/*
this function displays the current
history entry
*/
void _el_display_history()
{
int line_len;
int h_len;
_el_set_cursor(-rl_point);
if ((!(_el_hs.entries)) || (!_el_mb2w
(_el_hs.entries[_el_hs.offset]->line, &_el_wide))) {
return;
}
h_len = (int)wcslen(_el_wide);
line_len = (int)wcslen(_el_line_buffer);
if (h_len > (_EL_BUF_LEN - 1)) {
h_len = _EL_BUF_LEN - 1;
_el_wide[_EL_BUF_LEN - 1] = '\0';
}
wcscpy_s(_el_line_buffer, _el_line_buffer_size, _el_wide);
wcscpy_s(_el_print, _el_line_buffer_size, _el_wide);
wcscpy_s(_el_line_buffer, _el_line_buffer_size, _el_wide);
rl_point = (int)h_len;
if (h_len < line_len) {
_el_add_char(_el_print, _T(' '), line_len - h_len);
}
_el_print_string(_el_print);
_el_set_cursor(h_len);
}
/*
delete character(s) on the command line
*/
int _el_delete_char(UINT32 vk, int n)
{
int c;
int line_len;
int eff_n;
line_len = (int)wcslen(_el_line_buffer);
eff_n = n;
switch (vk) {
case VK_DELETE:
/*
the character in correspondence
of the cursor is to be deleted;
check that we are not going to delete
more characters than those which exist
between the logical cursor position
and the end of line
*/
if ((line_len - rl_point) < n) {
eff_n = line_len - rl_point;
}
break;
case VK_BACK:
/*
the character before
the cursor is to be deleted
check that we are not going to delete
more characters than those which exist
between the logical cursor position
and the beginning of line
*/
if ((rl_point - n) >= 0) {
rl_point -= n;
}
else {
eff_n = rl_point;
rl_point = 0;
}
/*
with backspace we need to reposition
the cursor as well
*/
if (_el_set_cursor(-eff_n)) {
return -1;
}
break;
default:
return -1;
}
c = (int)wcslen(&_el_line_buffer[rl_point]) + 1;
/*
cut out deleted characters
*/
memmove(&_el_line_buffer[rl_point],
&_el_line_buffer[rl_point + eff_n],
(c - eff_n) * sizeof(wchar_t));
/*
copy the characters from the current cursor
position to end of line in a string
*/
memcpy(_el_print, &_el_line_buffer[rl_point],
(c - eff_n) * sizeof(wchar_t));
_el_print[c - eff_n] = '\0';
/*
add spaces to the string to be printed
to clear out "tails" from the command line
*/
_el_add_char(_el_print, _T(' '), n);
if (!_el_w2mb(_el_line_buffer, &rl_line_buffer)) {
return -1;
}
/*
print out and goodbye
*/
return _el_print_string(_el_print);
}
