Add mac_util, including MacOSXMinorVersion(), MacOSXVersion(), and MacModelAndBoard()

util/mac/mac_util.h

Index: util/mac/mac_util.h
diff --git a/util/mac/mac_util.h b/util/mac/mac_util.h
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+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// 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 CRASHPAD_UTIL_MAC_MAC_UTIL_H_
+#define CRASHPAD_UTIL_MAC_MAC_UTIL_H_
+
+#include <string>
+
+namespace crashpad {
+
+//! \brief Returns the version of the running operating system.
+//!
+//! \return The minor version of the operating system, such as `9` for Mac OS X
+//!     10.9.2.
+//!
+//! \note This is similar to the base::mac::IsOS*() family of functions, but

[Mark Mentovai, 2014/08/14 19:45:26]

bpoop is completely compatible with 10.5 except for one thing: it needs
bootstrap_register() on that OS only. Since the burden of supporting 10.5 is so
low here, I’ve gone ahead and done it. That’s why the IsOS*() family doesn’t
work here.

+//!     is provided for situations where the caller needs to obtain version
+//!     information beyond what is provided by Chromium’s base, or for when the
+//!     caller needs the actual minor version value.
+int MacOSXMinorVersion();
+
+//! \brief Returns the version of the running operating system.

[Robert Sesek, 2014/08/15 21:31:54]

Can I leave any of these NULL if I don't need the information?

[Mark Mentovai, 2014/08/16 05:30:48]

rsesek wrote:
In the only cases I’ve had to call it, I needed all of the information, so I
didn’t write the NULL checks. I’ll document this. If you feel strongly that this
should tolerate NULL arguments, I can change it.

+//!
+//! \param[out] major The major version of the operating system, such as `10`
+//!     for Mac OS X 10.9.2.
+//! \param[out] minor The major version of the operating system, such as `9` for
+//!     Mac OS X 10.9.2.
+//! \param[out] bugfix The bugfix version of the operating system, such as `2`
+//!     for Mac OS X 10.9.2.
+//! \param[out] build The operating system’s build string, such as "13C64" for
+//!     Mac OS X 10.9.2.
+//! \param[out] server `true` for a Mac OS X Server installation, `false`
+//!     otherwise (for a desktop/laptop, client, or workstation system).
+//! \param[out] version_string A string representing the full operating system
+//!     version, such as `"Mac OS X 10.9.2 (13C64)"`.
+//!
+//! \return `true` on success, `false` on failure, with an error message logged.
+//!     A failure is considered to have occurred if any element could not be
+//!     determined. When this happens, their values will be untouched, but other
+//!     values that could be determined will still be set properly.
+bool MacOSXVersion(int* major,
+                   int* minor,
+                   int* bugfix,
+                   std::string* build,
+                   bool* server,
+                   std::string* version_string);
+
+//! \brief Returns the model name and board ID of the running system.
+//!
+//! \param[out] model The system’s model name. A mid-2012 15" MacBook Pro would
+//!     report “MacBookPro10,1”.
+//! \param[out] board_id The system’s board ID. A mid-2012 15" MacBook Pro would
+//!     report “Mac-C3EC7CD22292981F”.
+//!
+//! If a value cannot be determined, its string is cleared.
+void MacModelAndBoard(std::string* model, std::string* board_id);
+
+}  // namespace crashpad
+
+#endif  // CRASHPAD_UTIL_MAC_MAC_UTIL_H_