feat: finish ghostty pane backend integration

1 files changed, 82 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/synthetic/cli/Osc.zig b/vendor/libghostty-vt/src/synthetic/cli/Osc.zig
new file mode 100644
index 00000000..686563fc
--- /dev/null
+++ b/vendor/libghostty-vt/src/synthetic/cli/Osc.zig
@@ -0,0 +1,82 @@
+const Osc = @This();
+
+const std = @import("std");
+const assert = std.debug.assert;
+const Allocator = std.mem.Allocator;
+const synthetic = @import("../main.zig");
+
+const log = std.log.scoped(.@"terminal-stream-bench");
+
+pub const Options = struct {
+    /// Probability of generating a valid value.
+    @"p-valid": f64 = 0.5,
+
+    style: enum {
+        /// Write all OSC data, including ESC ] and ST for end-to-end tests
+        streaming,
+        /// Only write data, prefixed with a length, used for testing just the
+        /// OSC parser.
+        parser,
+    } = .streaming,
+};
+
+opts: Options,
+
+/// Create a new terminal stream handler for the given arguments.
+pub fn create(
+    alloc: Allocator,
+    opts: Options,
+) !*Osc {
+    const ptr = try alloc.create(Osc);
+    errdefer alloc.destroy(ptr);
+    ptr.* = .{ .opts = opts };
+    return ptr;
+}
+
+pub fn destroy(self: *Osc, alloc: Allocator) void {
+    alloc.destroy(self);
+}
+
+pub fn run(self: *Osc, writer: *std.Io.Writer, rand: std.Random) !void {
+    var gen: synthetic.Osc = .{
+        .rand = rand,
+        .p_valid = self.opts.@"p-valid",
+    };
+
+    var buf: [1024]u8 = undefined;
+    while (true) {
+        var fixed: std.Io.Writer = .fixed(&buf);
+        try gen.next(&fixed, buf.len);
+        const data = fixed.buffered();
+        switch (self.opts.style) {
+            .streaming => {
+                writer.writeAll(data) catch |err| switch (err) {
+                    error.WriteFailed => return,
+                };
+            },
+            .parser => {
+                writer.writeInt(usize, data.len - 3, .little) catch |err| switch (err) {
+                    error.WriteFailed => return,
+                };
+                writer.writeAll(data[2 .. data.len - 1]) catch |err| switch (err) {
+                    error.WriteFailed => return,
+                };
+            },
+        }
+    }
+}
+
+test Osc {
+    const testing = std.testing;
+    const alloc = testing.allocator;
+
+    const impl: *Osc = try .create(alloc, .{});
+    defer impl.destroy(alloc);
+
+    var prng = std.Random.DefaultPrng.init(1);
+    const rand = prng.random();
+
+    var buf: [1024]u8 = undefined;
+    var writer: std.Io.Writer = .fixed(&buf);
+    try impl.run(&writer, rand);
+}