feat(rust/signed-doc): add subcommand to inspect cose sign from hex-encoded strings

Author: saibatizoku

rust/signed_doc/examples/cat-signed-doc.rs

@@ -20,24 +20,31 @@ enum Cli {
     /// Inspects COSE document
     Inspect {
         /// Path to the fully formed (should has at least one signature) COSE document
-        cose_sign: PathBuf,
+        cose_sign_path: PathBuf,
+    },
+    /// Inspect COSE document hex-formatted bytes
+    InspectBytes {
+        /// Hex-formatted COSE SIGN Bytes
+        cose_sign_str: String,
     },
 }
 
 impl Cli {
     /// Execute Cli command
     fn exec(self) -> anyhow::Result<()> {
-        match self {
-            Self::Inspect { cose_sign } => {
-                //
-                let mut cose_file = File::open(cose_sign)?;
+        let cose_bytes = match self {
+            Self::Inspect { cose_sign_path } => {
+                let mut cose_file = File::open(cose_sign_path)?;
                 let mut cose_file_bytes = Vec::new();
                 cose_file.read_to_end(&mut cose_file_bytes)?;
-                let cat_signed_doc: CatalystSignedDocument = cose_file_bytes.try_into()?;
-                println!("{cat_signed_doc}");
-                Ok(())
+                cose_file_bytes
             },
-        }
+            Self::InspectBytes { cose_sign_str } => hex::decode(&cose_sign_str)?,
+        };
+        println!("Bytes read:\n{}\n", hex::encode(&cose_bytes));
+        let cat_signed_doc: CatalystSignedDocument = cose_bytes.try_into()?;
+        println!("{cat_signed_doc}");
+        Ok(())
     }
 }