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phorge/src/infrastructure/markup/blockrule/PhutilRemarkupLiteralBlockRule.php
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PhutilRemarkupLiteralBlockRule.php
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<?php
final class PhutilRemarkupLiteralBlockRule extends PhutilRemarkupBlockRule {
public function getPriority() {
return 450;
}
public function getMatchingLineCount(array $lines, $cursor) {
// NOTE: We're consuming all contiguous blocks of %%% literals, so this:
//
// %%%a%%%
// %%%b%%%
//
// ...is equivalent to:
//
// %%%a
// b%%%
//
// If they are separated by a blank newline, they are parsed as two
// different blocks. This more clearly represents the original text in the
// output text and assists automated escaping of blocks coming into the
// system.
$start_pattern = '(^\s*%%%)';
$end_pattern = '(%%%\s*$)';
$trivial_pattern = '(^\s*%%%\s*$)';
if (!preg_match($start_pattern, $lines[$cursor])) {
return 0;
}
$start_cursor = $cursor;
$found_empty = false;
$block_start = null;
while (true) {
if (!isset($lines[$cursor])) {
break;
}
$line = $lines[$cursor];
if ($block_start === null) {
$is_start = preg_match($start_pattern, $line);
// If we've matched a block and then consumed one or more empty lines
// after it, stop merging more blocks into the match.
if ($found_empty) {
break;
}
if ($is_start) {
$block_start = $cursor;
}
}
if ($block_start !== null) {
$is_end = preg_match($end_pattern, $line);
// If a line contains only "%%%", it will match both the start and
// end patterns, but it only counts as a block start.
if ($is_end && ($cursor === $block_start)) {
$is_trivial = preg_match($trivial_pattern, $line);
if ($is_trivial) {
$is_end = false;
}
}
if ($is_end) {
$block_start = null;
$cursor++;
continue;
}
}
if ($block_start === null) {
if (strlen(trim($line))) {
break;
}
$found_empty = true;
}
$cursor++;
}
return ($cursor - $start_cursor);
}
public function markupText($text, $children) {
$text = rtrim($text);
$text = phutil_split_lines($text, $retain_endings = true);
foreach ($text as $key => $line) {
$line = preg_replace('/^\s*%%%/', '', $line);
$line = preg_replace('/%%%(\s*)\z/', '\1', $line);
$text[$key] = $line;
}
if ($this->getEngine()->isTextMode()) {
return implode('', $text);
}
return phutil_tag(
'p',
array(
'class' => 'remarkup-literal',
),
phutil_implode_html(phutil_tag('br', array()), $text));
}
}

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