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/var/www/gtechmarathon2026.bitkit.dk/httpdocs/node_modules/postgres-bytea/decoder.js

Text Base64

'use strict'

const BufferList = require('obuf')
const { Transform } = require('stream')

const State = {
  READ_PREFIX: 1,
  READ_DATA: 2
}

class ByteaDecoder extends Transform {
  constructor () {
    super()
    this._incomingChunks = new BufferList()
    this._state = State.READ_PREFIX
  }

_transform (chunk, encoding, callback) {
    this._incomingChunks.push(chunk)

while (true) {
      if (this._state === State.READ_PREFIX) {
        if (this._incomingChunks.has(3)) {
          const prefix = this._incomingChunks.take(3)
          const prefixString = prefix.toString()
          if (prefixString !== '\\\\x') {
            return this.emit('error', new Error(`Expected double-escaped postgres bytea hex format prefix, received: '${prefixString}'`))
          }
          this._state = State.READ_DATA
          continue
        } else {
          break
        }
      }

if (this._state === State.READ_DATA) {
        if (this._incomingChunks.size >= 2) {
          // two hex characters are needed to parse a byte. read even number of chars, and let remainder roll over
          let evenChunk
          const isEvenLength = this._incomingChunks.size % 2 === 0
          if (isEvenLength) {
            evenChunk = this._incomingChunks.take(this._incomingChunks.size)
          } else {
            evenChunk = this._incomingChunks.take(this._incomingChunks.size - 1)
          }
          this.push(Buffer.from(evenChunk.toString(), 'hex'))
        }
        break
      }
    }

callback()
  }
}

module.exports = ByteaDecoder

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Name	Size	Perms	Modified	Actions
decode-test.js	411 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
decode.js	975 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
decoder-test.js	818 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
decoder.js	1.53 KB	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
encoder-test.js	774 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
encoder.js	285 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
index.js	140 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
license	1.08 KB	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
package.json	708 B	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive
readme.md	2.48 KB	lrw-r--r--	2025-07-10 12:54:56	Edit Download recursive recursive

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