1 files changed, 63 insertions, 0 deletions
diff --git a/runtime/indenter.h b/runtime/indenter.h
new file mode 100644
index 0000000000..4ac0c01163
--- /dev/null
+++ b/runtime/indenter.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_INDENTER_H_
+#define ART_SRC_INDENTER_H_
+
+#include "base/macros.h"
+#include <streambuf>
+
+const char kIndentChar =' ';
+const size_t kIndentBy1Count = 2;
+
+class Indenter : public std::streambuf {
+ public:
+  Indenter(std::streambuf* out, char text, size_t count)
+      : indent_next_(true), out_sbuf_(out), text_(text), count_(count) {}
+
+ private:
+  int_type overflow(int_type c) {
+    if (c != std::char_traits<char>::eof()) {
+      if (indent_next_) {
+        for (size_t i = 0; i < count_; ++i) {
+          out_sbuf_->sputc(text_);
+        }
+      }
+      out_sbuf_->sputc(c);
+      indent_next_ = (c == '\n');
+    }
+    return std::char_traits<char>::not_eof(c);
+  }
+
+  int sync() {
+    return out_sbuf_->pubsync();
+  }
+
+  bool indent_next_;
+
+  // Buffer to write output to.
+  std::streambuf* const out_sbuf_;
+
+  // Text output as indent.
+  const char text_;
+
+  // Number of times text is output.
+  const size_t count_;
+
+  DISALLOW_COPY_AND_ASSIGN(Indenter);
+};
+
+#endif // ART_SRC_INDENTER_H_