/* Get a character from the command window. This is called from the
readline package. */
int
tui_getc (FILE *fp)
{
int ch;
WINDOW *w;
w = TUI_CMD_WIN->generic.handle;
#ifdef TUI_USE_PIPE_FOR_READLINE
/* Flush readline output. */
tui_readline_output (0, 0);
#endif
ch = wgetch (w);
ch = tui_handle_resize_during_io (ch);
/* The \n must be echoed because it will not be printed by
readline. */
if (ch == '\n')
{
/* When hitting return with an empty input, gdb executes the last
command. If we emit a newline, this fills up the command window
with empty lines with gdb prompt at beginning. Instead of that,
stay on the same line but provide a visual effect to show the
user we recognized the command. */
if (rl_end == 0)
{
wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, 0);
/* Clear the line. This will blink the gdb prompt since
it will be redrawn at the same line. */
wclrtoeol (w);
wrefresh (w);
napms (20);
}
else
{
wmove (w, TUI_CMD_WIN->detail.command_info.cur_line,
TUI_CMD_WIN->detail.command_info.curch);
waddch (w, ch);
}
}
if (key_is_command_char (ch))
{ /* Handle prev/next/up/down here. */
ch = tui_dispatch_ctrl_char (ch);
}
if (ch == '\n' || ch == '\r' || ch == '\f')
TUI_CMD_WIN->detail.command_info.curch = 0;
if (ch == KEY_BACKSPACE)
return '\b';
return ch;
}
/* Get a character from the command window. This is called from the
readline package. */
int
tui_getc (FILE *fp)
{
int ch;
WINDOW *w;
w = TUI_CMD_WIN->generic.handle;
#ifdef TUI_USE_PIPE_FOR_READLINE
/* Flush readline output. */
tui_readline_output (0, 0);
#endif
ch = wgetch (w);
ch = tui_handle_resize_during_io (ch);
/* The \n must be echoed because it will not be printed by
readline. */
if (ch == '\n')
{
/* When hitting return with an empty input, gdb executes the last
command. If we emit a newline, this fills up the command window
with empty lines with gdb prompt at beginning. Instead of that,
stay on the same line but provide a visual effect to show the
user we recognized the command. */
if (rl_end == 0)
{
wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, 0);
/* Clear the line. This will blink the gdb prompt since
it will be redrawn at the same line. */
wclrtoeol (w);
wrefresh (w);
napms (20);
}
else
{
wmove (w, TUI_CMD_WIN->detail.command_info.cur_line,
TUI_CMD_WIN->detail.command_info.curch);
waddch (w, ch);
}
}
if (key_is_command_char (ch))
{ /* Handle prev/next/up/down here. */
ch = tui_dispatch_ctrl_char (ch);
}
if (ch == '\n' || ch == '\r' || ch == '\f')
TUI_CMD_WIN->detail.command_info.curch = 0;
if (ch == KEY_BACKSPACE)
return '\b';
if (async_command_editing_p && key_is_start_sequence (ch))
{
int ch_pending;
nodelay (w, TRUE);
ch_pending = wgetch (w);
nodelay (w, FALSE);
/* If we have pending input following a start sequence, call the stdin
event handler again because ncurses may have already read and stored
the input into its internal buffer, meaning that we won't get an stdin
event for it. If we don't compensate for this missed stdin event, key
sequences as Alt_F (^[f) will not behave promptly.
(We only compensates for the missed 2nd byte of a key sequence because
2-byte sequences are by far the most commonly used. ncurses may have
buffered a larger, 3+-byte key sequence though it remains to be seen
whether it is useful to compensate for all the bytes of such
sequences.) */
if (ch_pending != ERR)
{
ungetch (ch_pending);
call_stdin_event_handler_again_p = 1;
}
}
return ch;
}
