com.mattc.launcher.util.Utility.java Source code

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Here is the source code for com.mattc.launcher.util.Utility.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Matthew Crocco
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * 
 */
package com.mattc.launcher.util;

import java.io.Closeable;
import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import com.google.common.base.CharMatcher;
import com.google.common.base.Predicates;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterators;

public final class Utility {

    /** Splitter for Splitting by Whitespace. */
    private static final Splitter wsSplitter = Splitter.on(CharMatcher.WHITESPACE).trimResults().omitEmptyStrings();

    /**
     * Get Index of an Object in a Collection.
     * 
     * @param list
     * @param item
     * @return
     */
    public static int getIndexOf(Collection<?> list, Object item) {
        final Iterator<?> iter = list.iterator();
        return Iterators.indexOf(iter, Predicates.equalTo(item));
    }

    /**
     * Silently Close a Stream/Writer/Reader. If it is null or an exception is
     * thrown it is silenced.
     * 
     * @param closeable
     */
    public static void closeSilently(Closeable closeable) {
        if (closeable == null)
            return;

        try {
            closeable.close();
        } catch (final IOException e) {
        }
    }

    /**
     * Turn an Iterable of Strings into a single string.
     * 
     * @param iter
     * @return
     */
    public static String stringify(Iterable<String> iter, boolean spaces) {
        final StringBuilder sb = new StringBuilder();

        for (final String s : iter) {
            sb.append(s.trim() + (spaces ? " " : ""));
        }

        return sb.toString();
    }

    /**
     * Turn an Iterable of Strings into a single string.
     * 
     * @param iter
     * @return
     */
    public static String stringify(Iterable<String> iter) {
        return stringify(iter, true);
    }

    /**
     * Return a List of Strings from a single String. The List is created by
     * splitting the given String at every whitespace.
     * 
     * @param from
     * @return
     */
    public static List<String> splitAtWhitespace(String from) {
        return wsSplitter.splitToList(from);
    }

    /**
     * Returns an Iterable of Strings from a single String. The Iterable is
     * created by splitting the given String at every whitespace.
     * 
     * @param from
     * @return
     */
    public static Iterable<String> splitAtWhitespaceIterable(String from) {
        return wsSplitter.split(from);
    }
}