CODEWITHSUNDEEP
perlunicodehtml-treebuilder
Nagaraju
Nagaraju

Reputation: 1875

Tree Builder issue with unicode text

I am using HTML::TreeBuilder to extract contents of a url by using tree->lookdown and then extracting text part from the string returned in lookdown method. My problem here is when I read that text and write it into a file its showing as junk. I am not able to make a progress regarding this.

My Sample Code:

use HTML::TreeBuilder;
use HTML::Element;

use utf8;

$url = $ARGV[0];
$page = `wget -qO -  "$url"| tee data.txt`;
#print "iam $page\n";
my $tree = HTML::TreeBuilder->new(  );
$tree->parse_file('data.txt');

my @story = $tree->look_down(
    _tag  => 'div',
    class => 'storydescription'
);

my @title = $tree->look_down(
    _tag  => 'title'
);

open(OUT,">","story.txt") or die"Cannot open story.txt:$!\n";
binmode(OUT,":utf8");

foreach my $story(@story) {
    print OUT $story->as_text;
}
close(OUT);

I have tried binmode for the output file handle but it was of no use and the text other than Unicode such as ascii characters prints properly into file.

Upvotes: 0

Views: 232

Answers (1)

choroba
choroba

Reputation: 241988

It's documented in HTML::TreeBuilder:

When you pass a filename to parse_file, HTML::Parser opens it in binary mode, which means it's interpreted as Latin-1 (ISO-8859-1). If the file is in another encoding, like UTF-8 or UTF-16, this will not do the right thing.

One solution is to open the file yourself using the proper :encoding layer, and pass the filehandle to parse_file. You can automate this process by using "html_file" in IO::HTML, which will use the HTML5 encoding sniffing algorithm to automatically determine the proper :encoding layer and apply it.

Upvotes: 3

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