From 310e82772849bf8e3d3ef9f7129fe0cf9ea19c5e Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Mon, 20 Dec 2010 15:44:15 +0000
Subject: [PATCH] MediaWiki preprocessor for embeding of images

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@4108 fd906abe-77d9-0310-91a1-e0d9ade77398
---
 wiki/browser/media.pt     |  2 +-
 wiki/preproc/README.txt   | 16 ++++++++++++++--
 wiki/preproc/mediawiki.py | 30 ++++++++++++++++++++----------
 3 files changed, 35 insertions(+), 13 deletions(-)

diff --git a/wiki/browser/media.pt b/wiki/browser/media.pt
index c2bd044..e6da820 100644
--- a/wiki/browser/media.pt
+++ b/wiki/browser/media.pt
@@ -19,7 +19,7 @@
                  condition="objects">
       <h2 i18n:translate="">Media Objects</h2>
       <div tal:repeat="obj objects">
-        <a tal:attributes="href obj/absolute_url"
+        <a tal:attributes="href string:${obj/absolute_url}/@@view"
            tal:content="obj/title" />
       </div>
     </tal:listing>
diff --git a/wiki/preproc/README.txt b/wiki/preproc/README.txt
index c0a038a..d973a04 100644
--- a/wiki/preproc/README.txt
+++ b/wiki/preproc/README.txt
@@ -5,13 +5,25 @@ Standard Wiki Pre-processors
   ($Id$)
 
 
-MediaWiki Links
-===============
+MediaWiki Formatting
+====================
 
   >>> from cybertools.wiki.preproc.mediawiki import preprocess
 
+Links
+-----
+
   >>> src = '''Some text with [[a link]] and
   ... [[link2 | another link]] with separate text.'''
 
   >>> preprocess(src)
   'Some text with `a link <a link>`__ and\n`another link <link2>`__ with separate text.'
+
+Embedding of Images
+-------------------
+
+  >>> src = '''[[image:media01.jpg]]'''
+
+  >>> print preprocess(src)
+  .. image:: media01.jpg
+
diff --git a/wiki/preproc/mediawiki.py b/wiki/preproc/mediawiki.py
index 166f8f8..ddc107a 100644
--- a/wiki/preproc/mediawiki.py
+++ b/wiki/preproc/mediawiki.py
@@ -28,16 +28,26 @@ import re
 linkPattern = re.compile(r'\[\[(.+)\]\]')
 
 
-def createRstxLink(match):
-    value = match.group(1)
-    parts = value.split('|')
-    text = name = parts[0].strip()
-    if len(parts) > 1:
-        text = parts[-1].strip()
-    return '`%s <%s>`__' % (text, name)
-
-
 def preprocess(source):
-    result = linkPattern.sub(createRstxLink, source)
+    result = linkPattern.sub(processLinkPattern, source)
     return result
 
+
+def processLinkPattern(match):
+    value = match.group(1)
+    parts = value.split('|')
+    name = parts.pop(0).strip()
+    if ':' in name:
+        prefix, name = name.split(':', 1)
+        return createRstxImage(name, parts, prefix)
+    else:
+        return createRstxLink(name, parts)
+
+def createRstxLink(name, parts, prefix=None):
+    text = parts and parts[-1].strip() or name
+    return '`%s <%s>`__' % (text, name)
+
+def createRstxImage(name, parts, prefix=None):
+    return '\n\n.. image:: %s\n\n' % name
+
+