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88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
'use strict'
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const decodeText = require('./decodeText')
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const RE_ENCODED = /%([a-fA-F0-9]{2})/g
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function encodedReplacer (match, byte) {
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return String.fromCharCode(parseInt(byte, 16))
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}
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function parseParams (str) {
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const res = []
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let state = 'key'
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let charset = ''
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let inquote = false
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let escaping = false
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let p = 0
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let tmp = ''
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for (var i = 0, len = str.length; i < len; ++i) { // eslint-disable-line no-var
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const char = str[i]
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if (char === '\\' && inquote) {
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if (escaping) { escaping = false } else {
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escaping = true
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continue
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}
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} else if (char === '"') {
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if (!escaping) {
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if (inquote) {
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inquote = false
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state = 'key'
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} else { inquote = true }
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continue
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} else { escaping = false }
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} else {
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if (escaping && inquote) { tmp += '\\' }
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escaping = false
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if ((state === 'charset' || state === 'lang') && char === "'") {
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if (state === 'charset') {
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state = 'lang'
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charset = tmp.substring(1)
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} else { state = 'value' }
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tmp = ''
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continue
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} else if (state === 'key' &&
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(char === '*' || char === '=') &&
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res.length) {
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if (char === '*') { state = 'charset' } else { state = 'value' }
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res[p] = [tmp, undefined]
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tmp = ''
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continue
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} else if (!inquote && char === ';') {
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state = 'key'
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if (charset) {
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if (tmp.length) {
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tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
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'binary',
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charset)
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}
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charset = ''
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} else if (tmp.length) {
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tmp = decodeText(tmp, 'binary', 'utf8')
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}
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if (res[p] === undefined) { res[p] = tmp } else { res[p][1] = tmp }
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tmp = ''
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++p
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continue
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} else if (!inquote && (char === ' ' || char === '\t')) { continue }
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}
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tmp += char
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}
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if (charset && tmp.length) {
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tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
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'binary',
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charset)
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} else if (tmp) {
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tmp = decodeText(tmp, 'binary', 'utf8')
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}
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if (res[p] === undefined) {
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if (tmp) { res[p] = tmp }
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} else { res[p][1] = tmp }
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return res
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}
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module.exports = parseParams
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