1 /* $NetBSD: wwgets.c,v 1.9 2003/08/07 11:17:40 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Edward Wang at The University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwgets.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: wwgets.c,v 1.9 2003/08/07 11:17:40 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include <string.h> 45 #include "ww.h" 46 #include "char.h" 47 48 static void rub(int, struct ww *); 49 50 void 51 wwgets(char *buf, int n, struct ww *w) 52 { 53 char *p = buf; 54 int c; 55 int uc = ISSET(w->ww_wflags, WWW_UNCTRL); 56 57 CLR(w->ww_wflags, WWW_UNCTRL); 58 for (;;) { 59 wwcurtowin(w); 60 while ((c = wwgetc()) < 0) 61 wwiomux(); 62 #ifdef OLD_TTY 63 if (c == wwoldtty.ww_sgttyb.sg_erase) 64 #else 65 if (c == wwoldtty.ww_termios.c_cc[VERASE]) 66 #endif 67 { 68 if (p > buf) 69 rub(*--p, w); 70 } else 71 #ifdef OLD_TTY 72 if (c == wwoldtty.ww_sgttyb.sg_kill) 73 #else 74 if (c == wwoldtty.ww_termios.c_cc[VKILL]) 75 #endif 76 { 77 while (p > buf) 78 rub(*--p, w); 79 } else 80 #ifdef OLD_TTY 81 if (c == wwoldtty.ww_ltchars.t_werasc) 82 #else 83 if (c == wwoldtty.ww_termios.c_cc[VWERASE]) 84 #endif 85 { 86 while (--p >= buf && (*p == ' ' || *p == '\t')) 87 rub(*p, w); 88 while (p >= buf && *p != ' ' && *p != '\t') 89 rub(*p--, w); 90 p++; 91 } else if (c == '\r' || c == '\n') { 92 break; 93 } else { 94 if (p >= buf + n - 1) 95 wwputc(ctrl('g'), w); 96 else 97 wwputs(unctrl(*p++ = c), w); 98 } 99 } 100 *p = 0; 101 SET(w->ww_wflags, uc); 102 } 103 104 static void 105 rub(int c, struct ww *w) 106 { 107 int i; 108 109 for (i = strlen(unctrl(c)); --i >= 0;) 110 (void) wwwrite(w, "\b \b", 3); 111 } 112