view zipfiles/zipfile267.diff @ 205:166a23999bf7

Added confvar okexitcodemask; changed the validator protocol Callable validators now return three-tuples (number granted, bool correct, str comment) instead of two-tuples (number granted, str comment). They are still allowed to return single numbers. Callable validators must now explicitly raise upreckon.exceptions.WrongAnswer if they want the verdict to be Wrong Answer rather than Partly Correct. okexitcodemask specifies a bitmask ANDed with the exit code of the external validator to get a boolean flag showing whether the answer is to be marked as 'OK' rather than 'partly correct'. The bits covered by the bitmask are reset to zeroes before devising the number of points granted from the resulting number.
author Oleg Oshmyan <chortos@inbox.lv>
date Wed, 17 Aug 2011 20:44:54 +0300
parents b993d9257400
children
line wrap: on
line source

--- /usr/lib/python2.6/zipfile.py	2010-07-05 14:48:38.000000000 +0300
+++ zipfile.py	2010-11-25 01:39:22.749743303 +0200
@@ -1,6 +1,7 @@
 """
 Read and write ZIP files.
 """
+# Improved by Chortos-2 in 2009 and 2010 (added bzip2 support)
 import struct, os, time, sys, shutil
 import binascii, cStringIO, stat
 
@@ -11,8 +12,13 @@
     zlib = None
     crc32 = binascii.crc32
 
+try:
+    import bz2 # We may need its compression method
+except ImportError:
+    bz2 = None
+
 __all__ = ["BadZipfile", "error", "ZIP_STORED", "ZIP_DEFLATED", "is_zipfile",
-           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile" ]
+           "ZipInfo", "ZipFile", "PyZipFile", "LargeZipFile", "ZIP_BZIP2" ]
 
 class BadZipfile(Exception):
     pass
@@ -33,6 +39,7 @@
 # constants for Zip file compression methods
 ZIP_STORED = 0
 ZIP_DEFLATED = 8
+ZIP_BZIP2 = 12
 # Other ZIP compression methods not supported
 
 # Below are some formats and associated data for reading/writing headers using
@@ -467,6 +474,9 @@
         self.compreadsize = 64*1024
         if self.compress_type == ZIP_DEFLATED:
             self.dc = zlib.decompressobj(-15)
+        elif self.compress_type == ZIP_BZIP2:
+            self.dc = bz2.BZ2Decompressor()
+            self.compreadsize = 900000
 
     def set_univ_newlines(self, univ_newlines):
         self.univ_newlines = univ_newlines
@@ -578,7 +588,7 @@
             if self.compress_type == ZIP_STORED:
                 lr = len(self.readbuffer)
                 bytesToRead = min(bytesToRead, size - lr)
-            elif self.compress_type == ZIP_DEFLATED:
+            else:
                 if len(self.readbuffer) > size:
                     # the user has requested fewer bytes than we've already
                     # pulled through the decompressor; don't read any more
@@ -608,14 +618,17 @@
                     newdata = ''.join(map(self.decrypter, newdata))
 
                 # decompress newly read data if necessary
-                if newdata and self.compress_type == ZIP_DEFLATED:
+                if newdata and self.compress_type != ZIP_STORED:
                     newdata = self.dc.decompress(newdata)
-                    self.rawbuffer = self.dc.unconsumed_tail
+                    self.rawbuffer = self.dc.unconsumed_tail if self.compress_type == ZIP_DEFLATED else ''
                     if self.eof and len(self.rawbuffer) == 0:
                         # we're out of raw bytes (both from the file and
                         # the local buffer); flush just to make sure the
                         # decompressor is done
-                        newdata += self.dc.flush()
+                        try:
+                            newdata += self.dc.flush()
+                        except AttributeError:
+                            pass
                         # prevent decompressor from being used again
                         self.dc = None
 
@@ -641,7 +654,8 @@
     file: Either the path to the file, or a file-like object.
           If it is a path, the file will be opened and closed by ZipFile.
     mode: The mode can be either read "r", write "w" or append "a".
-    compression: ZIP_STORED (no compression) or ZIP_DEFLATED (requires zlib).
+    compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
+                 or ZIP_BZIP2 (requires bz2).
     allowZip64: if True ZipFile will create files with ZIP64 extensions when
                 needed, otherwise it will raise an exception when this would
                 be necessary.
@@ -661,6 +675,10 @@
             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"
         else:
             raise RuntimeError, "That compression method is not supported"
 
@@ -987,7 +1005,10 @@
         if zinfo.compress_type == ZIP_DEFLATED and not zlib:
             raise RuntimeError, \
                   "Compression requires the (missing) zlib module"
-        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED):
+        if zinfo.compress_type == ZIP_BZIP2 and not bz2:
+            raise RuntimeError, \
+                  "Compression requires the (missing) bz2 module"
+        if zinfo.compress_type not in (ZIP_STORED, ZIP_DEFLATED, ZIP_BZIP2):
             raise RuntimeError, \
                   "That compression method is not supported"
         if zinfo.file_size > ZIP64_LIMIT:
@@ -1048,6 +1069,8 @@
         if zinfo.compress_type == ZIP_DEFLATED:
             cmpr = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
                  zlib.DEFLATED, -15)
+        elif zinfo.compress_type == ZIP_BZIP2:
+            cmpr = bz2.BZ2Compressor()
         else:
             cmpr = None
         while 1:
@@ -1105,6 +1128,10 @@
                  zlib.DEFLATED, -15)
             bytes = co.compress(bytes) + co.flush()
             zinfo.compress_size = len(bytes)    # Compressed size
+        elif zinfo.compress_type == ZIP_BZIP2:
+            co = bz2.BZ2Compressor()
+            bytes = co.compress(bytes) + co.flush()
+            zinfo.compress_size = len(bytes)    # Compressed size
         else:
             zinfo.compress_size = zinfo.file_size
         zinfo.header_offset = self.fp.tell()    # Start of header bytes