feat: finish ghostty pane backend integration

1 files changed, 85 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/unicode/props_uucode.zig b/vendor/libghostty-vt/src/unicode/props_uucode.zig
new file mode 100644
index 00000000..527a757e
--- /dev/null
+++ b/vendor/libghostty-vt/src/unicode/props_uucode.zig
@@ -0,0 +1,85 @@
+const props = @This();
+const std = @import("std");
+const assert = std.debug.assert;
+const uucode = @import("uucode");
+const lut = @import("lut.zig");
+const Properties = @import("props.zig").Properties;
+
+pub fn get(cp: u21) Properties {
+    if (cp > uucode.config.max_code_point) return .{
+        .width = 1,
+        .width_zero_in_grapheme = true,
+        .grapheme_break = .other,
+        .emoji_vs_base = false,
+    };
+
+    return .{
+        .width = uucode.get(.width, cp),
+        .width_zero_in_grapheme = uucode.get(.wcwidth_zero_in_grapheme, cp),
+        .grapheme_break = uucode.get(.grapheme_break_no_control, cp),
+        .emoji_vs_base = uucode.get(.is_emoji_vs_base, cp),
+    };
+}
+
+/// Runnable binary to generate the lookup tables and output to stdout.
+pub fn main() !void {
+    var arena_state = std.heap.ArenaAllocator.init(std.heap.page_allocator);
+    defer arena_state.deinit();
+    const alloc = arena_state.allocator();
+
+    const gen: lut.Generator(
+        Properties,
+        struct {
+            pub fn get(ctx: @This(), cp: u21) !Properties {
+                _ = ctx;
+                return props.get(cp);
+            }
+
+            pub fn eql(ctx: @This(), a: Properties, b: Properties) bool {
+                _ = ctx;
+                return a.eql(b);
+            }
+        },
+    ) = .{};
+
+    const t = try gen.generate(alloc);
+    defer alloc.free(t.stage1);
+    defer alloc.free(t.stage2);
+    defer alloc.free(t.stage3);
+
+    var buf: [4096]u8 = undefined;
+    var stdout = std.fs.File.stdout().writer(&buf);
+    try t.writeZig(&stdout.interface);
+    // Use flush instead of end because stdout is a pipe when captured by
+    // the build system, and pipes cannot be truncated (Windows returns
+    // INVALID_PARAMETER, Linux returns EINVAL).
+    try stdout.interface.flush();
+
+    // Uncomment when manually debugging to see our table sizes.
+    // std.log.warn("stage1={} stage2={} stage3={}", .{
+    //     t.stage1.len,
+    //     t.stage2.len,
+    //     t.stage3.len,
+    // });
+}
+
+test "unicode props: tables match uucode" {
+    if (std.valgrind.runningOnValgrind() > 0) return error.SkipZigTest;
+
+    const testing = std.testing;
+    const table = @import("props_table.zig").table;
+
+    const min = 0xFF + 1; // start outside ascii
+    const max = std.math.maxInt(u21) + 1;
+    for (min..max) |cp| {
+        const t = table.get(@intCast(cp));
+        const uu = if (cp > uucode.config.max_code_point)
+            1
+        else
+            uucode.get(.width, @intCast(cp));
+        if (t.width != uu) {
+            std.log.warn("mismatch cp=U+{x} t={} uu={}", .{ cp, t.width, uu });
+            try testing.expect(false);
+        }
+    }
+}