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Cleanup

This commit is contained in:
Přemysl Eric Janouch 2020-10-22 00:33:07 +02:00
parent e8eaa2366a
commit 706795c85c
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 17 additions and 16 deletions
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33
sdn.cpp
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@ -1176,6 +1176,14 @@ fun choose (const entry &entry) {
}
}
// Move the cursor in `diff` direction and look for non-combining characters
fun move_towards_spacing (int diff) -> bool {
g.editor_cursor += diff;
return g.editor_cursor <= 0
|| g.editor_cursor >= int (g.editor_line.length ())
|| wcwidth (g.editor_line.at (g.editor_cursor));
}
fun handle_editor (wint_t c) {
auto i = g_input_actions.find (c);
switch (i == g_input_actions.end () ? ACTION_NONE : i->second) {
@ -1197,34 +1205,27 @@ fun handle_editor (wint_t c) {
g.editor_cursor = g.editor_line.length ();
break;
case ACTION_INPUT_BACKWARD:
while (g.editor_cursor > 0) {
if (--g.editor_cursor <= 0
|| wcwidth (g.editor_line.at (g.editor_cursor)))
break;
}
while (g.editor_cursor > 0
&& !move_towards_spacing (-1))
;
break;
case ACTION_INPUT_FORWARD:
while (g.editor_cursor < int (g.editor_line.length ())) {
if (++g.editor_cursor >= int (g.editor_line.length ())
|| wcwidth (g.editor_line.at (g.editor_cursor)))
break;
}
while (g.editor_cursor < int (g.editor_line.length ())
&& !move_towards_spacing (+1))
;
break;
case ACTION_INPUT_B_DELETE:
// Remove the last character including its postfix combining characters
while (g.editor_cursor > 0) {
auto erased = g.editor_line.at (--g.editor_cursor);
auto finished = move_towards_spacing (-1);
g.editor_line.erase (g.editor_cursor, 1);
if (wcwidth (erased))
if (finished)
break;
}
break;
case ACTION_INPUT_DELETE:
// Remove the next character including its postfix combining characters
while (g.editor_cursor < int (g.editor_line.length ())) {
g.editor_line.erase (g.editor_cursor, 1);
if (g.editor_cursor >= int (g.editor_line.length ())
|| wcwidth (g.editor_line.at (g.editor_cursor)))
if (move_towards_spacing (0))
break;
}
break;