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// Log.cs
//
// GNOME Do is the legal property of its developers. Please refer to the
// COPYRIGHT file distributed with this source distribution.
//
// 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/>.
//
using System;
using System.Linq;
using System.Threading;
using System.Collections.Generic;
using Do.Universe;
namespace Do.Platform
{
public enum LogLevel {
Debug,
Info,
Warn,
Error,
Fatal,
}
public abstract class LogBase
{
class LogCall
{
public readonly LogLevel Level;
public readonly string Message;
public LogCall (LogLevel level, string message)
{
Level = level;
Message = message;
}
}
static object write_lock = new object ();
static bool writing = false;
public static LogLevel DisplayLevel { get; set; }
public static void Write (LogLevel level, string msg, params object[] args)
{
if (level < DisplayLevel)
return;
lock (write_lock) {
msg = string.Format (msg, args);
if (writing) {
throw new InvalidOperationException (String.Format ("Logger implementation attempted to call Log from its own Log method.\n" +
"Message was:\n" +
"***************************\n" +
"{0}\n" +
"***************************", msg));
}
writing = true;
try {
// Log message.
foreach (ILogService log in Services.Logs)
log.Log (level, msg);
} finally {
writing = false;
}
}
}
}
}
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