Initial upload.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@13639 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Tool/ContributionOpener.py

+##############################################################################
+#
+# Copyright (c) 2007 Nexedi SARL and Contributors. All Rights Reserved.
+#                    Jean-Paul Smets <jp@nexedi.com>
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the Python Software Foundation License (PSFL)
+#
+##############################################################################
+
+import urllib2, os, dircache
+from StringIO import StringIO
+from urllib2 import FileHandler, url2pathname, mimetypes, mimetools, addinfourl, URLError
+
+class DirectoryFileHandler(FileHandler):
+    """
+    Extends the file handler to provide an HTML
+    representation of local directories. 
+    """
+
+    # Use local file or FTP depending on form of URL
+    def file_open(self, req):
+        url = req.get_selector()
+        if url[:2] == '//' and url[2:3] != '/':
+            req.type = 'ftp'
+            return self.parent.open(req)
+        else:
+            return self.open_local_file(req)
+
+    # not entirely sure what the rules are here
+    def open_local_file(self, req):
+        import email.Utils
+        host = req.get_host()
+        file = req.get_selector()
+        localfile = url2pathname(file)
+        stats = os.stat(localfile)
+        size = stats.st_size
+        modified = email.Utils.formatdate(stats.st_mtime, usegmt=True)
+        mtype = mimetypes.guess_type(file)[0]
+        headers = mimetools.Message(StringIO(
+            'Content-type: %s\nContent-length: %d\nLast-modified: %s\n' %
+            (mtype or 'text/plain', size, modified)))
+        if host:
+            host, port = splitport(host)
+        if not host or \
+           (not port and socket.gethostbyname(host) in self.get_names()):
+            try:
+              file_list = dircache.listdir(localfile)
+              s = StringIO()
+              for f in file_list:
+                s.write('<p><a href="%s">%s</a></p>\n' % (f, f))
+              s.seek(0)
+              headers = mimetools.Message(StringIO(
+                  'Content-type: %s\nContent-length: %d\nLast-modified: %s\n' %
+                  ('text/html', size, modified)))
+              return addinfourl(s, headers, 'file:' + file)
+            except OSError:
+              return addinfourl(open(localfile, 'rb'),
+                                headers, 'file:'+file)
+        raise URLError('file not on local host')