- * Copied from Apache Commons IO. - *
- * The default buffer size ({@value}). - */ - static final int DEFAULT_BUFFER_SIZE = 1024 * 4; - - /** - *- * Copied from Apache Commons IO. - *
- * Represents the end-of-file (or stream). - * @since 2.5 (made public) - */ - private static final int EOF = -1; - - /** - * Copies chars from a large (over 2GB) {@code Reader} to an {@code Appendable}. - *- * This method buffers the input internally, so there is no need to use a - * {@code BufferedReader}. - *
- * The buffer size is given by {@link #DEFAULT_BUFFER_SIZE}. - * - * @param input the {@code Reader} to read from - * @param output the {@code Appendable} to append to - * @return the number of characters copied - * @throws NullPointerException if the input or output is null - * @throws IOException if an I/O error occurs - * @since 2.7 - */ - static long copy(final Reader input, final Appendable output) throws IOException { - return copy(input, output, CharBuffer.allocate(DEFAULT_BUFFER_SIZE)); - } - - /** - * Copies chars from a large (over 2GB) {@code Reader} to an {@code Appendable}. - *- * This method uses the provided buffer, so there is no need to use a - * {@code BufferedReader}. - *
- * - * @param input the {@code Reader} to read from - * @param output the {@code Appendable} to write to - * @param buffer the buffer to be used for the copy - * @return the number of characters copied - * @throws NullPointerException if the input or output is null - * @throws IOException if an I/O error occurs - * @since 2.7 - */ - static long copy(final Reader input, final Appendable output, final CharBuffer buffer) throws IOException { - long count = 0; - int n; - while (EOF != (n = input.read(buffer))) { - ((Buffer) buffer).flip(); - output.append(buffer, 0, n); - count += n; - } - return count; - } - - /** - *- * Copied from Apache Commons IO. - *
- * Copies chars from a large (over 2GB) {@code Reader} to a {@code Writer}. - *- * This method buffers the input internally, so there is no need to use a - * {@code BufferedReader}. - *
- * The buffer size is given by {@link #DEFAULT_BUFFER_SIZE}. - * - * @param input the {@code Reader} to read from - * @param output the {@code Writer} to write to - * @return the number of characters copied - * @throws NullPointerException if the input or output is null - * @throws IOException if an I/O error occurs - * @since 1.3 - */ - static long copyLarge(final Reader input, final Writer output) throws IOException { - return copyLarge(input, output, new char[DEFAULT_BUFFER_SIZE]); - } - - /** - *
- * Copied from Apache Commons IO. - *
- * Copies chars from a large (over 2GB) {@code Reader} to a {@code Writer}. - *- * This method uses the provided buffer, so there is no need to use a - * {@code BufferedReader}. - *
- * - * @param input the {@code Reader} to read from - * @param output the {@code Writer} to write to - * @param buffer the buffer to be used for the copy - * @return the number of characters copied - * @throws NullPointerException if the input or output is null - * @throws IOException if an I/O error occurs - * @since 2.2 - */ - static long copyLarge(final Reader input, final Writer output, final char[] buffer) throws IOException { - long count = 0; - int n; - while (EOF != (n = input.read(buffer))) { - output.write(buffer, 0, n); - count += n; - } - return count; - } - -} +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 org.apache.commons.csv; + +import java.io.IOException; +import java.io.Reader; +import java.io.Writer; +import java.nio.Buffer; +import java.nio.CharBuffer; + +/** Copied from Apache Commons IO. */ +final class IOUtils { + + /** + *
+ * Copied from Apache Commons IO. + *
+ * The default buffer size ({@value}). + */ + static final int DEFAULT_BUFFER_SIZE = 1024 * 4; + + /** + *+ * Copied from Apache Commons IO. + *
+ * Represents the end-of-file (or stream). + * @since 2.5 (made public) + */ + private static final int EOF = -1; + + /** + * Copies chars from a large (over 2GB) {@code Reader} to an {@code Appendable}. + *+ * This method buffers the input internally, so there is no need to use a + * {@code BufferedReader}. + *
+ * The buffer size is given by {@link #DEFAULT_BUFFER_SIZE}. + * + * @param input the {@code Reader} to read from + * @param output the {@code Appendable} to append to + * @return the number of characters copied + * @throws NullPointerException if the input or output is null + * @throws IOException if an I/O error occurs + * @since 2.7 + */ + static long copy(final Reader input, final Appendable output) throws IOException { + return copy(input, output, CharBuffer.allocate(DEFAULT_BUFFER_SIZE)); + } + + /** + * Copies chars from a large (over 2GB) {@code Reader} to an {@code Appendable}. + *+ * This method uses the provided buffer, so there is no need to use a + * {@code BufferedReader}. + *
+ * + * @param input the {@code Reader} to read from + * @param output the {@code Appendable} to write to + * @param buffer the buffer to be used for the copy + * @return the number of characters copied + * @throws NullPointerException if the input or output is null + * @throws IOException if an I/O error occurs + * @since 2.7 + */ + static long copy(final Reader input, final Appendable output, final CharBuffer buffer) throws IOException { + long count = 0; + int n; + while (EOF != (n = input.read(buffer))) { + ((Buffer) buffer).flip(); + output.append(buffer, 0, n); + count += n; + } + return count; + } + + /** + *+ * Copied from Apache Commons IO. + *
+ * Copies chars from a large (over 2GB) {@code Reader} to a {@code Writer}. + *+ * This method buffers the input internally, so there is no need to use a + * {@code BufferedReader}. + *
+ * The buffer size is given by {@link #DEFAULT_BUFFER_SIZE}. + * + * @param input the {@code Reader} to read from + * @param output the {@code Writer} to write to + * @return the number of characters copied + * @throws NullPointerException if the input or output is null + * @throws IOException if an I/O error occurs + * @since 1.3 + */ + static long copyLarge(final Reader input, final Writer output) throws IOException { + return copyLarge(input, output, new char[DEFAULT_BUFFER_SIZE]); + } + + /** + *
+ * Copied from Apache Commons IO. + *
+ * Copies chars from a large (over 2GB) {@code Reader} to a {@code Writer}. + *+ * This method uses the provided buffer, so there is no need to use a + * {@code BufferedReader}. + *
+ * + * @param input the {@code Reader} to read from + * @param output the {@code Writer} to write to + * @param buffer the buffer to be used for the copy + * @return the number of characters copied + * @throws NullPointerException if the input or output is null + * @throws IOException if an I/O error occurs + * @since 2.2 + */ + static long copyLarge(final Reader input, final Writer output, final char[] buffer) throws IOException { + long count = 0; + int n; + while (EOF != (n = input.read(buffer))) { + output.write(buffer, 0, n); + count += n; + } + return count; + } + + /** No instances. */ + private IOUtils() { + // Noop + } + +}