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exports.parse = exports.decode = decode
exports.stringify = exports.encode = encode
exports.safe = safe
exports.unsafe = unsafe
var eol = process.platform === "win32" ? "\r\n" : "\n"
function encode (obj, section) {
var children = []
, out = ""
Object.keys(obj).forEach(function (k, _, __) {
var val = obj[k]
if (val && typeof val === "object") {
children.push(k)
} else {
out += safe(k) + " = " + safe(val) + eol
}
})
if (section && out.length) {
out = "[" + safe(section) + "]" + eol + out
}
children.forEach(function (k, _, __) {
var nk = dotSplit(k).join('\\.')
var child = encode(obj[k], (section ? section + "." : "") + nk)
if (out.length && child.length) {
out += eol
}
out += child
})
return out
}
function dotSplit (str) {
return str.replace(/\1/g, '\2LITERAL\\1LITERAL\2')
.replace(/\\\./g, '\1')
.split(/\./).map(function (part) {
return part.replace(/\1/g, '\\.')
.replace(/\2LITERAL\\1LITERAL\2/g, '\1')
})
}
function decode (str) {
var out = {}
, p = out
, section = null
, state = "START"
// section |key = value
, re = /^\[([^\]]*)\]$|^([^=]+)(=(.*))?$/i
, lines = str.split(/[\r\n]+/g)
, section = null
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])
p = out[section] = out[section] || {}
return
}
var key = unsafe(match[2])
, value = match[3] ? unsafe((match[4] || "")) : true
switch (value) {
case 'true':
case 'false':
case 'null': value = JSON.parse(value)
}
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") 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)
, p = out
, l = parts.pop()
, nl = l.replace(/\\\./g, '.')
parts.forEach(function (part, _, __) {
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 safe (val) {
return ( typeof val !== "string"
|| val.match(/[\r\n]/)
|| val.match(/^\[/)
|| (val.length > 1
&& val.charAt(0) === "\""
&& val.slice(-1) === "\"")
|| val !== val.trim() )
? JSON.stringify(val)
: val.replace(/;/g, '\\;')
}
function unsafe (val, doUnesc) {
val = (val || "").trim()
if (val.charAt(0) === "\"" && val.slice(-1) === "\"") {
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 (c === "\\" || c === ";")
unesc += c
else
unesc += "\\" + c
esc = false
} else if (c === ";") {
break
} else if (c === "\\") {
esc = true
} else {
unesc += c
}
}
if (esc)
unesc += "\\"
return unesc
}
return val
}
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