mirror of git://gcc.gnu.org/git/gcc.git
132 lines
4.3 KiB
Java
132 lines
4.3 KiB
Java
/* SimpleFormatter.java --
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A class for formatting log records into short human-readable messages
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Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.util.logging;
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import gnu.java.lang.CPStringBuilder;
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.text.DateFormat;
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import java.util.Date;
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/**
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* A <code>SimpleFormatter</code> formats log records into
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* short human-readable messages, typically one or two lines.
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*
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* @author Sascha Brawer (brawer@acm.org)
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*/
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public class SimpleFormatter
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extends Formatter
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{
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/**
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* Constructs a SimpleFormatter.
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*/
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public SimpleFormatter()
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{
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}
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/**
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* An instance of a DateFormatter that is used for formatting
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* the time of a log record into a human-readable string,
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* according to the rules of the current locale. The value
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* is set after the first invocation of format, since it is
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* common that a JVM will instantiate a SimpleFormatter without
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* ever using it.
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*/
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private DateFormat dateFormat;
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/**
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* The character sequence that is used to separate lines in the
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* generated stream. Somewhat surprisingly, the Sun J2SE 1.4
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* reference implementation always uses UNIX line endings, even on
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* platforms that have different line ending conventions (i.e.,
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* DOS). The GNU implementation does not replicate this bug.
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*
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* @see Sun bug parade, bug #4462871,
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* "java.util.logging.SimpleFormatter uses hard-coded line separator".
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*/
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static final String lineSep = System.getProperty("line.separator");
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/**
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* Formats a log record into a String.
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*
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* @param record the log record to be formatted.
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*
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* @return a short human-readable message, typically one or two
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* lines. Lines are separated using the default platform line
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* separator.
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*
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* @throws NullPointerException if <code>record</code>
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* is <code>null</code>.
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*/
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public String format(LogRecord record)
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{
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CPStringBuilder buf = new CPStringBuilder(180);
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if (dateFormat == null)
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dateFormat = DateFormat.getDateTimeInstance();
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buf.append(dateFormat.format(new Date(record.getMillis())));
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buf.append(' ');
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buf.append(record.getSourceClassName());
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buf.append(' ');
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buf.append(record.getSourceMethodName());
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buf.append(lineSep);
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buf.append(record.getLevel());
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buf.append(": ");
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buf.append(formatMessage(record));
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buf.append(lineSep);
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Throwable throwable = record.getThrown();
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if (throwable != null)
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{
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StringWriter sink = new StringWriter();
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throwable.printStackTrace(new PrintWriter(sink, true));
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buf.append(sink.toString());
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}
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return buf.toString();
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}
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}
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