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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 #if 0 32 static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 33 #endif 34 #endif /* not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/types.h> 39 40 #include <err.h> 41 #include <limits.h> 42 #include <stdlib.h> 43 #include <string.h> 44 45 #include "stty.h" 46 #include "extern.h" 47 48 static int c_cchar(const void *, const void *); 49 50 /* 51 * Special control characters. 52 * 53 * Cchars1 are the standard names, cchars2 are the old aliases. 54 * The first are displayed, but both are recognized on the 55 * command line. 56 */ 57 struct cchar cchars1[] = { 58 { "discard", VDISCARD, CDISCARD }, 59 { "dsusp", VDSUSP, CDSUSP }, 60 { "eof", VEOF, CEOF }, 61 { "eol", VEOL, CEOL }, 62 { "eol2", VEOL2, CEOL }, 63 { "erase", VERASE, CERASE }, 64 { "erase2", VERASE2, CERASE2 }, 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, 0, 0}, 78 }; 79 80 struct cchar cchars2[] = { 81 { "brk", VEOL, CEOL }, 82 { "flush", VDISCARD, CDISCARD }, 83 { "rprnt", VREPRINT, CREPRINT }, 84 { NULL, 0, 0 }, 85 }; 86 87 static int 88 c_cchar(const void *a, const void *b) 89 { 90 91 return (strcmp(((const struct cchar *)a)->name, ((const struct cchar *)b)->name)); 92 } 93 94 int 95 csearch(char ***argvp, struct info *ip) 96 { 97 struct cchar *cp, tmp; 98 long val; 99 char *arg, *ep, *name; 100 101 name = **argvp; 102 103 tmp.name = name; 104 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 105 sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), 106 c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars2, 107 sizeof(cchars2)/sizeof(struct cchar) - 1, sizeof(struct cchar), 108 c_cchar))) 109 return (0); 110 111 arg = *++*argvp; 112 if (!arg) { 113 warnx("option requires an argument -- %s", name); 114 usage(); 115 } 116 117 #define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 118 if (CHK("undef") || CHK("<undef>")) 119 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 120 else if (cp->sub == VMIN || cp->sub == VTIME) { 121 val = strtol(arg, &ep, 10); 122 if (val > UCHAR_MAX) { 123 warnx("maximum option value is %d -- %s", 124 UCHAR_MAX, name); 125 usage(); 126 } 127 if (*ep != '\0') { 128 warnx("option requires a numeric argument -- %s", name); 129 usage(); 130 } 131 ip->t.c_cc[cp->sub] = val; 132 } else if (arg[0] == '^') 133 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 134 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 135 else 136 ip->t.c_cc[cp->sub] = arg[0]; 137 ip->set = 1; 138 return (1); 139 } 140