127 lines
3.7 KiB
JavaScript
127 lines
3.7 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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// https://github.com/joyent/node/blob/41e53e557992a7d552a8e23de035f9463da25c99/lib/path.js
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define(function(require) {
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// Split a filename into [root, dir, basename, ext], unix version
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// 'root' is just a slash, or nothing.
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var splitPathRe =
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/^(\/?)([\s\S]+\/(?!$)|\/)?((?:\.{1,2}$|[\s\S]+?)?(\.[^.\/]*)?)$/;
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var splitPath = function(filename) {
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var result = splitPathRe.exec(filename);
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return [result[1] || '', result[2] || '', result[3] || '', result[4] || ''];
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};
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// resolves . and .. elements in a path array with directory names there
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// must be no slashes, empty elements, or device names (c:\) in the array
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// (so also no leading and trailing slashes - it does not distinguish
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// relative and absolute paths)
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function normalizeArray(parts, allowAboveRoot) {
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// if the path tries to go above the root, `up` ends up > 0
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var up = 0;
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for (var i = parts.length - 1; i >= 0; i--) {
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var last = parts[i];
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if (last === '.') {
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parts.splice(i, 1);
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} else if (last === '..') {
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parts.splice(i, 1);
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up++;
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} else if (up) {
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parts.splice(i, 1);
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up--;
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}
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}
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// if the path is allowed to go above the root, restore leading ..s
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if (allowAboveRoot) {
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for (; up--; up) {
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parts.unshift('..');
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}
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}
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return parts;
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}
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// path.normalize(path)
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// posix version
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function normalize(path) {
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var isAbsolute = path.charAt(0) === '/';
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// var trailingSlash = path.substr(-1) === '/';
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// Normalize the path
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path = normalizeArray(path.split('/').filter(function(p) {
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return !!p;
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}), !isAbsolute).join('/');
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if (!path && !isAbsolute) {
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path = '.';
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}
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/*
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if (path && trailingSlash) {
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path += '/';
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}
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*/
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return (isAbsolute ? '/' : '') + path;
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};
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function dirname(path) {
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var result = splitPath(path),
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root = result[0],
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dir = result[1];
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if (!root && !dir) {
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// No dirname whatsoever
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return '.';
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}
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if (dir) {
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// It has a dirname, strip trailing slash
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dir = dir.substr(0, dir.length - 1);
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}
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return root + dir;
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};
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function basename(path, ext) {
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var f = splitPath(path)[2];
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// TODO: make this comparison case-insensitive on windows?
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if (ext && f.substr(-1 * ext.length) === ext) {
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f = f.substr(0, f.length - ext.length);
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}
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return f;
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};
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function isAbsolute(path) {
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return path.charAt(0) === '/';
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}
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return {
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normalize: normalize,
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dirname: dirname,
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basename: basename,
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isAbsolute: isAbsolute
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}
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}); |