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const _DRIVE_LETTER_START_RE = /^[A-Za-z]:\//;
function normalizeWindowsPath(input = "") {
if (!input) {
return input;
}
return input.replace(/\\/g, "/").replace(_DRIVE_LETTER_START_RE, (r) => r.toUpperCase());
}
const _UNC_REGEX = /^[/\\]{2}/;
const _IS_ABSOLUTE_RE = /^[/\\](?![/\\])|^[/\\]{2}(?!\.)|^[A-Za-z]:[/\\]/;
const _DRIVE_LETTER_RE = /^[A-Za-z]:$/;
const normalize = function(path) {
if (path.length === 0) {
return ".";
}
path = normalizeWindowsPath(path);
const isUNCPath = path.match(_UNC_REGEX);
const isPathAbsolute = isAbsolute(path);
const trailingSeparator = path[path.length - 1] === "/";
path = normalizeString(path, !isPathAbsolute);
if (path.length === 0) {
if (isPathAbsolute) {
return "/";
}
return trailingSeparator ? "./" : ".";
}
if (trailingSeparator) {
path += "/";
}
if (_DRIVE_LETTER_RE.test(path)) {
path += "/";
}
if (isUNCPath) {
if (!isPathAbsolute) {
return `//./${path}`;
}
return `//${path}`;
}
return isPathAbsolute && !isAbsolute(path) ? `/${path}` : path;
};
const join = function(...segments) {
let path = "";
for (const seg of segments) {
if (!seg) {
continue;
}
if (path.length > 0) {
const pathTrailing = path[path.length - 1] === "/";
const segLeading = seg[0] === "/";
const both = pathTrailing && segLeading;
if (both) {
path += seg.slice(1);
} else {
path += pathTrailing || segLeading ? seg : `/${seg}`;
}
} else {
path += seg;
}
}
return normalize(path);
};
function cwd() {
if (typeof process !== "undefined" && typeof process.cwd === "function") {
return process.cwd().replace(/\\/g, "/");
}
return "/";
}
const resolve = function(...arguments_) {
arguments_ = arguments_.map((argument) => normalizeWindowsPath(argument));
let resolvedPath = "";
let resolvedAbsolute = false;
for (let index = arguments_.length - 1; index >= -1 && !resolvedAbsolute; index--) {
const path = index >= 0 ? arguments_[index] : cwd();
if (!path || path.length === 0) {
continue;
}
resolvedPath = `${path}/${resolvedPath}`;
resolvedAbsolute = isAbsolute(path);
}
resolvedPath = normalizeString(resolvedPath, !resolvedAbsolute);
if (resolvedAbsolute && !isAbsolute(resolvedPath)) {
return `/${resolvedPath}`;
}
return resolvedPath.length > 0 ? resolvedPath : ".";
};
function normalizeString(path, allowAboveRoot) {
let res = "";
let lastSegmentLength = 0;
let lastSlash = -1;
let dots = 0;
let char = null;
for (let index = 0; index <= path.length; ++index) {
if (index < path.length) {
char = path[index];
} else if (char === "/") {
break;
} else {
char = "/";
}
if (char === "/") {
if (lastSlash === index - 1 || dots === 1) ; else if (dots === 2) {
if (res.length < 2 || lastSegmentLength !== 2 || res[res.length - 1] !== "." || res[res.length - 2] !== ".") {
if (res.length > 2) {
const lastSlashIndex = res.lastIndexOf("/");
if (lastSlashIndex === -1) {
res = "";
lastSegmentLength = 0;
} else {
res = res.slice(0, lastSlashIndex);
lastSegmentLength = res.length - 1 - res.lastIndexOf("/");
}
lastSlash = index;
dots = 0;
continue;
} else if (res.length > 0) {
res = "";
lastSegmentLength = 0;
lastSlash = index;
dots = 0;
continue;
}
}
if (allowAboveRoot) {
res += res.length > 0 ? "/.." : "..";
lastSegmentLength = 2;
}
} else {
if (res.length > 0) {
res += `/${path.slice(lastSlash + 1, index)}`;
} else {
res = path.slice(lastSlash + 1, index);
}
lastSegmentLength = index - lastSlash - 1;
}
lastSlash = index;
dots = 0;
} else if (char === "." && dots !== -1) {
++dots;
} else {
dots = -1;
}
}
return res;
}
const isAbsolute = function(p) {
return _IS_ABSOLUTE_RE.test(p);
};
const dirname = function(p) {
const segments = normalizeWindowsPath(p).replace(/\/$/, "").split("/").slice(0, -1);
if (segments.length === 1 && _DRIVE_LETTER_RE.test(segments[0])) {
segments[0] += "/";
}
return segments.join("/") || (isAbsolute(p) ? "/" : ".");
};
export { dirname as d, join as j, resolve as r };
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