Add common functions for converting bool back and forth from u8/16

Sort of unnecessary, but these are also tested.

src/chardat.rs

@@ -6,6 +6,7 @@ use std::io::{BufWriter, Cursor};
 use binrw::{BinRead, BinWrite};
 use binrw::binrw;
 use crate::{ByteBuffer, ByteSpan};
+use crate::common_file_operations::{read_bool_from, write_bool_as};
 
 use crate::race::{Gender, Race, Subrace};
 
@@ -136,8 +137,8 @@ pub struct CharacterData { // version 4
     pub hair: u8,
 
     /// If hair highlights are enabled for this character.
-    #[br(map = | x: u8 | x != 0 )]
-    #[bw(map = | x: &bool | if *x { 1u8 } else { 0u8 } )]
+    #[br(map = read_bool_from::<u8>)]
+    #[bw(map = write_bool_as::<u8>)]
     pub enable_highlights: bool,
 
     /// The character's skin tone.

src/common_file_operations.rs

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: 2024 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+pub(crate) fn read_bool_from<T: std::convert::From<u8> + std::cmp::PartialEq>(x: T) -> bool {
+    x == T::from(1u8)
+}
+
+pub(crate) fn write_bool_as<T: std::convert::From<u8>>(x: &bool) -> T {
+    if *x { T::from(1u8) } else { T::from(0u8) }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::io::Cursor;
+    use crate::common_file_operations::{read_bool_from, write_bool_as};
+    use crate::model::MDL;
+
+    const DATA: [u8; 2] = [0u8, 1u8];
+
+    // TODO: add tests for u16
+    
+    #[test]
+    fn read_bool_u8() {
+        assert!(!read_bool_from::<u8>(DATA[0]));
+        assert!(read_bool_from::<u8>(DATA[1]));
+    }
+
+    #[test]
+    fn write_bool_u8() {
+        assert_eq!(write_bool_as::<u8>(&false), DATA[0]);
+        assert_eq!(write_bool_as::<u8>(&true), DATA[1]);
+    }
+}

src/dat.rs

@@ -12,6 +12,7 @@ use crate::ByteBuffer;
 #[cfg(feature = "visual_data")]
 use crate::model::ModelFileHeader;
 use crate::sqpack::read_data_block;
+use crate::common_file_operations::read_bool_from;
 
 #[binrw]
 #[brw(repr = i32)]
@@ -94,10 +95,10 @@ pub struct ModelFileBlock {
     pub material_num: u16,
     pub num_lods: u8,
 
-    #[br(map = | x: u8 | x != 0)]
+    #[br(map = read_bool_from::<u8>)]
     pub index_buffer_streaming_enabled: bool,
     #[brw(pad_after = 1)]
-    #[br(map = | x: u8 | x != 0)]
+    #[br(map = read_bool_from::<u8>)]
     pub edge_geometry_enabled: bool,
 }
 

src/lib.rs

@@ -119,5 +119,7 @@ pub mod lgb;
 #[cfg(feature = "visual_data")]
 pub mod tera;
 
+mod common_file_operations;
+
 #[doc(hidden)]
 pub const PHYSIS_VERSION: &str = env!("CARGO_PKG_VERSION");

src/model.rs

@@ -8,6 +8,7 @@ use binrw::{binrw, BinWrite, BinWriterExt};
 use binrw::BinRead;
 use binrw::BinReaderExt;
 use crate::{ByteBuffer, ByteSpan};
+use crate::common_file_operations::{read_bool_from, write_bool_as};
 use crate::model_vertex_declarations::{vertex_element_parser, VERTEX_ELEMENT_SIZE, vertex_element_writer, VertexDeclaration, VertexType, VertexUsage};
 
 pub const NUM_VERTICES: u32 = 17;
@@ -31,11 +32,11 @@ pub struct ModelFileHeader {
 
     pub lod_count: u8,
 
-    #[br(map = | x: u8 | x != 0)]
-    #[bw(map = | x: & bool | -> u8 { if * x { 1 } else { 0 } })]
+    #[br(map = read_bool_from::<u8>)]
+    #[bw(map = write_bool_as::<u8>)]
     pub index_buffer_streaming_enabled: bool,
-    #[br(map = | x: u8 | x != 0)]
-    #[bw(map = | x: & bool | -> u8 { if * x { 1 } else { 0 } })]
+    #[br(map = read_bool_from::<u8>)]
+    #[bw(map = write_bool_as::<u8>)]
     #[brw(pad_after = 1)]
     pub has_edge_geometry: bool,
 }

src/patch.rs

@@ -14,6 +14,7 @@ use tracing::{debug, warn};
 
 use crate::common::{get_platform_string, Platform, Region};
 use crate::sqpack::read_data_block_patch;
+use crate::common_file_operations::read_bool_from;
 
 #[binread]
 #[derive(Debug)]
@@ -269,7 +270,7 @@ struct SqpkTargetInfo {
     #[br(pad_before = 3)]
     platform: Platform,
     region: Region,
-    #[br(map = | x : u16 | x == 1)]
+    #[br(map = read_bool_from::<u16>)]
     is_debug: bool,
     version: u16,
     #[br(little)]
@@ -292,7 +293,7 @@ enum SqpkIndexCommand {
 #[br(big)]
 struct SqpkIndex {
     command: SqpkIndexCommand,
-    #[br(map = | x : u8 | x == 1)]
+    #[br(map = read_bool_from::<u8>)]
     is_synonym: bool,
 
     #[br(pad_before = 1)]