(77d1794a) Tester's build January 10th, 2020

Libraries/webm_mem_playback/libwebm/common/indent.h

@@ -0,0 +1,48 @@
+/*
+ *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef LIBWEBM_COMMON_INDENT_H_
+#define LIBWEBM_COMMON_INDENT_H_
+
+#include <string>
+
+#include "mkvmuxer/mkvmuxertypes.h"
+
+namespace libwebm {
+
+const int kIncreaseIndent = 2;
+const int kDecreaseIndent = -2;
+
+// Used for formatting output so objects only have to keep track of spacing
+// within their scope.
+class Indent {
+ public:
+  explicit Indent(int indent);
+
+  // Changes the number of spaces output. The value adjusted is relative to
+  // |indent_|.
+  void Adjust(int indent);
+
+  std::string indent_str() const { return indent_str_; }
+
+ private:
+  // Called after |indent_| is changed. This will set |indent_str_| to the
+  // proper number of spaces.
+  void Update();
+
+  int indent_;
+  std::string indent_str_;
+
+  LIBWEBM_DISALLOW_COPY_AND_ASSIGN(Indent);
+};
+
+}  // namespace libwebm
+
+#endif  // LIBWEBM_COMMON_INDENT_H_