niko
101 lines
2.3 KiB
C#
101 lines
2.3 KiB
C#
using System;
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namespace ICSharpCode.SharpZipLib.Checksums
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{
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// Token: 0x0200000A RID: 10
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public sealed class Adler32 : IChecksum
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{
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// Token: 0x1700000F RID: 15
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// (get) Token: 0x0600006D RID: 109 RVA: 0x000060C1 File Offset: 0x000050C1
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public long Value
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{
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get
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{
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return (long)((ulong)this.checksum);
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}
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}
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// Token: 0x0600006E RID: 110 RVA: 0x000060CA File Offset: 0x000050CA
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public Adler32()
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{
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this.Reset();
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}
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// Token: 0x0600006F RID: 111 RVA: 0x000060D8 File Offset: 0x000050D8
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public void Reset()
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{
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this.checksum = 1U;
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}
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// Token: 0x06000070 RID: 112 RVA: 0x000060E4 File Offset: 0x000050E4
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public void Update(int value)
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{
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uint num = this.checksum & 65535U;
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uint num2 = this.checksum >> 16;
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num = (num + (uint)(value & 255)) % 65521U;
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num2 = (num + num2) % 65521U;
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this.checksum = (num2 << 16) + num;
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}
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// Token: 0x06000071 RID: 113 RVA: 0x0000612E File Offset: 0x0000512E
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public void Update(byte[] buffer)
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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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this.Update(buffer, 0, buffer.Length);
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}
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// Token: 0x06000072 RID: 114 RVA: 0x0000614C File Offset: 0x0000514C
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public void Update(byte[] buffer, int offset, int count)
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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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if (offset < 0)
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{
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throw new ArgumentOutOfRangeException("offset", "cannot be negative");
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}
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if (count < 0)
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{
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throw new ArgumentOutOfRangeException("count", "cannot be negative");
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}
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if (offset >= buffer.Length)
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{
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throw new ArgumentOutOfRangeException("offset", "not a valid index into buffer");
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}
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if (offset + count > buffer.Length)
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{
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throw new ArgumentOutOfRangeException("count", "exceeds buffer size");
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}
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uint num = this.checksum & 65535U;
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uint num2 = this.checksum >> 16;
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while (count > 0)
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{
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int num3 = 3800;
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if (num3 > count)
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{
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num3 = count;
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}
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count -= num3;
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while (--num3 >= 0)
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{
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num += (uint)(buffer[offset++] & byte.MaxValue);
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num2 += num;
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}
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num %= 65521U;
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num2 %= 65521U;
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}
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this.checksum = (num2 << 16) | num;
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}
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// Token: 0x04000066 RID: 102
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private const uint BASE = 65521U;
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// Token: 0x04000067 RID: 103
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private uint checksum;
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}
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}
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