Add node modules and compiled JavaScript from main (#54)

Co-authored-by: Oliver King <oking3@uncc.edu>

node_modules/stream-buffers/lib/writable_streambuffer.js

@@ -0,0 +1,72 @@
+'use strict';
+
+var util = require('util');
+var stream = require('stream');
+var constants = require('./constants');
+
+var WritableStreamBuffer = module.exports = function(opts) {
+  opts = opts || {};
+  opts.decodeStrings = true;
+
+  stream.Writable.call(this, opts);
+
+  var initialSize = opts.initialSize || constants.DEFAULT_INITIAL_SIZE;
+  var incrementAmount = opts.incrementAmount || constants.DEFAULT_INCREMENT_AMOUNT;
+
+  var buffer = new Buffer(initialSize);
+  var size = 0;
+
+  this.size = function() {
+    return size;
+  };
+
+  this.maxSize = function() {
+    return buffer.length;
+  };
+
+  this.getContents = function(length) {
+    if(!size) return false;
+
+    var data = new Buffer(Math.min(length || size, size));
+    buffer.copy(data, 0, 0, data.length);
+
+    if(data.length < size)
+      buffer.copy(buffer, 0, data.length);
+
+    size -= data.length;
+
+    return data;
+  };
+
+  this.getContentsAsString = function(encoding, length) {
+    if(!size) return false;
+
+    var data = buffer.toString(encoding || 'utf8', 0, Math.min(length || size, size));
+    var dataLength = Buffer.byteLength(data);
+
+    if(dataLength < size)
+      buffer.copy(buffer, 0, dataLength);
+
+    size -= dataLength;
+    return data;
+  };
+
+  var increaseBufferIfNecessary = function(incomingDataSize) {
+    if((buffer.length - size) < incomingDataSize) {
+      var factor = Math.ceil((incomingDataSize - (buffer.length - size)) / incrementAmount);
+
+      var newBuffer = new Buffer(buffer.length + (incrementAmount * factor));
+      buffer.copy(newBuffer, 0, 0, size);
+      buffer = newBuffer;
+    }
+  };
+
+  this._write = function(chunk, encoding, callback) {
+    increaseBufferIfNecessary(chunk.length);
+    chunk.copy(buffer, size, 0);
+    size += chunk.length;
+    callback();
+  };
+};
+
+util.inherits(WritableStreamBuffer, stream.Writable);