Issue #26039: Added zipfile.ZipInfo.from_file() and zipinfo.ZipInfo.is_dir().
Patch by Thomas Kluyver.
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 56a2479..e0598d2 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -371,7 +371,7 @@
result.append(' filemode=%r' % stat.filemode(hi))
if lo:
result.append(' external_attr=%#x' % lo)
- isdir = self.filename[-1:] == '/'
+ isdir = self.is_dir()
if not isdir or self.file_size:
result.append(' file_size=%r' % self.file_size)
if ((not isdir or self.compress_size) and
@@ -469,6 +469,41 @@
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).
+ """
+ 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 self.filename[-1] == '/'
+
class _ZipDecrypter:
"""Class to handle decryption of files stored within a ZIP archive.
@@ -1389,7 +1424,7 @@
if upperdirs and not os.path.exists(upperdirs):
os.makedirs(upperdirs)
- if member.filename[-1] == '/':
+ if member.is_dir():
if not os.path.isdir(targetpath):
os.mkdir(targetpath)
return targetpath
@@ -1430,29 +1465,17 @@
raise RuntimeError(
"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
- 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 = ZipInfo(arcname, date_time)
- zinfo.external_attr = (st[0] & 0xFFFF) << 16 # Unix attributes
- if isdir:
- zinfo.compress_type = ZIP_STORED
- elif compress_type is None:
- zinfo.compress_type = self.compression
- else:
- zinfo.compress_type = compress_type
+ zinfo = ZipInfo.from_file(filename, arcname)
- zinfo.file_size = st.st_size
- zinfo.flag_bits = 0x00
+ 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
+
with self._lock:
if self._seekable:
self.fp.seek(self.start_dir)
@@ -1464,11 +1487,7 @@
self._writecheck(zinfo)
self._didModify = True
- if isdir:
- zinfo.file_size = 0
- zinfo.compress_size = 0
- zinfo.CRC = 0
- zinfo.external_attr |= 0x10 # MS-DOS directory flag
+ if zinfo.is_dir():
self.filelist.append(zinfo)
self.NameToInfo[zinfo.filename] = zinfo
self.fp.write(zinfo.FileHeader(False))