Function dumpExtProtocol

src/bin/pg_dump/pg_dump.c:15908–16085

* dumpExtProtocol * write out a single external protocol definition */

 *	  write out a single external protocol definition
 */
static void
dumpExtProtocol(Archive *fout, const ExtProtInfo *ptcinfo)
{
#define FCOUNT	3
#define READFN_IDX 0
#define WRITEFN_IDX 1
#define VALIDFN_IDX 2

	typedef struct
	{
		Oid oid; 				/* func's oid */
		char* name; 			/* func name */
		FuncInfo* pfuncinfo; 	/* FuncInfo ptr */
		bool dumpable; 			/* should we dump this function */
		bool internal;			/* is it an internal function */
	} ProtoFunc;

	ProtoFunc	protoFuncs[FCOUNT];

	PQExpBuffer q;
	PQExpBuffer delq;
	PQExpBuffer	nsq;
	char	   *prev_ns;
	char	   *namecopy;
	int			i;
	bool		has_internal = false;

	/* Skip if not to be dumped */
	if (!ptcinfo->dobj.dump || fout->dopt->dataOnly)
		return;

	/* init and fill the protoFuncs array */
	memset(protoFuncs, 0, sizeof(protoFuncs));
	protoFuncs[READFN_IDX].oid = ptcinfo->ptcreadid;
	protoFuncs[WRITEFN_IDX].oid = ptcinfo->ptcwriteid;
	protoFuncs[VALIDFN_IDX].oid = ptcinfo->ptcvalidid;

	for (i = 0; i < FCOUNT; i++)
	{
		if (protoFuncs[i].oid == InvalidOid)
		{
			protoFuncs[i].dumpable = false;
			protoFuncs[i].internal = true;
			/*
			 * We have at least one internal function, signal that we need the
			 * public schema in the search_path
			 */
			has_internal = true;
		}
		else
		{
			protoFuncs[i].pfuncinfo = findFuncByOid(protoFuncs[i].oid);
			if (protoFuncs[i].pfuncinfo != NULL)
			{
				protoFuncs[i].dumpable = true;
				protoFuncs[i].name = pg_strdup(protoFuncs[i].pfuncinfo->dobj.name);
				protoFuncs[i].internal = false;
			}