// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
/**
 * Test whether the given string is a glob.
 *
 * @example Usage
 * ```ts
 * import { isGlob } from "@std/path/is-glob";
 * import { assert } from "@std/assert";
 *
 * assert(!isGlob("foo/bar/../baz"));
 * assert(isGlob("foo/*ar/../baz"));
 * ```
 *
 * @param str String to test.
 * @returns `true` if the given string is a glob, otherwise `false`
 */
export function isGlob(str) {
    const chars = { "{": "}", "(": ")", "[": "]" };
    const regex = /\\(.)|(^!|\*|\?|[\].+)]\?|\[[^\\\]]+\]|\{[^\\}]+\}|\(\?[:!=][^\\)]+\)|\([^|]+\|[^\\)]+\))/;
    if (str === "") {
        return false;
    }
    let match;
    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;
}
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