Add debug symbol support for disassembler

src/block.rs

@@ -45,6 +45,24 @@ impl Block {
         self.pointer = location;
         Ok(())
     }
+
+    pub fn read_string(&mut self) -> Result<String> {
+        let mut bytes = vec![];
+
+        loop {
+            let c = self.get()?;
+
+            if c == 0 {
+                return match String::from_utf8(bytes) {
+                    Ok(string) => Ok(string),
+                    _ => Err("Invalid string in block")
+                }
+            }
+
+            bytes.push(c);
+        }
+
+    }
 }
 
 impl ops::Index<usize> for Block {