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w3m/libwc/wtf.c
Rene Kita 6d1a8d44e2 Cast away a warning 
strlen() takes a char *, but p is a unsigned char *.
2022-04-18 11:42:05 +02:00

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#include "wc.h"
#include "wtf.h"
#include "sjis.h"
#include "big5.h"
#include "hkscs.h"
#include "johab.h"
#include "jis.h"
#include "viet.h"
#include "gbk.h"
#include "gb18030.h"
#include "uhc.h"
#ifdef USE_UNICODE
#include "ucs.h"
#include "utf8.h"
#endif
wc_uint8 WTF_WIDTH_MAP[ 0x100 ] = {
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,2,1,2,1,1,1,2, 1,2,1,2,1,1,1,1, 0,0,0,0,0,0,0,0, 0,0,0,0,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
};
wc_uint8 WTF_LEN_MAP[ 0x100 ] = {
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
3,4,3,4,3,3,3,4, 4,4,6,6,1,1,1,1, 3,4,3,4,3,3,3,4, 4,4,6,6,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
};
wc_uint8 WTF_TYPE_MAP[ 0x100 ] = {
1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,1,
2, 0xA,2, 0xA, 2, 0x12,2, 0xA, 2, 0xA,2, 0xA, 0x20,0x20,0x20,0x20,
4, 0xC,4, 0xC, 4, 0x20,4, 0xC, 4, 0xC,4, 0xC, 0x20,0x20,0x20,0x20,
0x20,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
};
static wc_uint16 CCS_MAP[ 33 ] = {
WC_CCS_A_CS94 >> 8, WC_CCS_A_CS94W >> 8,
WC_CCS_A_CS96 >> 8, WC_CCS_A_CS96W >> 8,
WC_CCS_A_CS942 >> 8, WC_CCS_A_UNKNOWN >> 8,
WC_CCS_A_PCS >> 8, WC_CCS_A_PCSW >> 8,
WC_CCS_A_WCS16 >> 8, WC_CCS_A_WCS16W >> 8,
WC_CCS_A_WCS32 >> 8, WC_CCS_A_WCS32W >> 8,
0, 0,
0, 0,
WC_CCS_A_CS94_C >> 8, WC_CCS_A_CS94W_C >> 8,
WC_CCS_A_CS96_C >> 8, WC_CCS_A_CS96W_C >> 8,
WC_CCS_A_CS942_C >> 8, 0,
WC_CCS_A_PCS_C >> 8, WC_CCS_A_PCSW_C >> 8,
WC_CCS_A_WCS16_C >> 8, WC_CCS_A_WCS16W_C >> 8,
WC_CCS_A_WCS32_C >> 8, WC_CCS_A_WCS32W_C >> 8,
0, 0,
0, 0,
0,
};
wc_ccs wtf_gr_ccs = 0;
static wc_ces wtf_major_ces = WC_CES_US_ASCII;
static wc_status wtf_major_st;
void
wtf_init(wc_ces ces1, wc_ces ces2)
{
int i;
wc_gset *gset;
if (wc_check_ces(ces2))
wtf_major_ces = ces2;
if (! wc_check_ces(ces1))
return;
gset = WcCesInfo[WC_CES_INDEX(ces1)].gset;
if (gset == NULL || gset[1].ccs == 0 ||
gset[1].ccs & (WC_CCS_A_WCS16|WC_CCS_A_WCS32))
return;
wtf_gr_ccs = gset[1].ccs;
if (WC_CCS_IS_WIDE(wtf_gr_ccs)) {
for (i = 0xa1; i <= 0xff; i++) {
WTF_WIDTH_MAP[i] = 2;
WTF_LEN_MAP[i] = 2;
WTF_TYPE_MAP[i] = WTF_TYPE_WCHAR1W;
}
} else {
for (i = 0xa1; i <= 0xff; i++) {
WTF_WIDTH_MAP[i] = 1;
WTF_LEN_MAP[i] = 1;
WTF_TYPE_MAP[i] = WTF_TYPE_WCHAR1;
}
}
}
/*
int
wtf_width(wc_uchar *p)
{
return (int)WTF_WIDTH_MAP[*p];
}
*/
int
wtf_strwidth(wc_uchar *p)
{
int w = 0;
wc_uchar *q = p + strlen((char *)p);
while (p < q) {
w += wtf_width(p);
p += WTF_LEN_MAP[*p];
}
return w;
}
size_t
wtf_len1(wc_uchar *p)
{
size_t len, len_max = WTF_LEN_MAP[*p];
for (len = 0; *(p + len); len++)
if (len == len_max)
break;
if (len == 0)
len = 1;
return len;
}
size_t
wtf_len(wc_uchar *p)
{
wc_uchar *q = p;
wc_uchar *strz = p + strlen((char *)p);
q += WTF_LEN_MAP[*q];
while (q < strz && ! WTF_WIDTH_MAP[*q])
q += WTF_LEN_MAP[*q];
return q - p;
}
/*
int
wtf_type(wc_uchar *p)
{
return (int)WTF_TYPE_MAP[*p];
}
*/
#define wcs16_to_wtf(c, p) \
((p)[0] = (((c) >> 14) & 0x03) | 0x80), \
((p)[1] = (((c) >> 7) & 0x7f) | 0x80), \
((p)[2] = ( (c) & 0x7f) | 0x80)
#define wcs32_to_wtf(c, p) \
((p)[0] = (((c) >> 28) & 0x0f) | 0x80), \
((p)[1] = (((c) >> 21) & 0x7f) | 0x80), \
((p)[2] = (((c) >> 14) & 0x7f) | 0x80), \
((p)[3] = (((c) >> 7) & 0x7f) | 0x80), \
((p)[4] = ( (c) & 0x7f) | 0x80)
#define wtf_to_wcs16(p) \
((p)[0] == 0 || (p)[1] == 0 || (p)[2] == 0 ? 0 : \
((wc_uint32)((p)[0] & 0x03) << 14) \
| ((wc_uint32)((p)[1] & 0x7f) << 7) \
| ((wc_uint32)((p)[2] & 0x7f) ))
#define wtf_to_wcs32(p) \
((p)[0] == 0 || (p)[1] == 0 || (p)[2] == 0 || (p)[3] == 0 || (p)[4] == 0 ? 0 : \
((wc_uint32)((p)[0] & 0x0f) << 28) \
| ((wc_uint32)((p)[1] & 0x7f) << 21) \
| ((wc_uint32)((p)[2] & 0x7f) << 14) \
| ((wc_uint32)((p)[3] & 0x7f) << 7) \
| ((wc_uint32)((p)[4] & 0x7f) ))
void
wtf_push(Str os, wc_ccs ccs, wc_uint32 code)
{
wc_uchar s[8];
wc_wchar_t cc, cc2;
size_t n;
if (ccs == WC_CCS_US_ASCII) {
Strcat_char(os, (char)(code & 0x7f));
return;
}
cc.ccs = ccs;
cc.code = code;
if (WcOption.pre_conv && !(cc.ccs & WC_CCS_A_UNKNOWN)) {
if ((ccs == WC_CCS_JOHAB || ccs == WC_CCS_JOHAB_1 ||
ccs == WC_CCS_JOHAB_2 || ccs == WC_CCS_JOHAB_3) &&
(wtf_major_ces == WC_CES_EUC_KR ||
wtf_major_ces == WC_CES_ISO_2022_KR)) {
cc2 = wc_johab_to_ksx1001(cc);
if (!WC_CCS_IS_UNKNOWN(cc2.ccs))
cc = cc2;
} else if (ccs == WC_CCS_KS_X_1001 &&
wtf_major_ces == WC_CES_JOHAB) {
cc2 = wc_ksx1001_to_johab(cc);
if (!WC_CCS_IS_UNKNOWN(cc2.ccs))
cc = cc2;
}
#ifdef USE_UNICODE
else if (WcOption.ucs_conv) {
wc_bool fix_width_conv = WcOption.fix_width_conv;
WcOption.fix_width_conv = WC_FALSE;
wc_output_init(wtf_major_ces, &wtf_major_st);
if (! wc_ces_has_ccs(WC_CCS_SET(ccs), &wtf_major_st)) {
cc2 = wc_any_to_any_ces(cc, &wtf_major_st);
if (cc2.ccs == WC_CCS_US_ASCII) {
Strcat_char(os, (char)(cc2.code & 0x7f));
return;
}
if (!WC_CCS_IS_UNKNOWN(cc2.ccs) &&
cc2.ccs != WC_CCS_CP1258_2 &&
cc2.ccs != WC_CCS_TCVN_5712_3)
cc = cc2;
}
WcOption.fix_width_conv = fix_width_conv;
}
#endif
}
switch (WC_CCS_TYPE(cc.ccs)) {
case WC_CCS_A_CS94:
if (cc.ccs == wtf_gr_ccs) {
s[0] = (cc.code & 0x7f) | 0x80;
n = 1;
break;
}
if (cc.ccs == WC_CCS_JIS_X_0201K && !WcOption.use_jisx0201k) {
cc2 = wc_jisx0201k_to_jisx0208(cc);
if (!WC_CCS_IS_UNKNOWN(cc2.ccs)) {
wtf_push(os, cc2.ccs, cc2.code);
return;
}
}
s[0] = WTF_C_CS94;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = (cc.code & 0x7f) | 0x80;
n = 3;
break;
case WC_CCS_A_CS94W:
if (cc.ccs == wtf_gr_ccs) {
s[0] = ((cc.code >> 8) & 0x7f) | 0x80;
s[1] = ( cc.code & 0x7f) | 0x80;
n = 2;
break;
}
s[0] = WTF_C_CS94W;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = ((cc.code >> 8) & 0x7f) | 0x80;
s[3] = ( cc.code & 0x7f) | 0x80;
n = 4;
break;
case WC_CCS_A_CS96:
if (WcOption.use_combining && wc_is_combining(cc))
s[0] = WTF_C_CS96_C;
else if (cc.ccs == wtf_gr_ccs && (cc.code & 0x7f) > 0x20) {
s[0] = (cc.code & 0x7f) | 0x80;
n = 1;
break;
} else
s[0] = WTF_C_CS96;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = (cc.code & 0x7f) | 0x80;
n = 3;
break;
case WC_CCS_A_CS96W:
if (cc.ccs == wtf_gr_ccs && ((cc.code >> 8) & 0x7f) > 0x20) {
s[0] = ((cc.code >> 8) & 0x7f) | 0x80;
s[1] = ( cc.code & 0x7f) | 0x80;
n = 2;
break;
}
s[0] = WTF_C_CS96W;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = ((cc.code >> 8) & 0x7f) | 0x80;
s[3] = ( cc.code & 0x7f) | 0x80;
n = 4;
break;
case WC_CCS_A_CS942:
if (cc.ccs == wtf_gr_ccs) {
s[0] = (cc.code & 0x7f) | 0x80;
n = 1;
break;
}
s[0] = WTF_C_CS942;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = (cc.code & 0x7f) | 0x80;
n = 3;
break;
case WC_CCS_A_PCS:
if (WcOption.use_combining && wc_is_combining(cc))
s[0] = WTF_C_PCS_C;
else if (cc.ccs == wtf_gr_ccs && (cc.code & 0x7f) > 0x20) {
s[0] = (cc.code & 0x7f) | 0x80;
n = 1;
break;
} else
s[0] = WTF_C_PCS;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = (cc.code & 0x7f) | 0x80;
n = 3;
break;
case WC_CCS_A_PCSW:
switch (cc.ccs) {
case WC_CCS_SJIS_EXT:
cc = wc_sjis_ext_to_cs94w(cc);
break;
case WC_CCS_GBK:
cc = wc_gbk_to_cs128w(cc);
break;
case WC_CCS_GBK_EXT:
cc = wc_gbk_ext_to_cs128w(cc);
break;
case WC_CCS_BIG5:
cc = wc_big5_to_cs94w(cc);
break;
case WC_CCS_HKSCS:
cc = wc_hkscs_to_cs128w(cc);
break;
case WC_CCS_JOHAB:
cc = wc_johab_to_cs128w(cc);
break;
case WC_CCS_UHC:
cc = wc_uhc_to_cs128w(cc);
break;
}
if (cc.ccs == wtf_gr_ccs && ((cc.code >> 8) & 0x7f) > 0x20) {
s[0] = ((cc.code >> 8) & 0x7f) | 0x80;
s[1] = ( cc.code & 0x7f) | 0x80;
n = 2;
break;
}
s[0] = WTF_C_PCSW;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = ((cc.code >> 8) & 0x7f) | 0x80;
s[3] = ( cc.code & 0x7f) | 0x80;
n = 4;
break;
case WC_CCS_A_WCS16:
s[0] = (WC_CCS_IS_WIDE(cc.ccs) ? WTF_C_WCS16W : WTF_C_WCS16)
| (WC_CCS_IS_COMB(cc.ccs) ? WTF_C_COMB : 0);
wcs16_to_wtf(cc.code, s + 1);
s[1] |= (WC_CCS_INDEX(cc.ccs) << 2);
n = 4;
break;
case WC_CCS_A_WCS32:
s[0] = (WC_CCS_IS_WIDE(cc.ccs) ? WTF_C_WCS32W : WTF_C_WCS32)
| (WC_CCS_IS_COMB(cc.ccs) ? WTF_C_COMB : 0);
wcs32_to_wtf(cc.code, s + 1);
s[1] |= (WC_CCS_INDEX(cc.ccs) << 4);
n = 6;
break;
default:
s[0] = WTF_C_UNKNOWN;
s[1] = WC_CCS_INDEX(cc.ccs) | 0x80;
s[2] = (cc.code & 0x7f) | 0x80;
n = 3;
break;
}
Strcat_charp_n(os, (char *)s, n);
}
void
wtf_push_unknown(Str os, wc_uchar *p, size_t len)
{
for (; len--; p++) {
if (*p & 0x80)
wtf_push(os, WC_CCS_UNKNOWN, *p);
else
Strcat_char(os, (char)*p);
}
}
wc_wchar_t
wtf_parse1(wc_uchar **p)
{
wc_uchar *q = *p;
wc_wchar_t cc;
if (*q < 0x80) {
cc.ccs = WC_CCS_US_ASCII;
cc.code = *(q++);
} else if (*q > 0xa0) {
cc.ccs = wtf_gr_ccs;
if (WC_CCS_IS_WIDE(cc.ccs) && *(q+1)) {
cc.code = ((wc_uint32)*q << 8) | *(q+1);
q += 2;
} else
cc.code = *(q++);
} else {
cc.ccs = (wc_uint32)CCS_MAP[*(q++) - 0x80] << 8;
switch (WC_CCS_TYPE(cc.ccs)) {
case WC_CCS_A_CS94:
case WC_CCS_A_CS96:
case WC_CCS_A_CS942:
case WC_CCS_A_PCS:
case WC_CCS_A_UNKNOWN:
if (*q && *(q+1)) {
cc.ccs |= *(q++) & 0x7f;
cc.code = *(q++);
} else {
cc.ccs = WC_CCS_US_ASCII;
cc.code = (wc_uint32)' ';
}
break;
case WC_CCS_A_CS94W:
case WC_CCS_A_CS96W:
case WC_CCS_A_PCSW:
if (*q && *(q+1) && *(q+2)) {
cc.ccs |= *(q++) & 0x7f;
cc.code = ((wc_uint32)*q << 8) | *(q+1);
q += 2;
} else {
cc.ccs = WC_CCS_US_ASCII;
cc.code = (wc_uint32)' ';
}
break;
case WC_CCS_A_WCS16:
case WC_CCS_A_WCS16W:
if (*q && *(q+1) && *(q+2)) {
cc.ccs |= (*q & 0x7c) >> 2;
cc.code = wtf_to_wcs16(q);
q += 3;
} else {
cc.ccs = WC_CCS_US_ASCII;
cc.code = (wc_uint32)' ';
}
break;
case WC_CCS_A_WCS32:
case WC_CCS_A_WCS32W:
if (*q && *(q+1) && *(q+2) && *(q+3) && *(q+4)) {
cc.ccs |= (*q & 0x70) >> 4;
cc.code = wtf_to_wcs32(q);
q += 5;
} else {
cc.ccs = WC_CCS_US_ASCII;
cc.code = (wc_uint32)' ';
}
break;
default:
/* case 0: */
cc.ccs = WC_CCS_US_ASCII;
cc.code = (wc_uint32)' ';
break;
}
}
*p = q;
switch (cc.ccs) {
case WC_CCS_SJIS_EXT_1:
case WC_CCS_SJIS_EXT_2:
return wc_cs94w_to_sjis_ext(cc);
case WC_CCS_GBK_1:
case WC_CCS_GBK_2:
return wc_cs128w_to_gbk(cc);
case WC_CCS_GBK_EXT_1:
case WC_CCS_GBK_EXT_2:
return wc_cs128w_to_gbk_ext(cc);
case WC_CCS_BIG5_1:
case WC_CCS_BIG5_2:
return wc_cs94w_to_big5(cc);
case WC_CCS_HKSCS_1:
case WC_CCS_HKSCS_2:
return wc_cs128w_to_hkscs(cc);
case WC_CCS_JOHAB_1:
case WC_CCS_JOHAB_2:
case WC_CCS_JOHAB_3:
return wc_cs128w_to_johab(cc);
case WC_CCS_UHC_1:
case WC_CCS_UHC_2:
return wc_cs128w_to_uhc(cc);
}
return cc;
}
wc_wchar_t
wtf_parse(wc_uchar **p)
{
wc_uchar *q;
wc_wchar_t cc, cc2;
wc_uint32 ucs, ucs2;
if (**p < 0x80) {
cc.ccs = WC_CCS_US_ASCII;
cc.code = *((*p)++);
} else
cc = wtf_parse1(p);
if ((! WcOption.use_combining) || WTF_WIDTH_MAP[**p])
return cc;
q = *p;
cc2 = wtf_parse1(&q);
if ((cc.ccs == WC_CCS_US_ASCII || cc.ccs == WC_CCS_CP1258_1) &&
WC_CCS_SET(cc2.ccs) == WC_CCS_CP1258_1) {
cc2.code = wc_cp1258_precompose(cc.code, cc2.code);
if (cc2.code) {
cc2.ccs = WC_CCS_CP1258_2;
*p = q;
return cc2;
}
} else if ((cc.ccs == WC_CCS_US_ASCII || cc.ccs == WC_CCS_TCVN_5712_1) &&
WC_CCS_SET(cc2.ccs) == WC_CCS_TCVN_5712_1) {
cc2.code = wc_tcvn5712_precompose(cc.code, cc2.code);
if (cc2.code) {
cc2.ccs = WC_CCS_TCVN_5712_3;
*p = q;
return cc2;
}
}
#ifdef USE_UNICODE
else if ((cc.ccs == WC_CCS_US_ASCII || cc.ccs == WC_CCS_ISO_8859_1 ||
WC_CCS_IS_UNICODE(cc.ccs)) && WC_CCS_IS_UNICODE(cc2.ccs)) {
while (1) {
ucs = (WC_CCS_SET(cc.ccs) == WC_CCS_UCS_TAG)
? wc_ucs_tag_to_ucs(cc.code) : cc.code;
ucs2 = (WC_CCS_SET(cc2.ccs) == WC_CCS_UCS_TAG)
? wc_ucs_tag_to_ucs(cc2.code) : cc2.code;
ucs = wc_ucs_precompose(ucs, ucs2);
if (ucs == WC_C_UCS4_ERROR)
break;
if (WC_CCS_SET(cc.ccs) == WC_CCS_UCS_TAG)
cc.code = wc_ucs_to_ucs_tag(ucs, wc_ucs_tag_to_tag(cc.code));
else {
cc.ccs = wc_ucs_to_ccs(ucs);
cc.code = ucs;
}
*p = q;
if (! WTF_WIDTH_MAP[*q])
break;
cc2 = wtf_parse1(&q);
if (! WC_CCS_IS_UNICODE(cc2.ccs))
break;
}
}
#endif
return cc;
}
wc_ccs
wtf_get_ccs(wc_uchar *p)
{
return wtf_parse1(&p).ccs;
}
wc_uint32
wtf_get_code(wc_uchar *p)
{
return wtf_parse1(&p).code;
}
wc_bool
wtf_is_hangul(wc_uchar *p)
{
if (*p > 0xa0)
return (wtf_gr_ccs == WC_CCS_KS_X_1001 || wtf_gr_ccs == WC_CCS_JOHAB_1);
else if (*p == WTF_C_CS94W)
return ((*(p + 1) & 0x7f) == WC_F_KS_X_1001);
else if (*p == WTF_C_PCSW) {
wc_uchar f = *(p + 1) & 0x7f;
return (f == WC_F_JOHAB_1 || f == WC_F_JOHAB_2 || f == WC_F_JOHAB_3 ||
f == WC_F_UHC_1 || f == WC_F_UHC_2);
}
#ifdef USE_UNICODE
else if (*p == WTF_C_WCS16W) {
wc_uchar f = (*(++p) & 0x7f) >> 2;
if (f == WC_F_UCS2)
return wc_is_ucs_hangul(wtf_to_wcs16(p));
} else if (*p == WTF_C_WCS32W) {
wc_uchar f = (*(++p) & 0x7f) >> 4;
if (f == WC_F_UCS_TAG)
return wc_is_ucs_hangul(wc_ucs_tag_to_ucs(wtf_to_wcs32(p)));
}
#endif
return WC_FALSE;
}
char *
wtf_conv_fit(char *s, wc_ces ces)
{
wc_uchar *p;
Str os;
wc_wchar_t cc;
wc_ces major_ces;
wc_bool pre_conv, ucs_conv;
if (ces == WC_CES_WTF || ces == WC_CES_US_ASCII)
return s;
for (p = (wc_uchar *)s; *p && *p < 0x80; p++)
;
if (! *p)
return s;
os = Strnew_size(strlen(s));
if (p > (wc_uchar *)s)
Strcopy_charp_n(os, s, (int)(p - (wc_uchar *)s));
major_ces = wtf_major_ces;
pre_conv = WcOption.pre_conv;
ucs_conv = WcOption.ucs_conv;
wtf_major_ces = ces;
WcOption.pre_conv = WC_TRUE;
WcOption.ucs_conv = WC_TRUE;
while (*p) {
cc = wtf_parse1(&p);
wtf_push(os, cc.ccs, cc.code);
}
wtf_major_ces = major_ces;
WcOption.pre_conv = pre_conv;
WcOption.ucs_conv = ucs_conv;
return os->ptr;
}
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