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// Copyright 2015 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.
#import "third_party/blink/renderer/platform/mac/version_util_mac.h"
#include <sstream>
#include <string>
#include <sys/utsname.h>
namespace {
// Returns the running system's Darwin major version. Don't call this, it's
// an implementation detail and its result is meant to be cached by
// MacOSXMinorVersion.
int DarwinMajorVersionInternal() {
// The implementation of this method was copied from Chromium, with minor
// modifications to avoid the use of methods in base/. For further details,
// see
// https://code.google.com/p/chromium/codesearch#chromium/src/base/mac/mac_util.mm
struct utsname unameInfo;
if (uname(&unameInfo) != 0)
return 0;
if (strcmp(unameInfo.sysname, "Darwin") != 0)
return 0;
std::string releaseString(unameInfo.release);
size_t pos = releaseString.find_first_of('.');
if (pos == std::string::npos)
return 0;
std::istringstream convert(releaseString.substr(0, pos));
int majorVersion;
if (!(convert >> majorVersion))
return 0;
return majorVersion;
}
// Returns the running system's Mac OS X minor version. This is the |y| value
// in 10.y or 10.y.z. Don't call this, it's an implementation detail and the
// result is meant to be cached by MacOSXMinorVersion.
int MacOSXMinorVersionInternal() {
int darwinMajorVersion = DarwinMajorVersionInternal();
return darwinMajorVersion - 4;
}
} // namespace
// Returns the running system's Mac OS X minor version. This is the |y| value
// in 10.y or 10.y.z.
int blink::internal::MacOSXMinorVersion() {
static int minor_version = MacOSXMinorVersionInternal();
return minor_version;
}
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