org.primefaces.util.IOUtils Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of primefaces Show documentation
There is a newer version: 15.0.0-RC1
/*
 * The MIT License
 *
 * Copyright (c) 2009-2025 PrimeTek Informatics
 *
 * 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 org.primefaces.util;

import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.nio.charset.Charset;
import java.util.function.Consumer;

public class IOUtils {

    private IOUtils() {

    }

    public static String toString(InputStream is, Charset charset) throws IOException {
        char[] buffer = new char[1024];

        StringBuilder out = new StringBuilder();
        Reader in = new InputStreamReader(is, charset);
        int read = 0;
        while ((read = in.read(buffer, 0, buffer.length)) != -1) {
            out.append(buffer, 0, read);
        }

        return out.toString();
    }

    public static byte[] toByteArray(InputStream input) throws IOException {
        byte[] buffer = new byte[1024];

        ByteArrayOutputStream output = new ByteArrayOutputStream();
        int read = 0;
        while ((read = input.read(buffer)) != -1) {
            output.write(buffer, 0, read);
        }

        return output.toByteArray();
    }

    public static void copyLarge(InputStream input, OutputStream output) throws IOException {
        byte[] buffer = new byte[1024 * 4];

        int read = 0;
        while ((read = input.read(buffer)) != -1) {
            output.write(buffer, 0, read);
        }
    }

    /**
     * Closes the given {@link Closeable} as a null-safe operation while consuming IOException by the given {@code consumer}.
     *
     * @param closeable The resource to close, may be null.
     * @param consumer Consumes the IOException thrown by {@link Closeable#close()}.
     */
    public static void closeQuietly(final AutoCloseable closeable, final Consumer consumer) {
        if (closeable != null) {
            try {
                closeable.close();
            }
            catch (final Exception e) {
                if (consumer != null) {
                    consumer.accept(e);
                }
            }
        }
    }
}