const std = @import("std");

const Allocator = std.mem.Allocator;

pub fn resolvePath(allocator: Allocator, name: []const u8) ![]u8 {
    return std.fs.cwd().realpathAlloc(allocator, name) catch |err| switch (err) {
        error.FileNotFound => if (name.len == 0) {
            return error.FileNotFound;
        } else if (name[0] == std.fs.path.sep) {
            // Already is an absolute path
            return allocator.dupe(u8, name);
        } else {
            // TODO: if (name[0] == '~')
            const cwd = try std.process.getCwdAlloc(allocator);
            defer allocator.free(cwd);

            return std.fmt.allocPrint(allocator, "{s}{s}{s}", .{cwd, std.fs.path.sep_str, name});
        },
        else => return err,
    };
}