Extend psql's \lo_list/\dl to be able to print large objects' ACLs.

The ACL is printed when you add + to the command, similarly to
various other psql backslash commands.

Along the way, move the code for this into describe.c,
where it is a better fit (and can share some code).

Pavel Luzanov, reviewed by Georgios Kokolatos

Discussion: https://postgr.es/m/[email protected]

1 files changed, 46 insertions, 0 deletions

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index 0615de53255..cdb33719ffa 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -6463,3 +6463,49 @@ listOpFamilyFunctions(const char *access_method_pattern,
 	PQclear(res);
 	return true;
 }
+
+/*
+ * \dl or \lo_list
+ * Lists large objects
+ */
+bool
+listLargeObjects(bool verbose)
+{
+	PQExpBufferData buf;
+	PGresult   *res;
+	printQueryOpt myopt = pset.popt;
+
+	initPQExpBuffer(&buf);
+
+	printfPQExpBuffer(&buf,
+					  "SELECT oid as \"%s\",\n"
+					  "  pg_catalog.pg_get_userbyid(lomowner) as \"%s\",\n  ",
+					  gettext_noop("ID"),
+					  gettext_noop("Owner"));
+
+	if (verbose)
+	{
+		printACLColumn(&buf, "lomacl");
+		appendPQExpBufferStr(&buf, ",\n  ");
+	}
+
+	appendPQExpBuffer(&buf,
+					  "pg_catalog.obj_description(oid, 'pg_largeobject') as \"%s\"\n"
+					  "FROM pg_catalog.pg_largeobject_metadata\n"
+					  "ORDER BY oid",
+					  gettext_noop("Description"));
+
+	res = PSQLexec(buf.data);
+	termPQExpBuffer(&buf);
+	if (!res)
+		return false;
+
+	myopt.nullPrint = NULL;
+	myopt.title = _("Large objects");
+	myopt.translate_header = true;
+
+	printQuery(res, &myopt, pset.queryFout, false, pset.logfile);
+
+	PQclear(res);
+	return true;
+}