| 1 | const { basename, dirname, join, format, extname } = require('path')
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| 2 | const { createHash } = require('crypto')
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| 3 |
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| 4 | const SHA1 = 'sha1'
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| 5 | const DEFAULT_ALGORITHM = SHA1
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| 6 |
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| 7 | const checksum = (s, algorithm = DEFAULT_ALGORITHM, format = 'hex') =>
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| 8 | createHash(algorithm)
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| 9 | .update(s)
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| 10 | .digest(format)
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| 11 |
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| 12 | const hashFromFileContent = s => s.trim().split(/\s+/)[0]
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| 13 |
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| 14 | const checksumFilePath = path =>
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| 15 | join(
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| 16 | dirname(path),
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| 17 | format({
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| 18 | name: `.${basename(path)}`,
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| 19 | ext: '.sha',
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| 20 | }),
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| 21 | )
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| 22 |
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| 23 | module.exports = {
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| 24 | DEFAULT_ALGORITHM,
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| 25 | SHA1,
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| 26 | checksum,
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| 27 | checksumFilePath,
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| 28 | hashFromFileContent,
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| 29 | }
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