/* (not including trailing NULL) */
int
text_gets(TW *tw, char *line, int len)
{
LPSTR dest = line;
LPSTR limit = dest + len; /* don't leave room for '\0' */
int ch;
do {
if (dest >= limit)
break;
ch = text_getch(tw);
switch(ch) {
case 26: /* ^Z == EOF */
return 0;
case '\b': /* ^H */
case 0x7f: /* DEL */
if (dest > line) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
#ifndef WINDOWS_NO_UNICODE
while ((dest > line) &&
((dest[-1] & 0xC0) == 0x80)) {
/* It's a UTF-8 continuation char. */
--(dest);
}
if (dest == line)
break;
#endif
--dest;
}
break;
case 21: /* ^U */
while (dest > line) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
--dest;
}
break;
default:
*dest++ = ch;
text_putch(tw, ch);
break;
}
} while (ch != '\n');
*dest = '\0';
return (dest-line);
}
/* (not including trailing NULL) */
int
text_gets(TW *tw, char *line, int len)
{
LPSTR dest = line;
LPSTR limit = dest + len; /* don't leave room for '\0' */
int ch;
do {
if (dest >= limit)
break;
ch = text_getch(tw);
switch(ch) {
case 26: /* ^Z == EOF */
return 0;
case '\b': /* ^H */
case 0x7f: /* DEL */
if (dest > line) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
--dest;
}
break;
case 21: /* ^U */
while (dest > line) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
--dest;
}
break;
default:
*dest++ = ch;
text_putch(tw, ch);
break;
}
} while (ch != '\n');
*dest = '\0';
return (dest-line);
}
/* Read line from keyboard using buffered input
* Return at most 'len' characters
* Does NOT add null terminating character
* This is NOT the same as fgets()
* Do not mix this with calls to text_getch()
*/
int
text_read_line(TW *tw, char *line, int len)
{
int ch;
if (tw->line_eof)
return 0;
while (!tw->line_complete) {
/* we have not yet collected a full line */
ch = text_getch(tw);
switch(ch) {
case EOF:
case 26: /* ^Z == EOF */
tw->line_eof = TRUE;
tw->line_complete = TRUE;
break;
case '\b': /* ^H */
case 0x7f: /* DEL */
if (tw->line_end) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
#ifndef WINDOWS_NO_UNICODE
while ((tw->line_end) &&
((tw->line_buf[tw->line_end-1] & 0xC0) == 0x80)) {
/* It's a UTF-8 continuation char. */
--(tw->line_end);
}
if (tw->line_end == 0)
break;
#endif
--(tw->line_end);
}
break;
case 21: /* ^U */
while (tw->line_end) {
text_putch(tw, '\b');
text_putch(tw, ' ');
text_putch(tw, '\b');
--(tw->line_end);
}
break;
case '\r':
case '\n':
tw->line_complete = TRUE;
/* fall through */
default:
tw->line_buf[tw->line_end++] = ch;
text_putch(tw, ch);
break;
}
if (tw->line_end >= sizeof(tw->line_buf))
tw->line_complete = TRUE;
}
if (tw->quitnow)
return -1;
if (tw->line_complete) {
/* We either filled the buffer or got CR, LF or EOF */
int count = min(len, tw->line_end - tw->line_start);
memcpy(line, tw->line_buf + tw->line_start, count);
tw->line_start += count;
if (tw->line_start == tw->line_end) {
tw->line_start = tw->line_end = 0;
tw->line_complete = FALSE;
}
return count;
}
return 0;
}
