1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Edward Wang at The University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)wwgets.c 8.1 (Berkeley) 6/6/93 37 * $FreeBSD: src/usr.bin/window/wwgets.c,v 1.3.14.1 2001/05/17 09:45:01 obrien Exp $ 38 * $DragonFly: src/usr.bin/window/wwgets.c,v 1.2 2003/06/17 04:29:34 dillon Exp $ 39 */ 40 41 #include "ww.h" 42 #include "char.h" 43 44 wwgets(buf, n, w) 45 char *buf; 46 int n; 47 register struct ww *w; 48 { 49 register char *p = buf; 50 register int c; 51 char uc = w->ww_unctrl; 52 static void rub(); 53 54 w->ww_unctrl = 0; 55 for (;;) { 56 wwcurtowin(w); 57 while ((c = wwgetc()) < 0) 58 wwiomux(); 59 #ifdef OLD_TTY 60 if (c == wwoldtty.ww_sgttyb.sg_erase) 61 #else 62 if (c == wwoldtty.ww_termios.c_cc[VERASE]) 63 #endif 64 { 65 if (p > buf) 66 rub(*--p, w); 67 } else 68 #ifdef OLD_TTY 69 if (c == wwoldtty.ww_sgttyb.sg_kill) 70 #else 71 if (c == wwoldtty.ww_termios.c_cc[VKILL]) 72 #endif 73 { 74 while (p > buf) 75 rub(*--p, w); 76 } else 77 #ifdef OLD_TTY 78 if (c == wwoldtty.ww_ltchars.t_werasc) 79 #else 80 if (c == wwoldtty.ww_termios.c_cc[VWERASE]) 81 #endif 82 { 83 while (--p >= buf && (*p == ' ' || *p == '\t')) 84 rub(*p, w); 85 while (p >= buf && *p != ' ' && *p != '\t') 86 rub(*p--, w); 87 p++; 88 } else if (c == '\r' || c == '\n') { 89 break; 90 } else { 91 if (p >= buf + n - 1) 92 wwputc(ctrl('g'), w); 93 else 94 if (isctrl(c)) 95 wwputs(unctrl(*p++ = c), w); 96 else 97 wwputc(*p++ = c, w); 98 } 99 } 100 *p = 0; 101 w->ww_unctrl = uc; 102 } 103 104 static void 105 rub(c, w) 106 struct ww *w; 107 { 108 register i; 109 110 for (i = isctrl(c) ? strlen(unctrl(c)) : 1; --i >= 0;) 111 (void) wwwrite(w, "\b \b", 3); 112 } 113