Function transformFormatOpts

src/backend/commands/exttablecmds.c:651–795

* Transform the FORMAT options List into a new List suitable for storing in * pg_foreigntable.ftoptions. */

 * pg_foreigntable.ftoptions.
 */
static List *
transformFormatOpts(char formattype, List *formatOpts, int numcols, bool iswritable)
{
	List 	   *cslist = NIL;
	ListCell   *option;
	ParseState *pstate;

	CopyFormatOptions opts;
	memset(&opts, 0, sizeof(opts));

	pstate = make_parsestate(NULL);
	pstate->p_sourcetext = NULL;

	Assert(fmttype_is_custom(formattype) ||
		   fmttype_is_text(formattype) ||
		   fmttype_is_csv(formattype));

	/* Extract options from the statement node tree */
	if (fmttype_is_text(formattype) || fmttype_is_csv(formattype))
	{
		foreach(option, formatOpts)
		{
			DefElem    *defel = (DefElem *) lfirst(option);

			if (strcmp(defel->defname, "delimiter") == 0 ||
				strcmp(defel->defname, "null") == 0 ||
				strcmp(defel->defname, "header") == 0 ||
				strcmp(defel->defname, "quote") == 0 ||
				strcmp(defel->defname, "escape") == 0 ||
				strcmp(defel->defname, "force_not_null") == 0 ||
				strcmp(defel->defname, "force_quote") == 0 ||
				strcmp(defel->defname, "fill_missing_fields") == 0 ||
				strcmp(defel->defname, "newline") == 0)
			{
				/* ok */
			}
			else if (strcmp(defel->defname, "formatter") == 0)
				ereport(ERROR,
						(errcode(ERRCODE_SYNTAX_ERROR),
						 errmsg("formatter option only valid for custom formatters")));
			else
				elog(ERROR, "option \"%s\" not recognized",
					 defel->defname);
		}

		/* If CSV format was chosen, make it visible to ProcessCopyOptions. */
		if (fmttype_is_csv(formattype))
		{
			formatOpts = list_copy(formatOpts);
			formatOpts = lappend(formatOpts, makeDefElem("format", (Node *) makeString("csv"), -1));

			cslist = lappend(cslist, makeDefElem("format", (Node *) makeString("csv"), -1));
		}
		else
			cslist = lappend(cslist, makeDefElem("format", (Node *) makeString("text"), -1));

		/* verify all user supplied control char combinations are legal */
		ProcessCopyOptions(pstate,