74 lines
2.9 KiB
Java
74 lines
2.9 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.ssi;
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import java.io.PrintWriter;
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/**
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* Return the result associated with the supplied Server Variable.
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*
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* @author Bip Thelin
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* @author Paul Speed
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* @author Dan Sandberg
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* @author David Becker
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*/
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public class SSIEcho implements SSICommand {
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protected static final String DEFAULT_ENCODING = SSIMediator.ENCODING_ENTITY;
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protected static final String MISSING_VARIABLE_VALUE = "(none)";
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/**
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* @see SSICommand
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*/
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@Override
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public long process(SSIMediator ssiMediator, String commandName,
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String[] paramNames, String[] paramValues, PrintWriter writer) {
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String encoding = DEFAULT_ENCODING;
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String originalValue = null;
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String errorMessage = ssiMediator.getConfigErrMsg();
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for (int i = 0; i < paramNames.length; i++) {
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String paramName = paramNames[i];
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String paramValue = paramValues[i];
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if (paramName.equalsIgnoreCase("var")) {
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originalValue = paramValue;
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} else if (paramName.equalsIgnoreCase("encoding")) {
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if (isValidEncoding(paramValue)) {
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encoding = paramValue;
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} else {
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ssiMediator.log("#echo--Invalid encoding: " + paramValue);
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writer.write(ssiMediator.encode(errorMessage, SSIMediator.ENCODING_ENTITY));
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}
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} else {
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ssiMediator.log("#echo--Invalid attribute: " + paramName);
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writer.write(ssiMediator.encode(errorMessage, SSIMediator.ENCODING_ENTITY));
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}
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}
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String variableValue = ssiMediator.getVariableValue(originalValue, encoding);
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if (variableValue == null) {
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variableValue = MISSING_VARIABLE_VALUE;
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}
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writer.write(variableValue);
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return System.currentTimeMillis();
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}
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protected boolean isValidEncoding(String encoding) {
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return encoding.equalsIgnoreCase(SSIMediator.ENCODING_URL)
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|| encoding.equalsIgnoreCase(SSIMediator.ENCODING_ENTITY)
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|| encoding.equalsIgnoreCase(SSIMediator.ENCODING_NONE);
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}
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} |