| // 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. |
| |
| |
| var isWindows = process.platform === 'win32'; |
| var util = require('util'); |
| |
| |
| // 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 = !!result[2] || isUnc, // UNC paths are always absolute |
| 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 = !!result[2] || isUnc, // UNC paths are always absolute |
| tail = result[3], |
| trailingSlash = /[\\\/]$/.test(tail); |
| |
| // 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.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 = path.charAt(0) === '/', |
| 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.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]; |
| }; |
| |
| |
| exports.exists = util.deprecate(function(path, callback) { |
| require('fs').exists(path, callback); |
| }, 'path.exists is now called `fs.exists`.'); |
| |
| |
| exports.existsSync = util.deprecate(function(path) { |
| return require('fs').existsSync(path); |
| }, 'path.existsSync is now called `fs.existsSync`.'); |
| |
| |
| 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; |
| }; |
| } |