Allow exporting included background

(cherry picked from commit 0f6548cc8cb4fabec868a234488f064c12961cd8)

agb-image-converter/src/lib.rs

@@ -109,6 +109,7 @@ impl Parse for BackgroundGfxOption {
 
 struct IncludeBackgroundGfxInput {
     module_name: syn::Ident,
+    as_pub: bool,
     crate_prefix: String,
     transparent_colour: Colour,
     background_gfx_options: Vec<BackgroundGfxOption>,
@@ -126,6 +127,15 @@ impl Parse for IncludeBackgroundGfxInput {
             format_ident!("agb")
         };
 
+        let lookahead = input.lookahead1();
+
+        let as_pub = if lookahead.peek(Token![pub]) {
+            let _: Token![pub] = input.parse()?;
+            true
+        } else {
+            false
+        };
+
         let module_name: syn::Ident = input.parse()?;
         let _: Token![,] = input.parse()?;
 
@@ -146,6 +156,7 @@ impl Parse for IncludeBackgroundGfxInput {
 
         Ok(Self {
             module_name,
+            as_pub,
             crate_prefix: crate_prefix.to_string(),
             transparent_colour,
             background_gfx_options: background_gfx_options.into_iter().collect(),
@@ -186,11 +197,13 @@ pub fn include_background_gfx(input: TokenStream) -> TokenStream {
     let root = std::env::var("CARGO_MANIFEST_DIR").expect("Failed to get cargo manifest dir");
 
     let module_name = config.module_name.clone();
-    include_gfx_from_config(config, module_name, Path::new(&root))
+    let as_pub = config.as_pub.clone();
+    include_gfx_from_config(config, as_pub, module_name, Path::new(&root))
 }
 
 fn include_gfx_from_config(
     config: Box<dyn config::Config>,
+    as_pub: bool,
     module_name: syn::Ident,
     parent: &Path,
 ) -> TokenStream {
@@ -255,11 +268,21 @@ fn include_gfx_from_config(
     let palette_code =
         rust_generator::generate_palette_code(&optimisation_results, &config.crate_prefix());
 
-    let module = quote! {
-        mod #module_name {
-            #palette_code
+    let module = if as_pub {
+        quote! {
+            pub mod #module_name {
+                #palette_code
 
-            #(#image_code)*
+                #(#image_code)*
+            }
+        }
+    } else {
+        quote! {
+            mod #module_name {
+                #palette_code
+
+                #(#image_code)*
+            }
         }
     };