Current Dev State

static/js/ketcher2/node_modules/transformify/index.js

@@ -0,0 +1,49 @@
+'use strict';
+
+var stream = require('stream');
+var util = require('util');
+
+var Transform = stream.Transform || require('readable-stream').Transform;
+
+util.inherits(StringTransform, Transform);
+
+function StringTransform (fn, opts) {
+  if (!(this instanceof StringTransform)) return new StringTransform(fn, opts);
+
+  opts = opts || {};
+  
+  Transform.call(this, opts);
+  this.transformFn = fn;
+  this.string = '';
+}
+
+StringTransform.prototype._transform = function (chunk, encoding, cb) {
+  this.string += chunk.toString();  
+  cb();
+}
+
+StringTransform.prototype._flush = function (cb) {
+  try {
+    var transformed = this.transformFn(this.string);
+    this.push(transformed);
+    cb();
+  } catch (err) {
+    cb(err);
+  }
+}
+
+var go = module.exports = 
+
+/**
+ * Takes a synchronous function that transforms a string and returns a transform compatible with browserify, catw and mutiny.
+ * 
+ * @name transformify
+ * @function
+ * @param {Function(String):String} fn 
+ * @return {Function(String):TransformStream} function that returns a transform stream
+ */
+function transformify(fn) {
+  return function (file) {
+    return new StringTransform(fn);  
+  }
+};