sj4/lib/sj4ime/ime.c
2026-07-02 10:08:54 +09:00

180 lines
3.6 KiB
C

#include <sj4ime.h>
#include <sj4lib.h>
#include <sj4charset.h>
#include <stdio.h>
#include <wchar.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
struct sj4ime {
Sj4Lib* lib;
int charset;
Sj4Kouho kouho;
unsigned int last;
u_char romabuf[SJ4BUFSZ];
u_char kanabuf[SJ4BUFSZ];
u_char convbuf[SJ4BUFSZ];
};
static struct sj4table {
const char* roma;
u_char* kana;
const char* roma2;
} kanatbl[] = {
#include "KanaTable"
};
Sj4Ime* sj4_ime(int charset, const char* dict) {
Sj4Ime* ime;
if((ime = calloc(1, sizeof(*ime))) == NULL) return NULL;
if((ime->lib = sj4_open(charset, dict)) == NULL) {
free(ime);
return NULL;
}
ime->charset = charset;
}
static int w_len(wchar_t* wc) {
int i;
for(i = 0; wc[i] != 0; i++);
return i;
}
static int b_len(int charset, Sj4KouhoBuffer* buffer) {
if(charset == SJ4UTF16) {
return w_len(buffer->utf16);
} else {
return strlen(buffer->raw);
}
}
static void concat(int charset, u_char* out, u_char* in) {
int i;
#ifdef UCS
if(charset == SJ4UTF16) {
wchar_t* w_out = (wchar_t*)out;
i = w_len(w_out);
w_out[i + sj4_charset_to(charset, (u_char*)(w_out + i), in, strlen(in))] = 0;
} else
#else
{
i = strlen(out);
out[i + sj4_charset_to(charset, out + i, in, strlen(in))] = 0;
}
#endif
}
static void concat_nc(int charset, u_char* out, u_char* in) {
int i, j;
#ifdef UCS
if(charset == SJ4UTF16) {
wchar_t* w_out = (wchar_t*)out;
i = w_len(w_out);
j = w_len((wchar_t*)in);
memcpy(w_out + i, in, j * sizeof(wchar_t));
w_out[i + j] = 0;
} else
#else
{
i = strlen(out);
j = strlen(in);
memcpy(out + i, in, j);
out[i + j] = 0;
}
#endif
}
#define ZEROBUF memset(&ime->kouho.buffer, 0, sizeof(ime->kouho.buffer))
static void comp(Sj4Ime* ime) {
if(ime->last == 0) {
concat_nc(ime->charset, ime->convbuf, ime->kanabuf);
} else {
concat_nc(ime->charset, ime->convbuf, ime->kouho.buffer.raw);
}
printf("%s\n", ime->convbuf);
ime->kanabuf[0] = 0;
ime->last = 0;
ZEROBUF;
}
void sj4_ime_key(Sj4Ime* ime, int key) {
if(key == '\n') {
comp(ime);
} else if(key == ' ') {
reconvert:
if(b_len(ime->charset, &ime->kouho.buffer) == 0) {
ime->last = sj4_getkan(ime->lib, ime->kanabuf, strlen(ime->kanabuf), &ime->kouho);
} else {
if((ime->last = sj4_nextkan(ime->lib)) == 0) {
ZEROBUF;
goto reconvert;
}
}
} else if(('a' <= tolower(key) && tolower(key) <= 'z') || key == '~' || key == ',' || key == '.' || key == '[' || key == ']') {
int i;
if(ime->last != 0) comp(ime);
key = toupper(key);
if(ime->romabuf[strlen(ime->romabuf) - 1] == 'N' && !(key == 'A' || key == 'I' || key == 'U' || key == 'E' || key == 'O' || key == 'N')) {
ime->romabuf[strlen(ime->romabuf) + 1] = 0;
ime->romabuf[strlen(ime->romabuf)] = 'N';
}
ime->romabuf[strlen(ime->romabuf) + 1] = 0;
ime->romabuf[strlen(ime->romabuf)] = key;
reduce:
for(i = 0; i < sizeof(kanatbl) / sizeof(kanatbl[0]); i++) {
int n = strlen(kanatbl[i].roma);
if(n > strlen(ime->romabuf)) continue;
if(memcmp(ime->romabuf, kanatbl[i].roma, n) == 0) {
int j;
n = strlen(kanatbl[i].roma) - strlen(kanatbl[i].roma2);
memmove(ime->romabuf - (n < 0 ? n : 0), ime->romabuf + (n > 0 ? n : 0), SJ4BUFSZ - n);
if(n > 0) {
for(j = SJ4BUFSZ - n; j < SJ4BUFSZ; j++) ime->romabuf[j] = 0;
} else {
for(j = 0; j < -n; j++) ime->romabuf[j] = 0;
}
memcpy(ime->romabuf, kanatbl[i].roma2, strlen(kanatbl[i].roma2));
concat(ime->charset, ime->kanabuf, kanatbl[i].kana);
goto reduce;
}
}
}
}
void* sj4_ime_convbuf(Sj4Ime* ime) {
return ime->convbuf;
}