private static String format()

in src/main/java/org/apache/log4j/LogSF.java [51:81]

• 31 lines of code
• 9 McCabe index (conditional complexity)

    private static String format(final String pattern,
                                 final Object[] arguments) {
        if (pattern != null) {
            String retval = "";
            int count = 0;
            int prev = 0;
            int pos = pattern.indexOf("{");
            while(pos >= 0) {
                if (pos == 0 || pattern.charAt(pos-1) != '\\') {
                    retval += pattern.substring(prev, pos);
                    if (pos + 1 < pattern.length() && pattern.charAt(pos+1) == '}') {
                        if(arguments != null && count < arguments.length) {
                            retval += arguments[count++];
                        } else {
                            retval += "{}";
                        }
                        prev = pos + 2;
                    } else {
                        retval += "{";
                        prev = pos + 1;
                    }
                } else {
                    retval += pattern.substring(prev, pos - 1) + "{";
                    prev = pos + 1;
                }
                pos = pattern.indexOf("{", prev);
            }
            return retval + pattern.substring(prev);
        }
        return null;
    }