first cut at real Jewish calendar

[unix-history] / usr / src / usr.bin / soelim / soelim.c

/*
* Copyright (c) 1980 The 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) 1980 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)soelim.c    5.2 (Berkeley) %G%";
#endif /* not lint */

#include <stdio.h>
/*
* soelim - a filter to process n/troff input eliminating .so's
*
* Author: Bill Joy UCB July 8, 1977
*
* This program eliminates .so's from a n/troff input stream.
* It can be used to prepare safe input for submission to the
* phototypesetter since the software supporting the operator
* doesn't let him do chdir.
*
* This is a kludge and the operator should be given the
* ability to do chdir.
*
* This program is more generally useful, it turns out, because
* the program tbl doesn't understand ".so" directives.
*/
#define STDIN_NAME      "-"

main(argc, argv)
       int argc;
       char *argv[];
{

       argc--;
       argv++;
       if (argc == 0) {
               (void)process(STDIN_NAME);
               exit(0);
       }
       do {
               (void)process(argv[0]);
               argv++;
               argc--;
       } while (argc > 0);
       exit(0);
}

int process(file)
       char *file;
{
       register char *cp;
       register int c;
       char fname[BUFSIZ];
       FILE *soee;
       int isfile;

       if (!strcmp(file, STDIN_NAME)) {
               soee = stdin;
       } else {
               soee = fopen(file, "r");
               if (soee == NULL) {
                       perror(file);
                       return(-1);
               }
       }
       for (;;) {
               c = getc(soee);
               if (c == EOF)
                       break;
               if (c != '.')
                       goto simple;
               c = getc(soee);
               if (c != 's') {
                       putchar('.');
                       goto simple;
               }
               c = getc(soee);
               if (c != 'o') {
                       printf(".s");
                       goto simple;
               }
               do
                       c = getc(soee);
               while (c == ' ' || c == '\t');
               cp = fname;
               isfile = 0;
               for (;;) {
                       switch (c) {

                       case ' ':
                       case '\t':
                       case '\n':
                       case EOF:
                               goto donename;

                       default:
                               *cp++ = c;
                               c = getc(soee);
                               isfile++;
                               continue;
                       }
               }
donename:
               if (cp == fname) {
                       printf(".so");
                       goto simple;
               }
               *cp = 0;
               if (process(fname) < 0)
                       if (isfile)
                               printf(".so %s\n", fname);
               continue;
simple:
               if (c == EOF)
                       break;
               putchar(c);
               if (c != '\n') {
                       c = getc(soee);
                       goto simple;
               }
       }
       if (soee != stdin) {
               fclose(soee);
       }
       return(0);
}