install approved copyright notice

[unix-history] / 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 are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#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   5.3 (Berkeley) %G%";
#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);
}