#!/usr/bin/perl
#
# Create ejs interfaces for structures in a C header file
#

use File::Basename;
my $file = shift;
my $basename = basename($file, ".h");

require smb_interfaces;
my $parser = new smb_interfaces;
$header = $parser->parse($file);

use Data::Dumper;
#print Dumper($header);

# Create header

open(FILE, ">ejs_${basename}.h");

print FILE "/* header auto-generated by build_smb_interfaces.pl */\n\n";

print FILE "#ifndef _ejs_${basename}_h\n";
print FILE "#define _ejs_${basename}_h\n\n";

sub struct_name($)
{
  my $obj = shift;
  return defined($obj->{STRUCT_NAME}) ? $obj->{STRUCT_NAME} : $obj->{UNION_NAME};
}

sub prototypes_for($)
{
  my $obj = shift;
  my $name = struct_name($obj);

  print FILE "NTSTATUS ejs_push_$name(struct ejs_rpc *, struct MprVar *, const char *, const uint32_t *);\n";
  print FILE "NTSTATUS ejs_pull_$name(struct ejs_rpc *, struct MprVar *, const char *, const uint32_t *);\n";
}

sub pushpull_for($)
{
  my $obj = shift;
  my $name = struct_name($obj);

  print FILE "NTSTATUS ejs_push_$name(struct ejs_rpc *ejs, struct MprVar *v, const char *name, const uint32_t *r)\n";
  print FILE "{\n";

  print FILE "\tNDR_CHECK(ejs_push_struct_start(ejs, &v, name));\n";

  print FILE "\n\treturn NT_STATUS_OK;\n";
  print FILE "}\n\n";

  print FILE "NTSTATUS ejs_pull_$name(struct ejs_rpc *ejs, struct MprVar *v, const char *name, const uint32_t *r)\n";
  print FILE "{\n";
  print FILE "\treturn NT_STATUS_OK;\n";
  print FILE "}\n\n";
}

foreach my $x (@{$header}) {

  # Prototypes for top level structures and unions

  prototypes_for($x);

  # Prototypes for non-anonymous nested structures and unions

  foreach my $e1 (@{$x->{DATA}}) {
    foreach my $e2 (@{$e1->{DATA}}) {
      if (defined($e2->{STRUCT_NAME}) or defined($e2->{UNION_NAME})) {
	prototypes_for($e2);
      }
    }
  }
}

print FILE "#endif\n";

close(FILE);

# Create file

open(FILE, ">ejs_${basename}.c");

print FILE "/* EJS wrapper functions auto-generated by build_smb_interfaces.pl */\n\n";

# Top level functions

foreach my $x (@{$header}) {
  pushpull_for($x);
}

close(FILE);