diff --git a/server/src/main/java/com/genymobile/scrcpy/Ln.java b/server/src/main/java/com/genymobile/scrcpy/Ln.java index 199c29be..cdd57b9f 100644 --- a/server/src/main/java/com/genymobile/scrcpy/Ln.java +++ b/server/src/main/java/com/genymobile/scrcpy/Ln.java @@ -2,6 +2,11 @@ package com.genymobile.scrcpy; import android.util.Log; +import java.io.FileDescriptor; +import java.io.FileOutputStream; +import java.io.OutputStream; +import java.io.PrintStream; + /** * Log both to Android logger (so that logs are visible in "adb logcat") and standard output/error (so that they are visible in the terminal * directly). @@ -11,6 +16,9 @@ public final class Ln { private static final String TAG = "scrcpy"; private static final String PREFIX = "[server] "; + private static final PrintStream CONSOLE_OUT = new PrintStream(new FileOutputStream(FileDescriptor.out)); + private static final PrintStream CONSOLE_ERR = new PrintStream(new FileOutputStream(FileDescriptor.err)); + enum Level { VERBOSE, DEBUG, INFO, WARN, ERROR } @@ -21,6 +29,12 @@ public final class Ln { // not instantiable } + public static void disableSystemStreams() { + PrintStream nullStream = new PrintStream(new NullOutputStream()); + System.setOut(nullStream); + System.setErr(nullStream); + } + /** * Initialize the log level. *
@@ -39,30 +53,30 @@ public final class Ln { public static void v(String message) { if (isEnabled(Level.VERBOSE)) { Log.v(TAG, message); - System.out.print(PREFIX + "VERBOSE: " + message + '\n'); + CONSOLE_OUT.print(PREFIX + "VERBOSE: " + message + '\n'); } } public static void d(String message) { if (isEnabled(Level.DEBUG)) { Log.d(TAG, message); - System.out.print(PREFIX + "DEBUG: " + message + '\n'); + CONSOLE_OUT.print(PREFIX + "DEBUG: " + message + '\n'); } } public static void i(String message) { if (isEnabled(Level.INFO)) { Log.i(TAG, message); - System.out.print(PREFIX + "INFO: " + message + '\n'); + CONSOLE_OUT.print(PREFIX + "INFO: " + message + '\n'); } } public static void w(String message, Throwable throwable) { if (isEnabled(Level.WARN)) { Log.w(TAG, message, throwable); - System.err.print(PREFIX + "WARN: " + message + '\n'); + CONSOLE_ERR.print(PREFIX + "WARN: " + message + '\n'); if (throwable != null) { - throwable.printStackTrace(); + throwable.printStackTrace(CONSOLE_ERR); } } } @@ -74,9 +88,9 @@ public final class Ln { public static void e(String message, Throwable throwable) { if (isEnabled(Level.ERROR)) { Log.e(TAG, message, throwable); - System.err.print(PREFIX + "ERROR: " + message + "\n"); + CONSOLE_ERR.print(PREFIX + "ERROR: " + message + '\n'); if (throwable != null) { - throwable.printStackTrace(); + throwable.printStackTrace(CONSOLE_ERR); } } } @@ -84,4 +98,21 @@ public final class Ln { public static void e(String message) { e(message, null); } + + static class NullOutputStream extends OutputStream { + @Override + public void write(byte[] b) { + // ignore + } + + @Override + public void write(byte[] b, int off, int len) { + // ignore + } + + @Override + public void write(int b) { + // ignore + } + } } diff --git a/server/src/main/java/com/genymobile/scrcpy/Server.java b/server/src/main/java/com/genymobile/scrcpy/Server.java index a8e8e36a..0126f396 100644 --- a/server/src/main/java/com/genymobile/scrcpy/Server.java +++ b/server/src/main/java/com/genymobile/scrcpy/Server.java @@ -187,7 +187,7 @@ public final class Server { try { internalMain(args); } catch (Throwable t) { - t.printStackTrace(); + Ln.e(t.getMessage(), t); status = 1; } finally { // By default, the Java process exits when all non-daemon threads are terminated. @@ -204,6 +204,7 @@ public final class Server { Options options = Options.parse(args); + Ln.disableSystemStreams(); Ln.initLogLevel(options.getLogLevel()); Ln.i("Device: [" + Build.MANUFACTURER + "] " + Build.BRAND + " " + Build.MODEL + " (Android " + Build.VERSION.RELEASE + ")");