# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1418081127 -3600
# Node ID 63a1b31f6d0871be494192ffef4e1d99964383f9
# Parent  f196c2c7ab3bebed1d8309bae41709005256b47e
Interpret absent TRANSP values as OPAQUE, preventing an output error.
Added an oversimplistic event listing method.

diff -r f196c2c7ab3b -r 63a1b31f6d08 imip_store.py
--- a/imip_store.py	Tue Dec 09 00:24:14 2014 +0100
+++ b/imip_store.py	Tue Dec 09 00:25:27 2014 +0100
@@ -2,8 +2,8 @@
 
 from datetime import datetime
 from imiptools.config import STORE_DIR, PUBLISH_DIR
-from os.path import abspath, commonprefix, exists, join, split
-from os import chmod, makedirs
+from os.path import abspath, commonprefix, exists, isfile, join, split
+from os import chmod, listdir, makedirs
 from vCalendar import iterwrite
 
 def check_dir(base, dir):
@@ -69,6 +69,16 @@
 
     "A file store of tabular free/busy data and objects."
 
+    def get_events(self, user):
+
+        "Return a list of event identifiers."
+
+        filename = self.get_object_in_store(user)
+        if not filename or not exists(filename):
+            return None
+
+        return [name for name in listdir(filename) if isfile(join(filename, name))]
+
     def get_event(self, user, uid):
 
         "Get the event for the given 'user' with the given 'uid'."
@@ -77,7 +87,7 @@
         if not filename or not exists(filename):
             return None
 
-        return exists(filename) and open(filename) or None
+        return open(filename) or None
 
     def set_event(self, user, uid, node):
 
@@ -152,7 +162,7 @@
         f = open(filename, "w")
         try:
             for item in freebusy:
-                f.write("\t".join(item) + "\n")
+                f.write("\t".join([(value or "OPAQUE") for value in item]) + "\n")
         finally:
             f.close()
             fix_permissions(filename)
@@ -254,7 +264,7 @@
         rwrite(("DTSTAMP", {}, datetime.utcnow().strftime("%Y%m%dT%H%M%SZ")))
 
         for start, end, uid, transp in freebusy:
-            if transp == "OPAQUE":
+            if not transp or transp == "OPAQUE":
                 rwrite(("FREEBUSY", {"FBTYPE" : "BUSY"}, "/".join([start, end])))
 
         f = open(filename, "w")