1 files changed, 81 insertions, 0 deletions
diff --git a/lib/backbone/langs.js b/lib/backbone/langs.js
new file mode 100644
index 0000000..e339fa9
--- /dev/null
+++ b/lib/backbone/langs.js
@@ -0,0 +1,81 @@
+var _ = require('lodash');
+var path = require('path');
+var util = require('util');
+var BackboneFile = require('./file');
+
+function Language(title, folder) {
+    var that = this;
+
+    this.title = title;
+    this.folder = folder;
+
+    Object.defineProperty(this, 'id', {
+        get: function() {
+            return path.basename(that.folder);
+        }
+    });
+}
+
+/*
+A Langs is a list of languages stored in a LANGS.md file
+*/
+function Langs() {
+    BackboneFile.apply(this, arguments);
+
+    this.languages = [];
+}
+util.inherits(Langs, BackboneFile);
+
+Langs.prototype.type = 'langs';
+
+// Parse the readme content
+Langs.prototype.parse = function(content) {
+    var that = this;
+
+    return this.parser.langs(content)
+    .then(function(langs) {
+        that.languages = _.map(langs, function(entry) {
+            return new Language(entry.title, entry.path);
+        });
+    });
+};
+
+// Return the list of languages
+Langs.prototype.list = function() {
+    return this.languages;
+};
+
+// Return default/main language for the book
+Langs.prototype.getDefault = function() {
+    return _.first(this.languages);
+};
+
+// Return true if a language is the default one
+// "lang" cam be a string (id) or a Language entry
+Langs.prototype.isDefault = function(lang) {
+    lang = lang.id || lang;
+    return (this.cound() > 0 && this.getDefault().id == lang);
+};
+
+// Return the count of languages
+Langs.prototype.count = function() {
+    return _.size(this.languages);
+};
+
+// Return templating context for the languages list
+Langs.prototype.getContext = function() {
+    if (this.count() == 0) return {};
+
+    return {
+        languages: {
+            list: _.map(this.languages, function(lang) {
+                return {
+                    id: lang.id,
+                    title: lang.title
+                };
+            })
+        }
+    };
+};
+
+module.exports = Langs;