Merge email package 4.0 from the sandbox, including documentation, test cases,

and NEWS updates.

Doc/lib/email-unpack.py

@@ -1,59 +1,44 @@
 #!/usr/bin/env python
 
-"""Unpack a MIME message into a directory of files.
+"""Unpack a MIME message into a directory of files."""
 
-Usage: unpackmail [options] msgfile
-
-Options:
-    -h / --help
-        Print this message and exit.
-
-    -d directory
-    --directory=directory
-        Unpack the MIME message into the named directory, which will be
-        created if it doesn't already exist.
-
-msgfile is the path to the file containing the MIME message.
-"""
-
-import sys
 import os
-import getopt
+import sys
+import email
 import errno
 import mimetypes
-import email
 
-
-def usage(code, msg=''):
-    print >> sys.stderr, __doc__
-    if msg:
-        print >> sys.stderr, msg
-    sys.exit(code)
+from optparse import OptionParser
 
 
 def main():
-    try:
-        opts, args = getopt.getopt(sys.argv[1:], 'hd:', ['help', 'directory='])
-    except getopt.error, msg:
-        usage(1, msg)
+    parser = OptionParser(usage="""\
+Unpack a MIME message into a directory of files.
 
-    dir = os.curdir
-    for opt, arg in opts:
-        if opt in ('-h', '--help'):
-            usage(0)
-        elif opt in ('-d', '--directory'):
-            dir = arg
+Usage: %prog [options] msgfile
+""")
+    parser.add_option('-d', '--directory',
+                      type='string', action='store',
+                      help="""Unpack the MIME message into the named
+                      directory, which will be created if it doesn't already
+                      exist.""")
+    opts, args = parser.parse_args()
+    if not opts.directory:
+        parser.print_help()
+        sys.exit(1)
 
     try:
         msgfile = args[0]
     except IndexError:
-        usage(1)
+        parser.print_help()
+        sys.exit(1)
 
     try:
-        os.mkdir(dir)
+        os.mkdir(opts.directory)
     except OSError, e:
         # Ignore directory exists error
-        if e.errno <> errno.EEXIST: raise
+        if e.errno <> errno.EEXIST:
+            raise
 
     fp = open(msgfile)
     msg = email.message_from_file(fp)
@@ -74,8 +59,8 @@ def main():
                 ext = '.bin'
             filename = 'part-%03d%s' % (counter, ext)
         counter += 1
-        fp = open(os.path.join(dir, filename), 'wb')
-        fp.write(part.get_payload(decode=1))
+        fp = open(os.path.join(opts.directory, filename), 'wb')
+        fp.write(part.get_payload(decode=True))
         fp.close()