mirror of
https://github.com/denoland/deno.git
synced 2024-11-24 15:19:26 -05:00
970 lines
28 KiB
TypeScript
970 lines
28 KiB
TypeScript
// Copyright the Browserify authors. MIT License.
|
|
// Ported from https://github.com/browserify/path-browserify/
|
|
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
|
|
// TODO(petamoriken): enable prefer-primordials for node polyfills
|
|
// deno-lint-ignore-file prefer-primordials
|
|
|
|
import type {
|
|
FormatInputPathObject,
|
|
ParsedPath,
|
|
} from "ext:deno_node/path/_interface.ts";
|
|
import {
|
|
CHAR_BACKWARD_SLASH,
|
|
CHAR_COLON,
|
|
CHAR_DOT,
|
|
CHAR_QUESTION_MARK,
|
|
} from "ext:deno_node/path/_constants.ts";
|
|
import { ERR_INVALID_ARG_TYPE } from "ext:deno_node/internal/errors.ts";
|
|
|
|
import {
|
|
_format,
|
|
assertPath,
|
|
isPathSeparator,
|
|
isWindowsDeviceRoot,
|
|
normalizeString,
|
|
} from "ext:deno_node/path/_util.ts";
|
|
import { assert } from "ext:deno_node/_util/asserts.ts";
|
|
|
|
export const sep = "\\";
|
|
export const delimiter = ";";
|
|
|
|
/**
|
|
* Resolves path segments into a `path`
|
|
* @param pathSegments to process to path
|
|
*/
|
|
export function resolve(...pathSegments: string[]): string {
|
|
let resolvedDevice = "";
|
|
let resolvedTail = "";
|
|
let resolvedAbsolute = false;
|
|
|
|
for (let i = pathSegments.length - 1; i >= -1; i--) {
|
|
let path: string;
|
|
// deno-lint-ignore no-explicit-any
|
|
const { Deno } = globalThis as any;
|
|
if (i >= 0) {
|
|
path = pathSegments[i];
|
|
} else if (!resolvedDevice) {
|
|
if (typeof Deno?.cwd !== "function") {
|
|
throw new TypeError("Resolved a drive-letter-less path without a CWD.");
|
|
}
|
|
path = Deno.cwd();
|
|
} else {
|
|
if (
|
|
typeof Deno?.env?.get !== "function" || typeof Deno?.cwd !== "function"
|
|
) {
|
|
throw new TypeError("Resolved a relative path without a CWD.");
|
|
}
|
|
path = 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()
|
|
) {
|
|
// This path points to another device so it is not applicable
|
|
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: string): string {
|
|
assertPath(path);
|
|
const len = path.length;
|
|
if (len === 0) return ".";
|
|
let rootEnd = 0;
|
|
let device: string | undefined;
|
|
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: string;
|
|
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 `${device}\\`;
|
|
} else if (tail.length > 0) {
|
|
return device + tail;
|
|
} else {
|
|
return device;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Verifies whether path is absolute
|
|
* @param path to verify
|
|
*/
|
|
export function isAbsolute(path: string): boolean {
|
|
assertPath(path);
|
|
const len = path.length;
|
|
if (len === 0) return false;
|
|
|
|
const code = path.charCodeAt(0);
|
|
if (isPathSeparator(code)) {
|
|
return true;
|
|
} else if (isWindowsDeviceRoot(code)) {
|
|
// Possible device root
|
|
|
|
if (len > 2 && path.charCodeAt(1) === CHAR_COLON) {
|
|
if (isPathSeparator(path.charCodeAt(2))) return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Join all given a sequence of `paths`,then normalizes the resulting path.
|
|
* @param paths to be joined and normalized
|
|
*/
|
|
export function join(...paths: string[]): string {
|
|
const pathsCount = paths.length;
|
|
if (pathsCount === 0) return ".";
|
|
|
|
let joined: string | undefined;
|
|
let firstPart: string | null = null;
|
|
for (let i = 0; i < pathsCount; ++i) {
|
|
const path = paths[i];
|
|
assertPath(path);
|
|
if (path.length > 0) {
|
|
if (joined === undefined) joined = firstPart = path;
|
|
else joined += `\\${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: string, to: string): string {
|
|
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: string): string {
|
|
// 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: string): string {
|
|
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: string, ext = ""): string {
|
|
if (ext !== undefined && typeof ext !== "string") {
|
|
throw new ERR_INVALID_ARG_TYPE("ext", ["string"], ext);
|
|
}
|
|
|
|
assertPath(path);
|
|
|
|
let start = 0;
|
|
let end = -1;
|
|
let matchedSlash = true;
|
|
let i: number;
|
|
|
|
// 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: string): string {
|
|
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: FormatInputPathObject): string {
|
|
if (pathObject === null || typeof pathObject !== "object") {
|
|
throw new ERR_INVALID_ARG_TYPE("pathObject", ["Object"], pathObject);
|
|
}
|
|
return _format("\\", pathObject);
|
|
}
|
|
|
|
/**
|
|
* Return a `ParsedPath` object of the `path`.
|
|
* @param path to process
|
|
*/
|
|
export function parse(path: string): ParsedPath {
|
|
assertPath(path);
|
|
|
|
const ret: ParsedPath = { 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;
|
|
}
|
|
|
|
export default {
|
|
basename,
|
|
delimiter,
|
|
dirname,
|
|
extname,
|
|
format,
|
|
isAbsolute,
|
|
join,
|
|
normalize,
|
|
parse,
|
|
relative,
|
|
resolve,
|
|
sep,
|
|
toNamespacedPath,
|
|
};
|