/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.karaf.shell.impl.console.parsing;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.felix.gogo.runtime.threadio.ThreadIOImpl;
import org.apache.karaf.shell.api.action.Action;
import org.apache.karaf.shell.api.action.Command;
import org.apache.karaf.shell.api.action.Parsing;
import org.apache.karaf.shell.api.console.CommandLine;
import org.apache.karaf.shell.api.console.Parser;
import org.apache.karaf.shell.api.console.Session;
import org.apache.karaf.shell.impl.action.command.ActionCommand;
import org.apache.karaf.shell.impl.action.command.ManagerImpl;
import org.apache.karaf.shell.impl.console.HeadlessSessionImpl;
import org.apache.karaf.shell.impl.console.SessionFactoryImpl;
import org.apache.karaf.shell.support.parsing.CommandLineImpl;
import org.apache.karaf.shell.support.parsing.DefaultParser;
import org.apache.karaf.shell.support.parsing.GogoParser;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class ParsingTest {
@Test
public void testDefaultParser() {
String command = " foo bar (a + b) ; another command ";
String subCmd = " foo bar (a + b) ";
DefaultParser parser = new DefaultParser();
CommandLine line = parser.parse(null, command, command.length());
assertEquals(3, line.getArguments().length);
assertEquals("foo", line.getArguments()[0]);
assertEquals("bar", line.getArguments()[1]);
assertEquals("(a + b)", line.getArguments()[2]);
assertEquals(subCmd, line.getBuffer());
}
@Test
public void testCommandLineParser() {
SessionFactoryImpl sessionFactory = new SessionFactoryImpl(new ThreadIOImpl());
ManagerImpl manager = new ManagerImpl(sessionFactory, sessionFactory);
sessionFactory.getRegistry().register(new ActionCommand(manager, FooCommand.class));
sessionFactory.getRegistry().register(new ActionCommand(manager, AnotherCommand.class));
sessionFactory.getRegistry().register(new CustomParser());
Session session = new HeadlessSessionImpl(sessionFactory, sessionFactory.getCommandProcessor(),
new ByteArrayInputStream(new byte[0]), new PrintStream(new ByteArrayOutputStream()), new PrintStream(new ByteArrayOutputStream())
);
String parsed = CommandLineParser.parse(session, " foo bar (a + b); another command with spaces ");
assertEquals("foo bar (a + b) ; another \"command with spaces\"", parsed);
}
@Test
public void testCommandLineParserMultiLine() {
SessionFactoryImpl sessionFactory = new SessionFactoryImpl(new ThreadIOImpl());
ManagerImpl manager = new ManagerImpl(sessionFactory, sessionFactory);
sessionFactory.getRegistry().register(new ActionCommand(manager, FooCommand.class));
sessionFactory.getRegistry().register(new ActionCommand(manager, AnotherCommand.class));
sessionFactory.getRegistry().register(new CustomParser());
Session session = new HeadlessSessionImpl(sessionFactory, sessionFactory.getCommandProcessor(),
new ByteArrayInputStream(new byte[0]), new PrintStream(new ByteArrayOutputStream()), new PrintStream(new ByteArrayOutputStream())
);
String parsed = CommandLineParser.parse(session, "echo a\necho b");
assertEquals("echo a\necho b", parsed);
}
@Command(scope = "scope", name = "foo")
static class FooCommand implements Action {
@Override
public Object execute() throws Exception {
return null;
}
}
@Command(scope = "scope", name = "another")
@Parsing(CustomParser.class)
static class AnotherCommand implements Action {
@Override
public Object execute() throws Exception {
return null;
}
}
static class CustomParser implements Parser {
@Override
public CommandLine parse(Session session, String command, int cursor) {
GogoParser parser = new GogoParser(command, cursor);
List<String> args = new ArrayList<>();
args.add(parser.value());
parser.ws();
StringBuilder sb = new StringBuilder();
while (true) {
char ch = parser.next();
if (ch == 0 || ch == ';' || ch == '|') {
break;
} else {
sb.append(ch);
}
}
String arg = sb.toString().trim();
if (!arg.isEmpty()) {
args.add("\"" + arg + "\"");
}
return new CommandLineImpl(args.toArray(new String[args.size()]), args.size() - 1, sb.length(),
parser.position(),
command.substring(0, parser.position()));
}
@Override
public String preprocess(Session session, CommandLine cmdLine) {
StringBuilder parsed = new StringBuilder();
for (int i = 0 ; i < cmdLine.getArguments().length; i++) {
String arg = cmdLine.getArguments()[i];
if (i > 0) {
parsed.append(" ");
}
parsed.append(arg);
}
return parsed.toString();
}
}
}