From b913b8ad87df928b9f6df0a432e2c03e4c040614 Mon Sep 17 00:00:00 2001
From: CJ van den Berg <cj@vdbonline.com>
Date: Sat, 9 Aug 2025 19:15:01 +0200
Subject: [PATCH] feat: write early log output to stderr/stdout until TUI is
 initialized

---
 src/log.zig     | 31 ++++++++++++++++++++++++++++++-
 src/tui/tui.zig |  4 ++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/log.zig b/src/log.zig
index 71d3521..1beff73 100644
--- a/src/log.zig
+++ b/src/log.zig
@@ -11,6 +11,8 @@ subscriber: ?tp.pid,
 heap: [32 + 1024]u8,
 fba: std.heap.FixedBufferAllocator,
 msg_store: MsgStoreT,
+no_stdout: bool = false,
+no_stderr: bool = false,
 
 const MsgStoreT = std.DoublyLinkedList([]u8);
 const Receiver = tp.Receiver(*Self);
@@ -79,12 +81,23 @@ fn store_reset(self: *Self) void {
 
 fn receive(self: *Self, from: tp.pid_ref, m: tp.message) tp.result {
     errdefer self.deinit();
-    if (try m.match(.{ "log", tp.more })) {
+    var output: []const u8 = undefined;
+    if (try m.match(.{ "log", "error", tp.string, "std.log", "->", tp.extract(&output) })) {
         if (self.subscriber) |subscriber| {
             subscriber.send_raw(m) catch {};
         } else {
             self.store(m);
         }
+        if (!self.no_stderr)
+            std.io.getStdErr().writer().print("{s}\n", .{output}) catch {};
+    } else if (try m.match(.{ "log", tp.string, tp.extract(&output) })) {
+        if (self.subscriber) |subscriber| {
+            subscriber.send_raw(m) catch {};
+        } else {
+            self.store(m);
+        }
+        if (!self.no_stdout)
+            std.io.getStdOut().writer().print("{s}\n", .{output}) catch {};
     } else if (try m.match(.{"subscribe"})) {
         // log("subscribed");
         if (self.subscriber) |*s| s.deinit();
@@ -95,6 +108,14 @@ fn receive(self: *Self, from: tp.pid_ref, m: tp.message) tp.result {
         if (self.subscriber) |*s| s.deinit();
         self.subscriber = null;
         self.store_reset();
+    } else if (try m.match(.{ "stdout", "enable" })) {
+        self.no_stdout = false;
+    } else if (try m.match(.{ "stdout", "disable" })) {
+        self.no_stdout = true;
+    } else if (try m.match(.{ "stderr", "enable" })) {
+        self.no_stderr = false;
+    } else if (try m.match(.{ "stderr", "disable" })) {
+        self.no_stderr = true;
     } else if (try m.match(.{"shutdown"})) {
         return tp.exit_normal();
     }
@@ -202,6 +223,14 @@ pub fn unsubscribe() tp.result {
     return tp.env.get().proc("log").send(.{"unsubscribe"});
 }
 
+pub fn stdout(state: enum { enable, disable }) void {
+    tp.env.get().proc("log").send(.{ "stdout", state }) catch {};
+}
+
+pub fn stderr(state: enum { enable, disable }) void {
+    tp.env.get().proc("log").send(.{ "stderr", state }) catch {};
+}
+
 var std_log_pid: ?tp.pid_ref = null;
 
 pub fn set_std_log_pid(pid: ?tp.pid_ref) void {
diff --git a/src/tui/tui.zig b/src/tui/tui.zig
index 5aa13f6..3a3e7c8 100644
--- a/src/tui/tui.zig
+++ b/src/tui/tui.zig
@@ -103,6 +103,8 @@ const InitError = error{
     keybind.LoadError;
 
 fn init(allocator: Allocator) InitError!*Self {
+    log.stdout(.disable);
+
     var conf, const conf_bufs = root.read_config(@import("config"), allocator);
 
     if (@hasDecl(renderer, "install_crash_handler") and conf.start_debugger_on_crash)
@@ -157,6 +159,8 @@ fn init(allocator: Allocator) InitError!*Self {
     self.rdr_.dispatch_event = dispatch_event;
     try self.rdr_.run();
 
+    log.stderr(.disable);
+
     try project_manager.start();
 
     try frame_clock.start();