check system preferences scheduled shutdown time and exit OF app just before

gistfile1.txt

//--------------------------------------------------------------
void ofApp::setup(){
    
    string path = "/Library/Preferences/SystemConfiguration/com.apple.AutoWake.plist";
    ofFile file;
    file.open(path); // open a file
    ofBuffer buffer = file.readToBuffer(); // read to a buffer
    
//    ofXml XML;
//    XML.loadFromBuffer( buffer.getText() ); // now get the buffer as a string and make XML
    
    string bufferString = buffer.getText();
    
    bool found_RepeatingPowerOff = false;
    bool got_powerOffTime = false;
    int shutDownMinutes = -1;
    
    if(buffer.size()) {
        
        //        for (ofBuffer::Line it = buffer.getLines().begin(), end = buffer.getLines().end(); it != end; ++it) {
        while(buffer.isLastLine() == false) {
            string line = buffer.getNextLine();
            
            // copy the line to draw later
            // make sure its not a empty line
            if(line.empty() == false) {
                
                if(ofIsStringInString(line,"<key>RepeatingPowerOff</key>")){
                    ofLog()<<"found_RepeatingPowerOff";
                    found_RepeatingPowerOff = true;
                }
                if(found_RepeatingPowerOff && ofIsStringInString(line, "integer")){
                    
                    ofStringReplace(line,"<integer>","");
                    ofStringReplace(line,"</integer>","");
                    
                    ofLog()<<"time in min "<<line;
                    shutDownMinutes = ofToInt(line);
                    got_powerOffTime = true;
                    break;
                }
            }
            
            // print out the line
            //            cout << line << endl;
            
            
        }
        
    }
    
    if(shutDownMinutes == -1){
        ofLog()<<"not shutdown time is set in "<<path;
    }else{
        ofLog()<<"shutDownTime "<<shutDownMinutes;
        
        int currentMinutes = ofGetHours()*60 + ofGetMinutes();
        ofLog()<<"currentMinutes "<<currentMinutes;
        
        ofLog()<<"until "<<currentMinutes - shutDownMinutes;
        
    }
    
    std::exit(1);
}