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|
#!/usr/bin/perl
#
# Create ejs interfaces for structures in a C header file
#
use File::Basename;
use Data::Dumper;
#
# Generate parse tree for header file
#
my $file = shift;
require smb_interfaces;
my $parser = new smb_interfaces;
$header = $parser->parse($file);
#
# Make second pass over tree to make it easier to process.
#
sub flatten_structs($) {
my $obj = shift;
my $s = { %$obj };
# Map NAME, STRUCT_NAME and UNION_NAME elements into a more likeable
# property.
if (defined($obj->{STRUCT_NAME}) or defined($obj->{UNION_NAME})) {
$s->{TYPE_DEFINED} = defined($obj->{STRUCT_NAME}) ? $obj->{STRUCT_NAME}
: $obj->{UNION_NAME};
delete $s->{STRUCT_NAME};
delete $s->{UNION_NAME};
}
# Create a new list of structure fields with flattened names
foreach my $elt (@{$obj->{DATA}}) {
foreach my $name (@{$elt->{NAME}}) {
my $new_elt = { %$elt };
$new_elt->{NAME} = $name;
# $new_elt->{PARENT} = $s;
push(@{$s->{FIELDS}}, flatten_structs($new_elt));
}
}
delete $s->{DATA};
return $s;
}
@newheader = map { flatten_structs($_) } @{$header};
#
# Generate implementation
#
my $basename = basename($file, ".h");
stat "libcli/gen_raw" || mkdir("libcli/gen_raw") || die("mkdir");
open(FILE, ">libcli/gen_raw/ejs_${basename}.c");
print FILE "/* EJS wrapper functions auto-generated by build_smb_interfaces.pl */\n\n";
print FILE "#include \"includes.h\"\n";
print FILE "#include \"lib/appweb/ejs/ejs.h\"\n";
print FILE "#include \"scripting/ejs/ejsrpc.h\"\n"; # TODO: remove this
print FILE "\n";
sub transfer_element($$$) {
my $dir = shift;
my $prefix = shift;
my $elt = shift;
print FILE "\tejs_${dir}_$elt->{TYPE}(ejs, v, \"$prefix.$elt->{NAME}\")\n";
}
sub transfer_struct($$) {
my $dir = shift;
my $struct = shift;
foreach my $field (@{$struct->{FIELDS}}) {
next if $dir eq "pull" and $field->{NAME} eq "out";
next if $dir eq "push" and $field->{NAME} eq "in";
if ($field->{TYPE} eq "struct") {
foreach $subfield (@{$field->{FIELDS}}) {
transfer_element($dir, $field->{NAME}, $subfield);
}
} else {
transfer_element($dir, $struct->{NAME}, $field);
}
}
}
# Top level call functions
foreach my $s (@newheader) {
if ($s->{TYPE} eq "struct") {
# Top level struct
print FILE "static int ejs_$s->{TYPE_DEFINED}(int eid, int argc, struct MprVar **argv)\n";
print FILE "{\n";
print FILE "\tstruct $s->{TYPE_DEFINED} params;\n";
print FILE "\tstruct smbcli_tree *tree;\n";
print FILE "\tNTSTATUS result;\n\n";
print FILE "\tif (argc != 1 || argv[0]->type != MPR_TYPE_OBJECT) {\n";
print FILE "\t\tejsSetErrorMsg(eid, \"invalid arguments\");\n";
print FILE "\t\treturn -1;\n";
print FILE "\t}\n\n";
transfer_struct("pull", $s);
my $fn = $s->{TYPE_DEFINED};
$fn =~ s/^smb_/smb_raw_/;
print FILE "\n\tresult = $fn(tree, ¶ms);\n\n";
transfer_struct("push", $s);
print FILE "\n\tmpr_Return(eid, mprNTSTATUS(result));\n\n";
print FILE "\tif (NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_ERROR)) {\n";
print FILE "\t\treturn -1;\n";
print FILE "\t}\n\n";
print FILE "\treturn 0;\n";
print FILE "}\n\n";
} else {
# Top level union
foreach my $arm (@{$s->{FIELDS}}) {
print FILE "static int ejs_$s->{TYPE_DEFINED}_$arm->{NAME}(int eid, int argc, struct MprVar **argv)\n";
print FILE "{\n";
print FILE "\tunion $s->{TYPE_DEFINED} params;\n";
print FILE "\tstruct smbcli_tree *tree;\n";
print FILE "\tNTSTATUS result;\n\n";
print FILE "\tif (argc != 1 || argv[0]->type != MPR_TYPE_OBJECT) {\n";
print FILE "\t\tejsSetErrorMsg(eid, \"invalid arguments\");\n";
print FILE "\t\treturn -1;\n";
print FILE "\t}\n\n";
transfer_struct("pull", $arm);
my $fn = $s->{TYPE_DEFINED};
$fn =~ s/^smb_/smb_raw_/;
print FILE "\n\tresult = $fn(tree, ¶ms);\n\n";
transfer_struct("push", $arm);
print FILE "\n\tmpr_Return(eid, mprNTSTATUS(result));\n\n";
print FILE "\tif (NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_ERROR)) {\n";
print FILE "\t\treturn -1;\n";
print FILE "\t}\n\n";
print FILE "\treturn 0;\n";
print FILE "}\n\n";
}
}
}
# Module initialisation
print FILE "static int ejs_${basename}_init(int eid, int argc, struct MprVar **argv)\n";
print FILE "{\n";
print FILE "\tstruct MprVar *obj = mprInitObject(eid, \"${basename}\", argc, argv);\n\n";
foreach my $s (@newheader) {
if ($s->{TYPE} eq "struct") {
print FILE "\tmprSetCFunction(obj, \"$s->{TYPE_DEFINED}\", ejs_$s->{TYPE_DEFINED});\n";
} else {
foreach my $arm (@{$s->{FIELDS}}) {
print FILE "\tmprSetCFunction(obj, \"$s->{TYPE_DEFINED}_$arm->{NAME}\", ejs_$s->{TYPE_DEFINED});\n";
}
}
}
print FILE "}\n\n";
print FILE "NTSTATUS ejs_init_${basename}(void)\n";
print FILE "{\n";
print FILE "\treturn smbcalls_register_ejs(\"${basename}_init\", ejs_${basename}_init);\n";
print FILE "}\n";
close(FILE);
exit;
|
