public class TestArgumentSyntax2 {
    
    
//    failed|=!checkArgumentSyntax("theName",null,"\"<&",false,false,1,-1,"Error consistencyCheck: name in component definition");
//    failed|=!checkArgumentSyntax(null,null,"\"<&",false,false,1,-1,"Error consistencyCheck: name in component definition");
//    failed|=!checkArgumentSyntax("42","0123456789.",null,false,false,1,-1,"Error consistencyCheck: counter in component definition");
    static boolean checkArgumentSyntax(String value, String allowedchars, String notallowedchars, String logmsg) {
            String rc=null;

            int maxchar=99999;
            int minchar=1;
            if ((allowedchars!=null && notallowedchars!=null) || minchar>maxchar) {
                rc="internal error";
            }
            else {
                if (value==null ) {
                    rc="the value null is not allowed, it is missing"; 
                }
                else if (value!=null && minchar>0 && value.trim().equals("")) {
                    rc="the value must not be empty";
                }
                else if (value!=null) {
                    if (value.length()<minchar || value.length()>maxchar) {
                        if (rc==null) {
                            rc="the value length must be between +minchar+ and +maxchar";
                        }
                    }
                    char[] _value=value.toCharArray();
                    boolean dotfound=false;
                    int i=1; 
                    //for (int i=0; i<_value.length; ++i) {
                    if (_value[i]=='.' && !dotfound) {
                        dotfound=true;    
                    }
                    else if (allowedchars!=null && allowedchars.indexOf(_value[i])==-1) {
                        if (rc==null) {
                            rc="the value contains an illegal character: '"+_value[i]+"', only following characters are allowed: '+allowedchars+'";
                        }
                        else {
                            rc+=" / the value contains an illegal character: '"+_value[i]+"', only following characters are allowed: '+allowedchars+'";
                        }
                        //      break;
                    }
                    else if (notallowedchars!=null && notallowedchars.indexOf(_value[i])!=-1) {
                        if (rc==null) {
                            rc="the value contains an illegal character: '"+_value[i]+"', following characters are not allowed '+notallowedchars+'";
                        }
                        else {
                            rc+=" / the value contains an illegal character: '"+_value[i]+"', following characters are not allowed '+notallowedchars+'";
                        }
                        //    break;
                    }
                }
            }

            if (rc!=null) {
                System.out.println(logmsg+" ==> "+rc);
                return false;
            }
            return true;
    }


    public static void main(String[] args) {
        // checkArgumentSyntax(String value, String allowedchars, String notallowedchars, boolean nullallowed, boolean maxonedot, int minchar, int maxchar, String logmsg)
        boolean failed = true;
for (int i=0; i<5000000; i++){
    failed|=!checkArgumentSyntax("theName",null,"\"<&","Error consistencyCheck: name in component definition");
    failed|=!checkArgumentSyntax(null,null,"\"<&","Error consistencyCheck: name in component definition");
    failed|=!checkArgumentSyntax("42","0123456789.",null,"Error consistencyCheck: counter in component definition");

}
System.out.println("test failed" + failed);

    }

}