/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.directory.studio.schemaeditor.model.alias;
import java.util.ArrayList;
import java.util.List;
/**
* The AliasesParser implements a parser for Aliases {@link String}.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class AliasesStringParser
{
/** The scanner */
private AliasesStringScanner scanner;
/** The parsed aliases */
private List<Alias> aliases;
/**
* Creates a new instance of LdapFilterParser.
*/
public AliasesStringParser()
{
this.scanner = new AliasesStringScanner();
this.aliases = new ArrayList<Alias>();
}
/**
* Gets the parsed aliases.
*
* @return the parsed aliases
*/
public List<Alias> getAliases()
{
return aliases;
}
/**
* Parses the given aliases String.
*
* @param str the aliases String
*/
public void parse( String str )
{
// reset state
aliases.clear();
scanner.reset( str );
// handle error tokens before filter
AliasesStringToken token = scanner.nextToken();
// loop till aliases end or EOF
do
{
switch ( token.getType() )
{
case AliasesStringToken.ALIAS:
{
aliases.add( new DefaultAlias( token.getValue() ) );
break;
}
case AliasesStringToken.ERROR_ALIAS_START:
{
String previousTokenValue = token.getValue();
token = scanner.nextToken();
if ( token.getType() == AliasesStringToken.ERROR_ALIAS_SUBSTRING )
{
aliases.add( new AliasWithStartError( previousTokenValue + token.getValue(), previousTokenValue
.charAt( 0 ) ) );
break;
}
else
{
aliases.add( new AliasWithStartError( previousTokenValue, previousTokenValue.charAt( 0 ) ) );
continue;
}
}
case AliasesStringToken.ERROR_ALIAS_PART:
{
String previousTokenValue = token.getValue();
token = scanner.nextToken();
if ( token.getType() == AliasesStringToken.ERROR_ALIAS_SUBSTRING )
{
aliases.add( new AliasWithPartError( previousTokenValue + token.getValue(), previousTokenValue
.charAt( previousTokenValue.length() - 1 ) ) );
break;
}
else
{
aliases.add( new AliasWithPartError( previousTokenValue, previousTokenValue
.charAt( previousTokenValue.length() - 1 ) ) );
continue;
}
}
default:
{
break;
}
}
// next token
token = scanner.nextToken();
}
while ( token.getType() != AliasesStringToken.EOF );
}
}