Initial commit

.gitignore

@@ -0,0 +1,2 @@
+.DS_Store
+*.swp

README

@@ -0,0 +1,3 @@
+Node-Parall
+===========
+Node.js parallelism made easy.

lib/encoding.js

@@ -0,0 +1,96 @@
+/** 
+ *        Copyright 2010 Johan Dahlberg. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without 
+ *  modification, are permitted provided that the following conditions 
+ *  are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, 
+ *       this list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright 
+ *       notice, this list of conditions and the following disclaimer in the 
+ *       documentation and/or other materials provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY HYDNA AB ``AS IS'' AND ANY EXPRESS 
+ *  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ *  ARE DISCLAIMED. IN NO EVENT SHALL HYDNA AB OR CONTRIBUTORS BE LIABLE FOR 
+ *  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ *  SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are 
+ *  those of the authors and should not be interpreted as representing 
+ *  official policies, either expressed or implied, of Hydna AB.
+ */
+const Buffer                = require("buffer").Buffer;
+
+const ENCODING              = exports.ENCODING = {};
+
+// Define raw encoding methods.
+ENCODING["raw"] = {};
+ENCODING["raw"].encode = function(graph) {
+  if (graph.length == 1 && Buffer.isBuffer(graph[0])) {
+    return graph[0];
+  } else {
+    throw new Error("TODO: Convert to a larger buffer");
+  }
+}
+ENCODING["raw"].decode = function(buffer, startPos) {
+  return buffer.slice(startPos, buffer.length);
+}
+
+// Define ascii encoding methods.
+ENCODING["ascii"] = {};
+ENCODING["ascii"].encode = function(graph) {
+  var data = graph.join("");
+  var buffer = new Buffer(Buffer.byteLength(data, "ascii"));
+  buffer.write(data, 0, "ascii")
+  return buffer;
+}
+ENCODING["ascii"].decode = function(buffer, startPos) {
+  return buffer.toString("ascii", startPos);
+}
+
+// Define json encoding methods.
+ENCODING["json"] = {};
+ENCODING["json"].encode = function(graph) {
+  var data = JSON.stringify(graph);
+  var buffer = new Buffer(Buffer.byteLength(data, "utf8"));
+  buffer.write(data, 0, "utf8")
+  return buffer;
+}
+ENCODING["json"].decode = function(buffer, startPos) {
+  return JSON.parse(buffer.toString("utf8", startPos));
+}
+
+// Try to define msgpack encoding methods.
+try {
+  var msgpackPack = require("msgpack").pack;
+  var msgpackUnpack = require("msgpack").unpack;
+  ENCODING["msgpack"] = {};
+  ENCODING["msgpack"].encode = function(graph) {
+    return msgpackPack(graph);
+  }
+  ENCODING["msgpack"].decode = function(buffer, startPos) {
+    return msgpackUnpack(buffer.slice(startPos, buffer.length));
+  }  
+} catch (msgpackImportError) {
+  // ignores msgpack support
+}
+
+/**
+ *  Returns a string representation of a buffer 
+ */
+exports.getString = function(enc, offset, graph) {
+  switch (enc) {
+    case "raw": return graph.toString("binary", offset, graph.length);
+    case "json": return JSON.stringify(graph);
+  }
+}
+