/*
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* Copyright 2014 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.transport.ssh.commands;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.List;
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import org.kohsuke.args4j.Option;
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import com.gitblit.utils.JsonUtils;
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/**
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* Parent class of a list command.
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*
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* @author James Moger
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*
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* @param <T>
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*/
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public abstract class ListCommand<T> extends SshCommand {
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@Option(name = "--verbose", aliases = { "-v" }, usage = "verbose")
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protected boolean verbose;
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@Option(name = "--tabbed", usage = "generate tabbed-text output")
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protected boolean tabbed;
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@Option(name = "--json", usage = "generate JSON output")
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protected boolean json;
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private DateFormat df;
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protected abstract List<T> getItems() throws UnloggedFailure;
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protected void validateOutputFormat() throws UnloggedFailure {
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if (tabbed && json) {
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throw new UnloggedFailure(1, "Please specify --tabbed OR --json, not both!");
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}
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}
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@Override
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public void run() throws UnloggedFailure {
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validateOutputFormat();
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List<T> list = getItems();
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if (tabbed) {
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asTabbed(list);
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} else if (json) {
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asJSON(list);
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} else {
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asTable(list);
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}
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}
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protected abstract void asTable(List<T> list);
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protected abstract void asTabbed(List<T> list);
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protected void outTabbed(Object... values) {
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StringBuilder pattern = new StringBuilder();
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for (int i = 0; i < values.length; i++) {
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pattern.append("%s\t");
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}
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pattern.setLength(pattern.length() - 1);
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stdout.println(String.format(pattern.toString(), values));
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}
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protected void asJSON(List<T> list) {
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stdout.println(JsonUtils.toJsonString(list));
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}
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protected String formatDate(Date date) {
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if (df == null) {
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df = new SimpleDateFormat("yyyy-MM-dd");
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}
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return df.format(date);
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}
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}
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