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Edit File : DocType.pm \| Size : 4.55 KB
# $Id$ package XML::SAX::PurePerl; use strict; use XML::SAX::PurePerl::Productions qw($PubidChar); sub doctypedecl { my ($self, $reader) = @_; my $data = $reader->data(9); if ($data =~ /^<!DOCTYPE/) { $reader->move_along(9); $self->skip_whitespace($reader) \|\| $self->parser_error("No whitespace after doctype declaration", $reader); my $root_name = $self->Name($reader) \|\| $self->parser_error("Doctype declaration has no root element name", $reader); if ($self->skip_whitespace($reader)) { # might be externalid... my %dtd = $self->ExternalID($reader); # TODO: Call SAX event } $self->skip_whitespace($reader); $self->InternalSubset($reader); $reader->match('>') or $self->parser_error("Doctype not closed", $reader); return 1; } return 0; } sub ExternalID { my ($self, $reader) = @_; my $data = $reader->data(6); if ($data =~ /^SYSTEM/) { $reader->move_along(6); $self->skip_whitespace($reader) \|\| $self->parser_error("No whitespace after SYSTEM identifier", $reader); return (SYSTEM => $self->SystemLiteral($reader)); } elsif ($data =~ /^PUBLIC/) { $reader->move_along(6); $self->skip_whitespace($reader) \|\| $self->parser_error("No whitespace after PUBLIC identifier", $reader); my $quote = $self->quote($reader) \|\| $self->parser_error("Not a quote character in PUBLIC identifier", $reader); my $data = $reader->data; my $pubid = ''; while(1) { $self->parser_error("EOF while looking for end of PUBLIC identifiier", $reader) unless length($data); if ($data =~ /^([^$quote])$quote/) { $pubid .= $1; $reader->move_along(length($1) + 1); last; } else { $pubid .= $data; $reader->move_along(length($data)); $data = $reader->data; } } if ($pubid !~ /^($PubidChar)+$/) { $self->parser_error("Invalid characters in PUBLIC identifier", $reader); } $self->skip_whitespace($reader) \|\| $self->parser_error("Not whitespace after PUBLIC ID in DOCTYPE", $reader); return (PUBLIC => $pubid, SYSTEM => $self->SystemLiteral($reader)); } else { return; } return 1; } sub SystemLiteral { my ($self, $reader) = @_; my $quote = $self->quote($reader); my $data = $reader->data; my $systemid = ''; while (1) { $self->parser_error("EOF found while looking for end of System Literal", $reader) unless length($data); if ($data =~ /^([^$quote])$quote/) { $systemid .= $1; $reader->move_along(length($1) + 1); return $systemid; } else { $systemid .= $data; $reader->move_along(length($data)); $data = $reader->data; } } } sub InternalSubset { my ($self, $reader) = @_; return 0 unless $reader->match('['); 1 while $self->IntSubsetDecl($reader); $reader->match(']') or $self->parser_error("No close bracket on internal subset (found: " . $reader->data, $reader); $self->skip_whitespace($reader); return 1; } sub IntSubsetDecl { my ($self, $reader) = @_; return $self->DeclSep($reader) \|\| $self->markupdecl($reader); } sub DeclSep { my ($self, $reader) = @_; if ($self->skip_whitespace($reader)) { return 1; } if ($self->PEReference($reader)) { return 1; } # if ($self->ParsedExtSubset($reader)) { # return 1; # } return 0; } sub PEReference { my ($self, $reader) = @_; return 0 unless $reader->match('%'); my $peref = $self->Name($reader) \|\| $self->parser_error("PEReference did not find a Name", $reader); # TODO - load/parse the peref $reader->match(';') or $self->parser_error("Invalid token in PEReference", $reader); return 1; } sub markupdecl { my ($self, $reader) = @_; if ($self->elementdecl($reader) \|\| $self->AttlistDecl($reader) \|\| $self->EntityDecl($reader) \|\| $self->NotationDecl($reader) \|\| $self->PI($reader) \|\| $self->Comment($reader)) { return 1; } return 0; } 1; Back

Edit File : DocType.pm | Size : 4.55 KB

# $Id$

package XML::SAX::PurePerl;

use strict;
use XML::SAX::PurePerl::Productions qw($PubidChar);

sub doctypedecl {
    my ($self, $reader) = @_;
    
    my $data = $reader->data(9);
    if ($data =~ /^<!DOCTYPE/) {
        $reader->move_along(9);
        $self->skip_whitespace($reader) ||
            $self->parser_error("No whitespace after doctype declaration", $reader);
        
        my $root_name = $self->Name($reader) ||
            $self->parser_error("Doctype declaration has no root element name", $reader);
        
        if ($self->skip_whitespace($reader)) {
            # might be externalid...
            my %dtd = $self->ExternalID($reader);
            # TODO: Call SAX event
        }
        
        $self->skip_whitespace($reader);
        
        $self->InternalSubset($reader);
        
        $reader->match('>') or $self->parser_error("Doctype not closed", $reader);
        
        return 1;
    }
    
    return 0;
}

sub ExternalID {
    my ($self, $reader) = @_;
    
    my $data = $reader->data(6);
    
    if ($data =~ /^SYSTEM/) {
        $reader->move_along(6);
        $self->skip_whitespace($reader) ||
            $self->parser_error("No whitespace after SYSTEM identifier", $reader);
        return (SYSTEM => $self->SystemLiteral($reader));
    }
    elsif ($data =~ /^PUBLIC/) {
        $reader->move_along(6);
        $self->skip_whitespace($reader) ||
            $self->parser_error("No whitespace after PUBLIC identifier", $reader);
        
        my $quote = $self->quote($reader) || 
            $self->parser_error("Not a quote character in PUBLIC identifier", $reader);
        
        my $data = $reader->data;
        my $pubid = '';
        while(1) {
            $self->parser_error("EOF while looking for end of PUBLIC identifiier", $reader)
                unless length($data);
            
            if ($data =~ /^([^$quote]*)$quote/) {
                $pubid .= $1;
                $reader->move_along(length($1) + 1);
                last;
            }
            else {
                $pubid .= $data;
                $reader->move_along(length($data));
                $data = $reader->data;
            }
        }
        
        if ($pubid !~ /^($PubidChar)+$/) {
            $self->parser_error("Invalid characters in PUBLIC identifier", $reader);
        }
        
        $self->skip_whitespace($reader) ||
            $self->parser_error("Not whitespace after PUBLIC ID in DOCTYPE", $reader);
        
        return (PUBLIC => $pubid, 
                SYSTEM => $self->SystemLiteral($reader));
    }
    else {
        return;
    }
    
    return 1;
}

sub SystemLiteral {
    my ($self, $reader) = @_;
    
    my $quote = $self->quote($reader);
    
    my $data = $reader->data;
    my $systemid = '';
    while (1) {
        $self->parser_error("EOF found while looking for end of System Literal", $reader)
            unless length($data);
        if ($data =~ /^([^$quote]*)$quote/) {
            $systemid .= $1;
            $reader->move_along(length($1) + 1);
            return $systemid;
        }
        else {
            $systemid .= $data;
            $reader->move_along(length($data));
            $data = $reader->data;
        }
    }
}

sub InternalSubset {
    my ($self, $reader) = @_;
    
    return 0 unless $reader->match('[');
    
    1 while $self->IntSubsetDecl($reader);
    
    $reader->match(']') or $self->parser_error("No close bracket on internal subset (found: " . $reader->data, $reader);
    $self->skip_whitespace($reader);
    return 1;
}

sub IntSubsetDecl {
    my ($self, $reader) = @_;

return $self->DeclSep($reader) || $self->markupdecl($reader);
}

sub DeclSep {
    my ($self, $reader) = @_;

if ($self->skip_whitespace($reader)) {
        return 1;
    }

if ($self->PEReference($reader)) {
        return 1;
    }
    
#    if ($self->ParsedExtSubset($reader)) {
#        return 1;
#    }
    
    return 0;
}

sub PEReference {
    my ($self, $reader) = @_;
    
    return 0 unless $reader->match('%');
    
    my $peref = $self->Name($reader) ||
        $self->parser_error("PEReference did not find a Name", $reader);
    # TODO - load/parse the peref
    
    $reader->match(';') or $self->parser_error("Invalid token in PEReference", $reader);
    return 1;
}

sub markupdecl {
    my ($self, $reader) = @_;
    
    if ($self->elementdecl($reader) ||
        $self->AttlistDecl($reader) ||
        $self->EntityDecl($reader) ||
        $self->NotationDecl($reader) ||
        $self->PI($reader) ||
        $self->Comment($reader))
    {
        return 1;
    }
    
    return 0;
}

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