public static boolean isValid()

in ldap/model/src/main/java/org/apache/directory/api/ldap/model/csn/Csn.java [298:517]

• 170 lines of code
• 65 McCabe index (conditional complexity)

    public static boolean isValid( String value )
    {
        if ( Strings.isEmpty( value ) )
        {
            return false;
        }

        char[] chars = value.toCharArray();
        
        if ( chars.length != 40 )
        {
            return false;
        }

        // Get the Timestamp
        // Check the timestamp's year
        for ( int pos = 0; pos < 4; pos++ )
        {
            if ( !Chars.isDigit( chars[pos] ) )
            {
                return false;
            }
        }
        
        // Check the timestamp month
        switch ( chars[4] )
        {
            case '0' :
                if ( !Chars.isDigit( chars[5] ) )
                {
                    return false;
                }
                
                if ( chars[5] == '0' )
                {
                    return false;
                }
                
                break;
                
            case '1' :
                if ( ( chars[5] != '0' ) && ( chars[5] != '1' ) && ( chars[5] != '2' ) )
                {
                    return false;
                }
                
                break;
                
            default :
                return false;
        }

        // Check the timestamp day
        switch ( chars[6] )
        {
            case '0' :
                if ( !Chars.isDigit( chars[7] ) )
                {
                    return false;
                }
                
                if ( chars[7] == '0' )
                {
                    return false;
                }
                
                break;
                
            case '1' :
            case '2' : // Special case for february...
                if ( !Chars.isDigit( chars[7] ) )
                {
                    return false;
                }
                
                break;
                
            case '3' :
                // Deal with 30 days months
                if ( ( chars[7] != '0' ) && ( chars[7] != '1' ) )
                {
                    return false;
                }
                
                break;
                
            default :
                return false;
        }

        // Check the timestamp hour
        switch ( chars[8] )
        {
            case '0' :
            case '1' :
                if ( !Chars.isDigit( chars[9] ) )
                {
                    return false;
                }

                break;
                
            case '2' :
                if ( ( chars[9] != '0' ) && ( chars[9] != '1' ) && ( chars[9] != '2' ) && ( chars[9] != '3' ) )
                {
                    return false;
                }
                
                break;
                
            default :
                return false;
        }

        // Check the timestamp minute
        switch ( chars[10] )
        {
            case '0' :
            case '1' :
            case '2' :
            case '3' :
            case '4' :
            case '5' :
                break;
                
            default :
                return false;
        }
        
        if ( !Chars.isDigit( chars[11] ) )
        {
            return false;
        }
        
        // Check the timestamp seconds
        switch ( chars[12] )
        {
            case '0' :
            case '1' :
            case '2' :
            case '3' :
            case '4' :
            case '5' :
                break;
                
            default :
                return false;
        }
        
        if ( !Chars.isDigit( chars[13] ) )
        {
            return false;
        }

        // Check the milliseconds
        if ( chars[14] != '.' )
        {
            return false;
        }

        for ( int i = 0; i < 6; i++ )
        {
            if ( !Chars.isDigit( chars[15 + i] ) )
            {
                return false;
            }
        }

        if ( chars[21] != 'Z' )
        {
            return false;
        }

        if ( chars[22] != '#' )
        {
            return false;
        }

        // Get the changeCount. It should be an 6 digit hex number
        if ( !Chars.isHex( ( byte ) chars[23] )
            || !Chars.isHex( ( byte ) chars[24] )
            || !Chars.isHex( ( byte ) chars[25] )
            || !Chars.isHex( ( byte ) chars[26] )
            || !Chars.isHex( ( byte ) chars[27] )
            || !Chars.isHex( ( byte ) chars[28] ) )
        {
            return false;
        }

        if ( chars[29] != '#' )
        {
            return false;
        }
        
        // Get the replicaID, which should be a 3 digits hex number
        if ( !Chars.isHex( ( byte ) chars[30] )
            || !Chars.isHex( ( byte ) chars[31] )
            || !Chars.isHex( ( byte ) chars[32] ) )
        {
            return false;
        }

        if ( chars[33] != '#' )
        {
            return false;
        }

        // Check the modification number, which should be a 6 digits hex number
        if ( !Chars.isHex( ( byte ) chars[34] )
            || !Chars.isHex( ( byte ) chars[35] )
            || !Chars.isHex( ( byte ) chars[36] )
            || !Chars.isHex( ( byte ) chars[37] )
            || !Chars.isHex( ( byte ) chars[38] )
            || !Chars.isHex( ( byte ) chars[39] ) )
        {
            return false;
        }

        return true;
    }