using Swan.Logging;
using System;
using System.IO;
using System.Reflection;
using System.Threading;
namespace Swan {
///
/// Provides utility methods to retrieve information about the current application.
///
public static class SwanRuntime {
private static readonly Lazy EntryAssemblyLazy = new Lazy(Assembly.GetEntryAssembly);
private static readonly Lazy CompanyNameLazy = new Lazy(() => {
AssemblyCompanyAttribute attribute = EntryAssembly.GetCustomAttribute(typeof(AssemblyCompanyAttribute)) as AssemblyCompanyAttribute;
return attribute?.Company ?? String.Empty;
});
private static readonly Lazy ProductNameLazy = new Lazy(() => {
AssemblyProductAttribute attribute = EntryAssembly.GetCustomAttribute(typeof(AssemblyProductAttribute)) as AssemblyProductAttribute;
return attribute?.Product ?? String.Empty;
});
private static readonly Lazy ProductTrademarkLazy = new Lazy(() => {
AssemblyTrademarkAttribute attribute = EntryAssembly.GetCustomAttribute(typeof(AssemblyTrademarkAttribute)) as AssemblyTrademarkAttribute;
return attribute?.Trademark ?? String.Empty;
});
private static readonly String ApplicationMutexName = "Global\\{{" + EntryAssembly.FullName + "}}";
private static readonly Object SyncLock = new Object();
private static OperatingSystem? _oS;
#region Properties
///
/// Gets the current Operating System.
///
///
/// The os.
///
public static OperatingSystem OS {
get {
if(_oS.HasValue == false) {
String windowsDirectory = Environment.GetEnvironmentVariable("windir");
_oS = String.IsNullOrEmpty(windowsDirectory) == false && windowsDirectory.Contains(@"\") && Directory.Exists(windowsDirectory)
? (OperatingSystem?)OperatingSystem.Windows
: (OperatingSystem?)(File.Exists(@"/proc/sys/kernel/ostype") ? OperatingSystem.Unix : OperatingSystem.Osx);
}
return _oS ?? OperatingSystem.Unknown;
}
}
///
/// Checks if this application (including version number) is the only instance currently running.
///
///
/// true if this instance is the only instance; otherwise, false.
///
[System.Diagnostics.CodeAnalysis.SuppressMessage("Codequalität", "IDE0067:Objekte verwerfen, bevor Bereich verloren geht", Justification = "")]
public static Boolean IsTheOnlyInstance {
get {
lock(SyncLock) {
try {
// Try to open existing mutex.
_ = Mutex.OpenExisting(ApplicationMutexName);
} catch {
try {
// If exception occurred, there is no such mutex.
Mutex appMutex = new Mutex(true, ApplicationMutexName);
$"Application Mutex created {appMutex} named '{ApplicationMutexName}'".Debug(typeof(SwanRuntime));
// Only one instance.
return true;
} catch {
// Sometimes the user can't create the Global Mutex
}
}
// More than one instance.
return false;
}
}
}
///
/// Gets a value indicating whether this application instance is using the MONO runtime.
///
///
/// true if this instance is using MONO runtime; otherwise, false.
///
public static Boolean IsUsingMonoRuntime => Type.GetType("Mono.Runtime") != null;
///
/// Gets the assembly that started the application.
///
///
/// The entry assembly.
///
public static Assembly EntryAssembly => EntryAssemblyLazy.Value;
///
/// Gets the name of the entry assembly.
///
///
/// The name of the entry assembly.
///
public static AssemblyName EntryAssemblyName => EntryAssemblyLazy.Value.GetName();
///
/// Gets the entry assembly version.
///
public static Version EntryAssemblyVersion => EntryAssemblyName.Version;
///
/// Gets the full path to the folder containing the assembly that started the application.
///
///
/// The entry assembly directory.
///
public static String EntryAssemblyDirectory {
get {
UriBuilder uri = new UriBuilder(EntryAssembly.CodeBase);
String path = Uri.UnescapeDataString(uri.Path);
return Path.GetDirectoryName(path);
}
}
///
/// Gets the name of the company.
///
///
/// The name of the company.
///
public static String CompanyName => CompanyNameLazy.Value;
///
/// Gets the name of the product.
///
///
/// The name of the product.
///
public static String ProductName => ProductNameLazy.Value;
///
/// Gets the trademark.
///
///
/// The product trademark.
///
public static String ProductTrademark => ProductTrademarkLazy.Value;
///
/// Gets a local storage path with a version.
///
///
/// The local storage path.
///
public static String LocalStoragePath {
get {
String localAppDataPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), EntryAssemblyName.Name);
String returnPath = Path.Combine(localAppDataPath, EntryAssemblyVersion.ToString());
if(!Directory.Exists(returnPath)) {
_ = Directory.CreateDirectory(returnPath);
}
return returnPath;
}
}
#endregion
#region Methods
///
/// Build a full path pointing to the current user's desktop with the given filename.
///
/// The filename.
///
/// The fully qualified location of path, such as "C:\MyFile.txt".
///
/// filename.
public static String GetDesktopFilePath(String filename) {
if(String.IsNullOrWhiteSpace(filename)) {
throw new ArgumentNullException(nameof(filename));
}
String pathWithFilename = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), filename);
return Path.GetFullPath(pathWithFilename);
}
#endregion
}
}