# Literal.java

    /*
    *  Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
    *
    *  WSO2 Inc. 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.synapse.commons.templates.uri.parser;

    import org.apache.synapse.commons.templates.uri.URITemplateException;

    import java.util.Map;

    public class Literal extends Node {

        private int tokenLength = 0;

        public Literal(String token) throws URITemplateException {
            super(token);
            tokenLength = token.length();
            if (tokenLength == 0) {
                throw new URITemplateException("Invalid literal token with zero length");
            }
            hasQueryTemplate = token.contains("?");
        }

        @Override
        String expand(Map<String, String> variables) {
            return token;
        }

        @Override
        int match(String uriFragment, Map<String, String> variables) {
            if(!token.endsWith("*")){
                if (uriFragment.length() < tokenLength) {
                    return -1;
                }
                for (int i = 0; i < tokenLength; i++) {
                    if (token.charAt(i) != uriFragment.charAt(i)) {
                        if (token.charAt(i) == '*' && i == token.length() - 1) {
                            return uriFragment.length();
                        }
                        return -1;
                    }
                }
                return tokenLength;
            }
            else {
                if (uriFragment.length() < tokenLength - 1) {
                    return -1;
                }
                for (int i = 0; i < tokenLength - 1 ; i++) {
                    if (token.charAt(i) != uriFragment.charAt(i)) {
                        if ( i == token.length() - 1) {
                            return uriFragment.length();
                        }
                        return -1;
                    }
                }
                return uriFragment.length();
            }
        }

        @Override
        String getToken() {
            return token;
        }

        @Override
        char getFirstCharacter() {
            return token.charAt(0);
        }
    }