org.eclim.plugin.core.command.history.HistoryListCommand.java Source code

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Here is the source code for org.eclim.plugin.core.command.history.HistoryListCommand.java

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/**
 * Copyright (C) 2005 - 2011  Eric Van Dewoestine
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.eclim.plugin.core.command.history;

import java.text.SimpleDateFormat;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;

import org.eclim.annotation.Command;

import org.eclim.command.CommandLine;
import org.eclim.command.Options;

import org.eclim.plugin.core.command.AbstractCommand;

import org.eclim.plugin.core.util.ProjectUtils;

import org.eclim.util.StringUtils;

import org.eclipse.core.internal.resources.File;

import org.eclipse.core.runtime.NullProgressMonitor;

import org.eclipse.team.core.history.IFileRevision;

import org.eclipse.team.internal.core.history.LocalFileHistory;

import org.joda.time.Period;

/**
 * Command to list available local history revisions for a given file.
 *
 * @author Eric Van Dewoestine
 */
@Command(name = "history_list", options = "REQUIRED p project ARG," + "REQUIRED f file ARG")
public class HistoryListCommand extends AbstractCommand {
    private static final SimpleDateFormat DATE_FORMATTER = new SimpleDateFormat("HH:mm EEE MMM dd yyyy");

    /**
     * {@inheritDoc}
     * @see org.eclim.command.Command#execute(CommandLine)
     */
    public Object execute(CommandLine commandLine) throws Exception {
        String project = commandLine.getValue(Options.PROJECT_OPTION);
        String filename = commandLine.getValue(Options.FILE_OPTION);

        File file = (File) ProjectUtils.getFile(project, filename);
        LocalFileHistory history = new LocalFileHistory(file, false /* include current */);
        history.refresh(new NullProgressMonitor());
        IFileRevision[] revisions = history.getFileRevisions();
        Arrays.sort(revisions, new Comparator<IFileRevision>() {
            public int compare(IFileRevision r1, IFileRevision r2) {
                return (int) (r2.getTimestamp() - r1.getTimestamp());
            }
        });

        ArrayList<HashMap<String, Object>> results = new ArrayList<HashMap<String, Object>>();
        for (IFileRevision revision : revisions) {
            HashMap<String, Object> result = new HashMap<String, Object>();
            result.put("timestamp", String.valueOf(revision.getTimestamp()));
            result.put("datetime", DATE_FORMATTER.format(new Date(revision.getTimestamp())));
            result.put("delta", delta(revision.getTimestamp()));
            results.add(result);
        }

        return results;
    }

    private String delta(long time) {
        // FIXME: a formatter can probably do this.
        Period period = new Period(time, System.currentTimeMillis());
        ArrayList<String> parts = new ArrayList<String>();

        int years = period.getYears();
        if (years > 0) {
            parts.add(years + " year" + (years == 1 ? "" : "s"));
        }

        int months = period.getMonths();
        if (months > 0) {
            parts.add(months + " month" + (months == 1 ? "" : "s"));
        }

        int weeks = period.getWeeks();
        if (weeks > 0) {
            parts.add(weeks + " week" + (weeks == 1 ? "" : "s"));
        }

        int days = period.getDays();
        if (days > 0) {
            parts.add(days + " day" + (days == 1 ? "" : "s"));
        }

        int hours = period.getHours();
        if (hours > 0) {
            parts.add(hours + " hour" + (hours == 1 ? "" : "s"));
        }

        int minutes = period.getMinutes();
        if (minutes > 0) {
            parts.add(minutes + " minute" + (minutes == 1 ? "" : "s"));
        }

        int seconds = period.getSeconds();
        if (seconds > 0) {
            parts.add(seconds + " second" + (seconds == 1 ? "" : "s"));
        }

        if (parts.size() == 0) {
            int millis = period.getMillis();
            if (millis > 0) {
                parts.add(millis + " millis");
            }
        }

        return StringUtils.join(parts.toArray(), ' ') + " ago";
    }
}