Fix capitalisation in header links (copy verbatim from MW), fix hyphens

in header links

Closes #17

dokuwiki.py

@@ -194,6 +194,22 @@ def make_dokuwiki_pagename(mediawiki_name):
     result = mediawiki_name.replace(" ","_")
     return names.clean_id(camel_to_underscore(result)).replace("/",":")
 
+def make_dokuwiki_heading_id(mw_heading_name):
+    """
+    Convert a Mediawiki internal anchor heading link to the Dokuwiki anchor heading link id
+
+    Equivalent function in dokuwiki is _headerToLink in inc/parser/xhtml.php
+    which calls sectionID in inc/pageutils.php
+    """
+    result = names.clean_id(mw_heading_name, True)
+    result = re.sub(r'[:.]', '', result)
+
+    nums_stripped = result.lstrip("0123456789_-")
+    if len(nums_stripped):
+        return nums_stripped
+    else:
+        return "section"+re.sub(r"[^0-9]+", "", result)
+
 def camel_to_underscore(camelcase):
     """
     Convert a camelcased string to underscore_delimited (tweaked from this StackOverflow answer)

names.py

@@ -6,7 +6,7 @@
 """
 import re, os.path, unicodedata
 
-def clean_id(name):
+def clean_id(name, preserve_case=False):
     """
     Return a 'clean' dokuwiki-compliant name. Based on the cleanID() PHP function in inc/pageutils.php
 

wikicontent.py

@@ -259,12 +259,19 @@ def convert(node, trailing_newline):
         print("WARNING: Unsupported node type: %s" % (node.__class__))
     return convert_children(node)
 
-
 def convert_internal_link(mw_target):
     """
     Convert an internal Mediawiki link, with or without an anchor # in the middle.
 
     Same as converting a plain pagename, only we want to preserve any #s in the target text.
     """
-    parts = mw_target.split("#")
-    return "#".join([dokuwiki.make_dokuwiki_pagename(part) for part in parts])
+    if "#" in mw_target:
+        page,anchor = mw_target.split("#",1)
+    else:
+        page = mw_target
+        anchor = None
+    if len(page):
+        page = dokuwiki.make_dokuwiki_pagename(page)
+    if anchor is not None:
+        page = page + "#" + dokuwiki.make_dokuwiki_heading_id(anchor)
+    return page