de.codesourcery.eve.skills.util.Misc.java Source code

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Here is the source code for de.codesourcery.eve.skills.util.Misc.java

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/**
 * Copyright 2004-2009 Tobias Gierke <tobias.gierke@code-sourcery.de>
 *
 * 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 de.codesourcery.eve.skills.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

import javax.swing.SwingUtilities;

import org.apache.commons.lang.StringUtils;

/**
 * Miscellanous stuff.
 *
 * @author tobias.gierke@code-sourcery.de
 */
public final class Misc {

    private Misc() {
    }

    public static Calendar stripToDay(Date d) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(d);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal;
    }

    public static void runOnEventThread(Runnable r) {
        if (SwingUtilities.isEventDispatchThread()) {
            r.run();
        } else {
            try {
                SwingUtilities.invokeAndWait(r);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            } catch (InvocationTargetException e) {
                throw new RuntimeException(e);
            }
        }
    }

    public static void runOnEventThreadLater(Runnable r) {
        if (SwingUtilities.isEventDispatchThread()) {
            r.run();
        } else {
            SwingUtilities.invokeLater(r);
        }
    }

    public static final String readFile(IInputStreamProvider in) throws IOException {

        StringBuilder result = new StringBuilder();
        String line = null;
        final InputStream stream = in.createInputStream();
        try {
            final BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
            while ((line = reader.readLine()) != null) {
                result.append(line);
            }
            return result.toString();
        } finally {
            stream.close();
        }
    }

    public static String wrap(String s, String lineDelimiter, int maxLength) {

        if (s == null || s.length() < maxLength) {
            return s;
        }

        final StringBuilder result = new StringBuilder();
        for (Iterator<String> it = wrap(s, maxLength).iterator(); it.hasNext();) {
            result.append(it.next());
            if (it.hasNext()) {
                result.append(lineDelimiter);
            }
        }
        return result.toString();
    }

    public static Collection<String> wrap(String s, int maxLength) {

        if (StringUtils.isBlank(s)) {
            return Collections.emptyList();
        }

        if (s.length() <= maxLength) {
            final Collection<String> res = new ArrayList<String>();
            res.add(s);
            return res;
        }

        final List<String> lines = new ArrayList<String>();

        int i0 = 0;
        int i1 = 0;
        int lastSplit = -1;
        for (; i1 < s.length(); i1++) {
            final char c = s.charAt(i1);

            if (c == ' ' || c == '.' || c == ',') {
                lastSplit = i1;
            }

            final int count = i1 - i0;
            if (count > maxLength) {
                if (lastSplit != -1) {
                    lines.add(s.substring(i0, lastSplit));
                    i0 = lastSplit + 1;
                } else {
                    lines.add(s.substring(i0, i1));
                    i0 = i1;
                }
                i1 = i0;
                lastSplit = -1;
            }
        }

        if (i1 - i0 > 0 && i0 < s.length()) {
            lines.add(s.substring(i0, i1));
        }

        return lines;
    }
}