ToolTask.GenerateFullPathToTool Method

Definition

Gets the fully qualified tool name. Should return ToolExe if ToolTask should search for the tool in the system path. If ToolPath is set, this is ignored.

protected abstract string GenerateFullPathToTool ();

Returns

Path string.

Examples

The following example creates a ToolTask that runs Ilasm.exe (IL Assembler). The CommandLineBuilder, ToolLocationHelper, and TaskLoggingHelper classes are used to generate the information needed to run the task.

using System;
using System.Collections;
using System.Text;
using Microsoft.Build.Utilities;
using Microsoft.Build.Framework;

namespace MSBuildTasks
{
    /// <summary>
    /// A very simple and incomplete ToolTask to wrap the ILASM.EXE tool.
    /// </summary>
    public class ILAsm : ToolTask
    {
        #region Member Data
        /// <summary>
        /// Gets the collection of parameters used by the task class.
        /// </summary>
        /// <value>Parameter bag.</value>
        protected internal Hashtable Bag
        {
            get
            {
                return bag;
            }
        }

        private Hashtable bag = new Hashtable();
        #endregion

        #region ILAsm Task Properties
        /// <summary>
        /// The Source file that is to be compled (.il)
        /// </summary>
        public ITaskItem Source
        {
            get { return Bag["Source"] as ITaskItem; }
            set { Bag["Source"] = value; }
        }
        /// <summary>
        /// Either EXE or DLL indicating the assembly type to be generated
        /// </summary>
        public string TargetType
        {
            get { return Bag["TargetType"] as string; }
            set { Bag["TargetType"] = value; }
        }
        #endregion

        #region ToolTask Members
        protected override string ToolName
        {
            get { return "ILAsm.exe"; }
        }

        /// <summary>
        /// Use ToolLocationHelper to find ILASM.EXE in the Framework directory
        /// </summary>
        /// <returns></returns>
        protected override string GenerateFullPathToTool()
        {
            // Ask ToolLocationHelper to find ILASM.EXE - it will look in the latest framework directory available
            return ToolLocationHelper.GetPathToDotNetFrameworkFile(ToolName, TargetDotNetFrameworkVersion.VersionLatest);
        }
        #endregion

        #region ILAsm Task Members
        /// <summary>
        /// Construct the command line from the task properties by using the CommandLineBuilder
        /// </summary>
        /// <returns></returns>
        protected override string GenerateCommandLineCommands()
        {
            CommandLineBuilder builder = new CommandLineBuilder();

            // We don't need the tool's logo information shown
            builder.AppendSwitch("/nologo");

            string targetType = Bag["TargetType"] as string;
            // Be explicit with our switches
            if (targetType != null)
            {
                if (String.Compare(targetType, "DLL", true) == 0)
                {
                    builder.AppendSwitch("/DLL");
                }
                else if (String.Compare(targetType, "EXE", true) == 0)
                {
                    builder.AppendSwitch("/EXE");
                }
                else
                {
                    Log.LogWarning("Invalid TargetType (valid values are DLL and EXE) specified: {0}", targetType);
                }
            }

            // Add the filename that we want the tool to process
            builder.AppendFileNameIfNotNull(Bag["Source"] as ITaskItem);

            // Log a High importance message stating the file that we are assembling
            Log.LogMessage(MessageImportance.High, "Assembling {0}", Bag["Source"]);

            // We have all of our switches added, return the commandline as a string
            return builder.ToString();
        }
        #endregion
    }
}

Remarks

This method returns the value of the ToolName property if the tool is located in the system path.

Applies to