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phorge/src/infrastructure/markup/blockrule/PhutilRemarkupTableBlockRule.php
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PhutilRemarkupTableBlockRule.php
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<?php
final class PhutilRemarkupTableBlockRule extends PhutilRemarkupBlockRule {
public function getMatchingLineCount(array $lines, $cursor) {
$num_lines = 0;
if (preg_match('/^\s*<table>/i', $lines[$cursor])) {
$num_lines++;
$cursor++;
while (isset($lines[$cursor])) {
$num_lines++;
if (preg_match('@</table>\s*$@i', $lines[$cursor])) {
break;
}
$cursor++;
}
}
return $num_lines;
}
public function markupText($text, $children) {
$root = id(new PhutilHTMLParser())
->parseDocument($text);
$nodes = $root->selectChildrenWithTags(array('table'));
$out = array();
$seen_table = false;
foreach ($nodes as $node) {
if ($node->isContentNode()) {
$content = $node->getContent();
if (!strlen(trim($content))) {
// Ignore whitespace.
continue;
}
// If we find other content, fail the rule. This can happen if the
// input is two consecutive table tags on one line with some text
// in between them, which we currently forbid.
return $text;
} else {
// If we have multiple table tags, just return the raw text.
if ($seen_table) {
return $text;
}
$seen_table = true;
$out[] = $this->newTable($node);
}
}
if ($this->getEngine()->isTextMode()) {
return implode('', $out);
} else {
return phutil_implode_html('', $out);
}
}
private function newTable(PhutilDOMNode $table) {
$nodes = $table->selectChildrenWithTags(
array(
'colgroup',
'tr',
));
$colgroup = null;
$rows = array();
foreach ($nodes as $node) {
if ($node->isContentNode()) {
$content = $node->getContent();
// If this is whitespace, ignore it.
if (!strlen(trim($content))) {
continue;
}
// If we have nonempty content between the rows, this isn't a valid
// table. We can't really do anything reasonable with this, so just
// fail out and render the raw text.
return $table->newRawString();
}
if ($node->getTagName() === 'colgroup') {
// This table has multiple "<colgroup />" tags. Just bail out.
if ($colgroup !== null) {
return $table->newRawString();
}
// This table has a "<colgroup />" after a "<tr />". We could parse
// this, but just reject it out of an abundance of caution.
if ($rows) {
return $table->newRawString();
}
$colgroup = $node;
continue;
}
$rows[] = $node;
}
$row_specs = array();
foreach ($rows as $row) {
$cells = $row->selectChildrenWithTags(array('td', 'th'));
$cell_specs = array();
foreach ($cells as $cell) {
if ($cell->isContentNode()) {
$content = $node->getContent();
if ($content === null || trim($content) === '') {
continue;
}
return $table->newRawString();
}
// Respect newlines in table cells as literal linebreaks.
$content = $cell->newRawContentString();
$content = trim($content, "\r\n");
$lines = phutil_split_lines($content, $retain_endings = false);
foreach ($lines as $key => $line) {
$lines[$key] = $this->applyRules($line);
}
$content = phutil_implode_html(
phutil_tag('br'),
$lines);
$cell_specs[] = array(
'type' => $cell->getTagName(),
'content' => $content,
);
}
$row_specs[] = array(
'type' => 'tr',
'content' => $cell_specs,
);
}
return $this->renderRemarkupTable($row_specs);
}
}

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