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FileResource.cs
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FileResource.cs
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// Copyright 2004-2021 Castle Project - http://www.castleproject.org/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
namespace Castle.Core.Resource
{
using System;
using System.Globalization;
using System.IO;
/// <summary>
///
/// </summary>
public class FileResource : AbstractStreamResource
{
private string filePath;
private string basePath;
public FileResource(CustomUri resource)
{
CreateStream = delegate
{
return CreateStreamFromUri(resource, DefaultBasePath);
};
}
public FileResource(CustomUri resource, string basePath)
{
CreateStream = delegate
{
return CreateStreamFromUri(resource, basePath);
};
}
public FileResource(string resourceName)
{
CreateStream = delegate
{
return CreateStreamFromPath(resourceName, DefaultBasePath);
};
}
public FileResource(string resourceName, string basePath)
{
CreateStream = delegate
{
return CreateStreamFromPath(resourceName, basePath);
};
}
public override string ToString()
{
return string.Format(CultureInfo.CurrentCulture, "FileResource: [{0}] [{1}]", filePath, basePath);
}
public override string FileBasePath
{
get { return basePath; }
}
public override IResource CreateRelative(string relativePath)
{
return new FileResource(relativePath, basePath);
}
private Stream CreateStreamFromUri(CustomUri resource, string rootPath)
{
if (resource == null) throw new ArgumentNullException(nameof(resource));
if (rootPath == null) throw new ArgumentNullException(nameof(rootPath));
if (!resource.IsFile)
throw new ArgumentException("The specified resource is not a file", nameof(resource));
return CreateStreamFromPath(resource.Path, rootPath);
}
private Stream CreateStreamFromPath(string resourcePath, string rootPath)
{
if (resourcePath == null)
throw new ArgumentNullException(nameof(resourcePath));
if (rootPath == null)
throw new ArgumentNullException(nameof(rootPath));
if (!Path.IsPathRooted(resourcePath) || !File.Exists(resourcePath))
{
// For a relative path, we use the basePath to
// resolve the full path
resourcePath = Path.Combine(rootPath, resourcePath);
}
CheckFileExists(resourcePath);
this.filePath = Path.GetFileName(resourcePath);
this.basePath = Path.GetDirectoryName(resourcePath);
return File.OpenRead(resourcePath);
}
private static void CheckFileExists(string path)
{
if (!File.Exists(path))
{
string message = string.Format(CultureInfo.InvariantCulture, "File {0} could not be found", new FileInfo(path).FullName);
throw new ResourceException(message);
}
}
}
}