Start rebuilding with a cleanly-separated UI framework

zed/src/main.rs

@@ -0,0 +1,38 @@
+use std::fs;
+
+use fs::OpenOptions;
+use gpui::platform::{current as platform, App as _};
+use log::LevelFilter;
+use simplelog::SimpleLogger;
+
+fn main() {
+    init_logger();
+    platform::app()
+        .on_finish_launching(|| log::info!("finish launching"))
+        .run();
+}
+
+fn init_logger() {
+    let level = LevelFilter::Info;
+
+    if stdout_is_a_pty() {
+        SimpleLogger::init(level, Default::default()).expect("could not initialize logger");
+    } else {
+        let log_dir_path = dirs::home_dir()
+            .expect("could not locate home directory for logging")
+            .join("Library/Logs/");
+        let log_file_path = log_dir_path.join("Zed.log");
+        fs::create_dir_all(&log_dir_path).expect("could not create log directory");
+        let log_file = OpenOptions::new()
+            .create(true)
+            .append(true)
+            .open(log_file_path)
+            .expect("could not open logfile");
+        simplelog::WriteLogger::init(level, simplelog::Config::default(), log_file)
+            .expect("could not initialize logger");
+    }
+}
+
+fn stdout_is_a_pty() -> bool {
+    unsafe { libc::isatty(libc::STDOUT_FILENO as i32) != 0 }
+}