| Path : /var/www/html/mertbinici/BusinessBooster/node_modules/postgres-bytea/ |
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| Current File : /var/www/html/mertbinici/BusinessBooster/node_modules/postgres-bytea/decode.js |
'use strict'
module.exports = byteaToBinary
function byteaToBinary (input) {
if (/^\\x/.test(input)) {
return byteaHexFormatToBinary(input)
}
return byteaEscapeFormatToBinary(input)
}
function byteaHexFormatToBinary (input) {
return Buffer.from(input.substr(2), 'hex')
}
function byteaEscapeFormatToBinary (input) {
let output = ''
let i = 0
while (i < input.length) {
if (input[i] !== '\\') {
output += input[i]
++i
} else {
if (/[0-7]{3}/.test(input.substr(i + 1, 3))) {
output += String.fromCharCode(parseInt(input.substr(i + 1, 3), 8))
i += 4
} else {
let backslashes = 1
while (i + backslashes < input.length && input[i + backslashes] === '\\') {
backslashes++
}
for (let k = 0; k < Math.floor(backslashes / 2); ++k) {
output += '\\'
}
i += Math.floor(backslashes / 2) * 2
}
}
}
return Buffer.from(output, 'binary')
}