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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2017-12-11 01:15:44 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-12-11 01:15:44 +0800 |
| commit | 93f3b2b114877af17db219e501ae4551df61738d (patch) | |
| tree | 30ab311ab09b9dc4f98b098c8d7fa3a84dc91393 /lib/parse.js | |
| parent | bf000beae710a2b4129bddb009bb706ff036fbb6 (diff) | |
| download | tracifyjs-93f3b2b114877af17db219e501ae4551df61738d.tar.gz tracifyjs-93f3b2b114877af17db219e501ae4551df61738d.zip | |
escape consecutive unpaired surrogates (#2576)
fixes #2569
Diffstat (limited to 'lib/parse.js')
| -rw-r--r-- | lib/parse.js | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/parse.js b/lib/parse.js index 099fc49a..f0098c75 100644 --- a/lib/parse.js +++ b/lib/parse.js @@ -132,6 +132,18 @@ function is_letter(code) { || (code >= 0xaa && UNICODE.letter.test(String.fromCharCode(code))); }; +function is_surrogate_pair_head(code) { + if (typeof code == "string") + code = code.charCodeAt(0); + return code >= 0xd800 && code <= 0xdbff; +} + +function is_surrogate_pair_tail(code) { + if (typeof code == "string") + code = code.charCodeAt(0); + return code >= 0xdc00 && code <= 0xdfff; +} + function is_digit(code) { return code >= 48 && code <= 57; }; |