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 ( or undef )
# requestoption("message") : Ask the user to supply a value for an option 
#                            if it dosnt already exist
# askuser(Query)        : send a query object to the userinterface
# verbose(string)       : Print string in verbosity mode
#
# -- 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->verbose("Initialising from $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;

}

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

        if ( $self->option('verbose_all') || 
                        $self->option('verbose_'.ref($self)) ) {
          print ">".ref($self)." : ".$string."\n";
        }
}

# ----- 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 askuser {
        my $self=shift;
        return $self->userinterface()->askuser(@_);
}

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

        my $fileref;
        my ($url, $file);
        if ( defined $self->option('url_update') ) {
           $self->verbose("Forced download of $origurl");
           ($url, $file)=$self->{urlhandler}->download($origurl);
        }
        else {
           ($url, $file)=$self->{urlhandler}->get($origurl);
        }
        # do we already have an appropriate object?
        ($fileref)=$self->config()->find($url);
        #undef $fileref;
        if (  defined $fileref ) {
         $self->verbose("Found $url in database");
         $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 ( $self->currentparsename() eq "" ) {
                $self->error($string);
        }
        else {
         ($line, $file)=$self->line();
         print "Parse Error in ".$file->url().", line ".
                                        $line."\n";
         print $string."\n";
         exit;
        }
}

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:	1.20
Committed:	Fri Feb 11 14:55:22 2000 UTC (25 years, 3 months ago) by williamc
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+30 -5 lines
Log Message:	Add verbose function
#	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	1.20	# option(var) : return the value of the option var ( or undef )
32	williamc	1.14	# requestoption("message") : Ask the user to supply a value for an option
33			# if it dosnt already exist
34	williamc	1.20	# askuser(Query) : send a query object to the userinterface
35			# verbose(string) : Print string in verbosity mode
36	williamc	1.6	#
37			# -- error methods --
38			# error(string) : Report an general error to the user
39			# parseerror(string) : Report an error during parsing a file
40			# line() : Return the current line number of the document
41			# and the ProcessedFileObj it is in
42	williamc	1.2
43			package ActiveDoc::ActiveDoc;
44	williamc	1.6	require 5.004;
45			use ActiveDoc::Parse;
46			use ActiveDoc::ActiveConfig;
47			use ActiveDoc::PreProcessedFile;
48	williamc	1.10	use ObjectUtilities::StorableObject;
49	williamc	1.6	use URL::URLhandler;
50
51	williamc	1.10	@ISA = qw(ObjectUtilities::StorableObject);
52	williamc	1.6
53			sub new {
54			my $class=shift;
55			$self={};
56			bless $self, $class;
57			$self->config(shift);
58	williamc	1.14
59	williamc	1.15	# have some override options been passed
60			if ( @_ ) {
61			$self->basequery(shift);
62	williamc	1.14	}
63			else {
64	williamc	1.15	# --- is there a starter document?
65			my $basedoc=$self->config()->basedoc();
66			if ( defined $basedoc ) {
67	williamc	1.20	$self->verbose("Initialising from $basedoc");
68	williamc	1.15	$self->copydocquery($basedoc);
69			}
70			else {
71	williamc	1.19	$self->error("ActiveDoc Error : No base doc found");
72	williamc	1.15	}
73	williamc	1.14	}
74			$self->_init2();
75			}
76
77			sub _init2 {
78
79			my $self=shift;
80	williamc	1.6	# A URL handler per document
81			$self->{urlhandler}=URL::URLhandler->new($self->config()->cache());
82
83	williamc	1.10	# A default UserInterface
84	williamc	1.11	$self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
85	williamc	1.6	$self->init(@_);
86			return $self;
87	williamc	1.14
88	williamc	1.6	}
89
90	williamc	1.20	sub verbose {
91			my $self=shift;
92			my $string=shift;
93
94			if ( $self->option('verbose_all') \|\|
95			$self->option('verbose_'.ref($self)) ) {
96			print ">".ref($self)." : ".$string."\n";
97			}
98			}
99
100	williamc	1.6	# ----- parse related routines --------------
101			sub parse {
102			my $self=shift;
103			$parselabel=shift;
104
105			my $file=$self->file();
106			if ( $file ) {
107	williamc	1.14	if ( exists $self->{parsers}{$parselabel} ) {
108			$self->{currentparsename}=$parselabel;
109			$self->{currentparser}=$self->{parsers}{$parselabel};
110			$self->{parsers}{$parselabel}->parse($file,@_);
111			delete $self->{currentparser};
112			$self->{currentparsename}="";
113			}
114	williamc	1.6	}
115			else {
116			print "Cannot parse - file not known\n";
117			}
118	williamc	1.1	}
119
120	williamc	1.12	sub currentparsename {
121			my $self=shift;
122			@_?$self->{currentparsename}=shift
123			:$self->{currentparsename};
124			}
125
126	williamc	1.6	sub newparse {
127			my $self=shift;
128			my $parselabel=shift;
129
130			$self->{parsers}{$parselabel}=ActiveDoc::Parse->new();
131			$self->{parsers}{$parselabel}->addignoretags();
132			$self->{parsers}{$parselabel}->addgrouptags();
133	williamc	1.12	}
134
135	williamc	1.13	sub cleartags {
136			my $self=shift;
137			my $parselabel=shift;
138
139			$self->{parsers}{$parselabel}->cleartags();
140			}
141
142
143	williamc	1.12	sub includeparse {
144			my $self=shift;
145			my $parselabel=shift;
146			my $remoteparselabel=shift;
147			my $activedoc=shift;
148
149			# Some error trapping
150			if ( ! exists $self->{parsers}{$parselabel} ) {
151			$self->error("Unknown local parse name specified");
152			}
153			if ( ! exists $activedoc->{parsers}{$remoteparselabel} ) {
154			$self->error("Unknown parse name specified in remote obj $activedoc");
155			}
156
157			#
158			my $rp=$activedoc->{parsers}{$remoteparselabel};
159			$self->{parsers}{$parselabel}->includeparse($rp);
160	williamc	1.2	}
161	williamc	1.6
162			sub addtag {
163			my $self=shift;
164			my $parselabel=shift;
165			if ( $#_ != 6 ) {
166			$self->error("Incorrect addtags specification\n".
167			"called with :\n@_ \n");
168	williamc	1.4	}
169	williamc	1.6	$self->{parsers}{$parselabel}->addtag(@_);
170			}
171	williamc	1.2
172	williamc	1.6	sub addurltags {
173			my $self=shift;
174			my $parselabel=shift;
175
176			$self->{parsers}{$parselabel}->
177			addtag("Base", \&Base_start, $self, "", $self,
178			\&Base_end, $self);
179	williamc	1.1	}
180
181	williamc	1.6	sub url {
182	williamc	1.2	my $self=shift;
183	williamc	1.8	# get file & preprocess
184			if ( @_ ) {$self->{File}=$self->getfile(shift)}
185			$self->{File}->url();
186	williamc	1.2	}
187
188	williamc	1.6	sub copydocconfig {
189	williamc	1.1	my $self=shift;
190	williamc	1.6	my $ActiveDoc=shift;
191
192			$self->config($ActiveDoc->config());
193
194	williamc	1.1	}
195
196	williamc	1.6	sub copydocquery {
197			my $self=shift;
198			my $ActiveDoc=shift;
199
200	williamc	1.19	if ( defined $ActiveDoc->basequery() ) {
201			$self->basequery($ActiveDoc->basequery());
202			}
203			else {
204			$self->error("Cannot copy basequery - undefined");
205			}
206	williamc	1.1	}
207
208	williamc	1.6	sub config {
209	williamc	1.1	my $self=shift;
210	williamc	1.6	@_?$self->{ActiveConfig}=shift
211			: $self->{ActiveConfig};
212			}
213	williamc	1.1
214	williamc	1.6	sub basequery {
215			my $self=shift;
216	williamc	1.10	@_ ? $self->{Query}=shift
217			: $self->{Query};
218	williamc	1.19	return $self->{Query};
219	williamc	1.10	}
220
221	williamc	1.14	sub option {
222	williamc	1.10	my $self=shift;
223			my $param=shift;
224	williamc	1.15	if ( defined $self->basequery()) {
225			return $self->basequery()->getparam($param);
226			}
227			else {
228			return $undef;
229			}
230	williamc	1.14	}
231
232			sub requestoption {
233			my $self=shift;
234			my $param=shift;
235			my $string=shift;
236
237	williamc	1.15	my $par=undef;
238			if ( defined $self->basequery()) {
239			$par=$self->basequery()->getparam($param);
240	williamc	1.14	while ( ! defined $par ) {
241			$self->basequery()->querytype( $param, "basic");
242			$self->basequery()->querymessage( $param, $string);
243			$self->userinterface()->askuser($self->basequery());
244	williamc	1.15	$par=$self->basequery()->getparam($param);
245	williamc	1.14	}
246	williamc	1.15	}
247	williamc	1.14	return $par;
248	williamc	1.2	}
249
250	williamc	1.20	sub askuser {
251			my $self=shift;
252			return $self->userinterface()->askuser(@_);
253			}
254
255	williamc	1.6	sub getfile() {
256	williamc	1.3	my $self=shift;
257	williamc	1.6	my $origurl=shift;
258
259			my $fileref;
260	williamc	1.20	my ($url, $file);
261			if ( defined $self->option('url_update') ) {
262			$self->verbose("Forced download of $origurl");
263			($url, $file)=$self->{urlhandler}->download($origurl);
264			}
265			else {
266			($url, $file)=$self->{urlhandler}->get($origurl);
267			}
268	williamc	1.6	# do we already have an appropriate object?
269	williamc	1.7	($fileref)=$self->config()->find($url);
270			#undef $fileref;
271	williamc	1.6	if ( defined $fileref ) {
272	williamc	1.20	$self->verbose("Found $url in database");
273	williamc	1.6	$fileref->update();
274			}
275			else {
276			if ( $file eq "" ) {
277			$self->parseerror("Unable to get $origurl");
278			}
279			#-- set up a new preprocess file
280			print "Making a new file $url----\n";
281			$fileref=ActiveDoc::PreProcessedFile->new($self->config());
282			$fileref->url($url);
283			$fileref->update();
284			}
285			return $fileref;
286	williamc	1.3	}
287
288	williamc	1.9	sub activatedoc {
289			my $self=shift;
290			my $url=shift;
291
292			# first get a preprocessed copy of the file
293	williamc	1.14	# my $fileob=$self->getfile($url);
294	williamc	1.9
295			# now parse it for the <DocType> tag
296	williamc	1.14	my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
297	williamc	1.16	$tempdoc->{urlhandler}=$self->{urlhandler};
298	williamc	1.17	my $fullurl=$tempdoc->url($url);
299			$url=$fullurl;
300	williamc	1.14	$tempdoc->{doctypefound}=0;
301			$tempdoc->newparse("doctype");
302			$tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
303			"", $tempdoc, "", $tempdoc);
304			$tempdoc->parse("doctype");
305	williamc	1.9
306	williamc	1.14	if ( ! defined $tempdoc->{docobject} ) {
307			print "No <Doc type=> Specified in ".$url."\n";
308	williamc	1.9	exit 1;
309			}
310			# Set up a new object of the specified type
311	williamc	1.14	eval "require $tempdoc->{docobject}";
312			die $@ if $@;
313			my $newobj=$tempdoc->{docobject}->new($self->config());
314			undef $tempdoc;
315	williamc	1.10	$newobj->url($url);
316	williamc	1.14	$newobj->_initparse();
317	williamc	1.9	return $newobj;
318			}
319
320	williamc	1.14	sub _initparse {
321			my $self=shift;
322
323			$self->parse("init");
324			}
325	williamc	1.6	# -------- Error Handling and Error services --------------
326
327	williamc	1.3	sub error {
328	williamc	1.6	my $self=shift;
329			my $string=shift;
330
331			die $string."\n";
332			}
333
334			sub parseerror {
335			my $self=shift;
336			my $string=shift;
337
338	williamc	1.20	if ( $self->currentparsename() eq "" ) {
339	williamc	1.18	$self->error($string);
340			}
341			else {
342			($line, $file)=$self->line();
343			print "Parse Error in ".$file->url().", line ".
344	williamc	1.6	$line."\n";
345	williamc	1.18	print $string."\n";
346	williamc	1.20	exit;
347	williamc	1.18	}
348	williamc	1.6	}
349
350			sub checktag {
351			my $self=shift;
352			my $tagname=shift;
353			my $hashref=shift;
354			my $param=shift;
355	williamc	1.3
356	williamc	1.6	if ( ! exists $$hashref{$param} ) {
357			$self->parseerror("Incomplete Tag <$tagname> : $param required");
358			}
359			}
360	williamc	1.3
361	williamc	1.6	sub line {
362	williamc	1.7	my $self=shift;
363	williamc	1.9
364	williamc	1.6	my ($line, $fileobj)=
365	williamc	1.9	$self->{File}->realline($self->{currentparser}->line());
366	williamc	1.6	return ($line, $fileobj);
367	williamc	1.7	}
368
369			sub tagstartline {
370			my $self=shift;
371	williamc	1.8	my ($line, $fileobj)=$self->{File}->line(
372	williamc	1.7	$self->{currentparser}->tagstartline());
373			return ($line, $fileobj);
374	williamc	1.3	}
375	williamc	1.6
376			sub file {
377	williamc	1.2	my $self=shift;
378
379	williamc	1.8	$self->{File}->file();
380	williamc	1.2	}
381
382	williamc	1.6	# --------------- Initialisation Methods ---------------------------
383	williamc	1.2
384	williamc	1.6	sub init {
385			# Dummy Routine - override for derived classes
386	williamc	1.1	}
387
388	williamc	1.6	# ------------------- Tag Routines -----------------------------------
389	williamc	1.1	#
390	williamc	1.6	# Base - for setting url bases
391	williamc	1.1	#
392	williamc	1.6	sub Base_start {
393			my $self=shift;
394			my $name=shift;
395			my $hashref=shift;
396	williamc	1.2
397	williamc	1.6	$self->checktag($name, $hashref, 'type' );
398			$self->checktag($name, $hashref, 'base' );
399
400			# Keep track of base tags
401			push @{$self->{basestack}}, $$hashref{"type"};
402			# Set the base
403			$self->{urlhandler}->setbase($$hashref{"type"},$hashref);
404	williamc	1.1	}
405
406	williamc	1.6	sub Base_end {
407			my $self=shift;
408	williamc	1.1	my $name=shift;
409	williamc	1.6	my $type;
410	williamc	1.1
411	williamc	1.6	if ( $#{$self->{basestack}} == -1 ) {
412	williamc	1.19	$self->parseerror("Parse Error : unmatched </$name>");
413	williamc	1.6	}
414			else {
415			$type = pop @{$self->{basestack}};
416			$self->{urlhandler}->unsetbase($type);
417			}
418	williamc	1.9	}
419
420			sub Doc_Start {
421			my $self=shift;
422			my $name=shift;
423			my $hashref=shift;
424
425			$self->checktag($name, $hashref, "type");
426	williamc	1.10	$self->{doctypefound}++;
427			if ( $self->{doctypefound} == 1 ) { # only take first doctype
428			$self->{docobject}=$$hashref{'type'};
429			}
430			}
431
432			sub userinterface {
433			my $self=shift;
434			@_?$self->{userinterface}=shift
435			:$self->{userinterface}
436	williamc	1.1	}