one/dist/esm/platform/file-system/paths.mjs

One is a React framework for web, iOS, and Android apps.

function uriObjectToString(path) {
	return typeof path === "string" ? path : path.uri;
}
function isPathSeparator(code) {
	return code === "/";
}
function normalizeString(path, allowAboveRoot, separator) {
	let res = "";
	let lastSegmentLength = 0;
	let lastSlash = -1;
	let dots = 0;
	let code = "";
	for (let i = 0; i <= path.length; ++i) {
		if (i < path.length) code = path.charAt(i);
		else if (isPathSeparator(code)) break;
		else code = "/";
		if (isPathSeparator(code)) {
			if (lastSlash === i - 1 || dots === 1) {} else if (dots === 2) {
				if (res.length < 2 || lastSegmentLength !== 2 || res.charAt(res.length - 1) !== "." || res.charAt(res.length - 2) !== ".") {
					if (res.length > 2) {
						const lastSlashIndex = res.lastIndexOf(separator);
						if (lastSlashIndex === -1) {
							res = "";
							lastSegmentLength = 0;
						} else {
							res = res.slice(0, lastSlashIndex);
							lastSegmentLength = res.length - 1 - res.lastIndexOf(separator);
						}
						lastSlash = i;
						dots = 0;
						continue;
					} else if (res.length !== 0) {
						res = "";
						lastSegmentLength = 0;
						lastSlash = i;
						dots = 0;
						continue;
					}
				}
				if (allowAboveRoot) {
					res += res.length > 0 ? `${separator}..` : "..";
					lastSegmentLength = 2;
				}
			} else {
				if (res.length > 0) res += `${separator}${path.slice(lastSlash + 1, i)}`;
				else res = path.slice(lastSlash + 1, i);
				lastSegmentLength = i - lastSlash - 1;
			}
			lastSlash = i;
			dots = 0;
		} else if (code === "." && dots !== -1) {
			++dots;
		} else {
			dots = -1;
		}
	}
	return res;
}
function resolvePath(...args) {
	let resolvedPath = "";
	let resolvedAbsolute = false;
	for (let i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
		const path = i >= 0 ? args[i] : "";
		if (!path || path.length === 0) continue;
		resolvedPath = `${path}/${resolvedPath}`;
		resolvedAbsolute = !!(path && path.charAt(0) === "/");
	}
	resolvedPath = normalizeString(resolvedPath, !resolvedAbsolute, "/");
	if (resolvedAbsolute) return `/${resolvedPath}`;
	return resolvedPath.length > 0 ? resolvedPath : ".";
}
function normalizePath(path) {
	if (path.length === 0) return ".";
	const isAbsolute = path.charAt(0) === "/";
	const trailingSeparator = path.charAt(path.length - 1) === "/";
	path = normalizeString(path, !isAbsolute, "/");
	if (path.length === 0) {
		if (isAbsolute) return "/";
		return trailingSeparator ? "./" : ".";
	}
	if (trailingSeparator) path += "/";
	return isAbsolute ? `/${path}` : path;
}
function isAbsolutePath(path) {
	return path.length > 0 && path.charAt(0) === "/";
}
function joinPaths(...args) {
	if (args.length === 0) return ".";
	const path = [];
	for (const arg of args) {
		if (arg && arg.length > 0) path.push(arg);
	}
	if (path.length === 0) return ".";
	return normalizePath(path.join("/"));
}
function relativePaths(from, to) {
	if (from === to) return "";
	from = resolvePath(from);
	to = resolvePath(to);
	if (from === to) return "";
	const fromStart = 1;
	const fromEnd = from.length;
	const fromLen = fromEnd - fromStart;
	const toStart = 1;
	const toLen = to.length - toStart;
	const length = fromLen < toLen ? fromLen : toLen;
	let lastCommonSep = -1;
	let i = 0;
	for (; i < length; i++) {
		const fromChar = from.charAt(fromStart + i);
		if (fromChar !== to.charAt(toStart + i)) break;
		else if (fromChar === "/") lastCommonSep = i;
	}
	if (i === length) {
		if (toLen > length) {
			if (to.charAt(toStart + i) === "/") return to.slice(toStart + i + 1);
			if (i === 0) return to.slice(toStart + i);
		} else if (fromLen > length) {
			if (from.charAt(fromStart + i) === "/") lastCommonSep = i;
			else if (i === 0) lastCommonSep = 0;
		}
	}
	let out = "";
	for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {
		if (i === fromEnd || from.charAt(i) === "/") {
			out += out.length === 0 ? ".." : "/..";
		}
	}
	return `${out}${to.slice(toStart + lastCommonSep)}`;
}
function dirnamePath(path) {
	if (path.length === 0) return ".";
	const hasRoot = path.charAt(0) === "/";
	let end = -1;
	let matchedSlash = true;
	for (let i = path.length - 1; i >= 1; --i) {
		if (path.charAt(i) === "/") {
			if (!matchedSlash) {
				end = i;
				break;
			}
		} else {
			matchedSlash = false;
		}
	}
	if (end === -1) return hasRoot ? "/" : ".";
	if (hasRoot && end === 1) return "//";
	return path.slice(0, end);
}
function basenamePath(path, suffix) {
	let start = 0;
	let end = -1;
	let matchedSlash = true;
	if (suffix !== void 0 && suffix.length > 0 && suffix.length <= path.length) {
		if (suffix === path) return "";
		let extIdx = suffix.length - 1;
		let firstNonSlashEnd = -1;
		for (let i = path.length - 1; i >= 0; --i) {
			const code = path.charAt(i);
			if (code === "/") {
				if (!matchedSlash) {
					start = i + 1;
					break;
				}
			} else {
				if (firstNonSlashEnd === -1) {
					matchedSlash = false;
					firstNonSlashEnd = i + 1;
				}
				if (extIdx >= 0) {
					if (code === suffix.charAt(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);
	}
	for (let i = path.length - 1; i >= 0; --i) {
		if (path.charAt(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);
}
function extnamePath(path) {
	let startDot = -1;
	let startPart = 0;
	let end = -1;
	let matchedSlash = true;
	let preDotState = 0;
	for (let i = path.length - 1; i >= 0; --i) {
		const code = path.charAt(i);
		if (code === "/") {
			if (!matchedSlash) {
				startPart = i + 1;
				break;
			}
			continue;
		}
		if (end === -1) {
			matchedSlash = false;
			end = i + 1;
		}
		if (code === ".") {
			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);
}
function parsePath(path) {
	const ret = {
		root: "",
		dir: "",
		base: "",
		ext: "",
		name: ""
	};
	if (path.length === 0) return ret;
	const isAbsolute = path.charAt(0) === "/";
	let start;
	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;
	let preDotState = 0;
	for (; i >= start; --i) {
		const code = path.charAt(i);
		if (code === "/") {
			if (!matchedSlash) {
				startPart = i + 1;
				break;
			}
			continue;
		}
		if (end === -1) {
			matchedSlash = false;
			end = i + 1;
		}
		if (code === ".") {
			if (startDot === -1) startDot = i;
			else if (preDotState !== 1) preDotState = 1;
		} else if (startDot !== -1) {
			preDotState = -1;
		}
	}
	if (end !== -1) {
		const baseStart = startPart === 0 && isAbsolute ? 1 : startPart;
		if (startDot === -1 || preDotState === 0 || preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
			ret.base = ret.name = path.slice(baseStart, end);
		} else {
			ret.name = path.slice(baseStart, startDot);
			ret.base = path.slice(baseStart, end);
			ret.ext = path.slice(startDot, end);
		}
	}
	if (startPart > 0) ret.dir = path.slice(0, startPart - 1);
	else if (isAbsolute) ret.dir = "/";
	return ret;
}
const percentRegEx = /%/g;
const backslashRegEx = /\\/g;
const newlineRegEx = /\n/g;
const carriageReturnRegEx = /\r/g;
const tabRegEx = /\t/g;
const questionRegex = /\?/g;
const hashRegex = /#/g;
const spaceRegEx = / /g;
function encodePathChars(filepath) {
	if (filepath.indexOf("%") !== -1) filepath = filepath.replace(percentRegEx, "%25");
	if (filepath.indexOf("\\") !== -1) filepath = filepath.replace(backslashRegEx, "%5C");
	if (filepath.indexOf("\n") !== -1) filepath = filepath.replace(newlineRegEx, "%0A");
	if (filepath.indexOf("\r") !== -1) filepath = filepath.replace(carriageReturnRegEx, "%0D");
	if (filepath.indexOf("	") !== -1) filepath = filepath.replace(tabRegEx, "%09");
	if (filepath.indexOf(" ") !== -1) filepath = filepath.replace(spaceRegEx, "%20");
	return filepath;
}
function encodeURLChars(path) {
	let resolved = resolvePath(path);
	const filePathLast = path.charAt(path.length - 1);
	if (filePathLast === "/" && resolved[resolved.length - 1] !== "/") resolved += "/";
	resolved = encodePathChars(resolved);
	if (resolved.indexOf("?") !== -1) resolved = resolved.replace(questionRegex, "%3F");
	if (resolved.indexOf("#") !== -1) resolved = resolved.replace(hashRegex, "%23");
	return resolved;
}
function isUrl(url) {
	try {
		return !!new URL(url);
	} catch {
		return false;
	}
}
function asUrl(url) {
	try {
		const parsed = new URL(url);
		parsed.hash = "";
		return parsed;
	} catch {
		return null;
	}
}
var PathUtilities = class {
	static join(...paths) {
		const [firstSegment = "", ...rest] = paths.map(uriObjectToString);
		const pathAsUrl = asUrl(firstSegment);
		if (pathAsUrl) {
			pathAsUrl.pathname = joinPaths(pathAsUrl.pathname, ...rest.map(encodeURLChars));
			return pathAsUrl.toString();
		}
		return joinPaths(firstSegment, ...rest.map(encodeURLChars));
	}
	static relative(from, to) {
		const fromString = uriObjectToString(from);
		const toString = uriObjectToString(to);
		const fromPath = isUrl(fromString) ? asUrl(fromString)?.pathname ?? fromString : fromString;
		const toPath = isUrl(toString) ? asUrl(toString)?.pathname ?? toString : toString;
		return relativePaths(fromPath, toPath);
	}
	static isAbsolute(path) {
		const pathString = uriObjectToString(path);
		if (isUrl(pathString)) return true;
		return isAbsolutePath(pathString);
	}
	static normalize(path) {
		const pathString = uriObjectToString(path);
		const pathURL = asUrl(encodeURLChars(pathString));
		if (pathURL) {
			pathURL.pathname = encodeURLChars(normalizePath(decodeURIComponent(pathURL.pathname)));
			return pathURL.toString();
		}
		return normalizePath(pathString);
	}
	static dirname(path) {
		const pathString = uriObjectToString(path);
		const pathURL = asUrl(pathString);
		if (pathURL) {
			pathURL.pathname = encodeURLChars(dirnamePath(decodeURIComponent(pathURL.pathname)));
			return pathURL.toString();
		}
		return dirnamePath(pathString);
	}
	static basename(path, ext) {
		const pathString = uriObjectToString(path);
		const pathURL = asUrl(pathString);
		if (pathURL) return basenamePath(decodeURIComponent(pathURL.pathname));
		return basenamePath(pathString, ext);
	}
	static extname(path) {
		const pathString = uriObjectToString(path);
		const pathURL = asUrl(pathString);
		if (pathURL) return extnamePath(decodeURIComponent(pathURL.pathname));
		return extnamePath(pathString);
	}
	static parse(path) {
		const pathString = uriObjectToString(path);
		const pathURL = asUrl(pathString);
		if (pathURL) return parsePath(decodeURIComponent(pathURL.pathname));
		return parsePath(pathString);
	}
};

export { PathUtilities };
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