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Diffstat (limited to 'std/path/posix.ts')
-rw-r--r-- | std/path/posix.ts | 504 |
1 files changed, 0 insertions, 504 deletions
diff --git a/std/path/posix.ts b/std/path/posix.ts deleted file mode 100644 index ed3649bd3..000000000 --- a/std/path/posix.ts +++ /dev/null @@ -1,504 +0,0 @@ -// Copyright the Browserify authors. MIT License. -// Ported from https://github.com/browserify/path-browserify/ -// This module is browser compatible. - -import type { FormatInputPathObject, ParsedPath } from "./_interface.ts"; -import { CHAR_DOT, CHAR_FORWARD_SLASH } from "./_constants.ts"; - -import { - _format, - assertPath, - isPosixPathSeparator, - normalizeString, -} from "./_util.ts"; - -export const sep = "/"; -export const delimiter = ":"; - -// path.resolve([from ...], to) -/** - * Resolves `pathSegments` into an absolute path. - * @param pathSegments an array of path segments - */ -export function 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 { - if (globalThis.Deno == null) { - throw new TypeError("Resolved a relative path without a CWD."); - } - path = Deno.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 `/${resolvedPath}`; - else return "/"; - } else if (resolvedPath.length > 0) return resolvedPath; - else return "."; -} - -/** - * Normalize the `path`, resolving `'..'` and `'.'` segments. - * @param path to be normalized - */ -export function normalize(path: string): string { - assertPath(path); - - if (path.length === 0) return "."; - - const isAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH; - const trailingSeparator = - path.charCodeAt(path.length - 1) === CHAR_FORWARD_SLASH; - - // Normalize the path - path = normalizeString(path, !isAbsolute, "/", isPosixPathSeparator); - - if (path.length === 0 && !isAbsolute) path = "."; - if (path.length > 0 && trailingSeparator) path += "/"; - - if (isAbsolute) return `/${path}`; - return path; -} - -/** - * Verifies whether provided path is absolute - * @param path to be verified as absolute - */ -export function isAbsolute(path: string): boolean { - assertPath(path); - return path.length > 0 && path.charCodeAt(0) === CHAR_FORWARD_SLASH; -} - -/** - * 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 { - if (paths.length === 0) return "."; - let joined: string | undefined; - for (let i = 0, len = paths.length; i < len; ++i) { - const path = paths[i]; - assertPath(path); - if (path.length > 0) { - if (!joined) joined = path; - else joined += `/${path}`; - } - } - if (!joined) return "."; - return normalize(joined); -} - -/** - * Return the relative path from `from` to `to` based on current working directory. - * @param from path in current working directory - * @param to path in current working directory - */ -export function relative(from: string, to: string): string { - assertPath(from); - assertPath(to); - - if (from === to) return ""; - - from = resolve(from); - to = resolve(to); - - if (from === to) return ""; - - // Trim any leading backslashes - let fromStart = 1; - const fromEnd = from.length; - for (; fromStart < fromEnd; ++fromStart) { - if (from.charCodeAt(fromStart) !== CHAR_FORWARD_SLASH) break; - } - const 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; - } - 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_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; - } - const fromCode = from.charCodeAt(fromStart + i); - const 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); - } -} - -/** - * Resolves path to a namespace path - * @param path to resolve to namespace - */ -export function toNamespacedPath(path: string): string { - // Non-op on posix systems - return path; -} - -/** - * Return the directory name of a `path`. - * @param path to determine name for - */ -export function 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); -} - -/** - * 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 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); - } -} - -/** - * Return the extension of the `path`. - * @param path with extension - */ -export function 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); -} - -/** - * Generate a path from `FormatInputPathObject` object. - * @param pathObject with path - */ -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); -} - -/** - * 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: "" }; - if (path.length === 0) return ret; - const 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; -} - -/** - * Converts a file URL to a path string. - * - * fromFileUrl("file:///home/foo"); // "/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."); - } - return decodeURIComponent( - url.pathname.replace(/%(?![0-9A-Fa-f]{2})/g, "%25"), - ); -} - -/** - * Converts a path string to a file URL. - * - * toFileUrl("/home/foo"); // new URL("file:///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 url = new URL("file:///"); - url.pathname = path.replace(/%/g, "%25").replace(/\\/g, "%5C"); - return url; -} |