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File: [cvs.NetBSD.org] / src / usr.bin / tset / map.c (download)

Revision 1.13, Tue Sep 6 18:34:12 2011 UTC (8 years, 6 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, localcount-20160914, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver, HEAD
Changes since 1.12: +8 -12 lines

ANSIfy. Sprinkle static and __dead.

/*	$NetBSD: map.c,v 1.13 2011/09/06 18:34:12 joerg Exp $	*/

/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)map.c	8.1 (Berkeley) 6/9/93";
#endif
__RCSID("$NetBSD: map.c,v 1.13 2011/09/06 18:34:12 joerg Exp $");
#endif /* not lint */

#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <term.h>
#include <termios.h>
#include "extern.h"

static int	baudrate(char *);

/* Baud rate conditionals for mapping. */
#define	GT		0x01
#define	EQ		0x02
#define	LT		0x04
#define	NOT		0x08
#define	GE		(GT | EQ)
#define	LE		(LT | EQ)

typedef struct map {
	struct map *next;	/* Linked list of maps. */
	const char *porttype;	/* Port type, or "" for any. */
	const char *type;	/* Terminal type to select. */
	int conditional;	/* Baud rate conditionals bitmask. */
	int speed;		/* Baud rate to compare against. */
} MAP;

static MAP *cur, *maplist;

/*
 * Syntax for -m:
 * [port-type][test baudrate]:terminal-type
 * The baud rate tests are: >, <, @, =, !
 */
void
add_mapping(const char *port, char *arg)
{
	MAP *mapp;
	char *copy, *p, *termp;

	copy = strdup(arg);
	mapp = malloc((u_int)sizeof(MAP));
	if (copy == NULL || mapp == NULL)
		err(1, "malloc");
	mapp->next = NULL;
	if (maplist == NULL)
		cur = maplist = mapp;
	else {
		cur->next = mapp;
		cur =  mapp;
	}

	mapp->porttype = arg;
	mapp->conditional = 0;

	arg = strpbrk(arg, "><@=!:");

	if (arg == NULL) {			/* [?]term */
		mapp->type = mapp->porttype;
		mapp->porttype = NULL;
		goto done;
	}

	if (arg == mapp->porttype)		/* [><@=! baud]:term */
		mapp->porttype = termp = NULL;
	else
		termp = arg;

	for (;; ++arg)				/* Optional conditionals. */
		switch(*arg) {
		case '<':
			if (mapp->conditional & GT)
				goto badmopt;
			mapp->conditional |= LT;
			break;
		case '>':
			if (mapp->conditional & LT)
				goto badmopt;
			mapp->conditional |= GT;
			break;
		case '@':
		case '=':			/* Not documented. */
			mapp->conditional |= EQ;
			break;
		case '!':
			mapp->conditional |= NOT;
			break;
		default:
			goto next;
		}

next:	if (*arg == ':') {
		if (mapp->conditional)
			goto badmopt;
		++arg;
	} else {				/* Optional baudrate. */
		arg = strchr(p = arg, ':');
		if (arg == NULL)
			goto badmopt;
		*arg++ = '\0';
		mapp->speed = baudrate(p);
	}

	if (*arg == '\0')			/* Non-optional type. */
		goto badmopt;

	mapp->type = arg;

	/* Terminate porttype, if specified. */
	if (termp != NULL)
		*termp = '\0';

	/* If a NOT conditional, reverse the test. */
	if (mapp->conditional & NOT)
		mapp->conditional = ~mapp->conditional & (EQ | GT | LT);

	/* If user specified a port with an option flag, set it. */
done:	if (port) {
		if (mapp->porttype)
badmopt:		errx(1, "illegal -m option format: %s", copy);
		mapp->porttype = port;
	}

#ifdef MAPDEBUG
	(void)printf("port: %s\n", mapp->porttype ? mapp->porttype : "ANY");
	(void)printf("type: %s\n", mapp->type);
	(void)printf("conditional: ");
	p = "";
	if (mapp->conditional & GT) {
		(void)printf("GT");
		p = "/";
	}
	if (mapp->conditional & EQ) {
		(void)printf("%sEQ", p);
		p = "/";
	}
	if (mapp->conditional & LT)
		(void)printf("%sLT", p);
	(void)printf("\nspeed: %d\n", mapp->speed);
#endif
	free(copy);
}

/*
 * Return the type of terminal to use for a port of type 'type', as specified
 * by the first applicable mapping in 'map'.  If no mappings apply, return
 * 'type'.
 */
const char *
mapped(const char *type)
{
	MAP *mapp;
	int match;

	match = 0;
	for (mapp = maplist; mapp; mapp = mapp->next)
		if (mapp->porttype == NULL || !strcmp(mapp->porttype, type)) {
			switch (mapp->conditional) {
			case 0:			/* No test specified. */
				match = 1;
				break;
			case EQ:
				match = (ospeed == mapp->speed);
				break;
			case GE:
				match = (ospeed >= mapp->speed);
				break;
			case GT:
				match = (ospeed > mapp->speed);
				break;
			case LE:
				match = (ospeed <= mapp->speed);
				break;
			case LT:
				match = (ospeed < mapp->speed);
				break;
			}
			if (match)
				return (mapp->type);
		}
	/* No match found; return given type. */
	return (type);
}

static int
baudrate(char *rate)
{

	/* The baudrate number can be preceded by a 'B', which is ignored. */
	if (*rate == 'B')
		++rate;

	return (atoi(rate));
}