# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1366920896 -7200
# Node ID 65eb8957f696ee4c0e4e5d6b9e40d44c8da396c5
# Parent  92ec5d7be0b56490fa202da2aadfdca133aebd55
Added support for multiple property values, producing lists for collections of
such values when parsing, and accepting lists of such values when writing.

diff -r 92ec5d7be0b5 -r 65eb8957f696 README.txt
--- a/README.txt	Thu Apr 25 22:11:23 2013 +0200
+++ b/README.txt	Thu Apr 25 22:14:56 2013 +0200
@@ -34,3 +34,6 @@
   * Added support for writing resources through a specific write method
     instead of using a stream, thus changing the iterwrite function's
     signature.
+  * Added support for multiple property values, producing lists for
+    collections of such values when parsing, and accepting lists of such
+    values when writing.
diff -r 92ec5d7be0b5 -r 65eb8957f696 tests/test.ics
--- a/tests/test.ics	Thu Apr 25 22:11:23 2013 +0200
+++ b/tests/test.ics	Thu Apr 25 22:14:56 2013 +0200
@@ -13,6 +13,7 @@
 SUMMARY:Testing
 DTSTART;TZID=CEST:20081018T150000
 DTEND;TZID=CEST:20081018T153000
+RDATE;VALUE=DATE:20081025,20081101
 LOCATION:Oslo\, Norway
 END:VEVENT
 END:VCALENDAR
diff -r 92ec5d7be0b5 -r 65eb8957f696 vCalendar.py
--- a/vCalendar.py	Thu Apr 25 22:11:23 2013 +0200
+++ b/vCalendar.py	Thu Apr 25 22:14:56 2013 +0200
@@ -32,6 +32,7 @@
 """
 
 import vContent
+import re
 
 try:
     set
@@ -48,6 +49,8 @@
     ])
 QUOTED_TYPES = set(["URI"])
 
+unquoted_comma_regexp = re.compile(r"(?<!\\),")
+
 # Parser classes.
 
 class vCalendarStreamParser(vContent.StreamParser):
@@ -66,6 +69,15 @@
 
     def decode_content(self, value):
 
+        """
+        Decode the given 'value' (which may represent a collection of distinct
+        values), replacing quoted separator characters.
+        """
+
+        return [self.decode_content_value(v) for v in unquoted_comma_regexp.split(value)]
+
+    def decode_content_value(self, value):
+
         "Decode the given 'value', replacing quoted separator characters."
 
         # Replace quoted characters (see 4.3.11 in RFC 2445).
@@ -141,6 +153,18 @@
 
     def encode_content(self, value):
 
+        """
+        Encode the given 'value' (which may be a list or tuple of separate
+        values), quoting characters and separating collections of values.
+        """
+
+        if not isinstance(value, (list, tuple)):
+            value = [value]
+
+        return ",".join([self.encode_content_value(v) for v in value])
+
+    def encode_content_value(self, value):
+
         "Encode the given 'value', quoting characters."
 
         # Replace quoted characters (see 4.3.11 in RFC 2445).