1 files changed, 99 insertions, 0 deletions
diff --git a/lib/output/website/themeLoader.js b/lib/output/website/themeLoader.js
new file mode 100644
index 0000000..013b81c
--- /dev/null
+++ b/lib/output/website/themeLoader.js
@@ -0,0 +1,99 @@
+var _ = require('lodash');
+var fs = require('fs');
+var path = require('path');
+var nunjucks = require('nunjucks');
+
+/*
+    Nunjucks loader similar to FileSystemLoader, but avoid infinite looping
+*/
+
+/*
+    Return true if a filename is relative.
+*/
+function isRelative(filename) {
+    return (filename.indexOf('./') === 0 || filename.indexOf('../') === 0);
+}
+
+var ThemeLoader = nunjucks.Loader.extend({
+    init: function(searchPaths) {
+        this.searchPaths = _.map(searchPaths, path.normalize);
+    },
+
+    /*
+        Read source of a resolved filepath
+
+        @param {String}
+        @return {Object}
+    */
+    getSource: function(fullpath) {
+        if (!fullpath) return null;
+
+        fullpath = this.resolve(null, fullpath);
+
+        if(!fullpath) {
+            return null;
+        }
+
+        return {
+            src: fs.readFileSync(fullpath, 'utf-8'),
+            path: fullpath,
+            noCache: true
+        };
+    },
+
+    /*
+        Nunjucks calls "isRelative" to determine when to call "resolve".
+        We handle absolute paths ourselves in ".resolve" so we always return true
+    */
+    isRelative: function() {
+        return true;
+    },
+
+    /*
+        Resolve a template from a current template
+
+        @param {String|null} from
+        @param {String} to
+        @return {String|null}
+    */
+    resolve: function(from, to) {
+        var searchPaths = this.searchPaths;
+
+        // Relative template like "./test.html"
+        if (isRelative(to) && from) {
+            return path.resolve(path.dirname(from), to);
+        }
+
+        // Determine in which search folder we currently are
+        var originalSearchPath = _.chain(this.searchPaths)
+            .sortBy(function(s) {
+                return -s.length;
+            })
+            .find(function(basePath) {
+                return (from && from.indexOf(basePath) === 0);
+            })
+            .value();
+        var originalFilename = originalSearchPath? path.relative(originalSearchPath, from) : null;
+
+        // If we are including same file from a different search path
+        // Slice the search paths to avoid including from previous ones
+        if (originalFilename == to) {
+            var currentIndex = searchPaths.indexOf(originalSearchPath);
+            searchPaths = searchPaths.slice(currentIndex + 1);
+        }
+
+        // Absolute template to resolve in root folder
+        var resultFolder = _.find(searchPaths, function(basePath) {
+            var p = path.resolve(basePath, to);
+
+            return (
+                p.indexOf(basePath) === 0
+                && fs.existsSync(p)
+            );
+        });
+        if (!resultFolder) return null;
+        return path.resolve(resultFolder, to);
+    }
+});
+
+module.exports = ThemeLoader;