The Tor Browser: comparison addon-sdk/source/lib/sdk/fs/path.js

comparison: addon-sdk/source/lib/sdk/fs/path.js

addon-sdk/source/lib/sdk/fs/path.js

changeset 0: 6474c204b198

equal deleted inserted replaced

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+:a99a03b902ec
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+// Adapted version of:
+// https://github.com/joyent/node/blob/v0.11.3/lib/path.js
+// Shim process global from node.
+var process = Object.create(require('../system'));
+process.cwd = process.pathFor.bind(process, 'CurProcD');
+// Update original check in node `process.platform === 'win32'` since in SDK it's `winnt`.
+var isWindows = process.platform.indexOf('win') === 0;
+// resolves . and .. elements in a path array with directory names there
+// must be no slashes, empty elements, or device names (c:\) in the array
+// (so also no leading and trailing slashes - it does not distinguish
+// relative and absolute paths)
+function normalizeArray(parts, allowAboveRoot) {
+// if the path tries to go above the root, `up` ends up > 0
+var up = 0;
+for (var i = parts.length - 1; i >= 0; i--) {
+var last = parts[i];
+if (last === '.') {
+parts.splice(i, 1);
+} else if (last === '..') {
+parts.splice(i, 1);
+up++;
+} else if (up) {
+parts.splice(i, 1);
+up--;
+}
+}
+// if the path is allowed to go above the root, restore leading ..s
+if (allowAboveRoot) {
+for (; up--; up) {
+parts.unshift('..');
+}
+}
+return parts;
+}
+if (isWindows) {
+// Regex to split a windows path into three parts: [*, device, slash,
+// tail] windows-only
+var splitDeviceRe =
+/^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/;
+// Regex to split the tail part of the above into [*, dir, basename, ext]
+var splitTailRe =
+/^([\s\S]*?)((?:\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))(?:[\\\/]*)$/;
+// Function to split a filename into [root, dir, basename, ext]
+// windows version
+var splitPath = function(filename) {
+// Separate device+slash from tail
+var result = splitDeviceRe.exec(filename),
+device = (result[1] || '') + (result[2] || ''),
+tail = result[3] || '';
+// Split the tail into dir, basename and extension
+var result2 = splitTailRe.exec(tail),
+dir = result2[1],
+basename = result2[2],
+ext = result2[3];
+return [device, dir, basename, ext];
+};
+var normalizeUNCRoot = function(device) {
+return '\\\\' + device.replace(/^[\\\/]+/, '').replace(/[\\\/]+/g, '\\');
+};
+// path.resolve([from ...], to)
+// windows version
+exports.resolve = function() {
+var resolvedDevice = '',
+resolvedTail = '',
+resolvedAbsolute = false;
+for (var i = arguments.length - 1; i >= -1; i--) {
+var path;
+if (i >= 0) {
+path = arguments[i];
+} else if (!resolvedDevice) {
+path = process.cwd();
+} else {
+// Windows has the concept of drive-specific current working
+// directories. If we've resolved a drive letter but not yet an
+// absolute path, get cwd for that drive. We're sure the device is not
+// an unc path at this points, because unc paths are always absolute.
+path = process.env['=' + resolvedDevice];
+// Verify that a drive-local cwd was found and that it actually points
+// to our drive. If not, default to the drive's root.
+if (!path || path.substr(0, 3).toLowerCase() !==
+resolvedDevice.toLowerCase() + '\\') {
+path = resolvedDevice + '\\';
+}
+}
+// Skip empty and invalid entries
+if (typeof path !== 'string') {
+throw new TypeError('Arguments to path.resolve must be strings');
+} else if (!path) {
+continue;
+}
+var result = splitDeviceRe.exec(path),
+device = result[1] || '',
+isUnc = device && device.charAt(1) !== ':',
+isAbsolute = exports.isAbsolute(path),
+tail = result[3];
+if (device &&
+resolvedDevice &&
+device.toLowerCase() !== resolvedDevice.toLowerCase()) {
+// This path points to another device so it is not applicable
+continue;
+}
+if (!resolvedDevice) {
+resolvedDevice = device;
+}
+if (!resolvedAbsolute) {
+resolvedTail = tail + '\\' + resolvedTail;
+resolvedAbsolute = isAbsolute;
+}
+if (resolvedDevice && resolvedAbsolute) {
+break;
+}
+}
+// Convert slashes to backslashes when `resolvedDevice` points to an UNC
+// root. Also squash multiple slashes into a single one where appropriate.
+if (isUnc) {
+resolvedDevice = normalizeUNCRoot(resolvedDevice);
+}
+// At this point the path should be resolved to a full absolute path,
+// but handle relative paths to be safe (might happen when process.cwd()
+// fails)
+// Normalize the tail path
+function f(p) {
+return !!p;
+}
+resolvedTail = normalizeArray(resolvedTail.split(/[\\\/]+/).filter(f),
+!resolvedAbsolute).join('\\');
+return (resolvedDevice + (resolvedAbsolute ? '\\' : '') + resolvedTail) ||
+'.';
+};
+// windows version
+exports.normalize = function(path) {
+var result = splitDeviceRe.exec(path),
+device = result[1] || '',
+isUnc = device && device.charAt(1) !== ':',
+isAbsolute = exports.isAbsolute(path),
+tail = result[3],
+trailingSlash = /[\\\/]$/.test(tail);
+// If device is a drive letter, we'll normalize to lower case.
+if (device && device.charAt(1) === ':') {
+device = device[0].toLowerCase() + device.substr(1);
+}
+// Normalize the tail path
+tail = normalizeArray(tail.split(/[\\\/]+/).filter(function(p) {
+return !!p;
+}), !isAbsolute).join('\\');
+if (!tail && !isAbsolute) {
+tail = '.';
+}
+if (tail && trailingSlash) {
+tail += '\\';
+}
+// Convert slashes to backslashes when `device` points to an UNC root.
+// Also squash multiple slashes into a single one where appropriate.
+if (isUnc) {
+device = normalizeUNCRoot(device);
+}
+return device + (isAbsolute ? '\\' : '') + tail;
+};
+// windows version
+exports.isAbsolute = function(path) {
+var result = splitDeviceRe.exec(path),
+device = result[1] || '',
+isUnc = device && device.charAt(1) !== ':';
+// UNC paths are always absolute
+return !!result[2] || isUnc;
+};
+// windows version
+exports.join = function() {
+function f(p) {
+if (typeof p !== 'string') {
+throw new TypeError('Arguments to path.join must be strings');
+}
+return p;
+}
+var paths = Array.prototype.filter.call(arguments, f);
+var joined = paths.join('\\');
+// Make sure that the joined path doesn't start with two slashes, because
+// normalize() will mistake it for an UNC path then.
+//
+// This step is skipped when it is very clear that the user actually
+// intended to point at an UNC path. This is assumed when the first
+// non-empty string arguments starts with exactly two slashes followed by
+// at least one more non-slash character.
+//
+// Note that for normalize() to treat a path as an UNC path it needs to
+// have at least 2 components, so we don't filter for that here.
+// This means that the user can use join to construct UNC paths from
+// a server name and a share name; for example:
+//   path.join('//server', 'share') -> '\\\\server\\share\')
+if (!/^[\\\/]{2}[^\\\/]/.test(paths[0])) {
+joined = joined.replace(/^[\\\/]{2,}/, '\\');
+}
+return exports.normalize(joined);
+};
+// path.relative(from, to)
+// it will solve the relative path from 'from' to 'to', for instance:
+// from = 'C:\\orandea\\test\\aaa'
+// to = 'C:\\orandea\\impl\\bbb'
+// The output of the function should be: '..\\..\\impl\\bbb'
+// windows version
+exports.relative = function(from, to) {
+from = exports.resolve(from);
+to = exports.resolve(to);
+// windows is not case sensitive
+var lowerFrom = from.toLowerCase();
+var lowerTo = to.toLowerCase();
+function trim(arr) {
+var start = 0;
+for (; start < arr.length; start++) {
+if (arr[start] !== '') break;
+}
+var end = arr.length - 1;
+for (; end >= 0; end--) {
+if (arr[end] !== '') break;
+}
+if (start > end) return [];
+return arr.slice(start, end - start + 1);
+}
+var toParts = trim(to.split('\\'));
+var lowerFromParts = trim(lowerFrom.split('\\'));
+var lowerToParts = trim(lowerTo.split('\\'));
+var length = Math.min(lowerFromParts.length, lowerToParts.length);
+var samePartsLength = length;
+for (var i = 0; i < length; i++) {
+if (lowerFromParts[i] !== lowerToParts[i]) {
+samePartsLength = i;
+break;
+}
+}
+if (samePartsLength == 0) {
+return to;
+}
+var outputParts = [];
+for (var i = samePartsLength; i < lowerFromParts.length; i++) {
+outputParts.push('..');
+}
+outputParts = outputParts.concat(toParts.slice(samePartsLength));
+return outputParts.join('\\');
+};
+exports.sep = '\\';
+exports.delimiter = ';';
+} else /* posix */ {
+// Split a filename into [root, dir, basename, ext], unix version
+// 'root' is just a slash, or nothing.
+var splitPathRe =
+/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
+var splitPath = function(filename) {
+return splitPathRe.exec(filename).slice(1);
+};
+// path.resolve([from ...], to)
+// posix version
+exports.resolve = function() {
+var resolvedPath = '',
+resolvedAbsolute = false;
+for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
+var path = (i >= 0) ? arguments[i] : process.cwd();
+// Skip empty and invalid entries
+if (typeof path !== 'string') {
+throw new TypeError('Arguments to path.resolve must be strings');
+} else if (!path) {
+continue;
+}
+resolvedPath = path + '/' + resolvedPath;
+resolvedAbsolute = path.charAt(0) === '/';
+}
+// At this point the path should be resolved to a full absolute path, but
+// handle relative paths to be safe (might happen when process.cwd() fails)
+// Normalize the path
+resolvedPath = normalizeArray(resolvedPath.split('/').filter(function(p) {
+return !!p;
+}), !resolvedAbsolute).join('/');
+return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
+};
+// path.normalize(path)
+// posix version
+exports.normalize = function(path) {
+var isAbsolute = exports.isAbsolute(path),
+trailingSlash = path.substr(-1) === '/';
+// Normalize the path
+path = normalizeArray(path.split('/').filter(function(p) {
+return !!p;
+}), !isAbsolute).join('/');
+if (!path && !isAbsolute) {
+path = '.';
+}
+if (path && trailingSlash) {
+path += '/';
+}
+return (isAbsolute ? '/' : '') + path;
+};
+// posix version
+exports.isAbsolute = function(path) {
+return path.charAt(0) === '/';
+};
+// posix version
+exports.join = function() {
+var paths = Array.prototype.slice.call(arguments, 0);
+return exports.normalize(paths.filter(function(p, index) {
+if (typeof p !== 'string') {
+throw new TypeError('Arguments to path.join must be strings');
+}
+return p;
+}).join('/'));
+};
+// path.relative(from, to)
+// posix version
+exports.relative = function(from, to) {
+from = exports.resolve(from).substr(1);
+to = exports.resolve(to).substr(1);
+function trim(arr) {
+var start = 0;
+for (; start < arr.length; start++) {
+if (arr[start] !== '') break;
+}
+var end = arr.length - 1;
+for (; end >= 0; end--) {
+if (arr[end] !== '') break;
+}
+if (start > end) return [];
+return arr.slice(start, end - start + 1);
+}
+var fromParts = trim(from.split('/'));
+var toParts = trim(to.split('/'));
+var length = Math.min(fromParts.length, toParts.length);
+var samePartsLength = length;
+for (var i = 0; i < length; i++) {
+if (fromParts[i] !== toParts[i]) {
+samePartsLength = i;
+break;
+}
+}
+var outputParts = [];
+for (var i = samePartsLength; i < fromParts.length; i++) {
+outputParts.push('..');
+}
+outputParts = outputParts.concat(toParts.slice(samePartsLength));
+return outputParts.join('/');
+};
+exports.sep = '/';
+exports.delimiter = ':';
+}
+exports.dirname = function(path) {
+var result = splitPath(path),
+root = result[0],
+dir = result[1];
+if (!root && !dir) {
+// No dirname whatsoever
+return '.';
+}
+if (dir) {
+// It has a dirname, strip trailing slash
+dir = dir.substr(0, dir.length - 1);
+}
+return root + dir;
+};
+exports.basename = function(path, ext) {
+var f = splitPath(path)[2];
+// TODO: make this comparison case-insensitive on windows?
+if (ext && f.substr(-1 * ext.length) === ext) {
+f = f.substr(0, f.length - ext.length);
+}
+return f;
+};
+exports.extname = function(path) {
+return splitPath(path)[3];
+};
+if (isWindows) {
+exports._makeLong = function(path) {
+// Note: this will *probably* throw somewhere.
+if (typeof path !== 'string')
+return path;
+if (!path) {
+return '';
+}
+var resolvedPath = exports.resolve(path);
+if (/^[a-zA-Z]\:\\/.test(resolvedPath)) {
+// path is local filesystem path, which needs to be converted
+// to long UNC path.
+return '\\\\?\\' + resolvedPath;
+} else if (/^\\\\[^?.]/.test(resolvedPath)) {
+// path is network UNC path, which needs to be converted
+// to long UNC path.
+return '\\\\?\\UNC\\' + resolvedPath.substring(2);
+}
+return path;
+};
+} else {
+exports._makeLong = function(path) {
+return path;
+};
+}