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Further simplification of key handling

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Changed so that the "ctrl-t ctrl-t" sequence is now simply "ctrl-t t" to
send the ctrl-t key code. This is inspired by screen which does similar
to send its command key code (ctrl-a a).

This change also allows to easier add new key commands if needed.

Updated man page accordingly.
This commit is contained in:
Martin Lund 2016-05-17 11:53:57 +02:00
parent 9571a84d70
commit 0687d7ff7b
4 changed files with 49 additions and 17 deletions
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52
src/tty.c
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@ -166,8 +166,9 @@ int connect_tty(void)
{
fd_set rdfs; /* Read file descriptor set */
int maxfd; /* Maximum file descriptor used */
char input_char, output_char;
static char previous_char = 0;
static bool first = true;
static char input_char, previous_char = 0;
int status;
/* Open tty device */
@ -261,6 +262,8 @@ int connect_tty(void)
}
if (FD_ISSET(STDIN_FILENO, &rdfs))
{
char forward = true;
/* Input from stdin ready */
status = read(STDIN_FILENO, &input_char, 1);
if (status <= 0)
@ -269,25 +272,44 @@ int connect_tty(void)
goto error_read;
}
/* Exit upon ctrl-t + q sequence */
if ((input_char == KEY_Q) && (previous_char == KEY_CTRL_T))
exit(EXIT_SUCCESS);
/* Forward input to output except ctrl-t key */
output_char = input_char;
if (input_char == KEY_CTRL_T)
forward = false;
/* Ignore ctrl-t except when repeated */
if ((input_char != KEY_CTRL_T) ||
((input_char == KEY_CTRL_T) && (previous_char == KEY_CTRL_T)))
/* Handle escape key commands */
if (previous_char == KEY_CTRL_T)
{
/* Forward input to tty device */
status = write(fd, &input_char, 1);
if (status < 0)
printf("Warning: Could not write to tty device\r\n");
switch (input_char)
{
case KEY_Q:
/* Exit upon ctrl-t q sequence */
exit(EXIT_SUCCESS);
case KEY_T:
/* Send ctrl-t key code upon ctrl-t t sequence */
output_char = KEY_CTRL_T;
break;
default:
/* Ignore unknown ctrl-t escaped keys */
forward = false;
break;
}
}
previous_char = input_char;
if (forward)
{
/* Send output to tty device */
status = write(fd, &output_char, 1);
if (status < 0)
warning_printf("Could not write to tty device");
/* Write to log */
if (option.log)
log_write(input_char);
/* Write to log */
if (option.log)
log_write(output_char);
}
/* Save previous key */
previous_char = input_char;
/* Insert output delay */
if (option.output_delay)