slightly more coherent organization of concerns

2026-04-23 00:00:09 +08:00 · 2011-08-19 21:50:46 -07:00
parent 9ad78a50f7
commit 7bf8c617c3
67 changed files with 6 additions and 9 deletions
@@ -0,0 +1,125 @@
+
+/*!
+ * EJS
+ * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
+ * MIT Licensed
+ */
+
+/**
+ * Module dependencies.
+ */
+
+var sys = require('sys');
+
+/**
+ * Library version.
+ */
+
+exports.version = '0.0.3';
+
+/**
+ * Intermediate js cache.
+ * 
+ * @type Object
+ */
+
+var cache = {};
+
+/**
+ * Clear intermediate js cache.
+ *
+ * @api public
+ */
+
+exports.clearCache = function(){
+    cache = {};
+};
+
+/**
+ * Escape the given string of `html`.
+ *
+ * @param {String} html
+ * @return {String}
+ * @api private
+ */
+
+function escape(html){
+    return String(html)
+        .replace(/&(?!\w+;)/g, '&amp;')
+        .replace(/</g, '&lt;')
+        .replace(/>/g, '&gt;')
+        .replace(/"/g, '&quot;');
+}
+
+/**
+ * Parse the given `str` of ejs, returning the function body.
+ *
+ * @param {String} str
+ * @return {String}
+ * @api public
+ */
+
+var parse = exports.parse = function(str){
+    return 'var buf = [];\n'
+        + "with (locals) {\nbuf.push('"
+        + String(str)
+            .replace(/[\r\t]/g, " ")
+            .replace(/\n/g, "\\n")
+            .split("<%").join("\t")
+            .replace(/((^|%>)[^\t]*)'/g, "$1\r")
+            .replace(/\t=(.*?)%>/g, "', escape($1) ,'")
+            .replace(/\t-(.*?)%>/g, "', $1 ,'")
+            .split("\t").join("');")
+            .split("%>").join("buf.push('")
+            .split("\r").join("\\'")
+        + "');\n}\nreturn buf.join('');";
+};
+
+/**
+ * Compile the given `str` of ejs into a `Function`.
+ *
+ * @param {String} str
+ * @param {Object} options
+ * @return {Function}
+ * @api public
+ */
+
+var compile = exports.compile = function(str, options){
+    if (options.debug) sys.puts(parse(str));
+    return new Function('locals, escape', parse(str));
+};
+
+/**
+ * Render the given `str` of ejs.
+ *
+ * Options:
+ *
+ *   - `locals`          Local variables object
+ *   - `cache`           Compiled functions are cached, requires `filename`
+ *   - `filename`        Used by `cache` to key caches
+ *   - `context|scope`   Function execution context
+ *   - `debug`           Output generated function body
+ *
+ * @param {String} str
+ * @param {Object} options
+ * @return {String}
+ * @api public
+ */
+
+exports.render = function(str, options){
+    var fn,
+        options = options || {};
+    if (options.cache) {
+        if (options.filename) {
+            fn = cache[options.filename] = compile(str, options);
+        } else {
+            throw new Error('"cache" option requires "filename".');
+        }
+    } else {
+        fn = compile(str, options);
+    }
+    return fn.call(
+        options.context || options.scope,
+        options.locals || {},
+        escape);
+};