src/ActiveDoc/PreProcessedFile.pm

#
# PreProcessedFile.pm
#
# Originally Written by Christopher Williams
#
# Description
# -----------
# Handle Preprocessed file information
#
# Interface
# ---------
# new()         : A new PreProcessedFile object
# url([url])    : return the full url. With an argument will take the given
#                 url and expand it in the context of the current url base. 
# file()        : return the filename corresponding to url of the document
# ProcessedFile() : return the filename corresponding to processed url 
#                       of the document
# line(number)  : Return the line and fileobj corresponding to number in 
#                 processed file
# update()          : update the preprocessed file as required.
# store(filename)   :
# restore(filename) :

package ActiveDoc::PreProcessedFile;
use ActiveDoc::ActiveDoc;
require 5.004;
@ISA=qw(ActiveDoc::ActiveDoc);

sub init {
        my $self=shift;
        $self->{lastsequence}=-1;
        # Specific Tags
        $self->newparse("include");
        $self->addurltags("include");
        $self->addtag("include","Include", \&Include_Start, $self,      
                                          "", $self, "", $self);
}

sub line {
        my $self=shift;
        my $origline=shift;

        my $fileob=$self;
        my $line=$origline;
        for(my $i=0; $i<=$#{$self->{includesdesc}}; $i++ ) {
          $inc=$self->{includesdesc}[$i];
          $startline=$inc->startline();
          last if ( $line < $startline );
          if ( $line > ($inc->lines()+$startline) ) {
            $line=$line-$inc->lines()+1+($inc->endline()-$startline);
                         # n lines in original map to m lines in expanded
          }
          else { # must be in the include file
            ($line, $fileob)=$self->{includes}[$i]->
                                        line($line-$startline+1);
          }
        }
        
        return ($line, $fileob);
}

sub url {
        my $self=shift;

        if ( @_ ) {
          my $url=shift;
          ($self->{url}, $file)=$self->{urlhandler}->get($url);
        }
        else {
          $self->{url};
        }
}

sub ProcessedFile {
        my $self=shift;
        $self->config()->cache()->file("_preprocess_".$self->url());
}

sub file {
        my $self=shift;
        
        my ($url, $file)=$self->{urlhandler}->get($self->url());
        return $file;
}
 

sub update {
        my $self=shift;

        my $rv=0;
        my $outfile="_preprocess_".$self->url();
        my $fileobj;
        my $sn;
        @{$self->{updatedfiles}}=();
        
        # -- check the input file snd output sequence numbers are in sync
        my $basefilenumber=$self->config()->cache()->updatenumber($self->url());
        if ( $basefilenumber != $self->{lastsequence} ) {
            $rv=1;
        }
        else {
          # -- update dependencies
          for (my $i=0; $i<=$#{$self->{includes}}; $i++ ) {
             $fileobj=$self->{includes}[$i];
             $rv=$rv+$fileobj->update(); # make sure it up to date

             # -- has it changed since last time we built this object
             $sn=$self->config()->sequence($fileobj->url());
             if ( $self->{includesdesc}[$i]->lastsequence() != $sn ) {
               $rv++;
               push @{$self->{updatedfiles}},$fileobj->url(); # record for test
             }
          }
        }

        if ( $rv != 0 ) {
         print " Need to Update ".$self->url()."\n";
          # ---- sort out the preprocessed file in the cache
          my $newfile=$self->config()->cache()->
                                filename($outfile);
          $self->config()->cache()->store($outfile,$newfile);
          
          $self->process($self->config()->cache()->file($self->url()),$newfile);
          $self->{lastsequence}=$basefilenumber;
          # store self in the objectstore by url
          $self->config->store($self,$self->url());
        }
        else {
            print "No Need to Update ".$self->url()."\n";
        }
        return $rv;
}

sub updatedfiles {
        my $self=shift;
        return @{$self->{updatedfiles}};
}

sub process {
        my $self=shift;
        my $filein=shift;
        my $fileout=shift;

        #-- create a new file in the url cache 
        $self->_cleanup();
        $self->{fileout}=FileHandle->new();
        $self->{fileout}->open(">".$fileout) or die "Unable to open $newfile\n"
                                ."$!\n";

        # turn on the switch streamer
        $self->parse("include", $self->{fileout}, "include_starttag");

        $self->{fileout}->close();
}

sub store {
        my $self=shift;
        my $location=shift;

        my $fh=$self->openfile(">".$location);

        # get all include objects to store themselves
        print $fh $self->{lastsequence}."\n";
        print $fh ($self->url()?$self->url():"");
        print $fh "\n"; 
        foreach $inc ( @{$self->{includesdesc}} ) {
          print $fh ">\n";
          $inc->store($fh);
        }
        close $fh;
}

sub restore {
        my $self=shift;
        my $location=shift;

        my $fh=$self->openfile("<".$location);

        $self->{lastsequence}=<$fh>;
        chomp $self->{lastsequence};
        $self->{url}=<$fh>;
        chomp $self->{url};
        while ( <$fh> ) {
           if ( $_ eq ">\n") {
                $inc=IncFile->new();
                $inc->restore($fh);
                push @{$self->{includesdesc}}, $inc;
                # resurrect the appropriate object ID
                push @{$self->{includes}}, $self->getfile($inc->file());
           }
        }
        $fh->close();
}

sub _cleanup {
        my $self=shift;
        foreach $inc ( @{$self->{includesdesc}} ) {
          undef $inc;
        }
        undef @{$self->{includesdesc}};
        undef @{$self->{includes}};
}

sub _includefile {
        use ActiveDoc::IncFile;
        my $self=shift;
        my $fileobj=shift;
        my $startline=shift;
        my $endline=shift;
        my $lines=shift;
        
        my $obj=IncFile->new();
        my $url=$fileobj->url();
        my $sn=$self->config()->sequence($url);
        $obj->init($url,$startline,$endline,$lines, $sn);
        push @{$self->{includes}}, $fileobj;
        push @{$self->{includesdesc}}, $obj;
}

# ------------------------ Tag Routines -------------------------------

#
# Include tag

sub Include_Start {
        my $self=shift;
        my $name=shift;
        my $hashref=shift;

        $self->checktag( $name,$hashref, "url");
        print "Including ".$$hashref{'url'}."\n";
        my $fileObj=$self->getfile($$hashref{'url'});
        if ( defined $fileObj ) {
          # dump out to our file in construction
          my $fh=FileHandle->new();
          my $outfilename=$fileObj->ProcessedFile();
          $fh->open("<".$outfilename) or die "Unable to open $outfilename\n";
          print {$self->{fileout}} "\n";# always start an include on a new line
          my $linecount=0;
          while ( <$fh> ) {
            $linecount++;
            print {$self->{fileout}} $_;
          }
          print {$self->{fileout}} "\n";# always end include with new line
          undef $fh;
          $self->_includefile($fileObj, $self->{currentparser}->tagstartline(),
                $self->{currentparser}->line(), $linecount);
        }
}

Revision:	1.3
Committed:	Tue Nov 23 17:20:40 1999 UTC (25 years, 5 months ago) by williamc
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+70 -43 lines
Log Message:	Changes to get PreProcessor Working
#	User	Rev	Content
1	williamc	1.1	#
2			# PreProcessedFile.pm
3			#
4			# Originally Written by Christopher Williams
5			#
6			# Description
7			# -----------
8			# Handle Preprocessed file information
9			#
10			# Interface
11			# ---------
12			# new() : A new PreProcessedFile object
13			# url([url]) : return the full url. With an argument will take the given
14			# url and expand it in the context of the current url base.
15			# file() : return the filename corresponding to url of the document
16			# ProcessedFile() : return the filename corresponding to processed url
17			# of the document
18			# line(number) : Return the line and fileobj corresponding to number in
19			# processed file
20			# update() : update the preprocessed file as required.
21			# store(filename) :
22			# restore(filename) :
23
24			package ActiveDoc::PreProcessedFile;
25			use ActiveDoc::ActiveDoc;
26			require 5.004;
27			@ISA=qw(ActiveDoc::ActiveDoc);
28
29			sub init {
30			my $self=shift;
31			$self->{lastsequence}=-1;
32			# Specific Tags
33			$self->newparse("include");
34			$self->addurltags("include");
35			$self->addtag("include","Include", \&Include_Start, $self,
36			"", $self, "", $self);
37			}
38
39			sub line {
40			my $self=shift;
41			my $origline=shift;
42
43			my $fileob=$self;
44			my $line=$origline;
45	williamc	1.3	for(my $i=0; $i<=$#{$self->{includesdesc}}; $i++ ) {
46			$inc=$self->{includesdesc}[$i];
47	williamc	1.1	$startline=$inc->startline();
48			last if ( $line < $startline );
49			if ( $line > ($inc->lines()+$startline) ) {
50			$line=$line-$inc->lines()+1+($inc->endline()-$startline);
51			# n lines in original map to m lines in expanded
52			}
53			else { # must be in the include file
54	williamc	1.3	($line, $fileob)=$self->{includes}[$i]->
55			line($line-$startline+1);
56	williamc	1.1	}
57			}
58
59			return ($line, $fileob);
60			}
61
62			sub url {
63			my $self=shift;
64
65			if ( @_ ) {
66			my $url=shift;
67			($self->{url}, $file)=$self->{urlhandler}->get($url);
68			}
69			else {
70			$self->{url};
71			}
72			}
73
74			sub ProcessedFile {
75			my $self=shift;
76			$self->config()->cache()->file("_preprocess_".$self->url());
77			}
78
79			sub file {
80			my $self=shift;
81
82			my ($url, $file)=$self->{urlhandler}->get($self->url());
83			return $file;
84			}
85
86
87			sub update {
88			my $self=shift;
89
90			my $rv=0;
91	williamc	1.3	my $outfile="_preprocess_".$self->url();
92			my $fileobj;
93			my $sn;
94			@{$self->{updatedfiles}}=();
95	williamc	1.1
96	williamc	1.3	# -- check the input file snd output sequence numbers are in sync
97			my $basefilenumber=$self->config()->cache()->updatenumber($self->url());
98			if ( $basefilenumber != $self->{lastsequence} ) {
99			$rv=1;
100			}
101			else {
102			# -- update dependencies
103			for (my $i=0; $i<=$#{$self->{includes}}; $i++ ) {
104			$fileobj=$self->{includes}[$i];
105			$rv=$rv+$fileobj->update(); # make sure it up to date
106
107			# -- has it changed since last time we built this object
108			$sn=$self->config()->sequence($fileobj->url());
109			if ( $self->{includesdesc}[$i]->lastsequence() != $sn ) {
110			$rv++;
111			push @{$self->{updatedfiles}},$fileobj->url(); # record for test
112			}
113			}
114	williamc	1.1	}
115	williamc	1.3
116			if ( $rv != 0 ) {
117			print " Need to Update ".$self->url()."\n";
118	williamc	1.1	# ---- sort out the preprocessed file in the cache
119			my $newfile=$self->config()->cache()->
120	williamc	1.3	filename($outfile);
121			$self->config()->cache()->store($outfile,$newfile);
122	williamc	1.1
123			$self->process($self->config()->cache()->file($self->url()),$newfile);
124	williamc	1.3	$self->{lastsequence}=$basefilenumber;
125			# store self in the objectstore by url
126			$self->config->store($self,$self->url());
127			}
128			else {
129			print "No Need to Update ".$self->url()."\n";
130	williamc	1.1	}
131			return $rv;
132			}
133
134	williamc	1.3	sub updatedfiles {
135			my $self=shift;
136			return @{$self->{updatedfiles}};
137			}
138
139	williamc	1.1	sub process {
140			my $self=shift;
141			my $filein=shift;
142			my $fileout=shift;
143
144			#-- create a new file in the url cache
145			$self->_cleanup();
146			$self->{fileout}=FileHandle->new();
147			$self->{fileout}->open(">".$fileout) or die "Unable to open $newfile\n"
148			."$!\n";
149
150			# turn on the switch streamer
151			$self->parse("include", $self->{fileout}, "include_starttag");
152
153			$self->{fileout}->close();
154			}
155
156			sub store {
157			my $self=shift;
158			my $location=shift;
159
160			my $fh=$self->openfile(">".$location);
161
162			# get all include objects to store themselves
163			print $fh $self->{lastsequence}."\n";
164			print $fh ($self->url()?$self->url():"");
165			print $fh "\n";
166	williamc	1.3	foreach $inc ( @{$self->{includesdesc}} ) {
167	williamc	1.1	print $fh ">\n";
168			$inc->store($fh);
169			}
170			close $fh;
171			}
172
173			sub restore {
174			my $self=shift;
175			my $location=shift;
176
177	williamc	1.3	my $fh=$self->openfile("<".$location);
178	williamc	1.1
179			$self->{lastsequence}=<$fh>;
180			chomp $self->{lastsequence};
181			$self->{url}=<$fh>;
182			chomp $self->{url};
183			while ( <$fh> ) {
184	williamc	1.3	if ( $_ eq ">\n") {
185	williamc	1.1	$inc=IncFile->new();
186			$inc->restore($fh);
187	williamc	1.3	push @{$self->{includesdesc}}, $inc;
188			# resurrect the appropriate object ID
189			push @{$self->{includes}}, $self->getfile($inc->file());
190	williamc	1.1	}
191			}
192			$fh->close();
193			}
194
195			sub _cleanup {
196			my $self=shift;
197	williamc	1.3	foreach $inc ( @{$self->{includesdesc}} ) {
198	williamc	1.1	undef $inc;
199			}
200	williamc	1.3	undef @{$self->{includesdesc}};
201	williamc	1.1	undef @{$self->{includes}};
202			}
203
204	williamc	1.3	sub _includefile {
205			use ActiveDoc::IncFile;
206			my $self=shift;
207			my $fileobj=shift;
208			my $startline=shift;
209			my $endline=shift;
210			my $lines=shift;
211
212			my $obj=IncFile->new();
213			my $url=$fileobj->url();
214			my $sn=$self->config()->sequence($url);
215			$obj->init($url,$startline,$endline,$lines, $sn);
216			push @{$self->{includes}}, $fileobj;
217			push @{$self->{includesdesc}}, $obj;
218			}
219
220	williamc	1.1	# ------------------------ Tag Routines -------------------------------
221
222			#
223			# Include tag
224
225			sub Include_Start {
226			my $self=shift;
227			my $name=shift;
228			my $hashref=shift;
229
230			$self->checktag( $name,$hashref, "url");
231			print "Including ".$$hashref{'url'}."\n";
232			my $fileObj=$self->getfile($$hashref{'url'});
233			if ( defined $fileObj ) {
234			# dump out to our file in construction
235			my $fh=FileHandle->new();
236			my $outfilename=$fileObj->ProcessedFile();
237			$fh->open("<".$outfilename) or die "Unable to open $outfilename\n";
238			print {$self->{fileout}} "\n";# always start an include on a new line
239	williamc	1.3	my $linecount=0;
240	williamc	1.1	while ( <$fh> ) {
241	williamc	1.3	$linecount++;
242	williamc	1.1	print {$self->{fileout}} $_;
243			}
244			print {$self->{fileout}} "\n";# always end include with new line
245			undef $fh;
246	williamc	1.3	$self->_includefile($fileObj, $self->{currentparser}->tagstartline(),
247			$self->{currentparser}->line(), $linecount);
248	williamc	1.1	}
249			}
250