svn commit: r327614 - head/usr.bin/morse
Eitan Adler
eadler at FreeBSD.org
Sat Jan 6 07:02:25 UTC 2018
Author: eadler
Date: Sat Jan 6 07:02:24 2018
New Revision: 327614
URL: https://svnweb.freebsd.org/changeset/base/327614
Log:
morse(6): implement support for decoding morse code
- Use `-r` for "reverse" mode and to match DragonFlyBSD.
- Move defines around to clear up logic
- use `errx` instead of `fprintf` and `exit`
PR: 35109
Submitted By: philipp.mergenthaler at stud.uni-karlsruhe.de
Submitted on: 2002-02-19
Reviewed by: kevans
Modified:
head/usr.bin/morse/morse.6
head/usr.bin/morse/morse.c
Modified: head/usr.bin/morse/morse.6
==============================================================================
--- head/usr.bin/morse/morse.6 Sat Jan 6 06:34:49 2018 (r327613)
+++ head/usr.bin/morse/morse.6 Sat Jan 6 07:02:24 2018 (r327614)
@@ -92,6 +92,11 @@ Echo each character before it is sent, used together w
.Fl p
or
.Fl d .
+.It Fl D
+Decode morse output consisting of dots and dashes (as generated by using
+the
+.Fl s
+option).
.El
.Pp
The
Modified: head/usr.bin/morse/morse.c
==============================================================================
--- head/usr.bin/morse/morse.c Sat Jan 6 06:34:49 2018 (r327613)
+++ head/usr.bin/morse/morse.c Sat Jan 6 07:02:24 2018 (r327614)
@@ -46,6 +46,7 @@ static const char rcsid[] =
#include <sys/ioctl.h>
#include <ctype.h>
+#include <err.h>
#include <fcntl.h>
#include <langinfo.h>
#include <locale.h>
@@ -59,6 +60,9 @@ static const char rcsid[] =
/* Always use the speaker, let the open fail if -p is selected */
#define SPEAKER "/dev/speaker"
+#define WHITESPACE " \t\n"
+#define DELIMITERS " \t"
+
#ifdef SPEAKER
#include <dev/speaker/speaker.h>
#endif
@@ -267,14 +271,11 @@ static const struct morsetab koi8rtab[] = {
};
static void show(const char *), play(const char *), morse(char);
+static void decode (char *), fdecode(FILE *);
static void ttyout(const char *);
static void sighandler(int);
-#define GETOPTOPTS "c:d:ef:lsw:"
-#define USAGE \
-"usage: morse [-els] [-d device] [-w speed] [-c speed] [-f frequency] [string ...]\n"
-
-static int pflag, lflag, sflag, eflag;
+static int pflag, lflag, rflag, sflag, eflag;
static int wpm = 20; /* effective words per minute */
static int cpm; /* effective words per minute between
* characters */
@@ -293,11 +294,14 @@ static int olflags;
#ifdef SPEAKER
static tone_t sound;
-#undef GETOPTOPTS
-#define GETOPTOPTS "c:d:ef:lpsw:"
-#undef USAGE
+#define GETOPTOPTS "c:d:ef:lprsw:"
#define USAGE \
-"usage: morse [-elps] [-d device] [-w speed] [-c speed] [-f frequency] [string ...]\n"
+"usage: morse [-elprs] [-d device] [-w speed] [-c speed] [-f frequency] [string ...]\n"
+#else
+#define GETOPTOPTS "c:d:ef:lrsw:"
+#define USAGE \
+"usage: morse [-elrs] [-d device] [-w speed] [-c speed] [-f frequency] [string ...]\n"
+
#endif
static const struct morsetab *hightab;
@@ -331,6 +335,9 @@ main(int argc, char **argv)
pflag = 1;
break;
#endif
+ case 'r':
+ rflag = 1;
+ break;
case 's':
sflag = 1;
break;
@@ -339,42 +346,36 @@ main(int argc, char **argv)
break;
case '?':
default:
- fputs(USAGE, stderr);
- exit(1);
+ errx(1, USAGE);
}
- if (sflag && lflag) {
- fputs("morse: only one of -l and -s allowed\n", stderr);
- exit(1);
+ if ((sflag && lflag) || (sflag && rflag) || (lflag && rflag)) {
+ errx(1, "morse: only one of -l, -s, and -r allowed\n");
}
if ((pflag || device) && (sflag || lflag)) {
- fputs("morse: only one of -p, -d and -l, -s allowed\n", stderr);
- exit(1);
+ errx(1, "morse: only one of -p, -d and -l, -s allowed\n");
}
- if (cpm == 0)
+ if (cpm == 0) {
cpm = wpm;
+ }
if ((pflag || device) && ((wpm < 1) || (wpm > 60) || (cpm < 1) || (cpm > 60))) {
- fputs("morse: insane speed\n", stderr);
- exit(1);
+ errx(1, "morse: insane speed\n");
}
- if ((pflag || device) && (freq == 0))
+ if ((pflag || device) && (freq == 0)) {
freq = FREQUENCY;
-
+ }
#ifdef SPEAKER
if (pflag) {
if ((spkr = open(SPEAKER, O_WRONLY, 0)) == -1) {
- perror(SPEAKER);
- exit(1);
+ err(1, SPEAKER);
}
} else
#endif
if (device) {
if ((line = open(device, O_WRONLY | O_NONBLOCK)) == -1) {
- perror("open tty line");
- exit(1);
+ err(1, "open tty line");
}
if (tcgetattr(line, &otty) == -1) {
- perror("tcgetattr() failed");
- exit(1);
+ err(1, "tcgetattr() failed");
}
ntty = otty;
ntty.c_cflag |= CLOCAL;
@@ -419,9 +420,29 @@ main(int argc, char **argv)
hightab = iso8859_7tab;
}
- if (lflag)
+ if (lflag) {
printf("m");
- if (*argv) {
+ }
+ if (rflag) {
+ if (*argv) {
+ do {
+ p = strtok(*argv, DELIMITERS);
+ if (p == NULL) {
+ decode(*argv);
+ }
+ else {
+ while (p) {
+ decode(p);
+ p = strtok(NULL, DELIMITERS);
+ }
+ }
+ } while (*++argv);
+ putchar('\n');
+ } else {
+ fdecode(stdin);
+ }
+ }
+ else if (*argv) {
do {
for (p = *argv; *p; ++p) {
if (eflag)
@@ -518,15 +539,13 @@ play(const char *s)
}
if (sound.duration) {
if (ioctl(spkr, SPKRTONE, &sound) == -1) {
- perror("ioctl play");
- exit(1);
+ err(1, "ioctl play");
}
}
sound.frequency = 0;
sound.duration = dot_clock;
if (ioctl(spkr, SPKRTONE, &sound) == -1) {
- perror("ioctl rest");
- exit(1);
+ err(1, "ioctl rest");
}
}
sound.frequency = 0;
@@ -575,6 +594,68 @@ ttyout(const char *s)
}
duration = cdot_clock * CHAR_SPACE * 10000;
usleep(duration);
+}
+
+void
+fdecode(FILE *stream)
+{
+ char *n, *p, *s;
+ char buf[BUFSIZ];
+
+ s = buf;
+ while (fgets(s, BUFSIZ - (s - buf), stdin)) {
+ p = buf;
+
+ while (*p && isblank(*p)) {
+ p++;
+ }
+ while (*p && isspace(*p)) {
+ p++;
+ putchar (' ');
+ }
+ while (*p) {
+ n = strpbrk(p, WHITESPACE);
+ if (n == NULL) {
+ /* The token was interrupted at the end
+ * of the buffer. Shift it to the begin
+ * of the buffer.
+ */
+ for (s = buf; *p; *s++ = *p++)
+ ;
+ } else {
+ *n = '\0';
+ n++;
+ decode(p);
+ p = n;
+ }
+ }
+ }
+ putchar('\n');
+}
+
+void
+decode(char *p)
+{
+ char c;
+ const struct morsetab *m;
+
+ c = ' ';
+ for (m = mtab; m != NULL && m->inchar != '\0'; m++) {
+ if (strcmp(m->morse, p) == 0) {
+ c = m->inchar;
+ break;
+ }
+ }
+
+ if (c == ' ')
+ for (m = hightab; m != NULL && m->inchar != '\0'; m++) {
+ if (strcmp(m->morse, p) == 0) {
+ c = m->inchar;
+ break;
+ }
+ }
+
+ putchar(c);
}
static void
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