Make test_zipfile pass.

The zipfile module now does all I/O in binary mode using bytes.
(Maybe we should support wrapping a TextIOWrapper around it
when text mode reading is requested?)
Even the password is a bytes array now.
Had to fix py_compile.py to use bytes while I was at it.
The _struct needed a patch to support bytes, str8 and str
for the 's' and 'p' formats.

3 files changed, 141 insertions, 140 deletions

diff --git a/Lib/py_compile.py b/Lib/py_compile.py
index 8f44982..bf01296 100644
--- a/Lib/py_compile.py
+++ b/Lib/py_compile.py
@@ -72,10 +72,10 @@ else:
 
 def wr_long(f, x):
     """Internal; write a 32-bit int to a file in little-endian order."""
-    f.write(chr( x        & 0xff))
-    f.write(chr((x >> 8)  & 0xff))
-    f.write(chr((x >> 16) & 0xff))
-    f.write(chr((x >> 24) & 0xff))
+    f.write(bytes([x        & 0xff,
+                   (x >> 8)  & 0xff,
+                   (x >> 16) & 0xff,
+                   (x >> 24) & 0xff]))
 
 def compile(file, cfile=None, dfile=None, doraise=False):
     """Byte-compile one Python source file to Python bytecode.
@@ -133,7 +133,7 @@ def compile(file, cfile=None, dfile=None, doraise=False):
     if cfile is None:
         cfile = file + (__debug__ and 'c' or 'o')
     fc = open(cfile, 'wb')
-    fc.write('\0\0\0\0')
+    fc.write(b'\0\0\0\0')
     wr_long(fc, timestamp)
     marshal.dump(codeobject, fc)
     fc.flush()
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
index 172e230..197170a 100644
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -3,10 +3,8 @@ try:
     import zlib
 except ImportError:
     zlib = None
+import zipfile, os, unittest, sys, shutil, struct, io
 
-import zipfile, os, unittest, sys, shutil, struct
-
-from StringIO import StringIO
 from tempfile import TemporaryFile
 from random import randint, random
 
@@ -18,9 +16,10 @@ FIXEDTEST_SIZE = 10
 
 class TestsWithSourceFile(unittest.TestCase):
     def setUp(self):
-        self.line_gen = ("Zipfile test line %d. random float: %f" % (i, random())
-                          for i in range(FIXEDTEST_SIZE))
-        self.data = '\n'.join(self.line_gen) + '\n'
+        self.line_gen = (bytes("Zipfile test line %d. random float: %f" %
+                               (i, random()))
+                         for i in range(FIXEDTEST_SIZE))
+        self.data = b'\n'.join(self.line_gen) + b'\n'
 
         # Make a source file with some lines
         fp = open(TESTFN, "wb")
@@ -45,14 +44,8 @@ class TestsWithSourceFile(unittest.TestCase):
         self.assertEqual(zipfp.read("strfile"), self.data)
 
         # Print the ZIP directory
-        fp = StringIO()
-        stdout = sys.stdout
-        try:
-            sys.stdout = fp
-
-            zipfp.printdir()
-        finally:
-            sys.stdout = stdout
+        fp = io.StringIO()
+        zipfp.printdir(file=fp)
 
         directory = fp.getvalue()
         lines = directory.splitlines()
@@ -95,7 +88,7 @@ class TestsWithSourceFile(unittest.TestCase):
         zipfp.close()
 
     def testStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipTest(f, zipfile.ZIP_STORED)
 
     def zipOpenTest(self, f, compression):
@@ -119,12 +112,12 @@ class TestsWithSourceFile(unittest.TestCase):
                 break
             zipdata2.append(read_data)
 
-        self.assertEqual(''.join(zipdata1), self.data)
-        self.assertEqual(''.join(zipdata2), self.data)
+        self.assertEqual(b''.join(zipdata1), self.data)
+        self.assertEqual(b''.join(zipdata2), self.data)
         zipfp.close()
 
     def testOpenStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipOpenTest(f, zipfile.ZIP_STORED)
 
     def zipRandomOpenTest(self, f, compression):
@@ -140,11 +133,11 @@ class TestsWithSourceFile(unittest.TestCase):
                 break
             zipdata1.append(read_data)
 
-        self.assertEqual(''.join(zipdata1), self.data)
+        self.assertEqual(b''.join(zipdata1), self.data)
         zipfp.close()
 
     def testRandomOpenStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipRandomOpenTest(f, zipfile.ZIP_STORED)
 
     def zipReadlineTest(self, f, compression):
@@ -181,40 +174,40 @@ class TestsWithSourceFile(unittest.TestCase):
         zipfp.close()
 
     def testReadlineStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipReadlineTest(f, zipfile.ZIP_STORED)
 
     def testReadlinesStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipReadlinesTest(f, zipfile.ZIP_STORED)
 
     def testIterlinesStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipIterlinesTest(f, zipfile.ZIP_STORED)
 
     if zlib:
         def testDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipTest(f, zipfile.ZIP_DEFLATED)
 
         def testOpenDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipOpenTest(f, zipfile.ZIP_DEFLATED)
 
         def testRandomOpenDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipRandomOpenTest(f, zipfile.ZIP_DEFLATED)
 
         def testReadlineDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipReadlineTest(f, zipfile.ZIP_DEFLATED)
 
         def testReadlinesDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipReadlinesTest(f, zipfile.ZIP_DEFLATED)
 
         def testIterlinesDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipIterlinesTest(f, zipfile.ZIP_DEFLATED)
 
         def testLowCompression(self):
@@ -227,8 +220,8 @@ class TestsWithSourceFile(unittest.TestCase):
             # Get an open object for strfile
             zipfp = zipfile.ZipFile(TESTFN2, "r", zipfile.ZIP_DEFLATED)
             openobj = zipfp.open("strfile")
-            self.assertEqual(openobj.read(1), '1')
-            self.assertEqual(openobj.read(1), '2')
+            self.assertEqual(openobj.read(1), b'1')
+            self.assertEqual(openobj.read(1), b'2')
 
     def testAbsoluteArcnames(self):
         zipfp = zipfile.ZipFile(TESTFN2, "w", zipfile.ZIP_STORED)
@@ -251,8 +244,9 @@ class TestZip64InSmallFiles(unittest.TestCase):
         self._limit = zipfile.ZIP64_LIMIT
         zipfile.ZIP64_LIMIT = 5
 
-        line_gen = ("Test of zipfile line %d." % i for i in range(0, FIXEDTEST_SIZE))
-        self.data = '\n'.join(line_gen)
+        line_gen = (bytes("Test of zipfile line %d." % i)
+                    for i in range(0, FIXEDTEST_SIZE))
+        self.data = b'\n'.join(line_gen)
 
         # Make a source file with some lines
         fp = open(TESTFN, "wb")
@@ -272,7 +266,7 @@ class TestZip64InSmallFiles(unittest.TestCase):
         zipfp.close()
 
     def testLargeFileException(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.largeFileExceptionTest(f, zipfile.ZIP_STORED)
             self.largeFileExceptionTest2(f, zipfile.ZIP_STORED)
 
@@ -291,14 +285,8 @@ class TestZip64InSmallFiles(unittest.TestCase):
         self.assertEqual(zipfp.read("strfile"), self.data)
 
         # Print the ZIP directory
-        fp = StringIO()
-        stdout = sys.stdout
-        try:
-            sys.stdout = fp
-
-            zipfp.printdir()
-        finally:
-            sys.stdout = stdout
+        fp = io.StringIO()
+        zipfp.printdir(fp)
 
         directory = fp.getvalue()
         lines = directory.splitlines()
@@ -343,13 +331,13 @@ class TestZip64InSmallFiles(unittest.TestCase):
         zipfp.close()
 
     def testStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipTest(f, zipfile.ZIP_STORED)
 
 
     if zlib:
         def testDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.zipTest(f, zipfile.ZIP_DEFLATED)
 
     def testAbsoluteArcnames(self):
@@ -440,7 +428,7 @@ class OtherTests(unittest.TestCase):
             os.unlink(TESTFN)
 
         filename = 'testfile.txt'
-        content = 'hello, world. this is some content.'
+        content = b'hello, world. this is some content.'
 
         try:
             zf = zipfile.ZipFile(TESTFN, 'a')
@@ -483,7 +471,7 @@ class OtherTests(unittest.TestCase):
         # This test checks that the is_zipfile function correctly identifies
         # a file that is a zip file
         zipf = zipfile.ZipFile(TESTFN, mode="w")
-        zipf.writestr("foo.txt", "O, for a Muse of Fire!")
+        zipf.writestr("foo.txt", b"O, for a Muse of Fire!")
         zipf.close()
         chk = zipfile.is_zipfile(TESTFN)
         self.assert_(chk is True)
@@ -504,7 +492,7 @@ class OtherTests(unittest.TestCase):
 
     def testClosedZipRaisesRuntimeError(self):
         # Verify that testzip() doesn't swallow inappropriate exceptions.
-        data = StringIO()
+        data = io.BytesIO()
         zipf = zipfile.ZipFile(data, mode="w")
         zipf.writestr("foo.txt", "O, for a Muse of Fire!")
         zipf.close()
@@ -525,15 +513,15 @@ class DecryptionTests(unittest.TestCase):
     # ZIP file
 
     data = (
-    'PK\x03\x04\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00\x1a\x00'
-    '\x00\x00\x08\x00\x00\x00test.txt\xfa\x10\xa0gly|\xfa-\xc5\xc0=\xf9y'
-    '\x18\xe0\xa8r\xb3Z}Lg\xbc\xae\xf9|\x9b\x19\xe4\x8b\xba\xbb)\x8c\xb0\xdbl'
-    'PK\x01\x02\x14\x00\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00'
-    '\x1a\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00 \x00\xb6\x81'
-    '\x00\x00\x00\x00test.txtPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x006\x00'
-    '\x00\x00L\x00\x00\x00\x00\x00' )
+    b'PK\x03\x04\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00\x1a\x00'
+    b'\x00\x00\x08\x00\x00\x00test.txt\xfa\x10\xa0gly|\xfa-\xc5\xc0=\xf9y'
+    b'\x18\xe0\xa8r\xb3Z}Lg\xbc\xae\xf9|\x9b\x19\xe4\x8b\xba\xbb)\x8c\xb0\xdbl'
+    b'PK\x01\x02\x14\x00\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00'
+    b'\x1a\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00 \x00\xb6\x81'
+    b'\x00\x00\x00\x00test.txtPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x006\x00'
+    b'\x00\x00L\x00\x00\x00\x00\x00' )
 
-    plain = 'zipfile.py encryption test'
+    plain = b'zipfile.py encryption test'
 
     def setUp(self):
         fp = open(TESTFN, "wb")
@@ -551,18 +539,19 @@ class DecryptionTests(unittest.TestCase):
         self.assertRaises(RuntimeError, self.zip.read, "test.txt")
 
     def testBadPassword(self):
-        self.zip.setpassword("perl")
+        self.zip.setpassword(b"perl")
         self.assertRaises(RuntimeError, self.zip.read, "test.txt")
 
     def testGoodPassword(self):
-        self.zip.setpassword("python")
+        self.zip.setpassword(b"python")
         self.assertEquals(self.zip.read("test.txt"), self.plain)
 
 
 class TestsWithRandomBinaryFiles(unittest.TestCase):
     def setUp(self):
         datacount = randint(16, 64)*1024 + randint(1, 1024)
-        self.data = ''.join((struct.pack('<f', random()*randint(-1000, 1000)) for i in range(datacount)))
+        self.data = b''.join(struct.pack('<f', random()*randint(-1000, 1000))
+                             for i in range(datacount))
 
         # Make a source file with some lines
         fp = open(TESTFN, "wb")
@@ -592,7 +581,7 @@ class TestsWithRandomBinaryFiles(unittest.TestCase):
         zipfp.close()
 
     def testStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipTest(f, zipfile.ZIP_STORED)
 
     def zipOpenTest(self, f, compression):
@@ -616,17 +605,17 @@ class TestsWithRandomBinaryFiles(unittest.TestCase):
                 break
             zipdata2.append(read_data)
 
-        testdata1 = ''.join(zipdata1)
+        testdata1 = b''.join(zipdata1)
         self.assertEqual(len(testdata1), len(self.data))
         self.assertEqual(testdata1, self.data)
 
-        testdata2 = ''.join(zipdata2)
+        testdata2 = b''.join(zipdata2)
         self.assertEqual(len(testdata1), len(self.data))
         self.assertEqual(testdata1, self.data)
         zipfp.close()
 
     def testOpenStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipOpenTest(f, zipfile.ZIP_STORED)
 
     def zipRandomOpenTest(self, f, compression):
@@ -642,13 +631,13 @@ class TestsWithRandomBinaryFiles(unittest.TestCase):
                 break
             zipdata1.append(read_data)
 
-        testdata = ''.join(zipdata1)
+        testdata = b''.join(zipdata1)
         self.assertEqual(len(testdata), len(self.data))
         self.assertEqual(testdata, self.data)
         zipfp.close()
 
     def testRandomOpenStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.zipRandomOpenTest(f, zipfile.ZIP_STORED)
 
 class TestsWithMultipleOpens(unittest.TestCase):
@@ -682,8 +671,8 @@ class TestsWithMultipleOpens(unittest.TestCase):
         data2 = zopen2.read(500)
         data1 += zopen1.read(500)
         data2 += zopen2.read(500)
-        self.assertEqual(data1, '1'*FIXEDTEST_SIZE)
-        self.assertEqual(data2, '2'*FIXEDTEST_SIZE)
+        self.assertEqual(data1, b'1'*FIXEDTEST_SIZE)
+        self.assertEqual(data2, b'2'*FIXEDTEST_SIZE)
         zipf.close()
 
     def testInterleaved(self):
@@ -696,8 +685,8 @@ class TestsWithMultipleOpens(unittest.TestCase):
         data2 = zopen2.read(500)
         data1 += zopen1.read(500)
         data2 += zopen2.read(500)
-        self.assertEqual(data1, '1'*FIXEDTEST_SIZE)
-        self.assertEqual(data2, '2'*FIXEDTEST_SIZE)
+        self.assertEqual(data1, b'1'*FIXEDTEST_SIZE)
+        self.assertEqual(data2, b'2'*FIXEDTEST_SIZE)
         zipf.close()
 
     def tearDown(self):
@@ -706,13 +695,19 @@ class TestsWithMultipleOpens(unittest.TestCase):
 
 class UniversalNewlineTests(unittest.TestCase):
     def setUp(self):
-        self.line_gen = ["Test of zipfile line %d." % i for i in range(FIXEDTEST_SIZE)]
+        self.line_gen = [bytes("Test of zipfile line %d." % i)
+                         for i in range(FIXEDTEST_SIZE)]
         self.seps = ('\r', '\r\n', '\n')
         self.arcdata, self.arcfiles = {}, {}
         for n, s in enumerate(self.seps):
-            self.arcdata[s] = s.join(self.line_gen) + s
+            b = s.encode("ascii")
+            self.arcdata[s] = b.join(self.line_gen) + b
             self.arcfiles[s] = '%s-%d' % (TESTFN, n)
-            file(self.arcfiles[s], "wb").write(self.arcdata[s])
+            f = open(self.arcfiles[s], "wb")
+            try:
+                f.write(self.arcdata[s])
+            finally:
+                f.close()
 
     def makeTestArchive(self, f, compression):
         # Create the ZIP archive
@@ -741,7 +736,7 @@ class UniversalNewlineTests(unittest.TestCase):
             zipopen = zipfp.open(fn, "rU")
             for line in self.line_gen:
                 linedata = zipopen.readline()
-                self.assertEqual(linedata, line + '\n')
+                self.assertEqual(linedata, line + b'\n')
 
         zipfp.close()
 
@@ -753,7 +748,7 @@ class UniversalNewlineTests(unittest.TestCase):
         for sep, fn in self.arcfiles.items():
             ziplines = zipfp.open(fn, "rU").readlines()
             for line, zipline in zip(self.line_gen, ziplines):
-                self.assertEqual(zipline, line + '\n')
+                self.assertEqual(zipline, line + b'\n')
 
         zipfp.close()
 
@@ -764,41 +759,41 @@ class UniversalNewlineTests(unittest.TestCase):
         zipfp = zipfile.ZipFile(f, "r")
         for sep, fn in self.arcfiles.items():
             for line, zipline in zip(self.line_gen, zipfp.open(fn, "rU")):
-                self.assertEqual(zipline, line + '\n')
+                self.assertEqual(zipline, line + b'\n')
 
         zipfp.close()
 
     def testReadStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.readTest(f, zipfile.ZIP_STORED)
 
     def testReadlineStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.readlineTest(f, zipfile.ZIP_STORED)
 
     def testReadlinesStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.readlinesTest(f, zipfile.ZIP_STORED)
 
     def testIterlinesStored(self):
-        for f in (TESTFN2, TemporaryFile(), StringIO()):
+        for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
             self.iterlinesTest(f, zipfile.ZIP_STORED)
 
     if zlib:
         def testReadDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.readTest(f, zipfile.ZIP_DEFLATED)
 
         def testReadlineDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.readlineTest(f, zipfile.ZIP_DEFLATED)
 
         def testReadlinesDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.readlinesTest(f, zipfile.ZIP_DEFLATED)
 
         def testIterlinesDeflated(self):
-            for f in (TESTFN2, TemporaryFile(), StringIO()):
+            for f in (TESTFN2, TemporaryFile(), io.BytesIO()):
                 self.iterlinesTest(f, zipfile.ZIP_DEFLATED)
 
     def tearDown(self):
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 1e180fc..6cff722 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1,5 +1,7 @@
 """
 Read and write ZIP files.
+
+XXX references to utf-8 need further investigation.
 """
 import struct, os, time, sys
 import binascii, io
@@ -33,15 +35,15 @@ ZIP_DEFLATED = 8
 
 # Here are some struct module formats for reading headers
 structEndArchive = "<4s4H2lH"     # 9 items, end of archive, 22 bytes
-stringEndArchive = "PK\005\006"   # magic number for end of archive record
+stringEndArchive = b"PK\005\006"   # magic number for end of archive record
 structCentralDir = "<4s4B4HlLL5HLl"# 19 items, central directory, 46 bytes
-stringCentralDir = "PK\001\002"   # magic number for central directory
+stringCentralDir = b"PK\001\002"   # magic number for central directory
 structFileHeader = "<4s2B4HlLL2H"  # 12 items, file header record, 30 bytes
-stringFileHeader = "PK\003\004"   # magic number for file header
+stringFileHeader = b"PK\003\004"   # magic number for file header
 structEndArchive64Locator = "<4slql" # 4 items, locate Zip64 header, 20 bytes
-stringEndArchive64Locator = "PK\x06\x07" # magic token for locator header
+stringEndArchive64Locator = b"PK\x06\x07" # magic token for locator header
 structEndArchive64 = "<4sqhhllqqqq" # 10 items, end of archive (Zip64), 56 bytes
-stringEndArchive64 = "PK\x06\x06" # magic token for Zip64 header
+stringEndArchive64 = b"PK\x06\x06" # magic token for Zip64 header
 
 
 # indexes of entries in the central directory structure
@@ -82,7 +84,7 @@ _FH_EXTRA_FIELD_LENGTH = 11
 def is_zipfile(filename):
     """Quickly see if file is a ZIP file by checking the magic number."""
     try:
-        fpin = open(filename, "rb")
+        fpin = io.open(filename, "rb")
         endrec = _EndRecData(fpin)
         fpin.close()
         if endrec:
@@ -206,8 +208,8 @@ class ZipInfo (object):
         self.date_time = date_time      # year, month, day, hour, min, sec
         # Standard values:
         self.compress_type = ZIP_STORED # Type of compression for the file
-        self.comment = ""               # Comment for each file
-        self.extra = ""                 # ZIP extra data
+        self.comment = b""              # Comment for each file
+        self.extra = b""                # ZIP extra data
         if sys.platform == 'win32':
             self.create_system = 0          # System which created ZIP archive
         else:
@@ -257,7 +259,7 @@ class ZipInfo (object):
                  self.compress_type, dostime, dosdate, CRC,
                  compress_size, file_size,
                  len(self.filename), len(extra))
-        return header + self.filename + extra
+        return header + self.filename.encode("utf-8") + extra
 
     def _decodeExtra(self):
         # Try to decode the extra field.
@@ -331,7 +333,7 @@ class _ZipDecrypter:
 
     def _crc32(self, ch, crc):
         """Compute the CRC32 primitive on one byte."""
-        return ((crc >> 8) & 0xffffff) ^ self.crctable[(crc ^ ord(ch)) & 0xff]
+        return ((crc >> 8) & 0xffffff) ^ self.crctable[(crc ^ ch) & 0xff]
 
     def __init__(self, pwd):
         self.key0 = 305419896
@@ -344,20 +346,13 @@ class _ZipDecrypter:
         self.key0 = self._crc32(c, self.key0)
         self.key1 = (self.key1 + (self.key0 & 255)) & 4294967295
         self.key1 = (self.key1 * 134775813 + 1) & 4294967295
-        self.key2 = self._crc32(chr((self.key1 >> 24) & 255), self.key2)
+        self.key2 = self._crc32((self.key1 >> 24) & 255, self.key2)
 
     def __call__(self, c):
         """Decrypt a single character."""
-        # XXX When this is called with a byte instead of a char, ord()
-        # isn't needed.  Don't die in that case.  In the future we should
-        # just leave this out, once we're always using bytes.
-        try:
-            c = ord(c)
-        except TypeError:
-            pass
+        assert isinstance(c, int)
         k = self.key2 | 2
         c = c ^ (((k * (k^1)) >> 8) & 255)
-        c = chr(c)
         self._UpdateKeys(c)
         return c
 
@@ -370,13 +365,13 @@ class ZipExtFile:
         self.fileobj = fileobj
         self.decrypter = decrypt
         self.bytes_read = 0
-        self.rawbuffer = ''
-        self.readbuffer = ''
-        self.linebuffer = ''
+        self.rawbuffer = b''
+        self.readbuffer = b''
+        self.linebuffer = b''
         self.eof = False
         self.univ_newlines = False
-        self.nlSeps = ("\n", )
-        self.lastdiscard = ''
+        self.nlSeps = (b"\n", )
+        self.lastdiscard = b''
 
         self.compress_type = zipinfo.compress_type
         self.compress_size = zipinfo.compress_size
@@ -394,9 +389,9 @@ class ZipExtFile:
         self.univ_newlines = univ_newlines
 
         # pick line separator char(s) based on universal newlines flag
-        self.nlSeps = ("\n", )
+        self.nlSeps = (b"\n", )
         if self.univ_newlines:
-            self.nlSeps = ("\r\n", "\r", "\n")
+            self.nlSeps = (b"\r\n", b"\r", b"\n")
 
     def __iter__(self):
         return self
@@ -417,7 +412,7 @@ class ZipExtFile:
             # ugly check for cases where half of an \r\n pair was
             # read on the last pass, and the \r was discarded.  In this
             # case we just throw away the \n at the start of the buffer.
-            if (self.lastdiscard, self.linebuffer[0]) == ('\r','\n'):
+            if (self.lastdiscard, self.linebuffer[0]) == (b'\r', b'\n'):
                 self.linebuffer = self.linebuffer[1:]
 
             for sep in self.nlSeps:
@@ -435,7 +430,7 @@ class ZipExtFile:
         if size < 0:
             size = sys.maxint
         elif size == 0:
-            return ''
+            return b''
 
         # check for a newline already in buffer
         nl, nllen = self._checkfornewline()
@@ -461,7 +456,7 @@ class ZipExtFile:
             # so return current buffer
             if nl < 0:
                 s = self.linebuffer
-                self.linebuffer = ''
+                self.linebuffer = b''
                 return s
 
         buf = self.linebuffer[:nl]
@@ -470,7 +465,7 @@ class ZipExtFile:
 
         # line is always returned with \n as newline char (except possibly
         # for a final incomplete line in the file, which is handled above).
-        return buf + "\n"
+        return buf + b"\n"
 
     def readlines(self, sizehint = -1):
         """Return a list with all (following) lines. The sizehint parameter
@@ -516,18 +511,23 @@ class ZipExtFile:
 
         # try to read from file (if necessary)
         if bytesToRead > 0:
-            bytes = self.fileobj.read(bytesToRead)
-            self.bytes_read += len(bytes)
-            self.rawbuffer += bytes
+            data = self.fileobj.read(bytesToRead)
+            self.bytes_read += len(data)
+            try:
+                self.rawbuffer += data
+            except:
+                print(repr(self.fileobj), repr(self.rawbuffer),
+                      repr(data))
+                raise
 
             # handle contents of raw buffer
             if self.rawbuffer:
                 newdata = self.rawbuffer
-                self.rawbuffer = ''
+                self.rawbuffer = b''
 
                 # decrypt new data if we were given an object to handle that
                 if newdata and self.decrypter is not None:
-                    newdata = ''.join(map(self.decrypter, newdata))
+                    newdata = bytes(map(self.decrypter, newdata))
 
                 # decompress newly read data if necessary
                 if newdata and self.compress_type == ZIP_DEFLATED:
@@ -546,13 +546,13 @@ class ZipExtFile:
 
         # return what the user asked for
         if size is None or len(self.readbuffer) <= size:
-            bytes = self.readbuffer
-            self.readbuffer = ''
+            data = self.readbuffer
+            self.readbuffer = b''
         else:
-            bytes = self.readbuffer[:size]
+            data = self.readbuffer[:size]
             self.readbuffer = self.readbuffer[size:]
 
-        return bytes
+        return data
 
 
 class ZipFile:
@@ -593,15 +593,16 @@ class ZipFile:
 
         # Check if we were passed a file-like object
         if isinstance(file, basestring):
+            # No, it's a filename
             self._filePassed = 0
             self.filename = file
             modeDict = {'r' : 'rb', 'w': 'wb', 'a' : 'r+b'}
             try:
-                self.fp = open(file, modeDict[mode])
+                self.fp = io.open(file, modeDict[mode])
             except IOError:
                 if mode == 'a':
                     mode = key = 'w'
-                    self.fp = open(file, modeDict[mode])
+                    self.fp = io.open(file, modeDict[mode])
                 else:
                     raise
         else:
@@ -661,7 +662,7 @@ class ZipFile:
         self.start_dir = offset_cd + concat
         fp.seek(self.start_dir, 0)
         data = fp.read(size_cd)
-        fp = io.StringIO(data)
+        fp = io.BytesIO(data)
         total = 0
         while total < size_cd:
             centdir = fp.read(46)
@@ -673,7 +674,7 @@ class ZipFile:
                 print(centdir)
             filename = fp.read(centdir[_CD_FILENAME_LENGTH])
             # Create ZipInfo instance to store file information
-            x = ZipInfo(filename)
+            x = ZipInfo(str(filename))
             x.extra = fp.read(centdir[_CD_EXTRA_FIELD_LENGTH])
             x.comment = fp.read(centdir[_CD_COMMENT_LENGTH])
             total = (total + centdir[_CD_FILENAME_LENGTH]
@@ -708,12 +709,16 @@ class ZipFile:
         archive."""
         return self.filelist
 
-    def printdir(self):
+    def printdir(self, file=None):
         """Print a table of contents for the zip file."""
-        print("%-46s %19s %12s" % ("File Name", "Modified    ", "Size"))
+        if file is None:
+            file = sys.stdout
+        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
-            print("%-46s %s %12d" % (zinfo.filename, date, zinfo.file_size))
+            print("%-46s %s %12d" % (zinfo.filename, date, zinfo.file_size),
+                  file=file)
 
     def testzip(self):
         """Read all the files and check the CRC."""
@@ -730,6 +735,7 @@ class ZipFile:
 
     def setpassword(self, pwd):
         """Set default password for encrypted files."""
+        assert isinstance(pwd, bytes)
         self.pwd = pwd
 
     def read(self, name, pwd=None):
@@ -749,7 +755,7 @@ class ZipFile:
         if self._filePassed:
             zef_file = self.fp
         else:
-            zef_file = open(self.filename, 'rb')
+            zef_file = io.open(self.filename, 'rb')
 
         # Get info object for name
         zinfo = self.getinfo(name)
@@ -768,9 +774,9 @@ class ZipFile:
         if fheader[_FH_EXTRA_FIELD_LENGTH]:
             zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
 
-        if fname != zinfo.orig_filename:
+        if fname != zinfo.orig_filename.encode("utf-8"):
             raise BadZipfile, \
-                      'File name in directory "%s" and header "%s" differ.' % (
+                      'File name in directory %r and header %r differ.' % (
                           zinfo.orig_filename, fname)
 
         # check for encrypted flag & handle password
@@ -790,7 +796,7 @@ class ZipFile:
             #  and is used to check the correctness of the password.
             bytes = zef_file.read(12)
             h = map(zd, bytes[0:12])
-            if ord(h[11]) != ((zinfo.CRC>>24)&255):
+            if h[11] != ((zinfo.CRC>>24) & 255):
                 raise RuntimeError, "Bad password for file %s" % name
 
         # build and return a ZipExtFile
@@ -852,7 +858,7 @@ class ZipFile:
 
         self._writecheck(zinfo)
         self._didModify = True
-        fp = open(filename, "rb")
+        fp = io.open(filename, "rb")
         # Must overwrite CRC and sizes with correct data later
         zinfo.CRC = CRC = 0
         zinfo.compress_size = compress_size = 0
@@ -982,7 +988,7 @@ class ZipFile:
                   0, zinfo.internal_attr, zinfo.external_attr,
                   header_offset)
                 self.fp.write(centdir)
-                self.fp.write(zinfo.filename)
+                self.fp.write(zinfo.filename.encode("utf-8"))
                 self.fp.write(extra_data)
                 self.fp.write(zinfo.comment)
 
@@ -1163,7 +1169,7 @@ def main(args = None):
             tgtdir = os.path.dirname(tgt)
             if not os.path.exists(tgtdir):
                 os.makedirs(tgtdir)
-            fp = open(tgt, 'wb')
+            fp = io.open(tgt, 'wb')
             fp.write(zf.read(path))
             fp.close()
         zf.close()