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#
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# SimpleDoc.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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# Simple multi parsing functionality and group manipulation
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#
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# Interface
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# ---------
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# new() : A new ActiveDoc object
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# filetoparse([filename]) : Set/Return the filename of document
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# newparse(parselabel) : Create a new parse type
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# parse(parselabel) : Parse the document file for the given parse level
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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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# grouptag(tagname, parselabel) : Allow a tag to switch context
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# - if not you can never turn a context off!
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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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#
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# addignoretags(parsename) : add <ignore> </igonore> tags funtionality to the
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# specified parse
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# opengroup(name) : declare a group to be open
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# closegroup(name) : declare a group to be closed
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# allowgroup(name,parse) : allow a group so named
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# disallowgroup(name,parse) : disallow the named group
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# restoregroup(name,parse) : restore group access setting (that before last change)
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# --------------- Error handling routines ---------------
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# verbose(string) : Print string in verbosity mode
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# verbosity(0|1) : verbosity off|on
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# line() : return the current line number in the current parse
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# tagstartline() : return the line number where the current tag was
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# opened
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# parseerror(string) : print error and associate with line number etc.
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# error(string) : handle an error
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package ActiveDoc::SimpleDoc;
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require 5.004;
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use ActiveDoc::Parse;
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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->verbose("New SimpleDoc (".ref($self).") Created");
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$self->init(@_);
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return $self;
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}
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sub init {
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# dummy to be overridden by inheriting class
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}
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sub verbosity {
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my $self=shift;
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$self->{verbose}=shift;
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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 ( $self->{verbose} ) {
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print ">".ref($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->filetoparse();
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if ( -f $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 $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}->addgrouptags();
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}
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sub addignoretags {
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my $self=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->addignoretags();
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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 ) && ( $#_ != 2) ) {
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$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 filetoparse {
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my $self=shift;
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if ( @_ ) {
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$self->{filename}=shift;
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}
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return $self->{filename};
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}
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# --------- Group services
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sub grouptag {
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my $self=shift;
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my $name=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->contexttag($name);
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}
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sub opengroup {
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my $self=shift;
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my $name=shift;
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if ( defined $self->currentparser ) {
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$self->currentparser()->opencontext($name);
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}
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else {
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$self->error("Cannot Call opengroup outside of a parse (".
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caller().")");
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}
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}
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sub closegroup {
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my $self=shift;
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my $name=shift;
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if ( defined $self->currentparser ) {
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$self->currentparser()->closecontext($name);
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}
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else {
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$self->error("Cannot Call closegroup outside of a parse (".
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caller().")");
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}
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}
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sub allowgroup {
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my $self=shift;
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my $name=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->includecontext($name);
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}
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sub disallowgroup {
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my $self=shift;
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my $name=shift;
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my $parselabel=shift;
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$self->{parsers}{$parselabel}->excludecontext($name);
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}
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# -------- Error Handling and Error services --------------
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sub error {
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my $self=shift;
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my $string=shift;
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die $string."\n";
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}
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sub parseerror {
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my $self=shift;
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my $string=shift;
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if ( $self->currentparsename() eq "" ) {
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$self->error($string);
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}
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else {
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$line=$self->line();
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print "Parse Error in ".$self->filetoparse().", line ".
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$line."\n";
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print $string."\n";
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exit;
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}
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}
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sub checktag {
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my $self=shift;
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my $tagname=shift;
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my $hashref=shift;
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my $param=shift;
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if ( ! exists $$hashref{$param} ) {
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$self->parseerror("Incomplete Tag <$tagname> : $param required");
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}
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}
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sub line {
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my $self=shift;
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return $self->{currentparser}->line();
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}
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sub tagstartline {
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my $self=shift;
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return $self->{currentparser}->tagstartline();
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}
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|
