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Apache Commons Compress defines an API for working with compression and archive formats. These include bzip2, gzip, pack200, LZMA, XZ, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.

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/*
 * 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.compress.utils;

import java.io.IOException;

/**
 * Utility methods for parsing data and converting it to other formats.
 *
 * @since 1.26.0
 */
public final class ParsingUtils {
    /**
     * Parses the provided string value to an Integer, assuming a base-10 radix
     *
     * @param value string value to parse
     * @return parsed value as an int
     * @throws IOException when the value cannot be parsed
     */
    public static int parseIntValue(final String value) throws IOException {
        return parseIntValue(value, 10);
    }

    /**
     * Parse the provided string value to an Integer with a provided radix
     *
     * @param value string value to parse
     * @param radix radix value to use for parsing
     * @return parsed value as an int
     * @throws IOException when the value cannot be parsed
     */
    public static int parseIntValue(final String value, final int radix) throws IOException {
        try {
            return Integer.parseInt(value, radix);
        } catch (final NumberFormatException exp) {
            throw new IOException("Unable to parse int from string value: " + value);
        }
    }

    /**
     * Parses the provided string value to a Long, assuming a base-10 radix
     *
     * @param value string value to parse
     * @return parsed value as a long
     * @throws IOException when the value cannot be parsed
     */
    public static long parseLongValue(final String value) throws IOException {
        return parseLongValue(value, 10);
    }

    /**
     * Parses the provided string value to a Long with a provided radix
     *
     * @param value string value to parse
     * @param radix radix value to use for parsing
     * @return parsed value as a long
     * @throws IOException when the value cannot be parsed
     */
    public static long parseLongValue(final String value, final int radix) throws IOException {
        try {
            return Long.parseLong(value, radix);
        } catch (final NumberFormatException exp) {
            throw new IOException("Unable to parse long from string value: " + value);
        }
    }

    private ParsingUtils() {
        /* no instances */ }
}