/lib/saxonB/net/sf/saxon/event/XQueryEmitter.java

package net.sf.saxon.event;



import net.sf.saxon.trans.XPathException;

import net.sf.saxon.om.FastStringBuffer;



import java.io.IOException;



/**

 * The XQueryEmitter is designed to serialize an XQuery that was originally embedded in an

 * XML document. It is a variant of the XMLEmitter, and differs in that the operators <, >, <=, >=, <<, and <<

 * are output without escaping. They are recognized by virtue of the fact that they appear in text or attribute

 * content between curly braces but not in quotes.

 */



public class XQueryEmitter extends XMLEmitter {



    /**

     * Write contents of array to current writer, after escaping special characters.

     * This method converts the XML special characters (such as < and &) into their

     * predefined entities.

     *

     * @param chars       The character sequence containing the string

     * @param inAttribute Set to true if the text is in an attribute value

     */



    protected void writeEscape(final CharSequence chars, final boolean inAttribute) throws IOException, XPathException {

        boolean inBraces = false;

        FastStringBuffer buff = new FastStringBuffer(chars.length());

        for (int i=0; i<chars.length(); i++) {

            char c = chars.charAt(i);

            if (!inBraces && c=='{' && chars.charAt(i+1)!='{') {

                inBraces = true;

                buff.append((char)0);   // switch disable-output-escaping on

            } else if (inBraces && c=='}') {

                inBraces = false;

                buff.append((char)0);   // switch disable-output-escaping off

            } else if (inBraces && c=='"') {

                buff.append((char)0);

                i++;

                do {

                    buff.append(c);

                    c = chars.charAt(i++);

                } while (c != '"');

                buff.append((char)0);

                i--;

            } else if (inBraces && c=='\'') {

                buff.append((char)0);

                i++;

                do {

                    buff.append(c);

                    c = chars.charAt(i++);

                } while (c != '\'');

                buff.append((char)0);

                i--;

            }

            buff.append(c);

        }

        super.writeEscape(buff, inAttribute); 

    }

}



//

// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");

// you may not use this file except in compliance with the License. You may obtain a copy of the

// License at http://www.mozilla.org/MPL/

//

// Software distributed under the License is distributed on an "AS IS" basis,

// WITHOUT WARRANTY OF ANY KIND, either express or implied.

// See the License for the specific language governing rights and limitations under the License.

//

// The Original Code is: all this file

//

// The Initial Developer of the Original Code is Michael H. Kay.

//

// Contributor(s):

//