/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.forge.addon.shell.aesh;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.jboss.aesh.cl.CommandLine;
import org.jboss.aesh.cl.activation.OptionActivator;
import org.jboss.aesh.cl.builder.OptionBuilder;
import org.jboss.aesh.cl.completer.OptionCompleter;
import org.jboss.aesh.cl.converter.CLConverter;
import org.jboss.aesh.cl.exception.OptionParserException;
import org.jboss.aesh.cl.internal.ProcessedCommand;
import org.jboss.aesh.cl.internal.ProcessedOption;
import org.jboss.aesh.cl.parser.CommandLineParser;
import org.jboss.aesh.cl.validator.OptionValidator;
import org.jboss.aesh.cl.validator.OptionValidatorException;
import org.jboss.forge.addon.convert.ConverterFactory;
import org.jboss.forge.addon.shell.aesh.completion.OptionCompleterFactory;
import org.jboss.forge.addon.shell.ui.ShellContext;
import org.jboss.forge.addon.shell.ui.ShellValidationContext;
import org.jboss.forge.addon.shell.util.ShellUtil;
import org.jboss.forge.addon.ui.UICommand;
import org.jboss.forge.addon.ui.hints.InputType;
import org.jboss.forge.addon.ui.input.InputComponent;
import org.jboss.forge.addon.ui.input.ManyValued;
import org.jboss.forge.addon.ui.input.SingleValued;
import org.jboss.forge.addon.ui.metadata.UICommandMetadata;
import org.jboss.forge.addon.ui.util.InputComponents;
/**
* Contains utility methods to parse command lines
*
* @author <a href="mailto:stale.pedersen@jboss.org">Ståle W. Pedersen</a>
* @author <a href="ggastald@redhat.com">George Gastaldi</a>
*/
public class CommandLineUtil
{
private static final Logger logger = Logger.getLogger(CommandLineUtil.class.getName());
private static final String ARGUMENTS_INPUT_NAME = "arguments";
private ConverterFactory converterFactory;
public CommandLineUtil(ConverterFactory converterFactory)
{
this.converterFactory = converterFactory;
}
public CommandLineParser generateParser(UICommand command, ShellContext shellContext,
Map<String, InputComponent<?, Object>> inputs)
{
ProcessedCommand processedCommand = generateCommand(command, shellContext, inputs);
return new ForgeCommandLineParser(processedCommand, this, inputs);
}
private ProcessedCommand generateCommand(final UICommand command, final ShellContext shellContext,
final Map<String, InputComponent<?, Object>> inputs)
{
UICommandMetadata metadata = command.getMetadata(shellContext);
ProcessedCommand parameter = new ProcessedCommand(ShellUtil.shellifyName(metadata.getName()),
metadata.getDescription());
for (final InputComponent<?, Object> input : inputs.values())
{
final Object defaultValue = InputComponents.getValueFor(input);
final boolean isMultiple = input instanceof ManyValued;
final boolean hasValue = (InputComponents.getInputType(input) != InputType.CHECKBOX && !Boolean.class
.isAssignableFrom(input.getValueType()));
try
{
OptionBuilder optionBuilder = new OptionBuilder();
optionBuilder.name(input.getName())
.addDefaultValue(defaultValue == null ? null : defaultValue.toString())
.description(input.getLabel())
.hasMultipleValues(isMultiple)
.hasValue(hasValue)
.type(input.getValueType())
.required(input.isRequired());
OptionCompleter completer = OptionCompleterFactory.getCompletionFor(input, shellContext, converterFactory);
optionBuilder.completer(completer);
optionBuilder.activator(new OptionActivator()
{
@Override
public boolean isActivated(ProcessedCommand processedCommand)
{
return input.isEnabled();
}
}).validator(new OptionValidator<Object>()
{
@Override
public void validate(Object value) throws org.jboss.aesh.cl.validator.OptionValidatorException
{
InputComponents.setValueFor(converterFactory, input, value);
ShellValidationContext validationContext = new ShellValidationContext(shellContext);
input.validate(validationContext);
List<String> errors = validationContext.getErrors();
if (!errors.isEmpty())
{
throw new OptionValidatorException(errors.get(0));
}
}
}).converter(new CLConverter<Object>()
{
@Override
public Object convert(String value)
{
return InputComponents.convertToUIInputValue(converterFactory, input, value);
}
}).valueSeparator(' ');
if (input.getShortName() != InputComponents.DEFAULT_SHORT_NAME)
{
optionBuilder.shortName(input.getShortName());
}
ProcessedOption option = optionBuilder.create();
if (ARGUMENTS_INPUT_NAME.equals(input.getName()))
{
parameter.setArgument(option);
}
else
{
parameter.addOption(option);
}
}
catch (OptionParserException e)
{
logger.log(Level.SEVERE, "Error while parsing command option", e);
}
}
return parameter;
}
public Map<String, InputComponent<?, Object>> populateUIInputs(CommandLine commandLine,
Map<String, InputComponent<?, Object>> inputs)
{
Map<String, InputComponent<?, Object>> populatedInputs = new HashMap<String, InputComponent<?, Object>>();
for (Entry<String, InputComponent<?, Object>> entry : inputs.entrySet())
{
String name = entry.getKey();
InputComponent<?, Object> input = entry.getValue();
if (ARGUMENTS_INPUT_NAME.equals(name))
{
InputComponents.setValueFor(converterFactory, input, commandLine.getArgument().getValue());
populatedInputs.put(name, input);
}
if (commandLine.hasOption(name))
{
if (input instanceof ManyValued)
{
InputComponents.setValueFor(converterFactory, input, commandLine.getOptionValues(input.getName()));
populatedInputs.put(name, input);
}
else if (input instanceof SingleValued)
{
InputComponents.setValueFor(converterFactory, input, commandLine.getOptionValue(input.getName()));
populatedInputs.put(name, input);
}
}
}
return populatedInputs;
}
}