fix: use required-features for examples

Cargo.toml

@@ -52,3 +52,19 @@ harness = false
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "docsrs"]
+
+[[example]]
+name = "custom"
+required-features = ["image"]
+
+[[example]]
+name = "embed"
+required-features = ["image"]
+
+[[example]]
+name = "image"
+required-features = ["image"]
+
+[[example]]
+name = "svg"
+required-features = ["svg"]

examples/custom.rs

@@ -1,4 +1,3 @@
-#[cfg(all(feature = "image", feature = "svg"))]
 fn main() {
     use fast_qr::{
         convert::{image::ImageBuilder, Builder, Shape},
@@ -38,8 +37,3 @@ fn main() {
         .background_color([255, 255, 255, 255])
         .to_file(&qrcode, "custom.png");
 }
-
-#[cfg(not(feature = "image"))]
-fn main() {
-    compile_error!("Please enable the `image` features.");
-}

examples/embed.rs

@@ -1,4 +1,3 @@
-#[cfg(all(feature = "image", feature = "svg"))]
 fn main() {
     use fast_qr::{
         convert::{image::ImageBuilder, Builder, ImageBackgroundShape, Shape},
@@ -23,8 +22,3 @@ fn main() {
         .image_background_shape(ImageBackgroundShape::Square)
         .to_file(&qrcode, "embed.png");
 }
-
-#[cfg(not(feature = "image"))]
-fn main() {
-    compile_error!("Please enable the `image` features.");
-}

examples/image.rs

@@ -1,4 +1,3 @@
-#[cfg(feature = "image")]
 fn main() {
     use fast_qr::{
         convert::{image::ImageBuilder, Builder, Shape},
@@ -24,8 +23,3 @@ fn main() {
         .background_color([255, 255, 255, 255]) // opaque
         .to_bytes(&qrcode);
 }
-
-#[cfg(not(feature = "image"))]
-fn main() {
-    compile_error!("Please enable the `image` features.");
-}

examples/svg.rs

@@ -1,4 +1,3 @@
-#[cfg(feature = "svg")]
 fn main() {
     use fast_qr::{
         convert::{svg::SvgBuilder, Builder, Shape},
@@ -15,8 +14,3 @@ fn main() {
         .shape(Shape::RoundedSquare)
         .to_file(&qrcode, "svg.svg");
 }
-
-#[cfg(not(feature = "svg"))]
-fn main() {
-    eprintln!("Please enable the `svg` features.")
-}