.
*
*/
namespace Friendica\Content\Text;
use DOMDocument;
use DOMXPath;
use Friendica\Content\Widget\ContactBlock;
use Friendica\Core\Hook;
use Friendica\Core\Renderer;
use Friendica\Core\Search;
use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Util\Network;
use Friendica\Util\Strings;
use Friendica\Util\XML;
use League\HTMLToMarkdown\HtmlConverter;
use Psr\Http\Message\UriInterface;
class HTML
{
/**
* Search all instances of a specific HTML tag node in the provided DOM document and replaces them with BBCode text nodes.
*
* @see HTML::tagToBBCodeSub()
*/
private static function tagToBBCode(DOMDocument $doc, string $tag, array $attributes, string $startbb, string $endbb, bool $ignoreChildren = false)
{
do {
$done = self::tagToBBCodeSub($doc, $tag, $attributes, $startbb, $endbb, $ignoreChildren);
} while ($done);
}
/**
* Search the first specific HTML tag node in the provided DOM document and replaces it with BBCode text nodes.
*
* @param DOMDocument $doc
* @param string $tag HTML tag name
* @param array $attributes Array of attributes to match and optionally use the value from
* @param string $startbb BBCode tag opening
* @param string $endbb BBCode tag closing
* @param bool $ignoreChildren If set to false, the HTML tag children will be appended as text inside the BBCode tag
* Otherwise, they will be entirely ignored. Useful for simple BBCode that draw their
* inner value from an attribute value and disregard the tag children.
* @return bool Whether a replacement was done
*/
private static function tagToBBCodeSub(DOMDocument $doc, string $tag, array $attributes, string $startbb, string $endbb, bool $ignoreChildren = false): bool
{
$savestart = str_replace('$', '\x01', $startbb);
$replace = false;
$xpath = new DOMXPath($doc);
/** @var \DOMNode[] $list */
$list = $xpath->query("//" . $tag);
foreach ($list as $node) {
$attr = [];
if ($node->attributes->length) {
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
}
$replace = true;
$startbb = $savestart;
$i = 0;
foreach ($attributes as $attribute => $value) {
$startbb = str_replace('\x01' . ++$i, '$1', $startbb);
if (strpos('*' . $startbb, '$1') > 0) {
if ($replace && (@$attr[$attribute] != '')) {
$startbb = preg_replace($value, $startbb, $attr[$attribute], -1, $count);
// If nothing could be changed
if ($count == 0) {
$replace = false;
}
} else {
$replace = false;
}
} else {
if (@$attr[$attribute] != $value) {
$replace = false;
}
}
}
if ($replace) {
$StartCode = $doc->createTextNode($startbb);
$EndCode = $doc->createTextNode($endbb);
$node->parentNode->insertBefore($StartCode, $node);
if (!$ignoreChildren && $node->hasChildNodes()) {
/** @var \DOMNode $child */
foreach ($node->childNodes as $key => $child) {
/* Remove empty text nodes at the start or at the end of the children list */
if ($key > 0 && $key < $node->childNodes->length - 1 || $child->nodeName != '#text' || trim($child->nodeValue) !== '') {
$newNode = $child->cloneNode(true);
$node->parentNode->insertBefore($newNode, $node);
}
}
}
$node->parentNode->insertBefore($EndCode, $node);
$node->parentNode->removeChild($node);
}
}
return $replace;
}
/**
* Converter for HTML to BBCode
*
* Made by: ike@piratenpartei.de
* Originally made for the syncom project: http://wiki.piratenpartei.de/Syncom
* https://github.com/annando/Syncom
*
* @param string $message
* @param string $basepath
* @return string
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function toBBCode(string $message, string $basepath = ''): string
{
/*
* Check if message is empty to prevent a lot of code below from being executed
* for just an empty message.
*/
if ($message === '') {
return '';
}
DI::profiler()->startRecording('rendering');
$message = str_replace("\r", "", $message);
$message = Strings::performWithEscapedBlocks($message, '#
#iUs', function ($message) {
$message = str_replace(
[
"",
"
",
],
[
"",
"",
],
$message
);
// remove namespaces
$message = preg_replace('=<(\w+):(.+?)>=', '', $message);
$message = preg_replace('==', '', $message);
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
$message = mb_convert_encoding($message, 'HTML-ENTITIES', "UTF-8");
if (empty($message)) {
return '';
}
@$doc->loadHTML($message, LIBXML_HTML_NODEFDTD);
XML::deleteNode($doc, 'style');
XML::deleteNode($doc, 'head');
XML::deleteNode($doc, 'title');
XML::deleteNode($doc, 'meta');
XML::deleteNode($doc, 'xml');
XML::deleteNode($doc, 'removeme');
$xpath = new DomXPath($doc);
$list = $xpath->query("//pre");
foreach ($list as $node) {
// Ensure to escape unescaped & - they will otherwise raise a warning
$safe_value = preg_replace('/&(?!\w+;)/', '&', $node->nodeValue);
$node->nodeValue = str_replace("\n", "\r", $safe_value);
}
$message = $doc->saveHTML();
$message = str_replace(["\n<", ">\n", "\r", "\n", "\xC3\x82\xC2\xA0"], ["<", ">", "
", " ", ""], $message);
$message = preg_replace('= [\s]*=i', " ", $message);
if (empty($message)) {
return '';
}
@$doc->loadHTML($message, LIBXML_HTML_NODEFDTD);
self::tagToBBCode($doc, 'html', [], "", "");
self::tagToBBCode($doc, 'body', [], "", "");
// Outlook-Quote - Variant 1
self::tagToBBCode($doc, 'p', ['class' => 'MsoNormal', 'style' => 'margin-left:35.4pt'], '[quote]', '[/quote]');
// Outlook-Quote - Variant 2
self::tagToBBCode(
$doc,
'div',
['style' => 'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'],
'[quote]',
'[/quote]'
);
// MyBB-Stuff
self::tagToBBCode($doc, 'span', ['style' => 'text-decoration: underline;'], '[u]', '[/u]');
self::tagToBBCode($doc, 'span', ['style' => 'font-style: italic;'], '[i]', '[/i]');
self::tagToBBCode($doc, 'span', ['style' => 'font-weight: bold;'], '[b]', '[/b]');
/* self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'size'=>'/(\d+)/', 'color'=>'/(.+)/'), '[font=$1][size=$2][color=$3]', '[/color][/size][/font]');
self::node2BBCode($doc, 'font', array('size'=>'/(\d+)/', 'color'=>'/(.+)/'), '[size=$1][color=$2]', '[/color][/size]');
self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'size'=>'/(.+)/'), '[font=$1][size=$2]', '[/size][/font]');
self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/', 'color'=>'/(.+)/'), '[font=$1][color=$3]', '[/color][/font]');
self::node2BBCode($doc, 'font', array('face'=>'/([\w ]+)/'), '[font=$1]', '[/font]');
self::node2BBCode($doc, 'font', array('size'=>'/(\d+)/'), '[size=$1]', '[/size]');
self::node2BBCode($doc, 'font', array('color'=>'/(.+)/'), '[color=$1]', '[/color]');
*/
// Untested
//self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(.+?)[,;].*font-family:\s*(.+?)[,;].*color:\s*(.+?)[,;].*/'), '[size=$1][font=$2][color=$3]', '[/color][/font][/size]');
//self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(\d+)[,;].*/'), '[size=$1]', '[/size]');
//self::node2BBCode($doc, 'span', array('style'=>'/.*font-size:\s*(.+?)[,;].*/'), '[size=$1]', '[/size]');
self::tagToBBCode($doc, 'span', ['style' => '/.*color:\s*(.+?)[,;].*/'], '[color="$1"]', '[/color]');
//self::node2BBCode($doc, 'span', array('style'=>'/.*font-family:\s*(.+?)[,;].*/'), '[font=$1]', '[/font]');
//self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*font-size:\s*(\d+?)pt.*/'), '[font=$1][size=$2]', '[/size][/font]');
//self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*font-size:\s*(\d+?)px.*/'), '[font=$1][size=$2]', '[/size][/font]');
//self::node2BBCode($doc, 'div', array('style'=>'/.*font-family:\s*(.+?)[,;].*/'), '[font=$1]', '[/font]');
// Importing the classes - interesting for importing of posts from third party networks that were exported from friendica
// Test
//self::node2BBCode($doc, 'span', array('class'=>'/([\w ]+)/'), '[class=$1]', '[/class]');
self::tagToBBCode($doc, 'span', ['class' => 'type-link'], '[class=type-link]', '[/class]');
self::tagToBBCode($doc, 'span', ['class' => 'type-video'], '[class=type-video]', '[/class]');
self::tagToBBCode($doc, 'strong', [], '[b]', '[/b]');
self::tagToBBCode($doc, 'em', [], '[i]', '[/i]');
self::tagToBBCode($doc, 'b', [], '[b]', '[/b]');
self::tagToBBCode($doc, 'i', [], '[i]', '[/i]');
self::tagToBBCode($doc, 'u', [], '[u]', '[/u]');
self::tagToBBCode($doc, 's', [], '[s]', '[/s]');
self::tagToBBCode($doc, 'del', [], '[s]', '[/s]');
self::tagToBBCode($doc, 'strike', [], '[s]', '[/s]');
self::tagToBBCode($doc, 'big', [], "[size=large]", "[/size]");
self::tagToBBCode($doc, 'small', [], "[size=small]", "[/size]");
self::tagToBBCode($doc, 'blockquote', [], '[quote]', '[/quote]');
self::tagToBBCode($doc, 'br', [], "\n", '');
self::tagToBBCode($doc, 'p', ['class' => 'MsoNormal'], "\n", "");
self::tagToBBCode($doc, 'div', ['class' => 'MsoNormal'], "\r", "");
self::tagToBBCode($doc, 'span', [], "", "");
self::tagToBBCode($doc, 'span', [], "", "");
self::tagToBBCode($doc, 'pre', [], "", "");
self::tagToBBCode($doc, 'div', [], "\r", "\r");
self::tagToBBCode($doc, 'p', [], "\n", "\n");
self::tagToBBCode($doc, 'ul', [], "[list]", "[/list]");
self::tagToBBCode($doc, 'ol', [], "[list=1]", "[/list]");
self::tagToBBCode($doc, 'li', [], "[*]", "");
self::tagToBBCode($doc, 'hr', [], "[hr]", "");
self::tagToBBCode($doc, 'table', [], "[table]", "[/table]");
self::tagToBBCode($doc, 'th', [], "[th]", "[/th]");
self::tagToBBCode($doc, 'tr', [], "[tr]", "[/tr]");
self::tagToBBCode($doc, 'td', [], "[td]", "[/td]");
self::tagToBBCode($doc, 'h1', [], "[h1]", "[/h1]");
self::tagToBBCode($doc, 'h2', [], "[h2]", "[/h2]");
self::tagToBBCode($doc, 'h3', [], "[h3]", "[/h3]");
self::tagToBBCode($doc, 'h4', [], "[h4]", "[/h4]");
self::tagToBBCode($doc, 'h5', [], "[h5]", "[/h5]");
self::tagToBBCode($doc, 'h6', [], "[h6]", "[/h6]");
self::tagToBBCode($doc, 'a', ['href' => '/mailto:(.+)/'], '[mail=$1]', '[/mail]');
self::tagToBBCode($doc, 'a', ['href' => '/(.+)/'], '[url=$1]', '[/url]');
self::tagToBBCode($doc, 'img', ['src' => '/(.+)/', 'alt' => '/(.+)/'], '[img=$1]$2', '[/img]', true);
self::tagToBBCode($doc, 'img', ['src' => '/(.+)/', 'width' => '/(\d+)/', 'height' => '/(\d+)/'], '[img=$2x$3]$1', '[/img]', true);
self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], '[img]$1', '[/img]', true);
self::tagToBBCode($doc, 'video', ['src' => '/(.+)/'], '[video]$1', '[/video]', true);
self::tagToBBCode($doc, 'audio', ['src' => '/(.+)/'], '[audio]$1', '[/audio]', true);
// Backward compatibility, [iframe] support has been removed in version 2020.12
self::tagToBBCode($doc, 'iframe', ['src' => '/(.+)/'], '[url]$1', '[/url]', true);
self::tagToBBCode($doc, 'key', [], '[code]', '[/code]');
self::tagToBBCode($doc, 'code', [], '[code]', '[/code]');
$message = $doc->saveHTML();
// I'm removing something really disturbing
// Don't know exactly what it is
$message = str_replace(chr(194) . chr(160), ' ', $message);
$message = str_replace(" ", " ", $message);
// removing multiple DIVs
$message = preg_replace('=\r *\r=i', "\n", $message);
$message = str_replace("\r", "\n", $message);
Hook::callAll('html2bbcode', $message);
$message = strip_tags($message);
$message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
// remove quotes if they don't make sense
$message = preg_replace('=\[/quote\][\s]*\[quote\]=i', "\n", $message);
$message = preg_replace('=\[quote\]\s*=i', "[quote]", $message);
$message = preg_replace('=\s*\[/quote\]=i', "[/quote]", $message);
do {
$oldmessage = $message;
$message = str_replace("\n \n", "\n\n", $message);
} while ($oldmessage != $message);
do {
$oldmessage = $message;
$message = str_replace("\n\n\n", "\n\n", $message);
} while ($oldmessage != $message);
do {
$oldmessage = $message;
$message = str_replace(
[
"[/size]\n\n",
"\n[hr]",
"[hr]\n",
"\n[list",
"[/list]\n",
"\n[/",
"[list]\n",
"[list=1]\n",
"\n[*]"],
[
"[/size]\n",
"[hr]",
"[hr]",
"[list",
"[/list]",
"[/",
"[list]",
"[list=1]",
"[*]"],
$message
);
} while ($message != $oldmessage);
$message = str_replace(
['[b][b]', '[/b][/b]', '[i][i]', '[/i][/i]'],
['[b]', '[/b]', '[i]', '[/i]'],
$message
);
// Handling Yahoo style of mails
$message = str_replace('[hr][b]From:[/b]', '[quote][b]From:[/b]', $message);
return $message;
});
$message = preg_replace_callback(
'#(.*)
#iUs',
function ($matches) {
$prefix = '[code]';
if ($matches[1] != '') {
$prefix = '[code=' . $matches[1] . ']';
}
return $prefix . "\n" . html_entity_decode($matches[2]) . "\n" . '[/code]';
},
$message
);
$message = trim($message);
if ($basepath != '') {
$message = self::qualifyURLs($message, $basepath);
}
DI::profiler()->stopRecording();
return $message;
}
/**
* Sub function to complete incomplete URL
*
* @param array $matches Result of preg_replace_callback
* @param string $basepath Basepath that is used to complete the URL
*
* @return string The expanded URL
*/
private static function qualifyURLsSub(array $matches, string $basepath): string
{
$base = parse_url($basepath);
unset($base['query']);
unset($base['fragment']);
$link = $matches[0];
$url = $matches[1];
if (empty($url) || empty(parse_url($url))) {
return $matches[0];
}
$parts = array_merge($base, parse_url($url));
$url2 = Network::unparseURL($parts);
return str_replace($url, $url2, $link);
}
/**
* Complete incomplete URLs in BBCode
*
* @param string $body Body with URLs
* @param string $basepath Base path that is used to complete the URL
*
* @return string Body with expanded URLs
*/
private static function qualifyURLs(string $body, string $basepath): string
{
$URLSearchString = "^\[\]";
$matches = ["/\[url\=([$URLSearchString]*)\].*?\[\/url\]/ism",
"/\[url\]([$URLSearchString]*)\[\/url\]/ism",
"/\[img\=[0-9]*x[0-9]*\](.*?)\[\/img\]/ism",
"/\[img\](.*?)\[\/img\]/ism",
"/\[zmg\=[0-9]*x[0-9]*\](.*?)\[\/img\]/ism",
"/\[zmg\](.*?)\[\/zmg\]/ism",
"/\[video\](.*?)\[\/video\]/ism",
"/\[audio\](.*?)\[\/audio\]/ism",
];
foreach ($matches as $match) {
$body = preg_replace_callback(
$match,
function ($match) use ($basepath) {
return self::qualifyURLsSub($match, $basepath);
},
$body
);
}
return $body;
}
private static function breakLines(string $line, int $level, int $wraplength = 75): string
{
if ($wraplength == 0) {
$wraplength = 2000000;
}
$wraplen = $wraplength - $level;
$newlines = [];
do {
$oldline = $line;
$subline = substr($line, 0, $wraplen);
$pos = strrpos($subline, ' ');
if ($pos == 0) {
$pos = strpos($line, ' ');
}
if (($pos > 0) && strlen($line) > $wraplen) {
$newline = trim(substr($line, 0, $pos));
if ($level > 0) {
$newline = str_repeat(">", $level) . ' ' . $newline;
}
$newlines[] = $newline . " ";
$line = substr($line, $pos + 1);
}
} while ((strlen($line) > $wraplen) && !($oldline == $line));
if ($level > 0) {
$line = str_repeat(">", $level) . ' ' . $line;
}
$newlines[] = $line;
return implode("\n", $newlines);
}
private static function quoteLevel(string $message, int $wraplength = 75): string
{
$lines = explode("\n", $message);
$newlines = [];
$level = 0;
foreach ($lines as $line) {
$line = trim($line);
$startquote = false;
while (strpos("*" . $line, '[quote]') > 0) {
$level++;
$pos = strpos($line, '[quote]');
$line = substr($line, 0, $pos) . substr($line, $pos + 7);
$startquote = true;
}
$currlevel = $level;
while (strpos("*" . $line, '[/quote]') > 0) {
$level--;
if ($level < 0) {
$level = 0;
}
$pos = strpos($line, '[/quote]');
$line = substr($line, 0, $pos) . substr($line, $pos + 8);
}
if (!$startquote || ($line != '')) {
$newlines[] = self::breakLines($line, $currlevel, $wraplength);
}
}
return implode("\n", $newlines);
}
private static function collectURLs(string $message): array
{
$pattern = '/(.*?)<\/a>/is';
preg_match_all($pattern, $message, $result, PREG_SET_ORDER);
$urls = [];
foreach ($result as $treffer) {
$ignore = false;
// A list of some links that should be ignored
$list = ["/user/", "/tag/", "/group/", "/profile/", "/search?search=", "/search?tag=", "mailto:", "/u/", "/node/",
"//plus.google.com/", "//twitter.com/"];
foreach ($list as $listitem) {
if (strpos($treffer[1], $listitem) !== false) {
$ignore = true;
}
}
if ((strpos($treffer[1], "//twitter.com/") !== false) && (strpos($treffer[1], "/status/") !== false)) {
$ignore = false;
}
if ((strpos($treffer[1], "//plus.google.com/") !== false) && (strpos($treffer[1], "/posts") !== false)) {
$ignore = false;
}
if ((strpos($treffer[1], "//plus.google.com/") !== false) && (strpos($treffer[1], "/photos") !== false)) {
$ignore = false;
}
$ignore = $ignore || strpos($treffer[1], '#') === 0;
if (!$ignore) {
$urls[$treffer[1]] = $treffer[1];
}
}
return $urls;
}
/**
* @param string $html
* @param int $wraplength Ensures individual lines aren't longer than this many characters. Doesn't break words.
* @param bool $compact True: Completely strips image tags; False: Keeps image URLs
* @return string
*/
public static function toPlaintext(string $html, int $wraplength = 75, bool $compact = false): string
{
DI::profiler()->startRecording('rendering');
$message = str_replace("\r", "", $html);
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
$message = mb_convert_encoding($message, 'HTML-ENTITIES', "UTF-8");
if (empty($message)) {
DI::profiler()->stopRecording();
return '';
}
@$doc->loadHTML($message, LIBXML_HTML_NODEFDTD);
$message = $doc->saveHTML();
// Remove eventual UTF-8 BOM
$message = str_replace("\xC3\x82\xC2\xA0", "", $message);
// Collecting all links
$urls = self::collectURLs($message);
if (empty($message)) {
DI::profiler()->stopRecording();
return '';
}
@$doc->loadHTML($message, LIBXML_HTML_NODEFDTD);
self::tagToBBCode($doc, 'html', [], '', '');
self::tagToBBCode($doc, 'body', [], '', '');
if ($compact) {
self::tagToBBCode($doc, 'blockquote', [], "»", "«");
} else {
self::tagToBBCode($doc, 'blockquote', [], '[quote]', "[/quote]\n");
}
self::tagToBBCode($doc, 'br', [], "\n", '');
self::tagToBBCode($doc, 'span', [], "", "");
self::tagToBBCode($doc, 'pre', [], "", "");
self::tagToBBCode($doc, 'div', [], "\r", "\r");
self::tagToBBCode($doc, 'p', [], "\n", "\n");
self::tagToBBCode($doc, 'li', [], "\n* ", "\n");
self::tagToBBCode($doc, 'hr', [], "\n" . str_repeat("-", 70) . "\n", "");
self::tagToBBCode($doc, 'tr', [], "\n", "");
self::tagToBBCode($doc, 'td', [], "\t", "");
self::tagToBBCode($doc, 'h1', [], "\n\n*", "*\n");
self::tagToBBCode($doc, 'h2', [], "\n\n*", "*\n");
self::tagToBBCode($doc, 'h3', [], "\n\n*", "*\n");
self::tagToBBCode($doc, 'h4', [], "\n\n*", "*\n");
self::tagToBBCode($doc, 'h5', [], "\n\n*", "*\n");
self::tagToBBCode($doc, 'h6', [], "\n\n*", "*\n");
if (!$compact) {
self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], ' [img]$1', '[/img] ');
} else {
self::tagToBBCode($doc, 'img', ['src' => '/(.+)/'], ' ', ' ');
}
// Backward compatibility, [iframe] support has been removed in version 2020.12
self::tagToBBCode($doc, 'iframe', ['src' => '/(.+)/'], ' $1 ', '');
$message = $doc->saveHTML();
if (!$compact) {
$message = str_replace("[img]", "", $message);
$message = str_replace("[/img]", "", $message);
}
// was ersetze ich da?
// Irgendein stoerrisches UTF-Zeug
$message = str_replace(chr(194) . chr(160), ' ', $message);
$message = str_replace(" ", " ", $message);
// Aufeinanderfolgende DIVs
$message = preg_replace('=\r *\r=i', "\n", $message);
$message = str_replace("\r", "\n", $message);
$message = strip_tags($message);
$message = html_entity_decode($message, ENT_QUOTES, 'UTF-8');
if (!$compact && ($message != '')) {
foreach ($urls as $id => $url) {
if ($url != '' && strpos($message, $url) === false) {
$message .= "\n" . $url . ' ';
}
}
}
$message = str_replace("\n«", "«\n", $message);
$message = str_replace("»\n", "\n»", $message);
do {
$oldmessage = $message;
$message = str_replace("\n\n\n", "\n\n", $message);
} while ($oldmessage != $message);
$message = self::quoteLevel(trim($message), $wraplength);
DI::profiler()->stopRecording();
return trim($message);
}
/**
* Converts provided HTML code to Markdown. The hardwrap parameter maximizes
* compatibility with Diaspora in spite of the Markdown standards.
*
* @param string $html
* @return string
*/
public static function toMarkdown(string $html): string
{
DI::profiler()->startRecording('rendering');
$converter = new HtmlConverter(['hard_break' => true]);
$markdown = $converter->convert($html);
DI::profiler()->stopRecording();
return $markdown;
}
/**
* Convert video HTML to BBCode tags
*
* @param string $s
* @return string
*/
public static function toBBCodeVideo(string $s): string
{
$s = preg_replace(
'#]+>(.*?)https?://www.youtube.com/((?:v|cp)/[A-Za-z0-9\-_=]+)(.*?)#ism',
'[youtube]$2[/youtube]',
$s
);
$s = preg_replace(
'#](.*?)https?://www.youtube.com/embed/([A-Za-z0-9\-_=]+)(.*?)#ism',
'[youtube]$2[/youtube]',
$s
);
$s = preg_replace(
'#](.*?)https?://player.vimeo.com/video/([0-9]+)(.*?)#ism',
'[vimeo]$2[/vimeo]',
$s
);
return $s;
}
/**
* transform link href and img src from relative to absolute
*
* @param string $text
* @param string $base base url
* @return string
*/
public static function relToAbs(string $text, string $base): string
{
if (empty($base)) {
return $text;
}
$base = rtrim($base, '/');
$base2 = $base . "/";
// Replace links
$pattern = "/]*) href=\"(?!http|https|\/)([^\"]*)\"/";
$replace = " DI::l10n()->t('Loading more entries...'),
'end' => DI::l10n()->t('The end')
]);
}
/**
* Format contacts as picture links or as text links
*
* @param array $contact Array with contacts which contains an array with
* int 'id' => The ID of the contact
* int 'uid' => The user ID of the user who owns this data
* string 'name' => The name of the contact
* string 'url' => The url to the profile page of the contact
* string 'addr' => The webbie of the contact (e.g.) username@friendica.com
* string 'network' => The network to which the contact belongs to
* string 'thumb' => The contact picture
* string 'click' => js code which is performed when clicking on the contact
* @param boolean $redirect If true try to use the redir url if it's possible
* @param string $class CSS class for the
* @param boolean $textmode If true display the contacts as text links
* if false display the contacts as picture links
* @return string Formatted html
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function micropro(array $contact, bool $redirect = false, string $class = '', bool $textmode = false): string
{
// Use the contact URL if no address is available
if (empty($contact['addr'])) {
$contact["addr"] = $contact["url"];
}
$url = $contact['url'];
$sparkle = '';
$redir = false;
if ($redirect) {
$url = Contact::magicLinkByContact($contact);
if (strpos($url, 'contact/redir/') === 0) {
$sparkle = ' sparkle';
}
}
// If there is some js available we don't need the url
if (!empty($contact['click'])) {
$url = '';
}
return Renderer::replaceMacros(Renderer::getMarkupTemplate($textmode ? 'micropro_txt.tpl' : 'micropro_img.tpl'), [
'$click' => $contact['click'] ?? '',
'$class' => $class,
'$url' => $url,
'$photo' => Contact::getThumb($contact),
'$name' => $contact['name'],
'title' => $contact['name'] . ' [' . $contact['addr'] . ']',
'$parkle' => $sparkle,
'$redir' => $redir
]);
}
/**
* Search box.
*
* @param string $s Search query.
* @param string $id HTML id
* @param bool $aside Display the search widgit aside.
*
* @return string Formatted HTML.
* @throws \Exception
*/
public static function search(string $s, string $id = 'search-box', bool $aside = true): string
{
$mode = 'text';
if (strpos($s, '#') === 0) {
$mode = 'tag';
}
$save_label = $mode === 'text' ? DI::l10n()->t('Save') : DI::l10n()->t('Follow');
$values = [
'$s' => $s,
'$q' => urlencode($s),
'$id' => $id,
'$search_label' => DI::l10n()->t('Search'),
'$save_label' => $save_label,
'$search_hint' => DI::l10n()->t('@name, !forum, #tags, content'),
'$mode' => $mode,
'$return_url' => urlencode(Search::getSearchPath($s)),
];
if (!$aside) {
$values['$search_options'] = [
'fulltext' => DI::l10n()->t('Full Text'),
'tags' => DI::l10n()->t('Tags'),
'contacts' => DI::l10n()->t('Contacts')
];
if (DI::config()->get('system', 'poco_local_search')) {
$values['$searchoption']['forums'] = DI::l10n()->t('Forums');
}
}
return Renderer::replaceMacros(Renderer::getMarkupTemplate('searchbox.tpl'), $values);
}
/**
* Given a HTML text and a set of filtering reasons, adds a content hiding header with the provided reasons
*
* Reasons are expected to have been translated already.
*
* @param string $html
* @param array $reasons
* @return string
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function applyContentFilter(string $html, array $reasons): string
{
if (count($reasons)) {
$tpl = Renderer::getMarkupTemplate('wall/content_filter.tpl');
$html = Renderer::replaceMacros($tpl, [
'$reasons' => $reasons,
'$rnd' => Strings::getRandomHex(8),
'$openclose' => DI::l10n()->t('Click to open/close'),
'$html' => $html
]);
}
return $html;
}
/**
* replace html amp entity with amp char
* @param string $s
* @return string
*/
public static function unamp(string $s): string
{
return str_replace('&', '&', $s);
}
/**
* Clean an HTML text for potentially harmful code
*
* @param string $text
* @param array $allowedIframeDomains List of allowed iframe source domains without the scheme
* @return string
*/
public static function purify(string $text, array $allowedIframeDomains = []): string
{
// Allows cid: URL scheme
\HTMLPurifier_URISchemeRegistry::instance()->register('cid', new HTMLPurifier_URIScheme_cid());
$config = \HTMLPurifier_HTML5Config::createDefault();
$config->set('HTML.Doctype', 'HTML5');
// Used to remove iframe with src attribute filtered out
$config->set('AutoFormat.RemoveEmpty', true);
$config->set('HTML.SafeIframe', true);
array_walk($allowedIframeDomains, function (&$domain) {
// Allow the domain and all its eventual sub-domains
$domain = '(?:(?!-)[A-Za-z0-9-]{1,63}(?set('URI.SafeIframeRegexp',
'%^https://(?:
' . implode('|', $allowedIframeDomains) . '
)
(?:/|$) # Prevents bogus domains like youtube.com.fake.tld
%xi'
);
$config->set('Attr.AllowedRel', [
'noreferrer' => true,
'noopener' => true,
'tag' => true,
]);
$config->set('Attr.AllowedFrameTargets', [
'_blank' => true,
]);
$config->set('AutoFormat.RemoveEmpty.Predicate', [
'colgroup' => [], // |
'th' => [], // |
'td' => [], // |
'iframe' => ['src'], // ↳ Default HTMLPurify values
'i' => ['class'], // Allows forkawesome icons
]);
// Uncomment to debug HTMLPurifier behavior
//$config->set('Core.CollectErrors', true);
//$config->set('Core.MaintainLineNumbers', true);
$HTMLPurifier = new \HTMLPurifier($config);
$text = $HTMLPurifier->purify($text);
/** @var \HTMLPurifier_ErrorCollector $errorCollector */
// Uncomment to debug HTML Purifier behavior
//$errorCollector = $HTMLPurifier->context->get('ErrorCollector');
//var_dump($errorCollector->getRaw());
return $text;
}
/**
* XPath arbitrary string quoting
*
* @see https://stackoverflow.com/a/45228168
* @param string $value
* @return string
*/
public static function xpathQuote(string $value): string
{
if (false === strpos($value, '"')) {
return '"' . $value . '"';
}
if (false === strpos($value, "'")) {
return "'" . $value . "'";
}
// if the value contains both single and double quotes, construct an
// expression that concatenates all non-double-quote substrings with
// the quotes, e.g.:
//
// concat("'foo'", '"', "bar")
return 'concat(' . implode(', \'"\', ', array_map(['self', 'xpathQuote'], explode('"', $value))) . ')';
}
/**
* Checks if the provided URL is present in the DOM document in an element with the rel="me" attribute
*
* XHTML Friends Network http://gmpg.org/xfn/
*
* @param DOMDocument $doc
* @param UriInterface $meUrl
* @return bool
*/
public static function checkRelMeLink(DOMDocument $doc, UriInterface $meUrl): bool
{
$xpath = new \DOMXpath($doc);
// This expression checks that "me" is among the space-delimited values of the "rel" attribute.
// And that the href attribute contains exactly the provided URL
$expression = "//*[contains(concat(' ', normalize-space(@rel), ' '), ' me ')][@href = " . self::xpathQuote($meUrl) . "]";
$result = $xpath->query($expression);
return $result !== false && $result->length > 0;
}
}