org.lockss.tdb.InputData Maven / Gradle / Ivy
/*/*
Copyright (c) 2000-2018, Board of Trustees of Leland Stanford Jr. University,
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
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may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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*/
package org.lockss.tdb;
import java.util.*;
import org.apache.commons.cli.*;
/**
*
* Utility class defining an input data option.
*
*
* If the input data option created by {@link #option()} is requested on the
* command line by {@link #parse(Map, CommandLineAccessor)}, {@link #get(Map)}
* will return a file name string.
*
*
* @author Thib Guicherd-Callin
* @since 1.72
*/
public class InputData {
/**
*
* Prevent instantiation.
*
*
* @since 1.72
*/
private InputData() {
// Prevent instantiation
}
/**
*
* Key for the standard input data option ({@value}).
*
*
* @since 1.72
*/
public static final String KEY = "input-data";
/**
*
* Returns an instance of the input data option.
*
*
* @return An {@link Option} instance.
* @since 1.72
*/
public static Option option() {
return Option.builder()
.longOpt(KEY)
.hasArg()
.argName("DATFILE")
.desc("read TDB data from DATFILE")
.build();
}
/**
*
* Processes a {@link CommandLineAccessor} instance and stores appropriate
* information in the given options map.
*
*
* @param options
* An options map.
* @param cmd
* A {@link CommandLineAccessor} instance.
* @since 1.72
*/
public static void parse(Map options,
CommandLineAccessor cmd) {
if (cmd.hasOption(KEY)) {
if (cmd.getArgs().length > 0) {
AppUtil.error("--%s cannot be used with command line arguments", KEY);
}
options.put(KEY, cmd.getOptionValue(KEY));
}
}
/**
*
* Retrieves a file name string from the options map if the input data options
* has been requested at the command line, null otherwise.
*
*
* @param options
* An options map.
* @return A file name string, or null.
* @since 1.72
*/
public static String get(Map options) {
return (String)options.get(KEY);
}
}