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package com.olio.util;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.net.UnknownHostException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
/**
* Created by ewilson90 on 5/22/14.
*
* Taken from: http://zerocredibility.wordpress.com/2012/03/08/android-advanced-logger/
*/
public class ALog {
private static class LogContext {
LogContext(StackTraceElement element) {
// this.className = element.getClassName();
this.simpleClassName = getSimpleClassName(element.getClassName());
this.methodName = element.getMethodName();
this.lineNumber = element.getLineNumber();
}
// String className;
String simpleClassName;
String methodName;
int lineNumber;
}
public enum Level {
V(1), D(2), I(3), W(4), E(5);
private int value;
private Level(int value) {
this.value = value;
}
int getValue() {
return value;
}
};
private static final DateFormat FLOG_FORMAT = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss.SSS");
private static final File LOG_DIR = new File(
Environment.getExternalStorageDirectory() + File.separator + "alog");
private static boolean fileLogging = false;
private static String tag = "";
private static Level level = Level.V;
private static final BlockingQueue<String> logQueue = new LinkedBlockingQueue<String>();
private static Runnable queueRunner = new Runnable() {
@Override
public void run() {
String line;
try {
while ((line = logQueue.take()) != null) {
if (!Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
continue;
}
if (!LOG_DIR.exists() && !LOG_DIR.mkdirs()) {
continue;
}
File logFile = new File(LOG_DIR, tag + ".log");
Writer w = null;
try {
w = new FileWriter(logFile, true);
w.write(line);
w.close();
} catch (IOException e) {
} finally {
if (w != null) {
try {
w.close();
} catch (IOException e1) {
}
}
}
}
} catch (InterruptedException e) {
}
}
};
static {
new Thread(queueRunner).start();
}
private static LogContext getContext() {
StackTraceElement[] trace = Thread.currentThread().getStackTrace();
StackTraceElement element = trace[5]; // frame below us; the caller
LogContext context = new LogContext(element);
return context;
}
private static final String getMessage(String s, Object... args) {
s = String.format(s, args);
LogContext c = getContext();
String msg = c.simpleClassName + "." + c.methodName + "@"
+ c.lineNumber + ": " + s;
return msg;
}
private static String getSimpleClassName(String className) {
int i = className.lastIndexOf(".");
if (i == -1) {
return className;
}
return className.substring(i + 1);
}
public static void setLevel(Level l) {
level = l;
}
public static void setTag(String t) {
tag = t;
}
public static void setFileLogging(boolean enable) {
fileLogging = enable;
}
public static void v(String format, Object... args) {
if (level.getValue() > Level.V.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.v(tag, msg);
if (fileLogging) {
flog(Level.V, msg);
}
}
public static void d(String format, Object... args) {
if (level.getValue() > Level.D.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.d(tag, msg);
if (fileLogging) {
flog(Level.D, msg);
}
}
public static void i(String format, Object... args) {
if (level.getValue() > Level.I.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.i(tag, msg);
if (fileLogging) {
flog(Level.I, msg);
}
}
public static void w(String format, Object... args) {
if (level.getValue() > Level.W.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.w(tag, msg);
if (fileLogging) {
flog(Level.W, msg);
}
}
public static void w(String format, Throwable t, Object... args) {
if (level.getValue() > Level.W.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.w(msg, t);
if (fileLogging) {
flog(Level.W, msg, t);
}
}
public static void e(String format, Object... args) {
if (level.getValue() > Level.E.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.e(tag, msg);
if (fileLogging) {
flog(Level.E, msg);
}
}
public static void e(String format, Throwable t, Object... args) {
if (level.getValue() > Level.E.getValue()) {
return;
}
String msg = getMessage(format, args);
Log.e(tag, msg, t);
if (fileLogging) {
flog(Level.E, msg, t);
}
}
public static void trace() {
try {
throw new Throwable("dumping stack trace ...");
} catch (Throwable t) {
ALog.e("trace:", t);
}
}
public static String getStackTraceString(Throwable tr) {
if (tr == null) {
return "";
}
Throwable t = tr;
while (t != null) {
if (t instanceof UnknownHostException) {
return "";
}
t = t.getCause();
}
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
tr.printStackTrace(pw);
return sw.toString();
}
private static void flog(Level l, String msg) {
flog(l, msg, null);
}
private static void flog(Level l, String msg, Throwable t) {
String timeString = FLOG_FORMAT.format(new Date());
String line = timeString + " " + l.toString() + "/" + tag + ": " + msg
+ "\n";
if (t != null) {
line += getStackTraceString(t) + "\n";
}
logQueue.offer(line);
}
}
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