629 lines
16 KiB
JavaScript
629 lines
16 KiB
JavaScript
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// 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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'use strict';
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var isWindows = process.platform === 'win32';
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var util = require('util');
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// resolves . and .. elements in a path array with directory names there
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// must be no slashes 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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var res = [];
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for (var i = 0; i < parts.length; i++) {
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var p = parts[i];
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// ignore empty parts
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if (!p || p === '.')
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continue;
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if (p === '..') {
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if (res.length && res[res.length - 1] !== '..') {
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res.pop();
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} else if (allowAboveRoot) {
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res.push('..');
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}
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} else {
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res.push(p);
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}
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}
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return res;
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}
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// returns an array with empty elements removed from either end of the input
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// array or the original array if no elements need to be removed
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function trimArray(arr) {
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var lastIndex = arr.length - 1;
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var start = 0;
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for (; start <= lastIndex; start++) {
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if (arr[start])
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break;
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}
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var end = lastIndex;
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for (; end >= 0; end--) {
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if (arr[end])
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break;
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}
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if (start === 0 && end === lastIndex)
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return arr;
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if (start > end)
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return [];
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return arr.slice(start, end + 1);
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}
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// Regex to split a windows path into three parts: [*, device, slash,
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// tail] windows-only
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var splitDeviceRe =
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/^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/;
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// Regex to split the tail part of the above into [*, dir, basename, ext]
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var splitTailRe =
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/^([\s\S]*?)((?:\.{1,2}|[^\\\/]+?|)(\.[^.\/\\]*|))(?:[\\\/]*)$/;
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var win32 = {};
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// Function to split a filename into [root, dir, basename, ext]
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function win32SplitPath(filename) {
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// Separate device+slash from tail
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var result = splitDeviceRe.exec(filename),
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device = (result[1] || '') + (result[2] || ''),
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tail = result[3] || '';
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// Split the tail into dir, basename and extension
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var result2 = splitTailRe.exec(tail),
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dir = result2[1],
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basename = result2[2],
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ext = result2[3];
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return [device, dir, basename, ext];
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}
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function win32StatPath(path) {
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var result = splitDeviceRe.exec(path),
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device = result[1] || '',
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isUnc = !!device && device[1] !== ':';
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return {
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device: device,
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isUnc: isUnc,
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isAbsolute: isUnc || !!result[2], // UNC paths are always absolute
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tail: result[3]
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};
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}
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function normalizeUNCRoot(device) {
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return '\\\\' + device.replace(/^[\\\/]+/, '').replace(/[\\\/]+/g, '\\');
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}
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// path.resolve([from ...], to)
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win32.resolve = function() {
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var resolvedDevice = '',
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resolvedTail = '',
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resolvedAbsolute = false;
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for (var i = arguments.length - 1; i >= -1; i--) {
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var path;
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if (i >= 0) {
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path = arguments[i];
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} else if (!resolvedDevice) {
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path = process.cwd();
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} else {
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// Windows has the concept of drive-specific current working
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// directories. If we've resolved a drive letter but not yet an
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// absolute path, get cwd for that drive. We're sure the device is not
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// an unc path at this points, because unc paths are always absolute.
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path = process.env['=' + resolvedDevice];
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// Verify that a drive-local cwd was found and that it actually points
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// to our drive. If not, default to the drive's root.
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if (!path || path.substr(0, 3).toLowerCase() !==
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resolvedDevice.toLowerCase() + '\\') {
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path = resolvedDevice + '\\';
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}
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}
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// Skip empty and invalid entries
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if (!util.isString(path)) {
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throw new TypeError('Arguments to path.resolve must be strings');
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} else if (!path) {
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continue;
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}
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var result = win32StatPath(path),
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device = result.device,
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isUnc = result.isUnc,
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isAbsolute = result.isAbsolute,
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tail = result.tail;
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if (device &&
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resolvedDevice &&
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device.toLowerCase() !== resolvedDevice.toLowerCase()) {
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// This path points to another device so it is not applicable
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continue;
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}
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if (!resolvedDevice) {
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resolvedDevice = device;
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}
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if (!resolvedAbsolute) {
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resolvedTail = tail + '\\' + resolvedTail;
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resolvedAbsolute = isAbsolute;
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}
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if (resolvedDevice && resolvedAbsolute) {
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break;
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}
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}
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// Convert slashes to backslashes when `resolvedDevice` points to an UNC
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// root. Also squash multiple slashes into a single one where appropriate.
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if (isUnc) {
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resolvedDevice = normalizeUNCRoot(resolvedDevice);
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}
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// At this point the path should be resolved to a full absolute path,
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// but handle relative paths to be safe (might happen when process.cwd()
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// fails)
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// Normalize the tail path
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resolvedTail = normalizeArray(resolvedTail.split(/[\\\/]+/),
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!resolvedAbsolute).join('\\');
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return (resolvedDevice + (resolvedAbsolute ? '\\' : '') + resolvedTail) ||
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'.';
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};
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win32.normalize = function(path) {
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var result = win32StatPath(path),
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device = result.device,
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isUnc = result.isUnc,
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isAbsolute = result.isAbsolute,
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tail = result.tail,
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trailingSlash = /[\\\/]$/.test(tail);
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// Normalize the tail path
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tail = normalizeArray(tail.split(/[\\\/]+/), !isAbsolute).join('\\');
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if (!tail && !isAbsolute) {
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tail = '.';
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}
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if (tail && trailingSlash) {
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tail += '\\';
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}
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// Convert slashes to backslashes when `device` points to an UNC root.
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// Also squash multiple slashes into a single one where appropriate.
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if (isUnc) {
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device = normalizeUNCRoot(device);
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}
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return device + (isAbsolute ? '\\' : '') + tail;
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};
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win32.isAbsolute = function(path) {
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return win32StatPath(path).isAbsolute;
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};
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win32.join = function() {
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var paths = [];
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for (var i = 0; i < arguments.length; i++) {
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var arg = arguments[i];
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if (!util.isString(arg)) {
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throw new TypeError('Arguments to path.join must be strings');
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}
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if (arg) {
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paths.push(arg);
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}
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}
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var joined = paths.join('\\');
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// Make sure that the joined path doesn't start with two slashes, because
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// normalize() will mistake it for an UNC path then.
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//
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// This step is skipped when it is very clear that the user actually
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// intended to point at an UNC path. This is assumed when the first
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// non-empty string arguments starts with exactly two slashes followed by
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// at least one more non-slash character.
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//
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// Note that for normalize() to treat a path as an UNC path it needs to
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// have at least 2 components, so we don't filter for that here.
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// This means that the user can use join to construct UNC paths from
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// a server name and a share name; for example:
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// path.join('//server', 'share') -> '\\\\server\\share\')
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if (!/^[\\\/]{2}[^\\\/]/.test(paths[0])) {
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joined = joined.replace(/^[\\\/]{2,}/, '\\');
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}
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return win32.normalize(joined);
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};
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// path.relative(from, to)
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// it will solve the relative path from 'from' to 'to', for instance:
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// from = 'C:\\orandea\\test\\aaa'
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// to = 'C:\\orandea\\impl\\bbb'
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// The output of the function should be: '..\\..\\impl\\bbb'
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win32.relative = function(from, to) {
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from = win32.resolve(from);
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to = win32.resolve(to);
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// windows is not case sensitive
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var lowerFrom = from.toLowerCase();
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var lowerTo = to.toLowerCase();
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var toParts = trimArray(to.split('\\'));
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var lowerFromParts = trimArray(lowerFrom.split('\\'));
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var lowerToParts = trimArray(lowerTo.split('\\'));
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var length = Math.min(lowerFromParts.length, lowerToParts.length);
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var samePartsLength = length;
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for (var i = 0; i < length; i++) {
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if (lowerFromParts[i] !== lowerToParts[i]) {
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samePartsLength = i;
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break;
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}
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}
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if (samePartsLength == 0) {
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return to;
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}
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var outputParts = [];
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for (var i = samePartsLength; i < lowerFromParts.length; i++) {
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outputParts.push('..');
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}
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outputParts = outputParts.concat(toParts.slice(samePartsLength));
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return outputParts.join('\\');
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};
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win32._makeLong = function(path) {
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// Note: this will *probably* throw somewhere.
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if (!util.isString(path))
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return path;
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if (!path) {
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return '';
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}
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var resolvedPath = win32.resolve(path);
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if (/^[a-zA-Z]\:\\/.test(resolvedPath)) {
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// path is local filesystem path, which needs to be converted
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// to long UNC path.
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return '\\\\?\\' + resolvedPath;
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} else if (/^\\\\[^?.]/.test(resolvedPath)) {
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// path is network UNC path, which needs to be converted
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// to long UNC path.
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return '\\\\?\\UNC\\' + resolvedPath.substring(2);
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}
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return path;
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};
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win32.dirname = function(path) {
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var result = win32SplitPath(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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win32.basename = function(path, ext) {
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var f = win32SplitPath(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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win32.extname = function(path) {
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return win32SplitPath(path)[3];
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};
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win32.format = function(pathObject) {
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if (!util.isObject(pathObject)) {
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throw new TypeError(
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"Parameter 'pathObject' must be an object, not " + typeof pathObject
|
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);
|
||
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}
|
||
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var root = pathObject.root || '';
|
||
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||
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if (!util.isString(root)) {
|
||
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throw new TypeError(
|
||
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"'pathObject.root' must be a string or undefined, not " +
|
||
|
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typeof pathObject.root
|
||
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);
|
||
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}
|
||
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var dir = pathObject.dir;
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var base = pathObject.base || '';
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if (!dir) {
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return base;
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}
|
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if (dir[dir.length - 1] === win32.sep) {
|
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return dir + base;
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||
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}
|
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return dir + win32.sep + base;
|
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};
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||
|
|
win32.parse = function(pathString) {
|
||
|
|
if (!util.isString(pathString)) {
|
||
|
|
throw new TypeError(
|
||
|
|
"Parameter 'pathString' must be a string, not " + typeof pathString
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var allParts = win32SplitPath(pathString);
|
||
|
|
if (!allParts || allParts.length !== 4) {
|
||
|
|
throw new TypeError("Invalid path '" + pathString + "'");
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
root: allParts[0],
|
||
|
|
dir: allParts[0] + allParts[1].slice(0, -1),
|
||
|
|
base: allParts[2],
|
||
|
|
ext: allParts[3],
|
||
|
|
name: allParts[2].slice(0, allParts[2].length - allParts[3].length)
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
win32.sep = '\\';
|
||
|
|
win32.delimiter = ';';
|
||
|
|
|
||
|
|
|
||
|
|
// Split a filename into [root, dir, basename, ext], unix version
|
||
|
|
// 'root' is just a slash, or nothing.
|
||
|
|
var splitPathRe =
|
||
|
|
/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
|
||
|
|
var posix = {};
|
||
|
|
|
||
|
|
|
||
|
|
function posixSplitPath(filename) {
|
||
|
|
return splitPathRe.exec(filename).slice(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// path.resolve([from ...], to)
|
||
|
|
// posix version
|
||
|
|
posix.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 (!util.isString(path)) {
|
||
|
|
throw new TypeError('Arguments to path.resolve must be strings');
|
||
|
|
} else if (!path) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
resolvedPath = path + '/' + resolvedPath;
|
||
|
|
resolvedAbsolute = path[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('/'),
|
||
|
|
!resolvedAbsolute).join('/');
|
||
|
|
|
||
|
|
return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
|
||
|
|
};
|
||
|
|
|
||
|
|
// path.normalize(path)
|
||
|
|
// posix version
|
||
|
|
posix.normalize = function(path) {
|
||
|
|
var isAbsolute = posix.isAbsolute(path),
|
||
|
|
trailingSlash = path && path[path.length - 1] === '/';
|
||
|
|
|
||
|
|
// Normalize the path
|
||
|
|
path = normalizeArray(path.split('/'), !isAbsolute).join('/');
|
||
|
|
|
||
|
|
if (!path && !isAbsolute) {
|
||
|
|
path = '.';
|
||
|
|
}
|
||
|
|
if (path && trailingSlash) {
|
||
|
|
path += '/';
|
||
|
|
}
|
||
|
|
|
||
|
|
return (isAbsolute ? '/' : '') + path;
|
||
|
|
};
|
||
|
|
|
||
|
|
// posix version
|
||
|
|
posix.isAbsolute = function(path) {
|
||
|
|
return path.charAt(0) === '/';
|
||
|
|
};
|
||
|
|
|
||
|
|
// posix version
|
||
|
|
posix.join = function() {
|
||
|
|
var path = '';
|
||
|
|
for (var i = 0; i < arguments.length; i++) {
|
||
|
|
var segment = arguments[i];
|
||
|
|
if (!util.isString(segment)) {
|
||
|
|
throw new TypeError('Arguments to path.join must be strings');
|
||
|
|
}
|
||
|
|
if (segment) {
|
||
|
|
if (!path) {
|
||
|
|
path += segment;
|
||
|
|
} else {
|
||
|
|
path += '/' + segment;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return posix.normalize(path);
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
// path.relative(from, to)
|
||
|
|
// posix version
|
||
|
|
posix.relative = function(from, to) {
|
||
|
|
from = posix.resolve(from).substr(1);
|
||
|
|
to = posix.resolve(to).substr(1);
|
||
|
|
|
||
|
|
var fromParts = trimArray(from.split('/'));
|
||
|
|
var toParts = trimArray(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('/');
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix._makeLong = function(path) {
|
||
|
|
return path;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.dirname = function(path) {
|
||
|
|
var result = posixSplitPath(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;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.basename = function(path, ext) {
|
||
|
|
var f = posixSplitPath(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;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.extname = function(path) {
|
||
|
|
return posixSplitPath(path)[3];
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.format = function(pathObject) {
|
||
|
|
if (!util.isObject(pathObject)) {
|
||
|
|
throw new TypeError(
|
||
|
|
"Parameter 'pathObject' must be an object, not " + typeof pathObject
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
var root = pathObject.root || '';
|
||
|
|
|
||
|
|
if (!util.isString(root)) {
|
||
|
|
throw new TypeError(
|
||
|
|
"'pathObject.root' must be a string or undefined, not " +
|
||
|
|
typeof pathObject.root
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
var dir = pathObject.dir ? pathObject.dir + posix.sep : '';
|
||
|
|
var base = pathObject.base || '';
|
||
|
|
return dir + base;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.parse = function(pathString) {
|
||
|
|
if (!util.isString(pathString)) {
|
||
|
|
throw new TypeError(
|
||
|
|
"Parameter 'pathString' must be a string, not " + typeof pathString
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var allParts = posixSplitPath(pathString);
|
||
|
|
if (!allParts || allParts.length !== 4) {
|
||
|
|
throw new TypeError("Invalid path '" + pathString + "'");
|
||
|
|
}
|
||
|
|
allParts[1] = allParts[1] || '';
|
||
|
|
allParts[2] = allParts[2] || '';
|
||
|
|
allParts[3] = allParts[3] || '';
|
||
|
|
|
||
|
|
return {
|
||
|
|
root: allParts[0],
|
||
|
|
dir: allParts[0] + allParts[1].slice(0, -1),
|
||
|
|
base: allParts[2],
|
||
|
|
ext: allParts[3],
|
||
|
|
name: allParts[2].slice(0, allParts[2].length - allParts[3].length)
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
posix.sep = '/';
|
||
|
|
posix.delimiter = ':';
|
||
|
|
|
||
|
|
|
||
|
|
if (isWindows)
|
||
|
|
module.exports = win32;
|
||
|
|
else /* posix */
|
||
|
|
module.exports = posix;
|
||
|
|
|
||
|
|
module.exports.posix = posix;
|
||
|
|
module.exports.win32 = win32;
|