import type { FormatInputPathObject, ParsedPath } from "./_interface.ts";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/asserts.ts";
export const sep = "\\";export const delimiter = ";";
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; 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();
if ( path === undefined || path.slice(0, 3).toLowerCase() !== `${resolvedDevice.toLowerCase()}\\` ) { path = `${resolvedDevice}\\`; } }
assertPath(path);
const len = path.length;
if (len === 0) continue;
let rootEnd = 0; let device = ""; let isAbsolute = false; const code = path.charCodeAt(0);
if (len > 1) { if (isPathSeparator(code)) {
isAbsolute = true;
if (isPathSeparator(path.charCodeAt(1))) { let j = 2; let last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { const firstPart = path.slice(last, j); last = j; for (; j < len; ++j) { if (!isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j === len) { device = `\\\\${firstPart}\\${path.slice(last)}`; rootEnd = j; } else if (j !== last) {
device = `\\\\${firstPart}\\${path.slice(last, j)}`; rootEnd = j; } } } } else { rootEnd = 1; } } else if (isWindowsDeviceRoot(code)) {
if (path.charCodeAt(1) === CHAR_COLON) { device = path.slice(0, 2); rootEnd = 2; if (len > 2) { if (isPathSeparator(path.charCodeAt(2))) { isAbsolute = true; rootEnd = 3; } } } } } else if (isPathSeparator(code)) { 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; }
resolvedTail = normalizeString( resolvedTail, !resolvedAbsolute, "\\", isPathSeparator, );
return resolvedDevice + (resolvedAbsolute ? "\\" : "") + resolvedTail || ".";}
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);
if (len > 1) { if (isPathSeparator(code)) {
isAbsolute = true;
if (isPathSeparator(path.charCodeAt(1))) { let j = 2; let last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { const firstPart = path.slice(last, j); last = j; for (; j < len; ++j) { if (!isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j === len) {
return `\\\\${firstPart}\\${path.slice(last)}\\`; } else if (j !== last) {
device = `\\\\${firstPart}\\${path.slice(last, j)}`; rootEnd = j; } } } } else { rootEnd = 1; } } else if (isWindowsDeviceRoot(code)) {
if (path.charCodeAt(1) === CHAR_COLON) { device = path.slice(0, 2); rootEnd = 2; if (len > 2) { if (isPathSeparator(path.charCodeAt(2))) { isAbsolute = true; rootEnd = 3; } } } } } else if (isPathSeparator(code)) { 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 `${device}\\`; } else if (tail.length > 0) { return device + tail; } else { return device; }}
export function isAbsolute(path: string): boolean { assertPath(path); const len = path.length; if (len === 0) return false;
const code = path.charCodeAt(0); if (isPathSeparator(code)) { return true; } else if (isWindowsDeviceRoot(code)) {
if (len > 2 && path.charCodeAt(1) === CHAR_COLON) { if (isPathSeparator(path.charCodeAt(2))) return true; } } return false;}
export function join(...paths: string[]): string { const pathsCount = paths.length; if (pathsCount === 0) return ".";
let joined: string | undefined; let firstPart: string | null = null; for (let i = 0; i < pathsCount; ++i) { const path = paths[i]; assertPath(path); if (path.length > 0) { if (joined === undefined) joined = firstPart = path; else joined += `\\${path}`; } }
if (joined === undefined) return ".";
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 { needsReplace = false; } } } } } if (needsReplace) { for (; slashCount < joined.length; ++slashCount) { if (!isPathSeparator(joined.charCodeAt(slashCount))) break; }
if (slashCount >= 2) joined = `\\${joined.slice(slashCount)}`; }
return normalize(joined);}
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 "";
let fromStart = 0; let fromEnd = from.length; for (; fromStart < fromEnd; ++fromStart) { if (from.charCodeAt(fromStart) !== CHAR_BACKWARD_SLASH) break; } for (; fromEnd - 1 > fromStart; --fromEnd) { if (from.charCodeAt(fromEnd - 1) !== CHAR_BACKWARD_SLASH) break; } const fromLen = fromEnd - fromStart;
let toStart = 0; let toEnd = to.length; for (; toStart < toEnd; ++toStart) { if (to.charCodeAt(toStart) !== CHAR_BACKWARD_SLASH) break; } for (; toEnd - 1 > toStart; --toEnd) { if (to.charCodeAt(toEnd - 1) !== CHAR_BACKWARD_SLASH) break; } const toLen = toEnd - toStart;
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) { return toOrig.slice(toStart + i + 1); } else if (i === 2) { return toOrig.slice(toStart + i); } } if (fromLen > length) { if (from.charCodeAt(fromStart + i) === CHAR_BACKWARD_SLASH) { lastCommonSep = i; } else if (i === 2) { 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; }
if (i !== length && lastCommonSep === -1) { return toOrig; }
let out = ""; if (lastCommonSep === -1) lastCommonSep = 0; for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) { if (i === fromEnd || from.charCodeAt(i) === CHAR_BACKWARD_SLASH) { if (out.length === 0) out += ".."; else out += "\\.."; } }
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); }}
export function toNamespacedPath(path: string): string { 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) {
if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) { const code = resolvedPath.charCodeAt(2); if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) { return `\\\\?\\UNC\\${resolvedPath.slice(2)}`; } } } else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0))) {
if ( resolvedPath.charCodeAt(1) === CHAR_COLON && resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH ) { return `\\\\?\\${resolvedPath}`; } } }
return path;}
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);
if (len > 1) { if (isPathSeparator(code)) {
rootEnd = offset = 1;
if (isPathSeparator(path.charCodeAt(1))) { let j = 2; let last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (!isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j === len) { return path; } if (j !== last) {
rootEnd = offset = j + 1; } } } } } else if (isWindowsDeviceRoot(code)) {
if (path.charCodeAt(1) === CHAR_COLON) { rootEnd = offset = 2; if (len > 2) { if (isPathSeparator(path.charCodeAt(2))) rootEnd = offset = 3; } } } } else if (isPathSeparator(code)) { return path; }
for (let i = len - 1; i >= offset; --i) { if (isPathSeparator(path.charCodeAt(i))) { if (!matchedSlash) { end = i; break; } } else { matchedSlash = false; } }
if (end === -1) { if (rootEnd === -1) return "."; else end = rootEnd; } return path.slice(0, end);}
export function 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 (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 (!matchedSlash) { start = i + 1; break; } } else { if (firstNonSlashEnd === -1) { matchedSlash = false; firstNonSlashEnd = i + 1; } if (extIdx >= 0) { if (code === ext.charCodeAt(extIdx)) { if (--extIdx === -1) { end = i; } } else { 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 (!matchedSlash) { start = i + 1; break; } } else if (end === -1) { matchedSlash = false; end = i + 1; } }
if (end === -1) return ""; return path.slice(start, end); }}
export function extname(path: string): string { assertPath(path); let start = 0; let startDot = -1; let startPart = 0; let end = -1; let matchedSlash = true; let preDotState = 0;
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 (!matchedSlash) { startPart = i + 1; break; } continue; } if (end === -1) { matchedSlash = false; end = i + 1; } if (code === CHAR_DOT) { if (startDot === -1) startDot = i; else if (preDotState !== 1) preDotState = 1; } else if (startDot !== -1) { preDotState = -1; } }
if ( startDot === -1 || end === -1 || preDotState === 0 || (preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) ) { return ""; } return path.slice(startDot, end);}
export function 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);}
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);
if (len > 1) { if (isPathSeparator(code)) {
rootEnd = 1; if (isPathSeparator(path.charCodeAt(1))) { let j = 2; let last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (!isPathSeparator(path.charCodeAt(j))) break; } if (j < len && j !== last) { last = j; for (; j < len; ++j) { if (isPathSeparator(path.charCodeAt(j))) break; } if (j === len) {
rootEnd = j; } else if (j !== last) {
rootEnd = j + 1; } } } } } else if (isWindowsDeviceRoot(code)) {
if (path.charCodeAt(1) === CHAR_COLON) { rootEnd = 2; if (len > 2) { if (isPathSeparator(path.charCodeAt(2))) { if (len === 3) { ret.root = ret.dir = path; return ret; } rootEnd = 3; } } else { ret.root = ret.dir = path; return ret; } } } } else if (isPathSeparator(code)) { 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;
let preDotState = 0;
for (; i >= rootEnd; --i) { code = path.charCodeAt(i); if (isPathSeparator(code)) { if (!matchedSlash) { startPart = i + 1; break; } continue; } if (end === -1) { matchedSlash = false; end = i + 1; } if (code === CHAR_DOT) { if (startDot === -1) startDot = i; else if (preDotState !== 1) preDotState = 1; } else if (startDot !== -1) { preDotState = -1; } }
if ( startDot === -1 || end === -1 || preDotState === 0 || (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 (startPart > 0 && startPart !== rootEnd) { ret.dir = path.slice(0, startPart - 1); } else ret.dir = ret.root;
return ret;}
export function fromFileUrl(url: string | URL): string { 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]:)(\\|$)/, "$1\\"); if (url.hostname != "") { path = `\\\\${url.hostname}${path}`; } return path;}
export function toFileUrl(path: string): URL { if (!isAbsolute(path)) { throw new TypeError("Must be an absolute path."); } const [, hostname, pathname] = path.match( /^(?:[/\\]{2}([^/\\]+)(?=[/\\](?:[^/\\]|$)))?(.*)/, )!; 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;}