Quadcap Embeddable Server

com/quadcap/http/servlets/jsp/TagJsp.java

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package com.quadcap.http.servlets.jsp;

/* Copyright 1999 - 2003 Quadcap Software.  All rights reserved.
 *
 * This software is distributed under the Quadcap Free Software License.
 * This software may be used or modified for any purpose, personal or
 * commercial.  Open Source redistributions are permitted.  Commercial
 * redistribution of larger works derived from, or works which bundle
 * this software requires a "Commercial Redistribution License"; see
 * http://www.quadcap.com/purchase.
 *
 * Redistributions qualify as "Open Source" under  one of the following terms:
 *   
 *    Redistributions are made at no charge beyond the reasonable cost of
 *    materials and delivery.
 *
 *    Redistributions are accompanied by a copy of the Source Code or by an
 *    irrevocable offer to provide a copy of the Source Code for up to three
 *    years at the cost of materials and delivery.  Such redistributions
 *    must allow further use, modification, and redistribution of the Source
 *    Code under substantially the same terms as this license.
 *
 * Redistributions of source code must retain the copyright notices as they
 * appear in each source code file, these license terms, and the
 * disclaimer/limitation of liability set forth as paragraph 6 below.
 *
 * Redistributions in binary form must reproduce this Copyright Notice,
 * these license terms, and the disclaimer/limitation of liability set
 * forth as paragraph 6 below, in the documentation and/or other materials
 * provided with the distribution.
 *
 * The Software is provided on an "AS IS" basis.  No warranty is
 * provided that the Software is free of defects, or fit for a
 * particular purpose.  
 *
 * Limitation of Liability. Quadcap Software shall not be liable
 * for any damages suffered by the Licensee or any third party resulting
 * from use of the Software.
 */

import java.io.PrintWriter;

import org.xml.sax.AttributeList;

/**
 * Useful base class for all JSP tag handlers.
 *
 * @author Stan Bailes
 */
public abstract class TagJsp implements TagHandler, TagInstance {
    TagContext                  context         = null;
    String                      tagName         = null;

    public TagJsp() {}

    public TagJsp(TagContext context) {
        this.context = context;
    }

    public abstract TagInstance makeInstance(TagContext context);

    public String getTagName() { return tagName; }

        throws JspException 
    {
        this.tagName = tagName;
    }

    public void doEndTag() throws JspException {}

    public void doCharacters(char[] ch, int off, int cnt)
        throws JspException
    {
    }

    public void doTemplateCharacters(char[] ch, int off, int cnt) {
        PrintWriter w = context.getPrintWriter();

        w.print("out.print(\"");
        for (int i = 0; i < cnt; i++) {
            char c = ch[off + i];
            switch (c) {
            case '\n':
                w.print("\\n");
                break;
            case '\r':
                w.print("\\r");
                break;
            case '\t':
                w.print("\\t");
                break;
            case '\'':
                w.print("\\'");
                break;
            case '\"':
                w.print("\\\"");
                break;
            case '\\':
                w.print("\\\\");
                break;
            default:
                if (c > 0xfff) {
                    w.print("\\u");
                    w.print(Integer.toHexString(c));
                } else if (c > 0xff) {
                    w.print("\\u0");
                    w.print(Integer.toHexString(c));
                } else if (c <= 0x1f || c >= 0xf7f) {
                    w.print("\\u00");
                    w.print(Integer.toHexString(c));
                } else {
                    w.print((char)c);
                }
            }
        }
        w.println("\");");
    }

        StringBuffer sb = new StringBuffer();
            sb.append(' ');
            sb.append("[" + String.valueOf(i) + "]");
            sb.append("=\"");
            sb.append("\"");
        }
        return sb.toString();
    }
}