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/**
 * Copyright (c) 2012-2014, 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.Formattable;
import java.util.Formatter;
import lombok.EqualsAndHashCode;
import lombok.ToString;

/**
 * Decorator of a text.
 *
 * 

For example: * *

public void func(Object input) {
 *   Logger.debug("Long input '%[text]s' provided", input);
 * }
* * @author Yegor Bugayenko ([email protected]) * @version $Id$ * @since 0.1.5 */ @ToString @EqualsAndHashCode(of = "object") final class TextDecor implements Formattable { /** * Maximum length to show. */ public static final int MAX = 100; /** * The object. */ private final transient Object object; /** * Public ctor. * @param obj The object */ TextDecor(final Object obj) { this.object = obj; } /** * {@inheritDoc} * @checkstyle ParameterNumber (4 lines) */ @Override public void formatTo(final Formatter formatter, final int flags, final int width, final int precision) { if (this.object == null) { formatter.format("NULL"); } else { formatter.format("%s", TextDecor.pretty(this.object.toString())); } } /** * Make it look pretty. * @param text The text to prettify * @return The result */ private static String pretty(final String text) { final String result; if (text.length() < TextDecor.MAX) { result = text; } else { final int skip = text.length() - TextDecor.MAX; final StringBuilder output = new StringBuilder() .append(text.substring(0, (text.length() - skip) / 2)) // @checkstyle MultipleStringLiterals (1 line) .append("..") .append(skip) .append(".."); output.append( text.substring(text.length() - TextDecor.MAX + output.length()) ); result = output.toString(); } return result.replace("\n", "\\n"); } }




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