In a string descriptor, the first 2 bytes specify the maximum length for the string. This maximum length is always held in native format.
The third byte contains various flags (to indicate, for example, if the string length in a VARYING string is held in littleendian or bigendian format or if the data in a WIDECHAR string is held in littleendian or bigendian format).
In a string descriptor for a nonvarying bit string, the fourth byte gives the bit offset.
In a string descriptor for a CHARACTER string, the fourth byte encodes the compiler CODEPAGE option.
The declare for a string descriptor is:
declare
1 dso_string based( null() ),
2 dso_string_length fixed bin(15),
2 dso_string_flags,
3 dso_string_is_varying bit(1),
3 dso_string_is_varyingz bit(1),
3 dso_string_has_nonnative_len bit(1), /* for varying */
3 dso_string_is_ascii bit(1), /* for char */
3 dso_string_has_nonnative_data bit(1), /* for wchar */
3 * bit(1), /* reserved, '0'b */
3 * bit(1), /* reserved, '0'b */
3 * bit(1), /* reserved, '0'b */
2 * union,
3 dso_String_Codepage ordinal ccs_Codepage_Enum,
3 dso_string_bitofs fixed bin(8) unsigned,
2 dso_string_end char(0);
The possible values for the codepage encoding are defined via:
define ordinal
ccs_Codepage_Enum
( ccs_Codepage_01047 value(1)
,ccs_Codepage_01140
,ccs_Codepage_01141
,ccs_Codepage_01142
,ccs_Codepage_01143
,ccs_Codepage_01144
,ccs_Codepage_01145
,ccs_Codepage_01146
,ccs_Codepage_01147
,ccs_Codepage_01148
,ccs_Codepage_01149
,ccs_Codepage_00819
,ccs_Codepage_00813
,ccs_Codepage_00920
,ccs_Codepage_00037
,ccs_Codepage_00273
,ccs_Codepage_00277
,ccs_Codepage_00278
,ccs_Codepage_00280
,ccs_Codepage_00284
,ccs_Codepage_00285
,ccs_Codepage_00297
,ccs_Codepage_00500
,ccs_Codepage_00871
,ccs_Codepage_01026
,ccs_Codepage_01155
) unsigned prec(8);