/*
* Copyright 2006-2007 Keith Visco, Edward Kuns
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.exolab.castor.builder.types;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.exolab.castor.xml.schema.Facet;
import org.exolab.javasource.JSourceCode;
/**
* A base class for types which support the pattern facet.
*
* @author <a href="mailto:keith AT kvisco DOT com">Keith Visco</a>
* @author <a href="mailto:edward DOT kuns AT aspect DOT com">Edward Kuns</a>
* @version $Revision: 6678 $ $Date: 2005-03-05 06:42:06 -0700 (Sat, 05 Mar 2005) $
* @since 1.1
*/
public abstract class AbstractPatternFacet extends XSType {
//--------------------------------------------------------------------------
/** The list of pattern facets. */
private List<String> _patterns = new LinkedList<String>();
//--------------------------------------------------------------------------
/**
* Adds a pattern branch for this XSType. To successfully pass the pattern
* facets, only one branch needs to pass.
*
* @param pattern The regular expression for this XSType.
*/
public final void addPattern(final String pattern) {
_patterns.add(pattern);
}
/**
* Get list of pattern facets.
*
* @return List of pattern facets.
*/
public final List<String> getPatterns() {
return _patterns;
}
//--------------------------------------------------------------------------
/**
* {@inheritDoc}
*/
protected void setFacet(final Facet facet) {
addPatternFacet(facet);
}
/**
* Transfer given facet if it is a pattern.
*
* @param facet The facet to transfer.
*/
protected final void addPatternFacet(final Facet facet) {
if (Facet.PATTERN.equals(facet.getName())) { addPattern(facet.getValue()); }
}
/**
* Generate the source code for pattern facet validation.
*
* @param jsc The JSourceCode to fill in.
* @param validatorName The name of the TypeValidator that the patterns should be added to.
*/
protected final void codePatternFacet(final JSourceCode jsc, final String validatorName) {
for (Iterator<String> i = _patterns.iterator(); i.hasNext(); ) {
jsc.add("{0}.addPattern(\"{1}\");", validatorName, escapePattern(i.next()));
}
}
/**
* Escapes special characters in the given String so that it can be printed correctly.
*
* @param str The String to escape.
* @return The escaped String, or null if the given String was null.
*/
private static String escapePattern(final String str) {
if (str == null) { return str; }
//-- make sure we have characters to escape
if (str.indexOf('\\') < 0 && str.indexOf('\"') < 0) { return str; }
StringBuilder sb = new StringBuilder();
char[] chars = str.toCharArray();
for (int i = 0; i < chars.length; i++) {
char ch = chars[i];
if (ch == '\\') { sb.append(ch); }
if (ch == '\"') { sb.append('\\'); }
sb.append(ch);
}
return sb.toString();
}
//--------------------------------------------------------------------------
}