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Important SAX Guideline (was: encoding problem fixed)

• From: David Megginson <david@m...>
• To: "XML-Dev Mailing list" <xml-dev@i...>
• Date: Fri, 30 Jul 1999 06:44:17 -0400 (EDT)

James Tauber writes:

 > In short, I changed in my CommandLine (the class run when FOP takes
 > a FOT file as input) code the line:
 > 
 >    SAXProcessor fop = new SAXProcessor(parser, new InputSource(new
 > FileReader(args[0])));
 > 
 > to the line:
 > 
 >    SAXProcessor fop = new SAXProcessor(parser,
 > com.jclark.xsl.sax.Driver.fileInputSource(args[0]));

You could also have tried

  SAXProcessor fop =
    new SAXProcessor(parser, new InputSource(new FileInputStream(args[0])));

Here is a good, general SAX guideline:

  Always use an InputStream in preference to a Reader when you don't
  know the XML document's character encoding in advance.

I know that that seems backwards from ordinary Java usage,
but when you use an InputStream, a SAX parser can often (usually?)
autodetect a document's encoding because it has access to the raw
bytes; when you use a Reader, the SAX parser gets the characters
predigested.


All the best,


David

-- 
David Megginson                 david@m...
           http://www.megginson.com/

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  • encoding problem fixed
    • From: "James Tauber" <jtauber@j...>

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