| /* |
| * UCS-4-SWAPPED = UCS-4-INTERNAL with inverted endianness |
| */ |
| |
| static int |
| ucs4swapped_mbtowc (conv_t conv, wchar_t *pwc, const unsigned char *s, int n) |
| { |
| if (n >= 4) { |
| unsigned int x = *(unsigned int *)s; |
| x = ((x & 0xffffffff) >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | ((x << 24) & 0xffffffff); |
| *pwc = x; |
| return 4; |
| } |
| return RET_TOOFEW(0); |
| } |
| |
| static int |
| ucs4swapped_wctomb (conv_t conv, unsigned char *r, wchar_t wc, int n) |
| { |
| if (n >= 4) { |
| unsigned int x = wc; |
| x = ((x & 0xffffffff) >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | ((x << 24) & 0xffffffff); |
| *(unsigned int *)r = x; |
| return 4; |
| } else |
| return RET_TOOSMALL; |
| } |
| |
| /* |
| * UCS-4-BE = UCS-4 big endian, with machine dependent alignment |
| * UCS-4-LE = UCS-4 little endian, with machine dependent alignment |
| */ |
| |
| #ifdef WORDS_LITTLEENDIAN |
| #define ucs4be_mbtowc ucs4swapped_mbtowc |
| #define ucs4be_wctomb ucs4swapped_wctomb |
| #define ucs4le_mbtowc ucs4internal_mbtowc |
| #define ucs4le_wctomb ucs4internal_wctomb |
| #else |
| #define ucs4be_mbtowc ucs4internal_mbtowc |
| #define ucs4be_wctomb ucs4internal_wctomb |
| #define ucs4le_mbtowc ucs4swapped_mbtowc |
| #define ucs4le_wctomb ucs4swapped_wctomb |
| #endif |
