/// <summary>
/// Parses the command-line arguments that are passed to this program by
/// the user and fills the properties of a newly-instantiated instance
/// of <see cref="T:my_uuidgen.CommandLineInfo" /> accordingly.
/// </summary>
/// <param name="args">
/// Enumerable collection of strings, each of which is a command-line argument.
/// </param>
/// <returns>
/// Reference to an instance of
/// <see
/// cref="T:my_uuidgen.CommandLineInfo" />
/// , whose properties are
/// initialized according to the switches passed to this application on
/// the command line.
/// </returns>
public static CommandLineInfo ParseCommandLine(IEnumerable <string> args)
{
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
var result = new CommandLineInfo();
var argsList = new Stack <string>(args);
if (!argsList.Any())
{
return(result);
}
var formatTypeProvided = false; // this can only happen once
while (argsList.Any())
{
var arg = argsList.Pop();
if (string.IsNullOrWhiteSpace(arg))
{
continue;
}
if ("/verysilent".Equals(arg.ToLowerInvariant()))
{
continue;
}
if (Resources.UppercaseSwitch.Equals(arg.ToLowerInvariant()))
{
result.IsUppercase = true;
continue;
}
if (Resources.NoCopySwitch.Equals(arg.ToLowerInvariant()))
{
result.ShouldNotCopy = true;
continue;
}
if (!arg.IsFormatTypeArgument() || formatTypeProvided)
{
continue;
}
result.FormatType = GetFormatType.FromSwitch(arg);
formatTypeProvided = !formatTypeProvided;
}
return(result);
}
public static void Main(string[] args)
{
var cmdInfo = CommandLineInfo.ParseCommandLine(args);
if (args.Any())
{
if (Resources.VersionSwitch.Equals(args[0]))
{
Console.WriteLine(
Assembly.GetExecutingAssembly()
.GetName()
.Version
);
Environment.Exit(0); /* exit code of zero means success */
}
}
/* This software has one job in life -- to get a new Globally-Unique Identifier (GUID) and then
* write it to the standard output and then exit. This program is meant to replicate the uuidgen.exe
* utility provided with the Windows SDK, but I wanted to use it in my own batch files, and who the heck
* wants to download and install the SDK all the time? */
var newGuidString = Guid.NewGuid()
.ToString(
GetGuidFormatSpecifier.ForFormatType(
cmdInfo.FormatType
)
);
var guidString = cmdInfo.IsUppercase
? newGuidString.ToUpperInvariant()
: newGuidString.ToLowerInvariant();
Console.WriteLine(guidString);
if (!cmdInfo.ShouldNotCopy)
{
// place the GUID string that we otherwise pump to standard
// output, also to be on the Clipboard. This way, this app can
// also be launched, e.g., from the Tools menu on Visual Studio
// and then the user can just do a paste into whatever file they
// are working on right off the bat.
Clipboard.SetText(guidString);
}
Environment.Exit(0); /* exit code of zero means success */
}
