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Implement Delete in the editor

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Not caring about C-d right now, we might have to convince the tty
to send it to us--I'm not sure if it does, or returns EOF.

Updates #4
This commit is contained in:
Přemysl Eric Janouch 2020-10-22 00:05:24 +02:00
parent 12d8f6a931
commit e8eaa2366a
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 11 additions and 2 deletions
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13
sdn.cpp
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@ -415,7 +415,7 @@ enum { ALT = 1 << 24, SYM = 1 << 25 }; // Outside the range of Unicode
XX(CHDIR) XX(PARENT) XX(GO_START) XX(GO_HOME) \
XX(SEARCH) XX(RENAME) XX(RENAME_PREFILL) \
XX(TOGGLE_FULL) XX(REVERSE_SORT) XX(SHOW_HIDDEN) XX(REDRAW) XX(RELOAD) \
XX(INPUT_ABORT) XX(INPUT_CONFIRM) XX(INPUT_B_DELETE) \
XX(INPUT_ABORT) XX(INPUT_CONFIRM) XX(INPUT_B_DELETE) XX(INPUT_DELETE) \
XX(INPUT_BACKWARD) XX(INPUT_FORWARD) XX(INPUT_BEGINNING) XX(INPUT_END)
#define XX(name) ACTION_ ## name,
@ -453,7 +453,7 @@ static map<wint_t, action> g_input_actions {
{L'\r', ACTION_INPUT_CONFIRM}, {KEY (ENTER), ACTION_INPUT_CONFIRM},
// Sometimes terminfo is wrong, we need to accept both of these
{L'\b', ACTION_INPUT_B_DELETE}, {CTRL ('?'), ACTION_INPUT_B_DELETE},
{KEY (BACKSPACE), ACTION_INPUT_B_DELETE},
{KEY (BACKSPACE), ACTION_INPUT_B_DELETE}, {KEY (DC), ACTION_INPUT_DELETE},
{CTRL ('B'), ACTION_INPUT_BACKWARD}, {KEY (LEFT), ACTION_INPUT_BACKWARD},
{CTRL ('F'), ACTION_INPUT_FORWARD}, {KEY (RIGHT), ACTION_INPUT_FORWARD},
{CTRL ('A'), ACTION_INPUT_BEGINNING}, {KEY (HOME), ACTION_INPUT_BEGINNING},
@ -1219,6 +1219,15 @@ fun handle_editor (wint_t c) {
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)))
break;
}
break;
default:
if (c & (ALT | SYM)) {
beep ();