package com.lexicalscope.jewel.cli;

 import java.util.List;

 /*

  * Copyright 2011 Tim Wood

  *

  * 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. 

  */

 class HelpMessageOptionSummaryBuilderImpl implements OptionHelpMessage {

     final StringBuilder result;

     public HelpMessageOptionSummaryBuilderImpl(final StringBuilder message) {

         result = message;

     }

     public HelpMessageOptionSummaryBuilderImpl() {

         this(new StringBuilder());

     }

     @Override public void startOptionalOption() {

         result.append("[");

     }

     @Override public void startMandatoryOption() {

     }

     @Override public void longName(final List<String> longNames) {

         String sepatator = "";

         for (final String longName : longNames) {

             result.append(sepatator).append("--").append(longName);

             sepatator = " ";

         }

     }

     @Override public void shortName(final List<String> shortNames) {

         for (final String shortName : shortNames) {

             result.append(" -").append(shortName);

         }

     }

     private void multiValued() {

         result.append("...");

     }

     @Override public void multiValuedWithCustomPattern(final String pattern) {

         singleValuedWithCustomPattern(pattern);

         multiValued();

     }

     @Override public void multiValuedWithCustomPattern() {

         singleValued();

         multiValued();

     }

     @Override public void singleValuedWithCustomPattern(final String pattern) {

         result.append(" /").append(pattern).append("/");

     }

     @Override public void singleValued() {

         result.append(" value");

     }

     @Override public void noValued() {

         // OK

     }

     @Override public void endOptionalOption() {

         result.append("]");

     }

     @Override public void endOptionalOption(final String description) {

         endOptionalOption();

         optionDescription(description);

     }

     @Override public void endMandatoryOption() {

     }

     @Override public void endMandatoryOption(final String description) {

         optionDescription(description);

     }

     private void optionDescription(final String description) {

         result.append(" : ").append(description);

     }

     @Override public String toString()

     {

         return result.toString();

     }

 }