24 lines
699 B
JavaScript
24 lines
699 B
JavaScript
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/**
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* Convert array of 16 byte values to UUID string format of the form:
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* XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
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*/
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var byteToHex = [];
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for (var i = 0; i < 256; ++i) {
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byteToHex[i] = (i + 0x100).toString(16).substr(1);
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}
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function bytesToUuid(buf, offset) {
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var i = offset || 0;
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var bth = byteToHex;
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return bth[buf[i++]] + bth[buf[i++]] +
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bth[buf[i++]] + bth[buf[i++]] + '-' +
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bth[buf[i++]] + bth[buf[i++]] + '-' +
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bth[buf[i++]] + bth[buf[i++]] + '-' +
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bth[buf[i++]] + bth[buf[i++]] + '-' +
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bth[buf[i++]] + bth[buf[i++]] +
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bth[buf[i++]] + bth[buf[i++]] +
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bth[buf[i++]] + bth[buf[i++]];
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}
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module.exports = bytesToUuid;
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