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This code is derived from jgit (http://eclipse.org/jgit).
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Copyright owners are documented in jgit's IP log.
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This program and the accompanying materials are made available
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under the terms of the Eclipse Distribution License v1.0 which
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accompanies this distribution, is reproduced below, and is
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available at http://www.eclipse.org/org/documents/edl-v10.php
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Redistribution and use in source and binary forms, with or
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without modification, are permitted provided that the following
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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- Neither the name of the Eclipse Foundation, Inc. nor the
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names of its contributors may be used to endorse or promote
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products derived from this software without specific prior
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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using NGit.Revwalk.Filter;
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namespace NGit.Revwalk.Filter
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/// <summary>Matches only commits whose message matches the pattern.</summary>
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/// <remarks>Matches only commits whose message matches the pattern.</remarks>
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public class MessageRevFilter
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/// <summary>Create a message filter.</summary>
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/// Create a message filter.
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/// An optimized substring search may be automatically selected if the
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/// pattern does not contain any regular expression meta-characters.
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/// The search is performed using a case-insensitive comparison. The
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/// character encoding of the commit message itself is not respected. The
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/// filter matches on raw UTF-8 byte sequences.
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/// <param name="pattern">regular expression pattern to match.</param>
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/// a new filter that matches the given expression against the
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/// message body of the commit.
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public static RevFilter Create(string pattern)
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if (pattern.Length == 0)
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throw new ArgumentException(JGitText.Get().cannotMatchOnEmptyString);
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if (SubStringRevFilter.Safe(pattern))
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return new MessageRevFilter.SubStringSearch(pattern);
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return new MessageRevFilter.PatternSearch(pattern);
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public MessageRevFilter()
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// Don't permit us to be created.
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internal static RawCharSequence TextFor(RevCommit cmit)
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byte[] raw = cmit.RawBuffer;
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int b = RawParseUtils.CommitMessage(raw, 0);
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return RawCharSequence.EMPTY;
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return new RawCharSequence(raw, b, raw.Length);
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private class PatternSearch : PatternMatchRevFilter
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internal PatternSearch(string patternText) : base(patternText, true, true, Sharpen.Pattern
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.CASE_INSENSITIVE | Sharpen.Pattern.DOTALL)
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protected internal override CharSequence Text(RevCommit cmit)
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return TextFor(cmit);
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public override RevFilter Clone()
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return new MessageRevFilter.PatternSearch(Pattern());
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private class SubStringSearch : SubStringRevFilter
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protected internal SubStringSearch(string patternText) : base(patternText)
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protected internal override RawCharSequence Text(RevCommit cmit)
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return TextFor(cmit);