AnyPS5/docs/dev/debt/libSceCesCs.md

libSceCesCs technical debt

Silent stubs

• sceCesMbcsUcsContextInit (libSceCesCs) stores the profile pointer in the first 8 bytes of the caller's context; the console's context layout is not known. It returns the invalid-parameter error for a null context. The signature int sceCesMbcsUcsContextInit(union* context, const union* mbcsUcsPrf) follows the Orbital IDA type database. sceCesRefersUcsProfileCp1251 returns a profile accepted by sceCesSbcToUtf8 and sceCesUtf8ToSbc only, with the Windows-1251 table of Microsoft's bestfit1251.txt, where byte 0x98 (unassigned) maps to U+0098 like the unassigned Cp1252 bytes; the console behavior for that byte is not verified
• EUC-JP (CP51932) conversions (libSceCesCs): sceCesUcsProfileInitEucJpCp51932 marks the caller's sheet with an 8-byte tag and returns it as the profile. sceCesUtf8StrToMbcsStr, sceCesUcs2StrToMbcsStr, sceCesMbcsStrToUtf8Str, sceCesMbcsStrToUcs2Str, their Get*Len forms and sceCesEucJpToUcs2 convert ASCII, the JIS X 0201 half-width katakana (0x8E + 0xA1-0xDF, U+FF61-U+FF9F) and the two-byte rows 0xA1-0xFE for that profile, and every character for the CP1252 and CP1251 profiles. The two-byte table (JisX0208.hpp, 7336 of 8836 cells) is Microsoft code page 932 read through the standard JIS row/cell to Shift-JIS arithmetic, so it includes NEC row 13 and the NEC-selected IBM rows 89-92 and maps the Microsoft variants (U+FF5E at 0xA1C1, U+2225, U+FF0D, U+FFE0-U+FFE2) instead of JIS X 0208's; that the console's CP51932 table equals it is assumed from the Microsoft code page, not measured. A character with several cells encodes to the lowest cell. A well-formed but unassigned cell answers UNASSIGNED_CODE, a trail byte outside 0xA1-0xFE INVALID_ENCODE, a cut pair SRC_BUFFER_END; the console's errors for these are not known. Three-byte JIS X 0212 (0x8F) characters throw: their table is not present. Signatures follow orbital. The string forms stop at the source limit or at a zero code unit, which is neither converted nor counted, and write no terminator; *Len outputs count code units consumed and produced. A code point outside the BMP answers UNASSIGNED_CODE. Unverified on hardware.
• sceCesUcsProfileInitSJis1997Cp932 (libSceCesCs) - returns the sheet argument without writing profile tables to it, and returns null for a null pointer; Shift-JIS conversion tables are unimplemented. The signature union* sceCesUcsProfileInitSJis1997Cp932(SceCesUcsProfileSheet* sheet) follows the Orbital IDA type database

Unknown function info

• sceCesRefersUcsProfileCp1250 (libSceCesCs) - declared without parameters and returning a pointer, following sceCesRefersUcsProfileCp1251; the signature and behavior are unverified. PPSA34501 fails to start without this export (qYu6y1E0Qbg).