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- exports.parse = exports.decode = decode
-
- exports.stringify = exports.encode = encode
-
- exports.safe = safe
- exports.unsafe = unsafe
-
- var eol = typeof process !== 'undefined' &&
- process.platform === 'win32' ? '\r\n' : '\n'
-
- function encode (obj, opt) {
- var children = []
- var out = ''
-
- if (typeof opt === 'string') {
- opt = {
- section: opt,
- whitespace: false,
- }
- } else {
- opt = opt || {}
- opt.whitespace = opt.whitespace === true
- }
-
- var separator = opt.whitespace ? ' = ' : '='
-
- Object.keys(obj).forEach(function (k, _, __) {
- var val = obj[k]
- if (val && Array.isArray(val)) {
- val.forEach(function (item) {
- 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
-
- children.forEach(function (k, _, __) {
- var nk = dotSplit(k).join('\\.')
- var section = (opt.section ? opt.section + '.' : '') + nk
- var child = encode(obj[k], {
- section: section,
- whitespace: opt.whitespace,
- })
- if (out.length && child.length)
- out += eol
-
- out += child
- })
-
- return out
- }
-
- function dotSplit (str) {
- return str.replace(/\1/g, '\u0002LITERAL\\1LITERAL\u0002')
- .replace(/\\\./g, '\u0001')
- .split(/\./).map(function (part) {
- return part.replace(/\1/g, '\\.')
- .replace(/\2LITERAL\\1LITERAL\2/g, '\u0001')
- })
- }
-
- function decode (str) {
- var out = {}
- var p = out
- var section = null
- // section |key = value
- var re = /^\[([^\]]*)\]$|^([^=]+)(=(.*))?$/i
- var lines = str.split(/[\r\n]+/g)
-
- lines.forEach(function (line, _, __) {
- if (!line || line.match(/^\s*[;#]/))
- return
- var match = line.match(re)
- if (!match)
- return
- if (match[1] !== undefined) {
- section = unsafe(match[1])
- if (section === '__proto__') {
- // not allowed
- // keep parsing the section, but don't attach it.
- p = {}
- return
- }
- p = out[section] = out[section] || {}
- return
- }
- var key = unsafe(match[2])
- if (key === '__proto__')
- return
- var value = match[3] ? unsafe(match[4]) : true
- switch (value) {
- case 'true':
- case 'false':
- case 'null': value = JSON.parse(value)
- }
-
- // Convert keys with '[]' suffix to an array
- if (key.length > 2 && key.slice(-2) === '[]') {
- key = key.substring(0, key.length - 2)
- if (key === '__proto__')
- return
- if (!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.
- Object.keys(out).filter(function (k, _, __) {
- if (!out[k] ||
- typeof out[k] !== 'object' ||
- Array.isArray(out[k]))
- return false
-
- // see if the parent section is also an object.
- // if so, add it to that, and mark this one for deletion
- var parts = dotSplit(k)
- var p = out
- var l = parts.pop()
- var nl = l.replace(/\\\./g, '.')
- parts.forEach(function (part, _, __) {
- if (part === '__proto__')
- return
- if (!p[part] || typeof p[part] !== 'object')
- p[part] = {}
- p = p[part]
- })
- if (p === out && nl === l)
- return false
-
- p[nl] = out[k]
- return true
- }).forEach(function (del, _, __) {
- delete out[del]
- })
-
- return out
- }
-
- function isQuoted (val) {
- return (val.charAt(0) === '"' && val.slice(-1) === '"') ||
- (val.charAt(0) === "'" && val.slice(-1) === "'")
- }
-
- function safe (val) {
- return (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, '\\#')
- }
-
- function 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
- var esc = false
- var unesc = ''
- for (var i = 0, l = val.length; i < l; i++) {
- var 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
- }
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