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Comparing COMP/SCRAM/src/ActiveDoc/ActiveDoc.pm (file contents):
Revision 1.6 by williamc, Fri Nov 19 15:27:46 1999 UTC vs.
Revision 1.23 by williamc, Wed Feb 23 14:53:28 2000 UTC

# Line 7 | Line 7
7   #
8   # Interface
9   # ---------
10 < # new()         : A new ActiveDoc object
10 > # new(ActiveConfig[,options])           : A new ActiveDoc object
11   # url()         : Return/set the docs url - essential
12   # file()        : Return the local filename of document
13 + # ProcessFile() : Return the filename of PreProcessed document
14   #
15   # parse(parselabel): Parse the document file for the given parse level
16 + # parent()         : return the object ref of the calling parent
17   # newparse(parselabel) : Create a new parse type
18   # addtag(parselabel,tagname,start,obj,text,obj,end,obj)
19   #                               : Add tags to the parse given by label
20 < # newdoc(file)  : Return an new object of the appropriate type
20 > # checktag(tagname, hashref, param) : check for existence of param in
21 > #                                       hashref from a tag call
22 > # includeparse(local_parsename, objparsename, activedoc) : copy the parse from
23 > #                                                       one object to another
24 > # currentparser() : return the current parser object
25 > # currentparsename([name]) : get/set current parse name
26   # getfile(url)  : get a processedfile object given a url
27 + # activatedoc(url) : Return the object ref for a doc described by the given url
28 + #                    -- any parse called "init" will also be run
29   # config([ActiveConfig]) : Set up/return Configuration for the document
30   # basequery([ActiveConfig]) : Set up/return UserQuery for the doc
31   # copydocconfig(ActiveDoc) : Copy the basic configuration from the ActiveDoc
32   # copydocquery(ActiveDoc) : Copy the basicquery from the ActiveDoc
33 + # userinterface()       : Return the defaullt userinterface
34 + # option(var)           : return the value of the option var ( or undef )
35 + # requestoption("message") : Ask the user to supply a value for an option
36 + #                            if it dosnt already exist
37 + # askuser(Query)        : send a query object to the userinterface
38 + # verbose(string)       : Print string in verbosity mode
39   #
40   # -- error methods --
41   # error(string)       : Report an general error to the user
42   # parseerror(string)  : Report an error during parsing a file
43   # line()              : Return the current line number of the document
44   #                       and the ProcessedFileObj it is in
45 + #
46 + # -- support for inheriting classes
47 + # _saveactivedoc(filehandle)
48 + # _restoreactivedoc(filehandle)
49  
50   package ActiveDoc::ActiveDoc;
51   require 5.004;
52   use ActiveDoc::Parse;
53   use ActiveDoc::ActiveConfig;
54   use ActiveDoc::PreProcessedFile;
55 < use ObjectUtilities::ObjectBase;
55 > use ObjectUtilities::StorableObject;
56   use URL::URLhandler;
57  
58 < @ISA = qw(ObjectUtilities::ObjectBase);
58 > @ISA = qw(ObjectUtilities::StorableObject);
59  
60   sub new {
61          my $class=shift;
62          $self={};
63          bless $self, $class;
64          $self->config(shift);
65 <        
65 >
66 >        # have some override options been passed
67 >        if ( @_ ) {
68 >           $self->basequery(shift);
69 >        }
70 >        else {
71 >           # --- is there a starter document?
72 >           my $basedoc=$self->config()->basedoc();
73 >           if ( defined $basedoc ) {
74 >             $self->copydocquery($basedoc);
75 >             $self->verbose("Initialising from $basedoc");
76 >           }
77 >           else {
78 >             $self->error("ActiveDoc Error : No base doc found");
79 >           }
80 >        }
81 >        $self->verbose("New ActiveDoc (".ref($self).") Created");
82 >        $self->_init2();
83 > }
84 >
85 > sub _init2 {
86 >
87 >        my $self=shift;
88          # A URL handler per document
89          $self->{urlhandler}=URL::URLhandler->new($self->config()->cache());
90  
91 +        # A default UserInterface
92 +        $self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
93          $self->init(@_);
94          return $self;
95 +
96 + }
97 +
98 + sub verbose {
99 +        my $self=shift;
100 +        my $string=shift;
101 +
102 +        if ( $self->option('verbose_all') ||
103 +                        $self->option('verbose_'.ref($self)) ) {
104 +          print ">".ref($self)."($self) : \n->".$string."\n";
105 +        }
106   }
107  
108   # ----- parse related routines --------------
# Line 56 | Line 110 | sub parse {
110          my $self=shift;
111          $parselabel=shift;
112  
113 <        my $file=$self->file();
60 <        print "Parse called on file $file\n";
113 >        my $file=$self->ProcessFile();
114          if ( $file ) {
115 <          $self->{parsers}{$parselabel}->parse($file,@_);
115 >          if ( exists $self->{parsers}{$parselabel} ) {
116 >            $self->verbose("Parsing $parselabel in file $file");
117 >            $self->{currentparsename}=$parselabel;
118 >            $self->{currentparser}=$self->{parsers}{$parselabel};
119 >            $self->{parsers}{$parselabel}->parse($file,@_);
120 >            delete $self->{currentparser};
121 >            $self->{currentparsename}="";
122 >            $self->verbose("Parse $parselabel Complete");
123 >          }
124          }
125          else {
126            print "Cannot parse - file not known\n";
127          }
128   }
129  
130 + sub currentparsename {
131 +        my $self=shift;
132 +        @_?$self->{currentparsename}=shift
133 +          :$self->{currentparsename};
134 + }
135 +
136 + sub currentparser {
137 +        my $self=shift;
138 +        return $self->{currentparser};
139 + }
140 +
141 +
142   sub newparse {
143          my $self=shift;
144          my $parselabel=shift;
# Line 75 | Line 148 | sub newparse {
148          $self->{parsers}{$parselabel}->addgrouptags();
149   }
150  
151 + sub cleartags {
152 +        my $self=shift;
153 +        my $parselabel=shift;
154 +
155 +        $self->{parsers}{$parselabel}->cleartags();
156 + }
157 +
158 +
159 + sub includeparse {
160 +        my $self=shift;
161 +        my $parselabel=shift;
162 +        my $remoteparselabel=shift;
163 +        my $activedoc=shift;
164 +
165 +        # Some error trapping
166 +        if ( ! exists $self->{parsers}{$parselabel} ) {
167 +          $self->error("Unknown local parse name specified");
168 +        }
169 +        if ( ! exists $activedoc->{parsers}{$remoteparselabel} ) {
170 +          $self->error("Unknown parse name specified in remote obj $activedoc");
171 +        }
172 +
173 +        #
174 +        my $rp=$activedoc->{parsers}{$remoteparselabel};
175 +        $self->{parsers}{$parselabel}->includeparse($rp);
176 + }
177 +
178   sub addtag {
179          my $self=shift;
180          my $parselabel=shift;
# Line 96 | Line 196 | sub addurltags {
196  
197   sub url {
198          my $self=shift;
199 <        @_ ?$self->{File}=$self->getfile(shift)
200 <            : $self->{File};
199 >        # get file & preprocess
200 >        if ( @_  ) {
201 >                $self->{File}=$self->getfile(shift);
202 >                $self->verbose("url downloaded to $self->{File}");
203 >        }
204 >        $self->{File}->url();
205   }
206  
207   sub copydocconfig {
# Line 112 | Line 216 | sub copydocquery {
216          my $self=shift;
217          my $ActiveDoc=shift;
218  
219 <         $self->basequery($ActiveDoc->basequery());
219 >        if ( defined $ActiveDoc->basequery() ) {
220 >          $self->basequery($ActiveDoc->basequery());
221 >        }
222 >        else {
223 >          $self->error("Cannot copy basequery - undefined");
224 >        }
225   }
226  
227   sub config {
# Line 123 | Line 232 | sub config {
232  
233   sub basequery {
234          my $self=shift;
235 <        @_ ? $self->{UserQuery}=shift
236 <           : $self->{UserQuery};
235 >        @_?$self->{Query}=shift
236 >           :$self->{Query};
237   }
238  
239 < sub getfile() {
239 > sub option {
240 >        my $self=shift;
241 >        my $param=shift;
242 >        if ( defined $self->basequery()) {
243 >                return $self->basequery()->getparam($param);
244 >        }
245 >        else {
246 >                return $undef;
247 >        }
248 > }
249 >
250 > sub requestoption {
251 >        my $self=shift;
252 >        my $param=shift;
253 >        my $string=shift;
254 >
255 >        my $par=undef;
256 >        if ( defined $self->basequery()) {
257 >        $par=$self->basequery()->getparam($param);
258 >        while ( ! defined $par ) {
259 >          $self->basequery()->querytype( $param, "basic");
260 >          $self->basequery()->querymessage( $param, $string);
261 >          $self->userinterface()->askuser($self->basequery());
262 >          $par=$self->basequery()->getparam($param);
263 >        }
264 >        }
265 >        return $par;
266 > }
267 >
268 > sub askuser {
269 >        my $self=shift;
270 >        return $self->userinterface()->askuser(@_);
271 > }
272 >
273 > sub getfile {
274          my $self=shift;
275          my $origurl=shift;
276  
277          my $fileref;
278 <        print "GETFILE called\n";
279 <        my ($url, $file)=$self->{urlhandler}->get($origurl);
278 >        my ($url, $file);
279 >        if ( (defined ($it=$self->option('url_update'))) &&
280 >                ( $it eq "1" || $origurl=~/^$it/ )) {
281 >             $self->verbose("Forced download of $origurl");
282 >             ($url, $file)=$self->{urlhandler}->download($origurl);
283 >        }
284 >        else {
285 >           $self->verbose("Attempting to get $origurl");
286 >           ($url, $file)=$self->{urlhandler}->get($origurl);
287 >        }
288          # do we already have an appropriate object?
289 <        #my ($fileref)=$self->config()->find("__preprocessed",$url);
290 <        undef $fileref;
289 >        ($fileref)=$self->config()->find($url);
290 >        #undef $fileref;
291          if (  defined $fileref ) {
292 <         print "found $url in database ----\n";
292 >         $self->verbose("Found $url in database");
293           $fileref->update();
294          }
295          else {
# Line 146 | Line 297 | sub getfile() {
297             $self->parseerror("Unable to get $origurl");
298           }
299           #-- set up a new preprocess file
300 <         print "Making a new file $url----\n";
300 >         $self->verbose("Making a new preprocessed file $url");
301           $fileref=ActiveDoc::PreProcessedFile->new($self->config());
302           $fileref->url($url);
303           $fileref->update();
153         $self->config()->store($fileref,"__preprocessed",$url);
304          }
155        print "---------- returning".$fileref."\n";
305          return $fileref;
306   }
307  
308 + sub activatedoc {
309 +        my $self=shift;
310 +        my $url=shift;
311 +
312 +        # first get a preprocessed copy of the file
313 + #       my $fileob=$self->getfile($url);
314 +
315 +        # now parse it for the <DocType> tag
316 +        my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
317 +        $tempdoc->{urlhandler}=$self->{urlhandler};
318 +        my $fullurl=$tempdoc->url($url);
319 +        $url=$fullurl;
320 +        $tempdoc->{doctypefound}=0;
321 +        $tempdoc->newparse("doctype");
322 +        $tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
323 +                                          "", $tempdoc, "", $tempdoc);
324 +        $tempdoc->parse("doctype");
325 +
326 +        if ( ! defined $tempdoc->{docobject} ) {
327 +          print "No <Doc type=> Specified in ".$url."\n";
328 +          exit 1;
329 +        }
330 +        # Set up a new object of the specified type
331 +        eval "require $tempdoc->{docobject}";
332 +        die $@ if $@;
333 +        my $newobj=$tempdoc->{docobject}->new($self->config());
334 +        undef $tempdoc;
335 +        $newobj->url($url);
336 +        $newobj->parent($self);
337 +        $newobj->_initparse();
338 +        return $newobj;
339 + }
340 +
341 + sub parent {
342 +        my $self=shift;
343 +
344 +        @_?$self->{parent}=shift
345 +          :$self->{parent};
346 + }
347 +
348 + sub _initparse {
349 +        my $self=shift;
350 +
351 +        $self->parse("init");
352 + }
353   # -------- Error Handling and Error services --------------
354  
355   sub error {
# Line 169 | Line 363 | sub parseerror {
363          my $self=shift;
364          my $string=shift;
365  
366 <        ($line, $file)=$self->line();
367 <        print "Parse Error in ".$file->url().", line ".
366 >        if ( $self->currentparsename() eq "" ) {
367 >                $self->error($string);
368 >        }
369 >        else {
370 >         ($line, $file)=$self->line();
371 >         print "Parse Error in ".$file->url().", line ".
372                                          $line."\n";
373 <        print $string."\n";
374 <        die;
373 >         print $string."\n";
374 >         exit;
375 >        }
376   }
377  
378   sub checktag {
# Line 188 | Line 387 | sub checktag {
387   }
388  
389   sub line {
390 <        $self=shift;
390 >        my $self=shift;
391 >
392          my ($line, $fileobj)=
393 <                $self->{Processedfile}->line($self->{switch}->line());
393 >                $self->{File}->realline($self->{currentparser}->line());
394          return ($line, $fileobj);
395   }
396  
397 + sub tagstartline {
398 +        my $self=shift;
399 +        my ($line, $fileobj)=$self->{File}->line(
400 +                $self->{currentparser}->tagstartline());
401 +        return ($line, $fileobj);
402 + }
403 +
404   sub file {
405          my $self=shift;
406  
407 <        $self->{PPf}->file();
407 >        $self->{File}->file();
408   }
409  
410 < # --------------- Initialisation Methods ---------------------------
204 <
205 < sub preprocess_init {
410 > sub ProcessFile {
411          my $self=shift;
412 <        $self->{PPfile}=PreProcessedFile->new($self->config());
412 >
413 >        return $self->{File}->ProcessedFile();
414   }
415  
416 + # --------------- Initialisation Methods ---------------------------
417 +
418   sub init {
419          # Dummy Routine - override for derived classes
420   }
# Line 227 | Line 435 | sub Base_start {
435          push @{$self->{basestack}}, $$hashref{"type"};
436          # Set the base
437          $self->{urlhandler}->setbase($$hashref{"type"},$hashref);
230
438   }
439  
440   sub Base_end {
# Line 236 | Line 443 | sub Base_end {
443          my $type;
444  
445          if ( $#{$self->{basestack}} == -1 ) {
446 <                print "Parse Error : unmatched </".$name."> on line ".
240 <                        $self->line()."\n";
241 <                die;
446 >                $self->parseerror("Parse Error : unmatched </$name>");
447          }
448          else {
449            $type = pop @{$self->{basestack}};
450            $self->{urlhandler}->unsetbase($type);
451          }
452   }
453 +
454 + sub Doc_Start {
455 +        my $self=shift;
456 +        my $name=shift;
457 +        my $hashref=shift;
458 +        
459 +        $self->checktag($name, $hashref, "type");
460 +        $self->{doctypefound}++;
461 +        if ( $self->{doctypefound} == 1 ) { # only take first doctype
462 +           $self->{docobject}=$$hashref{'type'};
463 +        }
464 + }
465 +
466 + sub userinterface {
467 +        my $self=shift;
468 +        @_?$self->{userinterface}=shift
469 +          :$self->{userinterface}
470 + }
471 +
472 + sub _saveactivedoc {
473 +        my $self=shift;
474 +        my $fh=shift;
475 +        print "Storing $self\n";
476 +        print $fh $self->url()."\n";
477 + }
478 +
479 + sub _restoreactivedoc {
480 +        my $self=shift;
481 +        my $fh=shift;
482 +
483 +        my $url=<$fh>;
484 +        chomp $url;
485 +        $self->url($url);
486 + }

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