From 3dd9bdbe36c007632b7b086472b8c18dabcce34d Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Mon, 9 Mar 2009 13:42:10 +0000
Subject: [PATCH] handle URI fragment and parameters

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3268 fd906abe-77d9-0310-91a1-e0d9ade77398
---
 wiki/README.txt   | 54 +++++++++++++++++++++++++++++++++++++++--------
 wiki/base/link.py | 40 ++++++++++++++++++++++++++++-------
 2 files changed, 77 insertions(+), 17 deletions(-)

diff --git a/wiki/README.txt b/wiki/README.txt
index bab221e..d673f7a 100644
--- a/wiki/README.txt
+++ b/wiki/README.txt
@@ -71,6 +71,9 @@ from the page content.
 Links to not yet existing pages
 -------------------------------
 
+When a referenced page does not exist yet a special link is created that
+should lead to a view that will create the page.
+
   >>> aboutPage.text += '''
   ... `More... <more>`_
   ... '''
@@ -80,11 +83,42 @@ Links to not yet existing pages
   <p><a class="reference"
         href="http://127.0.0.1/demo_wiki/start_page">Back to the Start Page</a></p>
   <p><a class="reference create"
-        href="http://127.0.0.1/demo_wiki/create.html?linkid=0000002">?More...</a></p>
+        href="http://127.0.0.1/demo_wiki/create.html?name=more">?More...</a></p>
+
+Again a link object has been created that will be reused for subsequent
+rendering operations.
 
   >>> len(links)
   2
 
+  >>> print aboutPage.render(TestRequest())
+  <p>...
+  <p><a class="reference create"
+        href="http://127.0.0.1/demo_wiki/create.html?name=more">?More...</a></p>
+  >>> len(links)
+  2
+
+Links with fragments (anchor references) and parameters
+-------------------------------------------------------
+
+  >>> referencePage = wiki.createPage('reference')
+  >>> referencePage.text = '''
+  ... References
+  ... ==========
+  ...
+  ... - `About content <about#content?language=en>`_
+  ... - `More content <more#content?language=en>`_
+  ... '''
+
+  >>> print referencePage.render(TestRequest())
+  <h1 class="title">References</h1>
+  <ul class="simple">
+  <li><a class="reference"
+         href="http://127.0.0.1/demo_wiki/about#content?language=en">About content</a></li>
+  <li><a class="reference create"
+         href="http://127.0.0.1/demo_wiki/create.html?name=more#content?language=en">?More content</a></li>
+  </ul>
+
 External links
 --------------
 
@@ -92,8 +126,8 @@ External links
   >>> linksPage.text = '''
   ... **A collection of interesting links**
   ...
-  ... - http://python.org
-  ... - `Zope <http://zope.org>`_
+  ... - http://python.org#library
+  ... - `Zope <http://zope.org?lang=de>`_
   ... '''
 
 An absolute URL given as link target will not be changed in the process.
@@ -101,14 +135,15 @@ An absolute URL given as link target will not be changed in the process.
   >>> print linksPage.render(TestRequest())
   <p><strong>A collection of interesting links</strong></p>
   <ul class="simple">
-  <li><a class="reference" href="http://python.org">http://python.org</a></li>
-  <li><a class="reference" href="http://zope.org">Zope</a></li>
+  <li><a class="reference"
+         href="http://python.org#library">http://python.org#library</a></li>
+  <li><a class="reference" href="http://zope.org?lang=de">Zope</a></li>
   </ul>
 
 Nevertheless the links are registered in the link manager.
 
   >>> len(links)
-  4
+  6
 
 When we render external links repeatedly no new link objects will be
 created.
@@ -116,9 +151,10 @@ created.
   >>> print linksPage.render(TestRequest())
   <p><strong>A collection of interesting links</strong></p>
   <ul class="simple">
-  <li><a class="reference" href="http://python.org">http://python.org</a></li>
-  <li><a class="reference" href="http://zope.org">Zope</a></li>
+  <li><a class="reference"
+         href="http://python.org#library">http://python.org#library</a></li>
+  <li><a class="reference" href="http://zope.org?lang=de">Zope</a></li>
   </ul>
 
   >>> len(links)
-  4
+  6
diff --git a/wiki/base/link.py b/wiki/base/link.py
index 754f026..42497f0 100644
--- a/wiki/base/link.py
+++ b/wiki/base/link.py
@@ -114,28 +114,52 @@ class LinkProcessor(object):
         sourceUid = self.source.uid
         lmName = self.source.getConfig('linkManager')
         lm = manager.getPlugin(ILinkManager, lmName)
+        targetPageName = self.targetName
+        params = fragment = ''
+        if '?' in targetPageName:
+            targetPageName, params = targetPageName.split('?', 1)
+        if '#' in targetPageName:
+            targetPageName, fragment = targetPageName.split('#', 1)
         existing = lm.query(source=sourceUid, name=self.targetName)
         if existing:
             link = existing.next()
-            #print '*** #1', self.targetName, link
-            target = manager.getObject(link.target)
+            if link.target is not None:
+                target = manager.getObject(link.target)
+            else:
+                target = None
         else:
-            target = wiki.getPage(self.targetName)
-            #print '*** #2', self.targetName, target
+            target = wiki.getPage(targetPageName)
             targetUid = target is not None and target.uid or None
             link = lm.createLink(self.targetName, sourceUid, targetUid)
         if link.refuri is None:
+            if fragment:
+                link.targetFragment = fragment
+            if params:
+                link.targetParameters = params
             if self.request is not None:
                 if target is None:
-                    link.refuri = '%s/create.html?linkid=%s' % (
-                                    absoluteURL(wiki, self.request), link.identifier)
+                    uri = link.refuri = '%s/create.html?name=%s' % (
+                                    absoluteURL(wiki, self.request), link.name)
                 else:
-                    link.refuri = target.getURI(self.request)
-        self.setURI(link.refuri)
+                    uri = link.refuri = target.getURI(self.request)
+                    uri += self.fragmentAndParams(fragment, params)
+        else:
+            uri = link.refuri + self.fragmentAndParams(
+                                            link.targetFragment,
+                                            link.targetParameters)
+        self.setURI(uri)
         if target is None:
             self.markPresentation('create')
             self.addText('?')
 
+    def fragmentAndParams(self, fragment, params):
+        f = p = ''
+        if fragment:
+            f = '#' + fragment
+        if params:
+            p = '?' + params
+        return f + p
+
     def setURI(self, uri):
         raise ValueError('To be implemented by subclass.')