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/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)wwgets.c 8.1 (Berkeley) 6/6/93";
static char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include "ww.h"
#include "char.h"
wwgets(buf, n, w)
char *buf;
int n;
register struct ww *w;
{
register char *p = buf;
register int c;
char uc = w->ww_unctrl;
static void rub();
w->ww_unctrl = 0;
for (;;) {
wwcurtowin(w);
while ((c = wwgetc()) < 0)
wwiomux();
#ifdef OLD_TTY
if (c == wwoldtty.ww_sgttyb.sg_erase)
#else
if (c == wwoldtty.ww_termios.c_cc[VERASE])
#endif
{
if (p > buf)
rub(*--p, w);
} else
#ifdef OLD_TTY
if (c == wwoldtty.ww_sgttyb.sg_kill)
#else
if (c == wwoldtty.ww_termios.c_cc[VKILL])
#endif
{
while (p > buf)
rub(*--p, w);
} else
#ifdef OLD_TTY
if (c == wwoldtty.ww_ltchars.t_werasc)
#else
if (c == wwoldtty.ww_termios.c_cc[VWERASE])
#endif
{
while (--p >= buf && (*p == ' ' || *p == '\t'))
rub(*p, w);
while (p >= buf && *p != ' ' && *p != '\t')
rub(*p--, w);
p++;
} else if (c == '\r' || c == '\n') {
break;
} else {
if (p >= buf + n - 1)
wwputc(ctrl('g'), w);
else
if (isctrl(c))
wwputs(unctrl(*p++ = c), w);
else
wwputc(*p++ = c, w);
}
}
*p = 0;
w->ww_unctrl = uc;
}
static void
rub(c, w)
struct ww *w;
{
register i;
for (i = isctrl(c) ? strlen(unctrl(c)) : 1; --i >= 0;)
(void) wwwrite(w, "\b \b", 3);
}
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