一些 HTML内容比较/文本差异比较 开源代码

http://blog.csdn.net/zuoming120/article/details/6956963

http://htmldiff.codeplex.com/#

1. DiffPlex - a .NET Diff Generator    http://diffplex.codeplex.com/SourceControl/changeset/view/052fd342999b  原网站dll下载 http://diffplex.codeplex.com/

简介：

具体使用可以参考http://diffplex.codeplex.com/wikipage?title=library&referringTitle=Home

IDiffer是差异比较的核心类，提供了两个文本的低精度的大致比较

ISidebySideDiff：提供了高精度的比较以及可以用两栏对比显示差异

接口

 

Silverlight

Website

 

2.diffengine

简介：

功能强大，

缺点：文本每行不能超过1024个字符

DifferenceEngine.DiffList_TextFile sourceFile  null; DifferenceEngine.DiffList_TextFile destinationFile = null;
sourceFile = new DifferenceEngine.DiffList_TextFile("1.txt"); destinationFile = new DifferenceEngine.DiffList_TextFile("2.txt");
DifferenceEngine.DiffEngine engine = new DifferenceEngine.DiffEngine(); engine.ProcessDiff(sourceFile,destinationFile, DifferenceEngine.DiffEngineLevel.FastImperfect); ArrayList diffLines = engine.DiffReport(); foreach (DifferenceEngine.DiffResultSpan span in diffLines)  {      switch (span.Status)     {  case ifferenceEngine.DiffResultSpanStatus.NoChange:     //没改变      break;  case DifferenceEngine.DiffResultSpanStatus.AddDestination: //新增的     break;  case DifferenceEngine.DiffResultSpanStatus.DeleteSource: //已删除的     break; case DifferenceEngine.DiffResultSpanStatus.Replace: //修改的                      break; default:  //  默认                      break;
                }
            }

 

获取新增内容示例：

string str = ((DifferenceEngine.TextLine)(destinationFile.GetByIndex(span.DestIndex))).Line;

http://www.codeproject.com/KB/recipes/diffengine.aspx

 

3. htmldiff

简介：

HtmlDiff原本是Ruby版的HTML差异比较算法，后来有朋友做了个C#版本，特点是非常好用，过于简单 C#版：  http://htmldiff.codeplex.com/

Ruby版： http://github.com/myobie/htmldiff http://www.rohland.co.za/index.php/2009/10/31/csharp-html-diff-algorithm/

 

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4.NDiffDiff: A Diff Implementation for Lines and Chars in Text File

简介：

提供Winform Demo

http://www.codeproject.com/KB/recipes/NBDiffDiff.aspx