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/************************************************************************* | ||
* ModernUO * | ||
* Copyright 2019-2024 - ModernUO Development Team * | ||
* Email: hi@modernuo.com * | ||
* File: BinaryFileReader.cs * | ||
* * | ||
* This program is free software: you can redistribute it and/or modify * | ||
* it under the terms of the GNU General Public License as published by * | ||
* the Free Software Foundation, either version 3 of the License, or * | ||
* (at your option) any later version. * | ||
* * | ||
* You should have received a copy of the GNU General Public License * | ||
* along with this program. If not, see <http://www.gnu.org/licenses/>. * | ||
*************************************************************************/ | ||
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using System; | ||
using System.IO; | ||
using System.IO.MemoryMappedFiles; | ||
using System.Runtime.CompilerServices; | ||
using System.Text; | ||
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namespace Server; | ||
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public sealed unsafe class BinaryFileReader : IDisposable, IGenericReader | ||
{ | ||
private readonly bool _usePrefixes; | ||
private readonly MemoryMappedFile _mmf; | ||
private readonly MemoryMappedViewStream _accessor; | ||
private readonly UnmanagedDataReader _reader; | ||
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public BinaryFileReader(string path, bool usePrefixes = true, Encoding encoding = null) | ||
{ | ||
_usePrefixes = usePrefixes; | ||
var fi = new FileInfo(path); | ||
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if (fi.Length > 0) | ||
{ | ||
_mmf = MemoryMappedFile.CreateFromFile(path, FileMode.Open); | ||
_accessor = _mmf.CreateViewStream(); | ||
byte* ptr = null; | ||
_accessor.SafeMemoryMappedViewHandle.AcquirePointer(ref ptr); | ||
_reader = new UnmanagedDataReader(ptr, _accessor.Length, encoding: encoding); | ||
} | ||
else | ||
{ | ||
_reader = new UnmanagedDataReader(null, 0, encoding: encoding); | ||
} | ||
} | ||
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public long Position => _reader.Position; | ||
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public void Dispose() | ||
{ | ||
_accessor?.SafeMemoryMappedViewHandle.ReleasePointer(); | ||
_accessor?.Dispose(); | ||
_mmf?.Dispose(); | ||
} | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public string ReadString(bool intern = false) => _usePrefixes ? _reader.ReadString(intern) : _reader.ReadStringRaw(intern); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public string ReadStringRaw(bool intern = false) => _reader.ReadStringRaw(intern); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public long ReadLong() => _reader.ReadLong(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public ulong ReadULong() => _reader.ReadULong(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public int ReadInt() => _reader.ReadInt(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public uint ReadUInt() => _reader.ReadUInt(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public short ReadShort() => _reader.ReadShort(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public ushort ReadUShort() => _reader.ReadUShort(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public double ReadDouble() => _reader.ReadDouble(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public float ReadFloat() => _reader.ReadFloat(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public byte ReadByte() => _reader.ReadByte(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public sbyte ReadSByte() => _reader.ReadSByte(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public bool ReadBool() => _reader.ReadBool(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public Serial ReadSerial() => _reader.ReadSerial(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public Type ReadType() => _reader.ReadType(); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public int Read(Span<byte> buffer) => _reader.Read(buffer); | ||
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[MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
public long Seek(long offset, SeekOrigin origin) => _reader.Seek(offset, origin); | ||
} |
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