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Shell: Support forward delete

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This commit is contained in:
Conrad Pankoff 2019-08-18 11:57:10 +10:00 committed by Andreas Kling
parent 266b9cb654
commit 36e3e7b75a
Notes: sideshowbarker 2024-07-19 12:38:08 +09:00 
Author: https://github.com/deoxxa
Commit: https://github.com/SerenityOS/serenity/commit/36e3e7b75a2
Pull-request: https://github.com/SerenityOS/serenity/pull/461
2 changed files with 24 additions and 0 deletions
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23
Shell/LineEditor.cpp
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@ -72,6 +72,22 @@ String LineEditor::get_line(const String& prompt)
exit(2);
}
auto do_delete = [&] {
if (m_cursor == m_buffer.size()) {
fputc('\a', stdout);
fflush(stdout);
return;
}
m_buffer.remove(m_cursor - 1);
fputs("\033[3~", stdout);
fflush(stdout);
vt_save_cursor();
vt_clear_to_end_of_line();
for (int i = m_cursor; i < m_buffer.size(); ++i)
fputc(m_buffer[i], stdout);
vt_restore_cursor();
};
for (ssize_t i = 0; i < nread; ++i) {
char ch = keybuf[i];
if (ch == 0)
@ -136,12 +152,19 @@ String LineEditor::get_line(const String& prompt)
}
m_state = InputState::Free;
continue;
case '3':
do_delete();
m_state = InputState::ExpectTerminator;
continue;
default:
dbgprintf("Shell: Unhandled final: %b (%c)\n", ch, ch);
m_state = InputState::Free;
continue;
}
break;
case InputState::ExpectTerminator:
m_state = InputState::Free;
continue;
case InputState::Free:
if (ch == 27) {
m_state = InputState::ExpectBracket;

1
Shell/LineEditor.h
View file

@ -32,6 +32,7 @@ private:
Free,
ExpectBracket,
ExpectFinal,
ExpectTerminator,
};
InputState m_state { InputState::Free };
};