/**
* Shared glob-to-regex conversion utility
* Replaces 3 duplicate implementations in query.ts, signature.ts, and files.ts
*/
/**
* Convert a glob pattern to a regular expression
* Supports: *, **, ? and handles path separators correctly
*
* - `**\/` matches any path prefix (zero or more directories)
* - `\/**` matches any path suffix
* - `**` standalone matches anything
* - `*` matches any characters except /
* - `?` matches any single character except /
*/
export function globToRegex(pattern: string): RegExp {
// Normalize to forward slashes
pattern = pattern.replace(/\\/g, '/');
// Escape regex special chars except * and ?
let regex = pattern.replace(/[.+^${}()|[\]\\]/g, '\\$&');
// Convert glob patterns to regex using placeholders to avoid double-replacement
regex = regex
.replace(/\*\*\//g, '\x00STARSTARSLASH\x00') // **/ placeholder
.replace(/\/\*\*/g, '\x00SLASHSTARSTAR\x00') // /** placeholder
.replace(/\*\*/g, '\x00STARSTAR\x00') // standalone ** placeholder
.replace(/\*/g, '[^/]*') // * matches anything except /
.replace(/\?/g, '[^/]') // ? matches single char except /
.replace(/\x00STARSTARSLASH\x00/g, '(.*/)?') // **/ = optional prefix ending with /
.replace(/\x00SLASHSTARSTAR\x00/g, '(/.*)?') // /** = optional suffix starting with /
.replace(/\x00STARSTAR\x00/g, '.*'); // ** matches anything
return new RegExp(`^${regex}$`, 'i');
}
