/*
* 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.util.concurrent.atomic.AtomicInteger;
import org.apache.karaf.shell.api.console.Command;
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.DefaultParser;
import org.apache.karaf.shell.support.parsing.GogoParser;
public class CommandLineParser {
public static CommandLine buildCommandLine(Session session, String command, int cursor) {
AtomicInteger begOfLine = new AtomicInteger();
return buildCommandLine(session, command, cursor, begOfLine);
}
public static CommandLine buildCommandLine(Session session, final String command, int cursor, AtomicInteger begOfLine) {
int pos = 0;
while (true) {
String rem = command.substring(pos);
GogoParser cmdNameParser = new GogoParser(rem, rem.length());
String name = cmdNameParser.value();
name = session.resolveCommand(name);
Parser cmdParser = null;
for (Command cmd : session.getRegistry().getCommands()) {
if (name.equals(cmd.getScope() + ":" + cmd.getName())) {
cmdParser = cmd.getParser();
break;
}
}
if (cmdParser == null) {
cmdParser = new DefaultParser();
}
CommandLine cmdLine = cmdParser.parse(session, rem, cursor - pos);
int length = cmdLine.getBuffer().length();
if (length < rem.length()) {
char ch = rem.charAt(length);
if (ch == ';' || ch == '|') {
length++;
} else {
throw new IllegalArgumentException("Unrecognized character: '" + ch + "'");
}
}
pos += length;
if (cursor <= pos) {
begOfLine.set(pos - length);
return cmdLine;
}
}
}
public static String parse(Session session, String command) {
StringBuilder parsed = new StringBuilder();
int pos = 0;
while (pos < command.length()) {
String rem = command.substring(pos);
GogoParser cmdNameParser = new GogoParser(rem, rem.length());
String name = cmdNameParser.value();
name = session.resolveCommand(name);
Parser cmdParser = null;
for (Command cmd : session.getRegistry().getCommands()) {
if (name.equals(cmd.getScope() + ":" + cmd.getName())) {
cmdParser = cmd.getParser();
break;
}
}
if (cmdParser == null) {
cmdParser = new DefaultParser();
}
CommandLine cmdLine = cmdParser.parse(session, rem, rem.length());
parsed.append(cmdParser.preprocess(session, cmdLine));
int length = cmdLine.getBuffer().length();
if (length < rem.length()) {
char ch = rem.charAt(length);
if (ch == ';' || ch == '|') {
parsed.append(" ");
parsed.append(ch);
parsed.append(" ");
length++;
} else if (ch == '\n') {
parsed.append(ch);
length++;
} else {
throw new IllegalArgumentException("Unrecognized character: '" + ch + "'");
}
}
pos += length;
}
return parsed.toString();
}
}