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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.BuildTasks
{
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Text;
using Microsoft.Build.Framework;
/// <summary>
/// Contains helper methods on searching for files
/// </summary>
public static class FileSearchHelperMethods
{
/// <summary>
/// Searches for the existence of a file in multiple directories.
/// Search is satisfied if default file path is valid and exists. If not,
/// file name is extracted from default path and combined with each of the directories
/// looking to see if it exists. If not found, input default path is returned.
/// </summary>
/// <param name="directories">Array of directories to look in, without filenames in them</param>
/// <param name="defaultFullPath">Default path - to use if not found</param>
/// <returns>File path if file found. Empty string if not found</returns>
public static string SearchFilePaths(string[] directories, string defaultFullPath)
{
if (String.IsNullOrEmpty(defaultFullPath))
{
return String.Empty;
}
if (File.Exists(defaultFullPath))
{
return defaultFullPath;
}
if (directories == null)
{
return string.Empty;
}
string fileName = Path.GetFileName(defaultFullPath);
foreach (string currentPath in directories)
{
if (String.IsNullOrEmpty(currentPath) || String.IsNullOrEmpty(currentPath.Trim()))
{
continue;
}
if (File.Exists(Path.Combine(currentPath, fileName)))
{
return Path.Combine(currentPath, fileName);
}
}
return String.Empty;
}
}
}
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