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terminal: implement origin mode and left margin handling for CR

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This commit is contained in:
Mitchell Hashimoto
2023-10-06 11:37:50 -07:00
parent e3b455444d
commit 3360a88768
1 changed files with 40 additions and 4 deletions
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44
src/terminal/Terminal.zig
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@ -1534,11 +1534,16 @@ pub fn carriageReturn(self: *Terminal) void {
const tracy = trace(@src());
defer tracy.end();
// TODO: left/right margin mode
// TODO: origin mode
self.screen.cursor.x = 0;
// Always reset pending wrap state
self.screen.cursor.pending_wrap = false;
// In origin mode we always move to the left margin
self.screen.cursor.x = if (self.modes.get(.origin))
self.scrolling_region.left
else if (self.screen.cursor.x >= self.scrolling_region.left)
self.scrolling_region.left
else
0;
}
/// Linefeed moves the cursor to the next line.
@ -2207,6 +2212,37 @@ test "Terminal: carriage return unsets pending wrap" {
try testing.expect(t.screen.cursor.pending_wrap == false);
}
test "Terminal: carriage return origin mode moves to left margin" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
t.modes.set(.origin, true);
t.screen.cursor.x = 0;
t.scrolling_region.left = 2;
t.carriageReturn();
try testing.expectEqual(@as(usize, 2), t.screen.cursor.x);
}
test "Terminal: carriage return left of left margin moves to zero" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
t.screen.cursor.x = 1;
t.scrolling_region.left = 2;
t.carriageReturn();
try testing.expectEqual(@as(usize, 0), t.screen.cursor.x);
}
test "Terminal: carriage return right of left margin moves to left margin" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
t.screen.cursor.x = 3;
t.scrolling_region.left = 2;
t.carriageReturn();
try testing.expectEqual(@as(usize, 2), t.screen.cursor.x);
}
test "Terminal: backspace" {
var t = try init(testing.allocator, 80, 80);
defer t.deinit(testing.allocator);