xle/tt-rss
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add limited highlighting of filter test results based on matched rules

Browse Source
This commit is contained in:
Andrew Dolgov
2025-03-28 07:59:46 +03:00
parent 49766ab01f
commit 8986a3e7ee
4 changed files with 97 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
classes/Sanitizer.php
View File

@@ -59,6 +59,65 @@ class Sanitizer {
return parse_url(Config::get_self_url(), PHP_URL_SCHEME) == 'https';
}
/** @param array<string> $words */
public static function highlight_words_str(string $str, array $words) : string {
$doc = new DOMDocument();
if ($doc->loadHTML('<?xml encoding="UTF-8"><span>' . $str . '</span>')) {
$xpath = new DOMXPath($doc);
if (self::highlight_words($doc, $xpath, $words)) {
$res = $doc->saveHTML();
/* strip everything outside of <body>...</body> */
$res_frag = array();
if (preg_match('/<body>(.*)<\/body>/is', $res, $res_frag)) {
return $res_frag[1];
} else {
return $res;
}
}
}
return $str;
}
/** @param array<string> $words */
public static function highlight_words(DOMDocument &$doc, DOMXPath $xpath, array $words) : bool {
$rv = false;
foreach ($words as $word) {
// http://stackoverflow.com/questions/4081372/highlight-keywords-in-a-paragraph
$elements = $xpath->query("//*/text()");
foreach ($elements as $child) {
$fragment = $doc->createDocumentFragment();
$text = $child->textContent;
while (($pos = mb_stripos($text, $word)) !== false) {
$fragment->appendChild(new DOMText(mb_substr($text, 0, (int)$pos)));
$word = mb_substr($text, (int)$pos, mb_strlen($word));
$highlight = $doc->createElement('span');
$highlight->appendChild(new DOMText($word));
$highlight->setAttribute('class', 'highlight');
$fragment->appendChild($highlight);
$text = mb_substr($text, $pos + mb_strlen($word));
}
if (!empty($text)) $fragment->appendChild(new DOMText($text));
$child->parentNode->replaceChild($fragment, $child);
$rv = true;
}
}
return $rv;
}
/**
* @param array<int, string>|null $highlight_words Words to highlight in the HTML output.
*
@@ -197,34 +256,8 @@ class Sanitizer {
$div->appendChild($entry);
}
if (is_array($highlight_words)) {
foreach ($highlight_words as $word) {
// http://stackoverflow.com/questions/4081372/highlight-keywords-in-a-paragraph
$elements = $xpath->query("//*/text()");
foreach ($elements as $child) {
$fragment = $doc->createDocumentFragment();
$text = $child->textContent;
while (($pos = mb_stripos($text, $word)) !== false) {
$fragment->appendChild(new DOMText(mb_substr($text, 0, (int)$pos)));
$word = mb_substr($text, (int)$pos, mb_strlen($word));
$highlight = $doc->createElement('span');
$highlight->appendChild(new DOMText($word));
$highlight->setAttribute('class', 'highlight');
$fragment->appendChild($highlight);
$text = mb_substr($text, $pos + mb_strlen($word));
}
if (!empty($text)) $fragment->appendChild(new DOMText($text));
$child->parentNode->replaceChild($fragment, $child);
}
}
}
if (is_array($highlight_words))
self::highlight_words($doc, $xpath, $highlight_words);
$res = $doc->saveHTML();