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| author | Arman Shah <[email protected]> | 2018-02-19 23:50:04 -0800 |
|---|---|---|
| committer | Arman Shah <[email protected]> | 2018-02-19 23:50:04 -0800 |
| commit | ae34dcfd3823a609ba7182f2d6eda593be876f7d (patch) | |
| tree | b9d7f2884c4999349418cbdc4f9ab46d113e0afd /node_modules/ajv/lib/compile/ucs2length.js | |
| parent | Initial commit (diff) | |
| download | launcher-ae34dcfd3823a609ba7182f2d6eda593be876f7d.tar.xz launcher-ae34dcfd3823a609ba7182f2d6eda593be876f7d.zip | |
add base files
Diffstat (limited to 'node_modules/ajv/lib/compile/ucs2length.js')
| -rw-r--r-- | node_modules/ajv/lib/compile/ucs2length.js | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/node_modules/ajv/lib/compile/ucs2length.js b/node_modules/ajv/lib/compile/ucs2length.js new file mode 100644 index 0000000..d193fb1 --- /dev/null +++ b/node_modules/ajv/lib/compile/ucs2length.js @@ -0,0 +1,20 @@ +'use strict'; + +// https://mathiasbynens.be/notes/javascript-encoding +// https://github.com/bestiejs/punycode.js - punycode.ucs2.decode +module.exports = function ucs2length(str) { + var length = 0 + , len = str.length + , pos = 0 + , value; + while (pos < len) { + length++; + value = str.charCodeAt(pos++); + if (value >= 0xD800 && value <= 0xDBFF && pos < len) { + // high surrogate, and there is a next character + value = str.charCodeAt(pos); + if ((value & 0xFC00) == 0xDC00) pos++; // low surrogate + } + } + return length; +}; |