Index: components/metrics/chromeos/sparsehistogram_sample.cc |
diff --git a/components/metrics/chromeos/sparsehistogram_sample.cc b/components/metrics/chromeos/sparsehistogram_sample.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..94da5fcd839ee8fddb7998a958fbcaeb25047f39 |
--- /dev/null |
+++ b/components/metrics/chromeos/sparsehistogram_sample.cc |
@@ -0,0 +1,45 @@ |
+// 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 "components/metrics/chromeos/sparsehistogram_sample.h" |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "base/memory/scoped_ptr.h" |
+#include "base/strings/string_number_conversions.h" |
+#include "base/strings/string_split.h" |
+#include "base/strings/stringprintf.h" |
+#include "components/metrics/chromeos/metric_sample.h" |
+ |
+namespace metrics { |
+ |
+SparseHistogramSample::SparseHistogramSample(const std::string& histogram_name, |
+ int sample) |
+ : MetricSample(MetricSample::SPARSE_HISTOGRAM, histogram_name), |
+ sample_(sample) {} |
+ |
+SparseHistogramSample::~SparseHistogramSample() {} |
+ |
+std::string SparseHistogramSample::ToString() const { |
+ return base::StringPrintf( |
+ "sparsehistogram%c%s %d%c", '\0', name().c_str(), sample_, '\0'); |
+} |
+ |
+// static |
+scoped_ptr<SparseHistogramSample> SparseHistogramSample::ReadSparseHistogram( |
+ const std::string& serialized_histogram) { |
+ std::vector<std::string> parts; |
+ base::SplitString(serialized_histogram, ' ', &parts); |
+ if (parts.size() != 2) |
+ return scoped_ptr<SparseHistogramSample>(); |
+ int sample; |
+ if (parts[0].length() == 0 || !base::StringToInt(parts[1], &sample)) |
+ return scoped_ptr<SparseHistogramSample>(); |
+ |
+ return scoped_ptr<SparseHistogramSample>( |
+ new SparseHistogramSample(parts[0], sample)); |
+} |
+ |
+} // namespace metrics |