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use std::error::Error;
use std::fmt;
use std::fs::File;
use std::io::{self, BufRead};
use std::num;
use std::path::Path;
use std::str;
pub struct Binary {
words: Vec<u32>,
}
#[derive(Debug)]
pub enum BinaryError {
Io(io::Error),
Utf8(str::Utf8Error),
ParseInt(num::ParseIntError),
}
impl fmt::Display for BinaryError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
BinaryError::Io(ref err) => err.fmt(f),
BinaryError::Utf8(ref err) => err.fmt(f),
BinaryError::ParseInt(ref err) => err.fmt(f),
}
}
}
impl Error for BinaryError {
fn description(&self) -> &str {
match *self {
BinaryError::Io(ref err) => err.description(),
BinaryError::Utf8(ref err) => err.description(),
BinaryError::ParseInt(ref err) => err.description(),
}
}
}
impl From<io::Error> for BinaryError {
fn from(err: io::Error) -> BinaryError {
BinaryError::Io(err)
}
}
impl From<str::Utf8Error> for BinaryError {
fn from(err: str::Utf8Error) -> BinaryError {
BinaryError::Utf8(err)
}
}
impl From<num::ParseIntError> for BinaryError {
fn from(err: num::ParseIntError) -> BinaryError {
BinaryError::ParseInt(err)
}
}
impl Binary {
pub fn new_from_hex_file(path: &Path) -> Result<Binary, BinaryError> {
let file = try!(File::open(path));
let file = io::BufReader::new(file);
let mut words: Vec<u32> = Vec::new();
for line in file.lines() {
let line = try!(line);
for bytes in line.as_bytes().chunks(8).rev() {
let word = try!(str::from_utf8(bytes));
words.push(try!(u32::from_str_radix(word, 16)));
}
}
Ok(Binary {
words: words,
})
}
}
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