How to Open a folder or file and if it doesn't exists create the folder/file

Help
1

So I’m working on a program that needs to open a folder and if the folder doesn’t exists it creates it, but I’m stuck as it is. this is my code.

pub fn setProjectHome(io: std.Io, env: *std.process.Environ.Map) !void {
    const home_env = env.get("HOME") orelse return error.NoHomeDirectory;
    const home_dir = try std.Io.Dir.openDirAbsolute(io, home_env, .{});
    defer home_dir.close(io);

    const zproj_dir = home_dir.openDir(io, ".config/zproj", .{}) catch |err| switch (err) {
        error.FileNotFound => home_dir.createDir(io, ".config/zproj", .default_dir) catch |create_err| switch (create_err) {
            error.PathAlreadyExists => std.debug.print("Project Path already exists", .{}),
            else => std.debug.print("Error: {any}", .{create_err}),
        },
        else => std.debug.print("Error: {any}", .{err}),
    };
    defer zproj_dir.close(io);

    const zproj_config_file = zproj_dir.openFile(io, "config.txt", .{}) catch |err| switch (err) {
        error.PathAlreadyExists => zproj_dir.createFile(io, "config.txt", .{}),
        else => std.debug.print("Error: {any}", .{err}),
    };
    defer zproj_config_file.close(io);

    var buffer: [1024]u8 = undefined;
    _ = try zproj_config_file.readPositionalAll(io, &buffer, 0);
}

I would like some help please and I’m also using zig 0.16 by the way. Thank you :folded_hands:

PS: You can ignore the buffer file part

2

What’s got you stuck, that seems sensible enough?

If not, may be best to simply “ensure” the directory exists first with a call to create and handle the error.

3

That’s what std.Io.Dir.createDirPathOpen is for. Create a directory if it does not already exist, and give you the directory handle for performing file operations inside it.

4

This is actually sensible. I’ve been coding for hours now. My brain feels like mush such that I didn’t see such an obvious answer :smiling_face_with_tear:

Thank you

5

Oh okay. Thank you very much