config: support loading from "Application Support" directory on macOS

src/os/macos.zig

@@ -0,0 +1,54 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const assert = std.debug.assert;
+const objc = @import("objc");
+const Allocator = std.mem.Allocator;
+
+pub const NSOperatingSystemVersion = extern struct {
+    major: i64,
+    minor: i64,
+    patch: i64,
+};
+
+/// Verifies that the running macOS system version is at least the given version.
+pub fn isAtLeastVersion(major: i64, minor: i64, patch: i64) bool {
+    assert(builtin.target.isDarwin());
+
+    const NSProcessInfo = objc.getClass("NSProcessInfo").?;
+    const info = NSProcessInfo.msgSend(objc.Object, objc.sel("processInfo"), .{});
+    return info.msgSend(bool, objc.sel("isOperatingSystemAtLeastVersion:"), .{
+        NSOperatingSystemVersion{ .major = major, .minor = minor, .patch = patch },
+    });
+}
+
+pub const NSSearchPathDirectory = enum(c_ulong) {
+    NSApplicationSupportDirectory = 14,
+};
+
+pub const NSSearchPathDomainMask = enum(c_ulong) {
+    NSUserDomainMask = 1,
+};
+
+pub fn getAppSupportDir(alloc: Allocator, sub_path: []const u8) ![]u8 {
+    assert(builtin.target.isDarwin());
+
+    const err: ?*anyopaque = undefined;
+    const NSFileManager = objc.getClass("NSFileManager").?;
+    const manager = NSFileManager.msgSend(objc.Object, objc.sel("defaultManager"), .{});
+    const url = manager.msgSend(
+        objc.Object,
+        objc.sel("URLForDirectory:inDomain:appropriateForURL:create:error:"),
+        .{
+            NSSearchPathDirectory.NSApplicationSupportDirectory,
+            NSSearchPathDomainMask.NSUserDomainMask,
+            @as(?*anyopaque, null),
+            true,
+            &err,
+        },
+    );
+    const path = url.getProperty(objc.Object, "path");
+    const c_str = path.getProperty([*:0]const u8, "UTF8String");
+    const app_support_dir = std.mem.sliceTo(c_str, 0);
+
+    return try std.fs.path.join(alloc, &.{ app_support_dir, "com.mitchellh.ghostty", sub_path });
+}

src/os/macos_version.zig

@@ -1,21 +0,0 @@
-const std = @import("std");
-const builtin = @import("builtin");
-const assert = std.debug.assert;
-const objc = @import("objc");
-
-/// Verifies that the running macOS system version is at least the given version.
-pub fn macosVersionAtLeast(major: i64, minor: i64, patch: i64) bool {
-    assert(builtin.target.isDarwin());
-
-    const NSProcessInfo = objc.getClass("NSProcessInfo").?;
-    const info = NSProcessInfo.msgSend(objc.Object, objc.sel("processInfo"), .{});
-    return info.msgSend(bool, objc.sel("isOperatingSystemAtLeastVersion:"), .{
-        NSOperatingSystemVersion{ .major = major, .minor = minor, .patch = patch },
-    });
-}
-
-pub const NSOperatingSystemVersion = extern struct {
-    major: i64,
-    minor: i64,
-    patch: i64,
-};

src/os/main.zig

@@ -8,7 +8,6 @@ const file = @import("file.zig");
 const flatpak = @import("flatpak.zig");
 const homedir = @import("homedir.zig");
 const locale = @import("locale.zig");
-const macos_version = @import("macos_version.zig");
 const mouse = @import("mouse.zig");
 const openpkg = @import("open.zig");
 const pipepkg = @import("pipe.zig");
@@ -21,6 +20,7 @@ pub const hostname = @import("hostname.zig");
 pub const passwd = @import("passwd.zig");
 pub const xdg = @import("xdg.zig");
 pub const windows = @import("windows.zig");
+pub const macos = @import("macos.zig");
 
 // Functions and types
 pub const CFReleaseThread = @import("cf_release_thread.zig");
@@ -37,7 +37,6 @@ pub const freeTmpDir = file.freeTmpDir;
 pub const isFlatpak = flatpak.isFlatpak;
 pub const home = homedir.home;
 pub const ensureLocale = locale.ensureLocale;
-pub const macosVersionAtLeast = macos_version.macosVersionAtLeast;
 pub const clickInterval = mouse.clickInterval;
 pub const open = openpkg.open;
 pub const pipe = pipepkg.pipe;