81 lines
3.4 KiB
C#
81 lines
3.4 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Text;
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namespace dnSpy.Contracts.Hex {
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sealed class HexChangeImpl : HexChange {
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readonly HexPosition oldPosition;
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readonly HexPosition newPosition;
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readonly byte[] oldData;
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readonly byte[] newData;
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public override long Delta => newData.LongLength - oldData.LongLength;
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public override byte[] NewData => newData;
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public override HexPosition NewPosition => newPosition;
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public override HexPosition NewEnd => newPosition + newData.LongLength;
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public override HexPosition NewLength => newData.LongLength;
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public override HexSpan NewSpan => new HexSpan(newPosition, (ulong)newData.LongLength);
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public override byte[] OldData => oldData;
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public override HexPosition OldPosition => oldPosition;
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public override HexPosition OldEnd => oldPosition + oldData.LongLength;
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public override HexPosition OldLength => oldData.LongLength;
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public override HexSpan OldSpan => new HexSpan(oldPosition, (ulong)oldData.LongLength);
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public HexChangeImpl(HexPosition position, byte[] oldData, byte[] newData) {
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if (position > HexPosition.MaxEndPosition || position + oldData.LongLength > HexPosition.MaxEndPosition)
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throw new ArgumentOutOfRangeException(nameof(position));
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if (position + newData.LongLength > HexPosition.MaxEndPosition)
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throw new ArgumentOutOfRangeException(nameof(position));
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oldPosition = position;
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newPosition = position;
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this.oldData = oldData ?? throw new ArgumentNullException(nameof(oldData));
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this.newData = newData ?? throw new ArgumentNullException(nameof(newData));
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}
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public HexChangeImpl(HexPosition oldPosition, byte[] oldData, HexPosition newPosition, byte[] newData) {
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if (oldPosition > HexPosition.MaxEndPosition || oldPosition + oldData.LongLength > HexPosition.MaxEndPosition)
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throw new ArgumentOutOfRangeException(nameof(oldPosition));
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if (newPosition > HexPosition.MaxEndPosition || newPosition + newData.LongLength > HexPosition.MaxEndPosition)
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throw new ArgumentOutOfRangeException(nameof(newPosition));
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this.oldPosition = oldPosition;
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this.newPosition = newPosition;
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this.oldData = oldData ?? throw new ArgumentNullException(nameof(oldData));
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this.newData = newData ?? throw new ArgumentNullException(nameof(newData));
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}
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public override string ToString() => $"old={OldSpan}:'{GetString(OldData)}' new={NewSpan}:'{GetString(NewData)}'";
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static string GetString(byte[] d) {
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const int maxBytes = 16;
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const string ellipsis = "...";
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bool tooMuchData = d.LongLength > maxBytes;
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var sb = new StringBuilder((tooMuchData ? maxBytes + ellipsis.Length : d.Length) * 2);
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for (int i = 0; i < d.Length && i < maxBytes; i++)
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sb.Append(d[i].ToString("X2"));
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if (tooMuchData)
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sb.Append(ellipsis);
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return sb.ToString();
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}
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}
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}
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