/* This is an helper function for linenoiseEdit() and is called when the
* user types the <tab> key in order to complete the string currently in the
* input.
*
* The state of the editing is encapsulated into the pointed linenoiseState
* structure as described in the structure definition. */
static int completeLine(struct linenoiseState *ls) {
linenoiseCompletions lc = { 0, NULL };
int nread, nwritten;
char c = 0;
completionCallback(ls->buf,&lc);
if (lc.len == 0) {
linenoiseBeep();
} else {
size_t stop = 0, i = 0;
while(!stop) {
/* Show completion or original buffer */
if (i < lc.len) {
struct linenoiseState saved = *ls;
ls->len = ls->pos = strlen(lc.cvec[i]);
ls->buf = lc.cvec[i];
refreshLine(ls);
ls->len = saved.len;
ls->pos = saved.pos;
ls->buf = saved.buf;
} else {
refreshLine(ls);
}
nread = read(ls->ifd,&c,1);
if (nread <= 0) {
freeCompletions(&lc);
return -1;
}
switch(c) {
case 9: /* tab */
i = (i+1) % (lc.len+1);
if (i == lc.len) linenoiseBeep();
break;
case 27: /* escape */
/* Re-show original buffer */
if (i < lc.len) refreshLine(ls);
stop = 1;
break;
default:
/* Update buffer and return */
if (i < lc.len) {
nwritten = snprintf(ls->buf,ls->buflen,"%s",lc.cvec[i]);
ls->len = ls->pos = nwritten;
}
stop = 1;
break;
}
}
}
freeCompletions(&lc);
return c; /* Return last read character */
}
static int completeLine(int fd, const char *prompt, char *buf, size_t buflen, size_t *len, size_t *pos, size_t cols) {
linenoiseCompletions lc = { 0, NULL };
int nwritten;
char c = 0;
completionCallback(buf,&lc);
if (lc.len == 0) {
beep();
} else {
size_t stop = 0, i = 0;
size_t clen;
while(!stop) {
/* Show completion or original buffer */
if (i < lc.len) {
clen = strlen(lc.cvec[i]);
refreshLine(fd,prompt,lc.cvec[i],clen,clen,cols);
} else {
refreshLine(fd,prompt,buf,*len,*pos,cols);
}
do {
c = linenoiseReadChar(fd);
} while (c == (char)-1);
switch(c) {
case 0:
freeCompletions(&lc);
return -1;
case 9: /* tab */
i = (i+1) % (lc.len+1);
if (i == lc.len) beep();
break;
case 27: /* escape */
/* Re-show original buffer */
if (i < lc.len) {
refreshLine(fd,prompt,buf,*len,*pos,cols);
}
stop = 1;
break;
default:
/* Update buffer and return */
if (i < lc.len) {
nwritten = snprintf(buf,buflen,"%s",lc.cvec[i]);
*len = *pos = nwritten;
}
stop = 1;
break;
}
}
}
freeCompletions(&lc);
return c; /* Return last read character */
}
static int completeLine(struct current *current) {
linenoiseCompletions lc = { 0, NULL };
int c = 0;
completionCallback(current->buf,&lc,completionUserdata);
if (lc.len == 0) {
beep();
} else {
size_t stop = 0, i = 0;
while(!stop) {
/* Show completion or original buffer */
if (i < lc.len) {
struct current tmp = *current;
tmp.buf = lc.cvec[i];
tmp.pos = tmp.len = strlen(tmp.buf);
tmp.chars = utf8_strlen(tmp.buf, tmp.len);
refreshLine(current->prompt, &tmp);
} else {
refreshLine(current->prompt, current);
}
c = fd_read(current);
if (c == -1) {
break;
}
switch(c) {
case '\t': /* tab */
i = (i+1) % (lc.len+1);
if (i == lc.len) beep();
break;
case 27: /* escape */
/* Re-show original buffer */
if (i < lc.len) {
refreshLine(current->prompt, current);
}
stop = 1;
break;
default:
/* Update buffer and return */
if (i < lc.len) {
set_current(current,lc.cvec[i]);
}
stop = 1;
break;
}
}
}
freeCompletions(&lc);
return c; /* Return last read character */
}
static int completeLine(struct linenoiseState *ls)
{
linenoiseCompletions lc = { 0, NULL };
int nwritten = 0;
char c = 0;
completionCallback(ls->buf, &lc);
if (lc.len == 0) {
linenoiseBeep();
} else {
size_t stop = 0, i = 0;
while (!stop) {
/* Show completion or original buffer */
if (i < lc.len) {
struct linenoiseState saved = *ls;
ls->len = ls->pos = strlen(lc.cvec[i]);
ls->buf = lc.cvec[i];
refreshLine(ls);
ls->len = saved.len;
ls->pos = saved.pos;
ls->buf = saved.buf;
} else {
refreshLine(ls);
}
c = serial.getc();
switch (c) {
case TAB: /* tab */
i = (i + 1) % (lc.len + 1);
if (i == lc.len) linenoiseBeep();
break;
case ESC: /* escape */
/* Re-show original buffer */
if (i < lc.len) refreshLine(ls);
stop = 1;
break;
default:
/* Update buffer and return */
if (i < lc.len) {
for (nwritten = 0; nwritten < ls->buflen; nwritten++) {
ls->buf[nwritten] = lc.cvec[i][nwritten];
if (lc.cvec[i][nwritten] == '\0')
break;
}
ls->len = ls->pos = nwritten;
}
stop = 1;
break;
}
}
}
freeCompletions(&lc);
return c; /* Return last read character */
}