/*
 * Copyright (c) 1991-1994  Sony Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL SONY CORPORATION BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of Sony Corporation
 * shall not be used in advertising or otherwise to promote the sale, use
 * or other dealings in this Software without prior written authorization
 * from Sony Corporation.
 *
 */

#include "sj_euc.h"
#include "sj_kcnv.h"
#include "sj_hinsi.h"
#include "sj_yomi.h"

#include "sj_kanakan.h"

void set_size(u_char* p, int size, int plen, int nlen) {
	*p = (u_char)(size >> 8);
	if(nlen & 0x10) *p |= NOKORIYOMITOP;
	if(plen & 0x10) *p |= ASSYUKUYOMITOP;
	*(p + 1) = (u_char)size;
	*(p + 2) = (u_char)((nlen & 0x0f) | ((plen & 0x0f) << 4));
}

static int
isvyomi(u_char* yp) {
	int len;

	if(!*yp) return FALSE;

	if(!(Chrtbl[*yp] & DICTOP)) return FALSE;

	for(len = 0; *yp; yp++) {
		if(!(Chrtbl[*yp]) || (*yp >= Y_KUTEN)) return FALSE;

		if(++len > MAXWDYOMILEN) return FALSE;
	}

	return TRUE;
}

static int
isvknj(u_char* kanji) {
	int len;

	if(!*kanji) return FALSE;

	for(len = 0; *kanji;) {
		if(*kanji == SS3) {
			kanji += 3;
			len += 2;
		} else

		    if(isknj1(*kanji)) {
			kanji += 2;
			len += 2;
		}

		else {
			kanji++;
			len += 2;
		}

		if(len > MAXWDKANJILEN) return FALSE;
	}

	return TRUE;
}

static int
isgrm(TypeGram gram) {
	int grm = gram;

	if(MEISI_1 <= grm && grm <= D_MEISI_6) return TRUE;
	if(MYOUJI <= grm && grm <= JOSUUSI2) return TRUE;
	if(KEIYOUSI_1 <= grm && grm <= DO_ZAHEN) return TRUE;
	if(DO_1DAN_1 <= grm && grm <= DO_WAGO_2) return TRUE;
	if(DO_KAGO_5 <= grm && grm <= DO_WAGO_5) return TRUE;
	if(DO_KAGO_6 <= grm && grm <= DO_WAGO_6) return TRUE;
	if(DO_1DAN_3 <= grm && grm <= DO_WAGO_3) return TRUE;
	if(DO_1DAN_4 <= grm && grm <= DO_WAGO_4) return TRUE;
	if(DO_KAGO_7 <= grm && grm <= DO_WAGO_7) return TRUE;
	if(DO_KAGO_8 <= grm && grm <= DO_WAGO_8) return TRUE;
	if(SP_SA_MI1 <= grm && grm <= TANKANJI) return TRUE;

	return FALSE;
}

u_int addel_arg(SJ4_CONTEXT u_char* yp, u_char* kp, TypeGram grm, u_char* nyp, int len) {
	u_short err = 0;

	if(!sj2cd_str(yp, nyp, len)) err |= AD_BADYOMI;

	if(!isvyomi(nyp)) err |= AD_BADYOMI;

	if(!isvknj(kp)) err |= AD_BADKANJI;

	if(!isgrm(grm)) err |= AD_BADHINSI;

	return err;
}

static void
yomi2kata(u_char* src, u_char* dst) {
	int first;
	int second;

	while((first = *src++)) {
		second = *src++;

		if(first != 0xa4) {
			*dst++ = first;
			*dst++ = second;
		}

		else {
			*dst++ = 0xa5;
			*dst++ = second;
		}
	}

	*dst = 0;
}

static int
top_strcmp(u_char* src, u_char* dst) {
	int i;

	for(i = 0; *src && (*src == *dst); src++, dst++) i++;

	i /= 2;

	return (i > MAXYOMIASKNUMBER) ? MAXYOMIASKNUMBER : i;
}

static int
last_strcmp(u_char* src, u_char* dst) {
	int slen;
	int dlen;

	slen = sstrlen(src);
	dlen = sstrlen(dst);

	if(dlen > MAXYOMIASKNUMBER * 2) return 0;

	if(sstrcmp(src + (slen - dlen), dst)) return 0;

	return (dlen / 2);
}

int cvtknj(SJ4_CONTEXT u_char* yomi, u_char* knj, u_char* dst) {
	u_char	kana[MAXWDYOMILEN * 2 + 1];
	int	len;
	u_char* keep;

	keep = dst;
	yomi2kata(yomi, kana);

	if((len = top_strcmp(yomi, knj))) {
		*dst = (u_char)(ZENHIRAASSYUKU | (len - 1));
	} else if((len = top_strcmp(kana, knj))) {
		*dst = (u_char)(ZENKATAASSYUKU | (len - 1));
	}

	if(len) {
		knj += len * 2;
		dst++;
	}

	if(*knj) {
		for(;;) {
			if((len = last_strcmp(yomi, knj))) {
				*dst++ = (u_char)(ZENHIRAASSYUKU | (len - 1));
				break;
			} else if((len = last_strcmp(kana, knj))) {
				*dst++ = (u_char)(ZENKATAASSYUKU | (len - 1));
				break;
			} else if(*knj == SS2) {
				knj++;
				*dst++ = (u_char)LEADINGHANKAKU;
				*dst++ = *knj++;
			} else if(*knj == SS3) {
				knj++;
				*dst++ = (*knj & NORMALKANJIMASK);
				knj++;
				*dst++ = *knj++;
			} else if(*knj & 0x80) {
				*dst++ = (*knj & NORMALKANJIMASK);
				knj++;
				*dst++ = (*knj & NORMALKANJIMASK);
				knj++;
			} else {
				*dst++ = (u_char)LEADINGHANKAKU;
				*dst++ = *knj++;
			}
			if(!*knj) {
				break;
			}
		}
	}
	*dst = 0;

	return (dst - keep);
}

int srchkana(SJ4_CONTEXT u_char** ptr, int* saml) {
	u_char* p;
	int	cmp;
	int	cnt = 0;
	u_char	same;
	int	flg = 0;

	same = 0;

	p = segtop();

	while(!segend(p)) {
		if(flg == 0) {
			cmp = yomicmp(SJ4_CONTEXT_PASS cnvstart, p, &same);

			if(cmp == OVER) break;
			if(cmp == MATCH && *(cnvstart + same) == 0) {
				*ptr  = p;
				*saml = same;
				flg   = 1;
			}
		}
		p = getntag(p);
		cnt++;
	}

	if(flg != 0) return cnt;

	*ptr  = p;
	*saml = same;
	return 0;
}

int srchgram(u_char* ptr, u_char** dst, TypeGram hinsi) {
	u_char* endp;
	int	cnt = 0, nlen;
	int	flg = FALSE;

	endp = getntag(ptr);

	nlen = getnlen(ptr);

	ptr += DOUONBLKSIZENUMBER + nlen;
	while(ptr < endp) {
		if(*ptr == hinsi) {
			*dst = ptr;
			flg  = TRUE;
		}
		do {
			ptr += codesize(*ptr);
		} while(*ptr != HINSIBLKTERM);
		ptr++;
		cnt++;
	}

	if(flg) return cnt;

	*dst = ptr;
	return 0;
}

int srchkanji(u_char** dst, u_char* knj, int klen) {
	u_char* ptr;
	u_char *p, *q;
	int	len;
	int	flg = FALSE;
	int	cnt = 0;

	ptr = *dst + 1;

	while(*ptr != HINSIBLKTERM) {
		for(p = ptr, q = knj, len = klen; len; len--)
			if(*p++ != *q++) break;

		if(!len) {
			*dst = ptr;
			flg  = TRUE;
		}

		while(!(*ptr == KANJISTREND)) {
			ptr += codesize(*ptr);
		}
		ptr++;
		cnt++;
	}

	if(!flg) *dst = ptr;

	return cnt;
}

TypeIdxOfs
count_uidx(SJ4_CONTEXT2) {
	u_char* p;

	p = get_idxptr(SJ4_CONTEXT_PASS curdict->segunit - 1);
	while(*p++);

	return (curdict->idxlen - (p - idxbuf));
}

void chg_uidx(SJ4_CONTEXT TypeDicSeg seg, u_char* yomi, int len) {
	u_char *p, *q;
	int	olen;

	p = get_idxptr(SJ4_CONTEXT_PASS seg);

	olen = sstrlen(p);

	q = idxbuf + curdict->idxlen;

	if(len > olen) {
		mvmemd(q - (len - olen), q, (int)(q - (len - olen) - p));
	} else {
		mvmemi(p + (olen - len), p, (int)(q - (p + (olen - len))));
	}
	while(len--) *p++ = *yomi++;

	(*curdict->putidx)(SJ4_CONTEXT_PASS curdict, 0);

	mkidxtbl(SJ4_CONTEXT_PASS curdict);
}