TeeJee.Logging.vala

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/*
 * TeeJee.Logging.vala
 *
 * Copyright 2012-2018 Tony George <teejeetech@gmail.com>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 *
 *
 */
 
namespace TeeJee.Logging{
 
    /* Functions for logging messages to console and log files */
 
    using TeeJee.Misc;
 
    public DataOutputStream dos_log;
    public string err_log;
    public bool LOG_ENABLE = true;
    public bool LOG_TIMESTAMP = false;
    public bool LOG_COLORS = true;
    public bool LOG_DEBUG = false;
    public bool LOG_COMMANDS = false;
 
    public void log_msg (string message, bool highlight = false){
 
        if (!LOG_ENABLE) { return; }
 
        string msg = "";
 
        if (highlight && LOG_COLORS){
            msg += "\033[1;38;5;34m";
        }
 
        if (LOG_TIMESTAMP){
            msg += "[" + timestamp(true) +  "] ";
        }
 
        msg += message;
 
        if (highlight && LOG_COLORS){
            msg += "\033[0m";
        }
 
        msg += "\n";
 
        stdout.printf (msg);
        stdout.flush();
 
        try {
            if (dos_log != null){
                dos_log.put_string ("[%s] %s\n".printf(timestamp(), message));
            }
        }
        catch (Error e) {
            stdout.printf (e.message);
        }
    }
 
    public void log_error (string message, bool highlight = false,
        bool is_warning = false){
            
        if (!LOG_ENABLE) { return; }
 
        string msg = "";
 
        if (highlight && LOG_COLORS){
            msg += "\033[1;38;5;160m";
        }
 
        if (LOG_TIMESTAMP){
            msg += "[" + timestamp(true) +  "] ";
        }
 
        string prefix = (is_warning) ? "W" : "E";
 
        msg += prefix + ": " + message;
 
        if (highlight && LOG_COLORS){
            msg += "\033[0m";
        }
 
        msg += "\n";
 
        stdout.printf (msg);
        stdout.flush();
        
        try {
            string str = "[%s] %s: %s\n".printf(timestamp(), prefix, message);
            
            if (dos_log != null){
                dos_log.put_string (str);
            }
 
            if (err_log != null){
                err_log += "%s\n".printf(message);
            }
        }
        catch (Error e) {
            stdout.printf (e.message);
        }
    }
 
    public void log_debug (string message){
        if (!LOG_ENABLE) { return; }
 
        if (LOG_DEBUG){
            log_msg ("D: " + message);
        }
 
        try {
            if (dos_log != null){
                dos_log.put_string ("[%s] %s\n".printf(timestamp(), message));
            }
        }
        catch (Error e) {
            stdout.printf (e.message);
        }
    }
 
    public void log_to_file (string message, bool highlight = false){
        try {
            if (dos_log != null){
                dos_log.put_string ("[%s] %s\n".printf(timestamp(), message));
            }
        }
        catch (Error e) {
            stdout.printf (e.message);
        }
    }
}