1 /*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $Id$ 34 */ 35 36 #ifndef lint 37 static char const sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 38 #endif /* not lint */ 39 40 #include <sys/types.h> 41 42 #include <err.h> 43 #include <limits.h> 44 #include <stddef.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include "stty.h" 49 #include "extern.h" 50 51 /* 52 * Special control characters. 53 * 54 * Cchars1 are the standard names, cchars2 are the old aliases. 55 * The first are displayed, but both are recognized on the 56 * command line. 57 */ 58 struct cchar cchars1[] = { 59 { "discard", VDISCARD, CDISCARD }, 60 { "dsusp", VDSUSP, CDSUSP }, 61 { "eof", VEOF, CEOF }, 62 { "eol", VEOL, CEOL }, 63 { "eol2", VEOL2, CEOL }, 64 { "erase", VERASE, CERASE }, 65 { "intr", VINTR, CINTR }, 66 { "kill", VKILL, CKILL }, 67 { "lnext", VLNEXT, CLNEXT }, 68 { "min", VMIN, CMIN }, 69 { "quit", VQUIT, CQUIT }, 70 { "reprint", VREPRINT, CREPRINT }, 71 { "start", VSTART, CSTART }, 72 { "status", VSTATUS, CSTATUS }, 73 { "stop", VSTOP, CSTOP }, 74 { "susp", VSUSP, CSUSP }, 75 { "time", VTIME, CTIME }, 76 { "werase", VWERASE, CWERASE }, 77 { NULL }, 78 }; 79 80 struct cchar cchars2[] = { 81 { "brk", VEOL, CEOL }, 82 { "flush", VDISCARD, CDISCARD }, 83 { "rprnt", VREPRINT, CREPRINT }, 84 { NULL }, 85 }; 86 87 static int 88 c_cchar(a, b) 89 const void *a, *b; 90 { 91 92 return (strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name)); 93 } 94 95 int 96 csearch(argvp, ip) 97 char ***argvp; 98 struct info *ip; 99 { 100 struct cchar *cp, tmp; 101 long val; 102 char *arg, *ep, *name; 103 104 name = **argvp; 105 106 tmp.name = name; 107 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 108 sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), 109 c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars2, 110 sizeof(cchars2)/sizeof(struct cchar) - 1, sizeof(struct cchar), 111 c_cchar))) 112 return (0); 113 114 arg = *++*argvp; 115 if (!arg) { 116 warnx("option requires an argument -- %s", name); 117 usage(); 118 } 119 120 #define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 121 if (CHK("undef") || CHK("<undef>")) 122 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 123 else if (cp->sub == VMIN || cp->sub == VTIME) { 124 val = strtol(arg, &ep, 10); 125 if (val > UCHAR_MAX) { 126 warnx("maximum option value is %d -- %s", 127 UCHAR_MAX, name); 128 usage(); 129 } 130 if (*ep != '\0') { 131 warnx("option requires a numeric argument -- %s", name); 132 usage(); 133 } 134 ip->t.c_cc[cp->sub] = val; 135 } else if (arg[0] == '^') 136 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 137 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 138 else 139 ip->t.c_cc[cp->sub] = arg[0]; 140 ip->set = 1; 141 return (1); 142 } 143