Add a Version class and matching unit tests, roughly based on chrome/installer/util/version.*. This version has more flexible parsing rules and is more robust to detecting bogus versions, supporting arbitrary numbers of version components rather than just dotted quads. It's possible that we should switch chrome installer to use this version.

Review URL: http://codereview.chromium.org/19667

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8901 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 44 insertions, 0 deletions

diff --git a/base/version.h b/base/version.h
new file mode 100644
index 0000000..6e12bb7
--- /dev/null
+++ b/base/version.h
@@ -0,0 +1,44 @@
+// Copyright (c) 2009 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 BASE_VERSION_H_
+#define BASE_VERSION_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+
+class Version {
+public:
+
+  // The version string must be made up of 1 or more uint16's separated
+  // by '.'. Returns NULL if string is not in this format.
+  // Caller is responsible for freeing the Version object once done.
+  static Version* GetVersionFromString(const std::wstring& version_str);
+  static Version* GetVersionFromString(const std::string& version_str);
+
+  ~Version() {}
+
+  bool Equals(const Version& other) const;
+
+  // Returns -1, 0, 1 for <, ==, >.
+  int CompareTo(const Version& other) const;
+
+  // Return the string representation of this version.
+  const std::string GetString() const;
+
+  const std::vector<uint16>& components() const { return components_; }
+
+private:
+  Version() {}
+  bool InitFromString(const std::string& version_str);
+
+  std::vector<uint16> components_;
+
+  DISALLOW_COPY_AND_ASSIGN(Version);
+};
+
+#endif  // BASE_VERSION_H_
+