usr.bin/asa/asa.c

   1 /*      $NetBSD: asa.c,v 1.15 2002/05/30 00:34:06 enami Exp $   */
   2
   3 /*
   4  * Copyright (c) 1993,94 Winning Strategies, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Winning Strategies, Inc.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 #ifndef lint
  35 __RCSID("$NetBSD: asa.c,v 1.15 2002/05/30 00:34:06 enami Exp $");
  36 #endif
  37
  38 #include <err.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41
  42 static void asa(FILE *);
  43 int main(int, char *[]);
  44
  45 int
  46 /*ARGSUSED*/
  47 main (int argc, char *argv[])
  48 {
  49         FILE *fp;
  50
  51         /* skip progname */
  52         argv++;
  53
  54         if (*argv == NULL)
  55                 asa(stdin);
  56         else
  57                 do {
  58                         if ((fp = fopen(*argv, "r")) == NULL) {
  59                                 warn("%s", *argv);
  60                                 continue;
  61                         }
  62                         asa(fp);
  63                         (void)fclose(fp);
  64                 } while (*++argv != NULL);
  65
  66         return 0;
  67 }
  68
  69 static void
  70 asa(FILE *f)
  71 {
  72         char *buf;
  73         size_t len;
  74
  75         if ((buf = fgetln(f, &len)) != NULL) {
  76                 if (len > 0 && buf[len - 1] == '\n')
  77                         buf[--len] = '\0';
  78                 /* special case the first line */
  79                 switch (buf[0]) {
  80                 case '0':
  81                         (void)putchar('\n');
  82                         break;
  83                 case '1':
  84                         (void)putchar('\f');
  85                         break;
  86                 }
  87
  88                 if (len > 1 && buf[0] && buf[1])
  89                         (void)fwrite(buf + 1, 1, len - 1, stdout);
  90
  91                 while ((buf = fgetln(f, &len)) != NULL) {
  92                         if (len > 0 && buf[len - 1] == '\n')
  93                                 buf[--len] = '\0';
  94                         switch (buf[0]) {
  95                         default:
  96                         case ' ':
  97                                 (void)putchar('\n');
  98                                 break;
  99                         case '0':
 100                                 (void)putchar('\n');
 101                                 (void)putchar('\n');
 102                                 break;
 103                         case '1':
 104                                 (void)putchar('\f');
 105                                 break;
 106                         case '+':
 107                                 (void)putchar('\r');
 108                                 break;
 109                         }
 110
 111                         if (len > 1 && buf[0] && buf[1])
 112                                 (void)fwrite(buf + 1, 1, len - 1, stdout);
 113                 }
 114
 115                 (void)putchar('\n');
 116         }
 117 }