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