78 lines
1.9 KiB
C#
78 lines
1.9 KiB
C#
namespace PerfectNumbers.Core;
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/// <summary>
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/// Provides thread-safe file writing for both text and binary data.
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/// </summary>
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public sealed class TextFileWriter : IDisposable
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{
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private readonly FileStream _stream;
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private StreamWriter? _textWriter;
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private BinaryWriter? _binaryWriter;
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private readonly object _lock = new();
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public TextFileWriter(string path, FileMode mode)
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{
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var options = new FileStreamOptions
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{
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Access = FileAccess.Write,
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Mode = mode,
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Share = FileShare.Read
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};
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_stream = new FileStream(path, options);
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}
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public long Position
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{
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get { lock (_lock) { return _stream.Position; } }
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}
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private StreamWriter TextWriter => _textWriter ??= new StreamWriter(_stream, leaveOpen: true);
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private BinaryWriter BinaryWriter => _binaryWriter ??= new BinaryWriter(_stream, System.Text.Encoding.UTF8, leaveOpen: true);
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/// <summary>
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/// Clears the file by truncating it to zero length.
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/// </summary>
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public void Clear()
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{
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lock (_lock)
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{
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_stream.SetLength(0);
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_stream.Position = 0;
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_textWriter?.Flush();
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_binaryWriter?.Flush();
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}
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}
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/// <summary>
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/// Writes a line of text to the file.
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/// </summary>
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public void WriteLine(string line)
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{
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lock (_lock)
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{
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TextWriter.WriteLine(line);
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TextWriter.Flush();
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}
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}
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/// <summary>
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/// Executes a binary writing action within the internal lock.
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/// </summary>
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public void WriteBinary(Action<BinaryWriter> action)
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{
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lock (_lock)
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{
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action(BinaryWriter);
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BinaryWriter.Flush();
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}
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}
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public void Dispose()
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{
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_binaryWriter?.Dispose();
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_textWriter?.Dispose();
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_stream.Dispose();
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}
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}
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