aaru-dps/Aaru.Checksums
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General code refactor and cleanup.

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This commit is contained in:
Natalia Portillo
2022-11-23 18:16:04 +00:00
parent 40487268b4
commit aa5bbc1f5b
21 changed files with 340 additions and 331 deletions
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14
SpamSumContext.cs
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@@ -39,13 +39,13 @@
// http://www.samba.org/ftp/unpacked/junkcode/spamsum/
// http://ssdeep.sf.net/
namespace Aaru.Checksums;
using System;
using System.Runtime.CompilerServices;
using System.Text;
using Aaru.CommonTypes.Interfaces;
namespace Aaru.Checksums;
/// <inheritdoc />
/// <summary>Implements the SpamSum fuzzy hashing algorithm.</summary>
public sealed class SpamSumContext : IChecksum
@@ -56,7 +56,7 @@ public sealed class SpamSumContext : IChecksum
const uint HASH_INIT = 0x28021967;
const uint NUM_BLOCKHASHES = 31;
const uint SPAMSUM_LENGTH = 64;
const uint FUZZY_MAX_RESULT = 2 * SPAMSUM_LENGTH + 20;
const uint FUZZY_MAX_RESULT = (2 * SPAMSUM_LENGTH) + 20;
//"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
readonly byte[] _b64 =
@@ -77,7 +77,7 @@ public sealed class SpamSumContext : IChecksum
Bh = new BlockhashContext[NUM_BLOCKHASHES]
};
for(var i = 0; i < NUM_BLOCKHASHES; i++)
for(int i = 0; i < NUM_BLOCKHASHES; i++)
_self.Bh[i].Digest = new byte[SPAMSUM_LENGTH];
_self.Bhstart = 0;
@@ -99,7 +99,7 @@ public sealed class SpamSumContext : IChecksum
{
_self.TotalSize += len;
for(var i = 0; i < len; i++)
for(int i = 0; i < len; i++)
fuzzy_engine_step(data[i]);
}
@@ -274,7 +274,7 @@ public sealed class SpamSumContext : IChecksum
var sb = new StringBuilder();
uint bi = _self.Bhstart;
uint h = roll_sum();
var remain = (int)(FUZZY_MAX_RESULT - 1); /* Exclude terminating '\0'. */
int remain = (int)(FUZZY_MAX_RESULT - 1); /* Exclude terminating '\0'. */
result = new byte[FUZZY_MAX_RESULT];
/* Verify that our elimination was not overeager. */
@@ -471,7 +471,7 @@ public sealed class SpamSumContext : IChecksum
[MethodImpl(MethodImplOptions.AggressiveInlining)]
static string CToString(byte[] cString)
{
var count = 0;
int count = 0;
// ReSharper disable once LoopCanBeConvertedToQuery
// LINQ is six times slower