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terminal/new: CR and LF

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This commit is contained in:
Mitchell Hashimoto
2024-02-23 17:09:21 -08:00
parent d95bde0af7
commit 4acbf09bb6
2 changed files with 117 additions and 3 deletions
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8
src/terminal/Terminal.zig
View File

@ -2892,6 +2892,7 @@ test "Terminal: print right margin outside" {
}
}
// X
test "Terminal: print right margin outside wrap" {
var t = try init(testing.allocator, 10, 5);
defer t.deinit(testing.allocator);
@ -2909,6 +2910,7 @@ test "Terminal: print right margin outside wrap" {
}
}
// X
test "Terminal: linefeed and carriage return" {
var t = try init(testing.allocator, 80, 80);
defer t.deinit(testing.allocator);
@ -2927,6 +2929,7 @@ test "Terminal: linefeed and carriage return" {
}
}
// X
test "Terminal: linefeed unsets pending wrap" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
@ -2938,6 +2941,7 @@ test "Terminal: linefeed unsets pending wrap" {
try testing.expect(t.screen.cursor.pending_wrap == false);
}
// X
test "Terminal: linefeed mode automatic carriage return" {
var t = try init(testing.allocator, 10, 10);
defer t.deinit(testing.allocator);
@ -2954,6 +2958,7 @@ test "Terminal: linefeed mode automatic carriage return" {
}
}
// X
test "Terminal: carriage return unsets pending wrap" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
@ -2965,6 +2970,7 @@ test "Terminal: carriage return unsets pending wrap" {
try testing.expect(t.screen.cursor.pending_wrap == false);
}
// X
test "Terminal: carriage return origin mode moves to left margin" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
@ -2976,6 +2982,7 @@ test "Terminal: carriage return origin mode moves to left margin" {
try testing.expectEqual(@as(usize, 2), t.screen.cursor.x);
}
// 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);
@ -2986,6 +2993,7 @@ test "Terminal: carriage return left of left margin moves to zero" {
try testing.expectEqual(@as(usize, 0), t.screen.cursor.x);
}
// 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);

112
src/terminal/new/Terminal.zig
View File

@ -202,9 +202,8 @@ pub fn printString(self: *Terminal, str: []const u8) !void {
while (it.nextCodepoint()) |cp| {
switch (cp) {
'\n' => {
@panic("TODO: newline");
// self.carriageReturn();
// try self.linefeed();
self.carriageReturn();
try self.linefeed();
},
else => try self.print(cp),
@ -411,6 +410,26 @@ fn printWrap(self: *Terminal) !void {
self.screen.cursor.page_row.flags.wrap_continuation = true;
}
/// Carriage return moves the cursor to the first column.
pub fn carriageReturn(self: *Terminal) void {
// Always reset pending wrap state
self.screen.cursor.pending_wrap = false;
// In origin mode we always move to the left margin
self.screen.cursorHorizontalAbsolute(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.
pub fn linefeed(self: *Terminal) !void {
try self.index();
if (self.modes.get(.linefeed)) self.carriageReturn();
}
/// Move the cursor to the next line in the scrolling region, possibly scrolling.
///
/// If the cursor is outside of the scrolling region: move the cursor one line
@ -827,3 +846,90 @@ test "Terminal: print right margin outside wrap" {
try testing.expectEqualStrings("123456789X\n Y", str);
}
}
test "Terminal: linefeed and carriage return" {
var t = try init(testing.allocator, 80, 80);
defer t.deinit(testing.allocator);
// Basic grid writing
for ("hello") |c| try t.print(c);
t.carriageReturn();
try t.linefeed();
for ("world") |c| try t.print(c);
try testing.expectEqual(@as(usize, 1), t.screen.cursor.y);
try testing.expectEqual(@as(usize, 5), t.screen.cursor.x);
{
const str = try t.plainString(testing.allocator);
defer testing.allocator.free(str);
try testing.expectEqualStrings("hello\nworld", str);
}
}
test "Terminal: linefeed unsets pending wrap" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
// Basic grid writing
for ("hello") |c| try t.print(c);
try testing.expect(t.screen.cursor.pending_wrap == true);
try t.linefeed();
try testing.expect(t.screen.cursor.pending_wrap == false);
}
test "Terminal: linefeed mode automatic carriage return" {
var t = try init(testing.allocator, 10, 10);
defer t.deinit(testing.allocator);
// Basic grid writing
t.modes.set(.linefeed, true);
try t.printString("123456");
try t.linefeed();
try t.print('X');
{
const str = try t.plainString(testing.allocator);
defer testing.allocator.free(str);
try testing.expectEqualStrings("123456\nX", str);
}
}
test "Terminal: carriage return unsets pending wrap" {
var t = try init(testing.allocator, 5, 80);
defer t.deinit(testing.allocator);
// Basic grid writing
for ("hello") |c| try t.print(c);
try testing.expect(t.screen.cursor.pending_wrap == true);
t.carriageReturn();
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);
}