From 5faafbbfa5d0104b70e1361dea34e9c5b6f0d2b7 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sun, 9 Jul 2023 12:28:48 -0700
Subject: [PATCH] write_scrollback_file binding

---
 src/Surface.zig       | 36 ++++++++++++++++++++++++++++++++++++
 src/config.zig        |  6 ++++++
 src/input/Binding.zig |  4 ++++
 3 files changed, 46 insertions(+)

diff --git a/src/Surface.zig b/src/Surface.zig
index 3f0e0b25b..d5a994556 100644
--- a/src/Surface.zig
+++ b/src/Surface.zig
@@ -1113,6 +1113,42 @@ pub fn keyCallback(
                     try self.io_thread.wakeup.notify();
                 },
 
+                .write_scrollback_file => {
+                    // Create a temporary directory to store our scrollback.
+                    var tmp_dir = try internal_os.TempDir.init();
+                    errdefer tmp_dir.deinit();
+
+                    // Open our scrollback file
+                    var file = try tmp_dir.dir.createFile("scrollback", .{});
+                    defer file.close();
+
+                    // Write the scrollback contents. This requires a lock.
+                    {
+                        self.renderer_state.mutex.lock();
+                        defer self.renderer_state.mutex.unlock();
+
+                        const history_max = terminal.Screen.RowIndexTag.history.maxLen(
+                            &self.io.terminal.screen,
+                        );
+
+                        try self.io.terminal.screen.dumpString(file.writer(), .{
+                            .start = .{ .history = 0 },
+                            .end = .{ .history = history_max -| 1 },
+                            .unwrap = true,
+                        });
+                    }
+
+                    // Get the final path
+                    var path_buf: [std.fs.MAX_PATH_BYTES]u8 = undefined;
+                    const path = try tmp_dir.dir.realpath("scrollback", &path_buf);
+
+                    _ = self.io_thread.mailbox.push(try termio.Message.writeReq(
+                        self.alloc,
+                        path,
+                    ), .{ .forever = {} });
+                    try self.io_thread.wakeup.notify();
+                },
+
                 .toggle_dev_mode => if (DevMode.enabled) {
                     DevMode.instance.visible = !DevMode.instance.visible;
                     try self.queueRender();
diff --git a/src/config.zig b/src/config.zig
index feeea8cd2..0a7f9f533 100644
--- a/src/config.zig
+++ b/src/config.zig
@@ -393,6 +393,12 @@ pub const Config = struct {
             .{ .toggle_dev_mode = {} },
         );
 
+        try result.keybind.set.put(
+            alloc,
+            .{ .key = .j, .mods = ctrlOrSuper(.{ .shift = true }) },
+            .{ .write_scrollback_file = {} },
+        );
+
         // Windowing
         if (comptime !builtin.target.isDarwin()) {
             try result.keybind.set.put(
diff --git a/src/input/Binding.zig b/src/input/Binding.zig
index 010992960..f57ecaae0 100644
--- a/src/input/Binding.zig
+++ b/src/input/Binding.zig
@@ -174,6 +174,10 @@ pub const Action = union(enum) {
     /// is backwards.
     jump_to_prompt: i16,
 
+    /// Write the entire scrollback into a temporary file and write the
+    /// path to the file to the tty.
+    write_scrollback_file: void,
+
     /// Dev mode
     toggle_dev_mode: void,