mirror of
https://github.com/denoland/deno.git
synced 2024-12-17 21:03:01 -05:00
1431 lines
43 KiB
TypeScript
1431 lines
43 KiB
TypeScript
// Copyright the Browserify authors. MIT License.
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// Ported from https://github.com/browserify/path-browserify/
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const { cwd, env } = Deno;
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import { FormatInputPathObject, ParsedPath } from "./interface.ts";
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import {
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isWindows,
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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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} from "./constants.ts";
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function assertPath(path: string): void {
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if (typeof path !== "string") {
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throw new TypeError(
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`Path must be a string. Received ${JSON.stringify(path)}`
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);
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}
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}
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function isPosixPathSeparator(code: number): boolean {
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return code === CHAR_FORWARD_SLASH;
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}
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function isPathSeparator(code: number): boolean {
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return isPosixPathSeparator(code) || code === CHAR_BACKWARD_SLASH;
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}
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function isWindowsDeviceRoot(code: number): boolean {
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return (
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(code >= CHAR_LOWERCASE_A && code <= CHAR_LOWERCASE_Z) ||
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(code >= CHAR_UPPERCASE_A && code <= CHAR_UPPERCASE_Z)
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);
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}
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// Resolves . and .. elements in a path with directory names
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function normalizeString(
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path: string,
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allowAboveRoot: boolean,
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separator: string,
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isPathSeparator: (code: number) => boolean
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): string {
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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: number;
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for (let i = 0, len = path.length; i <= len; ++i) {
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if (i < len) code = path.charCodeAt(i);
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else if (isPathSeparator(code)) break;
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else 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 (lastSlash !== i - 1 && dots === 2) {
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if (
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res.length < 2 ||
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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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) {
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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 === 2 || res.length === 1) {
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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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if (res.length > 0) res += `${separator}..`;
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else res = "..";
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lastSegmentLength = 2;
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}
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} else {
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if (res.length > 0) res += separator + path.slice(lastSlash + 1, i);
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else 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: string, pathObject: FormatInputPathObject): string {
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const dir: string | null = pathObject.dir || pathObject.root;
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const base: string =
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pathObject.base || (pathObject.name || "") + (pathObject.ext || "");
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if (!dir) return base;
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if (dir === pathObject.root) return dir + base;
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return dir + sep + base;
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}
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export const win32 = {
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// path.resolve([from ...], to)
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resolve(...pathSegments: string[]): string {
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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 = pathSegments.length - 1; i >= -1; i--) {
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let path: string;
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if (i >= 0) {
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path = pathSegments[i];
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} else if (!resolvedDevice) {
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path = 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 = env()[`=${resolvedDevice}`] || cwd();
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// Verify that a cwd was found and that it actually points
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// to our drive. If not, default to the drive's root.
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if (
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path === undefined ||
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path.slice(0, 3).toLowerCase() !== `${resolvedDevice.toLowerCase()}\\`
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) {
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path = `${resolvedDevice}\\`;
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}
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}
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assertPath(path);
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const len = path.length;
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// Skip empty entries
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if (len === 0) continue;
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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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// 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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for (; j < len; ++j) {
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if (isPathSeparator(path.charCodeAt(j))) break;
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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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for (; j < len; ++j) {
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if (!isPathSeparator(path.charCodeAt(j))) break;
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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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for (; j < len; ++j) {
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if (isPathSeparator(path.charCodeAt(j))) break;
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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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device = `\\\\${firstPart}\\${path.slice(last)}`;
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rootEnd = j;
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} else 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)) {
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// Possible device root
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if (path.charCodeAt(1) === CHAR_COLON) {
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device = path.slice(0, 2);
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rootEnd = 2;
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if (len > 2) {
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if (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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}
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}
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} else 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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if (
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device.length > 0 &&
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resolvedDevice.length > 0 &&
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device.toLowerCase() !== resolvedDevice.toLowerCase()
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) {
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// This path points to another device so it is not applicable
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continue;
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}
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if (resolvedDevice.length === 0 && device.length > 0) {
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resolvedDevice = device;
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}
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if (!resolvedAbsolute) {
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resolvedTail = `${path.slice(rootEnd)}\\${resolvedTail}`;
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resolvedAbsolute = isAbsolute;
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}
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if (resolvedAbsolute && resolvedDevice.length > 0) break;
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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(
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resolvedTail,
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!resolvedAbsolute,
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"\\",
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isPathSeparator
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);
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return (
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resolvedDevice + (resolvedAbsolute ? "\\" : "") + resolvedTail || "."
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);
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},
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normalize(path: string): string {
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assertPath(path);
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const len = path.length;
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if (len === 0) return ".";
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let rootEnd = 0;
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let device: string;
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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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// 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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for (; j < len; ++j) {
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if (isPathSeparator(path.charCodeAt(j))) break;
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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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for (; j < len; ++j) {
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if (!isPathSeparator(path.charCodeAt(j))) break;
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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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for (; j < len; ++j) {
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if (isPathSeparator(path.charCodeAt(j))) break;
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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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} else 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)) {
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// Possible device root
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if (path.charCodeAt(1) === CHAR_COLON) {
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device = path.slice(0, 2);
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rootEnd = 2;
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if (len > 2) {
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if (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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}
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}
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} else if (isPathSeparator(code)) {
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// `path` contains just a path separator, exit early to avoid unnecessary
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// work
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return "\\";
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}
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let tail: string;
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if (rootEnd < len) {
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tail = normalizeString(
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path.slice(rootEnd),
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!isAbsolute,
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"\\",
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isPathSeparator
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);
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} else {
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tail = "";
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}
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if (tail.length === 0 && !isAbsolute) 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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if (isAbsolute) {
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if (tail.length > 0) return `\\${tail}`;
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else return "\\";
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} else if (tail.length > 0) {
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return tail;
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} else {
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return "";
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}
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} else if (isAbsolute) {
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if (tail.length > 0) return `${device}\\${tail}`;
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else return `${device}\\`;
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} else if (tail.length > 0) {
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return device + tail;
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} else {
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return device;
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}
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},
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isAbsolute(path: string): boolean {
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assertPath(path);
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const len = path.length;
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if (len === 0) return false;
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const code = path.charCodeAt(0);
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if (isPathSeparator(code)) {
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return true;
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} else if (isWindowsDeviceRoot(code)) {
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// Possible device root
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if (len > 2 && path.charCodeAt(1) === CHAR_COLON) {
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if (isPathSeparator(path.charCodeAt(2))) return true;
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}
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}
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return false;
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},
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join(...paths: string[]): string {
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const pathsCount = paths.length;
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if (pathsCount === 0) return ".";
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let joined: string;
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let firstPart: string;
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for (let i = 0; i < pathsCount; ++i) {
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let path = paths[i];
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assertPath(path);
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if (path.length > 0) {
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if (joined === undefined) joined = firstPart = path;
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else joined += `\\${path}`;
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}
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}
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if (joined === undefined) 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 an UNC path then.
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//
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// This step is skipped when it is very clear that the user actually
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// intended to point at an UNC path. This is assumed when the first
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// non-empty string arguments starts with exactly two slashes followed by
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// at least one more non-slash character.
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//
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// Note that for normalize() to treat a path as an UNC path it needs to
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// have at least 2 components, so we don't filter for that here.
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// This means that the user can use join to construct UNC paths from
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// a server name and a share name; for example:
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// path.join('//server', 'share') -> '\\\\server\\share\\')
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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) {
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if (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))) ++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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}
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if (needsReplace) {
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// Find any more consecutive slashes we need to replace
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for (; slashCount < joined.length; ++slashCount) {
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if (!isPathSeparator(joined.charCodeAt(slashCount))) break;
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}
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// Replace the slashes if needed
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if (slashCount >= 2) 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: string, to: string): string {
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assertPath(from);
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assertPath(to);
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if (from === to) return "";
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let fromOrig = win32.resolve(from);
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let toOrig = win32.resolve(to);
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if (fromOrig === toOrig) return "";
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from = fromOrig.toLowerCase();
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to = toOrig.toLowerCase();
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if (from === to) return "";
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// Trim any leading backslashes
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let fromStart = 0;
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let fromEnd = from.length;
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for (; fromStart < fromEnd; ++fromStart) {
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if (from.charCodeAt(fromStart) !== CHAR_BACKWARD_SLASH) break;
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}
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// Trim trailing backslashes (applicable to UNC paths only)
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for (; fromEnd - 1 > fromStart; --fromEnd) {
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if (from.charCodeAt(fromEnd - 1) !== CHAR_BACKWARD_SLASH) break;
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}
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let fromLen = fromEnd - fromStart;
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// Trim any leading backslashes
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let toStart = 0;
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let toEnd = to.length;
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for (; toStart < toEnd; ++toStart) {
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if (to.charCodeAt(toStart) !== CHAR_BACKWARD_SLASH) break;
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}
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// Trim trailing backslashes (applicable to UNC paths only)
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for (; toEnd - 1 > toStart; --toEnd) {
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if (to.charCodeAt(toEnd - 1) !== CHAR_BACKWARD_SLASH) break;
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}
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let toLen = toEnd - toStart;
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// Compare paths to find the longest common path from root
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let 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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if (i === length) {
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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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} else 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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break;
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}
|
|
let fromCode = from.charCodeAt(fromStart + i);
|
|
let 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);
|
|
}
|
|
},
|
|
|
|
toNamespacedPath(path: string): string {
|
|
// 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 >= 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;
|
|
},
|
|
|
|
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);
|
|
},
|
|
|
|
basename(path: string, ext = ""): string {
|
|
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: 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);
|
|
}
|
|
},
|
|
|
|
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);
|
|
},
|
|
|
|
format(pathObject: FormatInputPathObject): string {
|
|
if (pathObject === null || typeof pathObject !== "object") {
|
|
throw new TypeError(
|
|
`The "pathObject" argument must be of type Object. Received type ${typeof pathObject}`
|
|
);
|
|
}
|
|
return _format("\\", pathObject);
|
|
},
|
|
|
|
parse(path: string): ParsedPath {
|
|
assertPath(path);
|
|
|
|
let 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;
|
|
},
|
|
|
|
sep: "\\",
|
|
delimiter: ";",
|
|
win32: null,
|
|
posix: null
|
|
};
|
|
|
|
export const posix = {
|
|
// path.resolve([from ...], to)
|
|
resolve(...pathSegments: string[]): string {
|
|
let resolvedPath = "";
|
|
let resolvedAbsolute = false;
|
|
|
|
for (let i = pathSegments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
|
|
let path: string;
|
|
|
|
if (i >= 0) path = pathSegments[i];
|
|
else path = cwd();
|
|
|
|
assertPath(path);
|
|
|
|
// Skip empty entries
|
|
if (path.length === 0) {
|
|
continue;
|
|
}
|
|
|
|
resolvedPath = `${path}/${resolvedPath}`;
|
|
resolvedAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
}
|
|
|
|
// At this point the path should be resolved to a full absolute path, but
|
|
// handle relative paths to be safe (might happen when process.cwd() fails)
|
|
|
|
// Normalize the path
|
|
resolvedPath = normalizeString(
|
|
resolvedPath,
|
|
!resolvedAbsolute,
|
|
"/",
|
|
isPosixPathSeparator
|
|
);
|
|
|
|
if (resolvedAbsolute) {
|
|
if (resolvedPath.length > 0) return `/${resolvedPath}`;
|
|
else return "/";
|
|
} else if (resolvedPath.length > 0) return resolvedPath;
|
|
else return ".";
|
|
},
|
|
|
|
normalize(path: string): string {
|
|
assertPath(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 && !isAbsolute) path = ".";
|
|
if (path.length > 0 && trailingSeparator) path += "/";
|
|
|
|
if (isAbsolute) return `/${path}`;
|
|
return path;
|
|
},
|
|
|
|
isAbsolute(path: string): boolean {
|
|
assertPath(path);
|
|
return path.length > 0 && path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
},
|
|
|
|
join(...paths: string[]): string {
|
|
if (paths.length === 0) return ".";
|
|
let joined: string | undefined;
|
|
for (let i = 0, len = paths.length; i < len; ++i) {
|
|
let path = paths[i];
|
|
assertPath(path);
|
|
if (path.length > 0) {
|
|
if (!joined) joined = path;
|
|
else joined += `/${path}`;
|
|
}
|
|
}
|
|
if (!joined) return ".";
|
|
return posix.normalize(joined);
|
|
},
|
|
|
|
relative(from: string, to: string): string {
|
|
assertPath(from);
|
|
assertPath(to);
|
|
|
|
if (from === to) return "";
|
|
|
|
from = posix.resolve(from);
|
|
to = posix.resolve(to);
|
|
|
|
if (from === to) return "";
|
|
|
|
// Trim any leading backslashes
|
|
let fromStart = 1;
|
|
let fromEnd = from.length;
|
|
for (; fromStart < fromEnd; ++fromStart) {
|
|
if (from.charCodeAt(fromStart) !== CHAR_FORWARD_SLASH) break;
|
|
}
|
|
let fromLen = fromEnd - fromStart;
|
|
|
|
// Trim any leading backslashes
|
|
let toStart = 1;
|
|
const toEnd = to.length;
|
|
for (; toStart < toEnd; ++toStart) {
|
|
if (to.charCodeAt(toStart) !== CHAR_FORWARD_SLASH) break;
|
|
}
|
|
let toLen = toEnd - toStart;
|
|
|
|
// Compare paths to find the longest common path from root
|
|
let 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_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);
|
|
} else 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'; to='/'
|
|
lastCommonSep = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
let fromCode = from.charCodeAt(fromStart + i);
|
|
let toCode = to.charCodeAt(toStart + i);
|
|
if (fromCode !== toCode) break;
|
|
else if (fromCode === CHAR_FORWARD_SLASH) lastCommonSep = i;
|
|
}
|
|
|
|
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) {
|
|
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 + to.slice(toStart + lastCommonSep);
|
|
else {
|
|
toStart += lastCommonSep;
|
|
if (to.charCodeAt(toStart) === CHAR_FORWARD_SLASH) ++toStart;
|
|
return to.slice(toStart);
|
|
}
|
|
},
|
|
|
|
toNamespacedPath(path: string): string {
|
|
// Non-op on posix systems
|
|
return path;
|
|
},
|
|
|
|
dirname(path: string): string {
|
|
assertPath(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: string, ext = ""): string {
|
|
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: number;
|
|
|
|
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 >= 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);
|
|
} else {
|
|
for (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: string): string {
|
|
assertPath(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(pathObject: FormatInputPathObject): string {
|
|
if (pathObject === null || typeof pathObject !== "object") {
|
|
throw new TypeError(
|
|
`The "pathObject" argument must be of type Object. Received type ${typeof pathObject}`
|
|
);
|
|
}
|
|
return _format("/", pathObject);
|
|
},
|
|
|
|
parse(path: string): ParsedPath {
|
|
assertPath(path);
|
|
|
|
let ret: ParsedPath = { root: "", dir: "", base: "", ext: "", name: "" };
|
|
if (path.length === 0) return ret;
|
|
let isAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;
|
|
let start: number;
|
|
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 (
|
|
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) {
|
|
if (startPart === 0 && isAbsolute) {
|
|
ret.base = ret.name = path.slice(1, end);
|
|
} else {
|
|
ret.base = ret.name = path.slice(startPart, end);
|
|
}
|
|
}
|
|
} else {
|
|
if (startPart === 0 && isAbsolute) {
|
|
ret.name = path.slice(1, startDot);
|
|
ret.base = path.slice(1, end);
|
|
} else {
|
|
ret.name = path.slice(startPart, startDot);
|
|
ret.base = path.slice(startPart, 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;
|
|
|
|
const module = isWindows ? win32 : posix;
|
|
|
|
export const resolve = module.resolve;
|
|
export const normalize = module.normalize;
|
|
export const isAbsolute = module.isAbsolute;
|
|
export const join = module.join;
|
|
export const relative = module.relative;
|
|
export const toNamespacedPath = module.toNamespacedPath;
|
|
export const dirname = module.dirname;
|
|
export const basename = module.basename;
|
|
export const extname = module.extname;
|
|
export const format = module.format;
|
|
export const parse = module.parse;
|
|
export const sep = module.sep;
|
|
export const delimiter = module.delimiter;
|