1 files changed, 69 insertions, 0 deletions
diff --git a/docutils/transforms/misc.py b/docutils/transforms/misc.py
new file mode 100644
index 000000000..fb01c6c72
--- /dev/null
+++ b/docutils/transforms/misc.py
@@ -0,0 +1,69 @@
+# Author: David Goodger
+# Contact: goodger@users.sourceforge.net
+# Revision: $Revision$
+# Date: $Date$
+# Copyright: This module has been placed in the public domain.
+
+"""
+Miscellaneous transforms.
+"""
+
+__docformat__ = 'reStructuredText'
+
+from docutils import nodes
+from docutils.transforms import Transform, TransformError
+
+
+class CallBack(Transform):
+
+    """
+    Inserts a callback into a document.  The callback is called when the
+    transform is applied, which is determined by its priority.
+
+    For use with `nodes.pending` elements.  Requires a ``details['callback']``
+    entry, a bound method or function which takes one parameter: the pending
+    node.  Other data can be stored in the ``details`` attribute or in the
+    object hosting the callback method.
+    """
+
+    default_priority = 990
+
+    def apply(self):
+        pending = self.startnode
+        pending.details['callback'](pending)
+        pending.parent.remove(pending)
+
+
+class ClassAttribute(Transform):
+
+    """
+    Move the "class" attribute specified in the "pending" node into the
+    immediately following non-comment element.
+    """
+
+    default_priority = 210
+
+    def apply(self):
+        pending = self.startnode
+        parent = pending.parent
+        child = pending
+        while parent:
+            # Check for appropriate following siblings:
+            for index in range(parent.index(child) + 1, len(parent)):
+                element = parent[index]
+                if (isinstance(element, nodes.Invisible) or
+                    isinstance(element, nodes.system_message)):
+                    continue
+                element['classes'] += pending.details['class']
+                pending.parent.remove(pending)
+                return
+            else:
+                # At end of section or container; apply to sibling
+                child = parent
+                parent = parent.parent
+        error = self.document.reporter.error(
+            'No suitable element following "%s" directive'
+            % pending.details['directive'],
+            nodes.literal_block(pending.rawsource, pending.rawsource),
+            line=pending.line)
+        pending.parent.replace(pending, error)