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Lite.pm
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2002-07-08
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package Win32::OLE;
sub _croak { require Carp; Carp::croak(@_) }
unless (defined &Dispatch) {
DynaLoader::boot_DynaLoader('DynaLoader')
unless defined(&DynaLoader::dl_load_file);
my $file;
foreach my $dir (@INC) {
my $try = "$dir/auto/Win32/OLE/OLE.dll";
last if $file = (-f $try && $try);
}
_croak("Can't locate loadable object for module Win32::OLE".
" in \@INC (\@INC contains: @INC)")
unless $file; # wording similar to error from 'require'
my $libref = DynaLoader::dl_load_file($file, 0) or
_croak("Can't load '$file' for module Win32::OLE: ".
DynaLoader::dl_error()."\n");
my $boot_symbol_ref = DynaLoader::dl_find_symbol($libref, "boot_Win32__OLE")
or _croak("Can't find 'boot_Win32__OLE' symbol in $file\n");
my $xs = DynaLoader::dl_install_xsub("Win32::OLE::bootstrap",
$boot_symbol_ref, $file);
&$xs('Win32::OLE');
}
if (defined &DB::sub && !defined $_Unique) {
warn "Win32::OLE operating in debugging mode: _Unique => 1\n";
$_Unique = 1;
}
$Warn = 1;
sub CP_ACP {0;} # ANSI codepage
sub CP_OEMCP {1;} # OEM codepage
sub CP_MACCP {2;}
sub CP_UTF7 {65000;}
sub CP_UTF8 {65001;}
sub DISPATCH_METHOD {1;}
sub DISPATCH_PROPERTYGET {2;}
sub DISPATCH_PROPERTYPUT {4;}
sub DISPATCH_PROPERTYPUTREF {8;}
sub COINIT_MULTITHREADED {0;} # Default
sub COINIT_APARTMENTTHREADED {2;} # Use single threaded apartment model
# Bogus COINIT_* values to indicate special cases:
sub COINIT_OLEINITIALIZE {-1;} # Use OleInitialize instead of CoInitializeEx
sub COINIT_NO_INITIALIZE {-2;} # We are already initialized, just believe me
sub HRESULT {
my $hr = shift;
$hr -= 2**32 if $hr & 0x80000000;
return $hr;
}
# CreateObject is defined here only because it is documented in the
# "Learning Perl on Win32 Systems" Gecko book. Please use Win32::OLE->new().
sub CreateObject {
if (ref($_[0]) && UNIVERSAL::isa($_[0],'Win32::OLE')) {
$AUTOLOAD = 'CreateObject';
goto &AUTOLOAD;
}
# Hack to allow C<$obj = CreateObject Win32::OLE 'My.App';>. Although this
# is contrary to the Gecko, we just make it work since it doesn't hurt.
return Win32::OLE->new($_[1]) if $_[0] eq 'Win32::OLE';
# Gecko form: C<$success = Win32::OLE::CreateObject('My.App',$obj);>
$_[1] = Win32::OLE->new($_[0]);
return defined $_[1];
}
sub LastError {
unless (defined $_[0]) {
# Win32::OLE::LastError() will always return $Win32::OLE::LastError
return $LastError;
}
if (ref($_[0]) && UNIVERSAL::isa($_[0],'Win32::OLE')) {
$AUTOLOAD = 'LastError';
goto &AUTOLOAD;
}
#no strict 'refs';
my $LastError = "$_[0]::LastError";
$$LastError = $_[1] if defined $_[1];
return $$LastError;
}
my $Options = "^(?:CP|LCID|Warn|_NewEnum|_Unique)\$";
sub Option {
if (ref($_[0]) && UNIVERSAL::isa($_[0],'Win32::OLE')) {
$AUTOLOAD = 'Option';
goto &AUTOLOAD;
}
my $class = shift;
if (@_ == 1) {
my $option = shift;
return ${"${class}::$option"} if $option =~ /$Options/o;
_croak("Invalid $class option: $option");
}
while (@_) {
my ($option,$value) = splice @_, 0, 2;
_croak("Invalid $class option: $option") if $option !~ /$Options/o;
${"${class}::$option"} = $value;
$class->_Unique() if $option eq "_Unique";
}
}
sub Invoke {
my ($self,$method,@args) = @_;
$self->Dispatch($method, my $retval, @args);
return $retval;
}
sub LetProperty {
my ($self,$method,@args) = @_;
$self->Dispatch([DISPATCH_PROPERTYPUT, $method], my $retval, @args);
return $retval;
}
sub SetProperty {
my ($self,$method,@args) = @_;
my $wFlags = DISPATCH_PROPERTYPUT;
if (@args) {
# If the value is an object then it will be set by reference!
my $value = $args[-1];
if (UNIVERSAL::isa($value, 'Win32::OLE')) {
$wFlags = DISPATCH_PROPERTYPUTREF;
}
elsif (UNIVERSAL::isa($value,'Win32::OLE::Variant')) {
my $type = $value->Type & ~0xfff; # VT_TYPEMASK
# VT_DISPATCH and VT_UNKNOWN represent COM objects
$wFlags = DISPATCH_PROPERTYPUTREF if $type == 9 || $type == 13;
}
}
$self->Dispatch([$wFlags, $method], my $retval, @args);
return $retval;
}
sub AUTOLOAD {
my $self = shift;
$AUTOLOAD = substr $AUTOLOAD, rindex($AUTOLOAD, ':')+1;
_croak("Cannot autoload class method \"$AUTOLOAD\"")
unless ref($self) && UNIVERSAL::isa($self, 'Win32::OLE');
my $success = $self->Dispatch($AUTOLOAD, my $retval, @_);
unless (defined $success || ($^H & 0x200) != 0) {
# Retry default method if C<no strict 'subs';>
$self->Dispatch(undef, $retval, $AUTOLOAD, @_);
}
return $retval;
}
sub in {
my @res;
while (@_) {
my $this = shift;
if (UNIVERSAL::isa($this, 'Win32::OLE')) {
push @res, Win32::OLE::Enum->All($this);
}
elsif (ref($this) eq 'ARRAY') {
push @res, @$this;
}
else {
push @res, $this;
}
}
return @res;
}
sub valof {
my $arg = shift;
if (UNIVERSAL::isa($arg, 'Win32::OLE')) {
require Win32::OLE::Variant;
my ($class) = overload::StrVal($arg) =~ /^([^=]+)=/;
#no strict 'refs';
local $Win32::OLE::CP = ${"${class}::CP"};
local $Win32::OLE::LCID = ${"${class}::LCID"};
#use strict 'refs';
# VT_EMPTY variant for return code
my $variant = Win32::OLE::Variant->new;
$arg->Dispatch(undef, $variant);
return $variant->Value;
}
$arg = $arg->Value if UNIVERSAL::can($arg, 'Value');
return $arg;
}
sub with {
my $object = shift;
while (@_) {
my $property = shift;
$object->{$property} = shift;
}
}
########################################################################
package Win32::OLE::Tie;
# Only retry default method under C<no strict 'subs';>
sub FETCH {
my ($self,$key) = @_;
if ($key eq "_NewEnum") {
(my $class = ref $self) =~ s/::Tie$//;
return [Win32::OLE::Enum->All($self)] if ${"${class}::_NewEnum"};
}
$self->Fetch($key, !$Win32::OLE::Strict);
}
sub STORE {
my ($self,$key,$value) = @_;
$self->Store($key, $value, !$Win32::OLE::Strict);
}
1;