From 59e4779abc25626cb0ab9fa24ccb3223a00db143 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20v=2E=20L=C3=B6wis?= <martin@v.loewis.de>
Date: Sat, 24 Jan 2009 14:10:07 +0000
Subject: Merged revisions 68885 via svnmerge from
 svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68885 | martin.v.loewis | 2009-01-24 15:00:33 +0100 (Sa, 24 Jan 2009) | 3 lines

  Issue #4710: Extract directories properly in the zipfile module;
  allow adding directories to a zipfile.
........
---
 Lib/test/test_zipfile.py |  26 +++++++++++++++++++++++++-
 Lib/test/zipdir.zip      | Bin 0 -> 374 bytes
 Lib/zipfile.py           |  23 ++++++++++++++++++++---
 Misc/NEWS                |   3 +++
 4 files changed, 48 insertions(+), 4 deletions(-)
 create mode 100644 Lib/test/zipdir.zip

diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
index 678ac9f..3b04ce2 100644
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -9,9 +9,10 @@ from tempfile import TemporaryFile
 from random import randint, random
 
 import test.support as support
-from test.support import TESTFN, run_unittest
+from test.support import TESTFN, run_unittest, findfile
 
 TESTFN2 = TESTFN + "2"
+TESTFNDIR = TESTFN + "d"
 FIXEDTEST_SIZE = 1000
 
 SMALL_TEST_DATA = [('_ziptest1', '1q2w3e4r5t'),
@@ -1000,6 +1001,28 @@ class TestsWithMultipleOpens(unittest.TestCase):
     def tearDown(self):
         os.remove(TESTFN2)
 
+class TestWithDirectory(unittest.TestCase):
+    def setUp(self):
+        os.mkdir(TESTFN2)
+
+    def testExtractDir(self):
+        zipf = zipfile.ZipFile(findfile("zipdir.zip"))
+        zipf.extractall(TESTFN2)
+        self.assertTrue(os.path.isdir(os.path.join(TESTFN2, "a")))
+        self.assertTrue(os.path.isdir(os.path.join(TESTFN2, "a", "b")))
+        self.assertTrue(os.path.exists(os.path.join(TESTFN2, "a", "b", "c")))
+
+    def testStoreDir(self):
+        os.mkdir(os.path.join(TESTFN2, "x"))
+        zipf = zipfile.ZipFile(TESTFN, "w")
+        zipf.write(os.path.join(TESTFN2, "x"), "x")
+        self.assertTrue(zipf.filelist[0].filename.endswith("x/"))
+
+    def tearDown(self):
+        shutil.rmtree(TESTFN2)
+        if os.path.exists(TESTFN):
+            os.remove(TESTFN)
+
 
 class UniversalNewlineTests(unittest.TestCase):
     def setUp(self):
@@ -1114,6 +1137,7 @@ class UniversalNewlineTests(unittest.TestCase):
 def test_main():
     run_unittest(TestsWithSourceFile, TestZip64InSmallFiles, OtherTests,
                  PyZipFileTests, DecryptionTests, TestsWithMultipleOpens,
+                 TestWithDirectory,
                  UniversalNewlineTests, TestsWithRandomBinaryFiles)
 
 if __name__ == "__main__":
diff --git a/Lib/test/zipdir.zip b/Lib/test/zipdir.zip
new file mode 100644
index 0000000..ac21d7a
Binary files /dev/null and b/Lib/test/zipdir.zip differ
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index c67bd5d..a54a354 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -4,7 +4,7 @@ Read and write ZIP files.
 XXX references to utf-8 need further investigation.
 """
 import struct, os, time, sys, shutil
-import binascii, io
+import binascii, io, stat
 
 try:
     import zlib # We may need its compression method
@@ -959,11 +959,11 @@ class ZipFile:
         """
         # build the destination pathname, replacing
         # forward slashes to platform specific separators.
-        if targetpath[-1:] == "/":
+        if targetpath[-1:] in (os.path.sep, os.path.altsep):
             targetpath = targetpath[:-1]
 
         # don't include leading "/" from file name if present
-        if os.path.isabs(member.filename):
+        if member.filename[0] == '/':
             targetpath = os.path.join(targetpath, member.filename[1:])
         else:
             targetpath = os.path.join(targetpath, member.filename)
@@ -975,6 +975,10 @@ class ZipFile:
         if upperdirs and not os.path.exists(upperdirs):
             os.makedirs(upperdirs)
 
+        if member.filename[-1] == '/':
+            os.mkdir(targetpath)
+            return targetpath
+
         source = self.open(member, pwd=pwd)
         target = open(targetpath, "wb")
         shutil.copyfileobj(source, target)
@@ -1014,6 +1018,7 @@ class ZipFile:
                   "Attempt to write to ZIP archive that was already closed")
 
         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
@@ -1022,6 +1027,8 @@ class ZipFile:
         arcname = os.path.normpath(os.path.splitdrive(arcname)[1])
         while arcname[0] in (os.sep, os.altsep):
             arcname = arcname[1:]
+        if isdir:
+            arcname += '/'
         zinfo = ZipInfo(arcname, date_time)
         zinfo.external_attr = (st[0] & 0xFFFF) << 16      # Unix attributes
         if compress_type is None:
@@ -1035,6 +1042,16 @@ class ZipFile:
 
         self._writecheck(zinfo)
         self._didModify = True
+
+        if isdir:
+            zinfo.file_size = 0
+            zinfo.compress_size = 0
+            zinfo.CRC = 0
+            self.filelist.append(zinfo)
+            self.NameToInfo[zinfo.filename] = zinfo
+            self.fp.write(zinfo.FileHeader())
+            return
+
         fp = io.open(filename, "rb")
         # Must overwrite CRC and sizes with correct data later
         zinfo.CRC = CRC = 0
diff --git a/Misc/NEWS b/Misc/NEWS
index cf9e885..9d27971 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -139,6 +139,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #4710: Extract directories properly in the zipfile module;
+  allow adding directories to a zipfile.
+
 - Issue #3807: _multiprocessing build fails when configure is passed 
   --without-threads argument. When this occurs, _multiprocessing will
   be disabled, and not compiled.
-- 
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