main
Last change
on this file since 79a0317 was 79a0317, checked in by stefan toskovski <stefantoska84@…>, 3 days ago |
F4 Finalna Verzija
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Property mode
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100644
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File size:
922 bytes
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Rev | Line | |
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[79a0317] | 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Alexander Akait @alexander-akait
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | const createHash = require("./createHash");
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| 9 |
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| 10 | /**
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| 11 | * @param {string | Buffer} content content
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| 12 | * @param {string} file file
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| 13 | * @returns {string} generated debug id
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| 14 | */
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| 15 | module.exports = (content, file) => {
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| 16 | // We need a uuid which is 128 bits so we need 2x 64 bit hashes.
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| 17 | // The first 64 bits is a hash of the source.
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| 18 | const sourceHash = createHash("xxhash64").update(content).digest("hex");
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| 19 | // The next 64 bits is a hash of the filename and sourceHash
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| 20 | const hash128 = `${sourceHash}${createHash("xxhash64")
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| 21 | .update(file)
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| 22 | .update(sourceHash)
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| 23 | .digest("hex")}`;
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| 24 |
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| 25 | return [
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| 26 | hash128.slice(0, 8),
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| 27 | hash128.slice(8, 12),
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| 28 | `4${hash128.slice(12, 15)}`,
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| 29 | ((Number.parseInt(hash128.slice(15, 16), 16) & 3) | 8).toString(16) +
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| 30 | hash128.slice(17, 20),
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| 31 | hash128.slice(20, 32)
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| 32 | ].join("-");
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| 33 | };
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