io.honeybadger.com.jcabi.log.TextDecor Maven / Gradle / Ivy
/**
* 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");
}
}