Annotation of src/usr.bin/tset/map.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc Exp $ */
! 2:
! 3: /*-
! 4: * Copyright (c) 1991, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: #if 0
! 38: static char sccsid[] = "@(#)map.c 8.1 (Berkeley) 6/9/93";
! 39: #endif
! 40: static char rcsid[] = "$NetBSD: map.c,v 1.4 1994/12/07 05:08:07 jtc Exp $";
! 41: #endif /* not lint */
! 42:
! 43: #include <sys/types.h>
! 44: #include <termios.h>
! 45: #include <errno.h>
! 46: #include <stdlib.h>
! 47: #include <string.h>
! 48: #include "extern.h"
! 49:
! 50: int baudrate __P((char *));
! 51:
! 52: /* Baud rate conditionals for mapping. */
! 53: #define GT 0x01
! 54: #define EQ 0x02
! 55: #define LT 0x04
! 56: #define NOT 0x08
! 57: #define GE (GT | EQ)
! 58: #define LE (LT | EQ)
! 59:
! 60: typedef struct map {
! 61: struct map *next; /* Linked list of maps. */
! 62: char *porttype; /* Port type, or "" for any. */
! 63: char *type; /* Terminal type to select. */
! 64: int conditional; /* Baud rate conditionals bitmask. */
! 65: int speed; /* Baud rate to compare against. */
! 66: } MAP;
! 67:
! 68: MAP *cur, *maplist;
! 69:
! 70: /*
! 71: * Syntax for -m:
! 72: * [port-type][test baudrate]:terminal-type
! 73: * The baud rate tests are: >, <, @, =, !
! 74: */
! 75: void
! 76: add_mapping(port, arg)
! 77: char *port, *arg;
! 78: {
! 79: MAP *mapp;
! 80: char *copy, *p, *termp;
! 81:
! 82: copy = strdup(arg);
! 83: mapp = malloc((u_int)sizeof(MAP));
! 84: if (copy == NULL || mapp == NULL)
! 85: err("%s", strerror(errno));
! 86: mapp->next = NULL;
! 87: if (maplist == NULL)
! 88: cur = maplist = mapp;
! 89: else {
! 90: cur->next = mapp;
! 91: cur = mapp;
! 92: }
! 93:
! 94: mapp->porttype = arg;
! 95: mapp->conditional = 0;
! 96:
! 97: arg = strpbrk(arg, "><@=!:");
! 98:
! 99: if (arg == NULL) { /* [?]term */
! 100: mapp->type = mapp->porttype;
! 101: mapp->porttype = NULL;
! 102: goto done;
! 103: }
! 104:
! 105: if (arg == mapp->porttype) /* [><@=! baud]:term */
! 106: termp = mapp->porttype = NULL;
! 107: else
! 108: termp = arg;
! 109:
! 110: for (;; ++arg) /* Optional conditionals. */
! 111: switch(*arg) {
! 112: case '<':
! 113: if (mapp->conditional & GT)
! 114: goto badmopt;
! 115: mapp->conditional |= LT;
! 116: break;
! 117: case '>':
! 118: if (mapp->conditional & LT)
! 119: goto badmopt;
! 120: mapp->conditional |= GT;
! 121: break;
! 122: case '@':
! 123: case '=': /* Not documented. */
! 124: mapp->conditional |= EQ;
! 125: break;
! 126: case '!':
! 127: mapp->conditional |= NOT;
! 128: break;
! 129: default:
! 130: goto next;
! 131: }
! 132:
! 133: next: if (*arg == ':') {
! 134: if (mapp->conditional)
! 135: goto badmopt;
! 136: ++arg;
! 137: } else { /* Optional baudrate. */
! 138: arg = index(p = arg, ':');
! 139: if (arg == NULL)
! 140: goto badmopt;
! 141: *arg++ = '\0';
! 142: mapp->speed = baudrate(p);
! 143: }
! 144:
! 145: if (*arg == NULL) /* Non-optional type. */
! 146: goto badmopt;
! 147:
! 148: mapp->type = arg;
! 149:
! 150: /* Terminate porttype, if specified. */
! 151: if (termp != NULL)
! 152: *termp = '\0';
! 153:
! 154: /* If a NOT conditional, reverse the test. */
! 155: if (mapp->conditional & NOT)
! 156: mapp->conditional = ~mapp->conditional & (EQ | GT | LT);
! 157:
! 158: /* If user specified a port with an option flag, set it. */
! 159: done: if (port) {
! 160: if (mapp->porttype)
! 161: badmopt: err("illegal -m option format: %s", copy);
! 162: mapp->porttype = port;
! 163: }
! 164:
! 165: #ifdef MAPDEBUG
! 166: (void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY");
! 167: (void)printf("type: %s\n", mapp->type);
! 168: (void)printf("conditional: ");
! 169: p = "";
! 170: if (mapp->conditional & GT) {
! 171: (void)printf("GT");
! 172: p = "/";
! 173: }
! 174: if (mapp->conditional & EQ) {
! 175: (void)printf("%sEQ", p);
! 176: p = "/";
! 177: }
! 178: if (mapp->conditional & LT)
! 179: (void)printf("%sLT", p);
! 180: (void)printf("\nspeed: %d\n", mapp->speed);
! 181: #endif
! 182: }
! 183:
! 184: /*
! 185: * Return the type of terminal to use for a port of type 'type', as specified
! 186: * by the first applicable mapping in 'map'. If no mappings apply, return
! 187: * 'type'.
! 188: */
! 189: char *
! 190: mapped(type)
! 191: char *type;
! 192: {
! 193: MAP *mapp;
! 194: int match;
! 195:
! 196: for (mapp = maplist; mapp; mapp = mapp->next)
! 197: if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) {
! 198: switch (mapp->conditional) {
! 199: case 0: /* No test specified. */
! 200: match = 1;
! 201: break;
! 202: case EQ:
! 203: match = (ospeed == mapp->speed);
! 204: break;
! 205: case GE:
! 206: match = (ospeed >= mapp->speed);
! 207: break;
! 208: case GT:
! 209: match = (ospeed > mapp->speed);
! 210: break;
! 211: case LE:
! 212: match = (ospeed <= mapp->speed);
! 213: break;
! 214: case LT:
! 215: match = (ospeed < mapp->speed);
! 216: break;
! 217: }
! 218: if (match)
! 219: return (mapp->type);
! 220: }
! 221: /* No match found; return given type. */
! 222: return (type);
! 223: }
! 224:
! 225: int
! 226: baudrate(rate)
! 227: char *rate;
! 228: {
! 229:
! 230: /* The baudrate number can be preceded by a 'B', which is ignored. */
! 231: if (*rate == 'B')
! 232: ++rate;
! 233:
! 234: return (atoi(rate));
! 235: }
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