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abbie 2024-08-29 21:30:24 +01:00
commit 408c392c14
Signed by: threeoh6000
GPG key ID: 801FE4AD456E922C
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1
.gitignore vendored Normal file
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/target

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Cargo.lock generated Normal file
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7
Cargo.toml Normal file
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[package]
name = "caustic-trim"
version = "0.1.0"
edition = "2021"
[dependencies]
clap = { version = "4.5.16", features = ["derive"] }

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src/main.rs Normal file
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#![allow(unused)]
use std::fs::File;
use std::io::BufReader;
use std::io::prelude::*;
use clap::Parser;
/// Trims down caustic files that can be opened to save space or remove garbage.
#[derive(Parser, Debug)]
#[command(version, about, long_about = None)]
struct Args {
/// The files you want to trim.
#[arg(short, long, value_parser, num_args = 1.., value_delimiter = ' ')]
input: Vec<String>,
}
fn main() {
let args = Args::parse();
for file in args.input {
trim(file);
}
}
fn trim(fname: String) -> std::io::Result<()> {
let file = File::open(fname.clone())?;
let mut buf_reader = BufReader::new(file);
let mut buffer = [0; 1];
let mut contents: Vec<u8> = vec![];
let mut valid_magic_value = false;
loop {
let n = buf_reader.read(&mut buffer)?;
if n == 0 {
break;
}
contents.push(buffer[0]);
if contents.len() == 4 {
if contents[0] == 82 && contents[1] == 65 && contents[2] == 67 && contents[3] == 75 {
println!("Valid caustic file. Beginning trim.");
} else {
println!("Not a caustic file!");
break;
}
}
if contents[contents.len()-1] == 71 {
if contents[contents.len()-2] == 82 && contents[contents.len()-3] == 69 && contents[contents.len()-4] == 77 {
println!("Trim successful.");
valid_magic_value = true;
break;
}
}
}
if valid_magic_value {
let mut f2 = File::create(format!("trimmed-{}", fname))?;
f2.write_all(&contents);
}
Ok(())
}