Import relocation packer from chromium repo
Bug: 18051137
Change-Id: Ia67fa11da8247e3f86f70a8ce99e6695f2c05423
diff --git a/tools/relocation_packer/src/debug.cc b/tools/relocation_packer/src/debug.cc
new file mode 100644
index 0000000..29d7ab0
--- /dev/null
+++ b/tools/relocation_packer/src/debug.cc
@@ -0,0 +1,55 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "debug.h"
+
+#include <stdlib.h>
+#include <iostream>
+#include <string>
+
+namespace relocation_packer {
+
+// Construct a new message logger. Prints if level is less than or equal to
+// the level set with SetVerbose() and predicate is true.
+Logger::Logger(Severity severity, int level, bool predicate) {
+ severity_ = severity;
+ level_ = level;
+ predicate_ = predicate;
+}
+
+// On destruction, flush and print the strings accumulated. Abort if FATAL.
+Logger::~Logger() {
+ if (predicate_) {
+ if (level_ <= max_level_) {
+ std::ostream* log = severity_ == INFO ? info_stream_ : error_stream_;
+ std::string tag;
+ switch (severity_) {
+ case INFO: tag = "INFO"; break;
+ case WARNING: tag = "WARNING"; break;
+ case ERROR: tag = "ERROR"; break;
+ case FATAL: tag = "FATAL"; break;
+ }
+ stream_.flush();
+ *log << tag << ": " << stream_.str() << std::endl;
+ }
+ if (severity_ == FATAL)
+ abort();
+ }
+}
+
+// Reset to initial state.
+void Logger::Reset() {
+ max_level_ = -1;
+ info_stream_ = &std::cout;
+ error_stream_ = &std::cerr;
+}
+
+// Verbosity. Not thread-safe.
+int Logger::max_level_ = -1;
+
+// Logging streams. Not thread-safe.
+std::ostream* Logger::info_stream_ = &std::cout;
+std::ostream* Logger::error_stream_ = &std::cerr;
+
+} // namespace relocation_packer