1 #![feature(str_checked_slicing)] 2 3 use std::fs::File; 4 use std::io::{BufRead, BufReader, Write}; 5 6 fn main() { 7 let input = File::open("unifont.hex").unwrap(); 8 let mut output = File::create("unifont.font").unwrap(); 9 10 let mut count = 0; 11 for line_res in BufReader::new(input).lines() { 12 let line = line_res.unwrap(); 13 14 let mut parts = line.split(":"); 15 let num = u32::from_str_radix(parts.next().unwrap(), 16).unwrap(); 16 17 while count < num { 18 output.write(&[0; 16]).unwrap(); 19 count += 1; 20 } 21 22 assert_eq!(num, count); 23 24 let mut data = [0; 16]; 25 let data_part = parts.next().unwrap(); 26 for i in 0..data.len() { 27 let string = data_part.get(i * 2 .. i * 2 + 2).unwrap_or("00"); 28 data[i] = u8::from_str_radix(string, 16).unwrap(); 29 } 30 println!("{:>04X}:{:?}", num, data); 31 32 output.write(&data).unwrap(); 33 count += 1; 34 } 35 } 36