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morse.c revision 1.2 
      1 /*
      2  * Copyright (c) 1988 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 char copyright[] =
     36 "@(#) Copyright (c) 1988 Regents of the University of California.\n\
     37  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 /*static char sccsid[] = "from: @(#)morse.c	5.3 (Berkeley) 2/28/91";*/
     42 static char rcsid[] = "$Id: morse.c,v 1.2 1993/08/01 18:53:21 mycroft Exp $";
     43 #endif /* not lint */
     44 
     45 #include <stdio.h>
     46 #include <ctype.h>
     47 
     48 static char
     49 	*digit[] = {
     50 	"-----",
     51 	".----",
     52 	"..---",
     53 	"...--",
     54 	"....-",
     55 	".....",
     56 	"-....",
     57 	"--...",
     58 	"---..",
     59 	"----.",
     60 },
     61 	*alph[] = {
     62 	".-",
     63 	"-...",
     64 	"-.-.",
     65 	"-..",
     66 	".",
     67 	"..-.",
     68 	"--.",
     69 	"....",
     70 	"..",
     71 	".---",
     72 	"-.-",
     73 	".-..",
     74 	"--",
     75 	"-.",
     76 	"---",
     77 	".--.",
     78 	"--.-",
     79 	".-.",
     80 	"...",
     81 	"-",
     82 	"..-",
     83 	"...-",
     84 	".--",
     85 	"-..-",
     86 	"-.--",
     87 	"--..",
     88 };
     89 
     90 static int sflag;
     91 
     92 main(argc, argv)
     93 	int argc;
     94 	char **argv;
     95 {
     96 	extern char *optarg;
     97 	extern int optind;
     98 	register int ch;
     99 	register char *p;
    100 
    101 	while ((ch = getopt(argc, argv, "s")) != EOF)
    102 		switch((char)ch) {
    103 		case 's':
    104 			sflag = 1;
    105 			break;
    106 		case '?':
    107 		default:
    108 			fprintf(stderr, "usage: morse [string ...]");
    109 			exit(1);
    110 		}
    111 	argc -= optind;
    112 	argv += optind;
    113 
    114 	if (*argv)
    115 		do {
    116 			for (p = *argv; *p; ++p)
    117 				morse((int)*p);
    118 		} while (*++argv);
    119 	else while ((ch = getchar()) != EOF)
    120 		morse(ch);
    121 }
    122 
    123 morse(c)
    124 	register int c;
    125 {
    126 	if (isalpha(c))
    127 		show(alph[c - (isupper(c) ? 'A' : 'a')]);
    128 	else if (isdigit(c))
    129 		show(digit[c - '0']);
    130 	else if (c == ',')
    131 		show("--..--");
    132 	else if (c == '.')
    133 		show(".-.-.-");
    134 	else if (isspace(c))
    135 		show(" ...\n");
    136 }
    137 
    138 show(s)
    139 	register char *s;
    140 {
    141 	if (sflag)
    142 		printf(" %s", s);
    143 	else for (; *s; ++s)
    144 		printf(" %s", *s == '.' ? "dit" : "daw");
    145 	printf(",\n");
    146 }
    147