Use template before parsing glossary, summary and langs

lib/book.js

@@ -90,7 +90,7 @@ Book.prototype.parseLangs = function() {
 	.then(function(langs) {
 		if (!langs) return [];
 
-		return that.readFile(langs.path)
+		return that.template.renderFile(langs.path)
 		.then(function(content) {
 			return langs.parser.langs(content);
 		});
@@ -108,7 +108,7 @@ Book.prototype.parseSummary = function() {
 	.then(function(summary) {
 		if (!summary) throw "No SUMMARY file";
 
-		return that.readFile(summary.path)
+		return that.template.renderFile(summary.path)
 		.then(function(content) {
 			return summary.parser.summary(content);
 		});
@@ -126,7 +126,7 @@ Book.prototype.parseGlossary = function() {
 	.then(function(glossary) {
 		if (!glossary) return {};
 
-		return that.readFile(glossary.path)
+		return that.template.renderFile(glossary.path)
 		.then(function(content) {
 			return glossary.parser.glossary(content);
 		});
@@ -174,4 +174,9 @@ Book.prototype.readFile = function(filename) {
 	);
 };
 
+// Return stat for a file
+Book.prototype.statFile = function(filename) {
+	return fs.stat(path.join(this.root, filename));
+};
+
 module.exports= Book;

lib/template.js

@@ -1,17 +1,38 @@
 var _ = require("lodash");
+var Q = require("q");
 var nunjucks = require("nunjucks");
 
 var TemplateEngine = function(book) {
 	this.book = book;
+
+	// Nunjucks env
+	this.env = new nunjucks.Environment(
+		new nunjucks.FileSystemLoader(book.root),
+		{
+			// Escaping is done after by the markdown parser
+			autoescape: false
+		}
+	);
 };
 
 // Render a file from the book
 TemplateEngine.prototype.renderFile = function(filename) {
 	var that = this;
 
-	return this.book.readFile(filename)
-	.then(function(content) {
+	return that.book.statFile(filename)
+	.then(function(stat) {
+		var context = {
+			// Variabels from book.json
+			book: that.book.options.variables,
 
+			// infos about the file
+			file: {
+				path: filename,
+				mtime: stat.mtime
+			}
+		};
+
+		return Q.nfcall(that.env.render.bind(that.env), filename, context);
 	});
 };
 

lib/utils/fs.js

@@ -63,6 +63,7 @@ var getFiles = function(path) {
 
 module.exports = {
     list: getFiles,
+    stat: Q.denodeify(fs.stat),
     readFile: Q.denodeify(fs.readFile),
     writeFile: function(filename, data, options) {
         var d = Q.defer();