goto dir: dont use chdir

pick.zig

@@ -50,21 +50,18 @@ pub const Ctx = struct {
             .path = try gpa.alloc(u8, std.fs.MAX_PATH_BYTES),
             .filename = try gpa.alloc(u8, std.fs.MAX_PATH_BYTES),
         };
-        ret.path.len = 0;
+        const path = ret.path[0..std.fs.MAX_PATH_BYTES];
+        ret.path = try std.os.realpath(".", path);
         ret.filename.len = 0;
         try ret.list_files();
         return ret;
     }
 
     pub fn deinit(ctx: *Ctx) void {
-        for (ctx.entries.items) |entry| {
-            gpa.free(entry.name);
-        }
+        for (ctx.entries.items) |entry| gpa.free(entry.name);
         ctx.entries.deinit(gpa);
-
-        @setRuntimeSafety(false);
-        gpa.free(ctx.filename[0..std.fs.MAX_PATH_BYTES]);
-        gpa.free(ctx.path[0..std.fs.MAX_PATH_BYTES]);
+        gpa.free(ctx.filename.ptr[0..std.fs.MAX_PATH_BYTES]);
+        gpa.free(ctx.path.ptr[0..std.fs.MAX_PATH_BYTES]);
     }
 
     const bg = dvui.Options{
@@ -79,7 +76,7 @@ pub const Ctx = struct {
 
     pub const ExitStatus = enum { ok, exit };
     pub fn frame(ctx: *Ctx) !ExitStatus {
-        var box = try dvui.box(@src(), .vertical, bg.override(.{ .expand = .both }));
+        const box = try dvui.box(@src(), .vertical, bg.override(.{ .expand = .both }));
         defer box.deinit();
 
         try ctx.draw_top_path();
@@ -90,19 +87,13 @@ pub const Ctx = struct {
     }
 
     pub fn list_files(ctx: *Ctx) !void {
-        const path = @as([*]u8, @ptrCast(ctx.path))[0..std.fs.MAX_PATH_BYTES];
-        ctx.path = try std.os.realpath(".", path);
-
-        const cwd = std.fs.cwd();
-        var iterable = try cwd.openIterableDir(".", .{});
-        defer iterable.close();
-        var iterator = iterable.iterate();
-
-        for (ctx.entries.items) |entry| {
-            gpa.free(entry.name);
-        }
+        for (ctx.entries.items) |entry| gpa.free(entry.name);
         ctx.entries.clearRetainingCapacity();
 
+        var dir = try std.fs.openIterableDirAbsolute(ctx.path, .{});
+        defer dir.close();
+        var iterator = dir.iterate();
+
         while (try iterator.next()) |iter_entry| {
             const entry = try ctx.entries.addOne(gpa);
             entry.name = try gpa.dupe(u8, iter_entry.name);
@@ -128,12 +119,29 @@ pub const Ctx = struct {
         defer box.deinit();
 
         if (try dvui.button(@src(), "..", opts)) {
-            try std.os.chdir("..");
-            try ctx.list_files();
+            try ctx.goto("..");
         }
 
-        const te = try dvui.textEntry(@src(), .{ .text = ctx.path }, bg);
-        defer te.deinit();
+        const button_pressed = try dvui.button(@src(), "go", opts.override(.{ .gravity_x = 1 }));
+        if (button_pressed) {
+            try ctx.goto(ctx.path);
+        }
+
+        const text = try dvui.textEntry(@src(), .{ .text = ctx.path }, bg);
+        defer text.deinit();
+    }
+
+    fn goto(ctx: *Ctx, dir: []const u8) !void {
+        var tmp_buf = std.mem.zeroes([std.fs.MAX_PATH_BYTES]u8);
+        var tmp = std.heap.FixedBufferAllocator.init(&tmp_buf);
+
+        const path = try std.fs.path.resolve(tmp.allocator(), &.{ ctx.path, dir });
+        ctx.path.len = path.len;
+
+        const buf = ctx.path.ptr[0..std.fs.MAX_PATH_BYTES];
+        @memcpy(buf, &tmp_buf);
+
+        try ctx.list_files();
     }
 
     fn draw_bottom_filename(ctx: *Ctx) !?ExitStatus {
@@ -211,8 +219,7 @@ pub const Ctx = struct {
 
             if (clicked) switch (entry.kind) {
                 .directory => {
-                    try std.os.chdir(entry.name);
-                    try ctx.list_files();
+                    try ctx.goto(entry.name);
                     break :files;
                 },
                 else => {