/// Splits PEM material into its two parts. A Gemini identity commonly travels
/// as one .pem holding both the certificate and its private key, or as two
/// files; both cases come out of these two lookups.
library;

final _certificate = RegExp(
    r'-----BEGIN CERTIFICATE-----[\s\S]*?-----END CERTIFICATE-----');

final _privateKey = RegExp(
    r'-----BEGIN (?:RSA |EC )?PRIVATE KEY-----[\s\S]*?-----END (?:RSA |EC )?PRIVATE KEY-----');

/// The first certificate in [pem], or null when there is none.
String? certificateOf(String pem) => _certificate.firstMatch(pem)?.group(0);

/// The first private key in [pem], or null when there is none.
String? privateKeyOf(String pem) => _privateKey.firstMatch(pem)?.group(0);