Add routine to remove invisible nodes

Readability was previously removing (was trying to actually, see next
section) invisible nodes using a pattern from `unlikelyCandidates`. This
was quite hacky and was removed during a backport of logics from
mozilla/readability. There is still a need to remove them so here we
are. We still use a pattern but specifically against the style
attribute. We also remove nodes with the attribute `hidden`.

The clean feature of tidy actually replaces inline style attributes
with css classes thus preventing readability to detect invisible nodes,
see https://github.com/htacg/tidy-html5/blob/5.6.0/src/clean.c#L1488
We therefore set clean configuration to false.

Signed-off-by: Kevin Decherf <kevin@kdecherf.com>
This commit is contained in:
Kevin Decherf
2022-02-04 01:23:11 +01:00
parent b580cf216d
commit a44c4e5482
2 changed files with 66 additions and 1 deletions
+42
View File
@@ -499,6 +499,48 @@ class ReadabilityTest extends \PHPUnit\Framework\TestCase
$this->assertStringContainsString('<a href="alice-I.html">Down the Rabbit-Hole</a>', $readability->getContent()->getInnerHtml());
}
public function dataForVisibleNode(): array
{
return [
'visible node' => [
'<div>' . str_repeat('<p>This <b>is</b> the awesome and WONDERFUL content :)</p>', 7) . '</div>',
true,
],
'display=none' => [
'<div style="display:none;">' . str_repeat('<p>This <b>is</b> the awesome and WONDERFUL content :)</p>', 7) . '</div>',
false,
],
'display=inline' => [
'<div style="display:inline;">' . str_repeat('<p>This <b>is</b> the awesome and WONDERFUL content :)</p>', 7) . '</div>',
true,
],
'hidden attribute' => [
'<div hidden>' . str_repeat('<p>This <b>is</b> the awesome and WONDERFUL content :)</p>', 7) . '</div>',
false,
],
'missing display' => [
'<div style="color:#ccc;">' . str_repeat('<p>This <b>is</b> the awesome and WONDERFUL content :)</p>', 7) . '</div>',
true,
],
];
}
/**
* @dataProvider dataForVisibleNode
*/
public function testVisibleNode(string $content, bool $shouldBeVisible): void
{
$readability = $this->getReadability($content, 'http://0.0.0.0');
$readability->debug = true;
$res = $readability->init();
if ($shouldBeVisible) {
$this->assertStringContainsString('WONDERFUL content', $readability->getContent()->getInnerHtml());
} else {
$this->assertStringNotContainsString('WONDERFUL content', $readability->getContent()->getInnerHtml());
}
}
private function getReadability(string $html, string $url = null, string $parser = 'libxml', bool $useTidy = true): Readability
{
$readability = new Readability($html, $url, $parser, $useTidy);