1 files changed, 141 insertions, 0 deletions
diff --git a/js/vendor/text-encoder-lite.js b/js/vendor/text-encoder-lite.js
new file mode 100644
index 0000000..957fd9b
--- /dev/null
+++ b/js/vendor/text-encoder-lite.js
@@ -0,0 +1,141 @@
+// taken from https://github.com/coolaj86/TextEncoderLite/blob/master/index.js
+// added polyfill at bottom
+
+function TextEncoderLite() {
+}
+function TextDecoderLite() {
+}
+
+(function () {
+'use strict';
+
+// Taken from https://github.com/feross/buffer/blob/master/index.js
+// Thanks Feross et al! :-)
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+  var i = 0
+
+  for (; i < length; i++) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (leadSurrogate) {
+        // 2 leads in a row
+        if (codePoint < 0xDC00) {
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          leadSurrogate = codePoint
+          continue
+        } else {
+          // valid surrogate pair
+          codePoint = leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00 | 0x10000
+          leadSurrogate = null
+        }
+      } else {
+        // no lead yet
+
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else {
+          // valid lead
+          leadSurrogate = codePoint
+          continue
+        }
+      }
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+      leadSurrogate = null
+    }
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x200000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function utf8Slice (buf, start, end) {
+  var res = ''
+  var tmp = ''
+  end = Math.min(buf.length, end || Infinity)
+  start = start || 0;
+
+  for (var i = start; i < end; i++) {
+    if (buf[i] <= 0x7F) {
+      res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
+      tmp = ''
+    } else {
+      tmp += '%' + buf[i].toString(16)
+    }
+  }
+
+  return res + decodeUtf8Char(tmp)
+}
+
+function decodeUtf8Char (str) {
+  try {
+    return decodeURIComponent(str)
+  } catch (err) {
+    return String.fromCharCode(0xFFFD) // UTF 8 invalid char
+  }
+}
+
+TextEncoderLite.prototype.encode = function (str) {
+  var result;
+
+  if ('undefined' === typeof Uint8Array) {
+    result = utf8ToBytes(str);
+  } else {
+    result = new Uint8Array(utf8ToBytes(str));
+  }
+
+  return result;
+};
+
+TextDecoderLite.prototype.decode = function (bytes) {
+  return utf8Slice(bytes, 0, bytes.length);
+}
+
+}());
+
+if (typeof TextEncoder === 'undefined') TextEncoder = TextEncoderLite
+if (typeof TextDecoder === 'undefined') TextDecoder = TextDecoderLite