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// NOTE: this file is used is the bootstrapping process,
// so any "requires" must be accounted for in narwhal.js
// use the "file" module as the exports object.
var exports = require("file");
/* path manipulation, needed by the sandbox module in the
* bootstrapping process before "require" is ready for use */
if (/\bwindows\b/i.test(system.os)) {
exports.ROOT = "\\";
exports.SEPARATOR = "\\";
exports.ALT_SEPARATOR = "/";
} else {
exports.ROOT = "/";
exports.SEPARATOR = "/";
exports.ALT_SEPARATOR = undefined;
}
// we need to make sure the separator regex is always in sync with the separators.
// this caches the generated regex and rebuild if either separator changes.
exports.SEPARATORS_RE = function() {
if (separatorCached !== exports.SEPARATOR || altSeparatorCached !== exports.ALT_SEPARATOR) {
separatorCached = exports.SEPARATOR;
altSeparatorCached = exports.ALT_SEPARATOR;
separatorReCached = new RegExp("[" +
(separatorCached || '').replace(/[-[\]{}()*+?.\\^$|,#\s]/g, "\\$&") +
(altSeparatorCached || '').replace(/[-[\]{}()*+?.\\^$|,#\s]/g, "\\$&") +
"]", "g");
}
return separatorReCached;
}
var separatorCached, altSeparatorCached, separatorReCached;
exports.join = function () {
return exports.normal(Array.prototype.join.call(arguments, exports.SEPARATOR));
};
exports.split = function (path) {
var parts;
try {
parts = String(path).split(exports.SEPARATORS_RE());
} catch (exception) {
throw new Error("Cannot split " + (typeof path) + ', "' + path + '"');
}
// this special case helps isAbsolute
// distinguish an empty path from an absolute path
if (parts.length == 1 && parts[0] == "")
return [];
return parts;
};
exports.resolve = function () {
var root = "";
var parents = [];
var children = [];
var leaf = "";
for (var i = 0; i < arguments.length; i++) {
var path = String(arguments[i]);
if (path == "")
continue;
var parts = path.split(exports.SEPARATORS_RE());
if (exports.isAbsolute(path)) {
root = parts.shift() + exports.SEPARATOR;
parents = [];
children = [];
}
leaf = parts.pop();
if (leaf == "." || leaf == "..") {
parts.push(leaf);
leaf = "";
}
for (var j = 0; j < parts.length; j++) {
var part = parts[j];
if (part == "." || part == '') {
} else if (part == "..") {
if (children.length) {
children.pop();
} else {
if (root) {
} else {
parents.push("..");
}
}
} else {
children.push(part);
}
};
}
path = parents.concat(children).join(exports.SEPARATOR);
if (path) leaf = exports.SEPARATOR + leaf;
return root + path + leaf;
};
exports.normal = function (path) {
return exports.resolve(path);
};
// XXX not standard
exports.isAbsolute = function (path) {
// for absolute paths on any operating system,
// the first path component always determines
// whether it is relative or absolute. On Unix,
// it is empty, so ['', 'foo'].join('/') == '/foo',
// '/foo'.split('/') == ['', 'foo'].
var parts = exports.split(path);
// split('') == []. '' is not absolute.
// split('/') == ['', ''] is absolute.
// split(?) == [''] does not occur.
if (parts.length == 0)
return false;
var first = parts[0];
if (/\bwindows\b/i.test(system.os)) {
return /:$/.test(first);
} else {
return first == "";
}
};
// XXX not standard
exports.isRelative = function (path) {
return !exports.isAbsolute(path);
};
/*** root
returns the Unix root path
or corresponding Windows drive
for a given path.
*/
// XXX not standard
exports.root = function (path) {
if (!exports.isAbsolute(path))
path = require("file").absolute(path);
var parts = exports.split(path);
return exports.join(parts[0], '');
};
exports.dirname = function (path) {
var parts = exports.split(path);
// XXX needs to be sensitive to the root for
// Windows compatibility
parts.pop();
return exports.join.apply(null, parts) || ".";
};
// XXX the extension argument is not standard
exports.basename = function (path, extension) {
var basename = path.split(exports.SEPARATORS_RE()).pop();
if (extension)
basename = basename.replace(
new RegExp(RegExp.escape(extension) + '$'),
''
);
return basename;
};
exports.extension = function (path) {
path = exports.basename(path);
path = path.replace(/^\.*/, '');
var index = path.lastIndexOf(".");
return index <= 0 ? "" : path.substring(index);
};
// XXX not standard, deprecated
exports.extname = function (path) {
system.log.warn('extname is deprecated in favor of extension');
return exports.extension(path);
};
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