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implement erase display scrollback ("clear" command)

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This commit is contained in:
Mitchell Hashimoto
2022-08-09 09:22:34 -07:00
parent fb5afbedd2
commit ad1cdbcd59
2 changed files with 9 additions and 5 deletions
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2
src/terminal/Screen.zig
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@ -116,8 +116,6 @@ pub const RowIndex = union(RowIndexTag) {
/// The index is from the top of the history (scrollback) to just
/// prior to the active area.
history: usize,
// TODO: others
};
/// The tags of RowIndex

12
src/terminal/Terminal.zig
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@ -597,9 +597,15 @@ pub fn eraseDisplay(
self.screen.cursor.pending_wrap = false;
},
else => {
log.err("unimplemented display mode: {}", .{mode});
@panic("unimplemented");
.scrollback => {
const region = self.screen.region(.history);
std.mem.set(Screen.Cell, region[0], self.screen.cursor.pen);
std.mem.set(Screen.Cell, region[1], self.screen.cursor.pen);
// TODO: move this logic to the Screen implementation
self.screen.top = self.screen.visible_offset;
self.screen.bottom = self.screen.bottom - self.screen.visible_offset;
self.screen.visible_offset = 0;
},
}
}