From b358fbdbe9cbd4ce644c4b2c7b9b4cec0811e14e Mon Sep 17 00:00:00 2001
From: Tom Christie
Date: Fri, 29 Apr 2011 14:32:56 +0100
Subject: More refactoring - move various less core stuff into utils etc

---
 djangorestframework/compat.py | 66 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 59 insertions(+), 7 deletions(-)

(limited to 'djangorestframework/compat.py')

diff --git a/djangorestframework/compat.py b/djangorestframework/compat.py
index 22b57186..98fbbb62 100644
--- a/djangorestframework/compat.py
+++ b/djangorestframework/compat.py
@@ -1,9 +1,24 @@
 """Compatability module to provide support for backwards compatability with older versions of django/python"""
 
+# cStringIO only if it's available
+try:
+    import cStringIO as StringIO
+except ImportError:
+    import StringIO
+
+
+# parse_qs 
+try:
+    # python >= ?
+    from urlparse import parse_qs
+except ImportError:
+    # python <= ?
+    from cgi import parse_qs
+
+   
 # django.test.client.RequestFactory (Django >= 1.3) 
 try:
     from django.test.client import RequestFactory
-
 except ImportError:
     from django.test import Client
     from django.core.handlers.wsgi import WSGIRequest
@@ -49,7 +64,7 @@ except ImportError:
 # django.views.generic.View (Django >= 1.3)
 try:
     from django.views.generic import View
-except:
+except ImportError:
     from django import http
     from django.utils.functional import update_wrapper
     # from django.utils.log import getLogger
@@ -127,10 +142,47 @@ except:
             #)
             return http.HttpResponseNotAllowed(allowed_methods)
 
-# parse_qs 
+
 try:
-    # python >= ?
-    from urlparse import parse_qs
+    import markdown
+    import re
+    
+    class CustomSetextHeaderProcessor(markdown.blockprocessors.BlockProcessor):
+        """Override markdown's SetextHeaderProcessor, so that ==== headers are <h2> and ---- headers are <h3>.
+        
+        We use <h1> for the resource name."""
+    
+        # Detect Setext-style header. Must be first 2 lines of block.
+        RE = re.compile(r'^.*?\n[=-]{3,}', re.MULTILINE)
+    
+        def test(self, parent, block):
+            return bool(self.RE.match(block))
+    
+        def run(self, parent, blocks):
+            lines = blocks.pop(0).split('\n')
+            # Determine level. ``=`` is 1 and ``-`` is 2.
+            if lines[1].startswith('='):
+                level = 2
+            else:
+                level = 3
+            h = markdown.etree.SubElement(parent, 'h%d' % level)
+            h.text = lines[0].strip()
+            if len(lines) > 2:
+                # Block contains additional lines. Add to  master blocks for later.
+                blocks.insert(0, '\n'.join(lines[2:]))
+            
+    def apply_markdown(text):
+        """Simple wrapper around markdown.markdown to apply our CustomSetextHeaderProcessor,
+        and also set the base level of '#' style headers to <h2>."""
+        extensions = ['headerid(level=2)']
+        safe_mode = False,
+        output_format = markdown.DEFAULT_OUTPUT_FORMAT
+
+        md = markdown.Markdown(extensions=markdown.load_extensions(extensions),
+                               safe_mode=safe_mode, 
+                               output_format=output_format)
+        md.parser.blockprocessors['setextheader'] = CustomSetextHeaderProcessor(md.parser)
+        return md.convert(text)
+
 except ImportError:
-    # python <= ?
-    from cgi import parse_qs
\ No newline at end of file
+    apply_markdown = None
\ No newline at end of file
-- 
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