/*      $NetBSD: asa.c,v 1.17 2016/09/05 00:40:28 sevan Exp $   */

/*
* Copyright (c) 1993,94 Winning Strategies, Inc.
* 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 Winning Strategies, Inc.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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
__RCSID("$NetBSD: asa.c,v 1.17 2016/09/05 00:40:28 sevan Exp $");
#endif

#include <err.h>
#include <stdio.h>
#include <stdlib.h>

static void asa(FILE *);

int
/*ARGSUSED*/
main (int argc, char *argv[])
{
       FILE *fp;

       /* skip progname */
       argv++;

       if (*argv == NULL)
               asa(stdin);
       else
               do {
                       if ((fp = fopen(*argv, "r")) == NULL) {
                               warn("%s", *argv);
                               continue;
                       }
                       asa(fp);
                       (void)fclose(fp);
               } while (*++argv != NULL);

       return 0;
}

static void
asa(FILE *f)
{
       char *buf;
       size_t len;

       if ((buf = fgetln(f, &len)) != NULL) {
               if (len > 0 && buf[len - 1] == '\n')
                       buf[--len] = '\0';
               /* special case the first line */
               switch (buf[0]) {
               case '0':
                       (void)putchar('\n');
                       break;
               case '1':
                       (void)putchar('\f');
                       break;
               }

               if (len > 1 && buf[0] && buf[1])
                       (void)fwrite(buf + 1, 1, len - 1, stdout);

               while ((buf = fgetln(f, &len)) != NULL) {
                       if (len > 0 && buf[len - 1] == '\n')
                               buf[--len] = '\0';
                       switch (buf[0]) {
                       default:
                       case ' ':
                               (void)putchar('\n');
                               break;
                       case '0':
                               (void)putchar('\n');
                               (void)putchar('\n');
                               break;
                       case '1':
                               (void)putchar('\f');
                               break;
                       case '+':
                               (void)putchar('\r');
                               break;
                       }

                       if (len > 1 && buf[0] && buf[1])
                               (void)fwrite(buf + 1, 1, len - 1, stdout);
               }

               (void)putchar('\n');
       }
}