/* Completion, from vi's point of view. */
int
rl_vi_complete (int ignore, int key)
{
if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
{
if (!whitespace (rl_line_buffer[rl_point + 1]))
rl_vi_end_word (1, 'E');
rl_point++;
}
if (key == '*')
rl_complete_internal ('*'); /* Expansion and replacement. */
else if (key == '=')
rl_complete_internal ('?'); /* List possible completions. */
else if (key == '\\')
rl_complete_internal (TAB); /* Standard Readline completion. */
else
rl_complete (0, key);
if (key == '*' || key == '\\')
{
_rl_vi_set_last (key, 1, rl_arg_sign);
rl_vi_insertion_mode (ignore, key);
}
return (0);
}
static int tab_callback(int count, int key) {
if (!rl_point) {
strip_initial_spaces += tab_width;
return 0;
}
int i;
for (i = line_start(rl_point); i < rl_point; i++) {
if (rl_line_buffer[i] != ' ') {
// do tab completion
i = rl_point;
rl_complete_internal('!');
if (i < rl_point && rl_line_buffer[rl_point-1] == ' ') {
rl_delete_text(rl_point-1, rl_point);
rl_point = rl_point-1;
}
return 0;
}
}
// indent to next tab stop
if (suppress_space()) {
spaces_suppressed += tab_width;
} else {
i = line_start(rl_point) + prompt_length;
do { rl_insert_text(" "); } while ((rl_point - i) % tab_width);
}
return 0;
}
int complete_filenames()
{
if (!complete_filenames_query())
return 0;
char * bk_completer_word_break_characters = rl_completer_word_break_characters;
char * (*bk_completion_entry_function)(const char*, int) = rl_completion_entry_function;
rl_completer_word_break_characters = " \t\n\"\\'`@$><=;|&{(";
rl_completion_entry_function = rl_filename_completion_function;
rl_complete_internal('!');
rl_completer_word_break_characters = bk_completer_word_break_characters;
rl_completion_entry_function = bk_completion_entry_function;
return 1;
}
int
rline_rl_complete (struct rline *rline, struct tgdb_list *list, display_callback display_cb)
{
int size;
int key;
rl_command_func_t *compare_func = NULL;
if (!rline)
return -1;
/* Currently, if readline output's the tab completion to rl_outstream, it will fill
* the pty between it and CGDB and will cause CGDB to hang. */
if (!display_cb)
return -1;
size = tgdb_list_size (list);
if (size == 0) {
rl_completion_word_break_hook = NULL;
rl_completion_entry_function = NULL;
} else {
rl_completion_word_break_hook = rline_rl_cpvfunc_t;
rl_completion_entry_function = rline_rl_completion_entry_function;
}
rl_completion_display_matches_hook = display_cb;
rline_local_iter = tgdb_list_get_first (list);
/* This is probably a hack, however it works for now.
*
* Basically, rl_complete is working fine. After the call to rl_complete,
* rl_line_buffer contains the proper data. However, the CGDB main loop
* always call rline_rl_forced_update_display, which in the case of tab
* completion does this, (gdb) b ma(gdb) b main
*
* Normally, this works fine because the user hits '\n', which puts the prompt
* on the next line. In this case, the user hit's \t.
*
* In order work around this problem, simply putting the \r should work
* for now.
*
* This obviously shouldn't be done when readline is doing
* `?' means list the possible completions.
* style completion. Because that actuall does list all of the values on
* a different line. In this situation the \r goes after the completion
* is done, since only the current prompt is on that line.
*/
/* Another confusing comparison. This checks to see if the last
* readline function and the current readline function and the
* tab completion callback are all the same. This ensures that this
* is the second time the user hit \t in a row. Instead of simply
* calling rl_complete_internal, it's better to call, rl_completion_mode
* because this checks to see what kind of completion should be done.
*/
if (rline->rline_rl_last_func == rline->tab_completion &&
rline->rline_rl_last_func == rl_last_func)
compare_func = rline->tab_completion;
key = rl_completion_mode (compare_func);
if (key == TAB)
fprintf (rline->output, "\r");
rl_complete_internal (key);
if (key != TAB)
fprintf (rline->output, "\r");
return 0;
}