60 lines
1.3 KiB
Rust
60 lines
1.3 KiB
Rust
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use std::{
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fs::File,
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io::{Read, Write},
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os::unix::io::FromRawFd
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};
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fn main() {
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nested::magic_header();
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eprintln!(" Parse MachineInt from String");
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nested::magic_header();
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eprintln!("
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$1: radix
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( ℕ )
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( PositionalInt 10 BigEndian )
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( Sequence ( Digit 10 ) )
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( Sequence UTF-8-Char )
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( Sequence MachineSyllab )
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");
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eprintln!("
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>0: n
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( ℕ )
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( PositionalInt $radix BigEndian )
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( Sequence ( Digit $radix ) )
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( Sequence UTF-8-Char )
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( Stream UTF-8-Char )
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( Stream MachineSyllab )
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");
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eprintln!("
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<1: n
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( ℕ )
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( MachineInt )
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( MachineWord )
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( Stream MachineSyllab )
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");
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nested::magic_header();
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let mut f0 = unsafe { File::from_raw_fd(0) };
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let mut f1 = unsafe { File::from_raw_fd(1) };
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let mut args = std::env::args();
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args.next().expect("Arg $0 missing!");
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let radix_str = args.next().expect("Arg $1 required!");
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let radix = u32::from_str_radix(&radix_str, 10).expect("could not parse radix");
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if radix > 16 {
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panic!("invalid radix! (radix<=16 required)");
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}
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let mut chars = Vec::new();
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f0.read_to_end(&mut chars).expect("");
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chars.retain(|c| (*c as char).is_alphanumeric());
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f1.write(&u64::from_str_radix(&String::from_utf8_lossy(&chars), radix).unwrap().to_le_bytes()).expect("");
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}
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