From 5b7cf1d6a370e704ce9c7b7e92e312501190cdb9 Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Sat, 6 Aug 2022 20:38:15 -0400
Subject: [PATCH] Add support for reading the file info format

I revisited this format, and discovered a lot of stuff I did wrong the
first time around when writing libxiv. Now that's fixed!
---
 src/fiin.rs | 39 +++++++++++++++++++++++++++++++++++++++
 src/lib.rs  |  5 ++++-
 2 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 src/fiin.rs

diff --git a/src/fiin.rs b/src/fiin.rs
new file mode 100644
index 0000000..65b0481
--- /dev/null
+++ b/src/fiin.rs
@@ -0,0 +1,39 @@
+use std::ffi::CString;
+use std::io::Cursor;
+use binrw::binread;
+use crate::gamedata::MemoryBuffer;
+use binrw::BinRead;
+
+#[binread]
+#[br(magic = b"FileInfo")]
+#[derive(Debug)]
+pub struct FileInfo {
+    #[br(pad_before = 20)]
+    #[br(temp)]
+    entries_size : i32,
+
+    #[br(pad_before = 992)]
+    #[br(count = entries_size / 96)]
+    entries : Vec<FIINEntry>
+}
+
+#[binread]
+#[derive(Debug)]
+pub struct FIINEntry {
+    file_size : i32,
+
+    #[br(pad_before = 4)]
+    #[br(count = 64)]
+    #[br(map = | x: Vec < u8 > | String::from_utf8(x).unwrap())]
+    file_name: String,
+
+    #[br(count = 24)]
+    sha1 : Vec<u8>
+}
+
+impl FileInfo {
+    pub fn from_existing(buffer : &MemoryBuffer) -> Option<FileInfo> {
+        let mut cursor = Cursor::new(buffer);
+        Some(FileInfo::read(&mut cursor).ok()?)
+    }
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index f05255a..e69877a 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -52,4 +52,7 @@ pub mod exh;
 pub mod exd;
 
 // Reading Havok XML sidecar files.
-pub mod skeleton;
\ No newline at end of file
+pub mod skeleton;
+
+// Reading file into files (FIIN).
+pub mod fiin;
\ No newline at end of file