Function final_read_and_write

src/burp/split/spit.cpp:897–953

static int final_read_and_write(FILE_DESC input_file_desc,
								FILE_DESC output_fl_desc,
								const TEXT* file_name,
								SLONG io_size,
								UCHAR** io_buffer,
								bool* end_of_input)
{

/********************************************************************
**
**	f i n a l _ r e a d _ a n d _ w r i t e
**
*********************************************************************
**
**	Functional description:
**
**		Read all data from input file and write the data out to output
**		file.
**
*********************************************************************
*/

	const SLONG read_cnt = read_platf(input_file_desc, *io_buffer, io_size);

	switch (read_cnt)
	{
	case 0:					// no more data to be read
		close_platf(output_fl_desc);
		*end_of_input = true;
		return FB_SUCCESS;

	case -1:					// read failed
		close_platf(output_fl_desc);
		fprintf(stderr, "problem when reading input file, errno = %d\n", errno);
		return FB_FAILURE;

	default:					// read ok
		break;
	}

	const SLONG write_cnt = write_platf(output_fl_desc, *io_buffer, read_cnt);

	switch (write_cnt)
	{
	case -1:					// write failed
		close_platf(output_fl_desc);
		return FB_FAILURE;

	default:
		if (write_cnt == read_cnt)	// write ok
			return FB_SUCCESS;

		fprintf(stderr, "There is no enough space to write to back up file %s\n", file_name);
		close_platf(output_fl_desc);
		return FB_FAILURE;
	}
}