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Viewing changes to contrib/NGit/NGit.Revwalk.Filter/AuthorRevFilter.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2011-06-27 17:03:13 UTC
  • mto: (1.8.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 54.
  • Revision ID: james.westby@ubuntu.com-20110627170313-6cvz3s19x6e9hqe9
Import upstream version 2.5.92+dfsg

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contrib/NGit/NGit.Revwalk.Filter/AuthorRevFilter.cs
 
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/*
 
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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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All rights reserved.
 
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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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conditions are met:
 
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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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  written permission.
 
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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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*/
 
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using System;
 
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using NGit;
 
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using NGit.Revwalk;
 
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using NGit.Revwalk.Filter;
 
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using NGit.Util;
 
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using Sharpen;
 
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namespace NGit.Revwalk.Filter
 
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{
 
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        /// <summary>Matches only commits whose author name matches the pattern.</summary>
 
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        /// <remarks>Matches only commits whose author name matches the pattern.</remarks>
 
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        public class AuthorRevFilter
 
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        {
 
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                /// <summary>Create a new author filter.</summary>
 
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                /// <remarks>
 
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                /// Create a new author filter.
 
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                /// <p>
 
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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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                /// <p>
 
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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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                /// </remarks>
 
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                /// <param name="pattern">regular expression pattern to match.</param>
 
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                /// <returns>
 
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                /// a new filter that matches the given expression against the author
 
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                /// name and address of a commit.
 
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                /// </returns>
 
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                public static RevFilter Create(string pattern)
 
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                {
 
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                        if (pattern.Length == 0)
 
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                        {
 
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                                throw new ArgumentException(JGitText.Get().cannotMatchOnEmptyString);
 
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                        }
 
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                        if (SubStringRevFilter.Safe(pattern))
 
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                        {
 
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                                return new AuthorRevFilter.SubStringSearch(pattern);
 
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                        }
 
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                        return new AuthorRevFilter.PatternSearch(pattern);
 
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                }
 
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                public AuthorRevFilter()
 
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                {
 
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                }
 
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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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                {
 
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                        byte[] raw = cmit.RawBuffer;
 
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                        int b = RawParseUtils.Author(raw, 0);
 
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                        if (b < 0)
 
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                        {
 
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                                return RawCharSequence.EMPTY;
 
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                        }
 
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                        int e = RawParseUtils.NextLF(raw, b, '>');
 
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                        return new RawCharSequence(raw, b, e);
 
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                }
 
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                private class PatternSearch : PatternMatchRevFilter
 
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                {
 
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                        internal PatternSearch(string patternText) : base(patternText, true, true, Sharpen.Pattern
 
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                                .CASE_INSENSITIVE)
 
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                        {
 
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                        }
 
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                        protected internal override CharSequence Text(RevCommit cmit)
 
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                        {
 
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                                return TextFor(cmit);
 
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                        }
 
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                        public override RevFilter Clone()
 
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                        {
 
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                                return new AuthorRevFilter.PatternSearch(Pattern());
 
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                        }
 
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                }
 
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                private class SubStringSearch : SubStringRevFilter
 
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                {
 
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                        protected internal SubStringSearch(string patternText) : base(patternText)
 
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                        {
 
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                        }
 
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                        protected internal override RawCharSequence Text(RevCommit cmit)
 
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                        {
 
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                                return TextFor(cmit);
 
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                        }
 
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                }
 
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        }
 
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}