Add runnable examples for reading & writing

README.md

@@ -20,9 +20,11 @@ use std::fs::File;
 let file = File::open("file.swf").unwrap();
 let reader = BufReader::new(file);
 let swf = swf::read_swf(reader).unwrap();
-println!("The SWF has {} frames", swf.num_frames);
+println!("The SWF has {} frames", swf.header.num_frames);
 ```
 
+Try `cargo run --example reading` in this repository to run this example.
+
 ## Writing
 
 ```rust,no_run
@@ -48,6 +50,8 @@ let writer = std::io::BufWriter::new(file);
 swf::write_swf(&swf, writer).unwrap();
 ```
 
+Try `cargo run --example writing` in this repository to run this example.
+
 ## License
 
 Licensed under either of

examples/reading.rs

@@ -0,0 +1,10 @@
+use std::io::BufReader;
+use std::fs::File;
+
+fn main() {
+    let file = File::open("tests/swfs/SimpleRedBackground.swf").unwrap();
+	let reader = BufReader::new(file);
+	let swf = swf::read_swf(reader).unwrap();
+	println!("The SWF has {} frame(s).", swf.header.num_frames);
+	println!("The SWF has {} tag(s).", swf.tags.len());
+}

examples/writing.rs

@@ -0,0 +1,23 @@
+use swf::*;
+
+fn main() {
+	let swf = Swf {
+	    header: Header {
+	        version: 6,
+	        compression: Compression::Zlib,
+	        stage_size: Rectangle { 
+	            x_min: Twips::from_pixels(0.0), x_max: Twips::from_pixels(400.0),
+	            y_min: Twips::from_pixels(0.0), y_max: Twips::from_pixels(400.0)
+	        },
+	        frame_rate: 60.0,
+	        num_frames: 1,
+	    },
+	    tags: vec![
+	        Tag::SetBackgroundColor(Color { r: 255, g: 0, b: 0, a: 255 }),
+	        Tag::ShowFrame
+	    ]
+	};
+	let file = std::fs::File::create("tests/swfs/SimpleRedBackground.swf").unwrap();
+	let writer = std::io::BufWriter::new(file);
+	swf::write_swf(&swf, writer).unwrap();
+}