Added file input + stdin support

+ Files/stdin input can be binary or ascii
+ Handles piping from other programs
+ Misc test fixes
+ Updated readme
+ clippy + fmt

src/main.rs

@@ -42,6 +42,12 @@ pub struct Args {
     #[structopt(help = "Base of the input values", short = "b", long = "base")]
     base: Option<u32>,
 
+    #[structopt(help = "Input data from file", short = "f", long = "file")]
+    input_file: Option<PathBuf>,
+
+    #[structopt(help = "Input data from stdin", short = "s", long = "stdin")]
+    input_stdin: bool,
+
     #[structopt(help = "Format to parse data as")]
     format: String,
 
@@ -56,7 +62,14 @@ fn init() -> Result<(Vec<u8>, Format), FormatyError> {
 
     let format = config.get_format(&args.format)?;
 
-    let data = args.input_type.parse_input(args.data, args.base)?;
+    let data = if args.input_stdin {
+        args.input_type.parse_stdin(args.base)?
+    } else if let Some(input_file) = args.input_file {
+        args.input_type.parse_file(&input_file, args.base)?
+    } else {
+        args.input_type.parse_arg_input(args.data, args.base)?
+    };
+
     Ok((data, format))
 }