1 files changed, 30 insertions, 0 deletions
diff --git a/lib/internal/buffer.js b/lib/internal/buffer.js
new file mode 100644
index 0000000000..fdb34b9efd
--- /dev/null
+++ b/lib/internal/buffer.js
@@ -0,0 +1,30 @@
+'use strict';
+
+if (!process.binding('config').hasIntl) {
+  return;
+}
+
+const normalizeEncoding = require('internal/util').normalizeEncoding;
+const Buffer = require('buffer').Buffer;
+
+const icu = process.binding('icu');
+
+// Transcodes the Buffer from one encoding to another, returning a new
+// Buffer instance.
+exports.transcode = function transcode(source, fromEncoding, toEncoding) {
+  if (!Buffer.isBuffer(source))
+    throw new TypeError('"source" argument must be a Buffer');
+  if (source.length === 0) return Buffer.alloc(0);
+
+  fromEncoding = normalizeEncoding(fromEncoding) || fromEncoding;
+  toEncoding = normalizeEncoding(toEncoding) || toEncoding;
+  const result = icu.transcode(source, fromEncoding, toEncoding);
+  if (Buffer.isBuffer(result))
+    return result;
+
+  const code = icu.icuErrName(result);
+  const err = new Error(`Unable to transcode Buffer [${code}]`);
+  err.code = code;
+  err.errno = result;
+  throw err;
+};