32 lines
823 B
JavaScript
32 lines
823 B
JavaScript
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'use strict'
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module.exports = function parseBytea (input) {
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if (/^\\x/.test(input)) {
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// new 'hex' style response (pg >9.0)
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return new Buffer(input.substr(2), 'hex')
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}
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var output = ''
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var i = 0
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while (i < input.length) {
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if (input[i] !== '\\') {
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output += input[i]
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++i
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} else {
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if (/[0-7]{3}/.test(input.substr(i + 1, 3))) {
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output += String.fromCharCode(parseInt(input.substr(i + 1, 3), 8))
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i += 4
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} else {
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var backslashes = 1
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while (i + backslashes < input.length && input[i + backslashes] === '\\') {
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backslashes++
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}
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for (var k = 0; k < Math.floor(backslashes / 2); ++k) {
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output += '\\'
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}
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i += Math.floor(backslashes / 2) * 2
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}
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}
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}
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return new Buffer(output, 'binary')
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}
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