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Diffstat (limited to 'toolkit/jetpack/sdk/fs/path.js')
| -rw-r--r-- | toolkit/jetpack/sdk/fs/path.js | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/toolkit/jetpack/sdk/fs/path.js b/toolkit/jetpack/sdk/fs/path.js new file mode 100644 index 000000000..4474b2b4a --- /dev/null +++ b/toolkit/jetpack/sdk/fs/path.js @@ -0,0 +1,500 @@ +// 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; + }; +}
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