dotNet/iTextSharp/XMLWorker の変更点

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* XMLWorker [#b004f80a]

** 概要 [#oa7bf0e6]
- HTMLのParseHtml()は上手く動かない事がある？
 Unable to cast object of type 'iTextSharp.text.html.simpleparser.CellWrapper' to type 'iTextSharp.text.Paragraph'.
- HTMLWorkerはすでにdeprecatedなので、XMLWorkerを使う。

** コード [#sdcae9d3]
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.tool.xml;
using System.IO;
 using iTextSharp.text;
 using iTextSharp.text.pdf;
 using iTextSharp.tool.xml;
 using System.IO;
 
 public class HtmlToPdf
 {
     private const string JapaneseFontName = "c:\\windows\\fonts\\msmincho.ttc,0";
 
     public static byte[] ConvertHtmlToPdf(string html)
     {
         MemoryStream output = new MemoryStream();
 
         using (var document = new Document(PageSize.A4, 30, 30, 30, 30))
         using (var writer = PdfWriter.GetInstance(document, output))
         {
             document.Open();
 
             var fontname = JapaneseFontName;
             var fontProvider = new XMLWorkerFontProvider();
             fontProvider.Register(fontname, "Serif");
 
             var cssText = @"body {font-family: Serif;}";
 
             using (var cssMS = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(cssText)))
             using (var htmlMS = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(html)))
             {
                 var xmlWorker = XMLWorkerHelper.GetInstance();
                 xmlWorker.ParseXHtml(writer, document, htmlMS, cssMS, System.Text.Encoding.UTF8, fontProvider);
             }
             document.Close();
         }
 
         return output.ToArray();
     }
 }
 

** 参考 [#f2e53114]
- http://sourceforge.net/projects/itextsharp/files/xmlworker/
- http://stackoverflow.com/questions/21106710/applying-style-to-div-having-a-class-name-itextsharp/21165654#21165654
- http://stackoverflow.com/questions/16101481/use-external-css-to-parse-xml/16105368#16105368
- http://stackoverflow.com/questions/15354005/html-to-list-using-xmlworker/15362705#15362705
- http://stackoverflow.com/questions/12113425/itextsharp-error-on-trying-to-parse-html-for-pdf-conversion