main16.rs

main16.rs

use std::process::Command;
use std::path::Path;
use std::fs::read_dir;
use std::thread;
use std::sync::Arc;
use crossbeam::scope;

fn optimize_pdf(pdf_path: &Path) {
    let output_path = pdf_path.with_name(format!("optimized_{}", pdf_path.file_name().unwrap().to_str().unwrap()));
    let mut cmd = Command::new("gs");
    cmd.arg("-sDEVICE=pdfwrite");
    cmd.arg("-dNOPAUSE");
    cmd.arg("-dBATCH");
    cmd.arg("-dQUIET");
    cmd.arg(format!("-sOutputFile={}", output_path.display()));
    cmd.arg(pdf_path.display());
    cmd.spawn().unwrap().wait().unwrap();
}

fn main() {
    let mut pdf_files = Vec::new();
    for entry in read_dir(".").unwrap() {
        let entry = entry.unwrap();
        let path = entry.path();
        if path.extension().unwrap() == "pdf" {
            pdf_files.push(path);
        }
    }
    let pdf_files = Arc::new(pdf_files);
    scope::spawn(move || {
        for pdf_file in pdf_files.iter() {
            optimize_pdf(pdf_file);
        }
    }).unwrap();
}