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.ArrayList;
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import java.util.Date;
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import java.util.List;
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import org.kohsuke.args4j.Argument;
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import org.kohsuke.args4j.Option;
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import com.gitblit.utils.StringUtils;
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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", aliases = { "-t" }, usage = "as tabbed output")
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private boolean tabbed;
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@Argument(index = 0, metaVar = "REGEX", usage = "regex filter expression")
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protected String regexFilter;
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private DateFormat df;
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protected abstract List<T> getItems();
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protected abstract boolean matches(T t);
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@Override
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public void run() {
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List<T> list = getItems();
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List<T> filtered;
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if (StringUtils.isEmpty(regexFilter)) {
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// no regex filter
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filtered = list;
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} else {
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// regex filter the list
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filtered = new ArrayList<T>();
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for (T t : list) {
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if (matches(t)) {
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filtered.add(t);
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}
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}
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}
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if (tabbed) {
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asTabbed(filtered);
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} else {
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asTable(filtered);
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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 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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