1 files changed, 23 insertions, 0 deletions
diff --git a/lib/modifiers/summary/indexArticleLevels.js b/lib/modifiers/summary/indexArticleLevels.js
new file mode 100644
index 0000000..02ca594
--- /dev/null
+++ b/lib/modifiers/summary/indexArticleLevels.js
@@ -0,0 +1,23 @@
+
+/**
+    Index levels in an article tree
+
+    @param {Article}
+    @param {String} baseLevel
+    @return {Article}
+*/
+function indexArticleLevels(article, baseLevel) {
+    baseLevel = baseLevel || article.getLevel();
+    var articles = article.getArticle();
+
+    articles = articles.map(function(inner, i) {
+        return indexArticleLevels(inner, baseLevel + '.' + (i + 1));
+    });
+
+    return article.merge({
+        level: baseLevel,
+        articles: articles
+    });
+}
+
+module.exports = indexArticleLevels;