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using System;
using System.Collections.Generic;
using System.IO;
using LibGit2Sharp.Core.Handles;
namespace LibGit2Sharp.Core
{
internal class RawContentStream : UnmanagedMemoryStream
{
private readonly GitObjectSafeHandle handle;
private readonly ICollection<IDisposable> linkedResources;
internal unsafe RawContentStream(
GitObjectSafeHandle handle,
Func<GitObjectSafeHandle, IntPtr> bytePtrProvider,
Func<GitObjectSafeHandle, long> sizeProvider,
ICollection<IDisposable> linkedResources = null)
: base((byte*)Wrap(handle, bytePtrProvider, linkedResources).ToPointer(),
Wrap(handle, sizeProvider, linkedResources))
{
this.handle = handle;
this.linkedResources = linkedResources;
}
private static T Wrap<T>(
GitObjectSafeHandle handle,
Func<GitObjectSafeHandle, T> provider,
IEnumerable<IDisposable> linkedResources)
{
T value;
try
{
value = provider(handle);
}
catch
{
Dispose(handle, linkedResources);
throw;
}
return value;
}
private static void Dispose(
GitObjectSafeHandle handle,
IEnumerable<IDisposable> linkedResources)
{
handle.SafeDispose();
if (linkedResources == null)
{
return;
}
foreach (IDisposable linkedResource in linkedResources)
{
linkedResource.Dispose();
}
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
Dispose(handle, linkedResources);
}
}
}
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