Looks up the Unicode script for iso15924. ISO 15924 assigns four-letter codes to scripts. For example, the code for Arabic is 'Arab'. This function accepts four letter codes encoded as a guint32 in a big-endian fashion. That is, the code expected for Arabic is 0x41726162 (0x41 is ASCII code for 'A', 0x72 is ASCII code for 'r', etc).
Looks up the ISO 15924 code for script. ISO 15924 assigns four-letter codes to scripts. For example, the code for Arabic is 'Arab'. The four letter codes are encoded as a guint32 by this function in a big-endian fashion. That is, the code returned for Arabic is 0x41726162 (0x41 is ASCII code for 'A', 0x72 is ASCII code for 'r', etc).
Namespace for UnicodeScript enum