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'use strict';
var util = require("util");
function toString(val) {
val = val.toString(8);
while (val.length < 4) {
val = "0" + val;
}
return val;
}
var defaultUmask = 18; // 0022;
var defaultUmaskString = toString(defaultUmask);
function validate(data, k, val) {
// must be either an integer or an octal string.
if (typeof val === "number" && !isNaN(val)) {
data[k] = val;
return true;
}
if (typeof val === "string") {
if (val.charAt(0) !== "0") {
return false;
}
data[k] = parseInt(val, 8);
return true;
}
return false;
}
function convert_fromString(val, cb) {
if (typeof val === "string") {
// check for octal string first
if (val.charAt(0) === '0' && /^[0-7]+$/.test(val)) {
val = parseInt(val, 8);
} else if (val.charAt(0) !== '0' && /^[0-9]+$/.test(val)) {
// legacy support for decimal strings
val = parseInt(val, 10);
} else {
return cb(new Error(util.format("Expected octal string, got %j, defaulting to %j",
val, defaultUmaskString)),
defaultUmask);
}
} else if (typeof val !== "number") {
return cb(new Error(util.format("Expected number or octal string, got %j, defaulting to %j",
val, defaultUmaskString)),
defaultUmask);
}
val = Math.floor(val);
if ((val < 0) || (val > 511)) {
return cb(new Error(util.format("Must be in range 0..511 (0000..0777), got %j", val)),
defaultUmask);
}
cb(null, val);
}
function fromString(val, cb) {
// synchronous callback, no zalgo
convert_fromString(val, cb || function (err, result) {
/*jslint unparam:true*/
val = result;
});
return val;
}
exports.toString = toString;
exports.fromString = fromString;
exports.validate = validate;