Add support for reading config data from a toml file

agb-image-converter/Cargo.lock

@@ -13,6 +13,8 @@ name = "agb_image_converter"
 version = "0.4.0"
 dependencies = [
  "image",
+ "serde",
+ "toml",
  "typed-builder",
 ]
 
@@ -166,6 +168,26 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "serde"
+version = "1.0.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec7505abeacaec74ae4778d9d9328fe5a5d04253220a85c4ee022239fc996d03"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "963a7dbc9895aeac7ac90e74f34a5d5261828f79df35cbed41e10189d3804d43"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.73"
@@ -177,6 +199,15 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "toml"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "typed-builder"
 version = "0.9.0"

agb-image-converter/Cargo.toml

@@ -8,4 +8,6 @@ description = "Library for converting graphics for use on the Game Boy Advance"
 
 [dependencies]
 image = { version = "0.23.14", default-features = false, features = [ "png", "bmp" ] }
-typed-builder = "0.9.0"
+typed-builder = "0.9.0"
+toml = "0.5.8"
+serde = { version = "1.0", features = ["derive"] }

agb-image-converter/src/config.rs

@@ -0,0 +1,96 @@
+use serde::Deserialize;
+use std::collections::HashMap;
+use std::fs;
+
+use crate::{TileSize, Colour};
+
+pub fn parse(filename: &str) -> Box<dyn Config> {
+    let config_toml = fs::read_to_string(filename).expect("Failed to read file");
+    
+    let config: ConfigV1 = toml::from_str(&config_toml).expect("Failed to parse file");
+
+    if config.version != "1.0" {
+        panic!("Expected version of {} to be 1.0, got {}", filename, config.version);
+    }
+
+    Box::new(config)
+}
+
+pub trait Config {
+    fn crate_prefix(&self) -> String;
+    fn images(&self) -> HashMap<String, &dyn Image>;
+}
+
+pub trait Image {
+    fn filename(&self) -> String;
+    fn transparent_colour(&self) -> Option<Colour>;
+    fn tilesize(&self) -> TileSize;
+}
+
+#[derive(Deserialize)]
+pub struct ConfigV1 {
+    version: String,
+    crate_prefix: Option<String>,
+
+    image: HashMap<String, ImageV1>,
+}
+
+impl Config for ConfigV1 {
+    fn crate_prefix(&self) -> String {
+        self.crate_prefix.clone().unwrap_or("agb".to_owned())
+    }
+
+    fn images(&self) -> HashMap<String, &dyn Image> {
+        self.image.iter()
+        .map(|(filename, image)| (
+            filename.clone(), image as &dyn Image
+        )).collect()
+    }
+}
+
+#[derive(Deserialize)]
+pub struct ImageV1 {
+    filename: String,
+    transparent_colour: Option<String>,
+    tile_size: TileSizeV1,
+}
+
+impl Image for ImageV1 {
+    fn filename(&self) -> String {
+        self.filename.clone()
+    }
+
+    fn transparent_colour(&self) -> Option<Colour> {
+        if let Some(colour) = &self.transparent_colour {
+            if colour.len() != 6 {
+                panic!("Expected colour to be 6 characters, got {}", colour);
+            }
+
+            let r = u8::from_str_radix(&colour[0..2], 16).unwrap();
+            let g = u8::from_str_radix(&colour[2..4], 16).unwrap();
+            let b = u8::from_str_radix(&colour[4..6], 16).unwrap();
+
+            return Some(Colour::from_rgb(r, g, b));
+        }
+
+        None
+    }
+
+    fn tilesize(&self) -> TileSize {
+        self.tile_size.into()
+    }
+}
+
+#[derive(Deserialize, Clone, Copy)]
+pub enum TileSizeV1 {
+    #[serde(rename = "8x8")]
+    Tile8,
+}
+
+impl Into<TileSize> for TileSizeV1 {
+    fn into(self) -> TileSize {
+        match self {
+            TileSizeV1::Tile8 => TileSize::Tile8,
+        }
+    }
+}

agb-image-converter/src/lib.rs

@@ -8,6 +8,7 @@ mod colour;
 mod image_loader;
 mod palette16;
 mod rust_generator;
+mod config;
 
 use image_loader::Image;
 

agb/Cargo.lock

@@ -21,6 +21,8 @@ name = "agb_image_converter"
 version = "0.4.0"
 dependencies = [
  "image",
+ "serde",
+ "toml",
  "typed-builder",
 ]
 
@@ -174,6 +176,26 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "serde"
+version = "1.0.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec7505abeacaec74ae4778d9d9328fe5a5d04253220a85c4ee022239fc996d03"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "963a7dbc9895aeac7ac90e74f34a5d5261828f79df35cbed41e10189d3804d43"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "syn"
 version = "1.0.73"
@@ -185,6 +207,15 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "toml"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "typed-builder"
 version = "0.9.0"