more progress, roadmap, wip

crates/cos/examples/cosinfo.rs

@@ -0,0 +1,17 @@
+//! Print how a file was opened: revisions, repair notes, trailer. `cargo run -p printcraft-cos --example cosinfo f.pdf`
+fn main() {
+    let path = std::env::args().nth(1).expect("usage: cosinfo <file.pdf>");
+    let bytes = std::sync::Arc::new(std::fs::read(&path).expect("readable"));
+    match printcraft_cos::Document::open(bytes) {
+        Ok(doc) => {
+            println!("version {}  revisions {:?}", doc.version(), doc.revisions());
+            for r in doc.repair_log() {
+                println!("repair: {r}");
+            }
+            let mut t = Vec::new();
+            printcraft_cos::serialize(&printcraft_cos::Object::Dict(doc.trailer().clone()), &mut t);
+            println!("trailer {}", String::from_utf8_lossy(&t));
+        }
+        Err(e) => println!("error: {e}"),
+    }
+}