NameValueParameterSplitter.java

/**
 * Copyright 2016 Yahoo Inc.
 *
 * Licensed 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 com.yahoo.pulsar.admin.cli.utils;

import java.util.HashMap;
import java.util.Map;

import com.beust.jcommander.IStringConverter;
import com.beust.jcommander.ParameterException;

public class NameValueParameterSplitter implements IStringConverter<Map<String, String>> {

    @Override
    public Map<String, String> convert(String value) {
        boolean error = false;
        Map<String, String> map = new HashMap<String, String>();

        String[] nvpairs = value.split(",");

        for (String nvpair : nvpairs) {
            error = true;
            if (nvpair != null) {
                String[] nv = nvpair.split("=");
                if (nv != null && nv.length == 2) {
                    nv[0] = nv[0].trim();
                    nv[1] = nv[1].trim();
                    if (!nv[0].isEmpty() && !nv[1].isEmpty() && nv[0].charAt(0) != '\'') {
                        map.put(nv[0], nv[1]);
                        error = false;
                    }
                }
            }

            if (error) {
                break;
            }
        }

        if (error) {
            throw new ParameterException("unable to parse bad name=value parameter list: " + value);
        }

        return map;
    }

}