/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.testsupport.selector;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.layout.model.RenderBox;
import org.pentaho.reporting.engine.classic.core.layout.model.RenderNode;
import org.pentaho.reporting.engine.classic.core.layout.process.IterateSimpleStructureProcessStep;
import org.pentaho.reporting.engine.classic.core.metadata.ElementType;
import java.io.IOException;
import java.io.StreamTokenizer;
import java.io.StringReader;
import java.util.ArrayList;
public class MatchFactory {
private static class NodeIterator extends IterateSimpleStructureProcessStep {
private boolean singleResult;
private ArrayList<RenderNode> nodes;
private NodeMatcher matcher;
private NodeIterator() {
nodes = new ArrayList<RenderNode>();
}
public RenderNode get( final RenderNode node, final NodeMatcher matcher ) {
if ( node == null ) {
throw new NullPointerException();
}
if ( matcher == null ) {
throw new NullPointerException();
}
this.matcher = matcher;
this.nodes.clear();
this.singleResult = true;
startProcessing( node );
if ( this.nodes.isEmpty() ) {
return null;
}
return this.nodes.get( 0 );
}
public RenderNode[] getAll( final RenderNode node, final NodeMatcher matcher ) {
if ( node == null ) {
throw new NullPointerException();
}
if ( matcher == null ) {
throw new NullPointerException();
}
this.matcher = matcher;
this.nodes.clear();
this.singleResult = false;
startProcessing( node );
return this.nodes.toArray( new RenderNode[this.nodes.size()] );
}
protected boolean startBox( final RenderBox box ) {
if ( singleResult && nodes.isEmpty() == false ) {
return false;
}
if ( matcher.matches( box ) ) {
nodes.add( box );
if ( singleResult ) {
return false;
}
}
return true;
}
protected void processOtherNode( final RenderNode node ) {
if ( singleResult && nodes.isEmpty() == false ) {
return;
}
if ( matcher.matches( node ) ) {
nodes.add( node );
}
}
}
public enum Type {
Start, Descendant, Child, Id, Class, Element
}
private static ElementMatcher createMatcher( StreamTokenizer tokenizer ) {
if ( tokenizer.ttype == '*' ) {
return new AnyNodeMatcher();
}
return new ElementMatcher( tokenizer.sval );
}
public static NodeMatcher parse( final String s ) throws IOException {
final StreamTokenizer tokenizer = new StreamTokenizer( new StringReader( s ) );
tokenizer.wordChars( '0', '9' );
tokenizer.ordinaryChar( '.' );
tokenizer.ordinaryChar( ',' );
tokenizer.ordinaryChars( 0, ' ' );
ElementMatcher elementMatcher = null;
NodeMatcher n = null;
Type selectorType = Type.Start;
int token;
while ( ( token = tokenizer.nextToken() ) != StreamTokenizer.TT_EOF ) {
if ( token == StreamTokenizer.TT_WORD || token == '*' ) {
NodeMatcher matcher = null;
switch ( selectorType ) {
case Start:
elementMatcher = createMatcher( tokenizer );
matcher = elementMatcher;
break;
case Child:
n = new ChildMatcher( n );
elementMatcher = createMatcher( tokenizer );
matcher = elementMatcher;
break;
case Descendant:
n = new DescendantMatcher( n );
elementMatcher = createMatcher( tokenizer );
matcher = elementMatcher;
break;
case Id:
if ( elementMatcher == null ) {
if ( n != null ) {
n = new DescendantMatcher( n );
}
elementMatcher = createMatcher( tokenizer );
matcher = elementMatcher;
}
elementMatcher.add( new AttributeMatcher( AttributeNames.Xml.NAMESPACE, AttributeNames.Xml.ID,
tokenizer.sval ) );
break;
case Class:
if ( elementMatcher == null ) {
if ( n != null ) {
n = new DescendantMatcher( n );
}
elementMatcher = createMatcher( tokenizer );
matcher = elementMatcher;
}
elementMatcher.add( new AttributeMatcher( AttributeNames.Core.NAMESPACE, AttributeNames.Core.STYLE_CLASS,
tokenizer.sval ) );
break;
default:
throw new IOException();
}
selectorType = Type.Element;
if ( matcher != null ) {
if ( n != null ) {
n = new AndMatcher( matcher, n );
} else {
n = matcher;
}
}
} else {
if ( token == '>' ) {
selectorType = Type.Child;
}
if ( token == '.' ) {
selectorType = Type.Class;
}
if ( token == '#' ) {
selectorType = Type.Id;
}
if ( Character.isWhitespace( token ) ) {
if ( selectorType == Type.Class || selectorType == Type.Id ) {
throw new IllegalStateException();
}
if ( selectorType != Type.Child ) {
selectorType = Type.Descendant;
}
}
}
}
return n;
}
public static RenderNode match( final RenderNode base, final NodeMatcher parse ) {
if ( parse == null ) {
throw new NullPointerException();
}
return new NodeIterator().get( base, parse );
}
public static RenderNode[] matchAll( final RenderNode base, final NodeMatcher parse ) {
if ( parse == null ) {
throw new NullPointerException();
}
return new NodeIterator().getAll( base, parse );
}
public static RenderNode match( final RenderNode base, final String selector ) throws IOException {
final NodeMatcher parse = parse( selector );
return match( base, parse );
}
public static RenderNode[] matchAll( final RenderNode base, final String selector ) throws IOException {
final NodeMatcher parse = parse( selector );
return matchAll( base, parse );
}
public static RenderNode findElementByName( final RenderNode section, final String name ) {
final RenderNode[] retval =
findElementsByAttribute( section, AttributeNames.Core.NAMESPACE, AttributeNames.Core.NAME, name );
if ( retval.length == 0 ) {
return null;
}
return retval[0];
}
public static RenderNode[] findElementsByName( final RenderNode section, final String name ) {
return findElementsByAttribute( section, AttributeNames.Core.NAMESPACE, AttributeNames.Core.NAME, name );
}
public static RenderNode[] findElementsByAttribute( final RenderNode section, final String ns, final String name,
final Object value ) {
return matchAll( section, new AttributeMatcher( ns, name, value ) );
}
public static RenderNode[] findElementsByElementType( final RenderNode section, final ElementType type ) {
return matchAll( section, new ElementTypeMatcher( type.getMetaData().getName() ) );
}
public static RenderNode[] findElementsByNodeType( final RenderNode section, final int type ) {
return matchAll( section, new RenderNodeTypeMatcher( type ) );
}
/*
* public static void main(final String[] args) throws IOException { System.out.println(new
* MatchFactory().parse("Test Element > test .c#i"));
*
* final AndMatcher a1 = new AndMatcher(new ElementMatcher("p"), new DescendantMatcher(new AndMatcher(new
* ElementMatcher("div"), new DescendantMatcher(new ElementMatcher("body"))))); System.out.println(a1); }
*/
}