/**
* Parse the given content.
*
* Any newly created nodes should be appended to the given target. Any remaining content should be passed to the
* next parser in the chain.
*
* @param Text $content
* @param InlineNodeAcceptorInterface $target
* @return void
*/
public function parseInline(Text $content, InlineNodeAcceptorInterface $target)
{
$content->handle('{
(?<!\\\\)
(
\\<[A-Z][A-Z0-9]* # an opening HTML tag with
(?: # multiple attributes...
\\s+
[A-Z_:][A-Z0-9_:.\\-]*
(?:
\\s*=\\s*
(?:
[^ "\'=<>`]+| # unquoted attribute values
\'[^\']*\'| # single-quoted attribute values
"[^"]*" # double-quoted attribute values
)
)?
)*
\\s*/?\\>| # ...or
\\</[A-Z][A-Z0-9]*\\s*\\>| # a closing HTML tag, or
\\<!--(-(?!-)|[^\\-])*?--\\>| # a HTML comment, or
\\<\\?.*?\\?\\>| # a processing instruction, or
\\<![A-Z]+\\s+[^>]+\\>| # an element type declaration, or
\\<!\\[CDATA\\[.*?\\]\\]\\> # a CDATA section
)
}isx', function (Text $content) use($target) {
$target->addInline(new RawHTML($content));
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}
protected function parseEmail(Text $content, InlineNodeAcceptorInterface $target)
{
if ($content->contains('@')) {
$content->handle('{
<
(?:mailto:)?
(
[a-zA-Z0-9.!#$%&\'*+/=?^_`{|}~-]+
\\@
[a-zA-Z0-9]
(?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?
(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*
)
>
}ix', function (Text $w, Text $email) use($target) {
$text = $email->copy();
$link = new Link($email->prepend('mailto:'));
$link->addInline(new String($text));
$target->addInline($link);
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
} else {
$this->next->parseInline($content, $target);
}
}
/**
* Parse the given content.
*
* Any newly created nodes should be appended to the given target. Any remaining content should be passed to the
* next parser in the chain.
*
* @param Text $content
* @param InlineNodeAcceptorInterface $target
* @return void
*/
public function parseInline(Text $content, InlineNodeAcceptorInterface $target)
{
$this->handleBackslashes($content);
$content->decodeEntities();
// Remove spaces at the end of each line
$content->replace('/[ ]+(?=\\n)/', '');
$target->addInline(new String($content));
}
/**
* Parse the given content.
*
* Any newly created nodes should be appended to the given target. Any remaining content should be passed to the
* next parser in the chain.
*
* @param Text $content
* @param InlineNodeAcceptorInterface $target
* @return void
*/
public function parseInline(Text $content, InlineNodeAcceptorInterface $target)
{
$content->handle('/(\\\\\\n)|( {2,}\\n)/', function () use($target) {
$target->addInline(new HardBreak());
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}
protected function parseUnderscores(Text $content, InlineNodeAcceptorInterface $target)
{
$content->handle('{ (?<![A-Za-z0-9]) (__) (?![\\s_]) (.+) (?<![\\s_]) \\1 (?![A-Za-z0-9]) }sx', function (Text $w, Text $a, Text $inner) use($target) {
$emphasis = new StrongEmphasis($inner);
$this->context->queue($emphasis->getContent(), $emphasis);
$target->addInline($emphasis);
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}
protected function parseCodeSpan(Text $content, InlineNodeAcceptorInterface $target)
{
$content->handle('{
(?<![`\\\\])
(`+) # $1 = Opening run of `
(?!`)
(.+?) # $2 = The code block
(?<!`)
\\1 # Matching closer
(?!`)
}sx', function (Text $whole, Text $b, Text $code) use($target) {
// Replace multiple whitespace characters in a row with a single space
$code->trim()->replaceString("\n", ' ')->replace('/[\\s]{2,}/', ' ');
$target->addInline(new Code($code->escapeHtml()));
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}
protected function parseReferenceLink(Text $content, InlineNodeAcceptorInterface $target)
{
$references = implode('|', array_map(function ($reference) {
return str_replace(' ', '[ ]', preg_quote($reference));
}, $this->context->getReferences()));
$content->handle('/
(?<!\\\\)
(?|
()
\\[
(' . $references . ')
\\]
[\\n\\ ]*
\\[\\]
|
(?:
\\[
(' . $this->getNestedBrackets() . ') # link text = $1
\\]
[ \\t\\n]*
)?
\\[
(' . $references . ') # label = $2
\\]
)
/iux', function (Text $whole, Text $linkText, Text $label) use($target) {
$reference = $label->copy()->lower();
$url = $this->context->getReferenceUrl($reference);
$title = $this->context->getReferenceTitle($reference);
if ($linkText->isEmpty()) {
$linkText = $label;
}
$link = new Link($url, $linkText, $title);
$target->addInline($link);
$this->context->queue($link->getContent(), $link);
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}
protected function parseReferenceImage(Text $content, InlineNodeAcceptorInterface $target)
{
$references = implode('|', array_map(function ($reference) {
return str_replace(' ', '[ ]', preg_quote($reference));
}, $this->context->getReferences()));
$content->handle('{
(?<!\\\\)!
(?|
()
\\[
(' . $references . ')
\\]
[\\n\\ ]*
\\[\\]
|
(?:
\\[
(.*?) # alt text = $1
\\]
[ \\t\\n]*
)?
\\[
(' . $references . ')
\\]
)
}iux', function (Text $whole, Text $alt, Text $label) use($target) {
$reference = $label->copy()->lower();
$url = $this->context->getReferenceUrl($reference);
$title = $this->context->getReferenceTitle($reference);
if ($alt->isEmpty()) {
$alt = $label;
}
$image = new Image($url, $alt, $title);
$target->addInline($image);
}, function (Text $part) use($target) {
$this->next->parseInline($part, $target);
});
}