merge m17n patch

add libwc

1 files changed, 598 insertions, 0 deletions

diff --git a/libwc/wtf.c b/libwc/wtf.c
new file mode 100644
index 0000000..b8cfdc7
--- /dev/null
+++ b/libwc/wtf.c
@@ -0,0 +1,598 @@
+
+#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;
+
+    while (*p) {
+	w += wtf_width(p);
+	p += WTF_LEN_MAP[*p];
+    }
+    return w;
+}
+
+/*
+size_t
+wtf_len1(wc_uchar *p)
+{
+    return (size_t)WTF_LEN_MAP[*p];
+}
+*/
+
+size_t
+wtf_len(wc_uchar *p)
+{
+    wc_uchar *q = p;
+
+    q += WTF_LEN_MAP[*q];
+    while (*q && ! 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) \
+      ((wc_uint32)((p)[0] & 0x03) << 14) \
+    | ((wc_uint32)((p)[1] & 0x7f) <<  7) \
+    | ((wc_uint32)((p)[2] & 0x7f)      )
+#define wtf_to_wcs32(p) \
+      ((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)) {
+	    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:
+	    cc.ccs |= *(q++) & 0x7f;
+	    cc.code = *(q++);
+	    break;
+	case WC_CCS_A_CS94W:
+	case WC_CCS_A_CS96W:
+	case WC_CCS_A_PCSW:
+	    cc.ccs |= *(q++) & 0x7f;
+	    cc.code = ((wc_uint32)*q << 8) | *(q+1);
+	    q += 2;
+	    break;
+	case WC_CCS_A_WCS16:
+	case WC_CCS_A_WCS16W:
+	    cc.ccs |= (*q & 0x7c) >> 2;
+	    cc.code = wtf_to_wcs16(q);
+	    q += 3;
+	    break;
+	case WC_CCS_A_WCS32:
+	case WC_CCS_A_WCS32W:
+	    cc.ccs |= (*q & 0x70) >> 4;
+	    cc.code = wtf_to_wcs32(q);
+	    q += 5;
+	    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;
+}