mirror of
https://github.com/swc-project/swc.git
synced 2024-12-24 22:22:34 +03:00
391 lines
12 KiB
TypeScript
391 lines
12 KiB
TypeScript
// Loaded from https://deno.land/std@0.84.0/path/glob.ts
|
||
|
||
|
||
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
|
||
// This module is browser compatible.
|
||
|
||
import { osType } from "../_util/os.ts";
|
||
import { join, normalize } from "./mod.ts";
|
||
import { SEP, SEP_PATTERN } from "./separator.ts";
|
||
|
||
export interface GlobOptions {
|
||
/** Extended glob syntax.
|
||
* See https://www.linuxjournal.com/content/bash-extended-globbing. Defaults
|
||
* to true. */
|
||
extended?: boolean;
|
||
/** Globstar syntax.
|
||
* See https://www.linuxjournal.com/content/globstar-new-bash-globbing-option.
|
||
* If false, `**` is treated like `*`. Defaults to true. */
|
||
globstar?: boolean;
|
||
/** Operating system. Defaults to the native OS. */
|
||
os?: typeof Deno.build.os;
|
||
}
|
||
|
||
export type GlobToRegExpOptions = GlobOptions;
|
||
|
||
// deno-fmt-ignore
|
||
const regExpEscapeChars = ["!", "$", "(", ")", "*", "+", ".", "=", "?", "[", "\\", "^", "{", "|"];
|
||
const rangeEscapeChars = ["-", "\\", "]"];
|
||
|
||
/** Convert a glob string to a regular expression.
|
||
*
|
||
* Tries to match bash glob expansion as closely as possible.
|
||
*
|
||
* Basic glob syntax:
|
||
* - `*` - Matches everything without leaving the path segment.
|
||
* - `{foo,bar}` - Matches `foo` or `bar`.
|
||
* - `[abcd]` - Matches `a`, `b`, `c` or `d`.
|
||
* - `[a-d]` - Matches `a`, `b`, `c` or `d`.
|
||
* - `[!abcd]` - Matches any single character besides `a`, `b`, `c` or `d`.
|
||
* - `[[:<class>:]]` - Matches any character belonging to `<class>`.
|
||
* - `[[:alnum:]]` - Matches any digit or letter.
|
||
* - `[[:digit:]abc]` - Matches any digit, `a`, `b` or `c`.
|
||
* - See https://facelessuser.github.io/wcmatch/glob/#posix-character-classes
|
||
* for a complete list of supported character classes.
|
||
* - `\` - Escapes the next character for an `os` other than `"windows"`.
|
||
* - \` - Escapes the next character for `os` set to `"windows"`.
|
||
* - `/` - Path separator.
|
||
* - `\` - Additional path separator only for `os` set to `"windows"`.
|
||
*
|
||
* Extended syntax:
|
||
* - Requires `{ extended: true }`.
|
||
* - `?(foo|bar)` - Matches 0 or 1 instance of `{foo,bar}`.
|
||
* - `@(foo|bar)` - Matches 1 instance of `{foo,bar}`. They behave the same.
|
||
* - `*(foo|bar)` - Matches _n_ instances of `{foo,bar}`.
|
||
* - `+(foo|bar)` - Matches _n > 0_ instances of `{foo,bar}`.
|
||
* - `!(foo|bar)` - Matches anything other than `{foo,bar}`.
|
||
* - See https://www.linuxjournal.com/content/bash-extended-globbing.
|
||
*
|
||
* Globstar syntax:
|
||
* - Requires `{ globstar: true }`.
|
||
* - `**` - Matches any number of any path segments.
|
||
* - Must comprise its entire path segment in the provided glob.
|
||
* - See https://www.linuxjournal.com/content/globstar-new-bash-globbing-option.
|
||
*
|
||
* Note the following properties:
|
||
* - The generated `RegExp` is anchored at both start and end.
|
||
* - Repeating and trailing separators are tolerated. Trailing separators in the
|
||
* provided glob have no meaning and are discarded.
|
||
* - Absolute globs will only match absolute paths, etc.
|
||
* - Empty globs will match nothing.
|
||
* - Any special glob syntax must be contained to one path segment. For example,
|
||
* `?(foo|bar/baz)` is invalid. The separator will take precendence and the
|
||
* first segment ends with an unclosed group.
|
||
* - If a path segment ends with unclosed groups or a dangling escape prefix, a
|
||
* parse error has occured. Every character for that segment is taken
|
||
* literally in this event.
|
||
*
|
||
* Limitations:
|
||
* - A negative group like `!(foo|bar)` will wrongly be converted to a negative
|
||
* look-ahead followed by a wildcard. This means that `!(foo).js` will wrongly
|
||
* fail to match `foobar.js`, even though `foobar` is not `foo`. Effectively,
|
||
* `!(foo|bar)` is treated like `!(@(foo|bar)*)`. This will work correctly if
|
||
* the group occurs not nested at the end of the segment. */
|
||
export function globToRegExp(
|
||
glob: string,
|
||
{ extended = true, globstar: globstarOption = true, os = osType }:
|
||
GlobToRegExpOptions = {},
|
||
): RegExp {
|
||
if (glob == "") {
|
||
return /(?!)/;
|
||
}
|
||
|
||
const sep = os == "windows" ? "(?:\\\\|/)+" : "/+";
|
||
const sepMaybe = os == "windows" ? "(?:\\\\|/)*" : "/*";
|
||
const seps = os == "windows" ? ["\\", "/"] : ["/"];
|
||
const globstar = os == "windows"
|
||
? "(?:[^\\\\/]*(?:\\\\|/|$)+)*"
|
||
: "(?:[^/]*(?:/|$)+)*";
|
||
const wildcard = os == "windows" ? "[^\\\\/]*" : "[^/]*";
|
||
const escapePrefix = os == "windows" ? "`" : "\\";
|
||
|
||
// Remove trailing separators.
|
||
let newLength = glob.length;
|
||
for (; newLength > 1 && seps.includes(glob[newLength - 1]); newLength--);
|
||
glob = glob.slice(0, newLength);
|
||
|
||
let regExpString = "";
|
||
|
||
// Terminates correctly. Trust that `j` is incremented every iteration.
|
||
for (let j = 0; j < glob.length;) {
|
||
let segment = "";
|
||
const groupStack = [];
|
||
let inRange = false;
|
||
let inEscape = false;
|
||
let endsWithSep = false;
|
||
let i = j;
|
||
|
||
// Terminates with `i` at the non-inclusive end of the current segment.
|
||
for (; i < glob.length && !seps.includes(glob[i]); i++) {
|
||
if (inEscape) {
|
||
inEscape = false;
|
||
const escapeChars = inRange ? rangeEscapeChars : regExpEscapeChars;
|
||
segment += escapeChars.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == escapePrefix) {
|
||
inEscape = true;
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "[") {
|
||
if (!inRange) {
|
||
inRange = true;
|
||
segment += "[";
|
||
if (glob[i + 1] == "!") {
|
||
i++;
|
||
segment += "^";
|
||
} else if (glob[i + 1] == "^") {
|
||
i++;
|
||
segment += "\\^";
|
||
}
|
||
continue;
|
||
} else if (glob[i + 1] == ":") {
|
||
let k = i + 1;
|
||
let value = "";
|
||
while (glob[k + 1] != null && glob[k + 1] != ":") {
|
||
value += glob[k + 1];
|
||
k++;
|
||
}
|
||
if (glob[k + 1] == ":" && glob[k + 2] == "]") {
|
||
i = k + 2;
|
||
if (value == "alnum") segment += "\\dA-Za-z";
|
||
else if (value == "alpha") segment += "A-Za-z";
|
||
else if (value == "ascii") segment += "\x00-\x7F";
|
||
else if (value == "blank") segment += "\t ";
|
||
else if (value == "cntrl") segment += "\x00-\x1F\x7F";
|
||
else if (value == "digit") segment += "\\d";
|
||
else if (value == "graph") segment += "\x21-\x7E";
|
||
else if (value == "lower") segment += "a-z";
|
||
else if (value == "print") segment += "\x20-\x7E";
|
||
else if (value == "punct") {
|
||
segment += "!\"#$%&'()*+,\\-./:;<=>?@[\\\\\\]^_‘{|}~";
|
||
} else if (value == "space") segment += "\\s\v";
|
||
else if (value == "upper") segment += "A-Z";
|
||
else if (value == "word") segment += "\\w";
|
||
else if (value == "xdigit") segment += "\\dA-Fa-f";
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (glob[i] == "]" && inRange) {
|
||
inRange = false;
|
||
segment += "]";
|
||
continue;
|
||
}
|
||
|
||
if (inRange) {
|
||
if (glob[i] == "\\") {
|
||
segment += `\\\\`;
|
||
} else {
|
||
segment += glob[i];
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (
|
||
glob[i] == ")" && groupStack.length > 0 &&
|
||
groupStack[groupStack.length - 1] != "BRACE"
|
||
) {
|
||
segment += ")";
|
||
const type = groupStack.pop()!;
|
||
if (type == "!") {
|
||
segment += wildcard;
|
||
} else if (type != "@") {
|
||
segment += type;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (
|
||
glob[i] == "|" && groupStack.length > 0 &&
|
||
groupStack[groupStack.length - 1] != "BRACE"
|
||
) {
|
||
segment += "|";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "+" && extended && glob[i + 1] == "(") {
|
||
i++;
|
||
groupStack.push("+");
|
||
segment += "(?:";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "@" && extended && glob[i + 1] == "(") {
|
||
i++;
|
||
groupStack.push("@");
|
||
segment += "(?:";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "?") {
|
||
if (extended && glob[i + 1] == "(") {
|
||
i++;
|
||
groupStack.push("?");
|
||
segment += "(?:";
|
||
} else {
|
||
segment += ".";
|
||
}
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "!" && extended && glob[i + 1] == "(") {
|
||
i++;
|
||
groupStack.push("!");
|
||
segment += "(?!";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "{") {
|
||
groupStack.push("BRACE");
|
||
segment += "(?:";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "}" && groupStack[groupStack.length - 1] == "BRACE") {
|
||
groupStack.pop();
|
||
segment += ")";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "," && groupStack[groupStack.length - 1] == "BRACE") {
|
||
segment += "|";
|
||
continue;
|
||
}
|
||
|
||
if (glob[i] == "*") {
|
||
if (extended && glob[i + 1] == "(") {
|
||
i++;
|
||
groupStack.push("*");
|
||
segment += "(?:";
|
||
} else {
|
||
const prevChar = glob[i - 1];
|
||
let numStars = 1;
|
||
while (glob[i + 1] == "*") {
|
||
i++;
|
||
numStars++;
|
||
}
|
||
const nextChar = glob[i + 1];
|
||
if (
|
||
globstarOption && numStars == 2 &&
|
||
[...seps, undefined].includes(prevChar) &&
|
||
[...seps, undefined].includes(nextChar)
|
||
) {
|
||
segment += globstar;
|
||
endsWithSep = true;
|
||
} else {
|
||
segment += wildcard;
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
|
||
segment += regExpEscapeChars.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
|
||
}
|
||
|
||
// Check for unclosed groups or a dangling backslash.
|
||
if (groupStack.length > 0 || inRange || inEscape) {
|
||
// Parse failure. Take all characters from this segment literally.
|
||
segment = "";
|
||
for (const c of glob.slice(j, i)) {
|
||
segment += regExpEscapeChars.includes(c) ? `\\${c}` : c;
|
||
endsWithSep = false;
|
||
}
|
||
}
|
||
|
||
regExpString += segment;
|
||
if (!endsWithSep) {
|
||
regExpString += i < glob.length ? sep : sepMaybe;
|
||
endsWithSep = true;
|
||
}
|
||
|
||
// Terminates with `i` at the start of the next segment.
|
||
while (seps.includes(glob[i])) i++;
|
||
|
||
// Check that the next value of `j` is indeed higher than the current value.
|
||
if (!(i > j)) {
|
||
throw new Error("Assertion failure: i > j (potential infinite loop)");
|
||
}
|
||
j = i;
|
||
}
|
||
|
||
regExpString = `^${regExpString}$`;
|
||
return new RegExp(regExpString);
|
||
}
|
||
|
||
/** Test whether the given string is a glob */
|
||
export function isGlob(str: string): boolean {
|
||
const chars: Record<string, string> = { "{": "}", "(": ")", "[": "]" };
|
||
const regex =
|
||
/\\(.)|(^!|\*|[\].+)]\?|\[[^\\\]]+\]|\{[^\\}]+\}|\(\?[:!=][^\\)]+\)|\([^|]+\|[^\\)]+\))/;
|
||
|
||
if (str === "") {
|
||
return false;
|
||
}
|
||
|
||
let match: RegExpExecArray | null;
|
||
|
||
while ((match = regex.exec(str))) {
|
||
if (match[2]) return true;
|
||
let idx = match.index + match[0].length;
|
||
|
||
// if an open bracket/brace/paren is escaped,
|
||
// set the index to the next closing character
|
||
const open = match[1];
|
||
const close = open ? chars[open] : null;
|
||
if (open && close) {
|
||
const n = str.indexOf(close, idx);
|
||
if (n !== -1) {
|
||
idx = n + 1;
|
||
}
|
||
}
|
||
|
||
str = str.slice(idx);
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/** Like normalize(), but doesn't collapse "**\/.." when `globstar` is true. */
|
||
export function normalizeGlob(
|
||
glob: string,
|
||
{ globstar = false }: GlobOptions = {},
|
||
): string {
|
||
if (glob.match(/\0/g)) {
|
||
throw new Error(`Glob contains invalid characters: "${glob}"`);
|
||
}
|
||
if (!globstar) {
|
||
return normalize(glob);
|
||
}
|
||
const s = SEP_PATTERN.source;
|
||
const badParentPattern = new RegExp(
|
||
`(?<=(${s}|^)\\*\\*${s})\\.\\.(?=${s}|$)`,
|
||
"g",
|
||
);
|
||
return normalize(glob.replace(badParentPattern, "\0")).replace(/\0/g, "..");
|
||
}
|
||
|
||
/** Like join(), but doesn't collapse "**\/.." when `globstar` is true. */
|
||
export function joinGlobs(
|
||
globs: string[],
|
||
{ extended = false, globstar = false }: GlobOptions = {},
|
||
): string {
|
||
if (!globstar || globs.length == 0) {
|
||
return join(...globs);
|
||
}
|
||
if (globs.length === 0) return ".";
|
||
let joined: string | undefined;
|
||
for (const glob of globs) {
|
||
const path = glob;
|
||
if (path.length > 0) {
|
||
if (!joined) joined = path;
|
||
else joined += `${SEP}${path}`;
|
||
}
|
||
}
|
||
if (!joined) return ".";
|
||
return normalizeGlob(joined, { extended, globstar });
|
||
}
|