001 /*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020 package org.crsh.cmdline.matcher;
021
022 import org.crsh.cmdline.ArgumentDescriptor;
023 import org.crsh.cmdline.ClassDescriptor;
024 import org.crsh.cmdline.OptionDescriptor;
025 import org.crsh.cmdline.binding.ClassFieldBinding;
026 import org.crsh.cmdline.ParameterDescriptor;
027
028 import java.io.IOException;
029 import java.lang.reflect.Field;
030 import java.util.ArrayList;
031 import java.util.HashSet;
032 import java.util.List;
033 import java.util.Map;
034 import java.util.Set;
035
036 public class ClassMatch<T> extends CommandMatch<T, ClassDescriptor<T>, ClassFieldBinding> {
037
038 /** . */
039 private final ClassDescriptor<T> descriptor;
040
041 public ClassMatch(
042 ClassDescriptor<T> descriptor,
043 List<OptionMatch<ClassFieldBinding>> optionMatches,
044 List<ArgumentMatch<ClassFieldBinding>> argumentMatches,
045 String rest) {
046 super(optionMatches, argumentMatches, rest);
047
048 //
049 this.descriptor = descriptor;
050 }
051
052 @Override
053 public ClassDescriptor<T> getDescriptor() {
054 return descriptor;
055 }
056
057 @Override
058 public void printMan(Appendable writer) throws IOException {
059 descriptor.printMan(writer);
060 }
061
062 @Override
063 public void printUsage(Appendable writer) throws IOException {
064 descriptor.printUsage(writer);
065 }
066
067 @Override
068 public Set<ParameterDescriptor<?>> getParameters() {
069 Set<ParameterDescriptor<?>> unused = new HashSet<ParameterDescriptor<?>>();
070 unused.addAll(descriptor.getArguments());
071 unused.addAll(descriptor.getOptions());
072 return unused;
073 }
074
075 @Override
076 public List<ParameterMatch<?, ?>> getParameterMatches() {
077 List<ParameterMatch<?, ?>> matches = new ArrayList<ParameterMatch<?, ?>>();
078 matches.addAll(getOptionMatches());
079 matches.addAll(getArgumentMatches());
080 return matches;
081 }
082
083 @Override
084 protected Object doInvoke(Resolver context, T command, Map<ParameterDescriptor<?>, Object> values) throws CmdInvocationException, CmdSyntaxException {
085 for (ParameterDescriptor<ClassFieldBinding> parameter : descriptor.getParameters()) {
086 Object value = values.get(parameter);
087
088 //
089 if (value == null) {
090 if (parameter.isRequired()) {
091 if (parameter instanceof ArgumentDescriptor) {
092 ArgumentDescriptor<?> argument = (ArgumentDescriptor<?>)parameter;
093 throw new CmdSyntaxException("Missing argument " + argument.getName());
094 } else {
095 OptionDescriptor<?> option = (OptionDescriptor<?>)parameter;
096 throw new CmdSyntaxException("Missing option " + option.getNames());
097 }
098 }
099 } else {
100 Field f = parameter.getBinding().getField();
101 try {
102 f.setAccessible(true);
103 f.set(command, value);
104 }
105 catch (Exception e) {
106 throw new CmdInvocationException(e.getMessage(), e);
107 }
108 }
109 }
110
111 //
112 return null;
113 }
114 }