const FAKE_CURSOR_PATTERN = String.raw`\x1b\[7m([^\x1b]*)\x1b\[(?:0|27)m`;
const INVERSE_VIDEO = new RegExp(FAKE_CURSOR_PATTERN, "g");
const FAKE_CURSOR = new RegExp(FAKE_CURSOR_PATTERN);

export function hasFakeCursor(lines: readonly string[]): boolean {
	return lines.some((line) => FAKE_CURSOR.test(line));
}

export function hideFakeCursor(line: string): string {
	return line.replace(INVERSE_VIDEO, "$1");
}

export function replaceFakeCursor(line: string, replacement: string): string {
	return line.replace(INVERSE_VIDEO, replacement);
}