1 # $Id: XMLDecl.pm,v 1.3 2003-07-30 13:39:22 matt Exp $
3 package XML::SAX::PurePerl;
6 use XML::SAX::PurePerl::Productions qw($S $VersionNum $EncNameStart $EncNameEnd);
9 my ($self, $reader) = @_;
11 my $data = $reader->data(5);
12 # warn("Looking for xmldecl in: $data");
13 if ($data =~ /^<\?xml$S/o) {
14 $reader->move_along(5);
15 $self->skip_whitespace($reader);
17 # get version attribute
18 $self->VersionInfo($reader) ||
19 $self->parser_error("XML Declaration lacks required version attribute, or version attribute does not match XML specification", $reader);
21 if (!$self->skip_whitespace($reader)) {
22 my $data = $reader->data(2);
23 $data =~ /^\?>/ or $self->parser_error("Syntax error", $reader);
24 $reader->move_along(2);
28 if ($self->EncodingDecl($reader)) {
29 if (!$self->skip_whitespace($reader)) {
30 my $data = $reader->data(2);
31 $data =~ /^\?>/ or $self->parser_error("Syntax error", $reader);
32 $reader->move_along(2);
37 $self->SDDecl($reader);
39 $self->skip_whitespace($reader);
41 my $data = $reader->data(2);
42 $data =~ /^\?>/ or $self->parser_error("Syntax error", $reader);
43 $reader->move_along(2);
46 # warn("first 5 bytes: ", join(',', unpack("CCCCC", $data)), "\n");
48 if (!$reader->get_encoding) {
49 $reader->set_encoding("UTF-8");
55 my ($self, $reader) = @_;
57 my $data = $reader->data(11);
59 # warn("Looking for version in $data");
61 $data =~ /^(version$S*=$S*(["'])($VersionNum)\2)/o or return 0;
62 $reader->move_along(length($1));
65 if ($vernum ne "1.0") {
66 $self->parser_error("Only XML version 1.0 supported. Saw: '$vernum'", $reader);
73 my ($self, $reader) = @_;
75 my $data = $reader->data(15);
77 $data =~ /^(standalone$S*=$S*(["'])(yes|no)\2)/o or return 0;
78 $reader->move_along(length($1));
81 if ($yesno eq 'yes') {
82 $self->{standalone} = 1;
85 $self->{standalone} = 0;
92 my ($self, $reader) = @_;
94 my $data = $reader->data(12);
96 $data =~ /^(encoding$S*=$S*(["'])($EncNameStart$EncNameEnd*)\2)/o or return 0;
97 $reader->move_along(length($1));
100 $reader->set_encoding($encoding);
106 my ($self, $reader) = @_;
108 my $data = $reader->data(6);
109 $data =~ /^<\?xml$S+/ or return;
110 $reader->move_along(5);
111 $self->skip_whitespace($reader);
113 if ($self->VersionInfo($reader)) {
114 $self->skip_whitespace($reader) ||
115 $self->parser_error("Lack of whitespace after version attribute in text declaration", $reader);
118 $self->EncodingDecl($reader) ||
119 $self->parser_error("Encoding declaration missing from external entity text declaration", $reader);
121 $self->skip_whitespace($reader);
123 $data = $reader->data(2);
124 $data =~ /^\?>/ or $self->parser_error("Syntax error", $reader);