src/ActiveDoc/ActiveDoc.pm

#
# ActiveDoc.pm
#
# Originally Written by Christopher Williams
#
# Description
#
# Interface
# ---------
# new(ActiveConfig[,options])           : A new ActiveDoc object
# url()         : Return/set the docs url - essential
# file()        : Return the local filename of document
#
# parse(parselabel): Parse the document file for the given parse level
# newparse(parselabel) : Create a new parse type
# addtag(parselabel,tagname,start,obj,text,obj,end,obj)
#                               : Add tags to the parse given by label
# checktag(tagname, hashref, param) : check for existence of param in
#                                       hashref from a tag call
# includeparse(local_parsename, objparsename, activedoc) : copy the parse from 
#                                                       one object to another
# currentparsename([name]) : get/set current parse name
# getfile(url)  : get a processedfile object given a url
# activatedoc(url) : Return the object ref for a doc described by the given url
#                    -- any parse called "init" will also be run
# config([ActiveConfig]) : Set up/return Configuration for the document
# basequery([ActiveConfig]) : Set up/return UserQuery for the doc
# copydocconfig(ActiveDoc) : Copy the basic configuration from the ActiveDoc
# copydocquery(ActiveDoc) : Copy the basicquery from the ActiveDoc
# userinterface()       : Return the defaullt userinterface
# option(var)           : return the value of the option var
# requestoption("message") : Ask the user to supply a value for an option 
#                            if it dosnt already exist
#
# -- error methods --
# error(string)       : Report an general error to the user
# parseerror(string)  : Report an error during parsing a file
# line()              : Return the current line number of the document
#                       and the ProcessedFileObj it is in

package ActiveDoc::ActiveDoc;
require 5.004;
use ActiveDoc::Parse;
use ActiveDoc::ActiveConfig;
use ActiveDoc::PreProcessedFile;
use ObjectUtilities::StorableObject;
use URL::URLhandler;

@ISA = qw(ObjectUtilities::StorableObject);

sub new {
        my $class=shift;
        $self={};
        bless $self, $class;
        $self->config(shift);

        # have some override options been passed
        if ( @_ ) {
           $self->basequery(shift);
        }
        else {
           # --- is there a starter document?
           my $basedoc=$self->config()->basedoc();
           if ( defined $basedoc ) {
             $self->copydocquery($basedoc);
           }
           else {
             $self->error("ActiveDoc Error : No base doc found");
           }
        }
        $self->_init2();
}

sub _init2 {

        my $self=shift;
        # A URL handler per document
        $self->{urlhandler}=URL::URLhandler->new($self->config()->cache());

        # A default UserInterface
        $self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
        $self->init(@_);
        return $self;

}

# ----- parse related routines --------------
sub parse {
        my $self=shift;
        $parselabel=shift;

        my $file=$self->file();
        if ( $file ) {
          if ( exists $self->{parsers}{$parselabel} ) {
            $self->{currentparsename}=$parselabel;
            $self->{currentparser}=$self->{parsers}{$parselabel};
            $self->{parsers}{$parselabel}->parse($file,@_);
            delete $self->{currentparser};
            $self->{currentparsename}="";
          }
        }
        else {
          print "Cannot parse - file not known\n";
        }
}

sub currentparsename {
        my $self=shift;
        @_?$self->{currentparsename}=shift
          :$self->{currentparsename};
}

sub newparse {
        my $self=shift;
        my $parselabel=shift;

        $self->{parsers}{$parselabel}=ActiveDoc::Parse->new();
        $self->{parsers}{$parselabel}->addignoretags();
        $self->{parsers}{$parselabel}->addgrouptags();
}

sub cleartags {
        my $self=shift;
        my $parselabel=shift;

        $self->{parsers}{$parselabel}->cleartags();
}


sub includeparse {
        my $self=shift;
        my $parselabel=shift;
        my $remoteparselabel=shift;
        my $activedoc=shift;

        # Some error trapping
        if ( ! exists $self->{parsers}{$parselabel} ) {
          $self->error("Unknown local parse name specified");
        }
        if ( ! exists $activedoc->{parsers}{$remoteparselabel} ) {
          $self->error("Unknown parse name specified in remote obj $activedoc");
        }

        #
        my $rp=$activedoc->{parsers}{$remoteparselabel};
        $self->{parsers}{$parselabel}->includeparse($rp);
}

sub addtag {
        my $self=shift;
        my $parselabel=shift;
        if ( $#_ != 6 ) {
                $self->error("Incorrect addtags specification\n".
                                "called with :\n@_ \n");
        }
        $self->{parsers}{$parselabel}->addtag(@_);
}

sub addurltags {
        my $self=shift;
        my $parselabel=shift;
        
        $self->{parsers}{$parselabel}->
                addtag("Base", \&Base_start, $self, "", $self,
                        \&Base_end, $self);
}

sub url {
        my $self=shift;
        # get file & preprocess
        if ( @_  ) {$self->{File}=$self->getfile(shift)} 
        $self->{File}->url();
}

sub copydocconfig {
        my $self=shift;
        my $ActiveDoc=shift;
        
        $self->config($ActiveDoc->config());

}

sub copydocquery {
        my $self=shift;
        my $ActiveDoc=shift;

        if ( defined $ActiveDoc->basequery() ) {
          $self->basequery($ActiveDoc->basequery());
        }
        else {
          $self->error("Cannot copy basequery - undefined");
        }
}

sub config {
        my $self=shift;
        @_?$self->{ActiveConfig}=shift
           : $self->{ActiveConfig};
}

sub basequery {
        my $self=shift;
        @_ ? $self->{Query}=shift
           : $self->{Query};
        return $self->{Query};
}

sub option {
        my $self=shift;
        my $param=shift;
        if ( defined $self->basequery()) {
                return $self->basequery()->getparam($param);
        }
        else {
                return $undef;
        }
}

sub requestoption {
        my $self=shift;
        my $param=shift;
        my $string=shift;

        my $par=undef;
        if ( defined $self->basequery()) {
        $par=$self->basequery()->getparam($param);
        while ( ! defined $par ) {
          $self->basequery()->querytype( $param, "basic");
          $self->basequery()->querymessage( $param, $string);
          $self->userinterface()->askuser($self->basequery());
          $par=$self->basequery()->getparam($param);
        }
        }
        return $par;
}

sub getfile() {
        my $self=shift;
        my $origurl=shift; 

        my $fileref;
        my ($url, $file)=$self->{urlhandler}->get($origurl);
        # do we already have an appropriate object?
        ($fileref)=$self->config()->find($url);
        #undef $fileref;
        if (  defined $fileref ) {
         print "found $url in database ----\n";
         $fileref->update();
        }
        else {
         if ( $file eq "" ) {
           $self->parseerror("Unable to get $origurl");
         }
         #-- set up a new preprocess file
         print "Making a new file $url----\n";
         $fileref=ActiveDoc::PreProcessedFile->new($self->config());
         $fileref->url($url);
         $fileref->update();
        }
        return $fileref;
}

sub activatedoc {
        my $self=shift;
        my $url=shift;

        # first get a preprocessed copy of the file 
#       my $fileob=$self->getfile($url);

        # now parse it for the <DocType> tag
        my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
        $tempdoc->{urlhandler}=$self->{urlhandler};
        my $fullurl=$tempdoc->url($url);
        $url=$fullurl;
        $tempdoc->{doctypefound}=0;
        $tempdoc->newparse("doctype");
        $tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
                                          "", $tempdoc, "", $tempdoc);
        $tempdoc->parse("doctype");

        if ( ! defined $tempdoc->{docobject} ) {
          print "No <Doc type=> Specified in ".$url."\n";
          exit 1;
        }
        # Set up a new object of the specified type
        eval "require $tempdoc->{docobject}";
        die $@ if $@;
        my $newobj=$tempdoc->{docobject}->new($self->config());
        undef $tempdoc;
        $newobj->url($url);
        $newobj->_initparse();
        return $newobj;
}

sub _initparse {
        my $self=shift;

        $self->parse("init");
}
# -------- Error Handling and Error services --------------

sub error {
        my $self=shift;
        my $string=shift;

        die $string."\n";
}

sub parseerror {
        my $self=shift;
        my $string=shift;

        if ( ! defined $self->{currentparse} ) {
                $self->error($string);
        }
        else {
         ($line, $file)=$self->line();
         print "Parse Error in ".$file->url().", line ".
                                        $line."\n";
         print $string."\n";
         die;
        }
}

sub checktag {
        my $self=shift;
        my $tagname=shift;
        my $hashref=shift;
        my $param=shift;

        if ( ! exists $$hashref{$param} ) {
          $self->parseerror("Incomplete Tag <$tagname> : $param required");
        }
}

sub line {
        my $self=shift;

        my ($line, $fileobj)=
                $self->{File}->realline($self->{currentparser}->line());
        return ($line, $fileobj);
}

sub tagstartline {
        my $self=shift;
        my ($line, $fileobj)=$self->{File}->line(
                $self->{currentparser}->tagstartline());
        return ($line, $fileobj);
}

sub file {
        my $self=shift;

        $self->{File}->file();
}

# --------------- Initialisation Methods ---------------------------

sub init {
        # Dummy Routine - override for derived classes
}

# ------------------- Tag Routines -----------------------------------
#
# Base - for setting url bases
#
sub Base_start {
        my $self=shift;
        my $name=shift;
        my $hashref=shift;

        $self->checktag($name, $hashref, 'type' );
        $self->checktag($name, $hashref, 'base' );
       
        # Keep track of base tags
        push @{$self->{basestack}}, $$hashref{"type"};
        # Set the base
        $self->{urlhandler}->setbase($$hashref{"type"},$hashref);
}

sub Base_end {
        my $self=shift;
        my $name=shift;
        my $type;

        if ( $#{$self->{basestack}} == -1 ) {
                $self->parseerror("Parse Error : unmatched </$name>");
        }
        else {
          $type = pop @{$self->{basestack}};
          $self->{urlhandler}->unsetbase($type);
        }
}

sub Doc_Start {
        my $self=shift;
        my $name=shift;
        my $hashref=shift;
        
        $self->checktag($name, $hashref, "type");
        $self->{doctypefound}++;
        if ( $self->{doctypefound} == 1 ) { # only take first doctype
           $self->{docobject}=$$hashref{'type'};
        }
}

sub userinterface {
        my $self=shift;
        @_?$self->{userinterface}=shift
          :$self->{userinterface}
}
Revision:	1.19
Committed:	Thu Jan 27 17:50:38 2000 UTC (25 years, 3 months ago) by williamc
Content type:	text/plain
Branch:	MAIN
Changes since 1.18:	+9 -6 lines
Log Message:	Many mods for BootStrapping
#	User	Rev	Content
1	williamc	1.1	#
2	williamc	1.6	# ActiveDoc.pm
3			#
4			# Originally Written by Christopher Williams
5			#
6			# Description
7	williamc	1.1	#
8			# Interface
9			# ---------
10	williamc	1.15	# new(ActiveConfig[,options]) : A new ActiveDoc object
11	williamc	1.6	# url() : Return/set the docs url - essential
12			# file() : Return the local filename of document
13			#
14			# parse(parselabel): Parse the document file for the given parse level
15			# newparse(parselabel) : Create a new parse type
16			# addtag(parselabel,tagname,start,obj,text,obj,end,obj)
17			# : Add tags to the parse given by label
18	williamc	1.9	# checktag(tagname, hashref, param) : check for existence of param in
19			# hashref from a tag call
20	williamc	1.12	# includeparse(local_parsename, objparsename, activedoc) : copy the parse from
21			# one object to another
22			# currentparsename([name]) : get/set current parse name
23	williamc	1.6	# getfile(url) : get a processedfile object given a url
24	williamc	1.9	# activatedoc(url) : Return the object ref for a doc described by the given url
25	williamc	1.14	# -- any parse called "init" will also be run
26	williamc	1.6	# config([ActiveConfig]) : Set up/return Configuration for the document
27			# basequery([ActiveConfig]) : Set up/return UserQuery for the doc
28			# copydocconfig(ActiveDoc) : Copy the basic configuration from the ActiveDoc
29			# copydocquery(ActiveDoc) : Copy the basicquery from the ActiveDoc
30	williamc	1.10	# userinterface() : Return the defaullt userinterface
31	williamc	1.14	# option(var) : return the value of the option var
32			# requestoption("message") : Ask the user to supply a value for an option
33			# if it dosnt already exist
34	williamc	1.6	#
35			# -- error methods --
36			# error(string) : Report an general error to the user
37			# parseerror(string) : Report an error during parsing a file
38			# line() : Return the current line number of the document
39			# and the ProcessedFileObj it is in
40	williamc	1.2
41			package ActiveDoc::ActiveDoc;
42	williamc	1.6	require 5.004;
43			use ActiveDoc::Parse;
44			use ActiveDoc::ActiveConfig;
45			use ActiveDoc::PreProcessedFile;
46	williamc	1.10	use ObjectUtilities::StorableObject;
47	williamc	1.6	use URL::URLhandler;
48
49	williamc	1.10	@ISA = qw(ObjectUtilities::StorableObject);
50	williamc	1.6
51			sub new {
52			my $class=shift;
53			$self={};
54			bless $self, $class;
55			$self->config(shift);
56	williamc	1.14
57	williamc	1.15	# have some override options been passed
58			if ( @_ ) {
59			$self->basequery(shift);
60	williamc	1.14	}
61			else {
62	williamc	1.15	# --- is there a starter document?
63			my $basedoc=$self->config()->basedoc();
64			if ( defined $basedoc ) {
65			$self->copydocquery($basedoc);
66			}
67			else {
68	williamc	1.19	$self->error("ActiveDoc Error : No base doc found");
69	williamc	1.15	}
70	williamc	1.14	}
71			$self->_init2();
72			}
73
74			sub _init2 {
75
76			my $self=shift;
77	williamc	1.6	# A URL handler per document
78			$self->{urlhandler}=URL::URLhandler->new($self->config()->cache());
79
80	williamc	1.10	# A default UserInterface
81	williamc	1.11	$self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
82	williamc	1.6	$self->init(@_);
83			return $self;
84	williamc	1.14
85	williamc	1.6	}
86
87			# ----- parse related routines --------------
88			sub parse {
89			my $self=shift;
90			$parselabel=shift;
91
92			my $file=$self->file();
93			if ( $file ) {
94	williamc	1.14	if ( exists $self->{parsers}{$parselabel} ) {
95			$self->{currentparsename}=$parselabel;
96			$self->{currentparser}=$self->{parsers}{$parselabel};
97			$self->{parsers}{$parselabel}->parse($file,@_);
98			delete $self->{currentparser};
99			$self->{currentparsename}="";
100			}
101	williamc	1.6	}
102			else {
103			print "Cannot parse - file not known\n";
104			}
105	williamc	1.1	}
106
107	williamc	1.12	sub currentparsename {
108			my $self=shift;
109			@_?$self->{currentparsename}=shift
110			:$self->{currentparsename};
111			}
112
113	williamc	1.6	sub newparse {
114			my $self=shift;
115			my $parselabel=shift;
116
117			$self->{parsers}{$parselabel}=ActiveDoc::Parse->new();
118			$self->{parsers}{$parselabel}->addignoretags();
119			$self->{parsers}{$parselabel}->addgrouptags();
120	williamc	1.12	}
121
122	williamc	1.13	sub cleartags {
123			my $self=shift;
124			my $parselabel=shift;
125
126			$self->{parsers}{$parselabel}->cleartags();
127			}
128
129
130	williamc	1.12	sub includeparse {
131			my $self=shift;
132			my $parselabel=shift;
133			my $remoteparselabel=shift;
134			my $activedoc=shift;
135
136			# Some error trapping
137			if ( ! exists $self->{parsers}{$parselabel} ) {
138			$self->error("Unknown local parse name specified");
139			}
140			if ( ! exists $activedoc->{parsers}{$remoteparselabel} ) {
141			$self->error("Unknown parse name specified in remote obj $activedoc");
142			}
143
144			#
145			my $rp=$activedoc->{parsers}{$remoteparselabel};
146			$self->{parsers}{$parselabel}->includeparse($rp);
147	williamc	1.2	}
148	williamc	1.6
149			sub addtag {
150			my $self=shift;
151			my $parselabel=shift;
152			if ( $#_ != 6 ) {
153			$self->error("Incorrect addtags specification\n".
154			"called with :\n@_ \n");
155	williamc	1.4	}
156	williamc	1.6	$self->{parsers}{$parselabel}->addtag(@_);
157			}
158	williamc	1.2
159	williamc	1.6	sub addurltags {
160			my $self=shift;
161			my $parselabel=shift;
162
163			$self->{parsers}{$parselabel}->
164			addtag("Base", \&Base_start, $self, "", $self,
165			\&Base_end, $self);
166	williamc	1.1	}
167
168	williamc	1.6	sub url {
169	williamc	1.2	my $self=shift;
170	williamc	1.8	# get file & preprocess
171			if ( @_ ) {$self->{File}=$self->getfile(shift)}
172			$self->{File}->url();
173	williamc	1.2	}
174
175	williamc	1.6	sub copydocconfig {
176	williamc	1.1	my $self=shift;
177	williamc	1.6	my $ActiveDoc=shift;
178
179			$self->config($ActiveDoc->config());
180
181	williamc	1.1	}
182
183	williamc	1.6	sub copydocquery {
184			my $self=shift;
185			my $ActiveDoc=shift;
186
187	williamc	1.19	if ( defined $ActiveDoc->basequery() ) {
188			$self->basequery($ActiveDoc->basequery());
189			}
190			else {
191			$self->error("Cannot copy basequery - undefined");
192			}
193	williamc	1.1	}
194
195	williamc	1.6	sub config {
196	williamc	1.1	my $self=shift;
197	williamc	1.6	@_?$self->{ActiveConfig}=shift
198			: $self->{ActiveConfig};
199			}
200	williamc	1.1
201	williamc	1.6	sub basequery {
202			my $self=shift;
203	williamc	1.10	@_ ? $self->{Query}=shift
204			: $self->{Query};
205	williamc	1.19	return $self->{Query};
206	williamc	1.10	}
207
208	williamc	1.14	sub option {
209	williamc	1.10	my $self=shift;
210			my $param=shift;
211	williamc	1.15	if ( defined $self->basequery()) {
212			return $self->basequery()->getparam($param);
213			}
214			else {
215			return $undef;
216			}
217	williamc	1.14	}
218
219			sub requestoption {
220			my $self=shift;
221			my $param=shift;
222			my $string=shift;
223
224	williamc	1.15	my $par=undef;
225			if ( defined $self->basequery()) {
226			$par=$self->basequery()->getparam($param);
227	williamc	1.14	while ( ! defined $par ) {
228			$self->basequery()->querytype( $param, "basic");
229			$self->basequery()->querymessage( $param, $string);
230			$self->userinterface()->askuser($self->basequery());
231	williamc	1.15	$par=$self->basequery()->getparam($param);
232	williamc	1.14	}
233	williamc	1.15	}
234	williamc	1.14	return $par;
235	williamc	1.2	}
236
237	williamc	1.6	sub getfile() {
238	williamc	1.3	my $self=shift;
239	williamc	1.6	my $origurl=shift;
240
241			my $fileref;
242			my ($url, $file)=$self->{urlhandler}->get($origurl);
243			# do we already have an appropriate object?
244	williamc	1.7	($fileref)=$self->config()->find($url);
245			#undef $fileref;
246	williamc	1.6	if ( defined $fileref ) {
247			print "found $url in database ----\n";
248			$fileref->update();
249			}
250			else {
251			if ( $file eq "" ) {
252			$self->parseerror("Unable to get $origurl");
253			}
254			#-- set up a new preprocess file
255			print "Making a new file $url----\n";
256			$fileref=ActiveDoc::PreProcessedFile->new($self->config());
257			$fileref->url($url);
258			$fileref->update();
259			}
260			return $fileref;
261	williamc	1.3	}
262
263	williamc	1.9	sub activatedoc {
264			my $self=shift;
265			my $url=shift;
266
267			# first get a preprocessed copy of the file
268	williamc	1.14	# my $fileob=$self->getfile($url);
269	williamc	1.9
270			# now parse it for the <DocType> tag
271	williamc	1.14	my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
272	williamc	1.16	$tempdoc->{urlhandler}=$self->{urlhandler};
273	williamc	1.17	my $fullurl=$tempdoc->url($url);
274			$url=$fullurl;
275	williamc	1.14	$tempdoc->{doctypefound}=0;
276			$tempdoc->newparse("doctype");
277			$tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
278			"", $tempdoc, "", $tempdoc);
279			$tempdoc->parse("doctype");
280	williamc	1.9
281	williamc	1.14	if ( ! defined $tempdoc->{docobject} ) {
282			print "No <Doc type=> Specified in ".$url."\n";
283	williamc	1.9	exit 1;
284			}
285			# Set up a new object of the specified type
286	williamc	1.14	eval "require $tempdoc->{docobject}";
287			die $@ if $@;
288			my $newobj=$tempdoc->{docobject}->new($self->config());
289			undef $tempdoc;
290	williamc	1.10	$newobj->url($url);
291	williamc	1.14	$newobj->_initparse();
292	williamc	1.9	return $newobj;
293			}
294
295	williamc	1.14	sub _initparse {
296			my $self=shift;
297
298			$self->parse("init");
299			}
300	williamc	1.6	# -------- Error Handling and Error services --------------
301
302	williamc	1.3	sub error {
303	williamc	1.6	my $self=shift;
304			my $string=shift;
305
306			die $string."\n";
307			}
308
309			sub parseerror {
310			my $self=shift;
311			my $string=shift;
312
313	williamc	1.18	if ( ! defined $self->{currentparse} ) {
314			$self->error($string);
315			}
316			else {
317			($line, $file)=$self->line();
318			print "Parse Error in ".$file->url().", line ".
319	williamc	1.6	$line."\n";
320	williamc	1.18	print $string."\n";
321			die;
322			}
323	williamc	1.6	}
324
325			sub checktag {
326			my $self=shift;
327			my $tagname=shift;
328			my $hashref=shift;
329			my $param=shift;
330	williamc	1.3
331	williamc	1.6	if ( ! exists $$hashref{$param} ) {
332			$self->parseerror("Incomplete Tag <$tagname> : $param required");
333			}
334			}
335	williamc	1.3
336	williamc	1.6	sub line {
337	williamc	1.7	my $self=shift;
338	williamc	1.9
339	williamc	1.6	my ($line, $fileobj)=
340	williamc	1.9	$self->{File}->realline($self->{currentparser}->line());
341	williamc	1.6	return ($line, $fileobj);
342	williamc	1.7	}
343
344			sub tagstartline {
345			my $self=shift;
346	williamc	1.8	my ($line, $fileobj)=$self->{File}->line(
347	williamc	1.7	$self->{currentparser}->tagstartline());
348			return ($line, $fileobj);
349	williamc	1.3	}
350	williamc	1.6
351			sub file {
352	williamc	1.2	my $self=shift;
353
354	williamc	1.8	$self->{File}->file();
355	williamc	1.2	}
356
357	williamc	1.6	# --------------- Initialisation Methods ---------------------------
358	williamc	1.2
359	williamc	1.6	sub init {
360			# Dummy Routine - override for derived classes
361	williamc	1.1	}
362
363	williamc	1.6	# ------------------- Tag Routines -----------------------------------
364	williamc	1.1	#
365	williamc	1.6	# Base - for setting url bases
366	williamc	1.1	#
367	williamc	1.6	sub Base_start {
368			my $self=shift;
369			my $name=shift;
370			my $hashref=shift;
371	williamc	1.2
372	williamc	1.6	$self->checktag($name, $hashref, 'type' );
373			$self->checktag($name, $hashref, 'base' );
374
375			# Keep track of base tags
376			push @{$self->{basestack}}, $$hashref{"type"};
377			# Set the base
378			$self->{urlhandler}->setbase($$hashref{"type"},$hashref);
379	williamc	1.1	}
380
381	williamc	1.6	sub Base_end {
382			my $self=shift;
383	williamc	1.1	my $name=shift;
384	williamc	1.6	my $type;
385	williamc	1.1
386	williamc	1.6	if ( $#{$self->{basestack}} == -1 ) {
387	williamc	1.19	$self->parseerror("Parse Error : unmatched </$name>");
388	williamc	1.6	}
389			else {
390			$type = pop @{$self->{basestack}};
391			$self->{urlhandler}->unsetbase($type);
392			}
393	williamc	1.9	}
394
395			sub Doc_Start {
396			my $self=shift;
397			my $name=shift;
398			my $hashref=shift;
399
400			$self->checktag($name, $hashref, "type");
401	williamc	1.10	$self->{doctypefound}++;
402			if ( $self->{doctypefound} == 1 ) { # only take first doctype
403			$self->{docobject}=$$hashref{'type'};
404			}
405			}
406
407			sub userinterface {
408			my $self=shift;
409			@_?$self->{userinterface}=shift
410			:$self->{userinterface}
411	williamc	1.1	}