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- /*
- * Copyright (c) 1983 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 3.17 (Berkeley) 3/2/91";
- #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 char 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
- wwputs(unctrl(*p++ = c), w);
- }
- }
- *p = 0;
- w->ww_unctrl = uc;
- }
-
- static void
- rub(c, w)
- struct ww *w;
- {
- register i;
-
- for (i = strlen(unctrl(c)); --i >= 0;)
- (void) wwwrite(w, "\b \b", 3);
- }
-