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/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package net.sourceforge.subsonic.taglib;
import org.apache.commons.lang.StringEscapeUtils;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.BodyTagSupport;
import java.io.IOException;
/**
* Escapes the characters in a <code>String</code> using JavaScript String rules.
* <p/>
* Escapes any values it finds into their JavaScript String form.
* Deals correctly with quotes and control-chars (tab, backslash, cr, ff, etc.)
* <p/>
* So a tab becomes the characters <code>'\\'</code> and
* <code>'t'</code>.
* <p/>
* The only difference between Java strings and JavaScript strings
* is that in JavaScript, a single quote must be escaped.
* <p/>
* Example:
* <pre>
* input string: He didn't say, "Stop!"
* output string: He didn\'t say, \"Stop!\"
* </pre>
*
* @author Sindre Mehus
*/
public class EscapeJavaScriptTag extends BodyTagSupport {
private String string;
public int doStartTag() throws JspException {
return EVAL_BODY_BUFFERED;
}
public int doEndTag() throws JspException {
try {
pageContext.getOut().print(StringEscapeUtils.escapeJavaScript(string));
} catch (IOException x) {
throw new JspTagException(x);
}
return EVAL_PAGE;
}
public void release() {
string = null;
super.release();
}
public String getString() {
return string;
}
public void setString(String string) {
this.string = string;
}
}
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