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#!/usr/bin/perl
# Simple script for generating prototypes for C functions
# 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 $srcdir = ".";
sub public($)
{
my ($d) = @_;
$$public_data .= $d;
}
sub usage()
{
print "Usage: mks3param.pl [options] [c files]\n";
print "OPTIONS:\n";
print " --srcdir=path Read files relative to this directory\n";
print " --builddir=path Write file relative to this directory\n";
print " --help Print this help message\n\n";
exit 0;
}
GetOptions(
'file=s' => sub { my ($f,$v) = @_; $file = $v; },
'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; },
'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; },
'help' => \&usage
) or exit(1);
sub normalize_define($$)
{
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($$)
{
my ($file, $header_name) = @_;
$file->("#ifndef $header_name\n");
$file->("#define $header_name\n\n");
$file->("/* This file was automatically generated by mks3param.pl. DO NOT EDIT */\n\n");
$file->("struct loadparm_s3_context\n");
$file->("{\n");
$file->("\tconst char * (*get_parametric)(const char *type, const char *option);");
}
sub print_footer($$)
{
my ($file, $header_name) = @_;
$file->("};");
$file->("\n#endif /* $header_name */\n\n");
}
sub handle_loadparm($$)
{
my ($file,$line) = @_;
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 %tmap = (
"BOOL" => "bool ",
"CONST_STRING" => "const char *",
"STRING" => "const char *",
"INTEGER" => "int ",
"CHAR" => "char ",
"LIST" => "const char **",
);
$file->("\t$tmap{$type} (*$name)(void);\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);
}
next;
}
close(FH);
}
print_header(\&public, $public_define);
process_file(\&public, $_) foreach (@ARGV);
print_footer(\&public, $public_define);
if (not defined($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);
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