Files: 1f9a3fcaa6f6fa4a3ad0a219f6df1a476588f6d5 / node_modules / pull-hash / index.js
656 bytesRaw
| 1 | var crypto = require('crypto') |
| 2 | |
| 3 | module.exports = function (type, encoding, onEnd) { |
| 4 | if (onEnd == null) onEnd = encoding, encoding = null |
| 5 | var hash = (typeof type == 'string') ? crypto.createHash(type) : type |
| 6 | var ended |
| 7 | function hasher(read) { |
| 8 | return function (abort, cb) { |
| 9 | read(abort, function (end, data) { |
| 10 | if (end === true && !hasher.digest) hasher.digest = hash.digest(encoding) |
| 11 | else if (!end) hash.update(data) |
| 12 | if (end && onEnd && !ended) { |
| 13 | onEnd(end === true ? null : end, hasher.digest) |
| 14 | ended = true |
| 15 | } |
| 16 | cb(end, data) |
| 17 | }) |
| 18 | } |
| 19 | } |
| 20 | hasher.hash = hash |
| 21 | return hasher |
| 22 | } |
| 23 |
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