1 files changed, 94 insertions, 0 deletions
diff --git a/webapp/django/contrib/markup/templatetags/markup.py b/webapp/django/contrib/markup/templatetags/markup.py
new file mode 100644
index 0000000000..982620bd08
--- /dev/null
+++ b/webapp/django/contrib/markup/templatetags/markup.py
@@ -0,0 +1,94 @@
+"""
+Set of "markup" template filters for Django.  These filters transform plain text
+markup syntaxes to HTML; currently there is support for:
+
+    * Textile, which requires the PyTextile library available at
+      http://dealmeida.net/projects/textile/
+
+    * Markdown, which requires the Python-markdown library from
+      http://www.freewisdom.org/projects/python-markdown
+
+    * ReStructuredText, which requires docutils from http://docutils.sf.net/
+
+In each case, if the required library is not installed, the filter will
+silently fail and return the un-marked-up text.
+"""
+
+from django import template
+from django.conf import settings
+from django.utils.encoding import smart_str, force_unicode
+from django.utils.safestring import mark_safe
+
+register = template.Library()
+
+def textile(value):
+    try:
+        import textile
+    except ImportError:
+        if settings.DEBUG:
+            raise template.TemplateSyntaxError, "Error in {% textile %} filter: The Python textile library isn't installed."
+        return force_unicode(value)
+    else:
+        return mark_safe(force_unicode(textile.textile(smart_str(value), encoding='utf-8', output='utf-8')))
+textile.is_safe = True
+
+def markdown(value, arg=''):
+    """
+    Runs Markdown over a given value, optionally using various
+    extensions python-markdown supports.
+
+    Syntax::
+
+        {{ value|markdown:"extension1_name,extension2_name..." }}
+
+    To enable safe mode, which strips raw HTML and only returns HTML
+    generated by actual Markdown syntax, pass "safe" as the first
+    extension in the list.
+
+    If the version of Markdown in use does not support extensions,
+    they will be silently ignored.
+
+    """
+    try:
+        import markdown
+    except ImportError:
+        if settings.DEBUG:
+            raise template.TemplateSyntaxError, "Error in {% markdown %} filter: The Python markdown library isn't installed."
+        return force_unicode(value)
+    else:
+        # markdown.version was first added in 1.6b. The only version of markdown
+        # to fully support extensions before 1.6b was the shortlived 1.6a.
+        if hasattr(markdown, 'version'):
+            extensions = [e for e in arg.split(",") if e]
+            if len(extensions) > 0 and extensions[0] == "safe":
+                extensions = extensions[1:]
+                safe_mode = True
+            else:
+                safe_mode = False
+
+            # Unicode support only in markdown v1.7 or above. Version_info
+            # exist only in markdown v1.6.2rc-2 or above.
+            if getattr(markdown, "version_info", None) < (1,7):
+                return mark_safe(force_unicode(markdown.markdown(smart_str(value), extensions, safe_mode=safe_mode)))
+            else:
+                return mark_safe(markdown.markdown(force_unicode(value), extensions, safe_mode=safe_mode))
+        else:
+            return mark_safe(force_unicode(markdown.markdown(smart_str(value))))
+markdown.is_safe = True
+
+def restructuredtext(value):
+    try:
+        from docutils.core import publish_parts
+    except ImportError:
+        if settings.DEBUG:
+            raise template.TemplateSyntaxError, "Error in {% restructuredtext %} filter: The Python docutils library isn't installed."
+        return force_unicode(value)
+    else:
+        docutils_settings = getattr(settings, "RESTRUCTUREDTEXT_FILTER_SETTINGS", {})
+        parts = publish_parts(source=smart_str(value), writer_name="html4css1", settings_overrides=docutils_settings)
+        return mark_safe(force_unicode(parts["fragment"]))
+restructuredtext.is_safe = True
+
+register.filter(textile)
+register.filter(markdown)
+register.filter(restructuredtext)