From 058572ab919205f3bea5595819726b7208ce23e0 Mon Sep 17 00:00:00 2001
From: Paul Campbell <pcampbell@kemitix.net>
Date: Fri, 20 Jul 2018 07:36:58 +0100
Subject: [PATCH] HeadWriter: avoid the Law of Demeter

---
 .../net/kemitix/gitdb/impl/HeadWriter.java    | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/main/java/net/kemitix/gitdb/impl/HeadWriter.java b/src/main/java/net/kemitix/gitdb/impl/HeadWriter.java
index c9d6351..f7f668d 100644
--- a/src/main/java/net/kemitix/gitdb/impl/HeadWriter.java
+++ b/src/main/java/net/kemitix/gitdb/impl/HeadWriter.java
@@ -27,6 +27,7 @@ import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.Repository;
 
+import java.io.File;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -49,15 +50,23 @@ class HeadWriter {
      * @return the Ref of the new branch
      */
     Result<Ref> write(final String branchName, final ObjectId commitId) {
-        final Path branchRefPath = repository
-                .getDirectory()
-                .toPath()
-                .resolve(branchName)
-                .toAbsolutePath();
+        final Path branchRefPath = branchRefPath(branchName).toAbsolutePath();
         final byte[] commitIdBytes = commitId.name().getBytes(StandardCharsets.UTF_8);
         return Result.of(() -> {
             Files.write(branchRefPath, commitIdBytes);
             return repository.findRef(branchName);
         });
     }
+
+    private Path branchRefPath(String branchName) {
+        return gitDirPath().resolve(branchName);
+    }
+
+    private Path gitDirPath() {
+        return gitDir().toPath();
+    }
+
+    private File gitDir() {
+        return repository.getDirectory();
+    }
 }