ref: 1bea44dc3654c8bb7ab47ebeb5c975734a6aa3f4
dir: /main.c/
/*
* Mostly based on the original source codes of Plan 9 release 2
* distribution.
* by Kenji Okamoto, August 4 2000
* Osaka Prefecture Univ.
* okamoto@granite.cias.osakafu-u.ac.jp
*/
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "ktrans.h"
#include "jisho.h"
#define LSIZE 256
Rune lbuf[LSIZE]; /* hiragana buffer for key input written by send() */
Map *table = hira; /* default language conversion table */
uchar okurigana[LSIZE]; /* buffer for okurigana */
char okuri = 0; /* buffer/flag for capital input char */
int in, out;
int llen, olen, joshi = 0;
int natural = 1; /* not Japanese but English mode */
int changelang(int);
int dotrans(Dictionary*);
int noter(void *, char *);
int nrune(char *);
void send(uchar *, int);
Map *match(uchar *p, int *nc, Map *table);
extern Dictionary *openQDIC(char *);
extern KouhoList *getKouhoHash(Dictionary*, char *);
extern KouhoList *getKouhoFile(DicList*, char *);
extern void freeQDIC(Dictionary*);
extern void selectKouho(KouhoList **, KouhoList*);
void
main(int argc, char **argv)
{
uchar *bp, *ep, buf[128];
Map *mp;
int nchar, wantmore;
int n, c;
char jishoname[64], *dicname;
Dictionary *jisho;
USED(argc);
USED(argv);
dicname = getenv("KTJISHO");
if(!dicname)
dicname = strcat(getenv("home"), "/lib/ktrans-jisho");
strcpy(jishoname, dicname);
jisho = openQDIC(jishoname);
in = _IO_stream[0].fd;
out = _IO_stream[1].fd;
if (rfork(RFPROC))
exits(0); /* parent process will die */
atnotify(noter, 1);
bp = ep = buf; /* bp = base point of input string */
/* ep = end point of input string */
/* buf = unsigned buffer array */
wantmore = 0;
for (;;) { /* key board input loop */
getmore:
if (bp>=ep || wantmore) {
if (wantmore==0)
bp = ep = buf; /* clear all */
n = read(in, ep, &buf[sizeof(buf)]-ep); /* read from stdin */
if (n<=0)
exits("");
ep += n; /* ep => end point of input string */
*ep = '\0';
}
while (bp<ep) { /* there are input data */
if (table == hira && natural != 1 && (*bp>'A' && *bp<='Z') && ep-bp<2
&& !strchr("EIOU", *bp)) {
wantmore = 1;
goto getmore;
}
if (!fullrune((char *)bp, ep-bp)) { /* not enough length of input */
wantmore = 1;
goto getmore;
}
wantmore = 0;
if (*bp=='') { /* ^x read ktrans-jisho once more */
freeQDIC(jisho);
jisho = openQDIC(jishoname);
llen = 0;
olen = okuri = joshi = 0;
wantmore=0;
bp=ep=buf;
continue;
}
if (*bp==' ') { /* Shift+Space (start translate comannd) */
c = dotrans(jisho);
if (c)
*bp = c; /* pointer to translated rune */
else
bp++;
continue;
}
if (*bp==' ') { /* ^l (no translate comannd) */
bp++;
llen = 0;
olen = okuri = joshi = 0;
continue;
}
if (changelang(*bp)) { /* change language mode OK */
bp++;
olen = okuri = joshi = 0;
continue;
}
if (natural || *bp<=' ' || *bp>='{') { /* English mode but not ascii */
Rune r;
int rlen = chartorune(&r, (char *)bp);
send(bp, rlen); /* write bp to /dev/cons */
bp += rlen;
continue;
}
if (table == hira && (*bp >= 'A' && *bp <= 'Z') && (*(bp+1) < 'A'
|| *(bp+1) > 'Z')) {
*bp = okuri = tolower(*bp);
joshi = olen = 0;
} else if (table == hira && (*bp >= 'A' && *bp <= 'Z') &&
(*(bp+1) >= 'A' && *(bp+1) <= 'Z')) {
*bp = okuri = tolower(*bp);
*(bp+1) = tolower(*(bp+1));
joshi = 1;
olen = 0;
}
/* BUG! we have to hit ^l at every beginning of the new line... sorry
if (table == hira && *bp == '\n') {
Rune r;
int rlen = chartorune(&r, (char *)bp);
send(bp, rlen);
bp++;
olen = okuri = joshi = 0;
continue;
}
*/
mp = match(bp, &nchar, table);
if (mp == 0) {
if (nchar>0) { /* match, longer possible */
wantmore++;
break;
}
send(bp++, 1); /* alphabet in kana mode */
} else {
send((uchar*)mp->kana, strlen(mp->kana));
bp += nchar;
}
}
}
}
int
noter(void *x, char *note)
{
USED(x);
if (strcmp(note, "interrupt")==0)
return 1;
else
return 0;
}
int
min(int a, int b)
{
return a<b? a: b;
}
/*
*send UTF string (p) with length (n) to stdout
* and write rune (r) in global lbuf[] buffer
* or okurigana[] buffer if okuri (verb or joshi) mode
*/
void
send(uchar *p, int n)
{
Rune r;
uchar *ep;
if (write(out, (char *)p, n) != n) /* write to stdout */
exits("");
if (llen>LSIZE-64) {
memmove((char*)lbuf, (char*)lbuf+64, 64*sizeof(Rune));
llen -= 64;
}
if (table!=hira || natural)
return;
ep = p+n;
if(okuri) {
while (olen<LSIZE && p<ep) okurigana[olen++] = *p++;
}
else {
while (llen<LSIZE && p<ep) {
p += chartorune(&r, (char*)p);
if (r=='\b') { /* handle backspace */
if (llen>0)
llen--;
continue;
}
if (r==0x80) /* ignore view key */
continue;
/*
if (r<0x3041 || r>0x309e) { reset if out of hiragana range
llen = 0; we use this for okuri-ari entries
continue;
}
*/
lbuf[llen++] = r;
}
}
}
/*
* Romaji to Hiragana/Katakana conversion
* romaji shoud be input as small letter
* returns the matched address in table, hira, kata etc.
* nc: nubmer of character(return value)
*/
Map *
match(uchar *p, int *nc, Map *table)
{
register Map *longp = 0, *kp;
static char last;
int longest = 0;
*nc = -1;
for (kp=table; kp->roma; kp++) {
if (*p == *kp->roma) {
int lr = strlen(kp->roma);
int len = min(lr, strlen((char *)p));
if (strncmp(kp->roma, (char *)p, len)==0) {
if (len<lr) {
*nc = 1;
return 0;
}
if (len>longest) {
longest = len;
longp = kp;
}
}
}
}
if (longp) {
last = longp->roma[longest-1];
*nc = longp->advance;
}
return(longp);
}
int
changelang(int c)
{
if (c==' ') { /* ^k (Japanese Katakana input mode) */
natural = 0;
table = kata;
llen = 0;
return 1;
}
if (c=='') { /* ^n (Japanese hiragana mode ) */
natural = 0;
llen = 0;
table = hira;
return 1;
}
if (c=='') { /* ^e (English mode) */
natural = 1;
llen = 0;
return 1;
}
if (c=='') { /* ^r (Russian mode) */
natural = 0;
table = cyril;
llen = 0;
return 1;
}
if (c=='') { /* ^g (Greek mode ) */
natural = 0;
table = greek;
llen = 0;
return 1;
}
return 0;
}
/*
* write translated kanji runes to stdout
* and returns last charcter if it's not Shift+Space.
* if the last is Shift+Space, proceed translation to next kouho
*/
int
dotrans(Dictionary *dic)
{
Rune *res, r[1];
char v[1024], *p, tbuf[64], hirabuf[64];
int j, lastlen, nokouho = 0;
char ch;
KouhoList *fstkouho, *currentkouho;
if (llen==0)
return 0; /* not use kanji transform function */
if (okuri && joshi != 1) {
lbuf[llen++] = (Rune)okuri;
lbuf[llen] = 0;
}else
lbuf[llen] = 0;
okurigana[olen] = 0;
/*
* search the mached index to the key word from the dict hash table , and
* returns a pointer to the matched kouho if success,
* or returns 0 if failed.
*/
res = lbuf;
for (j=0; *res != L'\0'; j += runetochar(v+j, res++));
v[j++] = '\0';
strcpy(tbuf, v);
strcpy(hirabuf, v); /* to remeber the initial hiragana input */
if (okuri && joshi != 1) hirabuf[strlen(hirabuf) - 1] = '\0'; /* verb mode */
if(!(fstkouho = getKouhoHash(dic, v))) { /* not found */
llen = olen = okuri = joshi = 0;
okurigana[0] = 0;
return 0;
}
currentkouho = fstkouho;
for(;;) {
p = currentkouho->kouhotop; /* p to the head of kanji kouho array */
lastlen = nrune(tbuf); /* number of rune chars */
if (okuri && joshi != 1) /* verb mode */
for (j=0; j<lastlen-1; j++)
write(out, "\b", 1); /* clear hiragana input */
else
for (j=0; j<lastlen; j++)
write(out, "\b", 1); /* clear hiragana input */
if (okuri) {
lastlen = nrune((char *)okurigana);
for (j=0; j<lastlen; j++) write(out, "\b", 1);
}
write(out, p, strlen(p)); /* write kanji to stdout */
if (okuri) write(out, (char *)okurigana, olen);
if (read(in, &ch, 1)<=0) /* read from stdin */
exits(0);
if (ch == ' ') { /* if next input is Shift+Space, once more */
if(currentkouho->nextkouho != 0) { /* have next kouho */
nokouho = 0;
strcpy(tbuf, p);
currentkouho = currentkouho->nextkouho;
if (okuri && joshi != 1) { /* verb mode */
for (j=0; j<nrune(tbuf); j++)
write(out, "\b", 1);
}
continue;
} else { /* the last kouho */
if (okuri) {
lastlen = nrune((char *)okurigana);
for (j=0; j<lastlen; j++)
write(out, "\b", 1);
}
for (j=0, lastlen=0; *p != 0; p += j) {
j = chartorune(r, p);
lastlen++;
}
for (j=0; j<lastlen; j++)
write(out, "\b", 1);
if(hirabuf[0])
write(out, hirabuf, strlen(hirabuf));
if(okurigana[0])
write(out, (char *)okurigana, olen);
olen = okuri = joshi = 0;
okurigana[0] = 0;
nokouho = 1;
break;
}
}
else {
if(!nokouho) /* learn the previous use of the kouho */
selectKouho(&(fstkouho->dicitem->kouho), currentkouho);
olen = okuri = joshi = 0;
okurigana[0] = 0;
break;
}
}
llen = 0;
return ch;
}
/*
* returns number of characters in the pointed Rune
*/
int
nrune(char *p)
{
int n = 0;
Rune r;
while (*p) {
p += chartorune(&r, p);
n++;
}
return n;
}