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Comparing COMP/SCRAM/src/ActiveDoc/ActiveDoc.pm (file contents):
Revision 1.7 by williamc, Tue Nov 23 17:20:40 1999 UTC vs.
Revision 1.25 by williamc, Wed Mar 29 09:45:47 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();
113 >        my $file=$self->ProcessFile();
114          if ( $file ) {
115 <          $self->{currentparser}=$self->{parsers}{$parselabel};
116 <          $self->{parsers}{$parselabel}->parse($file,@_);
117 <          delete $self->{currentparser};
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";
126 >          $self->error("Cannot parse $parselabel - file not known");
127          }
128   }
129  
130 + sub currentparsename {
131 +        my $self=shift;
132 +        @_?$self->{currentparsename}=shift
133 +          :(defined $self->{currentparsename}?$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 76 | 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 97 | 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 >        if ( defined $self->{File} ) {
205 >          return $self->{File}->url();
206 >        }
207 >        else { return "undefined"; }
208   }
209  
210   sub copydocconfig {
# Line 113 | Line 219 | sub copydocquery {
219          my $self=shift;
220          my $ActiveDoc=shift;
221  
222 <         $self->basequery($ActiveDoc->basequery());
222 >        if ( defined $ActiveDoc->basequery() ) {
223 >          $self->basequery($ActiveDoc->basequery());
224 >        }
225 >        else {
226 >          $self->error("Cannot copy basequery - undefined");
227 >        }
228   }
229  
230   sub config {
# Line 124 | Line 235 | sub config {
235  
236   sub basequery {
237          my $self=shift;
238 <        @_ ? $self->{UserQuery}=shift
239 <           : $self->{UserQuery};
238 >        @_?$self->{Query}=shift
239 >           :$self->{Query};
240 > }
241 >
242 > sub option {
243 >        my $self=shift;
244 >        my $param=shift;
245 >        if ( defined $self->basequery()) {
246 >                return $self->basequery()->getparam($param);
247 >        }
248 >        else {
249 >                return $undef;
250 >        }
251 > }
252 >
253 > sub requestoption {
254 >        my $self=shift;
255 >        my $param=shift;
256 >        my $string=shift;
257 >
258 >        my $par=undef;
259 >        if ( defined $self->basequery()) {
260 >        $par=$self->basequery()->getparam($param);
261 >        while ( ! defined $par ) {
262 >          $self->basequery()->querytype( $param, "basic");
263 >          $self->basequery()->querymessage( $param, $string);
264 >          $self->userinterface()->askuser($self->basequery());
265 >          $par=$self->basequery()->getparam($param);
266 >        }
267 >        }
268 >        return $par;
269 > }
270 >
271 > sub askuser {
272 >        my $self=shift;
273 >        return $self->userinterface()->askuser(@_);
274   }
275  
276 < sub getfile() {
276 > sub getfile {
277          my $self=shift;
278          my $origurl=shift;
279  
280          my $fileref;
281 <        my ($url, $file)=$self->{urlhandler}->get($origurl);
281 >        my ($url, $file);
282 >        if ( (defined ($it=$self->option('url_update'))) &&
283 >                ( $it eq "1" || $origurl=~/^$it/ )) {
284 >             $self->verbose("Forced download of $origurl");
285 >             ($url, $file)=$self->{urlhandler}->download($origurl);
286 >        }
287 >        else {
288 >           $self->verbose("Attempting to get $origurl");
289 >           ($url, $file)=$self->{urlhandler}->get($origurl);
290 >        }
291          # do we already have an appropriate object?
292          ($fileref)=$self->config()->find($url);
293          #undef $fileref;
294          if (  defined $fileref ) {
295 <         print "found $url in database ----\n";
295 >         $self->verbose("Found $url in database");
296           $fileref->update();
297          }
298          else {
# Line 146 | Line 300 | sub getfile() {
300             $self->parseerror("Unable to get $origurl");
301           }
302           #-- set up a new preprocess file
303 <         print "Making a new file $url----\n";
303 >         $self->verbose("Making a new preprocessed file $url");
304           $fileref=ActiveDoc::PreProcessedFile->new($self->config());
305           $fileref->url($url);
306           $fileref->update();
# Line 154 | Line 308 | sub getfile() {
308          return $fileref;
309   }
310  
311 + sub activatedoc {
312 +        my $self=shift;
313 +        my $url=shift;
314 +
315 +        # first get a preprocessed copy of the file
316 + #       my $fileob=$self->getfile($url);
317 +
318 +        # now parse it for the <DocType> tag
319 +        my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
320 +        $tempdoc->{urlhandler}=$self->{urlhandler};
321 +        my $fullurl=$tempdoc->url($url);
322 +        $url=$fullurl;
323 +        $tempdoc->{doctypefound}=0;
324 +        $tempdoc->newparse("doctype");
325 +        $tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
326 +                                          "", $tempdoc, "", $tempdoc);
327 +        $tempdoc->parse("doctype");
328 +
329 +        if ( ! defined $tempdoc->{docobject} ) {
330 +          print "No <Doc type=> Specified in ".$url."\n";
331 +          exit 1;
332 +        }
333 +        # Set up a new object of the specified type
334 +        eval "require $tempdoc->{docobject}";
335 +        die $@ if $@;
336 +        my $newobj=$tempdoc->{docobject}->new($self->config());
337 +        undef $tempdoc;
338 +        $newobj->url($url);
339 +        $newobj->parent($self);
340 +        $newobj->_initparse();
341 +        return $newobj;
342 + }
343 +
344 + sub parent {
345 +        my $self=shift;
346 +
347 +        @_?$self->{parent}=shift
348 +          :$self->{parent};
349 + }
350 +
351 + sub _initparse {
352 +        my $self=shift;
353 +
354 +        $self->parse("init");
355 + }
356   # -------- Error Handling and Error services --------------
357  
358   sub error {
# Line 167 | Line 366 | sub parseerror {
366          my $self=shift;
367          my $string=shift;
368  
369 <        ($line, $file)=$self->line();
370 <        print "Parse Error in ".$file->url().", line ".
369 >        if ( $self->currentparsename() eq "" ) {
370 >                $self->error($string);
371 >        }
372 >        else {
373 >         ($line, $file)=$self->line();
374 >         print "Parse Error in ".$file->url().", line ".
375                                          $line."\n";
376 <        print $string."\n";
377 <        die;
376 >         print $string."\n";
377 >         exit;
378 >        }
379   }
380  
381   sub checktag {
# Line 187 | Line 391 | sub checktag {
391  
392   sub line {
393          my $self=shift;
394 +
395          my ($line, $fileobj)=
396 <                $self->{PPfile}->line($self->{currentparser}->line());
396 >                $self->{File}->realline($self->{currentparser}->line());
397          return ($line, $fileobj);
398   }
399  
400   sub tagstartline {
401          my $self=shift;
402 <        my ($line, $fileobj)=$self->{PPfile}->line(
402 >        my ($line, $fileobj)=$self->{File}->line(
403                  $self->{currentparser}->tagstartline());
404          return ($line, $fileobj);
405   }
# Line 202 | Line 407 | sub tagstartline {
407   sub file {
408          my $self=shift;
409  
410 <        $self->{PPf}->file();
410 >        $self->{File}->file();
411   }
412  
413 < # --------------- Initialisation Methods ---------------------------
209 <
210 < sub preprocess_init {
413 > sub ProcessFile {
414          my $self=shift;
415 <        $self->{PPfile}=PreProcessedFile->new($self->config());
415 >
416 >        return $self->{File}->ProcessedFile();
417   }
418  
419 + # --------------- Initialisation Methods ---------------------------
420 +
421   sub init {
422          # Dummy Routine - override for derived classes
423   }
# Line 232 | Line 438 | sub Base_start {
438          push @{$self->{basestack}}, $$hashref{"type"};
439          # Set the base
440          $self->{urlhandler}->setbase($$hashref{"type"},$hashref);
235
441   }
442  
443   sub Base_end {
# Line 241 | Line 446 | sub Base_end {
446          my $type;
447  
448          if ( $#{$self->{basestack}} == -1 ) {
449 <                print "Parse Error : unmatched </".$name."> on line ".
245 <                        $self->line()."\n";
246 <                die;
449 >                $self->parseerror("Parse Error : unmatched </$name>");
450          }
451          else {
452            $type = pop @{$self->{basestack}};
453            $self->{urlhandler}->unsetbase($type);
454          }
455   }
456 +
457 + sub Doc_Start {
458 +        my $self=shift;
459 +        my $name=shift;
460 +        my $hashref=shift;
461 +        
462 +        $self->checktag($name, $hashref, "type");
463 +        $self->{doctypefound}++;
464 +        if ( $self->{doctypefound} == 1 ) { # only take first doctype
465 +           $self->{docobject}=$$hashref{'type'};
466 +        }
467 + }
468 +
469 + sub userinterface {
470 +        my $self=shift;
471 +        @_?$self->{userinterface}=shift
472 +          :$self->{userinterface}
473 + }
474 +
475 + sub _saveactivedoc {
476 +        my $self=shift;
477 +        my $fh=shift;
478 +        print "Storing $self\n";
479 +        print $fh $self->url()."\n";
480 + }
481 +
482 + sub _restoreactivedoc {
483 +        my $self=shift;
484 +        my $fh=shift;
485 +
486 +        my $url=<$fh>;
487 +        chomp $url;
488 +        $self->url($url);
489 + }

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