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The Apache Log4j Implementation
/**
* Copyright (c) 2012-2017, jcabi.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer. 2) Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution. 3) Neither the name of the jcabi.com nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jcabi.log;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import lombok.EqualsAndHashCode;
import lombok.ToString;
/**
* Processor of formatting string and arguments, before sending it to
* {@link String#format(String,Object[])}.
*
* @author Marina Kosenko ([email protected])
* @author Yegor Bugayenko ([email protected])
* @version $Id: 993473c7c99cda800183b6f5db006b19777bef25 $
* @since 0.1
*/
@ToString
@EqualsAndHashCode(of = { "format", "arguments" })
final class PreFormatter {
/**
* Pattern used for matching format string arguments.
*/
private static final Pattern PATTERN = Pattern.compile(
// @checkstyle LineLength (1 line)
"%(\\d+\\$)?(\\[([A-Za-z\\-\\.0-9]+)\\])?[\\+\\-]?(?:\\d*(?:\\.\\d+)?)?[a-zA-Z%]"
);
/**
* List of no argument specifier.
*/
private static final List NO_ARG_SPECIFIERS =
Arrays.asList("%n", "%%");
/**
* The formatting string.
*/
private transient String format;
/**
* List of arguments.
*/
private transient List
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