From 37c51b80cceae9c03df139dca109fbae7d6edf8e Mon Sep 17 00:00:00 2001
From: Keegan McAllister <keegan@humbughq.com>
Date: Tue, 16 Oct 2012 00:31:47 -0400
Subject: [PATCH] Add a tool to draw the Django template inheritance graph

(imported from commit e10bb719d62a76abfea76c7fc69093a3cc33272e)
---
 templates/.gitignore        |  1 +
 tools/django-template-graph | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 templates/.gitignore
 create mode 100755 tools/django-template-graph

diff --git a/templates/.gitignore b/templates/.gitignore
new file mode 100644
index 0000000000..0710042df0
--- /dev/null
+++ b/templates/.gitignore
@@ -0,0 +1 @@
+/graph.svg
diff --git a/tools/django-template-graph b/tools/django-template-graph
new file mode 100755
index 0000000000..58e5a8b0b7
--- /dev/null
+++ b/tools/django-template-graph
@@ -0,0 +1,18 @@
+#!/bin/bash -e
+
+# Draws the Django template inheritance graph.
+
+cd "$(dirname "$0")"/../templates
+
+(
+    echo 'digraph {'
+    for t in $(find -name '*.html' -printf '%P\n'); do
+        echo "\"$t\";"
+        perl -lne 'print "\"'"$t"'\" -> \"$1\";" if m/{%\s*extends\s*"([^"]+)"/' "$t"
+    done
+    echo '}'
+) > graph.dot
+
+dot -Tsvg graph.dot > graph.svg
+rm graph.dot
+echo file://"$(pwd)"/graph.svg