sj3/clstudy.c

/*
 * 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 <string.h>
#include <sys/types.h>
#include "sj_kcnv.h"
#include "kanakan.h"

int  sj2cd_str();
void mvmemd(), mvmemi();

static unsigned char* delcldata(unsigned char* ycode);
static int	      delclold(void);
static unsigned char* srchclpos(unsigned char* ycode);

int clstudy(unsigned char* yomi1, unsigned char* yomi2, STDYOUT* stdy) {
	unsigned char  ytmp[CLSTDY_TMPLEN];
	unsigned char *dst, *ptr;
	int	       ret;
	int	       len1, len2;
	int	       alen, blen;
	int	       i;

	if(!StudyExist()) return ClstudyNoDict;

	if(!yomi1 || !*yomi1) return ClstudyParaErr;

	if(!yomi2 || !*yomi2) {
		if(!sj2cd_str(yomi1, ytmp, CLSTDY_TMPLEN))
			return ClstudyYomiErr;

		(void)delcldata(ytmp);

		ret = ClstudyNormEnd;
	} else if(!stdy) {
		return ClstudyParaErr;
	} else {
		if(!sj2cd_str(yomi1, ytmp, CLSTDY_TMPLEN))
			return ClstudyYomiErr;
		len1 = strlen(ytmp);

		if(!sj2cd_str(yomi2, ytmp + len1, CLSTDY_TMPLEN - len1))
			return ClstudyYomiErr;

		len2	   = len1 + stdy->len;
		ytmp[len2] = 0;
		alen	   = len2 + CL_HDLEN;

		if(alen + 1 >= ClStudyLen) return ClstudyNoArea;

		blen = ClStudyTail - delcldata(ytmp) - 1;

		while(blen < alen) {
			if(!(i = delclold())) break;
			blen += i;
		}

		if(blen >= alen) {
			dst = srchclpos(ytmp);

			ptr = ClStudyTail - alen;
			mvmemd(ptr, ClStudyTail, (ptr - dst));
			ClYomiLen(dst)	= (unsigned char)len2;
			ClGramCode(dst) = stdy->hinshi;
			ClYomi1Len(dst) = (unsigned char)len1;
			ClSetNum(dst, 1);
			memcpy(ytmp, ClYomiPos(dst), len2);

			ret = ClstudyNormEnd;
		} else {
			ret = ClstudyNoArea;
		}
	}

	mkclidx();
	putcldic();

	return ret;
}

static unsigned char*
delcldata(unsigned char* ycode) {
	unsigned char* tagptr;
	unsigned char* ptr1;
	unsigned char* ptr2;
	int	       len1;

	tagptr = ClStudyDict;
	while(!iseocl(tagptr)) {
		ptr1 = ycode;
		ptr2 = ClYomiPos(tagptr);
		len1 = ClYomiLen(tagptr);

		while(*ptr1 && len1) {
			if(*ptr1 != *ptr2) break;
			ptr1++;
			ptr2++;
			len1--;
		}

		if(!*ptr1 || !len1) {
			delclsub(tagptr);
		} else {
			tagptr = ClNextTag(tagptr);
		}
	}

	return tagptr;
}

void delclsub(unsigned char* target) {
	unsigned char* src;
	int	       num;
	int	       tmp;
	int	       len;

	num = ClGetNum(target);
	len = ClBlkLen(target);
	src = target + len;
	mvmemi(src, target, (ClStudyTail - src));
	memset(ClStudyTail - len, 0, len);

	src = ClStudyDict;
	while(!iseocl(src)) {
		tmp = ClGetNum(src);

		if(tmp > num) {
			tmp -= 1;
			ClSetNum(src, tmp);
		}

		src = ClNextTag(src);
	}
}

static int
delclold(void) {
	unsigned char* tagptr;
	unsigned char* target;
	int	       num;
	int	       tmp;

	target = NULL;
	num    = 0;

	tagptr = ClStudyDict;
	while(!iseocl(tagptr)) {

		tmp = ClGetNum(tagptr);

		if(tmp >= num) {
			num    = tmp;
			target = tagptr;
		}

		tagptr = ClNextTag(tagptr);
	}

	if(target) {
		num = ClBlkLen(tagptr);

		delclsub(target);
	}

	return num;
}

static unsigned char*
srchclpos(unsigned char* ycode) {
	unsigned char* tagptr;
	unsigned char* target;
	unsigned char* ptr1;
	unsigned char* ptr2;
	int	       len;
	int	       tmp;

	target = NULL;
	tagptr = ClStudyDict;
	while(!iseocl(tagptr)) {
		tmp = ClGetNum(tagptr);

		tmp++;
		ClSetNum(tagptr, tmp);

		ptr1 = ycode;
		ptr2 = ClYomiPos(tagptr);
		len  = ClYomiLen(tagptr);
		while(*ptr1 && len) {
			if(*ptr1 != *ptr2) break;
			ptr1++;
			ptr2++;
			len--;
		}

		if(!target) {
			if(!len)
				;
			else if(!*ptr1)
				target = tagptr;
			else if(*ptr1 < *ptr2)
				target = tagptr;
		}

		tagptr = ClNextTag(tagptr);
	}

	return target ? target : tagptr;
}

void mkclidx(void) {
	unsigned char* ptr;
	int	       num;
	int	       st, ed;

	if(!StudyExist()) return;

	ptr = ClStudyDict;
	for(num = st = 0; st < 0x100; num++, st = ed) {
		ed = st + ClStudyStep;

		while(!iseocl(ptr)) {
			if((unsigned int)*ClYomiPos(ptr) >= st) break;
			ptr = ClNextTag(ptr);
		}

		if(ClYomiLen(ptr) && ((int)*ClYomiPos(ptr) < ed))
			ClStudyIdx[num] = ptr - ClStudyDict;
		else
			ClStudyIdx[num] = (unsigned short)-1;
	}
}