Merge branch 'feature/JAL-3187linkedFeatures' into feature/JAL-3251biotypedMappings

[jalview.git] / getdown / src / getdown / core / src / main / java / com / threerings / getdown / Log.java

diff --git a/getdown/src/getdown/core/src/main/java/com/threerings/getdown/Log.java b/getdown/src/getdown/core/src/main/java/com/threerings/getdown/Log.java
new file mode 100644 (file)
index 0000000..13b9956
--- /dev/null
+++ b/getdown/src/getdown/core/src/main/java/com/threerings/getdown/Log.java
@@ -0,0 +1,141 @@
+//
+// Getdown - application installer, patcher and launcher
+// Copyright (C) 2004-2018 Getdown authors
+// https://github.com/threerings/getdown/blob/master/LICENSE
+
+package com.threerings.getdown;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.text.FieldPosition;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.logging.*;
+
+/**
+ * A placeholder class that contains a reference to the log object used by the Getdown code.
+ */
+public class Log
+{
+    public static class Shim {
+        /**
+         * Logs a debug message.
+         *
+         * @param message the message to be logged.
+         * @param args a list of key/value pairs and an optional final Throwable.
+         */
+        public void debug (Object message, Object... args) { doLog(0, message, args); }
+
+        /**
+         * Logs an info message.
+         *
+         * @param message the message to be logged.
+         * @param args a list of key/value pairs and an optional final Throwable.
+         */
+        public void info (Object message, Object... args) { doLog(1, message, args); }
+
+        /**
+         * Logs a warning message.
+         *
+         * @param message the message to be logged.
+         * @param args a list of key/value pairs and an optional final Throwable.
+         */
+        public void warning (Object message, Object... args) { doLog(2, message, args); }
+
+        /**
+         * Logs an error message.
+         *
+         * @param message the message to be logged.
+         * @param args a list of key/value pairs and an optional final Throwable.
+         */
+        public void error (Object message, Object... args) { doLog(3, message, args); }
+
+        protected void doLog (int levIdx, Object message, Object[] args) {
+            if (_impl.isLoggable(LEVELS[levIdx])) {
+                Throwable err = null;
+                int nn = args.length;
+                if (message instanceof Throwable) {
+                    err = (Throwable)message;
+                } else if (nn % 2 == 1 && (args[nn - 1] instanceof Throwable)) {
+                    err = (Throwable)args[--nn];
+                }
+                _impl.log(LEVELS[levIdx], format(message, args), err);
+            }
+        }
+
+        protected final Logger _impl = Logger.getLogger("com.threerings.getdown");
+    }
+
+    /** We dispatch our log messages through this logging shim. */
+    public static final Shim log = new Shim();
+
+    public static String format (Object message, Object... args) {
+        if (args.length < 2) return String.valueOf(message);
+        StringBuilder buf = new StringBuilder(String.valueOf(message));
+        if (buf.length() > 0) {
+            buf.append(' ');
+        }
+        buf.append('[');
+        for (int ii = 0; ii < args.length; ii += 2) {
+            if (ii > 0) {
+                buf.append(',').append(' ');
+            }
+            buf.append(args[ii]).append('=');
+            try {
+                buf.append(args[ii+1]);
+            } catch (Throwable t) {
+                buf.append("<toString() failure: ").append(t).append(">");
+            }
+        }
+        return buf.append(']').toString();
+    }
+
+    static {
+        Formatter formatter = new OneLineFormatter();
+        Logger logger = LogManager.getLogManager().getLogger("");
+        for (Handler handler : logger.getHandlers()) {
+            handler.setFormatter(formatter);
+        }
+    }
+
+    protected static class OneLineFormatter extends Formatter {
+        @Override public String format (LogRecord record) {
+            StringBuffer buf = new StringBuffer();
+
+            // append the timestamp
+            _date.setTime(record.getMillis());
+            _format.format(_date, buf, _fpos);
+
+            // append the log level
+            buf.append(" ");
+            buf.append(record.getLevel().getLocalizedName());
+            buf.append(" ");
+
+            // append the message itself
+            buf.append(formatMessage(record));
+            buf.append(System.lineSeparator());
+
+            // if an exception was also provided, append that
+            if (record.getThrown() != null) {
+                try {
+                    StringWriter sw = new StringWriter();
+                    PrintWriter pw = new PrintWriter(sw);
+                    record.getThrown().printStackTrace(pw);
+                    pw.close();
+                    buf.append(sw.toString());
+                } catch (Exception ex) {
+                    buf.append("Format failure:").append(ex);
+                }
+            }
+
+            return buf.toString();
+        }
+
+        protected Date _date = new Date();
+        protected SimpleDateFormat _format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss:SSS");
+        protected FieldPosition _fpos = new FieldPosition(SimpleDateFormat.DATE_FIELD);
+    }
+
+    protected static final String DATE_FORMAT = "{0,date} {0,time}";
+    protected static final Level[] LEVELS = {Level.FINE, Level.INFO, Level.WARNING, Level.SEVERE};
+}