mm_vms.pm

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

    # Redirection on VMS goes before the command, not after as on Unix.
    # $(DEV_NULL) is used once and its not worth going nuts over making
    # it work.  However, Unix's DEV_NULL is quite wrong for VMS.
    $self->{DEV_NULL}   = '';

    if ($self->{OBJECT} =~ /\s/) {
        $self->{OBJECT} =~ s/(\\)?\n+\s+/ /g;
        $self->{OBJECT} = $self->wraplist(
            map $self->fixpath($_,0), split /,?\s+/, $self->{OBJECT}
        );
    }

    $self->{LDFROM} = $self->wraplist(
        map $self->fixpath($_,0), split /,?\s+/, $self->{LDFROM}
    );
}


=item init_platform (override)

Add PERL_VMS, MM_VMS_REVISION and MM_VMS_VERSION.

MM_VMS_REVISION is for backwards compatibility before MM_VMS had a
$VERSION.

=cut

sub init_platform {
    my($self) = shift;

    $self->{MM_VMS_REVISION} = $Revision;
    $self->{MM_VMS_VERSION}  = $VERSION;
    $self->{PERL_VMS} = $self->catdir($self->{PERL_SRC}, 'VMS')
      if $self->{PERL_SRC};
}


=item platform_constants

=cut

sub platform_constants {
    my($self) = shift;
    my $make_frag = '';

    foreach my $macro (qw(PERL_VMS MM_VMS_REVISION MM_VMS_VERSION))
    {
        next unless defined $self->{$macro};
        $make_frag .= "$macro = $self->{$macro}\n";
    }

    return $make_frag;
}


=item init_VERSION (override)

Override the *DEFINE_VERSION macros with VMS semantics.  Translate the
MAKEMAKER filepath to VMS style.

=cut

sub init_VERSION {
    my $self = shift;

    $self->SUPER::init_VERSION;

    $self->{DEFINE_VERSION}    = '"$(VERSION_MACRO)=""$(VERSION)"""';
    $self->{XS_DEFINE_VERSION} = '"$(XS_VERSION_MACRO)=""$(XS_VERSION)"""';
    $self->{MAKEMAKER} = vmsify($INC{'ExtUtils/MakeMaker.pm'});
}


=item constants (override)

Fixes up numerous file and directory macros to insure VMS syntax
regardless of input syntax.  Also makes lists of files
comma-separated.

=cut

sub constants {
    my($self) = @_;

    # Be kind about case for pollution
    for (@ARGV) { $_ = uc($_) if /POLLUTE/i; }

    # Cleanup paths for directories in MMS macros.
    foreach my $macro ( qw [
            INST_BIN INST_SCRIPT INST_LIB INST_ARCHLIB 
            PERL_LIB PERL_ARCHLIB
            PERL_INC PERL_SRC ],
                        (map { 'INSTALL'.$_ } $self->installvars)
                      ) 
    {
        next unless defined $self->{$macro};
        next if $macro =~ /MAN/ && $self->{$macro} eq 'none';
        $self->{$macro} = $self->fixpath($self->{$macro},1);
    }

    # Cleanup paths for files in MMS macros.
    foreach my $macro ( qw[LIBPERL_A FIRST_MAKEFILE MAKEFILE_OLD 
                           MAKE_APERL_FILE MYEXTLIB] ) 
    {
        next unless defined $self->{$macro};
        $self->{$macro} = $self->fixpath($self->{$macro},0);
    }

    # Fixup files for MMS macros
    # XXX is this list complete?
    for my $macro (qw/
                   FULLEXT VERSION_FROM OBJECT LDFROM
	      /	) {
        next unless defined $self->{$macro};
        $self->{$macro} = $self->fixpath($self->{$macro},0);
    }


    for my $macro (qw/ XS MAN1PODS MAN3PODS PM /) {
        # Where is the space coming from? --jhi
        next unless $self ne " " && defined $self->{$macro};
        my %tmp = ();
        for my $key (keys %{$self->{$macro}}) {
            $tmp{$self->fixpath($key,0)} = 
                                     $self->fixpath($self->{$macro}{$key},0);
        }
        $self->{$macro} = \%tmp;
    }

    for my $macro (qw/ C O_FILES H /) {
        next unless defined $self->{$macro};
        my @tmp = ();
        for my $val (@{$self->{$macro}}) {
            push(@tmp,$self->fixpath($val,0));
        }
        $self->{$macro} = \@tmp;
    }

    # mms/k does not define a $(MAKE) macro.
    $self->{MAKE} = '$(MMS)$(MMSQUALIFIERS)';

    return $self->SUPER::constants;
}


=item special_targets

Clear the default .SUFFIXES and put in our own list.

=cut

sub special_targets {
    my $self = shift;

    my $make_frag .= <<'MAKE_FRAG';
.SUFFIXES :
.SUFFIXES : $(OBJ_EXT) .c .cpp .cxx .xs

MAKE_FRAG

    return $make_frag;
}

=item cflags (override)

Bypass shell script and produce qualifiers for CC directly (but warn
user if a shell script for this extension exists).  Fold multiple
/Defines into one, since some C compilers pay attention to only one
instance of this qualifier on the command line.

=cut

sub cflags {
    my($self,$libperl) = @_;
    my($quals) = $self->{CCFLAGS} || $Config{'ccflags'};
    my($definestr,$undefstr,$flagoptstr) = ('','','');
    my($incstr) = '/Include=($(PERL_INC)';
    my($name,$sys,@m);

    ( $name = $self->{NAME} . "_cflags" ) =~ s/:/_/g ;
    print STDOUT "Unix shell script ".$Config{"$self->{'BASEEXT'}_cflags"}.
         " required to modify CC command for $self->{'BASEEXT'}\n"
    if ($Config{$name});

    if ($quals =~ / -[DIUOg]/) {
	while ($quals =~ / -([Og])(\d*)\b/) {
	    my($type,$lvl) = ($1,$2);
	    $quals =~ s/ -$type$lvl\b\s*//;
	    if ($type eq 'g') { $flagoptstr = '/NoOptimize'; }
	    else { $flagoptstr = '/Optimize' . (defined($lvl) ? "=$lvl" : ''); }
	}
	while ($quals =~ / -([DIU])(\S+)/) {
	    my($type,$def) = ($1,$2);
	    $quals =~ s/ -$type$def\s*//;
	    $def =~ s/"/""/g;
	    if    ($type eq 'D') { $definestr .= qq["$def",]; }
	    elsif ($type eq 'I') { $incstr .= ',' . $self->fixpath($def,1); }
	    else                 { $undefstr  .= qq["$def",]; }
	}
    }
    if (length $quals and $quals !~ m!/!) {
	warn "MM_VMS: Ignoring unrecognized CCFLAGS elements \"$quals\"\n";
	$quals = '';
    }
    $definestr .= q["PERL_POLLUTE",] if $self->{POLLUTE};
    if (length $definestr) { chop($definestr); $quals .= "/Define=($definestr)"; }
    if (length $undefstr)  { chop($undefstr);  $quals .= "/Undef=($undefstr)";   }
    # Deal with $self->{DEFINE} here since some C compilers pay attention
    # to only one /Define clause on command line, so we have to
    # conflate the ones from $Config{'ccflags'} and $self->{DEFINE}
    # ($self->{DEFINE} has already been VMSified in constants() above)
    if ($self->{DEFINE}) { $quals .= $self->{DEFINE}; }
    for my $type (qw(Def Undef)) {
	my(@terms);
	while ($quals =~ m:/${type}i?n?e?=([^/]+):ig) {
		my $term = $1;
		$term =~ s:^\((.+)\)$:$1:;
		push @terms, $term;
	    }
	if ($type eq 'Def') {
	    push @terms, qw[ $(DEFINE_VERSION) $(XS_DEFINE_VERSION) ];
	}
	if (@terms) {
	    $quals =~ s:/${type}i?n?e?=[^/]+::ig;
	    $quals .= "/${type}ine=(" . join(',',@terms) . ')';
	}
    }

    $libperl or $libperl = $self->{LIBPERL_A} || "libperl.olb";

    # Likewise with $self->{INC} and /Include
    if ($self->{'INC'}) {
	my(@includes) = split(/\s+/,$self->{INC});
	foreach (@includes) {
	    s/^-I//;
	    $incstr .= ','.$self->fixpath($_,1);
	}
    }
    $quals .= "$incstr)";
#    $quals =~ s/,,/,/g; $quals =~ s/\(,/(/g;
    $self->{CCFLAGS} = $quals;

    $self->{PERLTYPE} ||= '';

    $self->{OPTIMIZE} ||= $flagoptstr || $Config{'optimize'};
    if ($self->{OPTIMIZE} !~ m!/!) {
	if    ($self->{OPTIMIZE} =~ m!-g!) { $self->{OPTIMIZE} = '/Debug/NoOptimize' }
	elsif ($self->{OPTIMIZE} =~ /-O(\d*)/) {
	    $self->{OPTIMIZE} = '/Optimize' . (defined($1) ? "=$1" : '');
	}
	else {
	    warn "MM_VMS: Can't parse OPTIMIZE \"$self->{OPTIMIZE}\"; using default\n" if length $self->{OPTIMIZE};
	    $self->{OPTIMIZE} = '/Optimize';
	}
    }

    return $self->{CFLAGS} = qq{
CCFLAGS = $self->{CCFLAGS}
OPTIMIZE = $self->{OPTIMIZE}
PERLTYPE = $self->{PERLTYPE}
};
}

=item const_cccmd (override)

Adds directives to point C preprocessor to the right place when
handling #include E<lt>sys/foo.hE<gt> directives.  Also constructs CC
command line a bit differently than MM_Unix method.

=cut

sub const_cccmd {
    my($self,$libperl) = @_;
    my(@m);

    return $self->{CONST_CCCMD} if $self->{CONST_CCCMD};
    return '' unless $self->needs_linking();
    if ($Config{'vms_cc_type'} eq 'gcc') {
        push @m,'
.FIRST
	',$self->{NOECHO},'If F$TrnLnm("Sys").eqs."" Then Define/NoLog SYS GNU_CC_Include:[VMS]';
    }
    elsif ($Config{'vms_cc_type'} eq 'vaxc') {
        push @m,'
.FIRST
	',$self->{NOECHO},'If F$TrnLnm("Sys").eqs."" .and. F$TrnLnm("VAXC$Include").eqs."" Then Define/NoLog SYS Sys$Library
	',$self->{NOECHO},'If F$TrnLnm("Sys").eqs."" .and. F$TrnLnm("VAXC$Include").nes."" Then Define/NoLog SYS VAXC$Include';
    }
    else {
        push @m,'
.FIRST
	',$self->{NOECHO},'If F$TrnLnm("Sys").eqs."" .and. F$TrnLnm("DECC$System_Include").eqs."" Then Define/NoLog SYS ',
		($Config{'archname'} eq 'VMS_AXP' ? 'Sys$Library' : 'DECC$Library_Include'),'
	',$self->{NOECHO},'If F$TrnLnm("Sys").eqs."" .and. F$TrnLnm("DECC$System_Include").nes."" Then Define/NoLog SYS DECC$System_Include';
    }

    push(@m, "\n\nCCCMD = $Config{'cc'} \$(CCFLAGS)\$(OPTIMIZE)\n");

    $self->{CONST_CCCMD} = join('',@m);
}


=item tools_other (override)

Throw in some dubious extra macros for Makefile args.

Also keep around the old $(SAY) macro in case somebody's using it.

=cut

sub tools_other {
    my($self) = @_;

    # XXX Are these necessary?  Does anyone override them?  They're longer
    # than just typing the literal string.
    my $extra_tools = <<'EXTRA_TOOLS';

# Just in case anyone is using the old macro.
USEMACROS = $(MACROSTART)
SAY = $(ECHO)

EXTRA_TOOLS

    return $self->SUPER::tools_other . $extra_tools;
}

=item init_dist (override)

VMSish defaults for some values.

  macro         description                     default

  ZIPFLAGS      flags to pass to ZIP            -Vu

  COMPRESS      compression command to          gzip
                use for tarfiles
  SUFFIX        suffix to put on                -gz 
                compressed files

  SHAR          shar command to use             vms_share

  DIST_DEFAULT  default target to use to        tardist
                create a distribution

  DISTVNAME     Use VERSION_SYM instead of      $(DISTNAME)-$(VERSION_SYM)
                VERSION for the name

=cut

sub init_dist {
    my($self) = @_;
    $self->{ZIPFLAGS}     ||= '-Vu';
    $self->{COMPRESS}     ||= 'gzip';
    $self->{SUFFIX}       ||= '-gz';
    $self->{SHAR}         ||= 'vms_share';
    $self->{DIST_DEFAULT} ||= 'zipdist';

    $self->SUPER::init_dist;

    $self->{DISTVNAME}    = "$self->{DISTNAME}-$self->{VERSION_SYM}";
}

=item c_o (override)

Use VMS syntax on command line.  In particular, $(DEFINE) and
$(PERL_INC) have been pulled into $(CCCMD).  Also use MM[SK] macros.

=cut

sub c_o {
    my($self) = @_;
    return '' unless $self->needs_linking();
    '
.c$(OBJ_EXT) :
	$(CCCMD) $(CCCDLFLAGS) $(MMS$TARGET_NAME).c

.cpp$(OBJ_EXT) :
	$(CCCMD) $(CCCDLFLAGS) $(MMS$TARGET_NAME).cpp

.cxx$(OBJ_EXT) :
	$(CCCMD) $(CCCDLFLAGS) $(MMS$TARGET_NAME).cxx

';
}

=item xs_c (override)

Use MM[SK] macros.

=cut

sub xs_c {
    my($self) = @_;
    return '' unless $self->needs_linking();
    '
.xs.c :
	$(XSUBPPRUN) $(XSPROTOARG) $(XSUBPPARGS) $(MMS$TARGET_NAME).xs >$(MMS$TARGET)
';
}

=item xs_o (override)

Use MM[SK] macros, and VMS command line for C compiler.

=cut

sub xs_o {	# many makes are too dumb to use xs_c then c_o
    my($self) = @_;
    return '' unless $self->needs_linking();
    '
.xs$(OBJ_EXT) :
	$(XSUBPPRUN) $(XSPROTOARG) $(XSUBPPARGS) $(MMS$TARGET_NAME).xs >$(MMS$TARGET_NAME).c
	$(CCCMD) $(CCCDLFLAGS) $(MMS$TARGET_NAME).c
';
}


=item dlsyms (override)

Create VMS linker options files specifying universal symbols for this
extension's shareable image, and listing other shareable images or 
libraries to which it should be linked.

=cut

sub dlsyms {
    my($self,%attribs) = @_;

    return '' unless $self->needs_linking();

    my($funcs) = $attribs{DL_FUNCS} || $self->{DL_FUNCS} || {};
    my($vars)  = $attribs{DL_VARS}  || $self->{DL_VARS}  || [];
    my($funclist)  = $attribs{FUNCLIST}  || $self->{FUNCLIST}  || [];
    my(@m);

    unless ($self->{SKIPHASH}{'dynamic'}) {
	push(@m,'
dynamic :: $(INST_ARCHAUTODIR)$(BASEEXT).opt
	$(NOECHO) $(NOOP)
');
    }

    push(@m,'
static :: $(INST_ARCHAUTODIR)$(BASEEXT).opt
	$(NOECHO) $(NOOP)
') unless $self->{SKIPHASH}{'static'};

    push @m,'
$(INST_ARCHAUTODIR)$(BASEEXT).opt : $(BASEEXT).opt
	$(CP) $(MMS$SOURCE) $(MMS$TARGET)

$(BASEEXT).opt : Makefile.PL
	$(PERLRUN) -e "use ExtUtils::Mksymlists;" -
	',qq[-e "Mksymlists('NAME' => '$self->{NAME}', 'DL_FUNCS' => ],
	neatvalue($funcs),q[, 'DL_VARS' => ],neatvalue($vars),
	q[, 'FUNCLIST' => ],neatvalue($funclist),qq[)"\n];

    push @m, '	$(PERL) -e "print ""$(INST_STATIC)/Include=';
    if ($self->{OBJECT} =~ /\bBASEEXT\b/ or
        $self->{OBJECT} =~ /\b$self->{BASEEXT}\b/i) { 
        push @m, ($Config{d_vms_case_sensitive_symbols}
	           ? uc($self->{BASEEXT}) :'$(BASEEXT)');
    }
    else {  # We don't have a "main" object file, so pull 'em all in
       # Upcase module names if linker is being case-sensitive
       my($upcase) = $Config{d_vms_case_sensitive_symbols};
	my(@omods) = map { s/\.[^.]*$//;         # Trim off file type
	                   s[\$\(\w+_EXT\)][];   # even as a macro
	                   s/.*[:>\/\]]//;       # Trim off dir spec
			   $upcase ? uc($_) : $_;
	                 } split ' ', $self->eliminate_macros($self->{OBJECT});
        my($tmp,@lines,$elt) = '';
	$tmp = shift @omods;
	foreach $elt (@omods) {
	    $tmp .= ",$elt";
		if (length($tmp) > 80) { push @lines, $tmp;  $tmp = ''; }
	}
	push @lines, $tmp;
	push @m, '(', join( qq[, -\\n\\t"";" >>\$(MMS\$TARGET)\n\t\$(PERL) -e "print ""], @lines),')';
    }
	push @m, '\n$(INST_STATIC)/Library\n"";" >>$(MMS$TARGET)',"\n";

    if (length $self->{LDLOADLIBS}) {
	my($lib); my($line) = '';
	foreach $lib (split ' ', $self->{LDLOADLIBS}) {
	    $lib =~ s%\$%\\\$%g;  # Escape '$' in VMS filespecs
	    if (length($line) + length($lib) > 160) {
		push @m, "\t\$(PERL) -e \"print qq{$line}\" >>\$(MMS\$TARGET)\n";
		$line = $lib . '\n';
	    }