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inc/Module/Install/XSUtil.pm  view on Meta::CPAN

            $XS_ref->{$src_file} = $c;

            _verbose "xs: $src_file" if _VERBOSE;
        }
        else{
            _verbose "c: $c" if _VERBOSE;
        }

        push @{$C_ref}, $c unless grep{ $_ eq $c } @{$C_ref};
    }

    $self->clean_files(map{
        File::Spec->catfile($_, '*.gcov'),
        File::Spec->catfile($_, '*.gcda'),
        File::Spec->catfile($_, '*.gcno'),
    } @dirs);
    $self->cc_append_to_inc('.');

    return;
}

sub cc_include_paths{
    my($self, @dirs) = @_;

    $self->_xs_initialize();

    push @{ $self->{xsu_include_paths} ||= []}, @dirs;

    my $h_map = $self->{xsu_header_map} ||= {};

    foreach my $dir(@dirs){
        my $prefix = quotemeta( File::Spec->catfile($dir, '') );
        find(sub{
            return unless / \.h(?:pp)? \z/xms;

            (my $h_file = $File::Find::name) =~ s/ \A $prefix //xms;
            $h_map->{$h_file} = $File::Find::name;
        }, $dir);
    }

    $self->cc_append_to_inc(@dirs);

    return;
}

sub install_headers{
    my $self    = shift;
    my $h_files;
    if(@_ == 0){
        $h_files = $self->{xsu_header_map} or die "install_headers: cc_include_paths not specified.\n";
    }
    elsif(@_ == 1 && ref($_[0]) eq 'HASH'){
        $h_files = $_[0];
    }
    else{
        $h_files = +{ map{ $_ => undef } @_ };
    }

    $self->_xs_initialize();

    my @not_found;
    my $h_map = $self->{xsu_header_map} || {};

    while(my($ident, $path) = each %{$h_files}){
        $path ||= $h_map->{$ident} || File::Spec->join('.', $ident);
        $path   = File::Spec->canonpath($path);

        unless($path && -e $path){
            push @not_found, $ident;
            next;
        }

        $ToInstall{$path} = File::Spec->join('$(INST_ARCHAUTODIR)', $ident);

        _verbose "install: $path as $ident" if _VERBOSE;
        my @funcs = $self->_extract_functions_from_header_file($path);
        if(@funcs){
            $self->cc_append_to_funclist(@funcs);
        }
    }

    if(@not_found){
        die "Header file(s) not found: @not_found\n";
    }

    return;
}

my $home_directory;

sub _extract_functions_from_header_file{
    my($self, $h_file) = @_;

    my @functions;

    ($home_directory) = <~> unless defined $home_directory;

    # get header file contents through cpp(1)
    my $contents = do {
        my $mm = $self->makemaker_args;

        my $cppflags = q{"-I}. File::Spec->join($Config{archlib}, 'CORE') . q{"};
        $cppflags    =~ s/~/$home_directory/g;

        $cppflags   .= ' ' . $mm->{INC} if $mm->{INC};

        $cppflags   .= ' ' . ($mm->{CCFLAGS} || $Config{ccflags});
        $cppflags   .= ' ' . $mm->{DEFINE} if $mm->{DEFINE};

        my $add_include = _is_msvc() ? '-FI' : '-include';
        $cppflags   .= ' ' . join ' ',
            map{ qq{$add_include "$_"} } qw(EXTERN.h perl.h XSUB.h);

        my $cppcmd = qq{$Config{cpprun} $cppflags $h_file};

        _verbose("extract functions from: $cppcmd") if _VERBOSE;
        `$cppcmd`;
    };

    unless(defined $contents){
        die "Cannot call C pre-processor ($Config{cpprun}): $! ($?)";
    }

    # remove other include file contents
    my $chfile = q/\# (?:line)? \s+ \d+ /;
    $contents =~ s{
        ^$chfile  \s+ (?!"\Q$h_file\E")
        .*?
        ^(?= $chfile)
    }{}xmsig;

    if(_VERBOSE){
        local *H;
        open H, "> $h_file.out"
            and print H $contents
            and close H;
    }

    while($contents =~ m{
            ([^\\;\s]+                # type
            \s+
            ([a-zA-Z_][a-zA-Z0-9_]*)  # function name
            \s*