From bb2effcd706b1257ef3c5c75d4d57cd9d119e5f4 Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Mon, 29 Apr 2024 20:06:34 -0400
Subject: [PATCH] Add ULD module

---
 src/lib.rs |  3 +++
 src/uld.rs | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 src/uld.rs

diff --git a/src/lib.rs b/src/lib.rs
index 1aa35aa..bb5c68d 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -126,3 +126,6 @@ pub mod dic;
 
 #[doc(hidden)]
 pub const PHYSIS_VERSION: &str = env!("CARGO_PKG_VERSION");
+
+/// Reading ULD files
+pub mod uld;
diff --git a/src/uld.rs b/src/uld.rs
new file mode 100644
index 0000000..cfe2b05
--- /dev/null
+++ b/src/uld.rs
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2024 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+use std::io::Cursor;
+
+use crate::ByteSpan;
+use binrw::binrw;
+use binrw::BinRead;
+
+#[binrw]
+#[derive(Debug)]
+#[brw(little)]
+struct UldHeader {
+    #[br(count = 4)]
+    #[bw(pad_size_to = 4)]
+    #[bw(map = |x : &String | x.as_bytes())]
+    #[br(map = | x: Vec<u8> | String::from_utf8(x).unwrap().trim_matches(char::from(0)).to_string())]
+    pub identifier: String,
+
+    #[br(count = 4)]
+    #[bw(pad_size_to = 4)]
+    #[bw(map = |x : &String | x.as_bytes())]
+    #[br(map = | x: Vec<u8> | String::from_utf8(x).unwrap().trim_matches(char::from(0)).to_string())]
+    pub version: String,
+
+    component_offset: u32,
+    widget_offset: u32
+}
+
+#[derive(Debug)]
+pub struct Uld {
+
+}
+
+impl Uld {
+    /// Reads an existing ULD file
+    pub fn from_existing(buffer: ByteSpan) -> Option<Self> {
+        let mut cursor = Cursor::new(buffer);
+        let header = UldHeader::read(&mut cursor).ok()?;
+
+        Some(Uld{})
+    }
+}