Add DBMS_OUTPUT package with Oracle-compatible buffering API

Implements ENABLE, DISABLE, PUT, PUT_LINE, NEW_LINE, GET_LINE, and GET_LINES procedures in the plisql extension. Supports buffer size limits (2000-1000000 bytes) and ORU-10027 overflow error.

Author: rophy

src/bin/initdb/initdb.c

@@ -2091,7 +2091,10 @@ load_plpgsql(FILE *cmdfd)
 static void
 load_plisql(FILE *cmdfd)
 {
+	/* Switch to oracle mode to allow CREATE PACKAGE in extension SQL */
+	PG_CMD_PUTS("set ivorysql.compatible_mode to oracle;\n\n");
 	PG_CMD_PUTS("CREATE EXTENSION plisql;\n\n");
+	PG_CMD_PUTS("set ivorysql.compatible_mode to pg;\n\n");
 }
 
 static void

src/pl/plisql/src/Makefile

@@ -40,6 +40,7 @@ rpath =
 OBJS = \
 	$(WIN32RES) \
 	pl_comp.o \
+	pl_dbms_output.o \
 	pl_exec.o \
 	pl_funcs.o \
 	pl_gram.o \
@@ -58,7 +59,7 @@ REGRESS = plisql_array plisql_call plisql_control plisql_copy plisql_domain \
 	plisql_record plisql_cache plisql_simple plisql_transaction \
 	plisql_trap plisql_trigger plisql_varprops plisql_nested_subproc \
 	plisql_nested_subproc2 plisql_out_parameter plisql_type_rowtype \
-	plisql_exception
+	plisql_exception plisql_dbms_output
 
 # where to find ora_gen_keywordlist.pl and subsidiary files
 TOOLSDIR = $(top_srcdir)/src/tools