node_modules

1 files changed, 47 insertions, 0 deletions

diff --git a/node_modules/ws/lib/BufferUtil.fallback.js b/node_modules/ws/lib/BufferUtil.fallback.js
new file mode 100644
index 000000000..7abd0d8a6
--- /dev/null
+++ b/node_modules/ws/lib/BufferUtil.fallback.js
@@ -0,0 +1,47 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+exports.BufferUtil = {
+  merge: function(mergedBuffer, buffers) {
+    var offset = 0;
+    for (var i = 0, l = buffers.length; i < l; ++i) {
+      var buf = buffers[i];
+      buf.copy(mergedBuffer, offset);
+      offset += buf.length;
+    }
+  },
+  mask: function(source, mask, output, offset, length) {
+    var maskNum = mask.readUInt32LE(0, true);
+    var i = 0;
+    for (; i < length - 3; i += 4) {
+      var num = maskNum ^ source.readUInt32LE(i, true);
+      if (num < 0) num = 4294967296 + num;
+      output.writeUInt32LE(num, offset + i, true);
+    }
+    switch (length % 4) {
+      case 3: output[offset + i + 2] = source[i + 2] ^ mask[2];
+      case 2: output[offset + i + 1] = source[i + 1] ^ mask[1];
+      case 1: output[offset + i] = source[i] ^ mask[0];
+      case 0:;
+    }
+  },
+  unmask: function(data, mask) {
+    var maskNum = mask.readUInt32LE(0, true);
+    var length = data.length;
+    var i = 0;
+    for (; i < length - 3; i += 4) {
+      var num = maskNum ^ data.readUInt32LE(i, true);
+      if (num < 0) num = 4294967296 + num;
+      data.writeUInt32LE(num, i, true);
+    }
+    switch (length % 4) {
+      case 3: data[i + 2] = data[i + 2] ^ mask[2];
+      case 2: data[i + 1] = data[i + 1] ^ mask[1];
+      case 1: data[i] = data[i] ^ mask[0];
+      case 0:;
+    }
+  }
+}