88 lines
3.2 KiB
C#
88 lines
3.2 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.Collections.Generic;
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using System.Threading;
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namespace dnSpy.Contracts.Hex.Operations {
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/// <summary>
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/// Search service
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/// </summary>
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public abstract class HexSearchService {
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/// <summary>
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/// Constructor
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/// </summary>
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protected HexSearchService() { }
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/// <summary>
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/// Gets the size of the data this instance searches for
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/// </summary>
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public abstract int ByteCount { get; }
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/// <summary>
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/// Finds the pattern
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/// </summary>
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/// <param name="startingPosition">Starting position</param>
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/// <param name="options">Options</param>
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/// <param name="cancellationToken">Cancellation token</param>
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/// <returns></returns>
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public HexBufferSpan? Find(HexBufferPoint startingPosition, HexFindOptions options, CancellationToken cancellationToken) {
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if (startingPosition.IsDefault)
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throw new ArgumentException();
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var buffer = startingPosition.Buffer;
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return Find(new HexBufferSpan(buffer, buffer.Span), startingPosition, options, cancellationToken);
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}
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/// <summary>
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/// Finds the pattern
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/// </summary>
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/// <param name="searchRange">Search range</param>
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/// <param name="startingPosition">Starting position</param>
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/// <param name="options">Options</param>
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/// <param name="cancellationToken">Cancellation token</param>
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/// <returns></returns>
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public HexBufferSpan? Find(HexBufferSpan searchRange, HexBufferPoint startingPosition, HexFindOptions options, CancellationToken cancellationToken) {
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foreach (var span in FindAll(searchRange, startingPosition, options, cancellationToken))
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return span;
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return null;
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}
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/// <summary>
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/// Finds all matches
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/// </summary>
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/// <param name="searchRange">Search range</param>
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/// <param name="options">Options</param>
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/// <param name="cancellationToken">Cancellation token</param>
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/// <returns></returns>
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public IEnumerable<HexBufferSpan> FindAll(HexBufferSpan searchRange, HexFindOptions options, CancellationToken cancellationToken) =>
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FindAll(searchRange, searchRange.Start, options, cancellationToken);
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/// <summary>
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/// Finds all matches
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/// </summary>
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/// <param name="searchRange">Search range</param>
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/// <param name="startingPosition">Starting position</param>
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/// <param name="options">Options</param>
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/// <param name="cancellationToken">Cancellation token</param>
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/// <returns></returns>
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public abstract IEnumerable<HexBufferSpan> FindAll(HexBufferSpan searchRange, HexBufferPoint startingPosition, HexFindOptions options, CancellationToken cancellationToken);
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}
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}
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