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MacroProcessor<T> Class

Summary

Manages the processing of macros.

Syntax

C++

public class MacroProcessor<T>

Public Class MacroProcessor(Of T)

generic<typename T> 
public ref class MacroProcessor

Type Parameters

T
Type of data passed to the macro substitution delegates.

Remarks

Macros are defined as ${macro_name} in strings. This class looks for those tokens and calls the appropriate registered delegate to return a string. The MacroProcessor class has the following default macros when created:

Value	Meaning
date	Current date.
random_string	Random string of specified link.
random_date	Random date in the specified min/max date range.
empty	Empty string.
random_time	Random time offset from the specified time.
replace(value)	Releases the tag with the specified value.

Example

This example adds two macros to the macro processor and process a string.

using Leadtools.Dicom.Common.Anonymization; 
 
public void MacroProcessorSample() 
{ 
   MacroProcessor<object> processor = new MacroProcessor<object>(); 
 
   // 
   // add two macros to the macro processor 
   // 
   processor.Macros.Add("current_date", new MacroSubstitutionDelegate<object>(CurrentDateMacro)); 
   processor.Macros.Add("current_time", new MacroSubstitutionDelegate<object>(CurrentTimeMacro)); 
 
   // 
   // Process a macro string 
   // 
   Console.WriteLine(processor.Process(processor, "${current_date} ==> ${current_time}")); 
} 
 
private string CurrentDateMacro(object userData, string name, params object[] parameters) 
{ 
   return DateTime.Now.ToShortDateString(); 
} 
 
private string CurrentTimeMacro(object userData, string name, params object[] parameters) 
{ 
   return DateTime.Now.ToShortTimeString(); 
}

Imports Leadtools.Dicom.Common.Anonymization 
 
Public Sub MacroProcessorSample() 
   Dim processor As New MacroProcessor(Of Object)() 
 
   ' 
   ' add two macros to the macro processor 
   ' 
   processor.Macros.Add("current_date", New MacroSubstitutionDelegate(Of Object)(AddressOf CurrentDateMacro)) 
   processor.Macros.Add("current_time", New MacroSubstitutionDelegate(Of Object)(AddressOf CurrentTimeMacro)) 
 
   ' 
   ' Process a macro string 
   ' 
   Console.WriteLine(processor.Process(processor, "${current_date} ==> ${current_time}")) 
End Sub 
 
Private Function CurrentDateMacro(ByVal userData As Object, ByVal name As String, ByVal ParamArray parameters As Object()) As String 
   Return DateTime.Now.ToShortDateString() 
End Function 
 
Private Function CurrentTimeMacro(ByVal userData As Object, ByVal name As String, ByVal ParamArray parameters As Object()) As String 
   Return DateTime.Now.ToShortTimeString() 
End Function