diff options
Diffstat (limited to 'iconvdata/ksc5601.h')
| -rw-r--r-- | iconvdata/ksc5601.h | 96 |
1 files changed, 65 insertions, 31 deletions
diff --git a/iconvdata/ksc5601.h b/iconvdata/ksc5601.h index 76793f9e5b..72863ef882 100644 --- a/iconvdata/ksc5601.h +++ b/iconvdata/ksc5601.h @@ -27,46 +27,62 @@ #include <gconv.h> #include <stdint.h> +/* Structure to map from UCS to KSC. This structure should be packed + on all platforms. */ +struct map +{ + uint16_t ucs; + char val[2]; +}; + /* Conversion table. */ extern const uint16_t __ksc5601_hangul_to_ucs[KSC5601_HANGUL]; extern const uint16_t __ksc5601_sym_to_ucs[]; -extern const uint16_t __ksc5601_sym_from_ucs[KSC5601_SYMBOL][2]; +extern const struct map __ksc5601_sym_from_ucs[KSC5601_SYMBOL]; extern const uint16_t __ksc5601_hanja_to_ucs[KSC5601_HANJA]; -extern const uint16_t __ksc5601_hanja_from_ucs[KSC5601_HANJA][2]; +extern const struct map __ksc5601_hanja_from_ucs[KSC5601_HANJA]; static inline uint32_t -ksc5601_to_ucs4 (uint16_t s) +ksc5601_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset) { - unsigned char ch = s / 256; + unsigned char ch = *(*s); unsigned char ch2; int idx; /* row 94(0x7e) and row 41(0x49) are user-defined area in KS C 5601 */ - if (ch <= 0x20 || ch >= 0x7e || ch == 0x49) + if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) >= 0x7e + || (ch - offset) == 0x49) return UNKNOWN_10646_CHAR; - ch2 = s % 256; - if (ch2 <= 0x20 || ch2 >= 0x7f) + if (avail < 2) + return 0; + + ch2 = (*s)[1]; + if (ch2 < offset || (ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f) return UNKNOWN_10646_CHAR; - idx = (ch - 0x21) * 94 + (ch2 - 0x21); + idx = (ch - offset - 0x21) * 94 + (ch2 - offset - 0x21); /* 1410 = 15 * 94 , 3760 = 40 * 94 Hangul in KS C 5601 : row 16 - row 40 */ + (*s) += 2; + if (idx >= 1410 && idx < 3760) - return __ksc5601_hangul_to_ucs[idx-1410]; + return (__ksc5601_hangul_to_ucs[idx - 1410] + ?: ((*s) -= 2, UNKNOWN_10646_CHAR)); else if (idx > 3854) /* Hanja : row 42 - row 93 : 3854 = 94 * (42-1) */ - return __ksc5601_hanja_to_ucs[idx-3854]; + return (__ksc5601_hanja_to_ucs[idx - 3854] + ?: ((*s) -= 2, UNKNOWN_10646_CHAR)); else - return __ksc5601_sym_to_ucs[idx] ?: UNKNOWN_10646_CHAR; + return __ksc5601_sym_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR); } static inline size_t -ucs4_to_ksc5601_hangul (uint32_t wch, uint16_t *s) +ucs4_to_ksc5601_hangul (uint32_t wch, unsigned char **s, size-t avail) { int l = 0; int m; @@ -75,23 +91,30 @@ ucs4_to_ksc5601_hangul (uint32_t wch, uint16_t *s) while (l <= u) { - try = (uint32_t) __ksc5601_hangul_to_ucs[m=(l+u)/2]; + m = (l + u) / 2; + try = (uint32_t) __ksc5601_hangul_to_ucs[m]; if (try > wch) u = m - 1; else if (try < wch) l= m + 1; else { - *s = (uint16_t) ((m / 94) * 256 + m % 94 + 0x3021) ; + if (avail < 2) + return 0; + + *(*s)++ = (m / 94) + 0x30; + *(*s)++ = (m % 94) + 0x21; + return 2; } } - return 0; + + return UNKNOWN_10646_CHAR; } static inline size_t -ucs4_to_ksc5601_hanja (uint32_t wch, uint16_t *s) +ucs4_to_ksc5601_hanja (uint32_t wch, unsigned char **s, size_t avail) { int l = 0; int m; @@ -101,22 +124,28 @@ ucs4_to_ksc5601_hanja (uint32_t wch, uint16_t *s) while (l <= u) { m = (l + u) / 2; - try = (uint32_t) __ksc5601_hanja_from_ucs[m][0]; + try = (uint32_t) __ksc5601_hanja_from_ucs[m].ucs; if (try > wch) u=m-1; else if (try < wch) l = m + 1; else { - *s = __ksc5601_hanja_from_ucs[m][1]; + if (avail < 2) + return 0; + + *(*s)++ = __ksc5601_hanja_from_ucs[m].val[0]; + *(*s)++ = __ksc5601_hanja_from_ucs[m].val[1]; + return 2; } } - return 0; + + return UNKNOWN_10646_CHAR; } static inline size_t -ucs4_to_ksc5601_sym (uint32_t wch, uint16_t *s) +ucs4_to_ksc5601_sym (uint32_t wch, unsigned char **s, size_t avail) { int l = 0; int m; @@ -126,32 +155,37 @@ ucs4_to_ksc5601_sym (uint32_t wch, uint16_t *s) while (l <= u) { m = (l + u) / 2; - try = __ksc5601_sym_from_ucs[m][0]; + try = __ksc5601_sym_from_ucs[m].ucs; if (try > wch) u = m - 1; else if (try < wch) l = m + 1; else { - *s = __ksc5601_sym_from_ucs[m][1]; + if (avail < 2) + return 0; + + *(*s)++ = __ksc5601_sym_from_ucs[m].val[0]; + *(*s)++ = __ksc5601_sym_from_ucs[m].val[1]; + return 2; } } - return 0; + + return UNKNOWN_10646_CHAR; } static inline size_t -ucs4_to_ksc5601 (uint32_t ch, uint16_t *s) +ucs4_to_ksc5601 (uint32_t wch, unsigned char **s, size_t avail) { - *s = (uint16_t) UNKNOWN_10646_CHAR; /* FIXIT */ - - if (ch >= 0xac00 && ch <= 0xd7a3) - return ucs4_to_ksc5601_hangul (ch, s); - else if (ch >= 0x4e00 && ch <= 0x9fff || ch >= 0xf900 && ch <= 0xfa0b) - return ucs4_to_ksc5601_hanja (ch, s); + if (wch >= 0xac00 && wch <= 0xd7a3) + return ucs4_to_ksc5601_hangul (wch, (uint16_t *) s); + else if ((wch >= 0x4e00 && wch <= 0x9fff) + || (wch >= 0xf900 && wch <= 0xfa0b)) + return ucs4_to_ksc5601_hanja (wch, s, avail); else - return ucs4_to_ksc5601_sym (ch, s); + return ucs4_to_ksc5601_sym (wch, s, avail); } #endif /* ksc5601.h */ |