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author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/ajv/lib/compile/ucs2length.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) | |
download | wallet-core-de98e0b232509d5f40c135d540a70e415272ff85.tar.xz |
node_modules
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 000000000..d193fb170 --- /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; +}; |