Add exec command and store wlr socket

.gitignore

@@ -5,3 +5,4 @@ zig-out/
 /build/
 /build-*/
 /docgen_tmp/
+vgcore*

flake.nix

@@ -81,6 +81,8 @@
                   if inShell
                   then [
                     zls-overlay.packages.${system}.default
+                    valgrind
+                    gdb
                   ]
                   else []
                 );

src/commands.zig

@@ -0,0 +1,13 @@
+const std = @import("std");
+const gpa = std.heap.c_allocator;
+
+const serv = @import("server.zig");
+
+pub fn exec(server: *serv.Server, cmd: [:0]const u8) !void {
+    var child = std.ChildProcess.init(&[_][]const u8{ "/bin/sh", "-c", cmd }, gpa);
+    var env_map = try std.process.getEnvMap(gpa);
+    defer env_map.deinit();
+    try env_map.put("WAYLAND_DISPLAY", server.socket);
+    child.env_map = &env_map;
+    try child.spawn();
+}

src/server.zig

@@ -20,6 +20,7 @@ pub const Server = struct {
     cursor: *wlr.Cursor,
     cursor_mgr: *wlr.XcursorManager,
 
+    socket: [:0]const u8,
     events: events.Events,
 
     pub fn init(self: *Server) !void {
@@ -29,6 +30,8 @@ pub const Server = struct {
         const output_layout = try wlr.OutputLayout.create();
         const scene = try wlr.Scene.create();
 
+        var buf: [11]u8 = undefined;
+
         self.* = Server{
             .wl_server = wl_server,
             .backend = backend,
@@ -42,6 +45,7 @@ pub const Server = struct {
             .cursor = try wlr.Cursor.create(),
             .cursor_mgr = try wlr.XcursorManager.create(null, 24),
             .events = undefined,
+            .socket = try wl_server.addSocketAuto(&buf),
         };
         errdefer self.destroy();