1376 lines
41 KiB
JavaScript
1376 lines
41 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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'use strict';
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const { ERR_INVALID_ARG_TYPE } = require('internal/errors').codes;
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const {
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CHAR_UPPERCASE_A,
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CHAR_LOWERCASE_A,
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CHAR_UPPERCASE_Z,
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CHAR_LOWERCASE_Z,
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CHAR_DOT,
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CHAR_FORWARD_SLASH,
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CHAR_BACKWARD_SLASH,
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CHAR_COLON,
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CHAR_QUESTION_MARK,
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} = require('internal/constants');
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const { validateString } = require('internal/validators');
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function isPathSeparator(code) {
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return code === CHAR_FORWARD_SLASH || code === CHAR_BACKWARD_SLASH;
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}
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function isPosixPathSeparator(code) {
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return code === CHAR_FORWARD_SLASH;
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}
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function isWindowsDeviceRoot(code) {
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return (code >= CHAR_UPPERCASE_A && code <= CHAR_UPPERCASE_Z) ||
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(code >= CHAR_LOWERCASE_A && code <= CHAR_LOWERCASE_Z);
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}
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// Resolves . and .. elements in a path with directory names
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function normalizeString(path, allowAboveRoot, separator, isPathSeparator) {
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let res = '';
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let lastSegmentLength = 0;
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let lastSlash = -1;
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let dots = 0;
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let code = 0;
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for (let i = 0; i <= path.length; ++i) {
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if (i < path.length)
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code = path.charCodeAt(i);
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else if (isPathSeparator(code))
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break;
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else
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code = CHAR_FORWARD_SLASH;
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if (isPathSeparator(code)) {
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if (lastSlash === i - 1 || dots === 1) {
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// NOOP
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} else if (dots === 2) {
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if (res.length < 2 || lastSegmentLength !== 2 ||
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res.charCodeAt(res.length - 1) !== CHAR_DOT ||
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res.charCodeAt(res.length - 2) !== CHAR_DOT) {
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if (res.length > 2) {
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const lastSlashIndex = res.lastIndexOf(separator);
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if (lastSlashIndex === -1) {
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res = '';
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lastSegmentLength = 0;
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} else {
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res = res.slice(0, lastSlashIndex);
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lastSegmentLength = res.length - 1 - res.lastIndexOf(separator);
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}
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lastSlash = i;
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dots = 0;
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continue;
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} else if (res.length !== 0) {
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res = '';
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lastSegmentLength = 0;
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lastSlash = i;
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dots = 0;
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continue;
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}
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}
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if (allowAboveRoot) {
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res += res.length > 0 ? `${separator}..` : '..';
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lastSegmentLength = 2;
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}
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} else {
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if (res.length > 0)
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res += `${separator}${path.slice(lastSlash + 1, i)}`;
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else
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res = path.slice(lastSlash + 1, i);
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lastSegmentLength = i - lastSlash - 1;
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}
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lastSlash = i;
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dots = 0;
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} else if (code === CHAR_DOT && dots !== -1) {
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++dots;
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} else {
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dots = -1;
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}
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}
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return res;
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}
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function _format(sep, pathObject) {
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if (pathObject === null || typeof pathObject !== 'object') {
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throw new ERR_INVALID_ARG_TYPE('pathObject', 'Object', pathObject);
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}
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const dir = pathObject.dir || pathObject.root;
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const base = pathObject.base ||
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`${pathObject.name || ''}${pathObject.ext || ''}`;
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if (!dir) {
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return base;
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}
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return dir === pathObject.root ? `${dir}${base}` : `${dir}${sep}${base}`;
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}
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const win32 = {
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// path.resolve([from ...], to)
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resolve(...args) {
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let resolvedDevice = '';
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let resolvedTail = '';
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let resolvedAbsolute = false;
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for (let i = args.length - 1; i >= -1; i--) {
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let path;
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if (i >= 0) {
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path = args[i];
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validateString(path, 'path');
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// Skip empty entries
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if (path.length === 0) {
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continue;
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}
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} else if (resolvedDevice.length === 0) {
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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, or the process cwd if
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// the drive cwd is not available. We're sure the device is not
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// a UNC path at this points, because UNC paths are always absolute.
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path = process.env[`=${resolvedDevice}`] || process.cwd();
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// Verify that a cwd was found and that it actually points
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// to our drive. If not, default to the drive's root.
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if (path === undefined ||
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(path.slice(0, 2).toLowerCase() !== resolvedDevice.toLowerCase() &&
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path.charCodeAt(2) === CHAR_BACKWARD_SLASH)) {
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path = `${resolvedDevice}\\`;
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}
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}
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const len = path.length;
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let rootEnd = 0;
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let device = '';
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let isAbsolute = false;
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const code = path.charCodeAt(0);
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// Try to match a root
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if (len === 1) {
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if (isPathSeparator(code)) {
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// `path` contains just a path separator
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rootEnd = 1;
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isAbsolute = true;
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}
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} else if (isPathSeparator(code)) {
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// Possible UNC root
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// If we started with a separator, we know we at least have an
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// absolute path of some kind (UNC or otherwise)
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isAbsolute = true;
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if (isPathSeparator(path.charCodeAt(1))) {
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// Matched double path separator at beginning
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let j = 2;
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let last = j;
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// Match 1 or more non-path separators
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while (j < len && !isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j < len && j !== last) {
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const firstPart = path.slice(last, j);
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// Matched!
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last = j;
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// Match 1 or more path separators
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while (j < len && isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j < len && j !== last) {
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// Matched!
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last = j;
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// Match 1 or more non-path separators
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while (j < len && !isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j === len || j !== last) {
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// We matched a UNC root
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device = `\\\\${firstPart}\\${path.slice(last, j)}`;
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rootEnd = j;
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}
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}
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}
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} else {
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rootEnd = 1;
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}
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} else if (isWindowsDeviceRoot(code) &&
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path.charCodeAt(1) === CHAR_COLON) {
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// Possible device root
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device = path.slice(0, 2);
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rootEnd = 2;
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if (len > 2 && isPathSeparator(path.charCodeAt(2))) {
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// Treat separator following drive name as an absolute path
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// indicator
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isAbsolute = true;
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rootEnd = 3;
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}
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}
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if (device.length > 0) {
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if (resolvedDevice.length > 0) {
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if (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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} else {
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resolvedDevice = device;
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}
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}
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if (resolvedAbsolute) {
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if (resolvedDevice.length > 0)
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break;
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} else {
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resolvedTail = `${path.slice(rootEnd)}\\${resolvedTail}`;
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resolvedAbsolute = isAbsolute;
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if (isAbsolute && resolvedDevice.length > 0) {
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break;
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}
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}
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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 = normalizeString(resolvedTail, !resolvedAbsolute, '\\',
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isPathSeparator);
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return resolvedAbsolute ?
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`${resolvedDevice}\\${resolvedTail}` :
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`${resolvedDevice}${resolvedTail}` || '.';
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},
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normalize(path) {
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validateString(path, 'path');
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const len = path.length;
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if (len === 0)
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return '.';
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let rootEnd = 0;
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let device;
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let isAbsolute = false;
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const code = path.charCodeAt(0);
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// Try to match a root
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if (len === 1) {
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// `path` contains just a single char, exit early to avoid
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// unnecessary work
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return isPosixPathSeparator(code) ? '\\' : path;
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}
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if (isPathSeparator(code)) {
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// Possible UNC root
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// If we started with a separator, we know we at least have an absolute
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// path of some kind (UNC or otherwise)
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isAbsolute = true;
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if (isPathSeparator(path.charCodeAt(1))) {
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// Matched double path separator at beginning
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let j = 2;
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let last = j;
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// Match 1 or more non-path separators
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while (j < len && !isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j < len && j !== last) {
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const firstPart = path.slice(last, j);
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// Matched!
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last = j;
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// Match 1 or more path separators
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while (j < len && isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j < len && j !== last) {
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// Matched!
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last = j;
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// Match 1 or more non-path separators
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while (j < len && !isPathSeparator(path.charCodeAt(j))) {
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j++;
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}
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if (j === len) {
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// We matched a UNC root only
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// Return the normalized version of the UNC root since there
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// is nothing left to process
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return `\\\\${firstPart}\\${path.slice(last)}\\`;
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}
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if (j !== last) {
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// We matched a UNC root with leftovers
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device = `\\\\${firstPart}\\${path.slice(last, j)}`;
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rootEnd = j;
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}
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}
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}
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} else {
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rootEnd = 1;
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}
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} else if (isWindowsDeviceRoot(code) && path.charCodeAt(1) === CHAR_COLON) {
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// Possible device root
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device = path.slice(0, 2);
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rootEnd = 2;
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if (len > 2 && isPathSeparator(path.charCodeAt(2))) {
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// Treat separator following drive name as an absolute path
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// indicator
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isAbsolute = true;
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rootEnd = 3;
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}
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}
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let tail = rootEnd < len ?
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normalizeString(path.slice(rootEnd), !isAbsolute, '\\', isPathSeparator) :
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'';
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if (tail.length === 0 && !isAbsolute)
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tail = '.';
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if (tail.length > 0 && isPathSeparator(path.charCodeAt(len - 1)))
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tail += '\\';
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if (device === undefined) {
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return isAbsolute ? `\\${tail}` : tail;
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}
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return isAbsolute ? `${device}\\${tail}` : `${device}${tail}`;
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},
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isAbsolute(path) {
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validateString(path, 'path');
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const len = path.length;
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if (len === 0)
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return false;
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const code = path.charCodeAt(0);
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return isPathSeparator(code) ||
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// Possible device root
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(len > 2 &&
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isWindowsDeviceRoot(code) &&
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path.charCodeAt(1) === CHAR_COLON &&
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isPathSeparator(path.charCodeAt(2)));
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},
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join(...args) {
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if (args.length === 0)
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return '.';
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let joined;
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let firstPart;
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for (let i = 0; i < args.length; ++i) {
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const arg = args[i];
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validateString(arg, 'path');
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if (arg.length > 0) {
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if (joined === undefined)
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joined = firstPart = arg;
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else
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joined += `\\${arg}`;
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}
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}
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if (joined === undefined)
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return '.';
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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 a 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 a 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 a 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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let needsReplace = true;
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let slashCount = 0;
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if (isPathSeparator(firstPart.charCodeAt(0))) {
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++slashCount;
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const firstLen = firstPart.length;
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if (firstLen > 1 && isPathSeparator(firstPart.charCodeAt(1))) {
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++slashCount;
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if (firstLen > 2) {
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if (isPathSeparator(firstPart.charCodeAt(2)))
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++slashCount;
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else {
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// We matched a UNC path in the first part
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needsReplace = false;
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}
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}
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}
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}
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if (needsReplace) {
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// Find any more consecutive slashes we need to replace
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while (slashCount < joined.length &&
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isPathSeparator(joined.charCodeAt(slashCount))) {
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slashCount++;
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}
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// Replace the slashes if needed
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if (slashCount >= 2)
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joined = `\\${joined.slice(slashCount)}`;
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}
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return win32.normalize(joined);
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},
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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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relative(from, to) {
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validateString(from, 'from');
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validateString(to, 'to');
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if (from === to)
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return '';
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const fromOrig = win32.resolve(from);
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const toOrig = win32.resolve(to);
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if (fromOrig === toOrig)
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return '';
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from = fromOrig.toLowerCase();
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to = toOrig.toLowerCase();
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if (from === to)
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return '';
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|
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// Trim any leading backslashes
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let fromStart = 0;
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while (fromStart < from.length &&
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from.charCodeAt(fromStart) === CHAR_BACKWARD_SLASH) {
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fromStart++;
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}
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// Trim trailing backslashes (applicable to UNC paths only)
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let fromEnd = from.length;
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while (fromEnd - 1 > fromStart &&
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from.charCodeAt(fromEnd - 1) === CHAR_BACKWARD_SLASH) {
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fromEnd--;
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}
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const fromLen = fromEnd - fromStart;
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|
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// Trim any leading backslashes
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let toStart = 0;
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while (toStart < to.length &&
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to.charCodeAt(toStart) === CHAR_BACKWARD_SLASH) {
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toStart++;
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}
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// Trim trailing backslashes (applicable to UNC paths only)
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let toEnd = to.length;
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while (toEnd - 1 > toStart &&
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to.charCodeAt(toEnd - 1) === CHAR_BACKWARD_SLASH) {
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toEnd--;
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}
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const toLen = toEnd - toStart;
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// Compare paths to find the longest common path from root
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const length = fromLen < toLen ? fromLen : toLen;
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let lastCommonSep = -1;
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let i = 0;
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for (; i < length; i++) {
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const fromCode = from.charCodeAt(fromStart + i);
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if (fromCode !== to.charCodeAt(toStart + i))
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break;
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else if (fromCode === CHAR_BACKWARD_SLASH)
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lastCommonSep = i;
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}
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// We found a mismatch before the first common path separator was seen, so
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// return the original `to`.
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if (i !== length) {
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if (lastCommonSep === -1)
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return toOrig;
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} else {
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if (toLen > length) {
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if (to.charCodeAt(toStart + i) === CHAR_BACKWARD_SLASH) {
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// We get here if `from` is the exact base path for `to`.
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// For example: from='C:\\foo\\bar'; to='C:\\foo\\bar\\baz'
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return toOrig.slice(toStart + i + 1);
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}
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if (i === 2) {
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// We get here if `from` is the device root.
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// For example: from='C:\\'; to='C:\\foo'
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return toOrig.slice(toStart + i);
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}
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}
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if (fromLen > length) {
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if (from.charCodeAt(fromStart + i) === CHAR_BACKWARD_SLASH) {
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// We get here if `to` is the exact base path for `from`.
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// For example: from='C:\\foo\\bar'; to='C:\\foo'
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lastCommonSep = i;
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} else if (i === 2) {
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// We get here if `to` is the device root.
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// For example: from='C:\\foo\\bar'; to='C:\\'
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lastCommonSep = 3;
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}
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}
|
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if (lastCommonSep === -1)
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lastCommonSep = 0;
|
|
}
|
|
|
|
let out = '';
|
|
// Generate the relative path based on the path difference between `to` and
|
|
// `from`
|
|
for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
|
|
if (i === fromEnd || from.charCodeAt(i) === CHAR_BACKWARD_SLASH) {
|
|
out += out.length === 0 ? '..' : '\\..';
|
|
}
|
|
}
|
|
|
|
toStart += lastCommonSep;
|
|
|
|
// Lastly, append the rest of the destination (`to`) path that comes after
|
|
// the common path parts
|
|
if (out.length > 0)
|
|
return `${out}${toOrig.slice(toStart, toEnd)}`;
|
|
|
|
if (toOrig.charCodeAt(toStart) === CHAR_BACKWARD_SLASH)
|
|
++toStart;
|
|
return toOrig.slice(toStart, toEnd);
|
|
},
|
|
|
|
toNamespacedPath(path) {
|
|
// Note: this will *probably* throw somewhere.
|
|
if (typeof path !== 'string')
|
|
return path;
|
|
|
|
if (path.length === 0) {
|
|
return '';
|
|
}
|
|
|
|
const resolvedPath = win32.resolve(path);
|
|
|
|
if (resolvedPath.length <= 2)
|
|
return path;
|
|
|
|
if (resolvedPath.charCodeAt(0) === CHAR_BACKWARD_SLASH) {
|
|
// Possible UNC root
|
|
if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) {
|
|
const code = resolvedPath.charCodeAt(2);
|
|
if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) {
|
|
// Matched non-long UNC root, convert the path to a long UNC path
|
|
return `\\\\?\\UNC\\${resolvedPath.slice(2)}`;
|
|
}
|
|
}
|
|
} else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0)) &&
|
|
resolvedPath.charCodeAt(1) === CHAR_COLON &&
|
|
resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH) {
|
|
// Matched device root, convert the path to a long UNC path
|
|
return `\\\\?\\${resolvedPath}`;
|
|
}
|
|
|
|
return path;
|
|
},
|
|
|
|
dirname(path) {
|
|
validateString(path, 'path');
|
|
const len = path.length;
|
|
if (len === 0)
|
|
return '.';
|
|
let rootEnd = -1;
|
|
let offset = 0;
|
|
const code = path.charCodeAt(0);
|
|
|
|
if (len === 1) {
|
|
// `path` contains just a path separator, exit early to avoid
|
|
// unnecessary work or a dot.
|
|
return isPathSeparator(code) ? path : '.';
|
|
}
|
|
|
|
// Try to match a root
|
|
if (isPathSeparator(code)) {
|
|
// Possible UNC root
|
|
|
|
rootEnd = offset = 1;
|
|
|
|
if (isPathSeparator(path.charCodeAt(1))) {
|
|
// Matched double path separator at beginning
|
|
let j = 2;
|
|
let last = j;
|
|
// Match 1 or more non-path separators
|
|
while (j < len && !isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more path separators
|
|
while (j < len && isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more non-path separators
|
|
while (j < len && !isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j === len) {
|
|
// We matched a UNC root only
|
|
return path;
|
|
}
|
|
if (j !== last) {
|
|
// We matched a UNC root with leftovers
|
|
|
|
// Offset by 1 to include the separator after the UNC root to
|
|
// treat it as a "normal root" on top of a (UNC) root
|
|
rootEnd = offset = j + 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Possible device root
|
|
} else if (isWindowsDeviceRoot(code) && path.charCodeAt(1) === CHAR_COLON) {
|
|
rootEnd = len > 2 && isPathSeparator(path.charCodeAt(2)) ? 3 : 2;
|
|
offset = rootEnd;
|
|
}
|
|
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
for (let i = len - 1; i >= offset; --i) {
|
|
if (isPathSeparator(path.charCodeAt(i))) {
|
|
if (!matchedSlash) {
|
|
end = i;
|
|
break;
|
|
}
|
|
} else {
|
|
// We saw the first non-path separator
|
|
matchedSlash = false;
|
|
}
|
|
}
|
|
|
|
if (end === -1) {
|
|
if (rootEnd === -1)
|
|
return '.';
|
|
|
|
end = rootEnd;
|
|
}
|
|
return path.slice(0, end);
|
|
},
|
|
|
|
basename(path, ext) {
|
|
if (ext !== undefined)
|
|
validateString(ext, 'ext');
|
|
validateString(path, 'path');
|
|
let start = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
|
|
// Check for a drive letter prefix so as not to mistake the following
|
|
// path separator as an extra separator at the end of the path that can be
|
|
// disregarded
|
|
if (path.length >= 2 &&
|
|
isWindowsDeviceRoot(path.charCodeAt(0)) &&
|
|
path.charCodeAt(1) === CHAR_COLON) {
|
|
start = 2;
|
|
}
|
|
|
|
if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {
|
|
if (ext === path)
|
|
return '';
|
|
let extIdx = ext.length - 1;
|
|
let firstNonSlashEnd = -1;
|
|
for (let i = path.length - 1; i >= start; --i) {
|
|
const code = path.charCodeAt(i);
|
|
if (isPathSeparator(code)) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
start = i + 1;
|
|
break;
|
|
}
|
|
} else {
|
|
if (firstNonSlashEnd === -1) {
|
|
// We saw the first non-path separator, remember this index in case
|
|
// we need it if the extension ends up not matching
|
|
matchedSlash = false;
|
|
firstNonSlashEnd = i + 1;
|
|
}
|
|
if (extIdx >= 0) {
|
|
// Try to match the explicit extension
|
|
if (code === ext.charCodeAt(extIdx)) {
|
|
if (--extIdx === -1) {
|
|
// We matched the extension, so mark this as the end of our path
|
|
// component
|
|
end = i;
|
|
}
|
|
} else {
|
|
// Extension does not match, so our result is the entire path
|
|
// component
|
|
extIdx = -1;
|
|
end = firstNonSlashEnd;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (start === end)
|
|
end = firstNonSlashEnd;
|
|
else if (end === -1)
|
|
end = path.length;
|
|
return path.slice(start, end);
|
|
}
|
|
for (let i = path.length - 1; i >= start; --i) {
|
|
if (isPathSeparator(path.charCodeAt(i))) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
start = i + 1;
|
|
break;
|
|
}
|
|
} else if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// path component
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
}
|
|
|
|
if (end === -1)
|
|
return '';
|
|
return path.slice(start, end);
|
|
},
|
|
|
|
extname(path) {
|
|
validateString(path, 'path');
|
|
let start = 0;
|
|
let startDot = -1;
|
|
let startPart = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
// Track the state of characters (if any) we see before our first dot and
|
|
// after any path separator we find
|
|
let preDotState = 0;
|
|
|
|
// Check for a drive letter prefix so as not to mistake the following
|
|
// path separator as an extra separator at the end of the path that can be
|
|
// disregarded
|
|
|
|
if (path.length >= 2 &&
|
|
path.charCodeAt(1) === CHAR_COLON &&
|
|
isWindowsDeviceRoot(path.charCodeAt(0))) {
|
|
start = startPart = 2;
|
|
}
|
|
|
|
for (let i = path.length - 1; i >= start; --i) {
|
|
const code = path.charCodeAt(i);
|
|
if (isPathSeparator(code)) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
startPart = i + 1;
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// extension
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
if (code === CHAR_DOT) {
|
|
// If this is our first dot, mark it as the start of our extension
|
|
if (startDot === -1)
|
|
startDot = i;
|
|
else if (preDotState !== 1)
|
|
preDotState = 1;
|
|
} else if (startDot !== -1) {
|
|
// We saw a non-dot and non-path separator before our dot, so we should
|
|
// have a good chance at having a non-empty extension
|
|
preDotState = -1;
|
|
}
|
|
}
|
|
|
|
if (startDot === -1 ||
|
|
end === -1 ||
|
|
// We saw a non-dot character immediately before the dot
|
|
preDotState === 0 ||
|
|
// The (right-most) trimmed path component is exactly '..'
|
|
(preDotState === 1 &&
|
|
startDot === end - 1 &&
|
|
startDot === startPart + 1)) {
|
|
return '';
|
|
}
|
|
return path.slice(startDot, end);
|
|
},
|
|
|
|
format: _format.bind(null, '\\'),
|
|
|
|
parse(path) {
|
|
validateString(path, 'path');
|
|
|
|
const ret = { root: '', dir: '', base: '', ext: '', name: '' };
|
|
if (path.length === 0)
|
|
return ret;
|
|
|
|
const len = path.length;
|
|
let rootEnd = 0;
|
|
let code = path.charCodeAt(0);
|
|
|
|
if (len === 1) {
|
|
if (isPathSeparator(code)) {
|
|
// `path` contains just a path separator, exit early to avoid
|
|
// unnecessary work
|
|
ret.root = ret.dir = path;
|
|
return ret;
|
|
}
|
|
ret.base = ret.name = path;
|
|
return ret;
|
|
}
|
|
// Try to match a root
|
|
if (isPathSeparator(code)) {
|
|
// Possible UNC root
|
|
|
|
rootEnd = 1;
|
|
if (isPathSeparator(path.charCodeAt(1))) {
|
|
// Matched double path separator at beginning
|
|
let j = 2;
|
|
let last = j;
|
|
// Match 1 or more non-path separators
|
|
while (j < len && !isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more path separators
|
|
while (j < len && isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j < len && j !== last) {
|
|
// Matched!
|
|
last = j;
|
|
// Match 1 or more non-path separators
|
|
while (j < len && !isPathSeparator(path.charCodeAt(j))) {
|
|
j++;
|
|
}
|
|
if (j === len) {
|
|
// We matched a UNC root only
|
|
rootEnd = j;
|
|
} else if (j !== last) {
|
|
// We matched a UNC root with leftovers
|
|
rootEnd = j + 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (isWindowsDeviceRoot(code) && path.charCodeAt(1) === CHAR_COLON) {
|
|
// Possible device root
|
|
if (len <= 2) {
|
|
// `path` contains just a drive root, exit early to avoid
|
|
// unnecessary work
|
|
ret.root = ret.dir = path;
|
|
return ret;
|
|
}
|
|
rootEnd = 2;
|
|
if (isPathSeparator(path.charCodeAt(2))) {
|
|
if (len === 3) {
|
|
// `path` contains just a drive root, exit early to avoid
|
|
// unnecessary work
|
|
ret.root = ret.dir = path;
|
|
return ret;
|
|
}
|
|
rootEnd = 3;
|
|
}
|
|
}
|
|
if (rootEnd > 0)
|
|
ret.root = path.slice(0, rootEnd);
|
|
|
|
let startDot = -1;
|
|
let startPart = rootEnd;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
let i = path.length - 1;
|
|
|
|
// Track the state of characters (if any) we see before our first dot and
|
|
// after any path separator we find
|
|
let preDotState = 0;
|
|
|
|
// Get non-dir info
|
|
for (; i >= rootEnd; --i) {
|
|
code = path.charCodeAt(i);
|
|
if (isPathSeparator(code)) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
startPart = i + 1;
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// extension
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
if (code === CHAR_DOT) {
|
|
// If this is our first dot, mark it as the start of our extension
|
|
if (startDot === -1)
|
|
startDot = i;
|
|
else if (preDotState !== 1)
|
|
preDotState = 1;
|
|
} else if (startDot !== -1) {
|
|
// We saw a non-dot and non-path separator before our dot, so we should
|
|
// have a good chance at having a non-empty extension
|
|
preDotState = -1;
|
|
}
|
|
}
|
|
|
|
if (end !== -1) {
|
|
if (startDot === -1 ||
|
|
// We saw a non-dot character immediately before the dot
|
|
preDotState === 0 ||
|
|
// The (right-most) trimmed path component is exactly '..'
|
|
(preDotState === 1 &&
|
|
startDot === end - 1 &&
|
|
startDot === startPart + 1)) {
|
|
ret.base = ret.name = path.slice(startPart, end);
|
|
} else {
|
|
ret.name = path.slice(startPart, startDot);
|
|
ret.base = path.slice(startPart, end);
|
|
ret.ext = path.slice(startDot, end);
|
|
}
|
|
}
|
|
|
|
// If the directory is the root, use the entire root as the `dir` including
|
|
// the trailing slash if any (`C:\abc` -> `C:\`). Otherwise, strip out the
|
|
// trailing slash (`C:\abc\def` -> `C:\abc`).
|
|
if (startPart > 0 && startPart !== rootEnd)
|
|
ret.dir = path.slice(0, startPart - 1);
|
|
else
|
|
ret.dir = ret.root;
|
|
|
|
return ret;
|
|
},
|
|
|
|
sep: '\\',
|
|
delimiter: ';',
|
|
win32: null,
|
|
posix: null
|
|
};
|
|
|
|
const posix = {
|
|
// path.resolve([from ...], to)
|
|
resolve(...args) {
|
|
let resolvedPath = '';
|
|
let resolvedAbsolute = false;
|
|
|
|
for (let i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
|
|
const path = i >= 0 ? args[i] : process.cwd();
|
|
|
|
validateString(path, 'path');
|
|
|
|
// Skip empty entries
|
|
if (path.length === 0) {
|
|
continue;
|
|
}
|
|
|
|
resolvedPath = `${path}/${resolvedPath}`;
|
|
resolvedAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
}
|
|
|
|
// 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 = normalizeString(resolvedPath, !resolvedAbsolute, '/',
|
|
isPosixPathSeparator);
|
|
|
|
if (resolvedAbsolute) {
|
|
return `/${resolvedPath}`;
|
|
}
|
|
return resolvedPath.length > 0 ? resolvedPath : '.';
|
|
},
|
|
|
|
normalize(path) {
|
|
validateString(path, 'path');
|
|
|
|
if (path.length === 0)
|
|
return '.';
|
|
|
|
const isAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
const trailingSeparator =
|
|
path.charCodeAt(path.length - 1) === CHAR_FORWARD_SLASH;
|
|
|
|
// Normalize the path
|
|
path = normalizeString(path, !isAbsolute, '/', isPosixPathSeparator);
|
|
|
|
if (path.length === 0) {
|
|
if (isAbsolute)
|
|
return '/';
|
|
return trailingSeparator ? './' : '.';
|
|
}
|
|
if (trailingSeparator)
|
|
path += '/';
|
|
|
|
return isAbsolute ? `/${path}` : path;
|
|
},
|
|
|
|
isAbsolute(path) {
|
|
validateString(path, 'path');
|
|
return path.length > 0 && path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
},
|
|
|
|
join(...args) {
|
|
if (args.length === 0)
|
|
return '.';
|
|
let joined;
|
|
for (let i = 0; i < args.length; ++i) {
|
|
const arg = args[i];
|
|
validateString(arg, 'path');
|
|
if (arg.length > 0) {
|
|
if (joined === undefined)
|
|
joined = arg;
|
|
else
|
|
joined += `/${arg}`;
|
|
}
|
|
}
|
|
if (joined === undefined)
|
|
return '.';
|
|
return posix.normalize(joined);
|
|
},
|
|
|
|
relative(from, to) {
|
|
validateString(from, 'from');
|
|
validateString(to, 'to');
|
|
|
|
if (from === to)
|
|
return '';
|
|
|
|
// Trim leading forward slashes.
|
|
from = posix.resolve(from);
|
|
to = posix.resolve(to);
|
|
|
|
if (from === to)
|
|
return '';
|
|
|
|
const fromStart = 1;
|
|
const fromEnd = from.length;
|
|
const fromLen = fromEnd - fromStart;
|
|
const toStart = 1;
|
|
const toLen = to.length - toStart;
|
|
|
|
// Compare paths to find the longest common path from root
|
|
const length = (fromLen < toLen ? fromLen : toLen);
|
|
let lastCommonSep = -1;
|
|
let i = 0;
|
|
for (; i < length; i++) {
|
|
const fromCode = from.charCodeAt(fromStart + i);
|
|
if (fromCode !== to.charCodeAt(toStart + i))
|
|
break;
|
|
else if (fromCode === CHAR_FORWARD_SLASH)
|
|
lastCommonSep = i;
|
|
}
|
|
if (i === length) {
|
|
if (toLen > length) {
|
|
if (to.charCodeAt(toStart + i) === CHAR_FORWARD_SLASH) {
|
|
// We get here if `from` is the exact base path for `to`.
|
|
// For example: from='/foo/bar'; to='/foo/bar/baz'
|
|
return to.slice(toStart + i + 1);
|
|
}
|
|
if (i === 0) {
|
|
// We get here if `from` is the root
|
|
// For example: from='/'; to='/foo'
|
|
return to.slice(toStart + i);
|
|
}
|
|
} else if (fromLen > length) {
|
|
if (from.charCodeAt(fromStart + i) === CHAR_FORWARD_SLASH) {
|
|
// We get here if `to` is the exact base path for `from`.
|
|
// For example: from='/foo/bar/baz'; to='/foo/bar'
|
|
lastCommonSep = i;
|
|
} else if (i === 0) {
|
|
// We get here if `to` is the root.
|
|
// For example: from='/foo/bar'; to='/'
|
|
lastCommonSep = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
let out = '';
|
|
// Generate the relative path based on the path difference between `to`
|
|
// and `from`.
|
|
for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
|
|
if (i === fromEnd || from.charCodeAt(i) === CHAR_FORWARD_SLASH) {
|
|
out += out.length === 0 ? '..' : '/..';
|
|
}
|
|
}
|
|
|
|
// Lastly, append the rest of the destination (`to`) path that comes after
|
|
// the common path parts.
|
|
return `${out}${to.slice(toStart + lastCommonSep)}`;
|
|
},
|
|
|
|
toNamespacedPath(path) {
|
|
// Non-op on posix systems
|
|
return path;
|
|
},
|
|
|
|
dirname(path) {
|
|
validateString(path, 'path');
|
|
if (path.length === 0)
|
|
return '.';
|
|
const hasRoot = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
for (let i = path.length - 1; i >= 1; --i) {
|
|
if (path.charCodeAt(i) === CHAR_FORWARD_SLASH) {
|
|
if (!matchedSlash) {
|
|
end = i;
|
|
break;
|
|
}
|
|
} else {
|
|
// We saw the first non-path separator
|
|
matchedSlash = false;
|
|
}
|
|
}
|
|
|
|
if (end === -1)
|
|
return hasRoot ? '/' : '.';
|
|
if (hasRoot && end === 1)
|
|
return '//';
|
|
return path.slice(0, end);
|
|
},
|
|
|
|
basename(path, ext) {
|
|
if (ext !== undefined)
|
|
validateString(ext, 'ext');
|
|
validateString(path, 'path');
|
|
|
|
let start = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
|
|
if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {
|
|
if (ext === path)
|
|
return '';
|
|
let extIdx = ext.length - 1;
|
|
let firstNonSlashEnd = -1;
|
|
for (let i = path.length - 1; i >= 0; --i) {
|
|
const code = path.charCodeAt(i);
|
|
if (code === CHAR_FORWARD_SLASH) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
start = i + 1;
|
|
break;
|
|
}
|
|
} else {
|
|
if (firstNonSlashEnd === -1) {
|
|
// We saw the first non-path separator, remember this index in case
|
|
// we need it if the extension ends up not matching
|
|
matchedSlash = false;
|
|
firstNonSlashEnd = i + 1;
|
|
}
|
|
if (extIdx >= 0) {
|
|
// Try to match the explicit extension
|
|
if (code === ext.charCodeAt(extIdx)) {
|
|
if (--extIdx === -1) {
|
|
// We matched the extension, so mark this as the end of our path
|
|
// component
|
|
end = i;
|
|
}
|
|
} else {
|
|
// Extension does not match, so our result is the entire path
|
|
// component
|
|
extIdx = -1;
|
|
end = firstNonSlashEnd;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (start === end)
|
|
end = firstNonSlashEnd;
|
|
else if (end === -1)
|
|
end = path.length;
|
|
return path.slice(start, end);
|
|
}
|
|
for (let i = path.length - 1; i >= 0; --i) {
|
|
if (path.charCodeAt(i) === CHAR_FORWARD_SLASH) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
start = i + 1;
|
|
break;
|
|
}
|
|
} else if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// path component
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
}
|
|
|
|
if (end === -1)
|
|
return '';
|
|
return path.slice(start, end);
|
|
},
|
|
|
|
extname(path) {
|
|
validateString(path, 'path');
|
|
let startDot = -1;
|
|
let startPart = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
// Track the state of characters (if any) we see before our first dot and
|
|
// after any path separator we find
|
|
let preDotState = 0;
|
|
for (let i = path.length - 1; i >= 0; --i) {
|
|
const code = path.charCodeAt(i);
|
|
if (code === CHAR_FORWARD_SLASH) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
startPart = i + 1;
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// extension
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
if (code === CHAR_DOT) {
|
|
// If this is our first dot, mark it as the start of our extension
|
|
if (startDot === -1)
|
|
startDot = i;
|
|
else if (preDotState !== 1)
|
|
preDotState = 1;
|
|
} else if (startDot !== -1) {
|
|
// We saw a non-dot and non-path separator before our dot, so we should
|
|
// have a good chance at having a non-empty extension
|
|
preDotState = -1;
|
|
}
|
|
}
|
|
|
|
if (startDot === -1 ||
|
|
end === -1 ||
|
|
// We saw a non-dot character immediately before the dot
|
|
preDotState === 0 ||
|
|
// The (right-most) trimmed path component is exactly '..'
|
|
(preDotState === 1 &&
|
|
startDot === end - 1 &&
|
|
startDot === startPart + 1)) {
|
|
return '';
|
|
}
|
|
return path.slice(startDot, end);
|
|
},
|
|
|
|
format: _format.bind(null, '/'),
|
|
|
|
parse(path) {
|
|
validateString(path, 'path');
|
|
|
|
const ret = { root: '', dir: '', base: '', ext: '', name: '' };
|
|
if (path.length === 0)
|
|
return ret;
|
|
const isAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
let start;
|
|
if (isAbsolute) {
|
|
ret.root = '/';
|
|
start = 1;
|
|
} else {
|
|
start = 0;
|
|
}
|
|
let startDot = -1;
|
|
let startPart = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
let i = path.length - 1;
|
|
|
|
// Track the state of characters (if any) we see before our first dot and
|
|
// after any path separator we find
|
|
let preDotState = 0;
|
|
|
|
// Get non-dir info
|
|
for (; i >= start; --i) {
|
|
const code = path.charCodeAt(i);
|
|
if (code === CHAR_FORWARD_SLASH) {
|
|
// If we reached a path separator that was not part of a set of path
|
|
// separators at the end of the string, stop now
|
|
if (!matchedSlash) {
|
|
startPart = i + 1;
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (end === -1) {
|
|
// We saw the first non-path separator, mark this as the end of our
|
|
// extension
|
|
matchedSlash = false;
|
|
end = i + 1;
|
|
}
|
|
if (code === CHAR_DOT) {
|
|
// If this is our first dot, mark it as the start of our extension
|
|
if (startDot === -1)
|
|
startDot = i;
|
|
else if (preDotState !== 1)
|
|
preDotState = 1;
|
|
} else if (startDot !== -1) {
|
|
// We saw a non-dot and non-path separator before our dot, so we should
|
|
// have a good chance at having a non-empty extension
|
|
preDotState = -1;
|
|
}
|
|
}
|
|
|
|
if (end !== -1) {
|
|
const start = startPart === 0 && isAbsolute ? 1 : startPart;
|
|
if (startDot === -1 ||
|
|
// We saw a non-dot character immediately before the dot
|
|
preDotState === 0 ||
|
|
// The (right-most) trimmed path component is exactly '..'
|
|
(preDotState === 1 &&
|
|
startDot === end - 1 &&
|
|
startDot === startPart + 1)) {
|
|
ret.base = ret.name = path.slice(start, end);
|
|
} else {
|
|
ret.name = path.slice(start, startDot);
|
|
ret.base = path.slice(start, end);
|
|
ret.ext = path.slice(startDot, end);
|
|
}
|
|
}
|
|
|
|
if (startPart > 0)
|
|
ret.dir = path.slice(0, startPart - 1);
|
|
else if (isAbsolute)
|
|
ret.dir = '/';
|
|
|
|
return ret;
|
|
},
|
|
|
|
sep: '/',
|
|
delimiter: ':',
|
|
win32: null,
|
|
posix: null
|
|
};
|
|
|
|
posix.win32 = win32.win32 = win32;
|
|
posix.posix = win32.posix = posix;
|
|
|
|
// Legacy internal API, docs-only deprecated: DEP0080
|
|
win32._makeLong = win32.toNamespacedPath;
|
|
posix._makeLong = posix.toNamespacedPath;
|
|
|
|
module.exports = process.platform === 'win32' ? win32 : posix;
|