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Diffstat (limited to 'ext/node/polyfills/path/_win32.ts')
| -rw-r--r-- | ext/node/polyfills/path/_win32.ts | 1025 |
1 files changed, 1025 insertions, 0 deletions
diff --git a/ext/node/polyfills/path/_win32.ts b/ext/node/polyfills/path/_win32.ts new file mode 100644 index 000000000..73321e709 --- /dev/null +++ b/ext/node/polyfills/path/_win32.ts @@ -0,0 +1,1025 @@ +// Copyright the Browserify authors. MIT License. +// Ported from https://github.com/browserify/path-browserify/ +// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license. + +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, + encodeWhitespace, + 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; +} + +/** + * Converts a file URL to a path string. + * + * ```ts + * fromFileUrl("file:///home/foo"); // "\\home\\foo" + * fromFileUrl("file:///C:/Users/foo"); // "C:\\Users\\foo" + * fromFileUrl("file://localhost/home/foo"); // "\\\\localhost\\home\\foo" + * ``` + * @param url of a file URL + */ +export function fromFileUrl(url: 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]:)(\\|$)/, "$1\\"); + if (url.hostname != "") { + // Note: The `URL` implementation guarantees that the drive letter and + // hostname are mutually exclusive. Otherwise it would not have been valid + // to append the hostname and path like this. + path = `\\\\${url.hostname}${path}`; + } + return path; +} + +/** + * Converts a path string to a file URL. + * + * ```ts + * toFileUrl("\\home\\foo"); // new URL("file:///home/foo") + * toFileUrl("C:\\Users\\foo"); // new URL("file:///C:/Users/foo") + * toFileUrl("\\\\127.0.0.1\\home\\foo"); // new URL("file://127.0.0.1/home/foo") + * ``` + * @param path to convert to file URL + */ +export function toFileUrl(path: string): URL { + if (!isAbsolute(path)) { + throw new TypeError("Must be an absolute path."); + } + const [, hostname, pathname] = path.match( + /^(?:[/\\]{2}([^/\\]+)(?=[/\\](?:[^/\\]|$)))?(.*)/, + )!; + 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; +} + +export default { + basename, + delimiter, + dirname, + extname, + format, + fromFileUrl, + isAbsolute, + join, + normalize, + parse, + relative, + resolve, + sep, + toFileUrl, + toNamespacedPath, +}; |