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glibc/iconvdata/ksc5601.h
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/* Access functions for KS C 5601-1992 based encoding conversion. | |
Copyright (C) 1998-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifndef _KSC5601_H | |
#define _KSC5601_H 1 | |
#define KSC5601_HANGUL 2350 | |
#define KSC5601_HANJA 4888 | |
#define KSC5601_SYMBOL 989 | |
#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 struct map __ksc5601_sym_from_ucs[KSC5601_SYMBOL]; | |
extern const uint16_t __ksc5601_hanja_to_ucs[KSC5601_HANJA]; | |
extern const struct map __ksc5601_hanja_from_ucs[KSC5601_HANJA]; | |
static inline uint32_t | |
__attribute ((always_inline)) | |
ksc5601_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset) | |
{ | |
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 < offset || (ch - offset) <= 0x20 || (ch - offset) >= 0x7e | |
|| (ch - offset) == 0x49) | |
return __UNKNOWN_10646_CHAR; | |
if (avail < 2) | |
return 0; | |
ch2 = (*s)[1]; | |
if (ch2 < offset || (ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f) | |
return __UNKNOWN_10646_CHAR; | |
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 < 1410 + KSC5601_HANGUL) | |
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] | |
?: (*s -= 2, __UNKNOWN_10646_CHAR)); | |
else if (idx <= 1114) | |
return __ksc5601_sym_to_ucs[idx] ?: (*s -= 2, __UNKNOWN_10646_CHAR); | |
*s -= 2; | |
return __UNKNOWN_10646_CHAR; | |
} | |
static inline size_t | |
__attribute ((always_inline)) | |
ucs4_to_ksc5601_hangul (uint32_t wch, unsigned char *s, size_t avail) | |
{ | |
int l = 0; | |
int u = KSC5601_HANGUL - 1; | |
uint32_t try; | |
while (l <= u) | |
{ | |
int 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 | |
{ | |
if (avail < 2) | |
return 0; | |
s[0] = (m / 94) + 0x30; | |
s[1] = (m % 94) + 0x21; | |
return 2; | |
} | |
} | |
return __UNKNOWN_10646_CHAR; | |
} | |
static inline size_t | |
__attribute ((always_inline)) | |
ucs4_to_ksc5601_hanja (uint32_t wch, unsigned char *s, size_t avail) | |
{ | |
int l = 0; | |
int u = KSC5601_HANJA - 1; | |
uint32_t try; | |
while (l <= u) | |
{ | |
int m = (l + u) / 2; | |
try = (uint32_t) __ksc5601_hanja_from_ucs[m].ucs; | |
if (try > wch) | |
u=m-1; | |
else if (try < wch) | |
l = m + 1; | |
else | |
{ | |
if (avail < 2) | |
return 0; | |
s[0] = __ksc5601_hanja_from_ucs[m].val[0]; | |
s[1] = __ksc5601_hanja_from_ucs[m].val[1]; | |
return 2; | |
} | |
} | |
return __UNKNOWN_10646_CHAR; | |
} | |
static inline size_t | |
__attribute ((always_inline)) | |
ucs4_to_ksc5601_sym (uint32_t wch, unsigned char *s, size_t avail) | |
{ | |
int l = 0; | |
int u = KSC5601_SYMBOL - 1; | |
uint32_t try; | |
while (l <= u) | |
{ | |
int m = (l + u) / 2; | |
try = __ksc5601_sym_from_ucs[m].ucs; | |
if (try > wch) | |
u = m - 1; | |
else if (try < wch) | |
l = m + 1; | |
else | |
{ | |
if (avail < 2) | |
return 0; | |
s[0] = __ksc5601_sym_from_ucs[m].val[0]; | |
s[1] = __ksc5601_sym_from_ucs[m].val[1]; | |
return 2; | |
} | |
} | |
return __UNKNOWN_10646_CHAR; | |
} | |
static inline size_t | |
__attribute ((always_inline)) | |
ucs4_to_ksc5601 (uint32_t wch, unsigned char *s, size_t avail) | |
{ | |
if (wch >= 0xac00 && wch <= 0xd7a3) | |
return ucs4_to_ksc5601_hangul (wch, s, avail); | |
else if ((wch >= 0x4e00 && wch <= 0x9fff) | |
|| (wch >= 0xf900 && wch <= 0xfa0b)) | |
return ucs4_to_ksc5601_hanja (wch, s, avail); | |
else | |
return ucs4_to_ksc5601_sym (wch, s, avail); | |
} | |
#endif /* ksc5601.h */ |