Improve error messages for not finding LBA sources

src/Tools/tool_helper/src/lib.rs

@@ -184,11 +184,18 @@ pub fn input_to_vec(input: Input) -> Result<Vec<u8>, Error> {
 
 pub fn read_file(file_path: &PathBuf) -> Result<Vec<u8>, Error> {
     match std::fs::read(file_path) {
-        Ok(data) => {
-            Ok(data)
-        },
-        Err(error) => {
-            Err(Error::from_text(format!("Failed reading file {} with error: \"{}\"", file_path.display(), error)))
-        }
+        Ok(data)   => Ok(data),
+        Err(error) => create_file_read_error(file_path, error),
     }
+}
+
+pub fn read_file_to_string(file_path: &PathBuf) -> Result<String, Error> {
+    match std::fs::read_to_string(file_path) {
+        Ok(string) => Ok(string),
+        Err(error) => create_file_read_error(file_path, error),
+    }
+}
+
+fn create_file_read_error<T>(file_path: &PathBuf, error: std::io::Error) -> Result<T, Error> {
+    Err(Error::from_text(format!("Failed reading file {} with error: \"{}\"", file_path.display(), error)))
 }