4.4BSD/usr/src/old/vfilters/railmag/railmag.c

/*
 * Copyright (c) 1983 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)railmag.c	5.4 (Berkeley) 6/1/90";
#endif /* not lint */

/*
 * tell vcat which fonts are loaded on the "typesetter"
 */

#define MAGIC_NUMBER 0436
#define RAILMAG_FILE "/usr/lib/vfont/railmag"

char	*concat();
int	rmfd;
char	*rm[4];
char	tbuf[256];

main(argc, argv)
	int argc;
	char *argv[];
{
	register int fnum;
	char cbuf[4][50];

	readrm();
	if (argc <= 1) {
		printrm();
		exit(0);
	}
	while (--argc) {
		argv++;
		fnum = argv[0][0] - '0';
		if (fnum < 1 || fnum > 4)
			error("Invalid font number");
		checkfont(argv[1]);
		if (argv[1][0] == '/')
			rm[fnum-1] = argv[1];
		else
			rm[fnum-1] = concat(cbuf[fnum-1], "/usr/lib/vfont/", argv[1]);
		argv++;	argc--;
	}
	writerm();
}

error(str)
	char *str;
{
	write(2, "Railmag: ", 9);
	write(2, str, strlen(str));
	write(2, "\n", 1);
	exit();
}

checkfont(file)
	char *file;
{
	register int fd;
	char cbuf[80];
	char cbuf2[80];
	short word;

	if ((fd = open(concat(cbuf, file, ".10"), 0)) < 0)
		if ((fd = open(concat(cbuf2, "/usr/lib/vfont/", cbuf), 0)) < 0)
			error("cant open font");
	if (read(fd, &word, 2) != 2)
		error("cant read font");
	if (word != MAGIC_NUMBER)
		error("font has no magic number");
	close(fd);
}

readrm()
{
	register int i;
	register char *cp;
	char c;

	if ((rmfd = open(RAILMAG_FILE, 0)) < 0)
		error("No railmag file");
	cp = tbuf;
	for (i = 0; i < 4; i++) {
		rm[i] = cp;
		while (read(rmfd, &c, 1) == 1 && c != '\n')
			*cp++ = c;
		*cp++ = '\0';
	}
}

printrm()
{
	register int i;

	for (i = 0; i < 4; i++)
		printf("%s on %d\n", rm[i], i+1);
}

writerm()
{
	register int i;
	register char *cp;

	unlink(RAILMAG_FILE);
	if ((rmfd = creat(RAILMAG_FILE, 0644)) < 0)
		error("cant recreate railmag file");
	for (i = 0; i < 4; i++) {
		cp = rm[i];
		while (*cp != '\0')
			write(rmfd, cp++, 1);
		write(rmfd, "\n", 1);
	}
}

char *
concat(outbuf, in1, in2)
	register char *outbuf, *in1, *in2;
{
	char *save;

	save = outbuf;
	while (*in1)
		*outbuf++ = *in1++;
	while (*in2)
		*outbuf++ = *in2++;
	return(save);
}