# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1371256093 -7200
# Node ID ed323a24bde04ea12e8fa000868c70ad18f345c8
# Parent  8f794f5f0ba17e181acb55c030ccc9bd5cde7373
Added an iCalendar parser.

diff -r 8f794f5f0ba1 -r ed323a24bde0 README.txt
--- a/README.txt	Sat Jun 15 02:27:21 2013 +0200
+++ b/README.txt	Sat Jun 15 02:28:13 2013 +0200
@@ -358,6 +358,7 @@
 --------------------------------------------------------------------
 
   * Fixed iCalendar event writing.
+  * Added an iCalendar parser.
 
 New in EventAggregator 0.10.1 (Changes since EventAggregator 0.10)
 ------------------------------------------------------------------
diff -r 8f794f5f0ba1 -r ed323a24bde0 parsers/calendar.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parsers/calendar.py	Sat Jun 15 02:28:13 2013 +0200
@@ -0,0 +1,90 @@
+# -*- coding: iso-8859-1 -*-
+"""
+    MoinMoin - calendar (EventAggregator)
+
+    @copyright: 2012, 2013 by Paul Boddie <paul@boddie.org.uk>
+    @license: GNU GPL (v2 or later), see COPYING.txt for details.
+"""
+
+from MoinSupport import parseAttributes
+from EventAggregatorSupport.Formatting import formatEventsForOutputType
+from EventAggregatorSupport.Types import parseEvents, EventCalendar
+from codecs import getreader
+import vCalendar
+
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from StringIO import StringIO
+
+Dependencies = ["pages"]
+
+# Parser support.
+
+class Parser:
+
+    "Interpret and show calendar information in different ways."
+
+    Dependencies = Dependencies
+    extensions = [".ics"]
+
+    # Input content types understood by this parser.
+
+    input_mimetypes = ["text/calendar"]
+
+    # Output content types preferred by this parser.
+
+    output_mimetypes = ["text/html", "text/calendar"]
+
+    def __init__(self, raw, request, **kw):
+
+        """
+        Initialise the parser with the given 'raw' data, 'request' and any
+        keyword arguments that may have been supplied.
+        """
+
+        self.raw = raw
+        self.request = request
+        attrs = parseAttributes(kw.get("format_args", ""), False)
+
+        self.fragment = attrs.get("fragment")
+
+    def format(self, fmt, write=None):
+
+        """
+        Format a calendar using the given formatter 'fmt'. If the 'write'
+        parameter is specified, use it to write output; otherwise, write output
+        using the request.
+        """
+
+        (write or self.request.write)(fmt.text(self.raw))
+
+    # Extra API methods.
+
+    def formatForOutputType(self, mimetype, write=None):
+
+        """
+        Format a calendar for the given 'mimetype'. If the 'write' parameter is
+        specified, use it to write output; otherwise, write output using the
+        request.
+        """
+
+        # Write raw calendar information unchanged.
+
+        if mimetype == "text/calendar":
+            (write or request.write)(self.raw)
+        else:
+            # Make a Unicode-capable StringIO.
+
+            f = getreader("utf-8")(StringIO(self.raw.encode("utf-8")))
+            calendar = EventCalendar("", vCalendar.parse(f), {})
+            formatEventsForOutputType(calendar.getEvents(), self.request, mimetype, write=write)
+
+    # Class methods.
+
+    def getOutputTypes(self):
+        return self.output_mimetypes
+
+    getOutputTypes = classmethod(getOutputTypes)
+
+# vim: tabstop=4 expandtab shiftwidth=4