com.google.gwt.logging.client.HtmlLogFormatter Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* Licensed 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 com.google.gwt.logging.client;
import com.google.gwt.logging.impl.FormatterImpl;
import java.util.logging.Level;
import java.util.logging.LogRecord;
/**
* Formats LogRecords into HTML. Subclasses should override the GetHtmlPrefix
* and GetHtmlSuffix methods rather than format to ensure that the message
* is properly escaped.
*/
public class HtmlLogFormatter extends FormatterImpl {
private static String newline = "__GWT_LOG_FORMATTER_BR__";
private boolean showStackTraces;
public HtmlLogFormatter(boolean showStackTraces) {
this.showStackTraces = showStackTraces;
}
// TODO(unnurg): Handle the outputting of Throwables.
@Override
public String format(LogRecord event) {
StringBuilder html = new StringBuilder(getHtmlPrefix(event));
html.append(getHtmlPrefix(event));
html.append(getRecordInfo(event, " "));
html.append(getEscaped(event.getMessage()));
if (showStackTraces) {
html.append(getEscaped(getStackTraceAsString(
event.getThrown(), newline, " ")));
}
html.append(getHtmlSuffix(event));
return html.toString();
}
protected String getHtmlPrefix(LogRecord event) {
StringBuilder prefix = new StringBuilder();
prefix.append("");
prefix.append("");
return prefix.toString();
}
/**
* @param event
*/
protected String getHtmlSuffix(LogRecord event) {
return "";
}
private String getColor(int logLevel) {
if (logLevel == Level.OFF.intValue()) {
return "#000"; // black
}
if (logLevel >= Level.SEVERE.intValue()) {
return "#F00"; // bright red
}
if (logLevel >= Level.WARNING.intValue()) {
return "#E56717"; // dark orange
}
if (logLevel >= Level.INFO.intValue()) {
return "#20b000"; // green
}
if (logLevel >= Level.CONFIG.intValue()) {
return "#2B60DE"; // blue
}
if (logLevel >= Level.FINE.intValue()) {
return "#F0F"; // purple
}
if (logLevel >= Level.FINER.intValue()) {
return "#F0F"; // purple
}
if (logLevel >= Level.FINEST.intValue()) {
return "#F0F"; // purple
}
return "#000"; // black
}
private String getEscaped(String text) {
text = text.replaceAll("<", "<");
text = text.replaceAll(">", ">");
// but allow the line breaks that we put in ourselves
text = text.replaceAll(newline, "
");
return text;
}
}