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Comparing COMP/SCRAM/src/ActiveDoc/ActiveDoc.pm (file contents):
Revision 1.2 by williamc, Mon Sep 20 16:27:57 1999 UTC vs.
Revision 1.11 by williamc, Fri Dec 17 15:29:01 1999 UTC

#	Line 1 | Line 1
1		#
2	<	# The base functionality for the ActiveDocument - inherits from Basetags
2	>	# ActiveDoc.pm
3	>	#
4	>	# Originally Written by Christopher Williams
5	>	#
6	>	# Description
7		#
4	–	# Inherits from BaseTags
5	–	# --------
8		# Interface
9		# ---------
10	<	# new(filename, DOChandler): create a new object based on a file and
11	<	#                                 associate with a base DOChandler
12	<	# parse()                       : parse the input file
13	<	# include(url) : Activate include file mechanism, returns the object ref if OK
14	<	# treenode()   : return the associated TreeNode object reference
15	<	# getincludeObjectStore : Return a pointer to the ObectStore that contains all
16	<	#                         included objects
17	<	# find(string)  : find the object reference related to string in the associated
18	<	#                 tree. Mechanism for getting object references
19	<	# _addgroup()   : Add group functionality to document
20	<	# parseerror(String) : Report an error to the user
21	<	# userinterface()       : return the default User Interface object
22	<	# checktag($hashref, param , tagname) : Check a hash returned from switcher
23	<	#                                       for a given parameter
10	>	# new()         : A new ActiveDoc object
11	>	# 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	>	# checktag(tagname, hashref, param) : check for existence of param in
19	>	#                                       hashref from a tag call
20	>	# newdoc(file)  : Return an new object of the appropriate type
21	>	# getfile(url)  : get a processedfile object given a url
22	>	# activatedoc(url) : Return the object ref for a doc described by the given url
23	>	# config([ActiveConfig]) : Set up/return Configuration for the document
24	>	# basequery([ActiveConfig]) : Set up/return UserQuery for the doc
25	>	# copydocconfig(ActiveDoc) : Copy the basic configuration from the ActiveDoc
26	>	# copydocquery(ActiveDoc) : Copy the basicquery from the ActiveDoc
27	>	# userinterface()       : Return the defaullt userinterface
28	>	# options(var)          : return the value of the option var
29	>	#
30	>	# -- error methods --
31	>	# error(string)       : Report an general error to the user
32	>	# parseerror(string)  : Report an error during parsing a file
33	>	# line()              : Return the current line number of the document
34	>	#                       and the ProcessedFileObj it is in
35
36		package ActiveDoc::ActiveDoc;
37	<	require 5.001;
38	<	use ActiveDoc::DOChandler;
39	<	use ActiveDoc::TreeNode;
40	<	use ActiveDoc::UserQuery;
41	<	use ObjectStoreCont;
42	<
43	<	@ISA = qw(BaseTags);
44	<
45	<	# Initialise
46	<	sub _init {
47	<	my $self=shift;
48	<	my $DOChandler=shift;
49	<	my $OC=shift;
50	<
51	<	$self->_addurl();
52	<	$self->{urlhandler}->setcache($DOChandler->defaultcache());
53	<	$self->{treenode}=ActiveDoc::TreeNode->new();
54	<	$self->{dochandler}=$DOChandler;
55	<	$self->{UserQuery}=$DOChandler->{UserQuery};
56	<	$self->{tags}->addtag("Use", \&Use_Start, "", "");
57	<	# Add the minimal functionality tag - feel free to override
58	<	$self->{tags}->addtag("Include", \&Include_Start, "", "");
46	<	$self->init();
37	>	require 5.004;
38	>	use ActiveDoc::Parse;
39	>	use ActiveDoc::ActiveConfig;
40	>	use ActiveDoc::PreProcessedFile;
41	>	use ObjectUtilities::StorableObject;
42	>	use URL::URLhandler;
43	>
44	>	@ISA = qw(ObjectUtilities::StorableObject);
45	>
46	>	sub new {
47	>	my $class=shift;
48	>	$self={};
49	>	bless $self, $class;
50	>	$self->config(shift);
51	>
52	>	# A URL handler per document
53	>	$self->{urlhandler}=URL::URLhandler->new($self->config()->cache());
54	>
55	>	# A default UserInterface
56	>	$self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
57	>	$self->init(@_);
58	>	return $self;
59		}
60
61	<	sub init {
62	<	# Dummy Routine - override for derrived classes
61	>	# ----- parse related routines --------------
62	>	sub parse {
63	>	my $self=shift;
64	>	$parselabel=shift;
65	>
66	>	my $file=$self->file();
67	>	if ( $file ) {
68	>	$self->{currentparser}=$self->{parsers}{$parselabel};
69	>	$self->{parsers}{$parselabel}->parse($file,@_);
70	>	delete $self->{currentparser};
71	>	}
72	>	else {
73	>	print "Cannot parse - file not known\n";
74	>	}
75		}
76	<	#
77	<	# use mechanism
78	<	#
79	<	sub include {
80	<	my $self=shift;
81	<	my $url=shift;
82	<	my $linkfile=shift;
83	<	my $filename;
60	<	my $obj;
61	<
62	<	$file=$self->{urlhandler}->get($url);
63	<	if ( $linkfile ne "" ) {
64	<	$filename=$file."/".$linkfile;
65	<	}
66	<	$obj=$self->{dochandler}->newdoc($filename);
67	<
68	<	# Now Extend our tree
69	<	$self->{treenode}->grow($obj->treenode());
70	<	return $obj;
76	>
77	>	sub newparse {
78	>	my $self=shift;
79	>	my $parselabel=shift;
80	>
81	>	$self->{parsers}{$parselabel}=ActiveDoc::Parse->new();
82	>	$self->{parsers}{$parselabel}->addignoretags();
83	>	$self->{parsers}{$parselabel}->addgrouptags();
84		}
85
86	<	sub userinterface {
86	>	sub addtag {
87		my $self=shift;
88	<	return $self->{dochandler}->{UserInterface};
88	>	my $parselabel=shift;
89	>	if ( $#_ != 6 ) {
90	>	$self->error("Incorrect addtags specification\n".
91	>	"called with :\n@_ \n");
92	>	}
93	>	$self->{parsers}{$parselabel}->addtag(@_);
94		}
95
96	<	sub treenode {
96	>	sub addurltags {
97		my $self=shift;
98	<	return $self->{treenode};
98	>	my $parselabel=shift;
99	>
100	>	$self->{parsers}{$parselabel}->
101	>	addtag("Base", \&Base_start, $self, "", $self,
102	>	\&Base_end, $self);
103		}
104
105	<	sub getincludeObjectStore {
106	<	my $self=shift;
107	<	return $self->{includeOS};
105	>	sub url {
106	>	my $self=shift;
107	>	# get file & preprocess
108	>	if ( @_  ) {$self->{File}=$self->getfile(shift)}
109	>	$self->{File}->url();
110		}
111
112	<	sub find($) {
112	>	sub copydocconfig {
113		my $self=shift;
114	<	my $string=shift;
115	<	my $tn;
114	>	my $ActiveDoc=shift;
115	>
116	>	$self->config($ActiveDoc->config());
117
93	–	$tn=$self->{treenode}->find($string);
94	–	if ( $tn eq "" ) {
95	–	$self->parseerror("Unable to find $string");
96	–	}
97	–	return $tn->associate();
118		}
119
120	<	sub parseerror {
120	>	sub copydocquery {
121		my $self=shift;
122	<	my $string=shift;
122	>	my $ActiveDoc=shift;
123
124	<	print "Parse Error in $self->{url}, line $self-{switch}->line()\n";
105	<	print $string."\n";
106	<	die;
124	>	$self->basequery($ActiveDoc->basequery());
125		}
126
127	<	sub checktag {
127	>	sub config {
128	>	my $self=shift;
129	>	@_?$self->{ActiveConfig}=shift
130	>	: $self->{ActiveConfig};
131	>	}
132	>
133	>	sub basequery {
134	>	my $self=shift;
135	>	@_ ? $self->{Query}=shift
136	>	: $self->{Query};
137	>	}
138	>
139	>	sub options {
140		my $self=shift;
111	–	my $hashref=shift;
141		my $param=shift;
142	<	my $tagname=shift;
142	>	$self->basequery()->getparam('option_'.$param);
143	>	}
144
145	<	if ( ! exists $$hashref{$param} ) {
146	<	$self->parseerror("Incomplete Tag <$tagname> : $param required");
145	>	sub getfile() {
146	>	my $self=shift;
147	>	my $origurl=shift;
148	>
149	>	my $fileref;
150	>	my ($url, $file)=$self->{urlhandler}->get($origurl);
151	>	# do we already have an appropriate object?
152	>	($fileref)=$self->config()->find($url);
153	>	#undef $fileref;
154	>	if (  defined $fileref ) {
155	>	print "found $url in database ----\n";
156	>	$fileref->update();
157	>	}
158	>	else {
159	>	if ( $file eq "" ) {
160	>	$self->parseerror("Unable to get $origurl");
161	>	}
162	>	#-- set up a new preprocess file
163	>	print "Making a new file $url----\n";
164	>	$fileref=ActiveDoc::PreProcessedFile->new($self->config());
165	>	$fileref->url($url);
166	>	$fileref->update();
167		}
168	+	return $fileref;
169		}
170
171	<	# ------------------------ Tag Routines ------------------------------
172	<	#
173	<	# The Include tag
174	<	#
171	>	sub activatedoc {
172	>	my $self=shift;
173	>	my $url=shift;
174	>
175	>	# first get a preprocessed copy of the file
176	>	my $fileob=$self->getfile($url);
177	>
178	>	# now parse it for the <DocType> tag
179	>	$self->{doctypefound}=0;
180	>	$self->newparse("doctype");
181	>	$self->addtag("doctype","Doc", \&Doc_Start, $self,
182	>	"", $self, "", $self);
183	>	$self->parse("doctype");
184	>
185	>	if ( ! defined $self->{docobject} ) {
186	>	print "No <Doc type=> Specified in ".$fileob->url()."\n";
187	>	exit 1;
188	>	}
189	>	# Set up a new object of the specified type
190	>	my $newobj=$self->{docobject}->new($self->config());
191	>	$newobj->url($url);
192	>	return $newobj;
193	>	}
194	>
195	>	# -------- Error Handling and Error services --------------
196	>
197	>	sub error {
198	>	my $self=shift;
199	>	my $string=shift;
200	>
201	>	die $string."\n";
202	>	}
203	>
204	>	sub parseerror {
205	>	my $self=shift;
206	>	my $string=shift;
207	>
208	>	($line, $file)=$self->line();
209	>	print "Parse Error in ".$file->url().", line ".
210	>	$line."\n";
211	>	print $string."\n";
212	>	die;
213	>	}
214	>
215	>	sub checktag {
216	>	my $self=shift;
217	>	my $tagname=shift;
218	>	my $hashref=shift;
219	>	my $param=shift;
220	>
221	>	if ( ! exists $$hashref{$param} ) {
222	>	$self->parseerror("Incomplete Tag <$tagname> : $param required");
223	>	}
224	>	}
225
226	<	sub Include_Start {
226	>	sub line {
227		my $self=shift;
127	–	my $name=shift;
128	–	my $hashref=shift;
228
229	<	$self->{switch}->checkparam( $name, "ref");
230	<	print "<Include> tag not yet implemented\n";
231	<	#        $self->include($$hashref{'ref'},$$hashref{'linkdoc'});
229	>	my ($line, $fileobj)=
230	>	$self->{File}->realline($self->{currentparser}->line());
231	>	return ($line, $fileobj);
232	>	}
233	>
234	>	sub tagstartline {
235	>	my $self=shift;
236	>	my ($line, $fileobj)=$self->{File}->line(
237	>	$self->{currentparser}->tagstartline());
238	>	return ($line, $fileobj);
239		}
240
241	<	sub Use_Start {
241	>	sub file {
242		my $self=shift;
243	+
244	+	$self->{File}->file();
245	+	}
246	+
247	+	# --------------- Initialisation Methods ---------------------------
248	+
249	+	sub init {
250	+	# Dummy Routine - override for derived classes
251	+	}
252	+
253	+	# ------------------- Tag Routines -----------------------------------
254	+	#
255	+	# Base - for setting url bases
256	+	#
257	+	sub Base_start {
258	+	my $self=shift;
259		my $name=shift;
260		my $hashref=shift;
261
262	<	print "<Use> tag not yet implemented\n";
262	>	$self->checktag($name, $hashref, 'type' );
263	>	$self->checktag($name, $hashref, 'base' );
264	>
265	>	# Keep track of base tags
266	>	push @{$self->{basestack}}, $$hashref{"type"};
267	>	# Set the base
268	>	$self->{urlhandler}->setbase($$hashref{"type"},$hashref);
269	>
270	>	}
271	>
272	>	sub Base_end {
273	>	my $self=shift;
274	>	my $name=shift;
275	>	my $type;
276	>
277	>	if ( $#{$self->{basestack}} == -1 ) {
278	>	print "Parse Error : unmatched </".$name."> on line ".
279	>	$self->line()."\n";
280	>	die;
281	>	}
282	>	else {
283	>	$type = pop @{$self->{basestack}};
284	>	$self->{urlhandler}->unsetbase($type);
285	>	}
286	>	}
287	>
288	>	sub Doc_Start {
289	>	my $self=shift;
290	>	my $name=shift;
291	>	my $hashref=shift;
292	>
293	>	$self->checktag($name, $hashref, "type");
294	>	$self->{doctypefound}++;
295	>	if ( $self->{doctypefound} == 1 ) { # only take first doctype
296	>	$self->{docobject}=$$hashref{'type'};
297	>	}
298	>	}
299	>
300	>	sub userinterface {
301	>	my $self=shift;
302	>	@_?$self->{userinterface}=shift
303	>	:$self->{userinterface}
304		}

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