//
//      srecord - manipulate eprom load files
//      Copyright (C) 2001, 2005-2007 Peter Miller
//
//      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 3 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, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef INCLUDE_SREC_OUTPUT_FILE_FASTLOAD_H
#define INCLUDE_SREC_OUTPUT_FILE_FASTLOAD_H


#include <lib/srec/output/file.h>

/**
  * The srec_output_file_fastload class is used to write an LSI Logic
  * Fast Load formatted file.
  */
class srec_output_file_fastload:
    public srec_output_file
{
public:
    /**
      * The destructor.
      */
    virtual ~srec_output_file_fastload();

    /**
      * The default constructor.  The output will be written to the
      * standard output.
      */
    srec_output_file_fastload();

    /**
      * A constructor.  The output will be written to the named file (or
      * the standard output if the file name is "-").
      *
      * @param file_name
      *     The name of the file to be written.
      */
    srec_output_file_fastload(const std::string &file_name);

protected:
    // See base class for documentation.
    void write(const srec_record &);

    // See base class for documentation.
    void line_length_set(int);

    // See base class for documentation.
    void address_length_set(int);

    // See base class for documentation.
    int preferred_block_size_get() const;

    // See base class for documentation.
    const char *format_name() const;

private:
    /**
      * The line_length instance variable is used to remember the
      * preferred line length for the output.
      */
    int line_length;

    /**
      * The address instance variable is used to track the current
      * address location within the file.
      */
    unsigned long address;

    /**
      * The column instance variable is used to track the current output
      * column, to ensure that the lines don't exceed 80 characters.
      */
    int column;

    /**
      * The bytes_since_checksum instance variable is used to track how
      * many bytes have ben emitted since the last checksum was issued.
      * Don't leave it too long, or the checksum isn't any use.
      */
    int bytes_since_checksum;

    /**
      * The max_since_checksum instance variable is used to remember how
      * many bytes to cover between issuing checksums.  This is done in
      * such a way as to minimize line length.  There is no point going
      * over 256 bytes, because it's a simple 16-bit additive sum.
      */
    int max_since_checksum;

    /**
      * The prev_was_command instance variable is used to track that was
      * last output, bercase a newline must be thrown between commands
      * and data, but not at any other time.
      */
    bool prev_was_command;

    /**
      * The write_inner method is used to write a single line (record)
      * to the file.  Use by the write() method.
      */
    void write_inner(int type, unsigned long addr, int addr_len,
            const void *data, int data_len);

    /**
      * The put_number method is used to write the given value to the
      * output in base-64 (big endian) notation.
      */
    void put_number(unsigned long value, int ndigits);

    /**
      * The put_command method is used to write a command to the file,
      * including the leading '/' and the trailing newline.
      */
    void put_command(int c, unsigned long n, int ndigits);

    /**
      * The copy constructor.  Do not use.
      */
    srec_output_file_fastload(const srec_output_file_fastload &);

    /**
      * The assignment operator.  Do not use.
      */
    srec_output_file_fastload &operator=(const srec_output_file_fastload &);
};

#endif // INCLUDE_SREC_OUTPUT_FILE_FASTLOAD_H