Imported Upstream version 0.2+gitdfdad95upstream/0.2+gitdfdad95

1 files changed, 194 insertions, 0 deletions

diff --git a/src/utilities/logger.vala b/src/utilities/logger.vala
new file mode 100644
index 0000000..3108ba3
--- /dev/null
+++ b/src/utilities/logger.vala
@@ -0,0 +1,194 @@
+/* 
+Copyright (c) 2011 by Simon Schneegans
+
+This program is free software: you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation, either version 3 of the License, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+namespace GnomePie {
+
+/////////////////////////////////////////////////////////////////////////    
+/// A static class which beautifies the messages of the default logger.
+/// Some of this code is inspired by plank's written by Robert Dyer. 
+/// Thanks a lot for this project! 
+/////////////////////////////////////////////////////////////////////////
+
+public class Logger {
+
+    /////////////////////////////////////////////////////////////////////
+    /// If these are set to false, the according messages are not shown
+    /////////////////////////////////////////////////////////////////////
+    
+    public static bool display_info { get; set; default = true; }
+    public static bool display_debug { get; set; default = true; }
+    public static bool display_warning { get; set; default = true; }
+    public static bool display_error { get; set; default = true; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// If true, a time stamp is shown in each message.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static bool display_time { get; set; default = true; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// If true, the origin of the message is shown. In form file:line
+    /////////////////////////////////////////////////////////////////////
+    
+    public static bool display_file { get; set; default = false; }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// A regex, used to format the standard message.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static Regex regex = null;
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Possible terminal colors.
+    /////////////////////////////////////////////////////////////////////
+    
+    private enum Color {
+        BLACK,
+        RED,
+        GREEN,
+        YELLOW,
+        BLUE,
+        PURPLE,
+        TURQUOISE,
+        WHITE
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Creates the regex and binds the handler.
+    /////////////////////////////////////////////////////////////////////
+    
+    public static void init() {
+        try {
+			regex = new Regex("""(.*)\.vala(:\d+): (.*)""");
+		} catch {}
+		
+        GLib.Log.set_default_handler(log_func);
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Displays an Info message.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static void info(string message) {
+        if (display_info) {
+            stdout.printf(set_color(Color.GREEN, false) + "[" + get_time() + "MESSAGE]" + message);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Displays a Debug message.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static void debug(string message) {
+        if (display_debug) {
+            stdout.printf(set_color(Color.BLUE, false) + "[" + get_time() + " DEBUG ]" + message);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Displays a Warning message.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static void warning(string message) {
+        if (display_warning) {
+            stdout.printf(set_color(Color.YELLOW, false) + "[" + get_time() + "WARNING]" + message);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Displays a Error message.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static void error(string message) {
+        if (display_error) {
+            stdout.printf(set_color(Color.RED, false) + "[" + get_time() + " ERROR ]" + message);
+        }
+    }
+    
+    /////////////////////////////////////////////////////////////////////
+    /// Helper method which resets the terminal color.
+    /////////////////////////////////////////////////////////////////////
+    
+    private static string reset_color() {
+		return "\x001b[0m";
+	}
+	
+	/////////////////////////////////////////////////////////////////////
+	/// Helper method which sets the terminal color.
+	/////////////////////////////////////////////////////////////////////
+	
+	private static string set_color(Color color, bool bold) {
+	    if (bold) return "\x001b[1;%dm".printf((int)color + 30);
+	    else      return "\x001b[0;%dm".printf((int)color + 30);
+	}
+	
+	/////////////////////////////////////////////////////////////////////
+	/// Returns the current time in hh:mm:ss:mmmmmm
+	/////////////////////////////////////////////////////////////////////
+	
+	private static string get_time() {
+	    if (display_time) {  
+            var now = new DateTime.now_local ();
+		    return "%.2d:%.2d:%.2d:%.6d ".printf (now.get_hour (), now.get_minute (), now.get_second (), now.get_microsecond ());
+		} else {
+		    return "";
+		}
+	}
+	
+	/////////////////////////////////////////////////////////////////////
+    /// Helper method to format the message.
+    /////////////////////////////////////////////////////////////////////
+	
+	private static string create_message(string message) {
+	    if (display_file && regex != null && regex.match(message)) {
+			var parts = regex.split(message);
+			return " [%s%s]%s %s\n".printf(parts[1], parts[2], reset_color(), parts[3]);
+		} else if (regex != null && regex.match(message)) {
+		    var parts = regex.split(message);
+			return "%s %s\n".printf(reset_color(), parts[3]);
+		} else {
+		    return reset_color() + " " + message + "\n";
+		}
+	}
+	
+	/////////////////////////////////////////////////////////////////////
+	/// The handler function.
+	/////////////////////////////////////////////////////////////////////
+	
+	private static void log_func(string? d, LogLevelFlags flags, string message) {
+			
+		switch (flags) {
+		    case LogLevelFlags.LEVEL_ERROR:
+		    case LogLevelFlags.LEVEL_CRITICAL:
+			    error(create_message(message));
+			    break;
+		    case LogLevelFlags.LEVEL_INFO:
+		    case LogLevelFlags.LEVEL_MESSAGE:
+			    info(create_message(message));
+			    break;
+		    case LogLevelFlags.LEVEL_DEBUG:
+			    debug(create_message(message));
+			    break;
+		    case LogLevelFlags.LEVEL_WARNING:
+		    default:
+			    warning(create_message(message));
+			    break;
+		}
+	}
+}
+
+}