diff --git a/src/checks/osc.rs b/src/checks/osc.rs
index 86ca634..2140906 100644
--- a/src/checks/osc.rs
+++ b/src/checks/osc.rs
@@ -25,46 +25,32 @@
 use crate::checks::{CheckNotice, Checkable};
 use crate::model::onkostar_editor::OnkostarEditor;
 use std::fs;
-use std::fs::File;
-use std::io::{BufRead, BufReader};
 use std::path::Path;
 use std::str::FromStr;
 
-pub fn check(file: &Path) -> Vec<CheckNotice> {
-    let mut result = match File::open(file) {
-        Ok(file) => BufReader::new(file)
-            .lines()
-            .enumerate()
-            .flat_map(|(line, content)| match content {
-                Ok(content) => check_line(line, content),
-                _ => {
-                    return vec![CheckNotice::Error {
-                        description: "Cannot read line".to_string(),
-                        line: Some(line),
-                    }]
-                }
-            })
-            .collect::<Vec<_>>(),
-        _ => {
-            return vec![CheckNotice::Error {
-                description: "Kann Datei nicht lesen".to_string(),
-                line: None,
-            }]
-        }
-    };
-
-    let inner_checks = &mut match fs::read_to_string(file) {
-        Ok(content) => match OnkostarEditor::from_str(content.as_str()) {
-            Ok(data) => data.check(),
-            Err(err) => vec![CheckNotice::Error {
-                description: format!("Interner Fehler: {}", err),
-                line: None,
-            }],
-        },
+pub fn check_file(file: &Path) -> Vec<CheckNotice> {
+    match fs::read_to_string(file) {
+        Ok(content) => check(content),
         _ => vec![CheckNotice::Error {
             description: "Kann Datei nicht lesen".to_string(),
             line: None,
         }],
+    }
+}
+
+pub fn check(content: String) -> Vec<CheckNotice> {
+    let mut result = content
+        .lines()
+        .enumerate()
+        .flat_map(|(line, content)| check_line(line, content.to_string()))
+        .collect::<Vec<_>>();
+
+    let inner_checks = &mut match OnkostarEditor::from_str(content.as_str()) {
+        Ok(data) => data.check(),
+        Err(err) => vec![CheckNotice::Error {
+            description: format!("Interner Fehler: {}", err),
+            line: None,
+        }],
     };
     result.append(inner_checks);
 
diff --git a/src/main.rs b/src/main.rs
index 217cbe8..33502d4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -32,7 +32,7 @@ use std::path::{Path, PathBuf};
 use std::str::FromStr;
 
 use crate::checks::osc::check;
-use crate::checks::{print_checks, CheckNotice};
+use crate::checks::print_checks;
 use clap::Parser;
 use console::style;
 use dialoguer::Confirm;