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PhutilRemarkupSimpleTableBlockRule.php
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Sat, Apr 27, 11:28

PhutilRemarkupSimpleTableBlockRule.php
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<?php
final class PhutilRemarkupSimpleTableBlockRule extends PhutilRemarkupBlockRule {
public function getMatchingLineCount(array $lines, $cursor) {
$num_lines = 0;
while (isset($lines[$cursor])) {
if (preg_match('/^(\s*\|.*+\n?)+$/', $lines[$cursor])) {
$num_lines++;
$cursor++;
} else {
break;
}
}
return $num_lines;
}
public function markupText($text, $children) {
$matches = array();
$rows = array();
foreach (explode("\n", $text) as $line) {
// Ignore ending delimiters.
$line = rtrim($line, '|');
// NOTE: The complexity in this regular expression allows us to match
// a table like "| a | [[ href | b ]] | c |".
preg_match_all(
'/\|'.
'('.
'(?:'.
'(?:\\[\\[.*?\\]\\])'. // [[ ... | ... ]], a link
'|'.
'(?:[^|[]+)'. // Anything but "|" or "[".
'|'.
'(?:\\[[^\\|[])'. // "[" followed by anything but "[" or "|"
')*'.
')/', $line, $matches);
$any_header = false;
$any_content = false;
$cells = array();
foreach ($matches[1] as $cell) {
$cell = trim($cell);
// If this row only has empty cells and "--" cells, and it has at
// least one "--" cell, it's marking the rows above as <th> cells
// instead of <td> cells.
// If it has other types of cells, it's always a content row.
// If it has only empty cells, it's an empty row.
if (strlen($cell)) {
if (preg_match('/^--+\z/', $cell)) {
$any_header = true;
} else {
$any_content = true;
}
}
$cells[] = array('type' => 'td', 'content' => $this->applyRules($cell));
}
$is_header = ($any_header && !$any_content);
if (!$is_header) {
$rows[] = array('type' => 'tr', 'content' => $cells);
} else if ($rows) {
// Mark previous row with headings.
foreach ($cells as $i => $cell) {
if ($cell['content']) {
$last_key = last_key($rows);
if (!isset($rows[$last_key]['content'][$i])) {
// If this row has more cells than the previous row, there may
// not be a cell above this one to turn into a <th />.
continue;
}
$rows[$last_key]['content'][$i]['type'] = 'th';
}
}
}
}
if (!$rows) {
return $this->applyRules($text);
}
return $this->renderRemarkupTable($rows);
}
}

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