1 files changed, 187 insertions, 0 deletions
diff --git a/node_modules/iconv-lite/encodings/utf16.js b/node_modules/iconv-lite/encodings/utf16.js
new file mode 100644
index 0000000..ae60d98
--- /dev/null
+++ b/node_modules/iconv-lite/encodings/utf16.js
@@ -0,0 +1,187 @@
+"use strict"
+var Buffer = require("safer-buffer").Buffer
+
+// Note: UTF16-LE (or UCS2) codec is Node.js native. See encodings/internal.js
+
+// == UTF16-BE codec. ==========================================================
+
+exports.utf16be = Utf16BECodec
+function Utf16BECodec () {
+}
+
+Utf16BECodec.prototype.encoder = Utf16BEEncoder
+Utf16BECodec.prototype.decoder = Utf16BEDecoder
+Utf16BECodec.prototype.bomAware = true
+
+// -- Encoding
+
+function Utf16BEEncoder () {
+}
+
+Utf16BEEncoder.prototype.write = function (str) {
+  var buf = Buffer.from(str, "ucs2")
+  for (var i = 0; i < buf.length; i += 2) {
+    var tmp = buf[i]; buf[i] = buf[i + 1]; buf[i + 1] = tmp
+  }
+  return buf
+}
+
+Utf16BEEncoder.prototype.end = function () {
+}
+
+// -- Decoding
+
+function Utf16BEDecoder () {
+  this.overflowByte = -1
+}
+
+Utf16BEDecoder.prototype.write = function (buf) {
+  if (buf.length == 0) { return "" }
+
+  var buf2 = Buffer.alloc(buf.length + 1)
+  var i = 0; var j = 0
+
+  if (this.overflowByte !== -1) {
+    buf2[0] = buf[0]
+    buf2[1] = this.overflowByte
+    i = 1; j = 2
+  }
+
+  for (; i < buf.length - 1; i += 2, j += 2) {
+    buf2[j] = buf[i + 1]
+    buf2[j + 1] = buf[i]
+  }
+
+  this.overflowByte = (i == buf.length - 1) ? buf[buf.length - 1] : -1
+
+  return buf2.slice(0, j).toString("ucs2")
+}
+
+Utf16BEDecoder.prototype.end = function () {
+  this.overflowByte = -1
+}
+
+// == UTF-16 codec =============================================================
+// Decoder chooses automatically from UTF-16LE and UTF-16BE using BOM and space-based heuristic.
+// Defaults to UTF-16LE, as it's prevalent and default in Node.
+// http://en.wikipedia.org/wiki/UTF-16 and http://encoding.spec.whatwg.org/#utf-16le
+// Decoder default can be changed: iconv.decode(buf, 'utf16', {defaultEncoding: 'utf-16be'});
+
+// Encoder uses UTF-16LE and prepends BOM (which can be overridden with addBOM: false).
+
+exports.utf16 = Utf16Codec
+function Utf16Codec (codecOptions, iconv) {
+  this.iconv = iconv
+}
+
+Utf16Codec.prototype.encoder = Utf16Encoder
+Utf16Codec.prototype.decoder = Utf16Decoder
+
+// -- Encoding (pass-through)
+
+function Utf16Encoder (options, codec) {
+  options = options || {}
+  if (options.addBOM === undefined) { options.addBOM = true }
+  this.encoder = codec.iconv.getEncoder("utf-16le", options)
+}
+
+Utf16Encoder.prototype.write = function (str) {
+  return this.encoder.write(str)
+}
+
+Utf16Encoder.prototype.end = function () {
+  return this.encoder.end()
+}
+
+// -- Decoding
+
+function Utf16Decoder (options, codec) {
+  this.decoder = null
+  this.initialBufs = []
+  this.initialBufsLen = 0
+
+  this.options = options || {}
+  this.iconv = codec.iconv
+}
+
+Utf16Decoder.prototype.write = function (buf) {
+  if (!this.decoder) {
+    // Codec is not chosen yet. Accumulate initial bytes.
+    this.initialBufs.push(buf)
+    this.initialBufsLen += buf.length
+
+    if (this.initialBufsLen < 16) // We need more bytes to use space heuristic (see below)
+    { return "" }
+
+    // We have enough bytes -> detect endianness.
+    var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding)
+    this.decoder = this.iconv.getDecoder(encoding, this.options)
+
+    var resStr = ""
+    for (var i = 0; i < this.initialBufs.length; i++) { resStr += this.decoder.write(this.initialBufs[i]) }
+
+    this.initialBufs.length = this.initialBufsLen = 0
+    return resStr
+  }
+
+  return this.decoder.write(buf)
+}
+
+Utf16Decoder.prototype.end = function () {
+  if (!this.decoder) {
+    var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding)
+    this.decoder = this.iconv.getDecoder(encoding, this.options)
+
+    var resStr = ""
+    for (var i = 0; i < this.initialBufs.length; i++) { resStr += this.decoder.write(this.initialBufs[i]) }
+
+    var trail = this.decoder.end()
+    if (trail) { resStr += trail }
+
+    this.initialBufs.length = this.initialBufsLen = 0
+    return resStr
+  }
+  return this.decoder.end()
+}
+
+function detectEncoding (bufs, defaultEncoding) {
+  var b = []
+  var charsProcessed = 0
+  // Number of ASCII chars when decoded as LE or BE.
+  var asciiCharsLE = 0
+  var asciiCharsBE = 0
+
+  outerLoop:
+  for (var i = 0; i < bufs.length; i++) {
+    var buf = bufs[i]
+    for (var j = 0; j < buf.length; j++) {
+      b.push(buf[j])
+      if (b.length === 2) {
+        if (charsProcessed === 0) {
+          // Check BOM first.
+          if (b[0] === 0xFF && b[1] === 0xFE) return "utf-16le"
+          if (b[0] === 0xFE && b[1] === 0xFF) return "utf-16be"
+        }
+
+        if (b[0] === 0 && b[1] !== 0) asciiCharsBE++
+        if (b[0] !== 0 && b[1] === 0) asciiCharsLE++
+
+        b.length = 0
+        charsProcessed++
+
+        if (charsProcessed >= 100) {
+          break outerLoop
+        }
+      }
+    }
+  }
+
+  // Make decisions.
+  // Most of the time, the content has ASCII chars (U+00**), but the opposite (U+**00) is uncommon.
+  // So, we count ASCII as if it was LE or BE, and decide from that.
+  if (asciiCharsBE > asciiCharsLE) return "utf-16be"
+  if (asciiCharsBE < asciiCharsLE) return "utf-16le"
+
+  // Couldn't decide (likely all zeros or not enough data).
+  return defaultEncoding || "utf-16le"
+}