Index: chrome/installer/util/experiment_labels.h |
diff --git a/chrome/installer/util/experiment_labels.h b/chrome/installer/util/experiment_labels.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b0b171c9f07b47d43c7c7cd94816d663c9018442 |
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+++ b/chrome/installer/util/experiment_labels.h |
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+// Copyright 2017 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. |
+ |
+#ifndef CHROME_INSTALLER_UTIL_EXPERIMENT_LABELS_H_ |
+#define CHROME_INSTALLER_UTIL_EXPERIMENT_LABELS_H_ |
+ |
+#include <utility> |
+ |
+#include "base/macros.h" |
+#include "base/strings/string16.h" |
+#include "base/strings/string_piece.h" |
+#include "base/time/time.h" |
+ |
+namespace installer { |
+ |
+// A wrapper around an Omaha "experiment_labels" value. No validation is |
+// performed on any values. For reference, see |
+// https://github.com/google/omaha/blob/master/omaha/common/experiment_labels.cc#L16. |
+class ExperimentLabels { |
+ public: |
+ explicit ExperimentLabels(const base::string16& value); |
+ |
+ // Returns the experiment_labels string containing the individual labels. |
+ const base::string16& value() const { return value_; } |
+ |
+ // Returns a StringPiece pointing to the value for a given label, or an empty |
+ // StringPiece if it is not present in the instance's value. Note: the |
+ // ExperimentLabels instance must outlive the piece returned, and the piece is |
+ // invalidated by any call to SetValueForLabel. |
+ base::StringPiece16 GetValueForLabel(base::StringPiece16 label_name) const; |
+ |
+ // Sets the value of a given label, overwriting a previous value if found. |
+ // The label's expiration date is set to the current time plus |lifetime|. |
+ void SetValueForLabel(base::StringPiece16 label_name, |
+ base::StringPiece16 label_value, |
+ base::TimeDelta lifetime); |
+ |
+ // Sets the value of a given label, overwriting a previous value if found. |
+ void SetValueForLabel(base::StringPiece16 label_name, |
+ base::StringPiece16 label_value, |
+ base::Time expiration); |
+ |
+ private: |
+ // A label's full contents ("name=value|expiration") and value within |
+ // |value_|. |
+ using LabelAndValue = std::pair<base::StringPiece16, base::StringPiece16>; |
+ |
+ // Returns the label and value named |label_name|, or empty string pieces if |
+ // not found. |
+ LabelAndValue FindLabel(base::StringPiece16 label_name) const; |
+ |
+ // The raw experiment_labels string. |
+ base::string16 value_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(ExperimentLabels); |
+}; |
+ |
+} // namespace installer |
+ |
+#endif // CHROME_INSTALLER_UTIL_EXPERIMENT_LABELS_H_ |