package org.apache.karaf.jdbc.command.parsing;
/*
* 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.
*/
import java.util.ArrayList;
import java.util.List;
import org.apache.karaf.shell.api.action.lifecycle.Service;
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.support.parsing.CommandLineImpl;
import org.apache.karaf.shell.support.parsing.GogoParser;
/**
* A parser for JDBC commands using SQL.
*/
@Service
public class JdbcParser implements Parser {
@Override
public CommandLine parse(Session session, String command, int cursor) {
GogoParser parser = new GogoParser(command, cursor);
List<String> args = parser.statement();
List<String> nargs = new ArrayList<>();
int state = 0;
for (String arg : args) {
switch (state) {
// command
case 0:
nargs.add(arg);
state = 1;
break;
// option or target
case 1:
nargs.add(arg);
if (!arg.startsWith("-")) {
state = 2;
}
break;
// first sql fragment
case 2:
nargs.add(arg);
state = 3;
break;
// addtional sql
case 3:
nargs.set(nargs.size() - 1, nargs.get(nargs.size() - 1) + " " + arg);
break;
}
}
nargs.set(nargs.size() - 1, "\"" + nargs.get(nargs.size() - 1) + "\"");
return new CommandLineImpl(
nargs.toArray(new String[nargs.size()]),
parser.cursorArgumentIndex(),
Math.max(parser.argumentPosition(), nargs.size()),
cursor,
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();
}
}