indices
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+# (section V.G in the format document)
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+structEndArchive64 = "<4sQ2H2L4Q"
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+stringEndArchive64 = b"PK\x06\x06"
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+sizeEndCentDir64 = struct.calcsize(structEndArchive64)
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+
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+_CD64_SIGNATURE = 0
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+_CD64_DIRECTORY_RECSIZE = 1
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+_CD64_CREATE_VERSION = 2
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+_CD64_EXTRACT_VERSION = 3
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+_CD64_DISK_NUMBER = 4
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+_CD64_DISK_NUMBER_START = 5
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+_CD64_NUMBER_ENTRIES_THIS_DISK = 6
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+_CD64_NUMBER_ENTRIES_TOTAL = 7
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+_CD64_DIRECTORY_SIZE = 8
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+_CD64_OFFSET_START_CENTDIR = 9
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+
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+_DD_SIGNATURE = 0x08074b50
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+
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+_EXTRA_FIELD_STRUCT = struct.Struct('<HH')
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+
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+def _strip_extra(extra, xids):
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+ # Remove Extra Fields with specified IDs.
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+ unpack = _EXTRA_FIELD_STRUCT.unpack
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+ modified = False
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+ buffer = []
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+ start = i = 0
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+ while i + 4 <= len(extra):
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+ xid, xlen = unpack(extra[i : i + 4])
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+ j = i + 4 + xlen
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+ if xid in xids:
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+ if i != start:
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+ buffer.append(extra[start : i])
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+ start = j
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+ modified = True
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+ i = j
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+ if not modified:
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+ return extra
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+ return b''.join(buffer)
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+
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+def _check_zipfile(fp):
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+ try:
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+ if _EndRecData(fp):
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+ return True # file has correct magic number
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+ except OSError:
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+ pass
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+ return False
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+
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+def is_zipfile(filename):
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+ """Quickly see if a file is a ZIP file by checking the magic number.
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+
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+ The filename argument may be a file or file-like object too.
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+ """
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+ result = False
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+ try:
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+ if hasattr(filename, "read"):
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+ result = _check_zipfile(fp=filename)
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+ else:
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+ with open(filename, "rb") as fp:
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+ result = _check_zipfile(fp)
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+ except OSError:
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+ pass
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+ return result
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+
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+def _EndRecData64(fpin, offset, endrec):
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+ """
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+ Read the ZIP64 end-of-archive records and use that to update endrec
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+ """
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+ try:
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+ fpin.seek(offset - sizeEndCentDir64Locator, 2)
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+ except OSError:
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+ # If the seek fails, the file is not large enough to contain a ZIP64
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+ # end-of-archive record, so just return the end record we were given.
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+ return endrec
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+
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+ data = fpin.read(sizeEndCentDir64Locator)
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+ if len(data) != sizeEndCentDir64Locator:
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+ return endrec
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+ sig, diskno, reloff, disks = struct.unpack(structEndArchive64Locator, data)
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+ if sig != stringEndArchive64Locator:
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+ return endrec
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+
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+ if diskno != 0 or disks > 1:
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+ raise BadZipFile("zipfiles that span multiple disks are not supported")
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+
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+ # Assume no 'zip64 extensible data'
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+ fpin.seek(offset - sizeEndCentDir64Locator - sizeEndCentDir64, 2)
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+ data = fpin.read(sizeEndCentDir64)
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+ if len(data) != sizeEndCentDir64:
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+ return endrec
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+ sig, sz, create_version, read_version, disk_num, disk_dir, \
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+ dircount, dircount2, dirsize, diroffset = \
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+ struct.unpack(structEndArchive64, data)
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+ if sig != stringEndArchive64:
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+ return endrec
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+
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+ # Update the original endrec using data from the ZIP64 record
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+ endrec[_ECD_SIGNATURE] = sig
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+ endrec[_ECD_DISK_NUMBER] = disk_num
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+ endrec[_ECD_DISK_START] = disk_dir
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+ endrec[_ECD_ENTRIES_THIS_DISK] = dircount
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+ endrec[_ECD_ENTRIES_TOTAL] = dircount2
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+ endrec[_ECD_SIZE] = dirsize
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+ endrec[_ECD_OFFSET] = diroffset
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+ return endrec
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+
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+
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+def _EndRecData(fpin):
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+ """Return data from the "End of Central Directory" record, or None.
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+
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+ The data is a list of the nine items in the ZIP "End of central dir"
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+ record followed by a tenth item, the file seek offset of this record."""
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+
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+ # Determine file size
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+ fpin.seek(0, 2)
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+ filesize = fpin.tell()
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+
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+ # Check to see if this is ZIP file with no archive comment (the
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+ # "end of central directory" structure should be the last item in the
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+ # file if this is the case).
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+ try:
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+ fpin.seek(-sizeEndCentDir, 2)
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+ except OSError:
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+ return None
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+ data = fpin.read()
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+ if (len(data) == sizeEndCentDir and
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+ data[0:4] == stringEndArchive and
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+ data[-2:] == b"\000\000"):
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+ # the signature is correct and there's no comment, unpack structure
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+ endrec = struct.unpack(structEndArchive, data)
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+ endrec=list(endrec)
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+
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+ # Append a blank comment and record start offset
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+ endrec.append(b"")
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+ endrec.append(filesize - sizeEndCentDir)
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+
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+ # Try to read the "Zip64 end of central directory" structure
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+ return _EndRecData64(fpin, -sizeEndCentDir, endrec)
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+
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+ # Either this is not a ZIP file, or it is a ZIP file with an archive
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+ # comment. Search the end of the file for the "end of central directory"
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+ # record signature. The comment is the last item in the ZIP file and may be
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+ # up to 64K long. It is assumed that the "end of central directory" magic
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+ # number does not appear in the comment.
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+ maxCommentStart = max(filesize - (1 << 16) - sizeEndCentDir, 0)
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+ fpin.seek(maxCommentStart, 0)
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+ data = fpin.read()
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+ start = data.rfind(stringEndArchive)
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+ if start >= 0:
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+ # found the magic number; attempt to unpack and interpret
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+ recData = data[start:start+sizeEndCentDir]
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+ if len(recData) != sizeEndCentDir:
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+ # Zip file is corrupted.
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+ return None
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+ endrec = list(struct.unpack(structEndArchive, recData))
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+ commentSize = endrec[_ECD_COMMENT_SIZE] #as claimed by the zip file
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+ comment = data[start+sizeEndCentDir:start+sizeEndCentDir+commentSize]
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+ endrec.append(comment)
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+ endrec.append(maxCommentStart + start)
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+
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+ # Try to read the "Zip64 end of central directory" structure
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+ return _EndRecData64(fpin, maxCommentStart + start - filesize,
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+ endrec)
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+
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+ # Unable to find a valid end of central directory structure
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+ return None
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+
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+
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+class ZipInfo (object):
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+ """Class with attributes describing each file in the ZIP archive."""
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+
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+ __slots__ = (
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+ 'orig_filename',
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+ 'filename',
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+ 'date_time',
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+ 'compress_type',
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+ '_compresslevel',
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+ 'comment',
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+ 'extra',
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+ 'create_system',
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+ 'create_version',
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+ 'extract_version',
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+ 'reserved',
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+ 'flag_bits',
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+ 'volume',
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+ 'internal_attr',
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+ 'external_attr',
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+ 'header_offset',
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+ 'CRC',
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+ 'compress_size',
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+ 'file_size',
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+ '_raw_time',
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+ 'has_changed_name',
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+ )
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+
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+ def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0), has_changed_name=False):
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+ self.orig_filename = filename # Original file name in archive
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+
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+ # Terminate the file name at the first null byte. Null bytes in file
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+ # names are used as tricks by viruses in archives.
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+ null_byte = filename.find(chr(0))
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+ if null_byte >= 0:
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+ filename = filename[0:null_byte]
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+ # This is used to ensure paths in generated ZIP files always use
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+ # forward slashes as the directory separator, as required by the
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+ # ZIP format specification.
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+ if os.sep != "/" and os.sep in filename:
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+ filename = filename.replace(os.sep, "/")
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+
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+ self.filename = filename # Normalized file name
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+ self.date_time = date_time # year, month, day, hour, min, sec
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+
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+ if date_time[0] < 1980:
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+ raise ValueError('ZIP does not support timestamps before 1980')
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+
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+ # Standard values:
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+ self.compress_type = ZIP_STORED # Type of compression for the file
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+ self._compresslevel = None # Level for the compressor
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+ self.comment = b"" # Comment for each file
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+ self.extra = b"" # ZIP extra data
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+ if sys.platform == 'win32':
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+ self.create_system = 0 # System which created ZIP archive
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+ else:
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+ # Assume everything else is unix-y
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+ self.create_system = 3 # System which created ZIP archive
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+ self.create_version = DEFAULT_VERSION # Version which created ZIP archive
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+ self.extract_version = DEFAULT_VERSION # Version needed to extract archive
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+ self.reserved = 0 # Must be zero
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+ self.flag_bits = 0 # ZIP flag bits
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+ self.volume = 0 # Volume number of file header
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+ self.internal_attr = 0 # Internal attributes
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+ self.external_attr = 0 # External file attributes
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+ # Other attributes are set by class ZipFile:
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+ # header_offset Byte offset to the file header
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+ # CRC CRC-32 of the uncompressed file
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+ # compress_size Size of the compressed file
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+ # file_size Size of the uncompressed file
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+ self.has_changed_name = has_changed_name
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+
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+ def __repr__(self):
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+ result = ['<%s filename=%r' % (self.__class__.__name__, self.filename)]
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+ if self.compress_type != ZIP_STORED:
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+ result.append(' compress_type=%s' %
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+ compressor_names.get(self.compress_type,
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+ self.compress_type))
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+ hi = self.external_attr >> 16
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+ lo = self.external_attr & 0xFFFF
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+ if hi:
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+ result.append(' filemode=%r' % stat.filemode(hi))
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+ if lo:
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+ result.append(' external_attr=%#x' % lo)
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+ isdir = self.is_dir()
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|
|
+ if not isdir or self.file_size:
|
|
|
+ result.append(' file_size=%r' % self.file_size)
|
|
|
+ if ((not isdir or self.compress_size) and
|
|
|
+ (self.compress_type != ZIP_STORED or
|
|
|
+ self.file_size != self.compress_size)):
|
|
|
+ result.append(' compress_size=%r' % self.compress_size)
|
|
|
+ result.append('>')
|
|
|
+ return ''.join(result)
|
|
|
+
|
|
|
+ def FileHeader(self, zip64=None):
|
|
|
+ """Return the per-file header as a bytes object."""
|
|
|
+ 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 & 0x08:
|
|
|
+ # Set these to zero because we write them after the file data
|
|
|
+ CRC = compress_size = file_size = 0
|
|
|
+ else:
|
|
|
+ CRC = self.CRC
|
|
|
+ compress_size = self.compress_size
|
|
|
+ file_size = self.file_size
|
|
|
+
|
|
|
+ extra = self.extra
|
|
|
+
|
|
|
+ min_version = 0
|
|
|
+ if zip64 is None:
|
|
|
+ zip64 = file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT
|
|
|
+ if zip64:
|
|
|
+ fmt = '<HHQQ'
|
|
|
+ extra = extra + struct.pack(fmt,
|
|
|
+ 1, struct.calcsize(fmt)-4, file_size, compress_size)
|
|
|
+ if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
|
|
|
+ if not zip64:
|
|
|
+ raise LargeZipFile("Filesize would require ZIP64 extensions")
|
|
|
+ # File is larger than what fits into a 4 byte integer,
|
|
|
+ # fall back to the ZIP64 extension
|
|
|
+ file_size = 0xffffffff
|
|
|
+ compress_size = 0xffffffff
|
|
|
+ min_version = ZIP64_VERSION
|
|
|
+
|
|
|
+ if self.compress_type == ZIP_BZIP2:
|
|
|
+ min_version = max(BZIP2_VERSION, min_version)
|
|
|
+ elif self.compress_type == ZIP_LZMA:
|
|
|
+ min_version = max(LZMA_VERSION, min_version)
|
|
|
+
|
|
|
+ self.extract_version = max(min_version, self.extract_version)
|
|
|
+ self.create_version = max(min_version, self.create_version)
|
|
|
+ filename, flag_bits = self._encodeFilenameFlags()
|
|
|
+ header = struct.pack(structFileHeader, stringFileHeader,
|
|
|
+ self.extract_version, self.reserved, flag_bits,
|
|
|
+ self.compress_type, dostime, dosdate, CRC,
|
|
|
+ compress_size, file_size,
|
|
|
+ len(filename), len(extra))
|
|
|
+ return header + filename + extra
|
|
|
+
|
|
|
+ def _encodeFilenameFlags(self):
|
|
|
+ try:
|
|
|
+ return self.filename.encode('ascii'), self.flag_bits
|
|
|
+ except UnicodeEncodeError:
|
|
|
+ return self.filename.encode('utf-8'), self.flag_bits | 0x800
|
|
|
+
|
|
|
+ def _decodeExtra(self):
|
|
|
+ # Try to decode the extra field.
|
|
|
+ extra = self.extra
|
|
|
+ unpack = struct.unpack
|
|
|
+ while len(extra) >= 4:
|
|
|
+ tp, ln = unpack('<HH', extra[:4])
|
|
|
+ if ln+4 > len(extra):
|
|
|
+ raise BadZipFile("Corrupt extra field %04x (size=%d)" % (tp, ln))
|
|
|
+ if tp == 0x0001:
|
|
|
+ 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 BadZipFile("Corrupt extra field %04x (size=%d)" % (tp, ln))
|
|
|
+
|
|
|
+ idx = 0
|
|
|
+
|
|
|
+ # ZIP64 extension (large files and/or large archives)
|
|
|
+ if self.file_size in (0xffffffffffffffff, 0xffffffff):
|
|
|
+ if len(counts) <= idx:
|
|
|
+ raise BadZipFile(
|
|
|
+ "Corrupt zip64 extra field. File size not found."
|
|
|
+ )
|
|
|
+ self.file_size = counts[idx]
|
|
|
+ idx += 1
|
|
|
+
|
|
|
+ if self.compress_size == 0xFFFFFFFF:
|
|
|
+ if len(counts) <= idx:
|
|
|
+ raise BadZipFile(
|
|
|
+ "Corrupt zip64 extra field. Compress size not found."
|
|
|
+ )
|
|
|
+ self.compress_size = counts[idx]
|
|
|
+ idx += 1
|
|
|
+
|
|
|
+ if self.header_offset == 0xffffffff:
|
|
|
+ if len(counts) <= idx:
|
|
|
+ raise BadZipFile(
|
|
|
+ "Corrupt zip64 extra field. Header offset not found."
|
|
|
+ )
|
|
|
+ old = self.header_offset
|
|
|
+ self.header_offset = counts[idx]
|
|
|
+ idx+=1
|
|
|
+
|
|
|
+ extra = extra[ln+4:]
|
|
|
+
|
|
|
+ @classmethod
|
|
|
+ def from_file(cls, filename, arcname=None):
|
|
|
+ """Construct an appropriate ZipInfo for a file on the filesystem.
|
|
|
+
|
|
|
+ filename should be the path to a file or directory on the filesystem.
|
|
|
+
|
|
|
+ arcname is the name which it will have within the archive (by default,
|
|
|
+ this will be the same as filename, but without a drive letter and with
|
|
|
+ leading path separators removed).
|
|
|
+ """
|
|
|
+ if isinstance(filename, os.PathLike):
|
|
|
+ filename = os.fspath(filename)
|
|
|
+ st = os.stat(filename)
|
|
|
+ isdir = stat.S_ISDIR(st.st_mode)
|
|
|
+ mtime = time.localtime(st.st_mtime)
|
|
|
+ date_time = mtime[0:6]
|
|
|
+ # Create ZipInfo instance to store file information
|
|
|
+ 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:]
|
|
|
+ if isdir:
|
|
|
+ arcname += '/'
|
|
|
+ zinfo = cls(arcname, date_time)
|
|
|
+ zinfo.external_attr = (st.st_mode & 0xFFFF) << 16 # Unix attributes
|
|
|
+ if isdir:
|
|
|
+ zinfo.file_size = 0
|
|
|
+ zinfo.external_attr |= 0x10 # MS-DOS directory flag
|
|
|
+ else:
|
|
|
+ zinfo.file_size = st.st_size
|
|
|
+
|
|
|
+ return zinfo
|
|
|
+
|
|
|
+ def is_dir(self):
|
|
|
+ """Return True if this archive member is a directory."""
|
|
|
+ return self.filename[-1] == '/'
|
|
|
+
|
|
|
+
|
|
|
+# ZIP encryption uses the CRC32 one-byte primitive for scrambling some
|
|
|
+# internal keys. We noticed that a direct implementation is faster than
|
|
|
+# relying on binascii.crc32().
|
|
|
+
|
|
|
+_crctable = None
|
|
|
+def _gen_crc(crc):
|
|
|
+ for j in range(8):
|
|
|
+ if crc & 1:
|
|
|
+ crc = (crc >> 1) ^ 0xEDB88320
|
|
|
+ else:
|
|
|
+ crc >>= 1
|
|
|
+ return crc
|
|
|
+
|
|
|
+# ZIP supports a password-based form of encryption. Even though known
|
|
|
+# plaintext attacks have been found against it, it is still useful
|
|
|
+# to be able to get data out of such a file.
|
|
|
+#
|
|
|
+# Usage:
|
|
|
+# zd = _ZipDecrypter(mypwd)
|
|
|
+# plain_bytes = zd(cypher_bytes)
|
|
|
+
|
|
|
+def _ZipDecrypter(pwd):
|
|
|
+ key0 = 305419896
|
|
|
+ key1 = 591751049
|
|
|
+ key2 = 878082192
|
|
|
+
|
|
|
+ global _crctable
|
|
|
+ if _crctable is None:
|
|
|
+ _crctable = list(map(_gen_crc, range(256)))
|
|
|
+ crctable = _crctable
|
|
|
+
|
|
|
+ def crc32(ch, crc):
|
|
|
+ """Compute the CRC32 primitive on one byte."""
|
|
|
+ return (crc >> 8) ^ crctable[(crc ^ ch) & 0xFF]
|
|
|
+
|
|
|
+ def update_keys(c):
|
|
|
+ nonlocal key0, key1, key2
|
|
|
+ key0 = crc32(c, key0)
|
|
|
+ key1 = (key1 + (key0 & 0xFF)) & 0xFFFFFFFF
|
|
|
+ key1 = (key1 * 134775813 + 1) & 0xFFFFFFFF
|
|
|
+ key2 = crc32(key1 >> 24, key2)
|
|
|
+
|
|
|
+ for p in pwd:
|
|
|
+ update_keys(p)
|
|
|
+
|
|
|
+ def decrypter(data):
|
|
|
+ """Decrypt a bytes object."""
|
|
|
+ result = bytearray()
|
|
|
+ append = result.append
|
|
|
+ for c in data:
|
|
|
+ k = key2 | 2
|
|
|
+ c ^= ((k * (k^1)) >> 8) & 0xFF
|
|
|
+ update_keys(c)
|
|
|
+ append(c)
|
|
|
+ return bytes(result)
|
|
|
+
|
|
|
+ return decrypter
|
|
|
+
|
|
|
+
|
|
|
+class LZMACompressor:
|
|
|
+
|
|
|
+ def __init__(self):
|
|
|
+ self._comp = None
|
|
|
+
|
|
|
+ def _init(self):
|
|
|
+ props = lzma._encode_filter_properties({'id': lzma.FILTER_LZMA1})
|
|
|
+ self._comp = lzma.LZMACompressor(lzma.FORMAT_RAW, filters=[
|
|
|
+ lzma._decode_filter_properties(lzma.FILTER_LZMA1, props)
|
|
|
+ ])
|
|
|
+ return struct.pack('<BBH', 9, 4, len(props)) + props
|
|
|
+
|
|
|
+ def compress(self, data):
|
|
|
+ if self._comp is None:
|
|
|
+ return self._init() + self._comp.compress(data)
|
|
|
+ return self._comp.compress(data)
|
|
|
+
|
|
|
+ def flush(self):
|
|
|
+ if self._comp is None:
|
|
|
+ return self._init() + self._comp.flush()
|
|
|
+ return self._comp.flush()
|
|
|
+
|
|
|
+
|
|
|
+class LZMADecompressor:
|
|
|
+
|
|
|
+ def __init__(self):
|
|
|
+ self._decomp = None
|
|
|
+ self._unconsumed = b''
|
|
|
+ self.eof = False
|
|
|
+
|
|
|
+ def decompress(self, data):
|
|
|
+ if self._decomp is None:
|
|
|
+ self._unconsumed += data
|
|
|
+ if len(self._unconsumed) <= 4:
|
|
|
+ return b''
|
|
|
+ psize, = struct.unpack('<H', self._unconsumed[2:4])
|
|
|
+ if len(self._unconsumed) <= 4 + psize:
|
|
|
+ return b''
|
|
|
+
|
|
|
+ self._decomp = lzma.LZMADecompressor(lzma.FORMAT_RAW, filters=[
|
|
|
+ lzma._decode_filter_properties(lzma.FILTER_LZMA1,
|
|
|
+ self._unconsumed[4:4 + psize])
|
|
|
+ ])
|
|
|
+ data = self._unconsumed[4 + psize:]
|
|
|
+ del self._unconsumed
|
|
|
+
|
|
|
+ result = self._decomp.decompress(data)
|
|
|
+ self.eof = self._decomp.eof
|
|
|
+ return result
|
|
|
+
|
|
|
+
|
|
|
+compressor_names = {
|
|
|
+ 0: 'store',
|
|
|
+ 1: 'shrink',
|
|
|
+ 2: 'reduce',
|
|
|
+ 3: 'reduce',
|
|
|
+ 4: 'reduce',
|
|
|
+ 5: 'reduce',
|
|
|
+ 6: 'implode',
|
|
|
+ 7: 'tokenize',
|
|
|
+ 8: 'deflate',
|
|
|
+ 9: 'deflate64',
|
|
|
+ 10: 'implode',
|
|
|
+ 12: 'bzip2',
|
|
|
+ 14: 'lzma',
|
|
|
+ 18: 'terse',
|
|
|
+ 19: 'lz77',
|
|
|
+ 97: 'wavpack',
|
|
|
+ 98: 'ppmd',
|
|
|
+}
|
|
|
+
|
|
|
+def _check_compression(compression):
|
|
|
+ if compression == ZIP_STORED:
|
|
|
+ pass
|
|
|
+ elif compression == ZIP_DEFLATED:
|
|
|
+ if not zlib:
|
|
|
+ raise RuntimeError(
|
|
|
+ "Compression requires the (missing) zlib module")
|
|
|
+ elif compression == ZIP_BZIP2:
|
|
|
+ if not bz2:
|
|
|
+ raise RuntimeError(
|
|
|
+ "Compression requires the (missing) bz2 module")
|
|
|
+ elif compression == ZIP_LZMA:
|
|
|
+ if not lzma:
|
|
|
+ raise RuntimeError(
|
|
|
+ "Compression requires the (missing) lzma module")
|
|
|
+ else:
|
|
|
+ raise NotImplementedError("That compression method is not supported")
|
|
|
+
|
|
|
+
|
|
|
+def _get_compressor(compress_type, compresslevel=None):
|
|
|
+ if compress_type == ZIP_DEFLATED:
|
|
|
+ if compresslevel is not None:
|
|
|
+ return zlib.compressobj(compresslevel, zlib.DEFLATED, -15)
|
|
|
+ return zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15)
|
|
|
+ elif compress_type == ZIP_BZIP2:
|
|
|
+ if compresslevel is not None:
|
|
|
+ return bz2.BZ2Compressor(compresslevel)
|
|
|
+ return bz2.BZ2Compressor()
|
|
|
+ # compresslevel is ignored for ZIP_LZMA
|
|
|
+ elif compress_type == ZIP_LZMA:
|
|
|
+ return LZMACompressor()
|
|
|
+ else:
|
|
|
+ return None
|
|
|
+
|
|
|
+
|
|
|
+def _get_decompressor(compress_type):
|
|
|
+ if compress_type == ZIP_STORED:
|
|
|
+ return None
|
|
|
+ elif compress_type == ZIP_DEFLATED:
|
|
|
+ return zlib.decompressobj(-15)
|
|
|
+ elif compress_type == ZIP_BZIP2:
|
|
|
+ return bz2.BZ2Decompressor()
|
|
|
+ elif compress_type == ZIP_LZMA:
|
|
|
+ return LZMADecompressor()
|
|
|
+ else:
|
|
|
+ descr = compressor_names.get(compress_type)
|
|
|
+ if descr:
|
|
|
+ raise NotImplementedError("compression type %d (%s)" % (compress_type, descr))
|
|
|
+ else:
|
|
|
+ raise NotImplementedError("compression type %d" % (compress_type,))
|
|
|
+
|
|
|
+
|
|
|
+class _SharedFile:
|
|
|
+ def __init__(self, file, pos, close, lock, writing):
|
|
|
+ self._file = file
|
|
|
+ self._pos = pos
|
|
|
+ self._close = close
|
|
|
+ self._lock = lock
|
|
|
+ self._writing = writing
|
|
|
+ self.seekable = file.seekable
|
|
|
+ self.tell = file.tell
|
|
|
+
|
|
|
+ def seek(self, offset, whence=0):
|
|
|
+ with self._lock:
|
|
|
+ if self._writing():
|
|
|
+ raise ValueError("Can't reposition in the ZIP file while "
|
|
|
+ "there is an open writing handle on it. "
|
|
|
+ "Close the writing handle before trying to read.")
|
|
|
+ self._file.seek(offset, whence)
|
|
|
+ self._pos = self._file.tell()
|
|
|
+ return self._pos
|
|
|
+
|
|
|
+ def read(self, n=-1):
|
|
|
+ with self._lock:
|
|
|
+ if self._writing():
|
|
|
+ raise ValueError("Can't read from the ZIP file while there "
|
|
|
+ "is an open writing handle on it. "
|
|
|
+ "Close the writing handle before trying to read.")
|
|
|
+ self._file.seek(self._pos)
|
|
|
+ data = self._file.read(n)
|
|
|
+ self._pos = self._file.tell()
|
|
|
+ return data
|
|
|
+
|
|
|
+ def close(self):
|
|
|
+ if self._file is not None:
|
|
|
+ fileobj = self._file
|
|
|
+ self._file = None
|
|
|
+ self._close(fileobj)
|
|
|
+
|
|
|
+# Provide the tell method for unseekable stream
|
|
|
+class _Tellable:
|
|
|
+ def __init__(self, fp):
|
|
|
+ self.fp = fp
|
|
|
+ self.offset = 0
|
|
|
+
|
|
|
+ def write(self, data):
|
|
|
+ n = self.fp.write(data)
|
|
|
+ self.offset += n
|
|
|
+ return n
|
|
|
+
|
|
|
+ def tell(self):
|
|
|
+ return self.offset
|
|
|
+
|
|
|
+ def flush(self):
|
|
|
+ self.fp.flush()
|
|
|
+
|
|
|
+ def close(self):
|
|
|
+ self.fp.close()
|
|
|
+
|
|
|
+
|
|
|
+class ZipExtFile(io.BufferedIOBase):
|
|
|
+ """File-like object for reading an archive member.
|
|
|
+ Is returned by ZipFile.open().
|
|
|
+ """
|
|
|
+
|
|
|
+ # Max size supported by decompressor.
|
|
|
+ MAX_N = 1 << 31 - 1
|
|
|
+
|
|
|
+ # Read from compressed files in 4k blocks.
|
|
|
+ MIN_READ_SIZE = 4096
|
|
|
+
|
|
|
+ # Chunk size to read during seek
|
|
|
+ MAX_SEEK_READ = 1 << 24
|
|
|
+
|
|
|
+ def __init__(self, fileobj, mode, zipinfo, pwd=None,
|
|
|
+ close_fileobj=False):
|
|
|
+ self._fileobj = fileobj
|
|
|
+ self._pwd = pwd
|
|
|
+ self._close_fileobj = close_fileobj
|
|
|
+
|
|
|
+ self._compress_type = zipinfo.compress_type
|
|
|
+ self._compress_left = zipinfo.compress_size
|
|
|
+ self._left = zipinfo.file_size
|
|
|
+
|
|
|
+ self._decompressor = _get_decompressor(self._compress_type)
|
|
|
+
|
|
|
+ self._eof = False
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+
|
|
|
+ self.newlines = None
|
|
|
+
|
|
|
+ self.mode = mode
|
|
|
+ self.name = zipinfo.filename
|
|
|
+
|
|
|
+ if hasattr(zipinfo, 'CRC'):
|
|
|
+ self._expected_crc = zipinfo.CRC
|
|
|
+ self._running_crc = crc32(b'')
|
|
|
+ else:
|
|
|
+ self._expected_crc = None
|
|
|
+
|
|
|
+ self._seekable = False
|
|
|
+ try:
|
|
|
+ if fileobj.seekable():
|
|
|
+ self._orig_compress_start = fileobj.tell()
|
|
|
+ self._orig_compress_size = zipinfo.compress_size
|
|
|
+ self._orig_file_size = zipinfo.file_size
|
|
|
+ self._orig_start_crc = self._running_crc
|
|
|
+ self._seekable = True
|
|
|
+ except AttributeError:
|
|
|
+ pass
|
|
|
+
|
|
|
+ self._decrypter = None
|
|
|
+ if pwd:
|
|
|
+ if zipinfo.flag_bits & 0x8:
|
|
|
+ # compare against the file type from extended local headers
|
|
|
+ check_byte = (zipinfo._raw_time >> 8) & 0xff
|
|
|
+ else:
|
|
|
+ # compare against the CRC otherwise
|
|
|
+ check_byte = (zipinfo.CRC >> 24) & 0xff
|
|
|
+ h = self._init_decrypter()
|
|
|
+ if h != check_byte:
|
|
|
+ raise RuntimeError("Bad password for file %r" % zipinfo.orig_filename)
|
|
|
+
|
|
|
+
|
|
|
+ def _init_decrypter(self):
|
|
|
+ self._decrypter = _ZipDecrypter(self._pwd)
|
|
|
+ # The first 12 bytes in the cypher stream is an encryption header
|
|
|
+ # used to strengthen the algorithm. The first 11 bytes are
|
|
|
+ # completely random, while the 12th contains the MSB of the CRC,
|
|
|
+ # or the MSB of the file time depending on the header type
|
|
|
+ # and is used to check the correctness of the password.
|
|
|
+ header = self._fileobj.read(12)
|
|
|
+ self._compress_left -= 12
|
|
|
+ return self._decrypter(header)[11]
|
|
|
+
|
|
|
+ def __repr__(self):
|
|
|
+ result = ['<%s.%s' % (self.__class__.__module__,
|
|
|
+ self.__class__.__qualname__)]
|
|
|
+ if not self.closed:
|
|
|
+ result.append(' name=%r mode=%r' % (self.name, self.mode))
|
|
|
+ if self._compress_type != ZIP_STORED:
|
|
|
+ result.append(' compress_type=%s' %
|
|
|
+ compressor_names.get(self._compress_type,
|
|
|
+ self._compress_type))
|
|
|
+ else:
|
|
|
+ result.append(' [closed]')
|
|
|
+ result.append('>')
|
|
|
+ return ''.join(result)
|
|
|
+
|
|
|
+ def readline(self, limit=-1):
|
|
|
+ """Read and return a line from the stream.
|
|
|
+
|
|
|
+ If limit is specified, at most limit bytes will be read.
|
|
|
+ """
|
|
|
+
|
|
|
+ if limit < 0:
|
|
|
+ # Shortcut common case - newline found in buffer.
|
|
|
+ i = self._readbuffer.find(b'\n', self._offset) + 1
|
|
|
+ if i > 0:
|
|
|
+ line = self._readbuffer[self._offset: i]
|
|
|
+ self._offset = i
|
|
|
+ return line
|
|
|
+
|
|
|
+ return io.BufferedIOBase.readline(self, limit)
|
|
|
+
|
|
|
+ def peek(self, n=1):
|
|
|
+ """Returns buffered bytes without advancing the position."""
|
|
|
+ if n > len(self._readbuffer) - self._offset:
|
|
|
+ chunk = self.read(n)
|
|
|
+ if len(chunk) > self._offset:
|
|
|
+ self._readbuffer = chunk + self._readbuffer[self._offset:]
|
|
|
+ self._offset = 0
|
|
|
+ else:
|
|
|
+ self._offset -= len(chunk)
|
|
|
+
|
|
|
+ # Return up to 512 bytes to reduce allocation overhead for tight loops.
|
|
|
+ return self._readbuffer[self._offset: self._offset + 512]
|
|
|
+
|
|
|
+ def readable(self):
|
|
|
+ return True
|
|
|
+
|
|
|
+ def read(self, n=-1):
|
|
|
+ """Read and return up to n bytes.
|
|
|
+ If the argument is omitted, None, or negative, data is read and returned until EOF is reached.
|
|
|
+ """
|
|
|
+ if n is None or n < 0:
|
|
|
+ buf = self._readbuffer[self._offset:]
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+ while not self._eof:
|
|
|
+ buf += self._read1(self.MAX_N)
|
|
|
+ return buf
|
|
|
+
|
|
|
+ end = n + self._offset
|
|
|
+ if end < len(self._readbuffer):
|
|
|
+ buf = self._readbuffer[self._offset:end]
|
|
|
+ self._offset = end
|
|
|
+ return buf
|
|
|
+
|
|
|
+ n = end - len(self._readbuffer)
|
|
|
+ buf = self._readbuffer[self._offset:]
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+ while n > 0 and not self._eof:
|
|
|
+ data = self._read1(n)
|
|
|
+ if n < len(data):
|
|
|
+ self._readbuffer = data
|
|
|
+ self._offset = n
|
|
|
+ buf += data[:n]
|
|
|
+ break
|
|
|
+ buf += data
|
|
|
+ n -= len(data)
|
|
|
+ return buf
|
|
|
+
|
|
|
+ def _update_crc(self, newdata):
|
|
|
+ # Update the CRC using the given data.
|
|
|
+ if self._expected_crc is None:
|
|
|
+ # No need to compute the CRC if we don't have a reference value
|
|
|
+ return
|
|
|
+ self._running_crc = crc32(newdata, self._running_crc)
|
|
|
+ # Check the CRC if we're at the end of the file
|
|
|
+ if self._eof and self._running_crc != self._expected_crc:
|
|
|
+ raise BadZipFile("Bad CRC-32 for file %r" % self.name)
|
|
|
+
|
|
|
+ def read1(self, n):
|
|
|
+ """Read up to n bytes with at most one read() system call."""
|
|
|
+
|
|
|
+ if n is None or n < 0:
|
|
|
+ buf = self._readbuffer[self._offset:]
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+ while not self._eof:
|
|
|
+ data = self._read1(self.MAX_N)
|
|
|
+ if data:
|
|
|
+ buf += data
|
|
|
+ break
|
|
|
+ return buf
|
|
|
+
|
|
|
+ end = n + self._offset
|
|
|
+ if end < len(self._readbuffer):
|
|
|
+ buf = self._readbuffer[self._offset:end]
|
|
|
+ self._offset = end
|
|
|
+ return buf
|
|
|
+
|
|
|
+ n = end - len(self._readbuffer)
|
|
|
+ buf = self._readbuffer[self._offset:]
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+ if n > 0:
|
|
|
+ while not self._eof:
|
|
|
+ data = self._read1(n)
|
|
|
+ if n < len(data):
|
|
|
+ self._readbuffer = data
|
|
|
+ self._offset = n
|
|
|
+ buf += data[:n]
|
|
|
+ break
|
|
|
+ if data:
|
|
|
+ buf += data
|
|
|
+ break
|
|
|
+ return buf
|
|
|
+
|
|
|
+ def _read1(self, n):
|
|
|
+ # Read up to n compressed bytes with at most one read() system call,
|
|
|
+ # decrypt and decompress them.
|
|
|
+ if self._eof or n <= 0:
|
|
|
+ return b''
|
|
|
+
|
|
|
+ # Read from file.
|
|
|
+ if self._compress_type == ZIP_DEFLATED:
|
|
|
+ ## Handle unconsumed data.
|
|
|
+ data = self._decompressor.unconsumed_tail
|
|
|
+ if n > len(data):
|
|
|
+ data += self._read2(n - len(data))
|
|
|
+ else:
|
|
|
+ data = self._read2(n)
|
|
|
+
|
|
|
+ if self._compress_type == ZIP_STORED:
|
|
|
+ self._eof = self._compress_left <= 0
|
|
|
+ elif self._compress_type == ZIP_DEFLATED:
|
|
|
+ n = max(n, self.MIN_READ_SIZE)
|
|
|
+ data = self._decompressor.decompress(data, n)
|
|
|
+ self._eof = (self._decompressor.eof or
|
|
|
+ self._compress_left <= 0 and
|
|
|
+ not self._decompressor.unconsumed_tail)
|
|
|
+ if self._eof:
|
|
|
+ data += self._decompressor.flush()
|
|
|
+ else:
|
|
|
+ data = self._decompressor.decompress(data)
|
|
|
+ self._eof = self._decompressor.eof or self._compress_left <= 0
|
|
|
+
|
|
|
+ data = data[:self._left]
|
|
|
+ self._left -= len(data)
|
|
|
+ if self._left <= 0:
|
|
|
+ self._eof = True
|
|
|
+ self._update_crc(data)
|
|
|
+ return data
|
|
|
+
|
|
|
+ def _read2(self, n):
|
|
|
+ if self._compress_left <= 0:
|
|
|
+ return b''
|
|
|
+
|
|
|
+ n = max(n, self.MIN_READ_SIZE)
|
|
|
+ n = min(n, self._compress_left)
|
|
|
+
|
|
|
+ data = self._fileobj.read(n)
|
|
|
+ self._compress_left -= len(data)
|
|
|
+ if not data:
|
|
|
+ raise EOFError
|
|
|
+
|
|
|
+ if self._decrypter is not None:
|
|
|
+ data = self._decrypter(data)
|
|
|
+ return data
|
|
|
+
|
|
|
+ def close(self):
|
|
|
+ try:
|
|
|
+ if self._close_fileobj:
|
|
|
+ self._fileobj.close()
|
|
|
+ finally:
|
|
|
+ super().close()
|
|
|
+
|
|
|
+ def seekable(self):
|
|
|
+ return self._seekable
|
|
|
+
|
|
|
+ def seek(self, offset, whence=0):
|
|
|
+ if not self._seekable:
|
|
|
+ raise io.UnsupportedOperation("underlying stream is not seekable")
|
|
|
+ curr_pos = self.tell()
|
|
|
+ if whence == 0: # Seek from start of file
|
|
|
+ new_pos = offset
|
|
|
+ elif whence == 1: # Seek from current position
|
|
|
+ new_pos = curr_pos + offset
|
|
|
+ elif whence == 2: # Seek from EOF
|
|
|
+ new_pos = self._orig_file_size + offset
|
|
|
+ else:
|
|
|
+ raise ValueError("whence must be os.SEEK_SET (0), "
|
|
|
+ "os.SEEK_CUR (1), or os.SEEK_END (2)")
|
|
|
+
|
|
|
+ if new_pos > self._orig_file_size:
|
|
|
+ new_pos = self._orig_file_size
|
|
|
+
|
|
|
+ if new_pos < 0:
|
|
|
+ new_pos = 0
|
|
|
+
|
|
|
+ read_offset = new_pos - curr_pos
|
|
|
+ buff_offset = read_offset + self._offset
|
|
|
+
|
|
|
+ if buff_offset >= 0 and buff_offset < len(self._readbuffer):
|
|
|
+ # Just move the _offset index if the new position is in the _readbuffer
|
|
|
+ self._offset = buff_offset
|
|
|
+ read_offset = 0
|
|
|
+ elif read_offset < 0:
|
|
|
+ # Position is before the current position. Reset the ZipExtFile
|
|
|
+ self._fileobj.seek(self._orig_compress_start)
|
|
|
+ self._running_crc = self._orig_start_crc
|
|
|
+ self._compress_left = self._orig_compress_size
|
|
|
+ self._left = self._orig_file_size
|
|
|
+ self._readbuffer = b''
|
|
|
+ self._offset = 0
|
|
|
+ self._decompressor = _get_decompressor(self._compress_type)
|
|
|
+ self._eof = False
|
|
|
+ read_offset = new_pos
|
|
|
+ if self._decrypter is not None:
|
|
|
+ self._init_decrypter()
|
|
|
+
|
|
|
+ while read_offset > 0:
|
|
|
+ read_len = min(self.MAX_SEEK_READ, read_offset)
|
|
|
+ self.read(read_len)
|
|
|
+ read_offset -= read_len
|
|
|
+
|
|
|
+ return self.tell()
|
|
|
+
|
|
|
+ def tell(self):
|
|
|
+ if not self._seekable:
|
|
|
+ raise io.UnsupportedOperation("underlying stream is not seekable")
|
|
|
+ filepos = self._orig_file_size - self._left - len(self._readbuffer) + self._offset
|
|
|
+ return filepos
|
|
|
+
|
|
|
+
|
|
|
+class _ZipWriteFile(io.BufferedIOBase):
|
|
|
+ def __init__(self, zf, zinfo, zip64):
|
|
|
+ self._zinfo = zinfo
|
|
|
+ self._zip64 = zip64
|
|
|
+ self._zipfile = zf
|
|
|
+ self._compressor = _get_compressor(zinfo.compress_type,
|
|
|
+ zinfo._compresslevel)
|
|
|
+ self._file_size = 0
|
|
|
+ self._compress_size = 0
|
|
|
+ self._crc = 0
|
|
|
+
|
|
|
+ @property
|
|
|
+ def _fileobj(self):
|
|
|
+ return self._zipfile.fp
|
|
|
+
|
|
|
+ def writable(self):
|
|
|
+ return True
|
|
|
+
|
|
|
+ def write(self, data):
|
|
|
+ if self.closed:
|
|
|
+ raise ValueError('I/O operation on closed file.')
|
|
|
+ nbytes = len(data)
|
|
|
+ self._file_size += nbytes
|
|
|
+ self._crc = crc32(data, self._crc)
|
|
|
+ if self._compressor:
|
|
|
+ data = self._compressor.compress(data)
|
|
|
+ self._compress_size += len(data)
|
|
|
+ self._fileobj.write(data)
|
|
|
+ return nbytes
|
|
|
+
|
|
|
+ def close(self):
|
|
|
+ if self.closed:
|
|
|
+ return
|
|
|
+ try:
|
|
|
+ super().close()
|
|
|
+ # Flush any data from the compressor, and update header info
|
|
|
+ if self._compressor:
|
|
|
+ buf = self._compressor.flush()
|
|
|
+ self._compress_size += len(buf)
|
|
|
+ self._fileobj.write(buf)
|
|
|
+ self._zinfo.compress_size = self._compress_size
|
|
|
+ else:
|
|
|
+ self._zinfo.compress_size = self._file_size
|
|
|
+ self._zinfo.CRC = self._crc
|
|
|
+ self._zinfo.file_size = self._file_size
|
|
|
+
|
|
|
+ # Write updated header info
|
|
|
+ if self._zinfo.flag_bits & 0x08:
|
|
|
+ # Write CRC and file sizes after the file data
|
|
|
+ fmt = '<LLQQ' if self._zip64 else '<LLLL'
|
|
|
+ self._fileobj.write(struct.pack(fmt, _DD_SIGNATURE, self._zinfo.CRC,
|
|
|
+ self._zinfo.compress_size, self._zinfo.file_size))
|
|
|
+ self._zipfile.start_dir = self._fileobj.tell()
|
|
|
+ else:
|
|
|
+ if not self._zip64:
|
|
|
+ if self._file_size > ZIP64_LIMIT:
|
|
|
+ raise RuntimeError(
|
|
|
+ 'File size unexpectedly exceeded ZIP64 limit')
|
|
|
+ if self._compress_size > ZIP64_LIMIT:
|
|
|
+ raise RuntimeError(
|
|
|
+ 'Compressed size unexpectedly exceeded ZIP64 limit')
|
|
|
+ # Seek backwards and write file header (which will now include
|
|
|
+ # correct CRC and file sizes)
|
|
|
+
|
|
|
+ # Preserve current position in file
|
|
|
+ self._zipfile.start_dir = self._fileobj.tell()
|
|
|
+ self._fileobj.seek(self._zinfo.header_offset)
|
|
|
+ self._fileobj.write(self._zinfo.FileHeader(self._zip64))
|
|
|
+ self._fileobj.seek(self._zipfile.start_dir)
|
|
|
+
|
|
|
+ # Successfully written: Add file to our caches
|
|
|
+ self._zipfile.filelist.append(self._zinfo)
|
|
|
+ self._zipfile.NameToInfo[self._zinfo.filename] = self._zinfo
|
|
|
+ finally:
|
|
|
+ self._zipfile._writing = False
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+class ZipFile:
|
|
|
+ """ Class with methods to open, read, write, close, list zip files.
|
|
|
+
|
|
|
+ z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=True,
|
|
|
+ compresslevel=None)
|
|
|
+
|
|
|
+ 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', exclusive create 'x',
|
|
|
+ or append 'a'.
|
|
|
+ compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
|
|
|
+ ZIP_BZIP2 (requires bz2) or ZIP_LZMA (requires lzma).
|
|
|
+ allowZip64: if True ZipFile will create files with ZIP64 extensions when
|
|
|
+ needed, otherwise it will raise an exception when this would
|
|
|
+ be necessary.
|
|
|
+ compresslevel: None (default for the given compression type) or an integer
|
|
|
+ specifying the level to pass to the compressor.
|
|
|
+ When using ZIP_STORED or ZIP_LZMA this keyword has no effect.
|
|
|
+ When using ZIP_DEFLATED integers 0 through 9 are accepted.
|
|
|
+ When using ZIP_BZIP2 integers 1 through 9 are accepted.
|
|
|
+
|
|
|
+ """
|
|
|
+
|
|
|
+ fp = None # Set here since __del__ checks it
|
|
|
+ _windows_illegal_name_trans_table = None
|
|
|
+
|
|
|
+ def __init__(self, file, mode="r", compression=ZIP_STORED, allowZip64=True,
|
|
|
+ compresslevel=None, has_changed_name=False):
|
|
|
+ """Open the ZIP file with mode read 'r', write 'w', exclusive create 'x',
|
|
|
+ or append 'a'."""
|
|
|
+ if mode not in ('r', 'w', 'x', 'a'):
|
|
|
+ raise ValueError("ZipFile requires mode 'r', 'w', 'x', or 'a'")
|
|
|
+
|
|
|
+ _check_compression(compression)
|
|
|
+
|
|
|
+ self._allowZip64 = allowZip64
|
|
|
+ self._didModify = False
|
|
|
+ self.debug = 0 # Level of printing: 0 through 3
|
|
|
+ self.NameToInfo = {} # Find file info given name
|
|
|
+ self.filelist = [] # List of ZipInfo instances for archive
|
|
|
+ self.compression = compression # Method of compression
|
|
|
+ self.compresslevel = compresslevel
|
|
|
+ self.mode = mode
|
|
|
+ self.pwd = None
|
|
|
+ self._comment = b''
|
|
|
+ self.has_changed_name = has_changed_name
|
|
|
+
|
|
|
+ # Check if we were passed a file-like object
|
|
|
+ if isinstance(file, os.PathLike):
|
|
|
+ file = os.fspath(file)
|
|
|
+ if isinstance(file, str):
|
|
|
+ # No, it's a filename
|
|
|
+ self._filePassed = 0
|
|
|
+ self.filename = file
|
|
|
+ modeDict = {'r' : 'rb', 'w': 'w+b', 'x': 'x+b', 'a' : 'r+b',
|
|
|
+ 'r+b': 'w+b', 'w+b': 'wb', 'x+b': 'xb'}
|
|
|
+ filemode = modeDict[mode]
|
|
|
+ while True:
|
|
|
+ try:
|
|
|
+ self.fp = io.open(file, filemode)
|
|
|
+ except OSError:
|
|
|
+ if filemode in modeDict:
|
|
|
+ filemode = modeDict[filemode]
|
|
|
+ continue
|
|
|
+ raise
|
|
|
+ break
|
|
|
+ else:
|
|
|
+ self._filePassed = 1
|
|
|
+ self.fp = file
|
|
|
+ self.filename = getattr(file, 'name', None)
|
|
|
+ self._fileRefCnt = 1
|
|
|
+ self._lock = threading.RLock()
|
|
|
+ self._seekable = True
|
|
|
+ self._writing = False
|
|
|
+
|
|
|
+ try:
|
|
|
+ if mode == 'r':
|
|
|
+ self._RealGetContents()
|
|
|
+ elif mode in ('w', 'x'):
|
|
|
+ # set the modified flag so central directory gets written
|
|
|
+ # even if no files are added to the archive
|
|
|
+ self._didModify = True
|
|
|
+ try:
|
|
|
+ self.start_dir = self.fp.tell()
|
|
|
+ except (AttributeError, OSError):
|
|
|
+ self.fp = _Tellable(self.fp)
|
|
|
+ self.start_dir = 0
|
|
|
+ self._seekable = False
|
|
|
+ else:
|
|
|
+ # Some file-like objects can provide tell() but not seek()
|
|
|
+ try:
|
|
|
+ self.fp.seek(self.start_dir)
|
|
|
+ except (AttributeError, OSError):
|
|
|
+ self._seekable = False
|
|
|
+ elif mode == 'a':
|
|
|
+ try:
|
|
|
+ # See if file is a zip file
|
|
|
+ self._RealGetContents()
|
|
|
+ # seek to start of directory and overwrite
|
|
|
+ self.fp.seek(self.start_dir)
|
|
|
+ except BadZipFile:
|
|
|
+ # file is not a zip file, just append
|
|
|
+ self.fp.seek(0, 2)
|
|
|
+
|
|
|
+ # set the modified flag so central directory gets written
|
|
|
+ # even if no files are added to the archive
|
|
|
+ self._didModify = True
|
|
|
+ self.start_dir = self.fp.tell()
|
|
|
+ else:
|
|
|
+ raise ValueError("Mode must be 'r', 'w', 'x', or 'a'")
|
|
|
+ except:
|
|
|
+ fp = self.fp
|
|
|
+ self.fp = None
|
|
|
+ self._fpclose(fp)
|
|
|
+ raise
|
|
|
+
|
|
|
+ def __enter__(self):
|
|
|
+ return self
|
|
|
+
|
|
|
+ def __exit__(self, type, value, traceback):
|
|
|
+ self.close()
|
|
|
+
|
|
|
+ def __repr__(self):
|
|
|
+ result = ['<%s.%s' % (self.__class__.__module__,
|
|
|
+ self.__class__.__qualname__)]
|
|
|
+ if self.fp is not None:
|
|
|
+ if self._filePassed:
|
|
|
+ result.append(' file=%r' % self.fp)
|
|
|
+ elif self.filename is not None:
|
|
|
+ result.append(' filename=%r' % self.filename)
|
|
|
+ result.append(' mode=%r' % self.mode)
|
|
|
+ else:
|
|
|
+ result.append(' [closed]')
|
|
|
+ result.append('>')
|
|
|
+ return ''.join(result)
|
|
|
+
|
|
|
+ def _RealGetContents(self):
|
|
|
+ """Read in the table of contents for the ZIP file."""
|
|
|
+ fp = self.fp
|
|
|
+ try:
|
|
|
+ endrec = _EndRecData(fp)
|
|
|
+ except OSError:
|
|
|
+ raise BadZipFile("File is not a zip file")
|
|
|
+ if not endrec:
|
|
|
+ raise BadZipFile("File is not a zip file")
|
|
|
+ if self.debug > 1:
|
|
|
+ print(endrec)
|
|
|
+ size_cd = endrec[_ECD_SIZE] # bytes in central directory
|
|
|
+ offset_cd = endrec[_ECD_OFFSET] # offset of central directory
|
|
|
+ self._comment = endrec[_ECD_COMMENT] # archive comment
|
|
|
+
|
|
|
+ # "concat" is zero, unless zip was concatenated to another file
|
|
|
+ concat = endrec[_ECD_LOCATION] - size_cd - offset_cd
|
|
|
+ if endrec[_ECD_SIGNATURE] == stringEndArchive64:
|
|
|
+ # If Zip64 extension structures are present, account for them
|
|
|
+ concat -= (sizeEndCentDir64 + sizeEndCentDir64Locator)
|
|
|
+
|
|
|
+ if self.debug > 2:
|
|
|
+ inferred = concat + offset_cd
|
|
|
+ print("given, inferred, offset", offset_cd, inferred, concat)
|
|
|
+ # self.start_dir: Position of start of central directory
|
|
|
+ self.start_dir = offset_cd + concat
|
|
|
+ fp.seek(self.start_dir, 0)
|
|
|
+ data = fp.read(size_cd)
|
|
|
+ fp = io.BytesIO(data)
|
|
|
+ total = 0
|
|
|
+ while total < size_cd:
|
|
|
+ centdir = fp.read(sizeCentralDir)
|
|
|
+ if len(centdir) != sizeCentralDir:
|
|
|
+ raise BadZipFile("Truncated central directory")
|
|
|
+ centdir = struct.unpack(structCentralDir, centdir)
|
|
|
+ if centdir[_CD_SIGNATURE] != stringCentralDir:
|
|
|
+ raise BadZipFile("Bad magic number for central directory")
|
|
|
+ if self.debug > 2:
|
|
|
+ print(centdir)
|
|
|
+ filename = fp.read(centdir[_CD_FILENAME_LENGTH])
|
|
|
+ flags = centdir[5]
|
|
|
+ if flags & 0x800:
|
|
|
+ # UTF-8 file names extension
|
|
|
+ filename = filename.decode('utf-8')
|
|
|
+ else:
|
|
|
+ # Historical ZIP filename encoding
|
|
|
+ filename = filename.decode('cp437')
|
|
|
+ # filename = filename.decode('utf-8')
|
|
|
+ # Create ZipInfo instance to store file information
|
|
|
+ x = ZipInfo(filename, has_changed_name=self.has_changed_name)
|
|
|
+ x.extra = fp.read(centdir[_CD_EXTRA_FIELD_LENGTH])
|
|
|
+ x.comment = fp.read(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]
|
|
|
+ if x.extract_version > MAX_EXTRACT_VERSION:
|
|
|
+ raise NotImplementedError("zip file version %.1f" %
|
|
|
+ (x.extract_version / 10))
|
|
|
+ x.volume, x.internal_attr, x.external_attr = centdir[15:18]
|
|
|
+ # Convert date/time code to (year, month, day, hour, min, sec)
|
|
|
+ x._raw_time = t
|
|
|
+ x.date_time = ( (d>>9)+1980, (d>>5)&0xF, d&0x1F,
|
|
|
+ t>>11, (t>>5)&0x3F, (t&0x1F) * 2 )
|
|
|
+
|
|
|
+ x._decodeExtra()
|
|
|
+ x.header_offset = x.header_offset + concat
|
|
|
+ self.filelist.append(x)
|
|
|
+ self.NameToInfo[x.filename] = x
|
|
|
+
|
|
|
+ # update total bytes read from central directory
|
|
|
+ total = (total + sizeCentralDir + centdir[_CD_FILENAME_LENGTH]
|
|
|
+ + centdir[_CD_EXTRA_FIELD_LENGTH]
|
|
|
+ + centdir[_CD_COMMENT_LENGTH])
|
|
|
+
|
|
|
+ if self.debug > 2:
|
|
|
+ print("total", total)
|
|
|
+
|
|
|
+
|
|
|
+ def namelist(self):
|
|
|
+ """Return a list of file names in the archive."""
|
|
|
+ return [data.filename for data in self.filelist]
|
|
|
+
|
|
|
+ def infolist(self):
|
|
|
+ """Return a list of class ZipInfo instances for files in the
|
|
|
+ archive."""
|
|
|
+ return self.filelist
|
|
|
+
|
|
|
+ def printdir(self, file=None):
|
|
|
+ """Print a table of contents for the zip file."""
|
|
|
+ print("%-46s %19s %12s" % ("File Name", "Modified ", "Size"),
|
|
|
+ file=file)
|
|
|
+ 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),
|
|
|
+ file=file)
|
|
|
+
|
|
|
+ def testzip(self):
|
|
|
+ """Read all the files and check the CRC."""
|
|
|
+ chunk_size = 2 ** 20
|
|
|
+ for zinfo in self.filelist:
|
|
|
+ try:
|
|
|
+ # Read by chunks, to avoid an OverflowError or a
|
|
|
+ # MemoryError with very large embedded files.
|
|
|
+ with self.open(zinfo.filename, "r") as f:
|
|
|
+ while f.read(chunk_size): # Check CRC-32
|
|
|
+ pass
|
|
|
+ except BadZipFile:
|
|
|
+ return zinfo.filename
|
|
|
+
|
|
|
+ def getinfo(self, name):
|
|
|
+ """Return the instance of ZipInfo given 'name'."""
|
|
|
+ info = self.NameToInfo.get(name)
|
|
|
+ if info is None:
|
|
|
+ raise KeyError(
|
|
|
+ 'There is no item named %r in the archive' % name)
|
|
|
+
|
|
|
+ return info
|
|
|
+
|
|
|
+ def setpassword(self, pwd):
|
|
|
+ """Set default password for encrypted files."""
|
|
|
+ if pwd and not isinstance(pwd, bytes):
|
|
|
+ raise TypeError("pwd: expected bytes, got %s" % type(pwd).__name__)
|
|
|
+ if pwd:
|
|
|
+ self.pwd = pwd
|
|
|
+ else:
|
|
|
+ self.pwd = None
|
|
|
+
|
|
|
+ @property
|
|
|
+ def comment(self):
|
|
|
+ """The comment text associated with the ZIP file."""
|
|
|
+ return self._comment
|
|
|
+
|
|
|
+ @comment.setter
|
|
|
+ def comment(self, comment):
|
|
|
+ if not isinstance(comment, bytes):
|
|
|
+ raise TypeError("comment: expected bytes, got %s" % type(comment).__name__)
|
|
|
+ # check for valid comment length
|
|
|
+ if len(comment) > ZIP_MAX_COMMENT:
|
|
|
+ import warnings
|
|
|
+ warnings.warn('Archive comment is too long; truncating to %d bytes'
|
|
|
+ % ZIP_MAX_COMMENT, stacklevel=2)
|
|
|
+ comment = comment[:ZIP_MAX_COMMENT]
|
|
|
+ self._comment = comment
|
|
|
+ self._didModify = True
|
|
|
+
|
|
|
+ def read(self, name, pwd=None):
|
|
|
+ """Return file bytes for name."""
|
|
|
+ with self.open(name, "r", pwd) as fp:
|
|
|
+ return fp.read()
|
|
|
+
|
|
|
+ def open(self, name, mode="r", pwd=None, *, force_zip64=False):
|
|
|
+ """Return file-like object for 'name'.
|
|
|
+
|
|
|
+ name is a string for the file name within the ZIP file, or a ZipInfo
|
|
|
+ object.
|
|
|
+
|
|
|
+ mode should be 'r' to read a file already in the ZIP file, or 'w' to
|
|
|
+ write to a file newly added to the archive.
|
|
|
+
|
|
|
+ pwd is the password to decrypt files (only used for reading).
|
|
|
+
|
|
|
+ When writing, if the file size is not known in advance but may exceed
|
|
|
+ 2 GiB, pass force_zip64 to use the ZIP64 format, which can handle large
|
|
|
+ files. If the size is known in advance, it is best to pass a ZipInfo
|
|
|
+ instance for name, with zinfo.file_size set.
|
|
|
+ """
|
|
|
+ if mode not in {"r", "w"}:
|
|
|
+ raise ValueError('open() requires mode "r" or "w"')
|
|
|
+ if pwd and not isinstance(pwd, bytes):
|
|
|
+ raise TypeError("pwd: expected bytes, got %s" % type(pwd).__name__)
|
|
|
+ if pwd and (mode == "w"):
|
|
|
+ raise ValueError("pwd is only supported for reading files")
|
|
|
+ if not self.fp:
|
|
|
+ raise ValueError(
|
|
|
+ "Attempt to use ZIP archive that was already closed")
|
|
|
+
|
|
|
+ # Make sure we have an info object
|
|
|
+ if isinstance(name, ZipInfo):
|
|
|
+ # 'name' is already an info object
|
|
|
+ zinfo = name
|
|
|
+ elif mode == 'w':
|
|
|
+ zinfo = ZipInfo(name)
|
|
|
+ zinfo.compress_type = self.compression
|
|
|
+ zinfo._compresslevel = self.compresslevel
|
|
|
+ else:
|
|
|
+ # Get info object for name
|
|
|
+ zinfo = self.getinfo(name)
|
|
|
+
|
|
|
+ if mode == 'w':
|
|
|
+ return self._open_to_write(zinfo, force_zip64=force_zip64)
|
|
|
+
|
|
|
+ if self._writing:
|
|
|
+ raise ValueError("Can't read from the ZIP file while there "
|
|
|
+ "is an open writing handle on it. "
|
|
|
+ "Close the writing handle before trying to read.")
|
|
|
+
|
|
|
+ # Open for reading:
|
|
|
+ self._fileRefCnt += 1
|
|
|
+ zef_file = _SharedFile(self.fp, zinfo.header_offset,
|
|
|
+ self._fpclose, self._lock, lambda: self._writing)
|
|
|
+ try:
|
|
|
+ # Skip the file header:
|
|
|
+ fheader = zef_file.read(sizeFileHeader)
|
|
|
+ if len(fheader) != sizeFileHeader:
|
|
|
+ raise BadZipFile("Truncated file header")
|
|
|
+ fheader = struct.unpack(structFileHeader, fheader)
|
|
|
+ if fheader[_FH_SIGNATURE] != stringFileHeader:
|
|
|
+ raise BadZipFile("Bad magic number for file header")
|
|
|
+
|
|
|
+ fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
|
|
|
+ if fheader[_FH_EXTRA_FIELD_LENGTH]:
|
|
|
+ zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
|
|
|
+
|
|
|
+ if zinfo.flag_bits & 0x20:
|
|
|
+ # Zip 2.7: compressed patched data
|
|
|
+ raise NotImplementedError("compressed patched data (flag bit 5)")
|
|
|
+
|
|
|
+ if zinfo.flag_bits & 0x40:
|
|
|
+ # strong encryption
|
|
|
+ raise NotImplementedError("strong encryption (flag bit 6)")
|
|
|
+
|
|
|
+ if zinfo.flag_bits & 0x800:
|
|
|
+ # UTF-8 filename
|
|
|
+ fname_str = fname.decode("utf-8")
|
|
|
+ else:
|
|
|
+ fname_str = fname.decode("cp437")
|
|
|
+
|
|
|
+ print('zinfo.has_changed_name', zinfo.has_changed_name)
|
|
|
+ if not zinfo.has_changed_name:
|
|
|
+ if fname_str != zinfo.orig_filename:
|
|
|
+ raise BadZipFile(
|
|
|
+ 'File name in directory %r and header %r differ.'
|
|
|
+ % (zinfo.orig_filename, fname))
|
|
|
+
|
|
|
+ # check for encrypted flag & handle password
|
|
|
+ is_encrypted = zinfo.flag_bits & 0x1
|
|
|
+ if is_encrypted:
|
|
|
+ if not pwd:
|
|
|
+ pwd = self.pwd
|
|
|
+ if not pwd:
|
|
|
+ raise RuntimeError("File %r is encrypted, password "
|
|
|
+ "required for extraction" % name)
|
|
|
+ else:
|
|
|
+ pwd = None
|
|
|
+
|
|
|
+ return ZipExtFile(zef_file, mode, zinfo, pwd, True)
|
|
|
+ except:
|
|
|
+ zef_file.close()
|
|
|
+ raise
|
|
|
+
|
|
|
+ def _open_to_write(self, zinfo, force_zip64=False):
|
|
|
+ if force_zip64 and not self._allowZip64:
|
|
|
+ raise ValueError(
|
|
|
+ "force_zip64 is True, but allowZip64 was False when opening "
|
|
|
+ "the ZIP file."
|
|
|
+ )
|
|
|
+ if self._writing:
|
|
|
+ raise ValueError("Can't write to the ZIP file while there is "
|
|
|
+ "another write handle open on it. "
|
|
|
+ "Close the first handle before opening another.")
|
|
|
+
|
|
|
+ # Sizes and CRC are overwritten with correct data after processing the file
|
|
|
+ if not hasattr(zinfo, 'file_size'):
|
|
|
+ zinfo.file_size = 0
|
|
|
+ zinfo.compress_size = 0
|
|
|
+ zinfo.CRC = 0
|
|
|
+
|
|
|
+ zinfo.flag_bits = 0x00
|
|
|
+ if zinfo.compress_type == ZIP_LZMA:
|
|
|
+ # Compressed data includes an end-of-stream (EOS) marker
|
|
|
+ zinfo.flag_bits |= 0x02
|
|
|
+ if not self._seekable:
|
|
|
+ zinfo.flag_bits |= 0x08
|
|
|
+
|
|
|
+ if not zinfo.external_attr:
|
|
|
+ zinfo.external_attr = 0o600 << 16 # permissions: ?rw-------
|
|
|
+
|
|
|
+ # Compressed size can be larger than uncompressed size
|
|
|
+ zip64 = self._allowZip64 and \
|
|
|
+ (force_zip64 or zinfo.file_size * 1.05 > ZIP64_LIMIT)
|
|
|
+
|
|
|
+ if self._seekable:
|
|
|
+ self.fp.seek(self.start_dir)
|
|
|
+ zinfo.header_offset = self.fp.tell()
|
|
|
+
|
|
|
+ self._writecheck(zinfo)
|
|
|
+ self._didModify = True
|
|
|
+
|
|
|
+ self.fp.write(zinfo.FileHeader(zip64))
|
|
|
+
|
|
|
+ self._writing = True
|
|
|
+ return _ZipWriteFile(self, zinfo, zip64)
|
|
|
+
|
|
|
+ def extract(self, member, path=None, pwd=None):
|
|
|
+ """Extract a member from the archive to the current working directory,
|
|
|
+ using its full name. Its file information is extracted as accurately
|
|
|
+ as possible. `member' may be a filename or a ZipInfo object. You can
|
|
|
+ specify a different directory using `path'.
|
|
|
+ """
|
|
|
+ if path is None:
|
|
|
+ path = os.getcwd()
|
|
|
+ else:
|
|
|
+ path = os.fspath(path)
|
|
|
+
|
|
|
+ return self._extract_member(member, path, pwd)
|
|
|
+
|
|
|
+ def extractall(self, path=None, members=None, pwd=None):
|
|
|
+ """Extract all members from the archive to the current working
|
|
|
+ directory. `path' specifies a different directory to extract to.
|
|
|
+ `members' is optional and must be a subset of the list returned
|
|
|
+ by namelist().
|
|
|
+ """
|
|
|
+ if members is None:
|
|
|
+ members = self.namelist()
|
|
|
+
|
|
|
+ if path is None:
|
|
|
+ path = os.getcwd()
|
|
|
+ else:
|
|
|
+ path = os.fspath(path)
|
|
|
+
|
|
|
+ for zipinfo in members:
|
|
|
+ self._extract_member(zipinfo, path, pwd)
|
|
|
+
|
|
|
+ @classmethod
|
|
|
+ def _sanitize_windows_name(cls, arcname, pathsep):
|
|
|
+ """Replace bad characters and remove trailing dots from parts."""
|
|
|
+ table = cls._windows_illegal_name_trans_table
|
|
|
+ if not table:
|
|
|
+ illegal = ':<>|"?*'
|
|
|
+ table = str.maketrans(illegal, '_' * len(illegal))
|
|
|
+ cls._windows_illegal_name_trans_table = table
|
|
|
+ arcname = arcname.translate(table)
|
|
|
+ # remove trailing dots
|
|
|
+ arcname = (x.rstrip('.') for x in arcname.split(pathsep))
|
|
|
+ # rejoin, removing empty parts.
|
|
|
+ arcname = pathsep.join(x for x in arcname if x)
|
|
|
+ return arcname
|
|
|
+
|
|
|
+ def _extract_member(self, member, targetpath, pwd):
|
|
|
+ """Extract the ZipInfo object 'member' to a physical
|
|
|
+ file on the path targetpath.
|
|
|
+ """
|
|
|
+ if not isinstance(member, ZipInfo):
|
|
|
+ member = self.getinfo(member)
|
|
|
+
|
|
|
+ # build the destination pathname, replacing
|
|
|
+ # forward slashes to platform specific separators.
|
|
|
+ arcname = member.filename.replace('/', os.path.sep)
|
|
|
+
|
|
|
+ if os.path.altsep:
|
|
|
+ arcname = arcname.replace(os.path.altsep, os.path.sep)
|
|
|
+ # interpret absolute pathname as relative, remove drive letter or
|
|
|
+ # UNC path, redundant separators, "." and ".." components.
|
|
|
+ arcname = os.path.splitdrive(arcname)[1]
|
|
|
+ invalid_path_parts = ('', os.path.curdir, os.path.pardir)
|
|
|
+ arcname = os.path.sep.join(x for x in arcname.split(os.path.sep)
|
|
|
+ if x not in invalid_path_parts)
|
|
|
+ if os.path.sep == '\\':
|
|
|
+ # filter illegal characters on Windows
|
|
|
+ arcname = self._sanitize_windows_name(arcname, os.path.sep)
|
|
|
+
|
|
|
+ targetpath = os.path.join(targetpath, arcname)
|
|
|
+ targetpath = os.path.normpath(targetpath)
|
|
|
+
|
|
|
+ # Create all upper directories if necessary.
|
|
|
+ upperdirs = os.path.dirname(targetpath)
|
|
|
+ if upperdirs and not os.path.exists(upperdirs):
|
|
|
+ os.makedirs(upperdirs)
|
|
|
+
|
|
|
+ if member.is_dir():
|
|
|
+ if not os.path.isdir(targetpath):
|
|
|
+ os.mkdir(targetpath)
|
|
|
+ return targetpath
|
|
|
+
|
|
|
+ with self.open(member, pwd=pwd) as source, \
|
|
|
+ open(targetpath, "wb") as target:
|
|
|
+ shutil.copyfileobj(source, target)
|
|
|
+
|
|
|
+ return targetpath
|
|
|
+
|
|
|
+ def _writecheck(self, zinfo):
|
|
|
+ """Check for errors before writing a file to the archive."""
|
|
|
+ if zinfo.filename in self.NameToInfo:
|
|
|
+ import warnings
|
|
|
+ warnings.warn('Duplicate name: %r' % zinfo.filename, stacklevel=3)
|
|
|
+ if self.mode not in ('w', 'x', 'a'):
|
|
|
+ raise ValueError("write() requires mode 'w', 'x', or 'a'")
|
|
|
+ if not self.fp:
|
|
|
+ raise ValueError(
|
|
|
+ "Attempt to write ZIP archive that was already closed")
|
|
|
+ _check_compression(zinfo.compress_type)
|
|
|
+ if not self._allowZip64:
|
|
|
+ requires_zip64 = None
|
|
|
+ if len(self.filelist) >= ZIP_FILECOUNT_LIMIT:
|
|
|
+ requires_zip64 = "Files count"
|
|
|
+ elif zinfo.file_size > ZIP64_LIMIT:
|
|
|
+ requires_zip64 = "Filesize"
|
|
|
+ elif zinfo.header_offset > ZIP64_LIMIT:
|
|
|
+ requires_zip64 = "Zipfile size"
|
|
|
+ if requires_zip64:
|
|
|
+ raise LargeZipFile(requires_zip64 +
|
|
|
+ " would require ZIP64 extensions")
|
|
|
+
|
|
|
+ def write(self, filename, arcname=None,
|
|
|
+ compress_type=None, compresslevel=None):
|
|
|
+ """Put the bytes from filename into the archive under the name
|
|
|
+ arcname."""
|
|
|
+ if not self.fp:
|
|
|
+ raise ValueError(
|
|
|
+ "Attempt to write to ZIP archive that was already closed")
|
|
|
+ if self._writing:
|
|
|
+ raise ValueError(
|
|
|
+ "Can't write to ZIP archive while an open writing handle exists"
|
|
|
+ )
|
|
|
+
|
|
|
+ zinfo = ZipInfo.from_file(filename, arcname)
|
|
|
+
|
|
|
+ if zinfo.is_dir():
|
|
|
+ zinfo.compress_size = 0
|
|
|
+ zinfo.CRC = 0
|
|
|
+ else:
|
|
|
+ if compress_type is not None:
|
|
|
+ zinfo.compress_type = compress_type
|
|
|
+ else:
|
|
|
+ zinfo.compress_type = self.compression
|
|
|
+
|
|
|
+ if compresslevel is not None:
|
|
|
+ zinfo._compresslevel = compresslevel
|
|
|
+ else:
|
|
|
+ zinfo._compresslevel = self.compresslevel
|
|
|
+
|
|
|
+ if zinfo.is_dir():
|
|
|
+ with self._lock:
|
|
|
+ if self._seekable:
|
|
|
+ self.fp.seek(self.start_dir)
|
|
|
+ zinfo.header_offset = self.fp.tell() # Start of header bytes
|
|
|
+ if zinfo.compress_type == ZIP_LZMA:
|
|
|
+ # Compressed data includes an end-of-stream (EOS) marker
|
|
|
+ zinfo.flag_bits |= 0x02
|
|
|
+
|
|
|
+ self._writecheck(zinfo)
|
|
|
+ self._didModify = True
|
|
|
+
|
|
|
+ self.filelist.append(zinfo)
|
|
|
+ self.NameToInfo[zinfo.filename] = zinfo
|
|
|
+ self.fp.write(zinfo.FileHeader(False))
|
|
|
+ self.start_dir = self.fp.tell()
|
|
|
+ else:
|
|
|
+ with open(filename, "rb") as src, self.open(zinfo, 'w') as dest:
|
|
|
+ shutil.copyfileobj(src, dest, 1024*8)
|
|
|
+
|
|
|
+ def writestr(self, zinfo_or_arcname, data,
|
|
|
+ compress_type=None, compresslevel=None):
|
|
|
+ """Write a file into the archive. The contents is 'data', which
|
|
|
+ may be either a 'str' or a 'bytes' instance; if it is a 'str',
|
|
|
+ it is encoded as UTF-8 first.
|
|
|
+ 'zinfo_or_arcname' is either a ZipInfo instance or
|
|
|
+ the name of the file in the archive."""
|
|
|
+ if isinstance(data, str):
|
|
|
+ data = data.encode("utf-8")
|
|
|
+ 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
|
|
|
+ zinfo._compresslevel = self.compresslevel
|
|
|
+ if zinfo.filename[-1] == '/':
|
|
|
+ zinfo.external_attr = 0o40775 << 16 # drwxrwxr-x
|
|
|
+ zinfo.external_attr |= 0x10 # MS-DOS directory flag
|
|
|
+ else:
|
|
|
+ zinfo.external_attr = 0o600 << 16 # ?rw-------
|
|
|
+ else:
|
|
|
+ zinfo = zinfo_or_arcname
|
|
|
+
|
|
|
+ if not self.fp:
|
|
|
+ raise ValueError(
|
|
|
+ "Attempt to write to ZIP archive that was already closed")
|
|
|
+ if self._writing:
|
|
|
+ raise ValueError(
|
|
|
+ "Can't write to ZIP archive while an open writing handle exists."
|
|
|
+ )
|
|
|
+
|
|
|
+ if compress_type is not None:
|
|
|
+ zinfo.compress_type = compress_type
|
|
|
+
|
|
|
+ if compresslevel is not None:
|
|
|
+ zinfo._compresslevel = compresslevel
|
|
|
+
|
|
|
+ zinfo.file_size = len(data) # Uncompressed size
|
|
|
+ with self._lock:
|
|
|
+ with self.open(zinfo, mode='w') as dest:
|
|
|
+ dest.write(data)
|
|
|
+
|
|
|
+ def __del__(self):
|
|
|
+ """Call the "close()" method in case the user forgot."""
|
|
|
+ self.close()
|
|
|
+
|
|
|
+ def close(self):
|
|
|
+ """Close the file, and for mode 'w', 'x' and 'a' write the ending
|
|
|
+ records."""
|
|
|
+ if self.fp is None:
|
|
|
+ return
|
|
|
+
|
|
|
+ if self._writing:
|
|
|
+ raise ValueError("Can't close the ZIP file while there is "
|
|
|
+ "an open writing handle on it. "
|
|
|
+ "Close the writing handle before closing the zip.")
|
|
|
+
|
|
|
+ try:
|
|
|
+ if self.mode in ('w', 'x', 'a') and self._didModify: # write ending records
|
|
|
+ with self._lock:
|
|
|
+ if self._seekable:
|
|
|
+ self.fp.seek(self.start_dir)
|
|
|
+ self._write_end_record()
|
|
|
+ finally:
|
|
|
+ fp = self.fp
|
|
|
+ self.fp = None
|
|
|
+ self._fpclose(fp)
|
|
|
+
|
|
|
+ def _write_end_record(self):
|
|
|
+ for zinfo in self.filelist: # write central directory
|
|
|
+ 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 = 0xffffffff
|
|
|
+ compress_size = 0xffffffff
|
|
|
+ else:
|
|
|
+ file_size = zinfo.file_size
|
|
|
+ compress_size = zinfo.compress_size
|
|
|
+
|
|
|
+ if zinfo.header_offset > ZIP64_LIMIT:
|
|
|
+ extra.append(zinfo.header_offset)
|
|
|
+ header_offset = 0xffffffff
|
|
|
+ else:
|
|
|
+ header_offset = zinfo.header_offset
|
|
|
+
|
|
|
+ extra_data = zinfo.extra
|
|
|
+ min_version = 0
|
|
|
+ if extra:
|
|
|
+ # Append a ZIP64 field to the extra's
|
|
|
+ extra_data = _strip_extra(extra_data, (1,))
|
|
|
+ extra_data = struct.pack(
|
|
|
+ '<HH' + 'Q'*len(extra),
|
|
|
+ 1, 8*len(extra), *extra) + extra_data
|
|
|
+
|
|
|
+ min_version = ZIP64_VERSION
|
|
|
+
|
|
|
+ if zinfo.compress_type == ZIP_BZIP2:
|
|
|
+ min_version = max(BZIP2_VERSION, min_version)
|
|
|
+ elif zinfo.compress_type == ZIP_LZMA:
|
|
|
+ min_version = max(LZMA_VERSION, min_version)
|
|
|
+
|
|
|
+ extract_version = max(min_version, zinfo.extract_version)
|
|
|
+ create_version = max(min_version, zinfo.create_version)
|
|
|
+ try:
|
|
|
+ filename, flag_bits = zinfo._encodeFilenameFlags()
|
|
|
+ centdir = struct.pack(structCentralDir,
|
|
|
+ stringCentralDir, create_version,
|
|
|
+ zinfo.create_system, extract_version, zinfo.reserved,
|
|
|
+ flag_bits, zinfo.compress_type, dostime, dosdate,
|
|
|
+ zinfo.CRC, compress_size, file_size,
|
|
|
+ len(filename), len(extra_data), len(zinfo.comment),
|
|
|
+ 0, zinfo.internal_attr, zinfo.external_attr,
|
|
|
+ header_offset)
|
|
|
+ except DeprecationWarning:
|
|
|
+ print((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), file=sys.stderr)
|
|
|
+ raise
|
|
|
+ self.fp.write(centdir)
|
|
|
+ self.fp.write(filename)
|
|
|
+ self.fp.write(extra_data)
|
|
|
+ self.fp.write(zinfo.comment)
|
|
|
+
|
|
|
+ pos2 = self.fp.tell()
|
|
|
+ # Write end-of-zip-archive record
|
|
|
+ centDirCount = len(self.filelist)
|
|
|
+ centDirSize = pos2 - self.start_dir
|
|
|
+ centDirOffset = self.start_dir
|
|
|
+ requires_zip64 = None
|
|
|
+ if centDirCount > ZIP_FILECOUNT_LIMIT:
|
|
|
+ requires_zip64 = "Files count"
|
|
|
+ elif centDirOffset > ZIP64_LIMIT:
|
|
|
+ requires_zip64 = "Central directory offset"
|
|
|
+ elif centDirSize > ZIP64_LIMIT:
|
|
|
+ requires_zip64 = "Central directory size"
|
|
|
+ if requires_zip64:
|
|
|
+ # Need to write the ZIP64 end-of-archive records
|
|
|
+ if not self._allowZip64:
|
|
|
+ raise LargeZipFile(requires_zip64 +
|
|
|
+ " would require ZIP64 extensions")
|
|
|
+ zip64endrec = struct.pack(
|
|
|
+ structEndArchive64, stringEndArchive64,
|
|
|
+ 44, 45, 45, 0, 0, centDirCount, centDirCount,
|
|
|
+ centDirSize, centDirOffset)
|
|
|
+ self.fp.write(zip64endrec)
|
|
|
+
|
|
|
+ zip64locrec = struct.pack(
|
|
|
+ structEndArchive64Locator,
|
|
|
+ stringEndArchive64Locator, 0, pos2, 1)
|
|
|
+ self.fp.write(zip64locrec)
|
|
|
+ centDirCount = min(centDirCount, 0xFFFF)
|
|
|
+ centDirSize = min(centDirSize, 0xFFFFFFFF)
|
|
|
+ centDirOffset = min(centDirOffset, 0xFFFFFFFF)
|
|
|
+
|
|
|
+ endrec = struct.pack(structEndArchive, stringEndArchive,
|
|
|
+ 0, 0, centDirCount, centDirCount,
|
|
|
+ centDirSize, centDirOffset, len(self._comment))
|
|
|
+ self.fp.write(endrec)
|
|
|
+ self.fp.write(self._comment)
|
|
|
+ self.fp.flush()
|
|
|
+
|
|
|
+ def _fpclose(self, fp):
|
|
|
+ assert self._fileRefCnt > 0
|
|
|
+ self._fileRefCnt -= 1
|
|
|
+ if not self._fileRefCnt and not self._filePassed:
|
|
|
+ fp.close()
|
|
|
+
|
|
|
+
|
|
|
+class PyZipFile(ZipFile):
|
|
|
+ """Class to create ZIP archives with Python library files and packages."""
|
|
|
+
|
|
|
+ def __init__(self, file, mode="r", compression=ZIP_STORED,
|
|
|
+ allowZip64=True, optimize=-1):
|
|
|
+ ZipFile.__init__(self, file, mode=mode, compression=compression,
|
|
|
+ allowZip64=allowZip64)
|
|
|
+ self._optimize = optimize
|
|
|
+
|
|
|
+ def writepy(self, pathname, basename="", filterfunc=None):
|
|
|
+ """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.pyc.
|
|
|
+ This method will compile the module.py into module.pyc if
|
|
|
+ necessary.
|
|
|
+ If filterfunc(pathname) is given, it is called with every argument.
|
|
|
+ When it is False, the file or directory is skipped.
|
|
|
+ """
|
|
|
+ pathname = os.fspath(pathname)
|
|
|
+ if filterfunc and not filterfunc(pathname):
|
|
|
+ if self.debug:
|
|
|
+ label = 'path' if os.path.isdir(pathname) else 'file'
|
|
|
+ print('%s %r skipped by filterfunc' % (label, pathname))
|
|
|
+ return
|
|
|
+ dir, name = os.path.split(pathname)
|
|
|
+ if os.path.isdir(pathname):
|
|
|
+ initname = os.path.join(pathname, "__init__.py")
|
|
|
+ if os.path.isfile(initname):
|
|
|
+ # This is a package directory, add it
|
|
|
+ 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 = sorted(os.listdir(pathname))
|
|
|
+ dirlist.remove("__init__.py")
|
|
|
+ # Add all *.py files and package subdirectories
|
|
|
+ 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")):
|
|
|
+ # This is a package directory, add it
|
|
|
+ self.writepy(path, basename,
|
|
|
+ filterfunc=filterfunc) # Recursive call
|
|
|
+ elif ext == ".py":
|
|
|
+ if filterfunc and not filterfunc(path):
|
|
|
+ if self.debug:
|
|
|
+ print('file %r skipped by filterfunc' % path)
|
|
|
+ continue
|
|
|
+ fname, arcname = self._get_codename(path[0:-3],
|
|
|
+ basename)
|
|
|
+ if self.debug:
|
|
|
+ print("Adding", arcname)
|
|
|
+ self.write(fname, arcname)
|
|
|
+ else:
|
|
|
+ # This is NOT a package directory, add its files at top level
|
|
|
+ if self.debug:
|
|
|
+ print("Adding files from directory", pathname)
|
|
|
+ for filename in sorted(os.listdir(pathname)):
|
|
|
+ path = os.path.join(pathname, filename)
|
|
|
+ root, ext = os.path.splitext(filename)
|
|
|
+ if ext == ".py":
|
|
|
+ if filterfunc and not filterfunc(path):
|
|
|
+ if self.debug:
|
|
|
+ print('file %r skipped by filterfunc' % path)
|
|
|
+ continue
|
|
|
+ fname, arcname = self._get_codename(path[0:-3],
|
|
|
+ basename)
|
|
|
+ if self.debug:
|
|
|
+ print("Adding", arcname)
|
|
|
+ self.write(fname, arcname)
|
|
|
+ else:
|
|
|
+ if 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).
|
|
|
+ """
|
|
|
+ def _compile(file, optimize=-1):
|
|
|
+ import py_compile
|
|
|
+ if self.debug:
|
|
|
+ print("Compiling", file)
|
|
|
+ try:
|
|
|
+ py_compile.compile(file, doraise=True, optimize=optimize)
|
|
|
+ except py_compile.PyCompileError as err:
|
|
|
+ print(err.msg)
|
|
|
+ return False
|
|
|
+ return True
|
|
|
+
|
|
|
+ file_py = pathname + ".py"
|
|
|
+ file_pyc = pathname + ".pyc"
|
|
|
+ pycache_opt0 = importlib.util.cache_from_source(file_py, optimization='')
|
|
|
+ pycache_opt1 = importlib.util.cache_from_source(file_py, optimization=1)
|
|
|
+ pycache_opt2 = importlib.util.cache_from_source(file_py, optimization=2)
|
|
|
+ if self._optimize == -1:
|
|
|
+ # legacy mode: use whatever file is present
|
|
|
+ if (os.path.isfile(file_pyc) and
|
|
|
+ os.stat(file_pyc).st_mtime >= os.stat(file_py).st_mtime):
|
|
|
+ # Use .pyc file.
|
|
|
+ arcname = fname = file_pyc
|
|
|
+ elif (os.path.isfile(pycache_opt0) and
|
|
|
+ os.stat(pycache_opt0).st_mtime >= os.stat(file_py).st_mtime):
|
|
|
+ # Use the __pycache__/*.pyc file, but write it to the legacy pyc
|
|
|
+ # file name in the archive.
|
|
|
+ fname = pycache_opt0
|
|
|
+ arcname = file_pyc
|
|
|
+ elif (os.path.isfile(pycache_opt1) and
|
|
|
+ os.stat(pycache_opt1).st_mtime >= os.stat(file_py).st_mtime):
|
|
|
+ # Use the __pycache__/*.pyc file, but write it to the legacy pyc
|
|
|
+ # file name in the archive.
|
|
|
+ fname = pycache_opt1
|
|
|
+ arcname = file_pyc
|
|
|
+ elif (os.path.isfile(pycache_opt2) and
|
|
|
+ os.stat(pycache_opt2).st_mtime >= os.stat(file_py).st_mtime):
|
|
|
+ # Use the __pycache__/*.pyc file, but write it to the legacy pyc
|
|
|
+ # file name in the archive.
|
|
|
+ fname = pycache_opt2
|
|
|
+ arcname = file_pyc
|
|
|
+ else:
|
|
|
+ # Compile py into PEP 3147 pyc file.
|
|
|
+ if _compile(file_py):
|
|
|
+ if sys.flags.optimize == 0:
|
|
|
+ fname = pycache_opt0
|
|
|
+ elif sys.flags.optimize == 1:
|
|
|
+ fname = pycache_opt1
|
|
|
+ else:
|
|
|
+ fname = pycache_opt2
|
|
|
+ arcname = file_pyc
|
|
|
+ else:
|
|
|
+ fname = arcname = file_py
|
|
|
+ else:
|
|
|
+ # new mode: use given optimization level
|
|
|
+ if self._optimize == 0:
|
|
|
+ fname = pycache_opt0
|
|
|
+ arcname = file_pyc
|
|
|
+ else:
|
|
|
+ arcname = file_pyc
|
|
|
+ if self._optimize == 1:
|
|
|
+ fname = pycache_opt1
|
|
|
+ elif self._optimize == 2:
|
|
|
+ fname = pycache_opt2
|
|
|
+ else:
|
|
|
+ msg = "invalid value for 'optimize': {!r}".format(self._optimize)
|
|
|
+ raise ValueError(msg)
|
|
|
+ if not (os.path.isfile(fname) and
|
|
|
+ os.stat(fname).st_mtime >= os.stat(file_py).st_mtime):
|
|
|
+ if not _compile(file_py, optimize=self._optimize):
|
|
|
+ fname = arcname = file_py
|
|
|
+ archivename = os.path.split(arcname)[1]
|
|
|
+ if basename:
|
|
|
+ archivename = "%s/%s" % (basename, archivename)
|
|
|
+ return (fname, archivename)
|
|
|
+
|
|
|
+
|
|
|
+def main(args=None):
|
|
|
+ import argparse
|
|
|
+
|
|
|
+ description = 'A simple command-line interface for zipfile module.'
|
|
|
+ parser = argparse.ArgumentParser(description=description)
|
|
|
+ group = parser.add_mutually_exclusive_group(required=True)
|
|
|
+ group.add_argument('-l', '--list', metavar='<zipfile>',
|
|
|
+ help='Show listing of a zipfile')
|
|
|
+ group.add_argument('-e', '--extract', nargs=2,
|
|
|
+ metavar=('<zipfile>', '<output_dir>'),
|
|
|
+ help='Extract zipfile into target dir')
|
|
|
+ group.add_argument('-c', '--create', nargs='+',
|
|
|
+ metavar=('<name>', '<file>'),
|
|
|
+ help='Create zipfile from sources')
|
|
|
+ group.add_argument('-t', '--test', metavar='<zipfile>',
|
|
|
+ help='Test if a zipfile is valid')
|
|
|
+ args = parser.parse_args(args)
|
|
|
+
|
|
|
+ if args.test is not None:
|
|
|
+ src = args.test
|
|
|
+ with ZipFile(src, 'r') as zf:
|
|
|
+ badfile = zf.testzip()
|
|
|
+ if badfile:
|
|
|
+ print("The following enclosed file is corrupted: {!r}".format(badfile))
|
|
|
+ print("Done testing")
|
|
|
+
|
|
|
+ elif args.list is not None:
|
|
|
+ src = args.list
|
|
|
+ with ZipFile(src, 'r') as zf:
|
|
|
+ zf.printdir()
|
|
|
+
|
|
|
+ elif args.extract is not None:
|
|
|
+ src, curdir = args.extract
|
|
|
+ with ZipFile(src, 'r') as zf:
|
|
|
+ zf.extractall(curdir)
|
|
|
+
|
|
|
+ elif args.create is not None:
|
|
|
+ zip_name = args.create.pop(0)
|
|
|
+ files = args.create
|
|
|
+
|
|
|
+ def addToZip(zf, path, zippath):
|
|
|
+ if os.path.isfile(path):
|
|
|
+ zf.write(path, zippath, ZIP_DEFLATED)
|
|
|
+ elif os.path.isdir(path):
|
|
|
+ if zippath:
|
|
|
+ zf.write(path, zippath)
|
|
|
+ for nm in sorted(os.listdir(path)):
|
|
|
+ addToZip(zf,
|
|
|
+ os.path.join(path, nm), os.path.join(zippath, nm))
|
|
|
+ # else: ignore
|
|
|
+
|
|
|
+ with ZipFile(zip_name, 'w') as zf:
|
|
|
+ for path in files:
|
|
|
+ zippath = os.path.basename(path)
|
|
|
+ if not zippath:
|
|
|
+ zippath = os.path.basename(os.path.dirname(path))
|
|
|
+ if zippath in ('', os.curdir, os.pardir):
|
|
|
+ zippath = ''
|
|
|
+ addToZip(zf, path, zippath)
|
|
|
+
|
|
|
+if __name__ == "__main__":
|
|
|
+ main()
|
