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https://github.com/digital-jellyfish/Virtu.git
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6aa86024d3
Jellyfish.Virtu.exe <FileName> Includes new support for 'program' (.prg) files.
71 lines
2.1 KiB
C#
71 lines
2.1 KiB
C#
using System;
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using System.Diagnostics.CodeAnalysis;
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using System.IO;
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namespace Jellyfish.Library
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{
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public static class StreamExtensions
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{
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[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed")]
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public static int ReadBlock(this Stream stream, byte[] buffer, int offset = 0, int minCount = int.MaxValue)
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{
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return ReadBlock(stream, buffer, offset, int.MaxValue, minCount);
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}
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public static int ReadBlock(this Stream stream, byte[] buffer, int offset, int count, int minCount)
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{
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if (stream == null)
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{
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throw new ArgumentNullException("stream");
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}
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if (buffer == null)
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{
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throw new ArgumentNullException("buffer");
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}
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count = Math.Min(count, buffer.Length - offset);
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minCount = Math.Min(minCount, buffer.Length - offset);
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int total = 0;
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int read;
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do
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{
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total += read = stream.Read(buffer, offset + total, count - total);
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}
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while ((read > 0) && (total < count));
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if (total < minCount)
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{
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throw new EndOfStreamException();
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}
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return total;
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}
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public static void SkipBlock(this Stream stream, int count)
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{
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if (stream == null)
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{
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throw new ArgumentNullException("stream");
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}
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if (stream.CanSeek)
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{
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stream.Seek(count, SeekOrigin.Current);
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}
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else
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{
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const int BufferSize = 1024;
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var buffer = new byte[BufferSize];
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int total = 0;
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int read;
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do
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{
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total += read = stream.Read(buffer, 0, Math.Min(count - total, BufferSize));
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}
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while ((read > 0) && (total < count));
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}
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}
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}
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}
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