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import { globrex } from "./globrex.ts";
export interface GlobOptions {
// Allow ExtGlob features
extended?: boolean;
// When globstar is true, '/foo/**' is equivelant
// to '/foo/*' when globstar is false.
// Having globstar set to true is the same usage as
// using wildcards in bash
globstar?: boolean;
// be laissez faire about mutiple slashes
strict?: boolean;
// Parse as filepath for extra path related features
filepath?: boolean;
// Flag to use in the generated RegExp
flags?: string;
}
/**
* Generate a regex based on glob pattern and options
* This was meant to be using the the `fs.walk` function
* but can be used anywhere else.
* Examples:
*
* Looking for all the `ts` files:
* walkSync(".", {
* match: [glob("*.ts")]
* })
*
* Looking for all the `.json` files in any subfolder:
* walkSync(".", {
* match: [glob(join("a", "**", "*.json"),{
* flags: "g",
* extended: true,
* globstar: true
* })]
* })
*
* @param glob - Glob pattern to be used
* @param options - Specific options for the glob pattern
* @returns A RegExp for the glob pattern
*/
export function glob(glob: string, options: GlobOptions = {}): RegExp {
return globrex(glob, options).regex;
}
/** Test whether the given string is a glob */
export function isGlob(str: string): boolean {
const chars: Record<string, string> = { "{": "}", "(": ")", "[": "]" };
/* eslint-disable-next-line max-len */
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;
}
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