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#
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# ActiveDoc.pm
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#
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# Originally Written by Christopher Williams
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#
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# Description
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#
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# Interface
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# ---------
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# new(ActiveConfig[,options]) : A new ActiveDoc object
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# url() : Return/set the docs url - essential
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# file() : Return the local filename of document
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# ProcessFile() : Return the filename of PreProcessed document
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#
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# parse(parselabel): Parse the document file for the given parse level
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# parent() : return the object ref of the calling parent
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# newparse(parselabel) : Create a new parse type
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# addtag(parselabel,tagname,start,obj,text,obj,end,obj)
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# : Add tags to the parse given by label
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# checktag(tagname, hashref, param) : check for existence of param in
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# hashref from a tag call
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# includeparse(local_parsename, objparsename, activedoc) : copy the parse from
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# one object to another
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# currentparser() : return the current parser object
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# currentparsename([name]) : get/set current parse name
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# getfile(url) : get a processedfile object given a url
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# activatedoc(url) : Return the object ref for a doc described by the given url
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# -- any parse called "init" will also be run
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# config([ActiveConfig]) : Set up/return Configuration for the document
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# basequery([ActiveConfig]) : Set up/return UserQuery for the doc
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# copydocconfig(ActiveDoc) : Copy the basic configuration from the ActiveDoc
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# copydocquery(ActiveDoc) : Copy the basicquery from the ActiveDoc
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# userinterface() : Return the defaullt userinterface
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# option(var) : return the value of the option var ( or undef )
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# requestoption("message") : Ask the user to supply a value for an option
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# if it dosnt already exist
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# askuser(Query) : send a query object to the userinterface
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# verbose(string) : Print string in verbosity mode
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#
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# -- error methods --
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# error(string) : Report an general error to the user
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# parseerror(string) : Report an error during parsing a file
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# line() : Return the current line number of the document
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# and the ProcessedFileObj it is in
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#
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# -- support for inheriting classes
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# _saveactivedoc(filehandle)
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# _restoreactivedoc(filehandle)
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package ActiveDoc::ActiveDoc;
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require 5.004;
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use ActiveDoc::Parse;
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use ActiveDoc::ActiveConfig;
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use ActiveDoc::PreProcessedFile;
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use ObjectUtilities::StorableObject;
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use URL::URLhandler;
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@ISA = qw(ObjectUtilities::StorableObject);
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sub new {
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my $class=shift;
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$self={};
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bless $self, $class;
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$self->config(shift);
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# have some override options been passed
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if ( @_ ) {
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$self->basequery(shift);
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}
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else {
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# --- is there a starter document?
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my $basedoc=$self->config()->basedoc();
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if ( defined $basedoc ) {
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$self->copydocquery($basedoc);
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$self->verbose("Initialising from $basedoc");
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}
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else {
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$self->error("ActiveDoc Error : No base doc found");
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}
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}
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$self->verbose("New ActiveDoc (".ref($self).") Created");
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$self->_init2();
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}
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sub _init2 {
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my $self=shift;
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# A URL handler per document
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$self->{urlhandler}=URL::URLhandler->new($self->config()->cache());
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# A default UserInterface
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$self->{userinterface}=ActiveDoc::SimpleUserInterface->new();
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$self->init(@_);
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return $self;
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}
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sub verbose {
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my $self=shift;
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my $string=shift;
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if ( $self->option('verbose_all') ||
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$self->option('verbose_'.ref($self)) ) {
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print ">".ref($self)."($self) : \n->".$string."\n";
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}
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}
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# ----- parse related routines --------------
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sub parse {
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my $self=shift;
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$parselabel=shift;
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my $file=$self->ProcessFile();
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if ( $file ) {
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if ( exists $self->{parsers}{$parselabel} ) {
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$self->verbose("Parsing $parselabel in file $file");
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$self->{currentparsename}=$parselabel;
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$self->{currentparser}=$self->{parsers}{$parselabel};
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$self->{parsers}{$parselabel}->parse($file,@_);
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delete $self->{currentparser};
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$self->{currentparsename}="";
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$self->verbose("Parse $parselabel Complete");
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}
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}
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else {
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$self->error("Cannot parse $parselabel - file not known");
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}
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}
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sub currentparsename {
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my $self=shift;
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@_?$self->{currentparsename}=shift
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:(defined $self->{currentparsename}?$self->{currentparsename}:"");
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}
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sub currentparser {
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my $self=shift;
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return $self->{currentparser};
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}
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sub newparse {
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my $self=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}=ActiveDoc::Parse->new();
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$self->{parsers}{$parselabel}->addignoretags();
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$self->{parsers}{$parselabel}->addgrouptags();
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}
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sub cleartags {
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my $self=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->cleartags();
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}
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sub includeparse {
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my $self=shift;
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my $parselabel=shift;
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my $remoteparselabel=shift;
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my $activedoc=shift;
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# Some error trapping
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if ( ! exists $self->{parsers}{$parselabel} ) {
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$self->error("Unknown local parse name specified");
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}
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if ( ! exists $activedoc->{parsers}{$remoteparselabel} ) {
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$self->error("Unknown parse name specified in remote obj $activedoc");
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}
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#
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my $rp=$activedoc->{parsers}{$remoteparselabel};
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$self->{parsers}{$parselabel}->includeparse($rp);
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}
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sub addtag {
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my $self=shift;
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my $parselabel=shift;
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if ( $#_ != 6 ) {
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$self->error("Incorrect addtags specification\n".
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"called with :\n@_ \n");
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}
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$self->{parsers}{$parselabel}->addtag(@_);
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}
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sub addurltags {
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my $self=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->
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addtag("Base", \&Base_start, $self, "", $self,
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\&Base_end, $self);
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}
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sub url {
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my $self=shift;
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# get file & preprocess
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if ( @_ ) {
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$self->{File}=$self->getfile(shift);
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$self->verbose("url downloaded to $self->{File}");
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}
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if ( defined $self->{File} ) {
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return $self->{File}->url();
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}
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else { return "undefined"; }
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}
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sub copydocconfig {
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my $self=shift;
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my $ActiveDoc=shift;
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$self->config($ActiveDoc->config());
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}
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sub copydocquery {
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my $self=shift;
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my $ActiveDoc=shift;
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if ( defined $ActiveDoc->basequery() ) {
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$self->basequery($ActiveDoc->basequery());
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}
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else {
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$self->error("Cannot copy basequery - undefined");
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}
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}
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sub config {
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my $self=shift;
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@_?$self->{ActiveConfig}=shift
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: $self->{ActiveConfig};
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}
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sub basequery {
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my $self=shift;
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@_?$self->{Query}=shift
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:$self->{Query};
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}
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sub option {
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my $self=shift;
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my $param=shift;
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if ( defined $self->basequery()) {
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return $self->basequery()->getparam($param);
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}
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else {
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return $undef;
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}
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}
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sub requestoption {
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my $self=shift;
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my $param=shift;
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my $string=shift;
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my $par=undef;
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if ( defined $self->basequery()) {
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$par=$self->basequery()->getparam($param);
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while ( ! defined $par ) {
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$self->basequery()->querytype( $param, "basic");
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$self->basequery()->querymessage( $param, $string);
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$self->userinterface()->askuser($self->basequery());
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$par=$self->basequery()->getparam($param);
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}
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}
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return $par;
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}
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sub askuser {
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my $self=shift;
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return $self->userinterface()->askuser(@_);
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}
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sub getfile {
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my $self=shift;
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my $origurl=shift;
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my $fileref;
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my ($url, $file);
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if ( (defined ($it=$self->option('url_update'))) &&
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( $it eq "1" || $origurl=~/^$it/ )) {
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$self->verbose("Forced download of $origurl");
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($url, $file)=$self->{urlhandler}->download($origurl);
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}
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else {
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$self->verbose("Attempting to get $origurl");
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($url, $file)=$self->{urlhandler}->get($origurl);
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}
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# do we already have an appropriate object?
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($fileref)=$self->config()->find($url);
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#undef $fileref;
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if ( defined $fileref ) {
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$self->verbose("Found $url in database");
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$fileref->update();
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}
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else {
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| 299 |
if ( $file eq "" ) {
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$self->parseerror("Unable to get $origurl");
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}
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#-- set up a new preprocess file
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$self->verbose("Making a new preprocessed file $url");
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$fileref=ActiveDoc::PreProcessedFile->new($self->config());
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$fileref->url($url);
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$fileref->update();
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}
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return $fileref;
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}
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sub activatedoc {
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my $self=shift;
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my $url=shift;
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# first get a preprocessed copy of the file
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# my $fileob=$self->getfile($url);
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# now parse it for the <DocType> tag
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my $tempdoc=ActiveDoc::ActiveDoc->new($self->config());
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$tempdoc->{urlhandler}=$self->{urlhandler};
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my $fullurl=$tempdoc->url($url);
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$url=$fullurl;
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$tempdoc->{doctypefound}=0;
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$tempdoc->newparse("doctype");
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$tempdoc->addtag("doctype","Doc", \&Doc_Start, $tempdoc,
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"", $tempdoc, "", $tempdoc);
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| 327 |
$tempdoc->parse("doctype");
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| 328 |
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| 329 |
if ( ! defined $tempdoc->{docobject} ) {
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| 330 |
print "No <Doc type=> Specified in ".$url."\n";
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| 331 |
exit 1;
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}
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# Set up a new object of the specified type
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| 334 |
eval "require $tempdoc->{docobject}";
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die $@ if $@;
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| 336 |
my $newobj=$tempdoc->{docobject}->new($self->config());
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| 337 |
undef $tempdoc;
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| 338 |
$newobj->url($url);
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| 339 |
$newobj->parent($self);
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| 340 |
$newobj->_initparse();
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| 341 |
return $newobj;
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| 342 |
}
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| 343 |
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| 344 |
sub parent {
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| 345 |
my $self=shift;
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| 346 |
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| 347 |
@_?$self->{parent}=shift
|
| 348 |
:$self->{parent};
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| 349 |
}
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| 350 |
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| 351 |
sub _initparse {
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| 352 |
my $self=shift;
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| 353 |
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| 354 |
$self->parse("init");
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| 355 |
}
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# -------- Error Handling and Error services --------------
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| 357 |
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| 358 |
sub error {
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| 359 |
my $self=shift;
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| 360 |
my $string=shift;
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| 361 |
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| 362 |
die $string."\n";
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}
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| 364 |
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| 365 |
sub parseerror {
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| 366 |
my $self=shift;
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| 367 |
my $string=shift;
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| 368 |
|
| 369 |
if ( $self->currentparsename() eq "" ) {
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| 370 |
$self->error($string);
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| 371 |
}
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| 372 |
else {
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| 373 |
($line, $file)=$self->line();
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| 374 |
print "Parse Error in ".$file->url().", line ".
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| 375 |
$line."\n";
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| 376 |
print $string."\n";
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| 377 |
exit;
|
| 378 |
}
|
| 379 |
}
|
| 380 |
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| 381 |
sub checktag {
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| 382 |
my $self=shift;
|
| 383 |
my $tagname=shift;
|
| 384 |
my $hashref=shift;
|
| 385 |
my $param=shift;
|
| 386 |
|
| 387 |
if ( ! exists $$hashref{$param} ) {
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| 388 |
$self->parseerror("Incomplete Tag <$tagname> : $param required");
|
| 389 |
}
|
| 390 |
}
|
| 391 |
|
| 392 |
sub line {
|
| 393 |
my $self=shift;
|
| 394 |
|
| 395 |
my ($line, $fileobj)=
|
| 396 |
$self->{File}->realline($self->{currentparser}->line());
|
| 397 |
return ($line, $fileobj);
|
| 398 |
}
|
| 399 |
|
| 400 |
sub tagstartline {
|
| 401 |
my $self=shift;
|
| 402 |
my ($line, $fileobj)=$self->{File}->line(
|
| 403 |
$self->{currentparser}->tagstartline());
|
| 404 |
return ($line, $fileobj);
|
| 405 |
}
|
| 406 |
|
| 407 |
sub file {
|
| 408 |
my $self=shift;
|
| 409 |
|
| 410 |
$self->{File}->file();
|
| 411 |
}
|
| 412 |
|
| 413 |
sub ProcessFile {
|
| 414 |
my $self=shift;
|
| 415 |
|
| 416 |
return $self->{File}->ProcessedFile();
|
| 417 |
}
|
| 418 |
|
| 419 |
# --------------- Initialisation Methods ---------------------------
|
| 420 |
|
| 421 |
sub init {
|
| 422 |
# Dummy Routine - override for derived classes
|
| 423 |
}
|
| 424 |
|
| 425 |
# ------------------- Tag Routines -----------------------------------
|
| 426 |
#
|
| 427 |
# Base - for setting url bases
|
| 428 |
#
|
| 429 |
sub Base_start {
|
| 430 |
my $self=shift;
|
| 431 |
my $name=shift;
|
| 432 |
my $hashref=shift;
|
| 433 |
|
| 434 |
$self->checktag($name, $hashref, 'type' );
|
| 435 |
$self->checktag($name, $hashref, 'base' );
|
| 436 |
|
| 437 |
# Keep track of base tags
|
| 438 |
push @{$self->{basestack}}, $$hashref{"type"};
|
| 439 |
# Set the base
|
| 440 |
$self->{urlhandler}->setbase($$hashref{"type"},$hashref);
|
| 441 |
}
|
| 442 |
|
| 443 |
sub Base_end {
|
| 444 |
my $self=shift;
|
| 445 |
my $name=shift;
|
| 446 |
my $type;
|
| 447 |
|
| 448 |
if ( $#{$self->{basestack}} == -1 ) {
|
| 449 |
$self->parseerror("Parse Error : unmatched </$name>");
|
| 450 |
}
|
| 451 |
else {
|
| 452 |
$type = pop @{$self->{basestack}};
|
| 453 |
$self->{urlhandler}->unsetbase($type);
|
| 454 |
}
|
| 455 |
}
|
| 456 |
|
| 457 |
sub Doc_Start {
|
| 458 |
my $self=shift;
|
| 459 |
my $name=shift;
|
| 460 |
my $hashref=shift;
|
| 461 |
|
| 462 |
$self->checktag($name, $hashref, "type");
|
| 463 |
$self->{doctypefound}++;
|
| 464 |
if ( $self->{doctypefound} == 1 ) { # only take first doctype
|
| 465 |
$self->{docobject}=$$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 |
}
|
