Function tuple_to_stringinfo

contrib/test_decoding/test_decoding.c:517–588

print the tuple 'tuple' into the StringInfo s */

/* print the tuple 'tuple' into the StringInfo s */
static void
tuple_to_stringinfo(StringInfo s, TupleDesc tupdesc, HeapTuple tuple, bool skip_nulls)
{
	int			natt;

	/* print all columns individually */
	for (natt = 0; natt < tupdesc->natts; natt++)
	{
		Form_pg_attribute attr; /* the attribute itself */
		Oid			typid;		/* type of current attribute */
		Oid			typoutput;	/* output function */
		bool		typisvarlena;
		Datum		origval;	/* possibly toasted Datum */
		bool		isnull;		/* column is null? */

		attr = TupleDescAttr(tupdesc, natt);

		/*
		 * don't print dropped columns, we can't be sure everything is
		 * available for them
		 */
		if (attr->attisdropped)
			continue;

		/*
		 * Don't print system columns, oid will already have been printed if
		 * present.
		 */
		if (attr->attnum < 0)
			continue;

		typid = attr->atttypid;

		/* get Datum from tuple */
		origval = heap_getattr(tuple, natt + 1, tupdesc, &isnull);

		if (isnull && skip_nulls)
			continue;

		/* print attribute name */
		appendStringInfoChar(s, ' ');
		appendStringInfoString(s, quote_identifier(NameStr(attr->attname)));

		/* print attribute type */
		appendStringInfoChar(s, '[');
		appendStringInfoString(s, format_type_be(typid));
		appendStringInfoChar(s, ']');

		/* query output function */
		getTypeOutputInfo(typid,
						  &typoutput, &typisvarlena);

		/* print separator */
		appendStringInfoChar(s, ':');

		/* print data */
		if (isnull)
			appendStringInfoString(s, "null");