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author | Adam Cozzette <acozzette@google.com> | 2016-11-17 17:04:30 -0800 |
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committer | Adam Cozzette <acozzette@google.com> | 2016-11-17 17:04:30 -0800 |
commit | 5d63097fc2b7f405f53d6ca4ad3c1ebd98d80ddd (patch) | |
tree | 50d8116271f024e16334785464c794da85f3ce12 /js/binary/encoder.js | |
parent | 5a76e633ea9b5adb215e93fdc11e1c0c08b3fc74 (diff) | |
parent | cd315dcbadc02569e145bde16e3f66c2fbb08e31 (diff) | |
download | protobuf-5d63097fc2b7f405f53d6ca4ad3c1ebd98d80ddd.tar.gz protobuf-5d63097fc2b7f405f53d6ca4ad3c1ebd98d80ddd.tar.bz2 protobuf-5d63097fc2b7f405f53d6ca4ad3c1ebd98d80ddd.zip |
Merge branch 'master' into down-integrate-with-msvc-fix
Diffstat (limited to 'js/binary/encoder.js')
-rw-r--r-- | js/binary/encoder.js | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/js/binary/encoder.js b/js/binary/encoder.js index 30a7f2a1..1663bbd4 100644 --- a/js/binary/encoder.js +++ b/js/binary/encoder.js @@ -452,19 +452,36 @@ jspb.BinaryEncoder.prototype.writeFixedHash64 = function(hash) { */ jspb.BinaryEncoder.prototype.writeString = function(value) { var oldLength = this.buffer_.length; - - // UTF16 to UTF8 conversion loop swiped from goog.crypt.stringToUtf8ByteArray. + for (var i = 0; i < value.length; i++) { + var c = value.charCodeAt(i); + if (c < 128) { this.buffer_.push(c); } else if (c < 2048) { this.buffer_.push((c >> 6) | 192); this.buffer_.push((c & 63) | 128); - } else { - this.buffer_.push((c >> 12) | 224); - this.buffer_.push(((c >> 6) & 63) | 128); - this.buffer_.push((c & 63) | 128); + } else if (c < 65536) { + // Look for surrogates + if (c >= 0xD800 && c <= 0xDBFF && i + 1 < value.length) { + var second = value.charCodeAt(i + 1); + if (second >= 0xDC00 && second <= 0xDFFF) { // low surrogate + // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae + c = (c - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; + + this.buffer_.push((c >> 18) | 240); + this.buffer_.push(((c >> 12) & 63 ) | 128); + this.buffer_.push(((c >> 6) & 63) | 128); + this.buffer_.push((c & 63) | 128); + i++; + } + } + else { + this.buffer_.push((c >> 12) | 224); + this.buffer_.push(((c >> 6) & 63) | 128); + this.buffer_.push((c & 63) | 128); + } } } |