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/*
* Copyright 2014 gitblit.com.
*
* 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.gitblit.transport.ssh.commands;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import org.kohsuke.args4j.Option;
import com.gitblit.utils.JsonUtils;
/**
* Parent class of a list command.
*
* @author James Moger
*
* @param <T>
*/
public abstract class ListCommand<T> extends SshCommand {
@Option(name = "--verbose", aliases = { "-v" }, usage = "verbose")
protected boolean verbose;
@Option(name = "--tabbed", usage = "generate tabbed-text output")
protected boolean tabbed;
@Option(name = "--json", usage = "generate JSON output")
protected boolean json;
private DateFormat df;
protected abstract List<T> getItems() throws UnloggedFailure;
protected void validateOutputFormat() throws UnloggedFailure {
if (tabbed && json) {
throw new UnloggedFailure(1, "Please specify --tabbed OR --json, not both!");
}
}
@Override
public void run() throws UnloggedFailure {
validateOutputFormat();
List<T> list = getItems();
if (tabbed) {
asTabbed(list);
} else if (json) {
asJSON(list);
} else {
asTable(list);
}
}
protected abstract void asTable(List<T> list);
protected abstract void asTabbed(List<T> list);
protected void outTabbed(Object... values) {
StringBuilder pattern = new StringBuilder();
for (int i = 0; i < values.length; i++) {
pattern.append("%s\t");
}
pattern.setLength(pattern.length() - 1);
stdout.println(String.format(pattern.toString(), values));
}
protected void asJSON(List<T> list) {
stdout.println(JsonUtils.toJsonString(list));
}
protected String formatDate(Date date) {
if (df == null) {
df = new SimpleDateFormat("yyyy-MM-dd");
}
return df.format(date);
}
}
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