Page MenuHomeFreeBSD

D35776.diff
No OneTemporary

D35776.diff

diff --git a/usr.bin/Makefile b/usr.bin/Makefile
--- a/usr.bin/Makefile
+++ b/usr.bin/Makefile
@@ -168,6 +168,7 @@
unvis \
vis \
vmstat \
+ vtspeakd \
w \
wall \
wc \
diff --git a/usr.bin/vtspeakd/Makefile b/usr.bin/vtspeakd/Makefile
new file mode 100644
--- /dev/null
+++ b/usr.bin/vtspeakd/Makefile
@@ -0,0 +1,6 @@
+# $FreeBSD$
+
+PROG= vtspeakd
+MAN= vtspeakd.1
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/vtspeakd/vtspeakd.1 b/usr.bin/vtspeakd/vtspeakd.1
new file mode 100644
--- /dev/null
+++ b/usr.bin/vtspeakd/vtspeakd.1
@@ -0,0 +1,78 @@
+.\" $FreeBSD$
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
+.\" Copyright (c) 2022 Hans Petter Selasky
+.\"
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+.\"
+.Dd October 5, 2022
+.Dt VTSPEAKD 1
+.Os
+.Sh NAME
+.Nm vtspeakd
+.Nd daemon to speak the console
+.Sh SYNOPSIS
+.Nm
+.Op Fl c
+.Op Fl k
+.Op Fl l Ar language
+.Op Fl S Ar program_name
+.Op Fl B
+.Op Fl v
+.Op Fl h
+.Sh DESCRIPTION
+The
+.Nm
+daemon is used to feed the contents of the current
+.Xr vt 4
+console to an external program, for example espeak.
+The
+.Nm
+program responds to Control-L and Control-B by either redrawing the
+screen or terminating the currently spoken text, respectivly.
+.Pp
+The options are as follows:
+.Bl -tag -width "xxxxx"
+.It Fl c
+Be chatty when speaking the console.
+.It Fl k
+Don't allow kernel to hangup speak program on bell.
+.It Fl l
+Select language to use.
+.It Fl S
+Select speak program to use.
+Default is bin/espeak in the local base directory.
+.It Fl B
+Run program in the backround.
+.It Fl v
+Print text strings for the speak program to standard output.
+.It Fl h
+Show usage and exit.
+.El
+.Sh EXAMPLES
+Start
+.Nm :
+.Pp
+.Dl vtspeakd -B
+.Sh SEE ALSO
+.Xr espeak 1
diff --git a/usr.bin/vtspeakd/vtspeakd.c b/usr.bin/vtspeakd/vtspeakd.c
new file mode 100644
--- /dev/null
+++ b/usr.bin/vtspeakd/vtspeakd.c
@@ -0,0 +1,361 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2022 Hans Petter Selasky <hselasky@freebsd.org>
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <err.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <paths.h>
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/wait.h>
+
+#define WRAP(str) (char []){str}
+
+static const char *speak_prog = _PATH_LOCALBASE "/bin/espeak";
+static char *speak_lang;
+static bool background;
+static bool chatty;
+static bool verbose;
+static bool nohangup;
+static uint16_t last_row = 0xffff;
+static uint16_t last_col = 0xffff;
+
+static void
+chatty_char(char ch, char *buffer, size_t *ppos)
+{
+ char temp[32];
+ size_t len;
+
+ switch (ch) {
+ case 'a' ... 'z':
+ case 'A' ... 'Z':
+ case '0' ... '9':
+ temp[0] = (char)ch;
+ temp[1] = 0;
+ break;
+ case '~':
+ strlcpy(temp, " tilde ", sizeof(temp));
+ break;
+ case '#':
+ strlcpy(temp, " hash ", sizeof(temp));
+ break;
+ case '+':
+ strlcpy(temp, " plus ", sizeof(temp));
+ break;
+ case '-':
+ strlcpy(temp, " minus ", sizeof(temp));
+ break;
+ case '_':
+ strlcpy(temp, " underscore ", sizeof(temp));
+ break;
+ case '*':
+ strlcpy(temp, " multiply ", sizeof(temp));
+ break;
+ case '/':
+ strlcpy(temp, " divide ", sizeof(temp));
+ break;
+ case '\\':
+ strlcpy(temp, " backslash ", sizeof(temp));
+ break;
+ case '=':
+ strlcpy(temp, " equal ", sizeof(temp));
+ break;
+ case '@':
+ strlcpy(temp, " at ", sizeof(temp));
+ break;
+ case '^':
+ strlcpy(temp, " xor ", sizeof(temp));
+ break;
+ case '|':
+ strlcpy(temp, " pipe ", sizeof(temp));
+ break;
+ case '&':
+ strlcpy(temp, " and ", sizeof(temp));
+ break;
+ case '(':
+ strlcpy(temp, " opening parenthesis ", sizeof(temp));
+ break;
+ case ')':
+ strlcpy(temp, " closing parenthesis ", sizeof(temp));
+ break;
+ case '[':
+ strlcpy(temp, " opening bracket ", sizeof(temp));
+ break;
+ case ']':
+ strlcpy(temp, " closing bracket ", sizeof(temp));
+ break;
+ case '{':
+ strlcpy(temp, " opening curlybracket ", sizeof(temp));
+ break;
+ case '}':
+ strlcpy(temp, " closing curlybracket ", sizeof(temp));
+ break;
+ case '.':
+ strlcpy(temp, " period ", sizeof(temp));
+ break;
+ case ',':
+ strlcpy(temp, " comma ", sizeof(temp));
+ break;
+ case ':':
+ strlcpy(temp, " colon ", sizeof(temp));
+ break;
+ case ';':
+ strlcpy(temp, " semicolon ", sizeof(temp));
+ break;
+ case '!':
+ strlcpy(temp, " not ", sizeof(temp));
+ break;
+ case '$':
+ strlcpy(temp, " dollar ", sizeof(temp));
+ break;
+ case '?':
+ strlcpy(temp, " questionmark ", sizeof(temp));
+ break;
+ case '>':
+ strlcpy(temp, " greaterthan ", sizeof(temp));
+ break;
+ case '<':
+ strlcpy(temp, " lessthan ", sizeof(temp));
+ break;
+ case '"':
+ strlcpy(temp, " quote ", sizeof(temp));
+ break;
+ case '\'':
+ strlcpy(temp, " apostrophe ", sizeof(temp));
+ break;
+ case '%':
+ strlcpy(temp, " percent ", sizeof(temp));
+ break;
+ case ' ':
+ temp[0] = ' ';
+ temp[1] = 0;
+ break;
+ default:
+ snprintf(temp, sizeof(temp), " byte %u ", (uint8_t)ch);
+ break;
+ }
+
+ len = strlen(temp);
+
+ if (buffer != NULL)
+ memcpy(buffer + *ppos, temp, len);
+ *ppos += len;
+}
+
+static char *
+chatty_buffer(char *data, size_t off)
+{
+ size_t pos;
+ char *ndata;
+
+ /* Compute size of chatty buffer: */
+ for (size_t x = pos = 0; data[x + off] != 0; x++)
+ chatty_char(data[x + off], NULL, &pos);
+
+ if (pos != 0) {
+ ndata = malloc(off + pos + 1);
+ for (size_t x = pos = 0; data[x + off] != 0; x++)
+ chatty_char(data[x + off], ndata + off, &pos);
+ memcpy(ndata, data, off);
+ ndata[off + pos] = 0; /* zero terminate string buffer */
+ free(data);
+ return (ndata);
+ } else {
+ return (data);
+ }
+}
+
+static void
+exit_function(void)
+{
+ int pid;
+
+ pid = 0;
+ sysctlbyname("kern.vt.screen_reader.hangup_pid", NULL, NULL, &pid, sizeof(pid));
+}
+
+static void
+sync_execv(const char *path, char *const argv[])
+{
+ int pid;
+
+ pid = fork();
+ if (pid == 0) {
+ if (!nohangup) {
+ pid = getpid();
+ sysctlbyname("kern.vt.screen_reader.hangup_pid", NULL, NULL, &pid, sizeof(pid));
+ atexit(&exit_function);
+ }
+ execv(path, argv);
+ exit(0);
+ } else if (pid != -1) {
+ waitpid(pid, NULL, 0);
+ }
+}
+
+static void
+feed(void)
+{
+ unsigned tmp = 1;
+ sysctlbyname("kern.vt.screen_reader.feed", NULL, NULL, &tmp, sizeof(tmp));
+}
+
+static bool
+speak(void)
+{
+ char *buffer;
+ char *data;
+ char *argv[8];
+
+ size_t len;
+ uint16_t row = 0;
+ uint16_t col = 0;
+ int err;
+
+ unsigned i = 0;
+
+ bool retval;
+
+ len = sizeof(row);
+ sysctlbyname("kern.vt.screen_reader.row", &row, &len, NULL, 0);
+
+ len = sizeof(col);
+ sysctlbyname("kern.vt.screen_reader.col", &col, &len, NULL, 0);
+
+ /* Check if anything changed */
+ retval = (row != last_row || col != last_col);
+
+ last_row = row;
+ last_col = col;
+
+ len = 0;
+ sysctlbyname("kern.vt.screen_reader.text_utf8", NULL, &len, NULL, 0);
+ if (len == 0)
+ return (retval);
+
+ data = malloc(len + 1);
+ memset(data, 0, len + 1);
+ sysctlbyname("kern.vt.screen_reader.text_utf8", data, &len, NULL, 0);
+
+ if (chatty) {
+ data = chatty_buffer(data, 0);
+ if (col == 0)
+ err = asprintf(&buffer, "row %u %s", row, data);
+ else
+ err = asprintf(&buffer, "row %u column %u %s", row, col, data);
+ } else {
+ if (col == 0)
+ err = asprintf(&buffer, "%u %s", row, data);
+ else
+ err = asprintf(&buffer, "%u column %u %s", row, col, data);
+ }
+ free(data);
+
+ if (err < 0)
+ return (true);
+ if (verbose)
+ printf("%s\n", buffer);
+
+ argv[i++] = WRAP("espeak");
+ if (speak_lang != NULL) {
+ argv[i++] = WRAP("-v");
+ argv[i++] = speak_lang;
+ }
+ argv[i++] = WRAP("--");
+ argv[i++] = buffer;
+ argv[i++] = NULL;
+
+ sync_execv(speak_prog, argv);
+
+ free(buffer);
+
+ return (true);
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr, "Usage: %s [parameters]\n"
+ "\t" "-c Be chatty\n"
+ "\t" "-k Bell does not hangup the speak program\n"
+ "\t" "-l <speak language>\n"
+ "\t" "-S <speak program name> # Default: %s\n"
+ "\t" "-B Run in background\n"
+ "\t" "-v Be verbose\n"
+ "\t" "-h Show usage\n",
+ getprogname(), speak_prog);
+ exit(1);
+}
+
+int
+main(int argc, char **argv)
+{
+ int c;
+
+ while ((c = getopt(argc, argv, "Bckl:hS:v")) != -1) {
+ switch (c) {
+ case 'B':
+ background = true;
+ break;
+ case 'c':
+ chatty = true;
+ break;
+ case 'k':
+ nohangup = true;
+ break;
+ case 'l':
+ speak_lang = optarg;
+ break;
+ case 'S':
+ speak_prog = optarg;
+ break;
+ case 'v':
+ verbose = true;
+ break;
+ default:
+ usage();
+ break;
+ }
+ }
+
+ if (background && daemon(0, 0) != 0)
+ errx(1, "daemon(0,0) failed");
+
+ for (;;) {
+ bool retval;
+
+ retval = speak();
+ feed();
+ if (retval == false)
+ usleep(500000);
+ }
+ return (0);
+}

File Metadata

Mime Type
text/plain
Expires
Thu, Nov 14, 6:05 PM (6 h, 1 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
14631782
Default Alt Text
D35776.diff (11 KB)

Event Timeline