/usr/share/perl5/XML/SAX/PurePerl/DocType.pm is in libxml-sax-perl 0.99+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | # $Id$
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 Sytem 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;
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