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Merge pull request #9622 from workgroupengineering/features/Core/InMe…
…moryRandomAccessStream feat: InMemoryRandomAccessStream
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src/Uno.UI.RuntimeTests/Tests/Windows_Storage/Streams/Given_InMemoryRandomAccessStream.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| using System.IO; | ||
| using System.Threading.Tasks; | ||
| using Windows.Storage.Streams; | ||
| namespace Uno.UI.RuntimeTests.Tests.Windows_Storage.Streams; | ||
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| [TestClass] | ||
| public class Given_InMemoryRandomAccessStream | ||
| { | ||
| [TestMethod] | ||
| public async Task When_Open_ReadWrite() | ||
| { | ||
| var stream = new InMemoryRandomAccessStream(); | ||
| var direct = stream.AsStream(); | ||
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| await StreamTestHelper.Test(writeTo: direct, readOn: stream); | ||
| await StreamTestHelper.Test(writeTo: stream, readOn: direct); | ||
| } | ||
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| [TestMethod] | ||
| public async Task When_GetInputStream() | ||
| { | ||
| var stream = new InMemoryRandomAccessStream(); | ||
| var inputstream = stream.GetInputStreamAt(0); | ||
| var direct = stream.AsStream(); | ||
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| await StreamTestHelper.Test(writeTo: direct, readOn: inputstream); | ||
| } | ||
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| [TestMethod] | ||
| public async Task When_GetOutputStream() | ||
| { | ||
| var stream = new InMemoryRandomAccessStream(); | ||
| var outputstream = stream.GetOutputStreamAt(0); | ||
| var direct = stream.AsStream(); | ||
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| await StreamTestHelper.Test(writeTo: outputstream, readOn: direct); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| #nullable enable | ||
| using System; | ||
| using System.IO; | ||
| using Windows.Foundation; | ||
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| namespace Windows.Storage.Streams; | ||
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| public partial class InMemoryRandomAccessStream: IStreamWrapper | ||
| { | ||
| private readonly MemoryStream _stream; | ||
| public InMemoryRandomAccessStream() => | ||
| _stream = new(); | ||
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| private InMemoryRandomAccessStream(MemoryStream stream) => | ||
| _stream = stream; | ||
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| public ulong Size | ||
| { | ||
| get => (ulong)_stream.Length; | ||
| set => _stream.SetLength((long)value); | ||
| } | ||
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| public bool CanRead => _stream.CanRead; | ||
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| public bool CanWrite => _stream.CanWrite; | ||
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| public ulong Position => (ulong)_stream.Position; | ||
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| public void Seek(ulong position) => _stream.Position = (long)position; | ||
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| public IRandomAccessStream CloneStream() | ||
| { | ||
| var destination = new MemoryStream(); | ||
| _stream.Position = 0; | ||
| _stream.CopyTo(destination); | ||
| return new InMemoryRandomAccessStream(destination); | ||
| } | ||
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| public void Dispose() => _stream.Dispose(); | ||
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| Stream IStreamWrapper.FindStream() => _stream; | ||
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| public IAsyncOperationWithProgress<IBuffer, uint> ReadAsync(IBuffer buffer, uint count, InputStreamOptions options) => | ||
| _stream.ReadAsyncOperation(buffer, count, options); | ||
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| public IAsyncOperationWithProgress<uint, uint> WriteAsync(IBuffer buffer) => | ||
| _stream.WriteAsyncOperation(buffer); | ||
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| public IAsyncOperation<bool> FlushAsync() => | ||
| _stream.FlushAsyncOperation(); | ||
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| public IInputStream GetInputStreamAt(ulong position) | ||
| { | ||
| if (!CanRead) | ||
| { | ||
| throw new NotSupportedException("It has not been opened for read."); | ||
| } | ||
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| _stream.Seek((long)position, SeekOrigin.Begin); | ||
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| return new InputStreamOverStream(_stream); | ||
| } | ||
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| public IOutputStream GetOutputStreamAt(ulong position) | ||
| { | ||
| if (!CanWrite) | ||
| { | ||
| throw new NotSupportedException("It has not been opened for write."); | ||
| } | ||
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| _stream.Seek((long)position, SeekOrigin.Begin); | ||
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| return new OutputStreamOverStream(_stream); | ||
| } | ||
| } |