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 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif /* not lint */ 41 42 #include <sys/types.h> 43 44 #include <err.h> 45 #include <limits.h> 46 #include <stddef.h> 47 #include <stdlib.h> 48 #include <string.h> 49 50 #include "stty.h" 51 #include "extern.h" 52 53 static int c_cchar(const void *, const void *); 54 55 /* 56 * Special control characters. 57 * 58 * Cchars1 are the standard names, cchars2 are the old aliases. 59 * The first are displayed, but both are recognized on the 60 * command line. 61 */ 62 struct cchar cchars1[] = { 63 { "discard", VDISCARD, CDISCARD }, 64 { "dsusp", VDSUSP, CDSUSP }, 65 { "eof", VEOF, CEOF }, 66 { "eol", VEOL, CEOL }, 67 { "eol2", VEOL2, CEOL }, 68 { "erase", VERASE, CERASE }, 69 { "erase2", VERASE2, CERASE2 }, 70 { "intr", VINTR, CINTR }, 71 { "kill", VKILL, CKILL }, 72 { "lnext", VLNEXT, CLNEXT }, 73 { "min", VMIN, CMIN }, 74 { "quit", VQUIT, CQUIT }, 75 { "reprint", VREPRINT, CREPRINT }, 76 { "start", VSTART, CSTART }, 77 { "status", VSTATUS, CSTATUS }, 78 { "stop", VSTOP, CSTOP }, 79 { "susp", VSUSP, CSUSP }, 80 { "time", VTIME, CTIME }, 81 { "werase", VWERASE, CWERASE }, 82 { NULL, 0, 0}, 83 }; 84 85 struct cchar cchars2[] = { 86 { "brk", VEOL, CEOL }, 87 { "flush", VDISCARD, CDISCARD }, 88 { "rprnt", VREPRINT, CREPRINT }, 89 { NULL, 0, 0 }, 90 }; 91 92 static int 93 c_cchar(const void *a, const void *b) 94 { 95 96 return (strcmp(((const struct cchar *)a)->name, ((const struct cchar *)b)->name)); 97 } 98 99 int 100 csearch(char ***argvp, struct info *ip) 101 { 102 struct cchar *cp, tmp; 103 long val; 104 char *arg, *ep, *name; 105 106 name = **argvp; 107 108 tmp.name = name; 109 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 110 sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), 111 c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars2, 112 sizeof(cchars2)/sizeof(struct cchar) - 1, sizeof(struct cchar), 113 c_cchar))) 114 return (0); 115 116 arg = *++*argvp; 117 if (!arg) { 118 warnx("option requires an argument -- %s", name); 119 usage(); 120 } 121 122 #define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 123 if (CHK("undef") || CHK("<undef>")) 124 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 125 else if (cp->sub == VMIN || cp->sub == VTIME) { 126 val = strtol(arg, &ep, 10); 127 if (val > UCHAR_MAX) { 128 warnx("maximum option value is %d -- %s", 129 UCHAR_MAX, name); 130 usage(); 131 } 132 if (*ep != '\0') { 133 warnx("option requires a numeric argument -- %s", name); 134 usage(); 135 } 136 ip->t.c_cc[cp->sub] = val; 137 } else if (arg[0] == '^') 138 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 139 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 140 else 141 ip->t.c_cc[cp->sub] = arg[0]; 142 ip->set = 1; 143 return (1); 144 } 145