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).
the ISO 15924 code for script, encoded as an integer,
of zero if script is G_UNICODE_SCRIPT_INVALID_CODE or
ISO 15924 code 'Zzzz' (script code for UNKNOWN) if script is not understood.
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).
See Codes for the representation of names of scripts
for details.