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93f7652594
ContentCacheStrategy now implements ICacheStrategy only and load data from files directly
35 lines
1.0 KiB
C#
35 lines
1.0 KiB
C#
// Copyright 2025 The Ip2Region Authors. All rights reserved.
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// Use of this source code is governed by a Apache2.0-style
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// license that can be found in the LICENSE file.
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// @Author Alan <lzh.shap@gmail.com>
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// @Date 2023/07/25
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// Updated by Wong <vcd.hai@outlook.com> at 2025/12/31
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namespace IP2Region.Net.Internal;
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class ContentCacheStrategy(string xdbPath) : ICacheStrategy
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{
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// TODO: these constants can be moved to the interface as defaults when using .NET 10
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private const int HeaderInfoLength = 256;
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private const int VectorIndexSize = 8;
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private readonly ReadOnlyMemory<byte> _cacheData = File.ReadAllBytes(xdbPath);
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public int IoCount => 0;
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public void ResetIoCount()
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{
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// Do nothing
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}
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public ReadOnlyMemory<byte> GetVectorIndex(int offset)
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=> _cacheData.Slice(HeaderInfoLength + offset, VectorIndexSize);
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public ReadOnlyMemory<byte> GetData(long offset, int length) => _cacheData.Slice((int)offset, length);
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public void Dispose()
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{
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// Do nothing
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}
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}
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