Added customizable command log format (Date+Time are now available)

Added the option format to config files (config.yml + worldedit.properties). By default, current date and time are displayed.
The formatting function is implemented by analogy with the class java.util.logging.SimpleFormatter

worldedit-bukkit/src/main/resources/defaults/config.yml

@@ -40,6 +40,17 @@ use-inventory:
 logging:
     log-commands: false
     file: worldedit.log
+    # The format of custom log message. This is java general format string (java.util.Formatter). Arguments are:
+    #   1$ : date - a Date object representing event time of the log record.
+    #   2$ : source - a string representing the caller, if available; otherwise, the logger's name.
+    #   3$ : logger - the logger's name.
+    #   4$ : level - the log level.
+    #   5$ : message - the formatted log message returned from the Formatter.formatMessage(LogRecord) method. It uses java.text formatting and does not use the java.util.Formatter format argument.
+    #   6$ : thrown - a string representing the throwable associated with the log record and its backtrace beginning with a newline character, if any; otherwise, an empty string.
+    # For details see:
+    #   https://docs.oracle.com/javase/8/docs/api/java/util/Formatter.html
+    #   https://docs.oracle.com/javase/8/docs/api/java/util/logging/SimpleFormatter.html#format-java.util.logging.LogRecord-
+    format: "[%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS %4$s]: %5$s%6$s%n"
 
 super-pickaxe:
     drop-items: true

worldedit-core/src/main/java/com/sk89q/worldedit/LocalConfiguration.java

@@ -21,6 +21,7 @@ package com.sk89q.worldedit;
 
 import com.sk89q.worldedit.blocks.BlockID;
 import com.sk89q.worldedit.blocks.ItemID;
+import com.sk89q.worldedit.util.logging.LogFormat;
 import com.sk89q.worldedit.world.snapshot.SnapshotRepository;
 
 import java.io.File;
@@ -92,6 +93,7 @@ public abstract class LocalConfiguration {
     public int maxBrushRadius = 6;
     public boolean logCommands = false;
     public String logFile = "";
+    public String logFormat = LogFormat.DEFAULT_FORMAT;
     public boolean registerHelp = true; // what is the point of this, it's not even used
     public int wandItem = ItemID.WOOD_AXE;
     public boolean superPickaxeDrop = true;

worldedit-core/src/main/java/com/sk89q/worldedit/extension/platform/CommandManager.java

@@ -96,7 +96,6 @@ public final class CommandManager {
 
         // Setup the logger
         commandLog.addHandler(dynamicHandler);
-        dynamicHandler.setFormatter(new LogFormat());
 
         // Set up the commands manager
         ParametricBuilder builder = new ParametricBuilder();
@@ -185,6 +184,8 @@ public final class CommandManager {
             } catch (IOException e) {
                 log.log(Level.WARNING, "Could not use command log file " + path + ": " + e.getMessage());
             }
+
+            dynamicHandler.setFormatter(new LogFormat(config.logFormat));
         }
 
         platform.registerCommands(dispatcher);

worldedit-core/src/main/java/com/sk89q/worldedit/util/PropertiesConfiguration.java

@@ -95,6 +95,7 @@ public class PropertiesConfiguration extends LocalConfiguration {
         maxBrushRadius = getInt("max-brush-radius", maxBrushRadius);
         logCommands = getBool("log-commands", logCommands);
         logFile = getString("log-file", logFile);
+        logFormat = getString("log-format", logFormat);
         registerHelp = getBool("register-help", registerHelp);
         wandItem = getInt("wand-item", wandItem);
         superPickaxeDrop = getBool("super-pickaxe-drop-items", superPickaxeDrop);

worldedit-core/src/main/java/com/sk89q/worldedit/util/YAMLConfiguration.java

@@ -82,6 +82,7 @@ public class YAMLConfiguration extends LocalConfiguration {
         registerHelp = config.getBoolean("register-help", true);
         logCommands = config.getBoolean("logging.log-commands", logCommands);
         logFile = config.getString("logging.file", logFile);
+        logFormat = config.getString("logging.format", logFormat);
 
         superPickaxeDrop = config.getBoolean("super-pickaxe.drop-items",
                 superPickaxeDrop);

worldedit-core/src/main/java/com/sk89q/worldedit/util/logging/LogFormat.java

@@ -19,6 +19,7 @@
 
 package com.sk89q.worldedit.util.logging;
 
+import java.util.Date;
 import java.util.logging.Formatter;
 import java.util.logging.LogRecord;
 import java.util.logging.Level;
@@ -29,35 +30,56 @@ import java.io.StringWriter;
  * A standard logging format for WorldEdit.
  */
 public class LogFormat extends Formatter {
+    public static final String DEFAULT_FORMAT = "[%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS %4$s]: %5$s%6$s%n";
+    private final Date dat = new Date();
+    private final String format;
+
+    public LogFormat() {
+        this(null);
+    }
+
+    public LogFormat(String format) {
+        System.out.println(format);
+        if (format == null || format.isEmpty()) {
+            format = DEFAULT_FORMAT;
+        }
+        try {
+            //noinspection ResultOfMethodCallIgnored
+            String.format(format, new Date(), "", "", "", "", "");
+        } catch (IllegalArgumentException var3) {
+            format = DEFAULT_FORMAT;
+        }
+        this.format = format;
+    }
+
     @Override
     public String format(LogRecord record) {
-        StringBuilder text = new StringBuilder();
-        Level level = record.getLevel();
-
-        if (level == Level.FINEST) {
-            text.append("[FINEST] ");
-        } else if (level == Level.FINER) {
-            text.append("[FINER] ");
-        } else if (level == Level.FINE) {
-            text.append("[FINE] ");
-        } else if (level == Level.INFO) {
-            text.append("[INFO] ");
-        } else if (level == Level.WARNING) {
-            text.append("[WARNING] ");
-        } else if (level == Level.SEVERE) {
-            text.append("[SEVERE] ");
+        dat.setTime(record.getMillis());
+        String source;
+        if (record.getSourceClassName() != null) {
+            source = record.getSourceClassName();
+            if (record.getSourceMethodName() != null) {
+                source += " " + record.getSourceMethodName();
             }
-
-        text.append(record.getMessage());
-        text.append("\r\n");
-
-        Throwable t = record.getThrown();
-        if (t != null) {
-            StringWriter writer = new StringWriter();
-            t.printStackTrace(new PrintWriter(writer));
-            text.append(writer);
+        } else {
+            source = record.getLoggerName();
         }
-
-        return text.toString();
+        String message = formatMessage(record);
+        String throwable = "";
+        if (record.getThrown() != null) {
+            StringWriter sw = new StringWriter();
+            PrintWriter pw = new PrintWriter(sw);
+            pw.println();
+            record.getThrown().printStackTrace(pw);
+            pw.close();
+            throwable = sw.toString();
+        }
+        return String.format(format,
+                dat,
+                source,
+                record.getLoggerName(),
+                record.getLevel().getName(),
+                message,
+                throwable);
     }
 }

worldedit-forge/src/main/resources/defaults/worldedit.properties

@@ -18,6 +18,7 @@ scripting-timeout=3000
 snapshots-dir=
 use-inventory-creative-override=false
 log-file=worldedit.log
+log-format=[%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS %4$s]: %5$s%6$s%n
 max-changed-blocks=-1
 nav-wand-distance=50
 butcher-default-radius=-1

worldedit-sponge/src/main/java/com/sk89q/worldedit/sponge/config/ConfigurateConfiguration.java

@@ -86,6 +86,7 @@ public class ConfigurateConfiguration extends LocalConfiguration {
         registerHelp = node.getNode("register-help").getBoolean(true);
         logCommands = node.getNode("logging", "log-commands").getBoolean(logCommands);
         logFile = node.getNode("logging", "file").getString(logFile);
+        logFormat = node.getNode("logging", "format").getString(logFormat);
 
         superPickaxeDrop = node.getNode("super-pickaxe", "drop-items").getBoolean(superPickaxeDrop);
         superPickaxeManyDrop = node.getNode("super-pickaxe", "many-drop-items").getBoolean(superPickaxeManyDrop);