Function read_and_write_for_join

src/burp/split/spit.cpp:1012–1129

static int read_and_write_for_join(FILE_DESC output_fl_desc,
								const TEXT* file_name,
								UCHAR* io_buffer,
								SLONG cnt,
								SLONG* total_int)
{
/********************************************************************
**
**	r e a d _ a n d _ w r i t e _ f o r _ j o i n
**
*********************************************************************
**
**	Functional description:
**
**		Reads data from backup files and writes to standard
**		output file.
**
*********************************************************************
*/

	TEXT num_arr[5], total_arr[5];
	header_rec hdr_rec;
	FB_UNUSED_VAR(hdr_rec); // Silence compiler warning

	FILE_DESC input_fl_desc = open_platf(file_name, mode_read);

	if (input_fl_desc == INVALID_HANDLE_VALUE)
	{
		fprintf(stderr, "can not open input file %s\n", file_name);
		return FB_FAILURE;
	}

	int read_cnt = read_platf(input_fl_desc, io_buffer, header_rec_len);
	if (read_cnt != static_cast<int>(header_rec_len))
	{
		close_platf(input_fl_desc);
		fprintf(stderr, "progam fails to read gsplit header record in back-up file%s\n", file_name);
		return FB_FAILURE;
	}

	const TEXT* char_ptr1 = reinterpret_cast<char*>(io_buffer);
	SLONG ret_cd = strncmp(char_ptr1, header_rec_name, sizeof(hdr_rec.name) - 1);
	if (ret_cd != 0)
	{
		close_platf(input_fl_desc);
		fprintf(stderr, "gsplit: expected GSPLIT description record\n");
		fprintf(stderr, "gsplit: Exiting before completion due to errors\n");
		return FB_FAILURE;
	}

	const SLONG skip_to_num = sizeof(hdr_rec.name) + sizeof(hdr_rec.date_time) + sizeof(hdr_rec.text1);
	const SLONG skip_to_total = skip_to_num + sizeof(hdr_rec.num) + sizeof(hdr_rec.text2);

	char_ptr1 = reinterpret_cast<char*>(io_buffer + skip_to_num);
	const TEXT* char_ptr2 = reinterpret_cast<char*>(io_buffer + skip_to_total);
	size_t indx;
	for (indx = 0; indx < sizeof(hdr_rec.num); indx++)
	{