Mysterious Carriage Return/Line Feed characters

B

bmcdougald

I am having a problem presenting some HTML that is the result of an XSL
transformation, due to the placement of some mysterious CR/LF
characters peppered in the HTML. These chars tend to appear in the
middle of HTML tags, like this table cell tag: <tCRLFd>, and it really
mucks up the formatting of the page.

I have taken esults of the transformation, and did a search replace on
all occurrences of a \n or \r character in the result string, but they
still appear. When I do a view source from the browser, the HTML
appears to have removed any "explicit" CRLF's in the file, but there
are still CR/LF chars peppered throughout the file.

I am using a PrintWriter object to write out the results. Could that
be adding in the extra CR/LF's?

I'm stumped.


*****************************************************
CODE
*****************************************************

import lotus.domino.*;

// Imported TraX classes

import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerConfigurationException;

// Imported SAX classes
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

// Imported java classes
import java.io.*;
import java.lang.*;
import java.util.*;


public class JavaAgent extends AgentBase {

public void NotesMain() {

try {

int i,j,k,t, y,x,z;
String str;
String valStr;
String prmStr;

// Get the parameter values entered on form

Session session = getSession();
AgentContext agentContext = session.getAgentContext();

Document req = agentContext.getDocumentContext();
String qStr = req.getItemValueString("Query_String");

String xmlsrc "d:\\tpr.xml";
String xslsrc = "http://localhost/web/xbb.nsf/tprs.xsl";

TransformerFactory tFactory = TransformerFactory.newInstance();
StreamSource strSrc = new StreamSource(xslsrc);
Transformer transformer = tFactory.newTransformer(strSrc);
StringWriter rw = new StringWriter();
StreamResult tout = new StreamResult(rw);


transformer.transform ( new StreamSource(xmlsrc), tout);

String szHtml = rw.toString();
String outStr = "";

int icnt=0;


String inString;

byte [] data = szHtml.getBytes ("8859_1");

ByteArrayInputStream bais = new ByteArrayInputStream(data);

PrintWriter pw = new PrintWriter(getAgentOutput());

BufferedReader ir = new BufferedReader(
new InputStreamReader(bais));


while ( (inString = ir.readLine()) != null ) {
inString=replace(inString,"\r","");
inString=replace(inString,"\n","");

pw.write(inString);
}

pw.flush();
ir.close();



} catch(Exception e) {

getAgentOutput().println("Content-type: text/html");
getAgentOutput().println("<html><head><title>Taymac</title></head><body>");
getAgentOutput().println("<font size=+1>No Matching Records Found for
the Specified Vendor.<br></br></font>");
getAgentOutput().println(e);
e.printStackTrace();
getAgentOutput().println("</body></html>");
}
}

///////////////////////////////////////////////////////
static String replace( String str, String replace, String with ){
///////////////////////////////////////////////////////
StringBuffer sb = null;
String temp = str;
boolean found = false;
int start = 0;
int stop = 0;

while( ( start = temp.indexOf( replace , stop )) != -1 )
{
found = true;
stop = start + replace.length();
sb = new StringBuffer( temp.length() + with.length() -
replace.length() );
sb.append( temp.substring( 0 , start ) );
sb.append( with );
sb.append( temp.substring( stop , temp.length() ));
temp = sb.toString();
stop += with.length() - replace.length();
}

if( ! found ){
return str;
}else{
return sb.toString();
}
}
}
 
B

bmcdougald

I solved this problem on a whim. I added a flush() call after every
write() and that appears to have cleared up the problem.
 
B

Boudewijn Dijkstra

I solved this problem on a whim. I added a flush() call after every
write() and that appears to have cleared up the problem.

That is a work-around, not a solution to the problem. To begin in solving the
problem, you should identify the stream that is inserting the characters. My
guess would be at PrintWriter.

Furthermore, your replace method is unneccessarily complex, even without
considering the existence of the String.replaceAll method.
 

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