s4-param Autogenerate the loadparm_globals and loadparm_service tables

This makes it much easier and less error prone to add new parameters
as we merge the s3 and s4 loadparm systems.

Andrew Bartlett

Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue Jun 21 04:41:54 CEST 2011 on sn-devel-104

1 files changed, 192 insertions, 0 deletions

diff --git a/source4/script/mkparamdefs.pl b/source4/script/mkparamdefs.pl
new file mode 100644
index 0000000000..9b255a86fc
--- /dev/null
+++ b/source4/script/mkparamdefs.pl
@@ -0,0 +1,192 @@
+#!/usr/bin/perl
+# Generate loadparm tables for loadparm.c
+# by Andrew Bartlett
+# based on mkproto.pl Written by Jelmer Vernooij
+# based on the original mkproto.sh by Andrew Tridgell
+
+use strict;
+
+# don't use warnings module as it is not portable enough
+# use warnings;
+
+use Getopt::Long;
+use File::Basename;
+use File::Path;
+
+#####################################################################
+# read a file into a string
+
+my $file = undef;
+my $public_define = undef;
+my $_public = "";
+my $_private = "";
+my $public_data = \$_public;
+my $builddir = ".";
+my $srcdir = ".";
+my $generate_scope = undef;
+
+sub public($)
+{
+	my ($d) = @_;
+	$$public_data .= $d;
+}
+
+sub usage()
+{
+	print "Usage: mkparamdefs.pl [options] [c files]\n";
+	print "OPTIONS:\n";
+	print "  --srcdir=path          Read files relative to this directory\n";
+	print "  --builddir=path        Write file relative to this directory\n";
+	print "  --generate-scope=[GLOBAL|LOCAL]        Filter which definitions to generate\n";
+	print "  --help                 Print this help message\n\n";
+	exit 0;
+}
+
+GetOptions(
+	'file=s' => sub { my ($f,$v) = @_; $file = $v; },
+	'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; },
+	'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; },
+	'generate-scope=s' => sub { my ($f,$v) = @_; $generate_scope = $v; },
+	'help' => \&usage
+) or exit(1);
+
+sub normalize_define($$)
+{
+	my ($define, $file) = @_;
+
+	if (not defined($define) and defined($file)) {
+		$define = "__" . uc($file) . "__";
+		$define =~ tr{./}{__};
+		$define =~ tr{\-}{_};
+	} elsif (not defined($define)) {
+		$define = '_S3_PARAM_H_';
+	}
+
+	return $define;
+}
+
+$public_define = normalize_define($public_define, $file);
+
+sub file_load($)
+{
+    my($filename) = @_;
+    local(*INPUTFILE);
+    open(INPUTFILE, $filename) or return undef;
+    my($saved_delim) = $/;
+    undef $/;
+    my($data) = <INPUTFILE>;
+    close(INPUTFILE);
+    $/ = $saved_delim;
+    return $data;
+}
+
+sub print_header($$$)
+{
+	my ($file, $header_name,$generate_scope) = @_;
+	$file->("#ifndef $header_name\n");
+	$file->("#define $header_name\n\n");
+$file->("/* This file was automatically generated by mkparmdefs.pl. DO NOT EDIT */\n\n");
+	$file->("/**\n");
+	if ($generate_scope eq "GLOBAL") {
+	    $file->(" * This structure describes global (ie., server-wide) parameters.\n");
+	    $file->(" */\n");
+	    $file->("struct loadparm_global \n");
+	} elsif ($generate_scope eq "LOCAL") {
+	    $file->(" * This structure describes a single service.\n");
+	    $file->(" */\n");
+	    $file->("struct loadparm_service \n");
+	}
+$file->("{\n");
+}
+
+sub print_footer($$$) 
+{
+	my ($file, $header_name, $generate_scope) = @_;
+	$file->("LOADPARM_EXTRA_" . $generate_scope . "S\n");
+	$file->("};\n");
+	$file->("\n#endif /* $header_name */\n\n");
+}
+
+sub handle_loadparm($$$) 
+{
+	my ($file,$line,$generate_scope) = @_;
+
+	if ($line =~ /^FN_(GLOBAL|LOCAL)_(CONST_STRING|STRING|BOOL|bool|CHAR|INTEGER|LIST)\((\w+),(.*)\)/o) {
+		my $scope = $1;
+		my $type = $2;
+		my $name = $3;
+		my $var = $4;
+
+		my %tmap = (
+			    "BOOL" => "int ",
+			    "CONST_STRING" => "char *",
+			    "STRING" => "char *",
+			    "INTEGER" => "int ",
+			    "CHAR" => "char ",
+			    "LIST" => "const char **",
+			    );
+
+		if ($scope eq $generate_scope) {
+		    $file->("\t$tmap{$type} $var;\n");
+		}
+	}
+}
+
+sub process_file($$) 
+{
+	my ($file, $filename) = @_;
+
+	$filename =~ s/\.o$/\.c/g;
+
+	if ($filename =~ /^\//) {
+		open(FH, "<$filename") or die("Failed to open $filename");
+	} elsif (!open(FH, "< $builddir/$filename")) {
+	    open(FH, "< $srcdir/$filename") || die "Failed to open $filename";
+	}
+
+	my $comment = undef;
+	my $incomment = 0;
+	while (my $line = <FH>) {	      
+		if ($line =~ /^\/\*\*/) { 
+			$comment = "";
+			$incomment = 1;
+		}
+
+		if ($incomment) {
+			$comment .= $line;
+			if ($line =~ /\*\//) {
+				$incomment = 0;
+			}
+		} 
+
+		# these are ordered for maximum speed
+		next if ($line =~ /^\s/);
+	      
+		next unless ($line =~ /\(/);
+
+		next if ($line =~ /^\/|[;]/);
+
+		if ($line =~ /^FN_/) {
+			handle_loadparm($file, $line, $generate_scope);
+		}
+		next;
+	}
+
+	close(FH);
+}
+
+
+print_header(\&public, $public_define, $generate_scope);
+
+process_file(\&public, $_) foreach (@ARGV);
+print_footer(\&public, $public_define, $generate_scope);
+
+if (not defined($file)) {
+	print STDOUT $$public_data;
+}
+
+mkpath(dirname($file), 0, 0755);
+open(PUBLIC, ">$file") or die("Can't open `$file': $!"); 
+print PUBLIC "$$public_data";
+close(PUBLIC);
+