Quiero compartir mi plantilla de aplicación de consola por defecto para parsear argumentos,
para importar la plantilla a VisualStudio símplemente deben copiar el archivo ZIP al directorio "...Mis Documentos\Visual Studio\Templates\ProjectTemplates\" (o donde lo hayan establecido en la configuración de VisualStudio).
Esto es lo que le añadí:
· Sección de ayuda. (Logo, sintaxis, título)
· Método para escribir texto coloreado.
· Método para ocultar la consola.
· Método para lanzar un error conocido.
· Método para establecer los argumentos de la aplicación. (Ojo, esto es con fines de debug, no usarlo en el Release, ya que el regex no es perfecto.)
· Método para procesar argumentos.
· Método para comprobar si los argumentos están vacios.
· Método para unir los argumentos en un String.
Todo documentado y en no muchas lineas de código.
Descarga: http://elektrostudios.tk/ElektroStudios%20Console%20Application.zip
Una imagen:
(http://img9.imageshack.us/img9/1001/qfae.png)
Este es el código principal, junto a 2 Classes adicionales que se encuentran dentro de la plantilla.
Module Main
#Region " Variables "
''' <summary>
''' Here will be stored the commandline arguments for this application.
''' If DebugArguments is nothing then the normal arguments are used,
''' Otherwise, the custom debug arguments are used.
''' </summary>
Private Arguments As IEnumerable(Of String) =
Set_CommandLine_Arguments(<a><![CDATA[/Switch1=Value1 /Switch2="Value2"]]></a>.Value)
''' <summary>
''' Something.
''' </summary>
Private Something As String = Nothing
''' <summary>
''' To manage known errors.
''' </summary>
Private ReadOnly KnownErrors As New Dictionary(Of Integer, String) From
{
{1, "Wrong parameter"},
{2, "Parameter not specified"},
{9999, "Unknown Error"}
}
#End Region
#Region " DEBUG CommandLine Arguments "
''' <summary>
''' Set the commandline arguments of this application for testing purposes.
''' </summary>
Public Function Set_CommandLine_Arguments(Optional ByVal DebugArguments As String = Nothing) As IEnumerable(Of String)
#If DEBUG Then
' Código eliminado porque el foro tiene un bug al parsear los caracteres...
End Function
#End Region
#Region " Main Procedure "
''' <summary>
''' The main procedure of this application.
''' </summary>
Public Sub Main()
Console.Title = HelpSection.Title ' Set the Console Title.
Write_Colored_Text(HelpSection.Logo, True, ConsoleColor.Green) ' Print the Logo.
Write_Colored_Text("Arguments: " & Join_Arguments(Arguments), True, ConsoleColor.DarkGray) ' Print the Arguments.
Parse_Arguments() ' Processes the arguments passed to the application.
DoSomething() ' Do Something and wait.
Environment.Exit(0) ' Exit succesfully.
End Sub
#End Region
#Region " Methods "
''' <summary>
''' Parses the Arguments passed to this application.
''' </summary>
Private Sub Parse_Arguments()
' Arguments Are Empty?.
If Arguments_Are_Empty(Arguments) Then
PrintHelp()
End If
' Parse arguments.
For Each Argument As String In Arguments
Select Case True
Case Argument.StartsWith("/Switch1=", StringComparison.InvariantCultureIgnoreCase)
' Something = Argument.Substring(Argument.IndexOf("=") + 1)
End Select
Next Argument
If Something Is Nothing Then
LaunchError(1, "/Switch1")
End If
End Sub
''' <summary>
''' Do something and wait.
''' </summary>
Private Sub DoSomething()
Do Until Something = "Something Else"
Application.DoEvents()
Loop
End Sub
#End Region
#Region " Miscellaneous Methods "
''' <summary>
''' Check if the arguments are empty.
''' </summary>
''' <param name="DebugArguments">Indicates a custom arguments to check.</param>
Private Function Arguments_Are_Empty(Optional ByVal DebugArguments As IEnumerable(Of String) = Nothing) As Boolean
Return Not Convert.ToBoolean(If(DebugArguments IsNot Nothing,
DebugArguments.Count,
Environment.GetCommandLineArgs.Skip(1).Count))
End Function
''' <summary>
''' Joins the Arguments to return a single String.
''' </summary>
''' <param name="DebugArguments">Indicates a custom arguments to join.</param>
Private Function Join_Arguments(Optional ByVal DebugArguments As IEnumerable(Of String) = Nothing) As String
Return String.Join(Convert.ToChar(Keys.Space),
If(DebugArguments IsNot Nothing,
DebugArguments,
Environment.GetCommandLineArgs.Skip(1)))
End Function
''' <summary>
''' Writes colored text on the Console.
''' </summary>
''' <param name="Text">Indicates the text to write.</param>
''' <param name="AddNewLine">Adds an empty line at the end of the text.</param>
''' <param name="ForeColor">Indicates the text color.</param>
''' <param name="BackColor">Indicates the background color.</param>
Private Sub Write_Colored_Text(ByVal Text As String,
Optional ByVal AddNewLine As Boolean = False,
Optional ByVal ForeColor As ConsoleColor = Nothing,
Optional ByVal BackColor As ConsoleColor = Nothing)
Console.ForegroundColor = If(ForeColor = Nothing, Console.ForegroundColor, ForeColor)
Console.BackgroundColor = If(ForeColor = Nothing, Console.BackgroundColor, BackColor)
If AddNewLine Then
Console.WriteLine(Text)
Else
Console.Write(Text)
End If
Console.ForegroundColor = If(ForeColor = Nothing, Console.ForegroundColor, ForeColor)
Console.BackgroundColor = If(ForeColor = Nothing, Console.BackgroundColor, BackColor)
End Sub
''' <summary>
''' Set the window state of the console.
''' </summary>
''' <param name="WindowState">Indicates the new state of the console window.</param>
Public Function SetWindow(ByVal WindowState As ConsoleWindowState.WindowState) As Boolean
Return ConsoleWindowState.SetWindowState(WindowState)
End Function
''' <summary>
''' Print the Help section and exits from the application.
''' </summary>
Private Sub PrintHelp()
Console.WriteLine(HelpSection.Help)
Environment.Exit(0) ' Exit succesfully.
End Sub
''' <summary>
''' Launch a known error and exits from the application.
''' </summary>
''' <param name="ErrorID">
''' Indicates the known Error Identifier.
''' This value is also used to specify the ExitCode.
''' </param>
''' <param name="MoreInfo">Indicates additional information.</param>
Private Sub LaunchError(ByVal ErrorID As Integer, Optional ByVal MoreInfo As String = Nothing)
Console.WriteLine()
Write_Colored_Text(KnownErrors(ErrorID) &
If(MoreInfo IsNot Nothing, ": " & MoreInfo, Nothing),
True, ConsoleColor.White, ConsoleColor.DarkRed)
Environment.Exit(ErrorID) ' Exit with error exitcode.
End Sub
#End Region
#Region " Event Handlers "
' Add here your EventHandlers.
#End Region
End Module
Saludos.