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/*
unicode-jp.c -- JIS X 0208 <=> UCS-2 converter
written by N. Tsuchimura
*/
#include <ptexenc/c-auto.h>
#include <ptexenc/unicode-jp.h>
#include <ptexenc/kanjicnv.h>
#if defined(KANJI_ICONV) && defined(HAVE_ICONV_H)
#include <iconv.h>
#include <stdlib.h> /* for atexit() */
#define ICONV_INVALID ((iconv_t)(-1))
#define ICONV_JIS "ISO-2022-JP"
#define ICONV_UNI "UCS-2BE"
static int inited = FALSE;
static iconv_t i_jis2ucs2 = ICONV_INVALID;
static iconv_t i_ucs22jis = ICONV_INVALID;
#ifdef HAVE_ATEXIT
static void close_iconv(void)
#else /* HAVE_ATEXIT */
static void close_iconv(int dummy1, void *dummy2)
#endif /* HAVE_ATEXIT */
{
if (i_jis2ucs2 != ICONV_INVALID) iconv_close(i_jis2ucs2);
if (i_ucs22jis != ICONV_INVALID) iconv_close(i_ucs22jis);
}
static void open_iconv(void)
{
inited = true;
i_jis2ucs2 = iconv_open(ICONV_UNI, ICONV_JIS);
i_ucs22jis = iconv_open(ICONV_JIS, ICONV_UNI);
#ifdef HAVE_ATEXIT
atexit(close_iconv);
#endif /* HAVE_ATEXIT */
#ifdef HAVE_ON_EXIT
on_exit(close_iconv, NULL);
#endif /* HAVE_ON_EXIT */
}
/* convert a JIS X 0208 char to UCS-2 */
static int JIStoUCS2native(int jis)
{
unsigned char jis_seq[8] = {
0x1b, 0x24, 0x42, /* JIS X 0208-1983 */
(unsigned char)HI(jis), (unsigned char)LO(jis),
0x1b, 0x28, 0x42, /* ASCII */
};
unsigned char unicode[2];
size_t from = sizeof jis_seq;
size_t to = sizeof unicode;
char *from_ptr = (char *)jis_seq;
char *to_ptr = (char *)unicode;
if (!inited) open_iconv();
if (i_jis2ucs2 == ICONV_INVALID) return 0;
if (iconv(i_jis2ucs2, &from_ptr, &from, &to_ptr, &to) == (size_t)(-1)) {
return 0;
}
return HILO(unicode[0], unicode[1]);
}
/* convert a UCS-2 char to JIS X 0208 */
static int UCS2toJISnative(int ucs2)
{
unsigned char unicode[2] = {
(unsigned char)HI(ucs2), (unsigned char)LO(ucs2),
};
unsigned char jis_seq[10] = { 0,0,0,0,0,0,0,0,0,0 };
size_t from = sizeof unicode;
size_t to = sizeof jis_seq;
char *from_ptr = (char *)unicode;
char *to_ptr = (char *)jis_seq;
unsigned char *ret = jis_seq;
if (!inited) open_iconv();
if (i_ucs22jis == ICONV_INVALID) return 0;
if (iconv(i_ucs22jis, &from_ptr, &from, &to_ptr, &to) == (size_t)(-1)) {
return 0;
}
if (ret[0] == 0x1b) ret += 3;
return HILO(ret[0], ret[1]);
}
#else /* KANJI_ICONV && HAVE_ICONV_H */
#include "jisx0208.h"
#define MAXJIS 84
/* convert a JIS X 0208 char to UCS-2 */
static int JIStoUCS2native(int jis)
{
int hi, low;
if (jis == 0x2121) return 0x3000; /* UnicodeTbl[0][0] bug fix */
hi = HI(jis) - 0x21;
low = LO(jis) - 0x21;
if (0 <= hi && hi < MAXJIS &&
0 <= low && low < 94) return (int)UnicodeTbl[hi][low];
return 0;
}
/* convert a UCS-2 char to JIS X 0208 */
static int UCS2toJISnative(int ucs2)
{
int i, j;
if (ucs2 == 0x3000) return 0x2121; /* UnicodeTbl[0][0] bug fix */
for (i=0; i<MAXJIS; i++) {
for (j=0; j<94; j++) {
if (UnicodeTbl[i][j] == ucs2) {
return HILO(i, j) + 0x2121;
}
}
}
return 0;
}
#endif /* KANJI_ICONV && HAVE_ICONV_H */
/*
http://euc.jp/i18n/ucsnote.ja.html
http://hp.vector.co.jp/authors/VA010341/unicode/
http://www.jca.apc.org/~earthian/aozora/0213/jisx0213code.zip
*/
static unsigned short int variation[] = {
/* JIS X 0208, UCS-2(1), UCS-2(2), ..., 0(sentinel) */
0x2126 /* 1-6 */, 0x2022, 0x2219, 0x22C5, 0x30FB, 0,
0x2131 /* 1-17 */, 0x203E, 0xFFE3, 0,
0x213D /* 1-29 */, 0x2012, 0x2013, 0x2014, 0x2015, 0,
0x2141 /* 1-33 */, 0x223C, 0x223E, 0x301C, 0xFF5E, 0,
0x2142 /* 1-34 */, 0x2016, 0x2225, 0,
0x2143 /* 1-35 */, 0x2223, 0xFF5C, 0,
0x2144 /* 1-36 */, 0x2026, 0x22EF, 0,
0x215D /* 1-61 */, 0x2212, 0xFF0D, 0,
0x216f /* 1-79 */, 0x00A5, 0xFFE5, 0,
0x2171 /* 1-81 */, 0x00A2, 0xFFE0, 0,
0x2172 /* 1-82 */, 0x00A3, 0xFFE1, 0,
0x224C /* 2-44 */, 0x00AC, 0xFFE2, 0,
0x227E /* 2-94 */, 0x20DD, 0x25EF, 0,
0 /* end */
};
/*
voiced sound of kana
http://developer.apple.com/technotes/tn/tn1150table.html
*/
static unsigned short int voiced_sounds[] = {
/* from, to */
0x3046, 0x3094,
0x304B, 0x304C,
0x304D, 0x304E,
0x304F, 0x3050,
0x3051, 0x3052,
0x3053, 0x3054,
0x3055, 0x3056,
0x3057, 0x3058,
0x3059, 0x305A,
0x305B, 0x305C,
0x305D, 0x305E,
0x305F, 0x3060,
0x3061, 0x3062,
0x3064, 0x3065,
0x3066, 0x3067,
0x3068, 0x3069,
0x306F, 0x3070,
0x3072, 0x3073,
0x3075, 0x3076,
0x3078, 0x3079,
0x307B, 0x307C,
0x309D, 0x309E,
0x30A6, 0x30F4,
0x30AB, 0x30AC,
0x30AD, 0x30AE,
0x30AF, 0x30B0,
0x30B1, 0x30B2,
0x30B3, 0x30B4,
0x30B5, 0x30B6,
0x30B7, 0x30B8,
0x30B9, 0x30BA,
0x30BB, 0x30BC,
0x30BD, 0x30BE,
0x30BF, 0x30C0,
0x30C1, 0x30C2,
0x30C4, 0x30C5,
0x30C6, 0x30C7,
0x30C8, 0x30C9,
0x30CF, 0x30D0,
0x30D2, 0x30D3,
0x30D5, 0x30D6,
0x30D8, 0x30D9,
0x30DB, 0x30DC,
0x30EF, 0x30F7,
0x30F0, 0x30F8,
0x30F1, 0x30F9,
0x30F2, 0x30FA,
0x30FD, 0x30FE,
0 /* end mark */
};
/* semi voiced sound of kana */
static unsigned short int semi_voiced_sounds[] = {
/* from, to */
0x306F, 0x3071,
0x3072, 0x3074,
0x3075, 0x3077,
0x3078, 0x307A,
0x307B, 0x307D,
0x30CF, 0x30D1,
0x30D2, 0x30D4,
0x30D5, 0x30D7,
0x30D8, 0x30DA,
0x30DB, 0x30DD,
0 /* end mark */
};
/* convert a JIS X 0208 char to UCS-2 */
int JIStoUCS2(int jis)
{
return JIStoUCS2native(jis);
}
/* convert a UCS-2 char to JIS X 0208 */
int UCS2toJIS(int ucs2)
{
int i, j;
/* first: variation table */
for (i=0; variation[i]!=0; i=j+1) {
for (j=i+1; variation[j]!=0; j++) {
if (variation[j] == ucs2) return variation[i];
}
}
/* second: UnicodeTbl[][] */
return UCS2toJISnative(ucs2);
}
/* for U+3099 or U+309A */
int get_voiced_sound(int ucs2, boolean semi)
{
int i;
unsigned short int *table;
if (semi) table = semi_voiced_sounds;
else table = voiced_sounds;
for (i=0; table[i]!=0; i+=2) {
if (ucs2 == table[i]) return table[i+1];
}
return 0;
}
#ifdef TEST
#include <stdio.h>
int main(int argc, char **argv) {
int hi, low;
for (hi=0; hi<MAXJIS; hi++) {
for (low=0; low<94; low++) {
int jis = HILO(hi, low) + 0x2121;
int uni = JIStoUCS2(jis);
int jis2 = UCS2toJIS(uni);
if (uni != 0 && jis != jis2) {
printf("0x%x(%c%c) uni=0x%04x, jis2=0x%04x\n",
jis, HI(jis)|0x80, LO(jis)|0x80, uni, jis2);
}
}
}
return 0;
}
#endif /* TEST */
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