add day 2

1 files changed, 15 insertions, 0 deletions

diff --git a/day-2/util/file.zig b/day-2/util/file.zig
new file mode 100644
index 0000000..90849e9
--- /dev/null
+++ b/day-2/util/file.zig
@@ -0,0 +1,15 @@
+const std = @import("std");
+
+/// Reads an entire file into memory, caller owns the returned slice.
+pub fn slurp(allocator: std.mem.Allocator, file_path: []const u8) ![]u8 {
+    var path_buffer: [std.fs.MAX_PATH_BYTES]u8 = undefined;
+    const path = try std.fs.realpath(file_path, &path_buffer);
+
+    const file = try std.fs.openFileAbsolute(path, .{});
+    defer file.close();
+
+    return try file.readToEndAlloc(
+        allocator,
+        (try file.stat()).size,
+    );
+}