pdfluent-lopdf 0.39.4

use std::collections::HashSet;
use std::env;
use std::fs;

fn main() {
    let path = env::args().nth(1).expect("usage: test_decompress <pdf>");
    let data = fs::read(&path).expect("read");
    let doc = pdfluent_lopdf::Document::load_mem(&data).expect("load");

    let mut success = 0;
    let mut fail = 0;
    let mut filters_seen = HashSet::new();

    for (&id, obj) in &doc.objects {
        if let pdfluent_lopdf::Object::Stream(ref stream) = *obj {
            if let Ok(filter_list) = stream.filters() {
                for f in &filter_list {
                    let name = String::from_utf8_lossy(f).to_string();
                    filters_seen.insert(name);
                }
                let mut s = stream.clone();
                match s.decompress() {
                    Ok(_) => success += 1,
                    Err(e) => {
                        let filter_names: Vec<_> = filter_list
                            .iter()
                            .map(|f| String::from_utf8_lossy(f).to_string())
                            .collect();
                        eprintln!("  FAIL {:?}: {} (filters: {:?})", id, e, filter_names);
                        fail += 1;
                    }
                }
            }
        }
    }

    println!(
        "{}: {} ok, {} fail. Filters: {:?}",
        path, success, fail, filters_seen
    );
}