207 lines
5.0 KiB
JavaScript
207 lines
5.0 KiB
JavaScript
const { hasOwnProperty } = Object.prototype
|
|
|
|
const eol = typeof process !== 'undefined' &&
|
|
process.platform === 'win32' ? '\r\n' : '\n'
|
|
|
|
const encode = (obj, opt) => {
|
|
const children = []
|
|
let out = ''
|
|
|
|
if (typeof opt === 'string') {
|
|
opt = {
|
|
section: opt,
|
|
whitespace: false,
|
|
}
|
|
} else {
|
|
opt = opt || Object.create(null)
|
|
opt.whitespace = opt.whitespace === true
|
|
}
|
|
|
|
const separator = opt.whitespace ? ' = ' : '='
|
|
|
|
for (const k of Object.keys(obj)) {
|
|
const val = obj[k]
|
|
if (val && Array.isArray(val)) {
|
|
for (const item of val)
|
|
out += safe(k + '[]') + separator + safe(item) + '\n'
|
|
} else if (val && typeof val === 'object')
|
|
children.push(k)
|
|
else
|
|
out += safe(k) + separator + safe(val) + eol
|
|
}
|
|
|
|
if (opt.section && out.length)
|
|
out = '[' + safe(opt.section) + ']' + eol + out
|
|
|
|
for (const k of children) {
|
|
const nk = dotSplit(k).join('\\.')
|
|
const section = (opt.section ? opt.section + '.' : '') + nk
|
|
const { whitespace } = opt
|
|
const child = encode(obj[k], {
|
|
section,
|
|
whitespace,
|
|
})
|
|
if (out.length && child.length)
|
|
out += eol
|
|
|
|
out += child
|
|
}
|
|
|
|
return out
|
|
}
|
|
|
|
const dotSplit = str =>
|
|
str.replace(/\1/g, '\u0002LITERAL\\1LITERAL\u0002')
|
|
.replace(/\\\./g, '\u0001')
|
|
.split(/\./)
|
|
.map(part =>
|
|
part.replace(/\1/g, '\\.')
|
|
.replace(/\2LITERAL\\1LITERAL\2/g, '\u0001'))
|
|
|
|
const decode = str => {
|
|
const out = Object.create(null)
|
|
let p = out
|
|
let section = null
|
|
// section |key = value
|
|
const re = /^\[([^\]]*)\]$|^([^=]+)(=(.*))?$/i
|
|
const lines = str.split(/[\r\n]+/g)
|
|
|
|
for (const line of lines) {
|
|
if (!line || line.match(/^\s*[;#]/))
|
|
continue
|
|
const match = line.match(re)
|
|
if (!match)
|
|
continue
|
|
if (match[1] !== undefined) {
|
|
section = unsafe(match[1])
|
|
if (section === '__proto__') {
|
|
// not allowed
|
|
// keep parsing the section, but don't attach it.
|
|
p = Object.create(null)
|
|
continue
|
|
}
|
|
p = out[section] = out[section] || Object.create(null)
|
|
continue
|
|
}
|
|
const keyRaw = unsafe(match[2])
|
|
const isArray = keyRaw.length > 2 && keyRaw.slice(-2) === '[]'
|
|
const key = isArray ? keyRaw.slice(0, -2) : keyRaw
|
|
if (key === '__proto__')
|
|
continue
|
|
const valueRaw = match[3] ? unsafe(match[4]) : true
|
|
const value = valueRaw === 'true' ||
|
|
valueRaw === 'false' ||
|
|
valueRaw === 'null' ? JSON.parse(valueRaw)
|
|
: valueRaw
|
|
|
|
// Convert keys with '[]' suffix to an array
|
|
if (isArray) {
|
|
if (!hasOwnProperty.call(p, key))
|
|
p[key] = []
|
|
else if (!Array.isArray(p[key]))
|
|
p[key] = [p[key]]
|
|
}
|
|
|
|
// safeguard against resetting a previously defined
|
|
// array by accidentally forgetting the brackets
|
|
if (Array.isArray(p[key]))
|
|
p[key].push(value)
|
|
else
|
|
p[key] = value
|
|
}
|
|
|
|
// {a:{y:1},"a.b":{x:2}} --> {a:{y:1,b:{x:2}}}
|
|
// use a filter to return the keys that have to be deleted.
|
|
const remove = []
|
|
for (const k of Object.keys(out)) {
|
|
if (!hasOwnProperty.call(out, k) ||
|
|
typeof out[k] !== 'object' ||
|
|
Array.isArray(out[k]))
|
|
continue
|
|
|
|
// see if the parent section is also an object.
|
|
// if so, add it to that, and mark this one for deletion
|
|
const parts = dotSplit(k)
|
|
let p = out
|
|
const l = parts.pop()
|
|
const nl = l.replace(/\\\./g, '.')
|
|
for (const part of parts) {
|
|
if (part === '__proto__')
|
|
continue
|
|
if (!hasOwnProperty.call(p, part) || typeof p[part] !== 'object')
|
|
p[part] = Object.create(null)
|
|
p = p[part]
|
|
}
|
|
if (p === out && nl === l)
|
|
continue
|
|
|
|
p[nl] = out[k]
|
|
remove.push(k)
|
|
}
|
|
for (const del of remove)
|
|
delete out[del]
|
|
|
|
return out
|
|
}
|
|
|
|
const isQuoted = val =>
|
|
(val.charAt(0) === '"' && val.slice(-1) === '"') ||
|
|
(val.charAt(0) === "'" && val.slice(-1) === "'")
|
|
|
|
const safe = val =>
|
|
(typeof val !== 'string' ||
|
|
val.match(/[=\r\n]/) ||
|
|
val.match(/^\[/) ||
|
|
(val.length > 1 &&
|
|
isQuoted(val)) ||
|
|
val !== val.trim())
|
|
? JSON.stringify(val)
|
|
: val.replace(/;/g, '\\;').replace(/#/g, '\\#')
|
|
|
|
const unsafe = (val, doUnesc) => {
|
|
val = (val || '').trim()
|
|
if (isQuoted(val)) {
|
|
// remove the single quotes before calling JSON.parse
|
|
if (val.charAt(0) === "'")
|
|
val = val.substr(1, val.length - 2)
|
|
|
|
try {
|
|
val = JSON.parse(val)
|
|
} catch (_) {}
|
|
} else {
|
|
// walk the val to find the first not-escaped ; character
|
|
let esc = false
|
|
let unesc = ''
|
|
for (let i = 0, l = val.length; i < l; i++) {
|
|
const c = val.charAt(i)
|
|
if (esc) {
|
|
if ('\\;#'.indexOf(c) !== -1)
|
|
unesc += c
|
|
else
|
|
unesc += '\\' + c
|
|
|
|
esc = false
|
|
} else if (';#'.indexOf(c) !== -1)
|
|
break
|
|
else if (c === '\\')
|
|
esc = true
|
|
else
|
|
unesc += c
|
|
}
|
|
if (esc)
|
|
unesc += '\\'
|
|
|
|
return unesc.trim()
|
|
}
|
|
return val
|
|
}
|
|
|
|
module.exports = {
|
|
parse: decode,
|
|
decode,
|
|
stringify: encode,
|
|
encode,
|
|
safe,
|
|
unsafe,
|
|
}
|