| 1 | const Minipass = require('minipass')
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| 2 | const _data = Symbol('_data')
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| 3 | const _length = Symbol('_length')
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| 4 | class Collect extends Minipass {
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| 5 | constructor (options) {
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| 6 | super(options)
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| 7 | this[_data] = []
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| 8 | this[_length] = 0
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| 9 | }
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| 10 | write (chunk, encoding, cb) {
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| 11 | if (typeof encoding === 'function')
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| 12 | cb = encoding, encoding = 'utf8'
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| 13 |
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| 14 | if (!encoding)
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| 15 | encoding = 'utf8'
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| 16 |
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| 17 | const c = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk, encoding)
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| 18 | this[_data].push(c)
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| 19 | this[_length] += c.length
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| 20 | if (cb)
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| 21 | cb()
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| 22 | return true
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| 23 | }
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| 24 | end (chunk, encoding, cb) {
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| 25 | if (typeof chunk === 'function')
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| 26 | cb = chunk, chunk = null
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| 27 | if (typeof encoding === 'function')
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| 28 | cb = encoding, encoding = 'utf8'
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| 29 | if (chunk)
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| 30 | this.write(chunk, encoding)
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| 31 | const result = Buffer.concat(this[_data], this[_length])
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| 32 | super.write(result)
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| 33 | return super.end(cb)
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| 34 | }
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| 35 | }
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| 36 | module.exports = Collect
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| 37 |
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| 38 | // it would be possible to DRY this a bit by doing something like
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| 39 | // this.collector = new Collect() and listening on its data event,
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| 40 | // but it's not much code, and we may as well save the extra obj
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| 41 | class CollectPassThrough extends Minipass {
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| 42 | constructor (options) {
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| 43 | super(options)
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| 44 | this[_data] = []
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| 45 | this[_length] = 0
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| 46 | }
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| 47 | write (chunk, encoding, cb) {
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| 48 | if (typeof encoding === 'function')
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| 49 | cb = encoding, encoding = 'utf8'
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| 50 |
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| 51 | if (!encoding)
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| 52 | encoding = 'utf8'
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| 53 |
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| 54 | const c = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk, encoding)
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| 55 | this[_data].push(c)
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| 56 | this[_length] += c.length
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| 57 | return super.write(chunk, encoding, cb)
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| 58 | }
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| 59 | end (chunk, encoding, cb) {
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| 60 | if (typeof chunk === 'function')
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| 61 | cb = chunk, chunk = null
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| 62 | if (typeof encoding === 'function')
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| 63 | cb = encoding, encoding = 'utf8'
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| 64 | if (chunk)
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| 65 | this.write(chunk, encoding)
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| 66 | const result = Buffer.concat(this[_data], this[_length])
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| 67 | this.emit('collect', result)
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| 68 | return super.end(cb)
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| 69 | }
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| 70 | }
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| 71 | module.exports.PassThrough = CollectPassThrough
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