add a .clang-format file (#9154)

src/SafeFile.h

@@ -10,41 +10,41 @@
  * This class provides 'safe'/paranoid file writing.
  *
  * Some of our filesystems (in particular the nrf52) may have bugs beneath our layer.  Therefore we want to
- * be very careful about how we write files.  This class provides a restricted (Stream only) writing API for writing to files.
+ * be very careful about how we write files.  This class provides a restricted (Stream only) writing API for writing to
+ * files.
  *
  * Notably:
  * - we keep a simple xor hash of all characters that were written.
  * - We do not allow seeking (because we want to maintain our hash)
- * - we provide an close() method which is similar to close but returns false if we were unable to successfully write the
- * file.  Also this method
- * - atomically replaces any old version of the file on the disk with our new file (after first rereading the file from the disk
- * to confirm the hash matches)
- * - Some files are super huge so we can't do the full atomic rename/copy (because of filesystem size limits).  If !fullAtomic
- * then we still do the readback to verify file is valid so higher level code can handle failures.
+ * - we provide an close() method which is similar to close but returns false if we were unable to successfully write
+ * the file.  Also this method
+ * - atomically replaces any old version of the file on the disk with our new file (after first rereading the file from
+ * the disk to confirm the hash matches)
+ * - Some files are super huge so we can't do the full atomic rename/copy (because of filesystem size limits).  If
+ * !fullAtomic then we still do the readback to verify file is valid so higher level code can handle failures.
  */
-class SafeFile : public Print
-{
-  public:
-    explicit SafeFile(char const *filepath, bool fullAtomic = false);
+class SafeFile : public Print {
+public:
+  explicit SafeFile(char const *filepath, bool fullAtomic = false);
 
-    virtual size_t write(uint8_t);
-    virtual size_t write(const uint8_t *buffer, size_t size);
+  virtual size_t write(uint8_t);
+  virtual size_t write(const uint8_t *buffer, size_t size);
 
-    /**
-     * Atomically close the file (deleting any old versions) and readback the contents to confirm the hash matches
-     *
-     * @return false for failure
-     */
-    bool close();
+  /**
+   * Atomically close the file (deleting any old versions) and readback the contents to confirm the hash matches
+   *
+   * @return false for failure
+   */
+  bool close();
 
-  private:
-    /// Read our (closed) tempfile back in and compare the hash
-    bool testReadback();
+private:
+  /// Read our (closed) tempfile back in and compare the hash
+  bool testReadback();
 
-    String filename;
-    File f;
-    bool fullAtomic;
-    uint8_t hash = 0;
+  String filename;
+  File f;
+  bool fullAtomic;
+  uint8_t hash = 0;
 };
 
 #endif