// Copyright the Browserify authors. MIT License. | |
// Ported from https://github.com/browserify/path-browserify/ | |
// This module is browser compatible. | |
import { CHAR_BACKWARD_SLASH, CHAR_COLON, CHAR_DOT, CHAR_QUESTION_MARK } from "./_constants.ts"; | |
import { _format, assertPath, encodeWhitespace, isPathSeparator, isWindowsDeviceRoot, normalizeString } from "./_util.ts"; | |
import { assert } from "../_util/assert.ts"; | |
export const sep = "\\"; | |
export const delimiter = ";"; | |
/** | |
* Resolves path segments into a `path` | |
* @param pathSegments to process to path | |
*/ export function resolve(...pathSegments) { | |
let resolvedDevice = ""; | |
let resolvedTail = ""; | |
let resolvedAbsolute = false; | |
for(let i = pathSegments.length - 1; i >= -1; i--){ | |
let path; | |
if (i >= 0) { | |
path = pathSegments[i]; | |
} else if (!resolvedDevice) { | |
if (globalThis.Deno == null) { | |
throw new TypeError("Resolved a drive-letter-less path without a CWD."); | |
} | |
path = Deno.cwd(); | |
} else { | |
if (globalThis.Deno == null) { | |
throw new TypeError("Resolved a relative path without a CWD."); | |
} | |
// Windows has the concept of drive-specific current working | |
// directories. If we've resolved a drive letter but not yet an | |
// absolute path, get cwd for that drive, or the process cwd if | |
// the drive cwd is not available. We're sure the device is not | |
// a UNC path at this points, because UNC paths are always absolute. | |
path = Deno.env.get(`=${resolvedDevice}`) || Deno.cwd(); | |
// Verify that a cwd was found and that it actually points | |
// to our drive. If not, default to the drive's root. | |
if (path === undefined || path.slice(0, 3).toLowerCase() !== `${resolvedDevice.toLowerCase()}\\`) { | |
path = `${resolvedDevice}\\`; | |
} | |
} | |
assertPath(path); | |
const len = path.length; | |
// Skip empty entries | |
if (len === 0) continue; | |
let rootEnd = 0; | |
let device = ""; | |
let isAbsolute = false; | |
const code = path.charCodeAt(0); | |
// Try to match a root | |
if (len > 1) { | |
if (isPathSeparator(code)) { | |
// Possible UNC root | |
// If we started with a separator, we know we at least have an | |
// absolute path of some kind (UNC or otherwise) | |
isAbsolute = true; | |
if (isPathSeparator(path.charCodeAt(1))) { | |
// Matched double path separator at beginning | |
let j = 2; | |
let last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
const firstPart = path.slice(last, j); | |
// Matched! | |
last = j; | |
// Match 1 or more path separators | |
for(; j < len; ++j){ | |
if (!isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j === len) { | |
// We matched a UNC root only | |
device = `\\\\${firstPart}\\${path.slice(last)}`; | |
rootEnd = j; | |
} else if (j !== last) { | |
// We matched a UNC root with leftovers | |
device = `\\\\${firstPart}\\${path.slice(last, j)}`; | |
rootEnd = j; | |
} | |
} | |
} | |
} else { | |
rootEnd = 1; | |
} | |
} else if (isWindowsDeviceRoot(code)) { | |
// Possible device root | |
if (path.charCodeAt(1) === CHAR_COLON) { | |
device = path.slice(0, 2); | |
rootEnd = 2; | |
if (len > 2) { | |
if (isPathSeparator(path.charCodeAt(2))) { | |
// Treat separator following drive name as an absolute path | |
// indicator | |
isAbsolute = true; | |
rootEnd = 3; | |
} | |
} | |
} | |
} | |
} else if (isPathSeparator(code)) { | |
// `path` contains just a path separator | |
rootEnd = 1; | |
isAbsolute = true; | |
} | |
if (device.length > 0 && resolvedDevice.length > 0 && device.toLowerCase() !== resolvedDevice.toLowerCase()) { | |
continue; | |
} | |
if (resolvedDevice.length === 0 && device.length > 0) { | |
resolvedDevice = device; | |
} | |
if (!resolvedAbsolute) { | |
resolvedTail = `${path.slice(rootEnd)}\\${resolvedTail}`; | |
resolvedAbsolute = isAbsolute; | |
} | |
if (resolvedAbsolute && resolvedDevice.length > 0) break; | |
} | |
// At this point the path should be resolved to a full absolute path, | |
// but handle relative paths to be safe (might happen when process.cwd() | |
// fails) | |
// Normalize the tail path | |
resolvedTail = normalizeString(resolvedTail, !resolvedAbsolute, "\\", isPathSeparator); | |
return resolvedDevice + (resolvedAbsolute ? "\\" : "") + resolvedTail || "."; | |
} | |
/** | |
* Normalizes a `path` | |
* @param path to normalize | |
*/ export function normalize(path) { | |
assertPath(path); | |
const len = path.length; | |
if (len === 0) return "."; | |
let rootEnd = 0; | |
let device; | |
let isAbsolute = false; | |
const code = path.charCodeAt(0); | |
// Try to match a root | |
if (len > 1) { | |
if (isPathSeparator(code)) { | |
// Possible UNC root | |
// If we started with a separator, we know we at least have an absolute | |
// path of some kind (UNC or otherwise) | |
isAbsolute = true; | |
if (isPathSeparator(path.charCodeAt(1))) { | |
// Matched double path separator at beginning | |
let j = 2; | |
let last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
const firstPart = path.slice(last, j); | |
// Matched! | |
last = j; | |
// Match 1 or more path separators | |
for(; j < len; ++j){ | |
if (!isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j === len) { | |
// We matched a UNC root only | |
// Return the normalized version of the UNC root since there | |
// is nothing left to process | |
return `\\\\${firstPart}\\${path.slice(last)}\\`; | |
} else if (j !== last) { | |
// We matched a UNC root with leftovers | |
device = `\\\\${firstPart}\\${path.slice(last, j)}`; | |
rootEnd = j; | |
} | |
} | |
} | |
} else { | |
rootEnd = 1; | |
} | |
} else if (isWindowsDeviceRoot(code)) { | |
// Possible device root | |
if (path.charCodeAt(1) === CHAR_COLON) { | |
device = path.slice(0, 2); | |
rootEnd = 2; | |
if (len > 2) { | |
if (isPathSeparator(path.charCodeAt(2))) { | |
// Treat separator following drive name as an absolute path | |
// indicator | |
isAbsolute = true; | |
rootEnd = 3; | |
} | |
} | |
} | |
} | |
} else if (isPathSeparator(code)) { | |
// `path` contains just a path separator, exit early to avoid unnecessary | |
// work | |
return "\\"; | |
} | |
let tail; | |
if (rootEnd < len) { | |
tail = normalizeString(path.slice(rootEnd), !isAbsolute, "\\", isPathSeparator); | |
} else { | |
tail = ""; | |
} | |
if (tail.length === 0 && !isAbsolute) tail = "."; | |
if (tail.length > 0 && isPathSeparator(path.charCodeAt(len - 1))) { | |
tail += "\\"; | |
} | |
if (device === undefined) { | |
if (isAbsolute) { | |
if (tail.length > 0) return `\\${tail}`; | |
else return "\\"; | |
} else if (tail.length > 0) { | |
return tail; | |
} else { | |
return ""; | |
} | |
} else if (isAbsolute) { | |
if (tail.length > 0) return `${device}\\${tail}`; | |
else return `${device}\\`; | |
} else if (tail.length > 0) { | |
return device + tail; | |
} else { | |
return device; | |
} | |
} | |
/** | |
* Verifies whether path is absolute | |
* @param path to verify | |
*/ export function isAbsolute(path) { | |
assertPath(path); | |
const len = path.length; | |
if (len === 0) return false; | |
const code = path.charCodeAt(0); | |
if (isPathSeparator(code)) { | |
return true; | |
} else if (isWindowsDeviceRoot(code)) { | |
// Possible device root | |
if (len > 2 && path.charCodeAt(1) === CHAR_COLON) { | |
if (isPathSeparator(path.charCodeAt(2))) return true; | |
} | |
} | |
return false; | |
} | |
/** | |
* Join all given a sequence of `paths`,then normalizes the resulting path. | |
* @param paths to be joined and normalized | |
*/ export function join(...paths) { | |
const pathsCount = paths.length; | |
if (pathsCount === 0) return "."; | |
let joined; | |
let firstPart = null; | |
for(let i = 0; i < pathsCount; ++i){ | |
const path = paths[i]; | |
assertPath(path); | |
if (path.length > 0) { | |
if (joined === undefined) joined = firstPart = path; | |
else joined += `\\${path}`; | |
} | |
} | |
if (joined === undefined) return "."; | |
// Make sure that the joined path doesn't start with two slashes, because | |
// normalize() will mistake it for an UNC path then. | |
// | |
// This step is skipped when it is very clear that the user actually | |
// intended to point at an UNC path. This is assumed when the first | |
// non-empty string arguments starts with exactly two slashes followed by | |
// at least one more non-slash character. | |
// | |
// Note that for normalize() to treat a path as an UNC path it needs to | |
// have at least 2 components, so we don't filter for that here. | |
// This means that the user can use join to construct UNC paths from | |
// a server name and a share name; for example: | |
// path.join('//server', 'share') -> '\\\\server\\share\\') | |
let needsReplace = true; | |
let slashCount = 0; | |
assert(firstPart != null); | |
if (isPathSeparator(firstPart.charCodeAt(0))) { | |
++slashCount; | |
const firstLen = firstPart.length; | |
if (firstLen > 1) { | |
if (isPathSeparator(firstPart.charCodeAt(1))) { | |
++slashCount; | |
if (firstLen > 2) { | |
if (isPathSeparator(firstPart.charCodeAt(2))) ++slashCount; | |
else { | |
// We matched a UNC path in the first part | |
needsReplace = false; | |
} | |
} | |
} | |
} | |
} | |
if (needsReplace) { | |
// Find any more consecutive slashes we need to replace | |
for(; slashCount < joined.length; ++slashCount){ | |
if (!isPathSeparator(joined.charCodeAt(slashCount))) break; | |
} | |
// Replace the slashes if needed | |
if (slashCount >= 2) joined = `\\${joined.slice(slashCount)}`; | |
} | |
return normalize(joined); | |
} | |
/** | |
* It will solve the relative path from `from` to `to`, for instance: | |
* from = 'C:\\orandea\\test\\aaa' | |
* to = 'C:\\orandea\\impl\\bbb' | |
* The output of the function should be: '..\\..\\impl\\bbb' | |
* @param from relative path | |
* @param to relative path | |
*/ export function relative(from, to) { | |
assertPath(from); | |
assertPath(to); | |
if (from === to) return ""; | |
const fromOrig = resolve(from); | |
const toOrig = resolve(to); | |
if (fromOrig === toOrig) return ""; | |
from = fromOrig.toLowerCase(); | |
to = toOrig.toLowerCase(); | |
if (from === to) return ""; | |
// Trim any leading backslashes | |
let fromStart = 0; | |
let fromEnd = from.length; | |
for(; fromStart < fromEnd; ++fromStart){ | |
if (from.charCodeAt(fromStart) !== CHAR_BACKWARD_SLASH) break; | |
} | |
// Trim trailing backslashes (applicable to UNC paths only) | |
for(; fromEnd - 1 > fromStart; --fromEnd){ | |
if (from.charCodeAt(fromEnd - 1) !== CHAR_BACKWARD_SLASH) break; | |
} | |
const fromLen = fromEnd - fromStart; | |
// Trim any leading backslashes | |
let toStart = 0; | |
let toEnd = to.length; | |
for(; toStart < toEnd; ++toStart){ | |
if (to.charCodeAt(toStart) !== CHAR_BACKWARD_SLASH) break; | |
} | |
// Trim trailing backslashes (applicable to UNC paths only) | |
for(; toEnd - 1 > toStart; --toEnd){ | |
if (to.charCodeAt(toEnd - 1) !== CHAR_BACKWARD_SLASH) break; | |
} | |
const toLen = toEnd - 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){ | |
if (i === length) { | |
if (toLen > length) { | |
if (to.charCodeAt(toStart + i) === CHAR_BACKWARD_SLASH) { | |
// We get here if `from` is the exact base path for `to`. | |
// For example: from='C:\\foo\\bar'; to='C:\\foo\\bar\\baz' | |
return toOrig.slice(toStart + i + 1); | |
} else if (i === 2) { | |
// We get here if `from` is the device root. | |
// For example: from='C:\\'; to='C:\\foo' | |
return toOrig.slice(toStart + i); | |
} | |
} | |
if (fromLen > length) { | |
if (from.charCodeAt(fromStart + i) === CHAR_BACKWARD_SLASH) { | |
// We get here if `to` is the exact base path for `from`. | |
// For example: from='C:\\foo\\bar'; to='C:\\foo' | |
lastCommonSep = i; | |
} else if (i === 2) { | |
// We get here if `to` is the device root. | |
// For example: from='C:\\foo\\bar'; to='C:\\' | |
lastCommonSep = 3; | |
} | |
} | |
break; | |
} | |
const fromCode = from.charCodeAt(fromStart + i); | |
const toCode = to.charCodeAt(toStart + i); | |
if (fromCode !== toCode) break; | |
else if (fromCode === CHAR_BACKWARD_SLASH) lastCommonSep = i; | |
} | |
// We found a mismatch before the first common path separator was seen, so | |
// return the original `to`. | |
if (i !== length && lastCommonSep === -1) { | |
return toOrig; | |
} | |
let out = ""; | |
if (lastCommonSep === -1) lastCommonSep = 0; | |
// 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) { | |
if (out.length === 0) out += ".."; | |
else out += "\\.."; | |
} | |
} | |
// 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 + lastCommonSep, toEnd); | |
} else { | |
toStart += lastCommonSep; | |
if (toOrig.charCodeAt(toStart) === CHAR_BACKWARD_SLASH) ++toStart; | |
return toOrig.slice(toStart, toEnd); | |
} | |
} | |
/** | |
* Resolves path to a namespace path | |
* @param path to resolve to namespace | |
*/ export function toNamespacedPath(path) { | |
// Note: this will *probably* throw somewhere. | |
if (typeof path !== "string") return path; | |
if (path.length === 0) return ""; | |
const resolvedPath = resolve(path); | |
if (resolvedPath.length >= 3) { | |
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))) { | |
// Possible device root | |
if (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; | |
} | |
/** | |
* Return the directory name of a `path`. | |
* @param path to determine name for | |
*/ export function dirname(path) { | |
assertPath(path); | |
const len = path.length; | |
if (len === 0) return "."; | |
let rootEnd = -1; | |
let end = -1; | |
let matchedSlash = true; | |
let offset = 0; | |
const code = path.charCodeAt(0); | |
// Try to match a root | |
if (len > 1) { | |
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 | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more path separators | |
for(; j < len; ++j){ | |
if (!isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
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; | |
} | |
} | |
} | |
} | |
} else if (isWindowsDeviceRoot(code)) { | |
// Possible device root | |
if (path.charCodeAt(1) === CHAR_COLON) { | |
rootEnd = offset = 2; | |
if (len > 2) { | |
if (isPathSeparator(path.charCodeAt(2))) rootEnd = offset = 3; | |
} | |
} | |
} | |
} else if (isPathSeparator(code)) { | |
// `path` contains just a path separator, exit early to avoid | |
// unnecessary work | |
return path; | |
} | |
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 "."; | |
else end = rootEnd; | |
} | |
return path.slice(0, end); | |
} | |
/** | |
* Return the last portion of a `path`. Trailing directory separators are ignored. | |
* @param path to process | |
* @param ext of path directory | |
*/ export function basename(path, ext = "") { | |
if (ext !== undefined && typeof ext !== "string") { | |
throw new TypeError('"ext" argument must be a string'); | |
} | |
assertPath(path); | |
let start = 0; | |
let end = -1; | |
let matchedSlash = true; | |
let i; | |
// 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) { | |
const drive = path.charCodeAt(0); | |
if (isWindowsDeviceRoot(drive)) { | |
if (path.charCodeAt(1) === CHAR_COLON) start = 2; | |
} | |
} | |
if (ext !== undefined && ext.length > 0 && ext.length <= path.length) { | |
if (ext.length === path.length && ext === path) return ""; | |
let extIdx = ext.length - 1; | |
let firstNonSlashEnd = -1; | |
for(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); | |
} else { | |
for(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); | |
} | |
} | |
/** | |
* Return the extension of the `path`. | |
* @param path with extension | |
*/ export function extname(path) { | |
assertPath(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); | |
} | |
/** | |
* Generate a path from `FormatInputPathObject` object. | |
* @param pathObject with path | |
*/ export function format(pathObject) { | |
if (pathObject === null || typeof pathObject !== "object") { | |
throw new TypeError(`The "pathObject" argument must be of type Object. Received type ${typeof pathObject}`); | |
} | |
return _format("\\", pathObject); | |
} | |
/** | |
* Return a `ParsedPath` object of the `path`. | |
* @param path to process | |
*/ export function parse(path) { | |
assertPath(path); | |
const ret = { | |
root: "", | |
dir: "", | |
base: "", | |
ext: "", | |
name: "" | |
}; | |
const len = path.length; | |
if (len === 0) return ret; | |
let rootEnd = 0; | |
let code = path.charCodeAt(0); | |
// Try to match a root | |
if (len > 1) { | |
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 | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more path separators | |
for(; j < len; ++j){ | |
if (!isPathSeparator(path.charCodeAt(j))) break; | |
} | |
if (j < len && j !== last) { | |
// Matched! | |
last = j; | |
// Match 1 or more non-path separators | |
for(; j < len; ++j){ | |
if (isPathSeparator(path.charCodeAt(j))) break; | |
} | |
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)) { | |
// Possible device root | |
if (path.charCodeAt(1) === CHAR_COLON) { | |
rootEnd = 2; | |
if (len > 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; | |
} | |
} else { | |
// `path` contains just a drive root, exit early to avoid | |
// unnecessary work | |
ret.root = ret.dir = path; | |
return ret; | |
} | |
} | |
} | |
} else if (isPathSeparator(code)) { | |
// `path` contains just a path separator, exit early to avoid | |
// unnecessary work | |
ret.root = ret.dir = path; | |
return ret; | |
} | |
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 (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) { | |
if (end !== -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; | |
} | |
/** | |
* Converts a file URL to a path string. | |
* | |
* fromFileUrl("file:///home/foo"); // "\\home\\foo" | |
* fromFileUrl("file:///C:/Users/foo"); // "C:\\Users\\foo" | |
* fromFileUrl("file://localhost/home/foo"); // "\\\\localhost\\home\\foo" | |
* @param url of a file URL | |
*/ export function fromFileUrl(url) { | |
url = url instanceof URL ? url : new URL(url); | |
if (url.protocol != "file:") { | |
throw new TypeError("Must be a file URL."); | |
} | |
let path = decodeURIComponent(url.pathname.replace(/\//g, "\\").replace(/%(?![0-9A-Fa-f]{2})/g, "%25")).replace(/^\\*([A-Za-z]:)(\\|$)/, "$1\\"); | |
if (url.hostname != "") { | |
// Note: The `URL` implementation guarantees that the drive letter and | |
// hostname are mutually exclusive. Otherwise it would not have been valid | |
// to append the hostname and path like this. | |
path = `\\\\${url.hostname}${path}`; | |
} | |
return path; | |
} | |
/** | |
* Converts a path string to a file URL. | |
* | |
* toFileUrl("\\home\\foo"); // new URL("file:///home/foo") | |
* toFileUrl("C:\\Users\\foo"); // new URL("file:///C:/Users/foo") | |
* toFileUrl("\\\\127.0.0.1\\home\\foo"); // new URL("file://127.0.0.1/home/foo") | |
* @param path to convert to file URL | |
*/ export function toFileUrl(path) { | |
if (!isAbsolute(path)) { | |
throw new TypeError("Must be an absolute path."); | |
} | |
const [, hostname, pathname] = path.match(/^(?:[/\\]{2}([^/\\]+)(?=[/\\](?:[^/\\]|$)))?(.*)/); | |
const url = new URL("file:///"); | |
url.pathname = encodeWhitespace(pathname.replace(/%/g, "%25")); | |
if (hostname != null && hostname != "localhost") { | |
url.hostname = hostname; | |
if (!url.hostname) { | |
throw new TypeError("Invalid hostname."); | |
} | |
} | |
return url; | |
} | |
//# sourceMappingURL=data:application/json;base64,{"version":3,"sources":["https://deno.land/std@0.92.0/path/win32.ts"],"sourcesContent":["// Copyright the Browserify authors. MIT License.\n// Ported from https://github.com/browserify/path-browserify/\n// This module is browser compatible.\n\nimport type { FormatInputPathObject, ParsedPath } from \"./_interface.ts\";\nimport {\n  CHAR_BACKWARD_SLASH,\n  CHAR_COLON,\n  CHAR_DOT,\n  CHAR_QUESTION_MARK,\n} from \"./_constants.ts\";\n\nimport {\n  _format,\n  assertPath,\n  encodeWhitespace,\n  isPathSeparator,\n  isWindowsDeviceRoot,\n  normalizeString,\n} from \"./_util.ts\";\nimport { assert } from \"../_util/assert.ts\";\n\nexport const sep = \"\\\\\";\nexport const delimiter = \";\";\n\n/**\n * Resolves path segments into a `path`\n * @param pathSegments to process to path\n */\nexport function resolve(...pathSegments: string[]): string {\n  let resolvedDevice = \"\";\n  let resolvedTail = \"\";\n  let resolvedAbsolute = false;\n\n  for (let i = pathSegments.length - 1; i >= -1; i--) {\n    let path: string;\n    if (i >= 0) {\n      path = pathSegments[i];\n    } else if (!resolvedDevice) {\n      if (globalThis.Deno == null) {\n        throw new TypeError(\"Resolved a drive-letter-less path without a CWD.\");\n      }\n      path = Deno.cwd();\n    } else {\n      if (globalThis.Deno == null) {\n        throw new TypeError(\"Resolved a relative path without a CWD.\");\n      }\n      // Windows has the concept of drive-specific current working\n      // directories. If we've resolved a drive letter but not yet an\n      // absolute path, get cwd for that drive, or the process cwd if\n      // the drive cwd is not available. We're sure the device is not\n      // a UNC path at this points, because UNC paths are always absolute.\n      path = Deno.env.get(`=${resolvedDevice}`) || Deno.cwd();\n\n      // Verify that a cwd was found and that it actually points\n      // to our drive. If not, default to the drive's root.\n      if (\n        path === undefined ||\n        path.slice(0, 3).toLowerCase() !== `${resolvedDevice.toLowerCase()}\\\\`\n      ) {\n        path = `${resolvedDevice}\\\\`;\n      }\n    }\n\n    assertPath(path);\n\n    const len = path.length;\n\n    // Skip empty entries\n    if (len === 0) continue;\n\n    let rootEnd = 0;\n    let device = \"\";\n    let isAbsolute = false;\n    const code = path.charCodeAt(0);\n\n    // Try to match a root\n    if (len > 1) {\n      if (isPathSeparator(code)) {\n        // Possible UNC root\n\n        // If we started with a separator, we know we at least have an\n        // absolute path of some kind (UNC or otherwise)\n        isAbsolute = true;\n\n        if (isPathSeparator(path.charCodeAt(1))) {\n          // Matched double path separator at beginning\n          let j = 2;\n          let last = j;\n          // Match 1 or more non-path separators\n          for (; j < len; ++j) {\n            if (isPathSeparator(path.charCodeAt(j))) break;\n          }\n          if (j < len && j !== last) {\n            const firstPart = path.slice(last, j);\n            // Matched!\n            last = j;\n            // Match 1 or more path separators\n            for (; j < len; ++j) {\n              if (!isPathSeparator(path.charCodeAt(j))) break;\n            }\n            if (j < len && j !== last) {\n              // Matched!\n              last = j;\n              // Match 1 or more non-path separators\n              for (; j < len; ++j) {\n                if (isPathSeparator(path.charCodeAt(j))) break;\n              }\n              if (j === len) {\n                // We matched a UNC root only\n                device = `\\\\\\\\${firstPart}\\\\${path.slice(last)}`;\n                rootEnd = j;\n              } else if (j !== last) {\n                // We matched a UNC root with leftovers\n\n                device = `\\\\\\\\${firstPart}\\\\${path.slice(last, j)}`;\n                rootEnd = j;\n              }\n            }\n          }\n        } else {\n          rootEnd = 1;\n        }\n      } else if (isWindowsDeviceRoot(code)) {\n        // Possible device root\n\n        if (path.charCodeAt(1) === CHAR_COLON) {\n          device = path.slice(0, 2);\n          rootEnd = 2;\n          if (len > 2) {\n            if (isPathSeparator(path.charCodeAt(2))) {\n              // Treat separator following drive name as an absolute path\n              // indicator\n              isAbsolute = true;\n              rootEnd = 3;\n            }\n          }\n        }\n      }\n    } else if (isPathSeparator(code)) {\n      // `path` contains just a path separator\n      rootEnd = 1;\n      isAbsolute = true;\n    }\n\n    if (\n      device.length > 0 &&\n      resolvedDevice.length > 0 &&\n      device.toLowerCase() !== resolvedDevice.toLowerCase()\n    ) {\n      // This path points to another device so it is not applicable\n      continue;\n    }\n\n    if (resolvedDevice.length === 0 && device.length > 0) {\n      resolvedDevice = device;\n    }\n    if (!resolvedAbsolute) {\n      resolvedTail = `${path.slice(rootEnd)}\\\\${resolvedTail}`;\n      resolvedAbsolute = isAbsolute;\n    }\n\n    if (resolvedAbsolute && resolvedDevice.length > 0) break;\n  }\n\n  // At this point the path should be resolved to a full absolute path,\n  // but handle relative paths to be safe (might happen when process.cwd()\n  // fails)\n\n  // Normalize the tail path\n  resolvedTail = normalizeString(\n    resolvedTail,\n    !resolvedAbsolute,\n    \"\\\\\",\n    isPathSeparator,\n  );\n\n  return resolvedDevice + (resolvedAbsolute ? \"\\\\\" : \"\") + resolvedTail || \".\";\n}\n\n/**\n * Normalizes a `path`\n * @param path to normalize\n */\nexport function normalize(path: string): string {\n  assertPath(path);\n  const len = path.length;\n  if (len === 0) return \".\";\n  let rootEnd = 0;\n  let device: string | undefined;\n  let isAbsolute = false;\n  const code = path.charCodeAt(0);\n\n  // Try to match a root\n  if (len > 1) {\n    if (isPathSeparator(code)) {\n      // Possible UNC root\n\n      // If we started with a separator, we know we at least have an absolute\n      // path of some kind (UNC or otherwise)\n      isAbsolute = true;\n\n      if (isPathSeparator(path.charCodeAt(1))) {\n        // Matched double path separator at beginning\n        let j = 2;\n        let last = j;\n        // Match 1 or more non-path separators\n        for (; j < len; ++j) {\n          if (isPathSeparator(path.charCodeAt(j))) break;\n        }\n        if (j < len && j !== last) {\n          const firstPart = path.slice(last, j);\n          // Matched!\n          last = j;\n          // Match 1 or more path separators\n          for (; j < len; ++j) {\n            if (!isPathSeparator(path.charCodeAt(j))) break;\n          }\n          if (j < len && j !== last) {\n            // Matched!\n            last = j;\n            // Match 1 or more non-path separators\n            for (; j < len; ++j) {\n              if (isPathSeparator(path.charCodeAt(j))) break;\n            }\n            if (j === len) {\n              // We matched a UNC root only\n              // Return the normalized version of the UNC root since there\n              // is nothing left to process\n\n              return `\\\\\\\\${firstPart}\\\\${path.slice(last)}\\\\`;\n            } else if (j !== last) {\n              // We matched a UNC root with leftovers\n\n              device = `\\\\\\\\${firstPart}\\\\${path.slice(last, j)}`;\n              rootEnd = j;\n            }\n          }\n        }\n      } else {\n        rootEnd = 1;\n      }\n    } else if (isWindowsDeviceRoot(code)) {\n      // Possible device root\n\n      if (path.charCodeAt(1) === CHAR_COLON) {\n        device = path.slice(0, 2);\n        rootEnd = 2;\n        if (len > 2) {\n          if (isPathSeparator(path.charCodeAt(2))) {\n            // Treat separator following drive name as an absolute path\n            // indicator\n            isAbsolute = true;\n            rootEnd = 3;\n          }\n        }\n      }\n    }\n  } else if (isPathSeparator(code)) {\n    // `path` contains just a path separator, exit early to avoid unnecessary\n    // work\n    return \"\\\\\";\n  }\n\n  let tail: string;\n  if (rootEnd < len) {\n    tail = normalizeString(\n      path.slice(rootEnd),\n      !isAbsolute,\n      \"\\\\\",\n      isPathSeparator,\n    );\n  } else {\n    tail = \"\";\n  }\n  if (tail.length === 0 && !isAbsolute) tail = \".\";\n  if (tail.length > 0 && isPathSeparator(path.charCodeAt(len - 1))) {\n    tail += \"\\\\\";\n  }\n  if (device === undefined) {\n    if (isAbsolute) {\n      if (tail.length > 0) return `\\\\${tail}`;\n      else return \"\\\\\";\n    } else if (tail.length > 0) {\n      return tail;\n    } else {\n      return \"\";\n    }\n  } else if (isAbsolute) {\n    if (tail.length > 0) return `${device}\\\\${tail}`;\n    else return `${device}\\\\`;\n  } else if (tail.length > 0) {\n    return device + tail;\n  } else {\n    return device;\n  }\n}\n\n/**\n * Verifies whether path is absolute\n * @param path to verify\n */\nexport function isAbsolute(path: string): boolean {\n  assertPath(path);\n  const len = path.length;\n  if (len === 0) return false;\n\n  const code = path.charCodeAt(0);\n  if (isPathSeparator(code)) {\n    return true;\n  } else if (isWindowsDeviceRoot(code)) {\n    // Possible device root\n\n    if (len > 2 && path.charCodeAt(1) === CHAR_COLON) {\n      if (isPathSeparator(path.charCodeAt(2))) return true;\n    }\n  }\n  return false;\n}\n\n/**\n * Join all given a sequence of `paths`,then normalizes the resulting path.\n * @param paths to be joined and normalized\n */\nexport function join(...paths: string[]): string {\n  const pathsCount = paths.length;\n  if (pathsCount === 0) return \".\";\n\n  let joined: string | undefined;\n  let firstPart: string | null = null;\n  for (let i = 0; i < pathsCount; ++i) {\n    const path = paths[i];\n    assertPath(path);\n    if (path.length > 0) {\n      if (joined === undefined) joined = firstPart = path;\n      else joined += `\\\\${path}`;\n    }\n  }\n\n  if (joined === undefined) return \".\";\n\n  // Make sure that the joined path doesn't start with two slashes, because\n  // normalize() will mistake it for an UNC path then.\n  //\n  // This step is skipped when it is very clear that the user actually\n  // intended to point at an UNC path. This is assumed when the first\n  // non-empty string arguments starts with exactly two slashes followed by\n  // at least one more non-slash character.\n  //\n  // Note that for normalize() to treat a path as an UNC path it needs to\n  // have at least 2 components, so we don't filter for that here.\n  // This means that the user can use join to construct UNC paths from\n  // a server name and a share name; for example:\n  //   path.join('//server', 'share') -> '\\\\\\\\server\\\\share\\\\')\n  let needsReplace = true;\n  let slashCount = 0;\n  assert(firstPart != null);\n  if (isPathSeparator(firstPart.charCodeAt(0))) {\n    ++slashCount;\n    const firstLen = firstPart.length;\n    if (firstLen > 1) {\n      if (isPathSeparator(firstPart.charCodeAt(1))) {\n        ++slashCount;\n        if (firstLen > 2) {\n          if (isPathSeparator(firstPart.charCodeAt(2))) ++slashCount;\n          else {\n            // We matched a UNC path in the first part\n            needsReplace = false;\n          }\n        }\n      }\n    }\n  }\n  if (needsReplace) {\n    // Find any more consecutive slashes we need to replace\n    for (; slashCount < joined.length; ++slashCount) {\n      if (!isPathSeparator(joined.charCodeAt(slashCount))) break;\n    }\n\n    // Replace the slashes if needed\n    if (slashCount >= 2) joined = `\\\\${joined.slice(slashCount)}`;\n  }\n\n  return normalize(joined);\n}\n\n/**\n * It will solve the relative path from `from` to `to`, for instance:\n *  from = 'C:\\\\orandea\\\\test\\\\aaa'\n *  to = 'C:\\\\orandea\\\\impl\\\\bbb'\n * The output of the function should be: '..\\\\..\\\\impl\\\\bbb'\n * @param from relative path\n * @param to relative path\n */\nexport function relative(from: string, to: string): string {\n  assertPath(from);\n  assertPath(to);\n\n  if (from === to) return \"\";\n\n  const fromOrig = resolve(from);\n  const toOrig = resolve(to);\n\n  if (fromOrig === toOrig) return \"\";\n\n  from = fromOrig.toLowerCase();\n  to = toOrig.toLowerCase();\n\n  if (from === to) return \"\";\n\n  // Trim any leading backslashes\n  let fromStart = 0;\n  let fromEnd = from.length;\n  for (; fromStart < fromEnd; ++fromStart) {\n    if (from.charCodeAt(fromStart) !== CHAR_BACKWARD_SLASH) break;\n  }\n  // Trim trailing backslashes (applicable to UNC paths only)\n  for (; fromEnd - 1 > fromStart; --fromEnd) {\n    if (from.charCodeAt(fromEnd - 1) !== CHAR_BACKWARD_SLASH) break;\n  }\n  const fromLen = fromEnd - fromStart;\n\n  // Trim any leading backslashes\n  let toStart = 0;\n  let toEnd = to.length;\n  for (; toStart < toEnd; ++toStart) {\n    if (to.charCodeAt(toStart) !== CHAR_BACKWARD_SLASH) break;\n  }\n  // Trim trailing backslashes (applicable to UNC paths only)\n  for (; toEnd - 1 > toStart; --toEnd) {\n    if (to.charCodeAt(toEnd - 1) !== CHAR_BACKWARD_SLASH) break;\n  }\n  const toLen = toEnd - toStart;\n\n  // Compare paths to find the longest common path from root\n  const length = fromLen < toLen ? fromLen : toLen;\n  let lastCommonSep = -1;\n  let i = 0;\n  for (; i <= length; ++i) {\n    if (i === length) {\n      if (toLen > length) {\n        if (to.charCodeAt(toStart + i) === CHAR_BACKWARD_SLASH) {\n          // We get here if `from` is the exact base path for `to`.\n          // For example: from='C:\\\\foo\\\\bar'; to='C:\\\\foo\\\\bar\\\\baz'\n          return toOrig.slice(toStart + i + 1);\n        } else if (i === 2) {\n          // We get here if `from` is the device root.\n          // For example: from='C:\\\\'; to='C:\\\\foo'\n          return toOrig.slice(toStart + i);\n        }\n      }\n      if (fromLen > length) {\n        if (from.charCodeAt(fromStart + i) === CHAR_BACKWARD_SLASH) {\n          // We get here if `to` is the exact base path for `from`.\n          // For example: from='C:\\\\foo\\\\bar'; to='C:\\\\foo'\n          lastCommonSep = i;\n        } else if (i === 2) {\n          // We get here if `to` is the device root.\n          // For example: from='C:\\\\foo\\\\bar'; to='C:\\\\'\n          lastCommonSep = 3;\n        }\n      }\n      break;\n    }\n    const fromCode = from.charCodeAt(fromStart + i);\n    const toCode = to.charCodeAt(toStart + i);\n    if (fromCode !== toCode) break;\n    else if (fromCode === CHAR_BACKWARD_SLASH) lastCommonSep = i;\n  }\n\n  // We found a mismatch before the first common path separator was seen, so\n  // return the original `to`.\n  if (i !== length && lastCommonSep === -1) {\n    return toOrig;\n  }\n\n  let out = \"\";\n  if (lastCommonSep === -1) lastCommonSep = 0;\n  // Generate the relative path based on the path difference between `to` and\n  // `from`\n  for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {\n    if (i === fromEnd || from.charCodeAt(i) === CHAR_BACKWARD_SLASH) {\n      if (out.length === 0) out += \"..\";\n      else out += \"\\\\..\";\n    }\n  }\n\n  // Lastly, append the rest of the destination (`to`) path that comes after\n  // the common path parts\n  if (out.length > 0) {\n    return out + toOrig.slice(toStart + lastCommonSep, toEnd);\n  } else {\n    toStart += lastCommonSep;\n    if (toOrig.charCodeAt(toStart) === CHAR_BACKWARD_SLASH) ++toStart;\n    return toOrig.slice(toStart, toEnd);\n  }\n}\n\n/**\n * Resolves path to a namespace path\n * @param path to resolve to namespace\n */\nexport function toNamespacedPath(path: string): string {\n  // Note: this will *probably* throw somewhere.\n  if (typeof path !== \"string\") return path;\n  if (path.length === 0) return \"\";\n\n  const resolvedPath = resolve(path);\n\n  if (resolvedPath.length >= 3) {\n    if (resolvedPath.charCodeAt(0) === CHAR_BACKWARD_SLASH) {\n      // Possible UNC root\n\n      if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) {\n        const code = resolvedPath.charCodeAt(2);\n        if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) {\n          // Matched non-long UNC root, convert the path to a long UNC path\n          return `\\\\\\\\?\\\\UNC\\\\${resolvedPath.slice(2)}`;\n        }\n      }\n    } else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0))) {\n      // Possible device root\n\n      if (\n        resolvedPath.charCodeAt(1) === CHAR_COLON &&\n        resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH\n      ) {\n        // Matched device root, convert the path to a long UNC path\n        return `\\\\\\\\?\\\\${resolvedPath}`;\n      }\n    }\n  }\n\n  return path;\n}\n\n/**\n * Return the directory name of a `path`.\n * @param path to determine name for\n */\nexport function dirname(path: string): string {\n  assertPath(path);\n  const len = path.length;\n  if (len === 0) return \".\";\n  let rootEnd = -1;\n  let end = -1;\n  let matchedSlash = true;\n  let offset = 0;\n  const code = path.charCodeAt(0);\n\n  // Try to match a root\n  if (len > 1) {\n    if (isPathSeparator(code)) {\n      // Possible UNC root\n\n      rootEnd = offset = 1;\n\n      if (isPathSeparator(path.charCodeAt(1))) {\n        // Matched double path separator at beginning\n        let j = 2;\n        let last = j;\n        // Match 1 or more non-path separators\n        for (; j < len; ++j) {\n          if (isPathSeparator(path.charCodeAt(j))) break;\n        }\n        if (j < len && j !== last) {\n          // Matched!\n          last = j;\n          // Match 1 or more path separators\n          for (; j < len; ++j) {\n            if (!isPathSeparator(path.charCodeAt(j))) break;\n          }\n          if (j < len && j !== last) {\n            // Matched!\n            last = j;\n            // Match 1 or more non-path separators\n            for (; j < len; ++j) {\n              if (isPathSeparator(path.charCodeAt(j))) break;\n            }\n            if (j === len) {\n              // We matched a UNC root only\n              return path;\n            }\n            if (j !== last) {\n              // We matched a UNC root with leftovers\n\n              // Offset by 1 to include the separator after the UNC root to\n              // treat it as a \"normal root\" on top of a (UNC) root\n              rootEnd = offset = j + 1;\n            }\n          }\n        }\n      }\n    } else if (isWindowsDeviceRoot(code)) {\n      // Possible device root\n\n      if (path.charCodeAt(1) === CHAR_COLON) {\n        rootEnd = offset = 2;\n        if (len > 2) {\n          if (isPathSeparator(path.charCodeAt(2))) rootEnd = offset = 3;\n        }\n      }\n    }\n  } else if (isPathSeparator(code)) {\n    // `path` contains just a path separator, exit early to avoid\n    // unnecessary work\n    return path;\n  }\n\n  for (let i = len - 1; i >= offset; --i) {\n    if (isPathSeparator(path.charCodeAt(i))) {\n      if (!matchedSlash) {\n        end = i;\n        break;\n      }\n    } else {\n      // We saw the first non-path separator\n      matchedSlash = false;\n    }\n  }\n\n  if (end === -1) {\n    if (rootEnd === -1) return \".\";\n    else end = rootEnd;\n  }\n  return path.slice(0, end);\n}\n\n/**\n * Return the last portion of a `path`. Trailing directory separators are ignored.\n * @param path to process\n * @param ext of path directory\n */\nexport function basename(path: string, ext = \"\"): string {\n  if (ext !== undefined && typeof ext !== \"string\") {\n    throw new TypeError('\"ext\" argument must be a string');\n  }\n\n  assertPath(path);\n\n  let start = 0;\n  let end = -1;\n  let matchedSlash = true;\n  let i: number;\n\n  // Check for a drive letter prefix so as not to mistake the following\n  // path separator as an extra separator at the end of the path that can be\n  // disregarded\n  if (path.length >= 2) {\n    const drive = path.charCodeAt(0);\n    if (isWindowsDeviceRoot(drive)) {\n      if (path.charCodeAt(1) === CHAR_COLON) start = 2;\n    }\n  }\n\n  if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {\n    if (ext.length === path.length && ext === path) return \"\";\n    let extIdx = ext.length - 1;\n    let firstNonSlashEnd = -1;\n    for (i = path.length - 1; i >= start; --i) {\n      const code = path.charCodeAt(i);\n      if (isPathSeparator(code)) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          start = i + 1;\n          break;\n        }\n      } else {\n        if (firstNonSlashEnd === -1) {\n          // We saw the first non-path separator, remember this index in case\n          // we need it if the extension ends up not matching\n          matchedSlash = false;\n          firstNonSlashEnd = i + 1;\n        }\n        if (extIdx >= 0) {\n          // Try to match the explicit extension\n          if (code === ext.charCodeAt(extIdx)) {\n            if (--extIdx === -1) {\n              // We matched the extension, so mark this as the end of our path\n              // component\n              end = i;\n            }\n          } else {\n            // Extension does not match, so our result is the entire path\n            // component\n            extIdx = -1;\n            end = firstNonSlashEnd;\n          }\n        }\n      }\n    }\n\n    if (start === end) end = firstNonSlashEnd;\n    else if (end === -1) end = path.length;\n    return path.slice(start, end);\n  } else {\n    for (i = path.length - 1; i >= start; --i) {\n      if (isPathSeparator(path.charCodeAt(i))) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          start = i + 1;\n          break;\n        }\n      } else if (end === -1) {\n        // We saw the first non-path separator, mark this as the end of our\n        // path component\n        matchedSlash = false;\n        end = i + 1;\n      }\n    }\n\n    if (end === -1) return \"\";\n    return path.slice(start, end);\n  }\n}\n\n/**\n * Return the extension of the `path`.\n * @param path with extension\n */\nexport function extname(path: string): string {\n  assertPath(path);\n  let start = 0;\n  let startDot = -1;\n  let startPart = 0;\n  let end = -1;\n  let matchedSlash = true;\n  // Track the state of characters (if any) we see before our first dot and\n  // after any path separator we find\n  let preDotState = 0;\n\n  // Check for a drive letter prefix so as not to mistake the following\n  // path separator as an extra separator at the end of the path that can be\n  // disregarded\n\n  if (\n    path.length >= 2 &&\n    path.charCodeAt(1) === CHAR_COLON &&\n    isWindowsDeviceRoot(path.charCodeAt(0))\n  ) {\n    start = startPart = 2;\n  }\n\n  for (let i = path.length - 1; i >= start; --i) {\n    const code = path.charCodeAt(i);\n    if (isPathSeparator(code)) {\n      // If we reached a path separator that was not part of a set of path\n      // separators at the end of the string, stop now\n      if (!matchedSlash) {\n        startPart = i + 1;\n        break;\n      }\n      continue;\n    }\n    if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // extension\n      matchedSlash = false;\n      end = i + 1;\n    }\n    if (code === CHAR_DOT) {\n      // If this is our first dot, mark it as the start of our extension\n      if (startDot === -1) startDot = i;\n      else if (preDotState !== 1) preDotState = 1;\n    } else if (startDot !== -1) {\n      // We saw a non-dot and non-path separator before our dot, so we should\n      // have a good chance at having a non-empty extension\n      preDotState = -1;\n    }\n  }\n\n  if (\n    startDot === -1 ||\n    end === -1 ||\n    // We saw a non-dot character immediately before the dot\n    preDotState === 0 ||\n    // The (right-most) trimmed path component is exactly '..'\n    (preDotState === 1 && startDot === end - 1 && startDot === startPart + 1)\n  ) {\n    return \"\";\n  }\n  return path.slice(startDot, end);\n}\n\n/**\n * Generate a path from `FormatInputPathObject` object.\n * @param pathObject with path\n */\nexport function format(pathObject: FormatInputPathObject): string {\n  if (pathObject === null || typeof pathObject !== \"object\") {\n    throw new TypeError(\n      `The \"pathObject\" argument must be of type Object. Received type ${typeof pathObject}`,\n    );\n  }\n  return _format(\"\\\\\", pathObject);\n}\n\n/**\n * Return a `ParsedPath` object of the `path`.\n * @param path to process\n */\nexport function parse(path: string): ParsedPath {\n  assertPath(path);\n\n  const ret: ParsedPath = { root: \"\", dir: \"\", base: \"\", ext: \"\", name: \"\" };\n\n  const len = path.length;\n  if (len === 0) return ret;\n\n  let rootEnd = 0;\n  let code = path.charCodeAt(0);\n\n  // Try to match a root\n  if (len > 1) {\n    if (isPathSeparator(code)) {\n      // Possible UNC root\n\n      rootEnd = 1;\n      if (isPathSeparator(path.charCodeAt(1))) {\n        // Matched double path separator at beginning\n        let j = 2;\n        let last = j;\n        // Match 1 or more non-path separators\n        for (; j < len; ++j) {\n          if (isPathSeparator(path.charCodeAt(j))) break;\n        }\n        if (j < len && j !== last) {\n          // Matched!\n          last = j;\n          // Match 1 or more path separators\n          for (; j < len; ++j) {\n            if (!isPathSeparator(path.charCodeAt(j))) break;\n          }\n          if (j < len && j !== last) {\n            // Matched!\n            last = j;\n            // Match 1 or more non-path separators\n            for (; j < len; ++j) {\n              if (isPathSeparator(path.charCodeAt(j))) break;\n            }\n            if (j === len) {\n              // We matched a UNC root only\n\n              rootEnd = j;\n            } else if (j !== last) {\n              // We matched a UNC root with leftovers\n\n              rootEnd = j + 1;\n            }\n          }\n        }\n      }\n    } else if (isWindowsDeviceRoot(code)) {\n      // Possible device root\n\n      if (path.charCodeAt(1) === CHAR_COLON) {\n        rootEnd = 2;\n        if (len > 2) {\n          if (isPathSeparator(path.charCodeAt(2))) {\n            if (len === 3) {\n              // `path` contains just a drive root, exit early to avoid\n              // unnecessary work\n              ret.root = ret.dir = path;\n              return ret;\n            }\n            rootEnd = 3;\n          }\n        } else {\n          // `path` contains just a drive root, exit early to avoid\n          // unnecessary work\n          ret.root = ret.dir = path;\n          return ret;\n        }\n      }\n    }\n  } else if (isPathSeparator(code)) {\n    // `path` contains just a path separator, exit early to avoid\n    // unnecessary work\n    ret.root = ret.dir = path;\n    return ret;\n  }\n\n  if (rootEnd > 0) ret.root = path.slice(0, rootEnd);\n\n  let startDot = -1;\n  let startPart = rootEnd;\n  let end = -1;\n  let matchedSlash = true;\n  let i = path.length - 1;\n\n  // Track the state of characters (if any) we see before our first dot and\n  // after any path separator we find\n  let preDotState = 0;\n\n  // Get non-dir info\n  for (; i >= rootEnd; --i) {\n    code = path.charCodeAt(i);\n    if (isPathSeparator(code)) {\n      // If we reached a path separator that was not part of a set of path\n      // separators at the end of the string, stop now\n      if (!matchedSlash) {\n        startPart = i + 1;\n        break;\n      }\n      continue;\n    }\n    if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // extension\n      matchedSlash = false;\n      end = i + 1;\n    }\n    if (code === CHAR_DOT) {\n      // If this is our first dot, mark it as the start of our extension\n      if (startDot === -1) startDot = i;\n      else if (preDotState !== 1) preDotState = 1;\n    } else if (startDot !== -1) {\n      // We saw a non-dot and non-path separator before our dot, so we should\n      // have a good chance at having a non-empty extension\n      preDotState = -1;\n    }\n  }\n\n  if (\n    startDot === -1 ||\n    end === -1 ||\n    // We saw a non-dot character immediately before the dot\n    preDotState === 0 ||\n    // The (right-most) trimmed path component is exactly '..'\n    (preDotState === 1 && startDot === end - 1 && startDot === startPart + 1)\n  ) {\n    if (end !== -1) {\n      ret.base = ret.name = path.slice(startPart, end);\n    }\n  } else {\n    ret.name = path.slice(startPart, startDot);\n    ret.base = path.slice(startPart, end);\n    ret.ext = path.slice(startDot, end);\n  }\n\n  // If the directory is the root, use the entire root as the `dir` including\n  // the trailing slash if any (`C:\\abc` -> `C:\\`). Otherwise, strip out the\n  // trailing slash (`C:\\abc\\def` -> `C:\\abc`).\n  if (startPart > 0 && startPart !== rootEnd) {\n    ret.dir = path.slice(0, startPart - 1);\n  } else ret.dir = ret.root;\n\n  return ret;\n}\n\n/**\n * Converts a file URL to a path string.\n *\n *      fromFileUrl(\"file:///home/foo\"); // \"\\\\home\\\\foo\"\n *      fromFileUrl(\"file:///C:/Users/foo\"); // \"C:\\\\Users\\\\foo\"\n *      fromFileUrl(\"file://localhost/home/foo\"); // \"\\\\\\\\localhost\\\\home\\\\foo\"\n * @param url of a file URL\n */\nexport function fromFileUrl(url: string | URL): string {\n  url = url instanceof URL ? url : new URL(url);\n  if (url.protocol != \"file:\") {\n    throw new TypeError(\"Must be a file URL.\");\n  }\n  let path = decodeURIComponent(\n    url.pathname.replace(/\\//g, \"\\\\\").replace(/%(?![0-9A-Fa-f]{2})/g, \"%25\"),\n  ).replace(/^\\\\*([A-Za-z]:)(\\\\|$)/, \"$1\\\\\");\n  if (url.hostname != \"\") {\n    // Note: The `URL` implementation guarantees that the drive letter and\n    // hostname are mutually exclusive. Otherwise it would not have been valid\n    // to append the hostname and path like this.\n    path = `\\\\\\\\${url.hostname}${path}`;\n  }\n  return path;\n}\n\n/**\n * Converts a path string to a file URL.\n *\n *      toFileUrl(\"\\\\home\\\\foo\"); // new URL(\"file:///home/foo\")\n *      toFileUrl(\"C:\\\\Users\\\\foo\"); // new URL(\"file:///C:/Users/foo\")\n *      toFileUrl(\"\\\\\\\\127.0.0.1\\\\home\\\\foo\"); // new URL(\"file://127.0.0.1/home/foo\")\n * @param path to convert to file URL\n */\nexport function toFileUrl(path: string): URL {\n  if (!isAbsolute(path)) {\n    throw new TypeError(\"Must be an absolute path.\");\n  }\n  const [, hostname, pathname] = path.match(\n    /^(?:[/\\\\]{2}([^/\\\\]+)(?=[/\\\\](?:[^/\\\\]|$)))?(.*)/,\n  )!;\n  const url = new URL(\"file:///\");\n  url.pathname = encodeWhitespace(pathname.replace(/%/g, \"%25\"));\n  if (hostname != null && hostname != \"localhost\") {\n    url.hostname = hostname;\n    if (!url.hostname) {\n      throw new TypeError(\"Invalid hostname.\");\n    }\n  }\n  return 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