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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*============================================================
**
**
**
** Purpose:
**
**
===========================================================*/
namespace System {
using System.Runtime.Serialization;
using System.Globalization;
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Diagnostics.Contracts;
[ComVisible(true)]
[Serializable]
public sealed class OperatingSystem : ICloneable , ISerializable
{
private Version _version;
private PlatformID _platform;
private string _servicePack;
private string _versionString;
private OperatingSystem()
{
}
public OperatingSystem(PlatformID platform, Version version) : this(platform, version, null) {
}
internal OperatingSystem(PlatformID platform, Version version, string servicePack) {
if( platform < PlatformID.Win32S || platform > PlatformID.MacOSX) {
throw new ArgumentException(
Environment.GetResourceString("Arg_EnumIllegalVal", (int)platform),
nameof(platform));
}
if ((Object) version == null)
throw new ArgumentNullException(nameof(version));
Contract.EndContractBlock();
_platform = platform;
_version = (Version) version.Clone();
_servicePack = servicePack;
}
private OperatingSystem(SerializationInfo info, StreamingContext context) {
SerializationInfoEnumerator enumerator = info.GetEnumerator();
while( enumerator.MoveNext()) {
switch( enumerator.Name) {
case "_version":
_version = (Version) info.GetValue("_version", typeof(Version));
break;
case "_platform":
_platform = (PlatformID) info.GetValue("_platform", typeof(PlatformID));
break;
case "_servicePack":
_servicePack = info.GetString("_servicePack");
break;
}
}
if (_version == null ) {
throw new SerializationException(Environment.GetResourceString("Serialization_MissField", "_version"));
}
}
public void GetObjectData(SerializationInfo info, StreamingContext context) {
if( info == null ) {
throw new ArgumentNullException(nameof(info));
}
Contract.EndContractBlock();
info.AddValue("_version", _version);
info.AddValue("_platform", _platform);
info.AddValue("_servicePack", _servicePack);
}
public PlatformID Platform {
get { return _platform; }
}
public string ServicePack {
get {
if( _servicePack == null) {
return string.Empty;
}
return _servicePack;
}
}
public Version Version {
get { return _version; }
}
public Object Clone() {
return new OperatingSystem(_platform,
_version, _servicePack );
}
public override String ToString() {
return VersionString;
}
public String VersionString {
get {
if(_versionString != null) {
return _versionString;
}
String os;
switch(_platform)
{
case PlatformID.Win32NT:
os = "Microsoft Windows NT ";
break;
case PlatformID.Win32Windows:
if ((_version.Major > 4) ||
((_version.Major == 4) && (_version.Minor > 0)))
os = "Microsoft Windows 98 ";
else
os = "Microsoft Windows 95 ";
break;
case PlatformID.Win32S:
os = "Microsoft Win32S ";
break;
case PlatformID.WinCE:
os = "Microsoft Windows CE ";
break;
case PlatformID.MacOSX:
os = "Mac OS X ";
break;
default:
os = "<unknown> ";
break;
}
if( String.IsNullOrEmpty(_servicePack)) {
_versionString = os + _version.ToString();
}
else {
_versionString = os + _version.ToString(3) + " " + _servicePack;
}
return _versionString;
}
}
}
}
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