ISO-8583

Iso8583 Message Parser (Serialize/Deserialize)

Initial ISO-8583 Message specs from YAML File

``` use std::fs::File; use std::io::prelude::*; use iso_msg::IsoMsg;

fn main() { //read yaml file into a string let file = File::open("spec1993.yml").unwrap(); let mut contents = String::new(); file.readtostring(&mut contents);

let handle = YamlSpec::new(&contents).unwrap();
assert_eq!(handle.get_handle().len(), 129);

let payload = "0100F2246481087088360000000000000004016123456717929985100300000000000013112042128251178162210581284001059006419310712815007743555555555555888Test Merchant         Richmond1    51USA011          N8402001010000000000014510002329467890120100  00054002140000000000012312340001080000000020120040001N 989";

let mut iso_msg = IsoMsg::new(&handle, payload.as_bytes());
let mut buffer = [0u8; 1024];

let res = iso_msg.get_field(0, &mut buffer);
assert_eq!(res.unwrap(), 4);
trace!("mti: {}", str::from_utf8(&buffer[..4]).unwrap());
assert_eq!(&buffer[..4], "0100".as_bytes());

}

```

Benchmarking

test iso_msg::tests::bench_iso_msg_from_bytearray ... bench: 1,805 ns/iter (+/- 47) test iso_msg::tests::bench_iso_msg_to_bytearray ... bench: 1,763 ns/iter (+/- 92) test iso_msg::tests::bench_iso_msg_to_from_bytearray ... bench: 3,627 ns/iter (+/- 72)