-/* $NetBSD: morse.c,v 1.3 1995/03/23 08:35:24 cgd Exp $ */
+/* $NetBSD: morse.c,v 1.18 2018/01/16 06:20:24 maya Exp $ */
/*
* Copyright (c) 1988, 1993
* 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 the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* SUCH DAMAGE.
*/
+#include <sys/cdefs.h>
#ifndef lint
-static char copyright[] =
-"@(#) Copyright (c) 1988, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
+__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
+ The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)morse.c 8.1 (Berkeley) 5/31/93";
#else
-static char rcsid[] = "$NetBSD: morse.c,v 1.3 1995/03/23 08:35:24 cgd Exp $";
+__RCSID("$NetBSD: morse.c,v 1.18 2018/01/16 06:20:24 maya Exp $");
#endif
#endif /* not lint */
-#include <stdio.h>
#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
-static char
- *digit[] = {
+static const char
+ *const digit[] = {
"-----",
".----",
"..---",
"---..",
"----.",
},
- *alph[] = {
+ *const alph[] = {
".-",
"-...",
"-.-.",
"--..",
};
+static const struct punc {
+ char c;
+ const char *morse;
+} other[] = {
+ { '.', ".-.-.-" },
+ { ',', "--..--" },
+ { ':', "---..." },
+ { '?', "..--.." },
+ { '\'', ".----." },
+ { '-', "-....-" },
+ { '/', "-..-." },
+ { '(', "-.--." },
+ { ')', "-.--.-" },
+ { '"', ".-..-." },
+ { '=', "-...-" },
+ { '+', ".-.-." },
+ { '_', "..--.-" },
+ { '\0', NULL }
+};
+
+int main(int, char *[]);
+static void morse(int);
+static void decode(const char *);
+static void show(const char *);
+
static int sflag;
+static int dflag;
-main(argc, argv)
- int argc;
- char **argv;
+int
+main(int argc, char **argv)
{
- extern char *optarg;
- extern int optind;
- register int ch;
- register char *p;
+ int ch;
+ char *p;
- while ((ch = getopt(argc, argv, "s")) != EOF)
+ /* Revoke setgid privileges */
+ setgid(getgid());
+
+ while ((ch = getopt(argc, argv, "ds")) != -1)
switch((char)ch) {
+ case 'd':
+ dflag = 1;
+ break;
case 's':
sflag = 1;
break;
case '?':
default:
- fprintf(stderr, "usage: morse [string ...]");
+ fprintf(stderr, "usage: morse [-ds] [string ...]\n");
exit(1);
}
argc -= optind;
argv += optind;
- if (*argv)
- do {
- for (p = *argv; *p; ++p)
- morse((int)*p);
- } while (*++argv);
- else while ((ch = getchar()) != EOF)
- morse(ch);
+ if (dflag) {
+ if (*argv) {
+ do {
+ decode(*argv);
+ } while (*++argv);
+ } else {
+ char foo[10]; /* All morse chars shorter than this */
+ int is_blank, i;
+
+ i = 0;
+ is_blank = 0;
+ while ((ch = getchar()) != EOF) {
+ if (ch == '-' || ch == '.') {
+ foo[i++] = ch;
+ if (i == 10) {
+ /* overrun means gibberish--print 'x' and
+ * advance */
+ i = 0;
+ putchar('x');
+ while ((ch = getchar()) != EOF &&
+ (ch == '.' || ch == '-'))
+ ;
+ is_blank = 1;
+ }
+ } else if (i) {
+ foo[i] = '\0';
+ decode(foo);
+ i = 0;
+ is_blank = 0;
+ } else if (isspace(ch)) {
+ if (is_blank) {
+ /* print whitespace for each double blank */
+ putchar(' ');
+ is_blank = 0;
+ } else
+ is_blank = 1;
+ }
+ }
+ }
+ putchar('\n');
+ } else {
+ if (*argv)
+ do {
+ for (p = *argv; *p; ++p)
+ morse((int)*p);
+ show("");
+ } while (*++argv);
+ else while ((ch = getchar()) != EOF)
+ morse(ch);
+ show("...-.-"); /* SK */
+ }
+
+ return 0;
}
-morse(c)
- register int c;
+void
+decode(const char *s)
{
+ int i;
+
+ for (i = 0; i < 10; i++)
+ if (strcmp(digit[i], s) == 0) {
+ putchar('0' + i);
+ return;
+ }
+
+ for (i = 0; i < 26; i++)
+ if (strcmp(alph[i], s) == 0) {
+ putchar('A' + i);
+ return;
+ }
+ i = 0;
+ while (other[i].c) {
+ if (strcmp(other[i].morse, s) == 0) {
+ putchar(other[i].c);
+ return;
+ }
+ i++;
+ }
+ if (strcmp("...-.-", s) == 0)
+ return;
+ putchar('x'); /* line noise */
+}
+
+void
+morse(int c)
+{
+ int i;
+
if (isalpha(c))
show(alph[c - (isupper(c) ? 'A' : 'a')]);
else if (isdigit(c))
show(digit[c - '0']);
- else if (c == ',')
- show("--..--");
- else if (c == '.')
- show(".-.-.-");
else if (isspace(c))
- show(" ...\n");
+ show(""); /* could show BT for a pause */
+ else {
+ i = 0;
+ while (other[i].c) {
+ if (other[i].c == c) {
+ show(other[i].morse);
+ break;
+ }
+ i++;
+ }
+ }
}
-show(s)
- register char *s;
+void
+show(const char *s)
{
if (sflag)
printf(" %s", s);
else for (; *s; ++s)
printf(" %s", *s == '.' ? "dit" : "daw");
- printf(",\n");
+ printf("\n");
}
git.ckatri.com / bsdgames-darwin.git / blobdiff