mobi.cangol.mobile.logging.Log Maven / Gradle / Ivy
/**
* Copyright (c) 2013 Cangol
*
* 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 mobi.cangol.mobile.logging;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
/**
* @author Cangol
*/
public class Log {
private Log() {
}
private static int level = android.util.Log.VERBOSE;
private static boolean format = false;
public static String makeLogTag(Class cls) {
final String tag = cls.getSimpleName();
return (tag.length() > 50) ? tag.substring(0, 50) : tag;
}
/**
* 设置类对象TAG
*
* @param obj
*/
public static void setLogTag(Object obj) {
setLogTag(obj.getClass(), obj);
}
private static Field findField(Class clazz, String name) {
if (clazz != Object.class) {
try {
return clazz.getDeclaredField(name);
} catch (NoSuchFieldException e) {
return findField(clazz.getSuperclass(), name);
}
}
return null;
}
/**
* 设置类的TAG
*
* @param clazz
* @param obj
*/
public static void setLogTag(Class clazz, Object obj) {
if (clazz != Object.class) {
Field field = null;
try {
field = findField(clazz, "TAG");
if (field != null) {
if (!Modifier.isPrivate(field.getModifiers())) {
field.setAccessible(true);
field.set(obj, makeLogTag(clazz));
} else {
Log.e("field TAG is private!");
}
} else {
Log.e("not field is TAG");
}
} catch (IllegalAccessException e) {
//
}
}
}
public static void setLogLevelFormat(int level, boolean format) {
Log.level = level;
Log.format = format;
}
public static int getLevel() {
return level;
}
public static boolean isFormat() {
return format;
}
// VERBOSE log
public static void v(String msg) {
formatLog(android.util.Log.VERBOSE, null, msg, null);
}
public static void v(String tag, String msg) {
formatLog(android.util.Log.VERBOSE, tag, msg, null);
}
public static void v(String tag, String msg, Throwable t) {
formatLog(android.util.Log.VERBOSE, tag, msg, t);
}
// INFO log
public static void i(String msg) {
formatLog(android.util.Log.INFO, null, msg, null);
}
public static void i(String tag, String msg) {
formatLog(android.util.Log.INFO, tag, msg, null);
}
public static void i(String tag, String msg, Throwable t) {
formatLog(android.util.Log.INFO, tag, msg, t);
}
// DEBUG log
public static void d(String msg) {
formatLog(android.util.Log.DEBUG, null, msg, null);
}
public static void d(String tag, String msg) {
formatLog(android.util.Log.DEBUG, tag, msg, null);
}
public static void d(String tag, String msg, Throwable t) {
formatLog(android.util.Log.DEBUG, tag, msg, t);
}
// WARN log
public static void w(String msg) {
formatLog(android.util.Log.WARN, null, msg, null);
}
public static void w(String tag, String msg) {
formatLog(android.util.Log.WARN, tag, msg, null);
}
public static void w(String tag, String msg, Throwable t) {
formatLog(android.util.Log.WARN, tag, msg, t);
}
// ERROR log
public static void e(String msg) {
formatLog(android.util.Log.ERROR, null, msg, null);
}
public static void e(String tag, String msg) {
formatLog(android.util.Log.ERROR, tag, msg, null);
}
public static void e(String tag, String msg, Throwable t) {
formatLog(android.util.Log.ERROR, tag, msg, t);
}
private static void formatLog(int logLevel, String tag, String msg, Throwable error) {
if (level > logLevel) {
return;
}
final StackTraceElement stackTrace = new Throwable().getStackTrace()[2];
final String classname = stackTrace.getClassName();
final String filename = stackTrace.getFileName();
final String methodName = stackTrace.getMethodName();
final int linenumber = stackTrace.getLineNumber();
String output = null;
if (format) {
output = String.format("%s.%s(%s:%d)-->%s", classname, methodName, filename, linenumber, msg);
} else {
output = msg;
}
if (null == tag) {
tag = (filename != null && filename.contains(".java")) ? filename.replace(".java", "") : "";
}
if (output == null) {
output = "" + null;
}
switch (logLevel) {
case android.util.Log.VERBOSE:
if (error == null) {
android.util.Log.v(tag, output);
} else {
android.util.Log.v(tag, output, error);
}
break;
case android.util.Log.DEBUG:
if (error == null) {
android.util.Log.d(tag, output);
} else {
android.util.Log.d(tag, output, error);
}
break;
case android.util.Log.INFO:
if (error == null) {
android.util.Log.i(tag, output);
} else {
android.util.Log.i(tag, output, error);
}
break;
case android.util.Log.WARN:
if (error == null) {
android.util.Log.w(tag, output);
} else {
android.util.Log.w(tag, output, error);
}
break;
case android.util.Log.ERROR:
if (error == null) {
android.util.Log.e(tag, output);
} else {
android.util.Log.e(tag, output, error);
}
break;
default:
break;
}
}
}