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 1.3 2005/05/07 23:20:43 corecode Exp $ 39 */ 40 41 #include "ww.h" 42 #include "char.h" 43 44 static void rub(int, struct ww *); 45 46 wwgets(buf, n, w) 47 char *buf; 48 int n; 49 register struct ww *w; 50 { 51 register char *p = buf; 52 register int c; 53 char uc = w->ww_unctrl; 54 55 w->ww_unctrl = 0; 56 for (;;) { 57 wwcurtowin(w); 58 while ((c = wwgetc()) < 0) 59 wwiomux(); 60 #ifdef OLD_TTY 61 if (c == wwoldtty.ww_sgttyb.sg_erase) 62 #else 63 if (c == wwoldtty.ww_termios.c_cc[VERASE]) 64 #endif 65 { 66 if (p > buf) 67 rub(*--p, w); 68 } else 69 #ifdef OLD_TTY 70 if (c == wwoldtty.ww_sgttyb.sg_kill) 71 #else 72 if (c == wwoldtty.ww_termios.c_cc[VKILL]) 73 #endif 74 { 75 while (p > buf) 76 rub(*--p, w); 77 } else 78 #ifdef OLD_TTY 79 if (c == wwoldtty.ww_ltchars.t_werasc) 80 #else 81 if (c == wwoldtty.ww_termios.c_cc[VWERASE]) 82 #endif 83 { 84 while (--p >= buf && (*p == ' ' || *p == '\t')) 85 rub(*p, w); 86 while (p >= buf && *p != ' ' && *p != '\t') 87 rub(*p--, w); 88 p++; 89 } else if (c == '\r' || c == '\n') { 90 break; 91 } else { 92 if (p >= buf + n - 1) 93 wwputc(ctrl('g'), w); 94 else 95 if (isctrl(c)) 96 wwputs(unctrl(*p++ = c), w); 97 else 98 wwputc(*p++ = c, w); 99 } 100 } 101 *p = 0; 102 w->ww_unctrl = uc; 103 } 104 105 static void 106 rub(c, w) 107 struct ww *w; 108 { 109 register i; 110 111 for (i = isctrl(c) ? strlen(unctrl(c)) : 1; --i >= 0;) 112 (void) wwwrite(w, "\b \b", 3); 113 } 114