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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.HeatTasks
{
using System;
using System.Text.RegularExpressions;
using Microsoft.Build.Framework;
using Microsoft.Build.Utilities;
/// <summary>
/// A base MSBuild task to refresh generated files.
/// </summary>
public abstract class RefreshTask : Task
{
private static readonly Regex AddPrefix = new Regex(@"^[^a-zA-Z_]");
private static readonly Regex IllegalIdentifierCharacters = new Regex(@"[^A-Za-z0-9_\.]|\.{2,}"); // non 'words' and assorted valid characters
/// <summary>Metadata key name to turn off harvesting of project references.</summary>
protected const string DoNotHarvest = "DoNotHarvest";
/// <summary>
/// The list of files to generate.
/// </summary>
[Required]
public ITaskItem[] GeneratedFiles { get; set; }
/// <summary>
/// All the project references in the project.
/// </summary>
[Required]
public ITaskItem[] ProjectReferencePaths { get; set; }
/// <summary>
/// Return an identifier based on passed file/directory name
/// </summary>
/// <param name="name">File/directory name to generate identifer from</param>
/// <returns>A version of the name that is a legal identifier.</returns>
/// <remarks>This is duplicated from WiX's Common class.</remarks>
protected static string GetIdentifierFromName(string name)
{
var result = IllegalIdentifierCharacters.Replace(name, "_"); // replace illegal characters with "_".
// MSI identifiers must begin with an alphabetic character or an
// underscore. Prefix all other values with an underscore.
if (AddPrefix.IsMatch(name))
{
result = String.Concat("_", result);
}
return result;
}
protected static string GetMetadataOrDefault(ITaskItem item, string metadataName, string defaultValue)
{
var value = item.GetMetadata(metadataName);
return String.IsNullOrWhiteSpace(value) ? defaultValue : value;
}
}
}
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