/*
 * 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.
 *
 */

/*
 * $SonyRCSfile: peepdic.c,v $
 * $SonyRevision: 1.2 $
 * $SonyDate: 1995/07/21 05:22:51 $
 */

#include "sj_kcnv.h"
#include "sj_yomi.h"

#include "sj_kanakan.h"

static int  prev_kanji(SJ4_CONTEXT2), prev_hinsi(SJ4_CONTEXT2), prev_douon(SJ4_CONTEXT2);
static int  next_kanji(SJ4_CONTEXT2), next_hinsi(SJ4_CONTEXT2), next_douon(SJ4_CONTEXT2);
static void set_kanji(SJ4_CONTEXT2), set_buf(SJ4_CONTEXT u_char*), add_yomi(SJ4_CONTEXT2);
static void set_idxyomi(SJ4_CONTEXT2);

static void cd2sjh_chr(u_char ch, u_char* dst);

int getusr(SJ4_CONTEXT u_char* buf) {
	int nlen;

	peepyomi[0] = peepknj[0] = peepgrm = 0;

	(*curdict->getdic)(SJ4_CONTEXT_PASS curdict, peepidx = DICSEGBASE);
	get_askknj(SJ4_CONTEXT_PASS2);

	peepdptr = segtop();

	if(segend(peepdptr)) return 0;

	add_yomi(SJ4_CONTEXT_PASS2);

	nlen	 = getnlen(peepdptr);
	peephptr = peepdptr + DOUONBLKSIZENUMBER + nlen;

	peepgrm = *peephptr;

	peepkptr = peephptr + 1;

	set_kanji(SJ4_CONTEXT_PASS2);

	set_buf(SJ4_CONTEXT_PASS buf);

	return -1;
}

int nextusr(SJ4_CONTEXT u_char* buf) {
	(*curdict->getdic)(SJ4_CONTEXT_PASS curdict, peepidx);
	get_askknj(SJ4_CONTEXT_PASS2);

	if(next_kanji(SJ4_CONTEXT_PASS2)) {
		set_kanji(SJ4_CONTEXT_PASS2);

		set_buf(SJ4_CONTEXT_PASS buf);

		return -1;
	}

	return 0;
}

int prevusr(SJ4_CONTEXT u_char* buf) {
	(*curdict->getdic)(SJ4_CONTEXT_PASS curdict, peepidx);
	get_askknj(SJ4_CONTEXT_PASS2);

	if(prev_kanji(SJ4_CONTEXT_PASS2)) {
		set_kanji(SJ4_CONTEXT_PASS2);

		set_buf(SJ4_CONTEXT_PASS buf);

		return -1;
	}

	return 0;
}

static void
set_kanji(SJ4_CONTEXT2) {
	int len;

	len		 = getkanji(SJ4_CONTEXT_PASS peepyomi, getnlen(peepdptr) + getplen(peepdptr),
				    peepkptr, peepknj);
	*(peepknj + len) = 0;
}

static void
set_buf(SJ4_CONTEXT u_char* buf) {
	u_char* p;
	int	i, csize;

	for(p = peepyomi; *p;) *buf++ = *p++;
	*buf++ = 0;

	for(p = peepknj; *p;) {
		csize = euc_codesize(*p);
		for(i = 0; i < csize; i++) *buf++ = *p++;
	}
	*buf++ = 0;

	*buf++ = peepgrm;
	*buf++ = 0;
}

static int
prev_kanji(SJ4_CONTEXT2) {
	u_char* p1;
	u_char* p2;

	p1 = peephptr + 1;
	if(peepkptr <= p1) return prev_hinsi(SJ4_CONTEXT_PASS2);

	p2 = peepkptr;
	while(p1 < p2) {
		peepkptr = p1;
		p1	 = skipkstr(p1);
	}

	return -1;
}

static int
prev_hinsi(SJ4_CONTEXT2) {
	u_char* p1;
	u_char* p2;
	int	nlen;

	nlen = getnlen(peepdptr);
	p1   = peepdptr + DOUONBLKSIZENUMBER + nlen;

	if(peephptr <= p1) return prev_douon(SJ4_CONTEXT_PASS2);

	p2 = peephptr;
	while(p1 < p2) {
		peephptr = p1;
		p1	 = skiphblk(p1);
	}

	peepgrm = *peephptr;

	p1 = peephptr + 1;
	while(*p1 != HINSIBLKTERM) {
		peepkptr = p1;

		p1 = skipkstr(p1);
	}

	return -1;
}

static int
prev_douon(SJ4_CONTEXT2) {
	u_char* p1;
	u_char* p2;
	int	nlen;

	if(peepdptr <= segtop()) {
		if(peepidx <= DICSEGBASE) return 0;

		(*curdict->getdic)(SJ4_CONTEXT_PASS curdict, --peepidx);
		get_askknj(SJ4_CONTEXT_PASS2);

		set_idxyomi(SJ4_CONTEXT_PASS2);

		p1 = segtop();
		do {
			peepdptr = p1;

			add_yomi(SJ4_CONTEXT_PASS2);

			p1 = getntag(p1);
		} while(!segend(p1));
	} else {
		set_idxyomi(SJ4_CONTEXT_PASS2);

		p1 = segtop();
		p2 = peepdptr;
		do {
			peepdptr = p1;

			add_yomi(SJ4_CONTEXT_PASS2);

			p1 = getntag(p1);
		} while(p1 < p2);
	}

	nlen = getnlen(peepdptr);
	p1   = peepdptr + DOUONBLKSIZENUMBER + nlen;

	p2 = getntag(peepdptr);
	do {
		peephptr = p1;
		p1	 = skiphblk(p1);
	} while(p1 < p2);

	peepgrm = *peephptr;

	p1 = peephptr + 1;
	do {
		peepkptr = p1;

		p1 = skipkstr(p1);
	} while(*p1 != HINSIBLKTERM);

	return -1;
}

static int
next_kanji(SJ4_CONTEXT2) {
	u_char* p1;

	p1 = skipkstr(peepkptr);

	if(*p1 == HINSIBLKTERM) return next_hinsi(SJ4_CONTEXT_PASS2);

	peepkptr = p1;

	return -1;
}

static int
next_hinsi(SJ4_CONTEXT2) {
	u_char* p1;

	p1 = skiphblk(peephptr);

	if(p1 >= getntag(peepdptr)) return next_douon(SJ4_CONTEXT_PASS2);

	peephptr = p1;

	peepgrm = *p1;

	peepkptr = p1 + 1;

	return -1;
}

static int
next_douon(SJ4_CONTEXT2) {
	u_char* p1;
	int	nlen;

	p1 = getntag(peepdptr);

	if(segend(p1)) {
		if(peepidx + 1 < curdict->segunit) {
			(*curdict->getdic)(SJ4_CONTEXT_PASS curdict, ++peepidx);
			get_askknj(SJ4_CONTEXT_PASS2);
			peepdptr = segtop();

			set_idxyomi(SJ4_CONTEXT_PASS2);
		} else
			return 0;
	} else {
		peepdptr = p1;
	}

	add_yomi(SJ4_CONTEXT_PASS2);

	nlen	 = getnlen(peepdptr);
	peephptr = peepdptr + DOUONBLKSIZENUMBER + nlen;

	peepgrm = *peephptr;

	peepkptr = peephptr + 1;

	return -1;
}

static void
set_idxyomi(SJ4_CONTEXT2) {
	u_char *p1, *p2;

	if((p2 = get_idxptr(SJ4_CONTEXT_PASS peepidx))) {
		p1 = peepyomi;
		while(*p2) {
			cd2sjh_chr(*p2++, p1);
			p1 += 2;
		}
		*p1 = 0;
	}
}

static void
add_yomi(SJ4_CONTEXT2) {
	int	nlen;
	u_char *p1, *p2;

	nlen = getnlen(peepdptr);

	p1 = peepyomi + getplen(peepdptr) * 2;

	p2 = peepdptr + DOUONBLKSIZENUMBER;

	while(nlen--) {
		cd2sjh_chr(*p2++, p1);
		p1 += 2;
	}

	*p1 = 0;
}

static void
cd2sjh_chr(u_char ch, u_char* dst) {
	if(ch == _TYOUON) {
		*dst++ = 0xa1;
		*dst++ = 0xbc;
	} else if(ch == _IGETA) {
		*dst++ = 0xa1;
		*dst++ = 0xf4;
	} else if(ch == _ATTO) {
		*dst++ = 0xa1;
		*dst++ = 0xf7;
	} else if(ch == _YUUBIN) {
		*dst++ = 0xa2;
		*dst++ = 0xa9;
	} else if(ch < N_0) {
	} else if(ch <= N_9) {
		*dst++ = 0xa3;
		*dst++ = ch + 0xa0;
	} else if(ch <= A_Z) {
		*dst++ = 0xa3;
		*dst++ = ch + 0xa7;
	} else if(ch <= A_z) {
		*dst++ = 0xa3;
		*dst++ = ch + 0xad;
	} else if(ch <= _NN) {
		*dst++ = 0xa4;
		*dst++ = ch + 0x53;
	} else if(ch <= _XKE) {
		*dst++ = 0xa5;
		*dst++ = ch + 0x53;
	} else {
	}
}
