/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.cli;
import org.elasticsearch.common.io.Streams;
import org.elasticsearch.common.util.Callback;
import java.io.IOException;
import java.io.InputStream;
/**
*
*/
public class HelpPrinter {
private static final String HELP_FILE_EXT = ".help";
public void print(CliToolConfig config, Terminal terminal) {
print(config.toolType(), config.name(), terminal);
}
public void print(String toolName, CliToolConfig.Cmd cmd, Terminal terminal) {
print(cmd.cmdType(), toolName + "-" + cmd.name(), terminal);
}
private static void print(Class clazz, String name, final Terminal terminal) {
terminal.println(Terminal.Verbosity.SILENT);
try (InputStream input = clazz.getResourceAsStream(name + HELP_FILE_EXT)) {
Streams.readAllLines(input, new Callback<String>() {
@Override
public void handle(String line) {
terminal.println(Terminal.Verbosity.SILENT, line);
}
});
} catch (IOException ioe) {
ioe.printStackTrace(terminal.writer());
}
terminal.println();
}
}