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/*
Copyright 2012-2015, Yahoo Inc.
Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
*/
"use strict";
var path = require('path'),
parsePath = require('path-parse'),
SEP = path.sep || /* istanbul ignore next */ '/',
origParser = parsePath,
origSep = SEP;
function makeRelativeNormalizedPath(str, sep) {
var parsed = parsePath(str),
root = parsed.root,
dir,
file = parsed.base,
quoted,
pos;
// handle a weird windows case separately
if (sep === '\\') {
pos = root.indexOf(':\\');
if (pos >= 0) {
root = root.substring(0, pos + 2);
}
}
dir = parsed.dir.substring(root.length);
if (str === '') {
return [];
}
if (sep !== '/') {
quoted = new RegExp(sep.replace(/\W/g, '\\$&'), 'g');
dir = dir.replace(quoted, '/');
file = file.replace(quoted, '/'); // excessively paranoid?
}
if (dir !== '') {
dir = dir + '/' + file;
} else {
dir = file;
}
if (dir.substring(0,1) === '/') {
dir = dir.substring(1);
}
dir = dir.split(/\/+/);
return dir;
}
function Path(strOrArray) {
if (Array.isArray(strOrArray)) {
this.v = strOrArray;
} else if (typeof strOrArray === "string") {
this.v = makeRelativeNormalizedPath(strOrArray, SEP);
} else {
throw new Error('Invalid Path argument must be string or array:' + strOrArray);
}
}
Path.prototype.toString = function () {
return this.v.join('/');
};
Path.prototype.hasParent = function () {
return this.v.length > 0;
};
Path.prototype.parent = function () {
if (!this.hasParent()) {
throw new Error('Unable to get parent for 0 elem path');
}
var p = this.v.slice();
p.pop();
return new Path(p);
};
Path.prototype.elements = function () {
return this.v.slice();
};
Path.prototype.contains = function (other) {
var i;
if (other.length > this.length) {
return false;
}
for (i = 0; i < other.length; i += 1) {
if (this.v[i] !== other.v[i]) {
return false;
}
}
return true;
};
Path.prototype.ancestorOf = function (other) {
return other.contains(this) && other.length !== this.length;
};
Path.prototype.descendantOf = function (other) {
return this.contains(other) && other.length !== this.length;
};
Path.prototype.commonPrefixPath = function (other) {
var len = this.length > other.length ? other.length : this.length,
i,
ret = [];
for (i = 0; i < len; i +=1 ) {
if (this.v[i] === other.v[i]) {
ret.push(this.v[i]);
} else {
break;
}
}
return new Path(ret);
};
['push', 'pop', 'shift', 'unshift', 'splice'].forEach(function (f) {
Path.prototype[f] = function () {
var args = Array.prototype.slice.call(arguments),
v = this.v;
return v[f].apply(v, args);
};
});
Path.compare = function (a, b) {
var al = a.length,
bl = b.length,
astr,
bstr;
if (al < bl) {
return -1;
}
if (al > bl) {
return 1;
}
astr = a.toString();
bstr = b.toString();
return astr < bstr ? -1 : astr > bstr ? 1 : 0;
};
Object.defineProperty(Path.prototype, 'length', {
enumerable: true,
get: function () {
return this.v.length;
}
});
module.exports = Path;
Path.tester = {
setParserAndSep: function (p, sep) {
parsePath = p;
SEP = sep;
},
reset: function () {
parsePath = origParser;
SEP = origSep;
}
};
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