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parser.t
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use strict;
use warnings;
use utf8;
use FileHandle ();
use HTML::Parser ();
use Test::More tests => 7;
my $HTML = <<'HTML';
<!DOCTYPE HTML>
<body>
Various entities. The parser must never break them in the middle:
/
/
È
௖

å-Å
<ul>
<li><a href="foo 'bar' baz>" id=33>This is a link</a>
<li><a href='foo "bar" baz> å' id=34>This is another one</a>
</ul>
<p><div align="center"><img src="http://www.perl.com/perl.gif"
alt="camel"></div>
<!-- this is
a comment --> and this is not.
<!-- this is the kind of >comment< -- --> that Netscape hates -->
< this > was not a tag. <this is/not either>
</body>
HTML
#-------------------------------------------------------------------
{
package P;
require HTML::Parser;
our @ISA = qw(HTML::Parser);
our $OUT = '';
our $COUNT = 0;
sub new {
my $class = shift;
my $self = $class->SUPER::new;
$OUT = '';
die "Can only have one" if $COUNT++;
$self;
}
sub DESTROY {
my $self = shift;
eval { $self->SUPER::DESTROY; };
$COUNT--;
}
sub declaration {
my ($self, $decl) = @_;
$OUT .= "[[$decl]]|";
}
sub start {
my ($self, $tag, $attr) = @_;
$attr = join("/", map { "$_=" . ( defined $attr->{$_} ? $attr->{$_} : '<undef>' ) } sort keys %$attr);
$attr = "/$attr" if length $attr;
$OUT .= "<<$tag$attr>>|";
}
sub end {
my ($self, $tag) = @_;
$OUT .= ">>$tag<<|";
}
sub comment {
my ($self, $comment) = @_;
$OUT .= "##$comment##|";
}
sub text {
my ($self, $text) = @_;
#$text =~ s/\n/\\n/g;
#$text =~ s/\t/\\t/g;
#$text =~ s/ /�/g;
$OUT .= "$text|";
}
sub result {
$OUT;
}
}
my $last_res;
for my $chunksize (64 * 1024, 64, 13, 3, 1, "file", "filehandle") {
#for $chunksize (1) {
if ($chunksize =~ /^file/) {
#print "Parsing from $chunksize";
}
else {
#print "Parsing using $chunksize byte chunks";
}
my $p = P->new;
if ($chunksize =~ /^file/) {
# First we must create the file
my $tmpfile = "tmp-$$.html";
my $file = $tmpfile;
die "$file already exists" if -e $file;
open(my $fh, '>', $file) or die "Can't create $file: $!";
binmode $fh;
print {$fh} $HTML;
close($fh);
if ($chunksize eq "filehandle") {
my $fh = FileHandle->new($file) || die "Can't open $file: $!";
$file = $fh;
}
# then we can parse it.
$p->parse_file($file);
close $file if $chunksize eq "filehandle";
unlink($tmpfile) || warn "Can't unlink $tmpfile: $!";
}
else {
my $copy = $HTML;
while (length $copy) {
my $chunk = substr($copy, 0, $chunksize);
substr($copy, 0, $chunksize) = '';
$p->parse($chunk);
}
$p->eof;
}
my $res = $p->result;
my $bad;
# Then we start looking for things that should not happen
if ($res =~ /\s\|\s/) {
diag "broken space";
$bad++;
}
for (
# Make sure entities are not broken
'/', '/', 'È', '௖', '', 'å', 'Å',
# Some elements that should be produced
"|[[DOCTYPE HTML]]|", "|## this is\na comment ##|",
"|<<ul>>|\n|<<li>>|<<a/href=foo 'bar' baz>/id=33>>|",
'|<<li>>|<<a/href=foo "bar" baz> å/id=34>>', "|>>ul<<|",
"|>>body<<|\n\n|",
)
{
if ($res !~ /\Q$_\E/) {
diag "Can't find '$_' in parsed document";
$bad++;
}
}
diag $res if $bad || $ENV{PRINT_RESULTS};
# And we check that we get the same result all the time
$res =~ s/\|//g; # remove all break marks
if ($last_res && $res ne $last_res) {
diag "The result is not the same as last time";
$bad++;
}
$last_res = $res;
unless ($res =~ /Various entities/) {
diag "Some text must be missing";
$bad++;
}
ok(!$bad);
}