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PhutilRemarkupBlockRule.php
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Sun, Dec 22, 04:12

PhutilRemarkupBlockRule.php
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<?php
abstract class PhutilRemarkupBlockRule extends Phobject {
private $engine;
private $rules = array();
/**
* Determine the order in which blocks execute. Blocks with smaller priority
* numbers execute sooner than blocks with larger priority numbers. The
* default priority for blocks is `500`.
*
* Priorities are used to disambiguate syntax which can match multiple
* patterns. For example, ` - Lorem ipsum...` may be a code block or a
* list.
*
* @return int Priority at which this block should execute.
*/
public function getPriority() {
return 500;
}
final public function getPriorityVector() {
return id(new PhutilSortVector())
->addInt($this->getPriority())
->addString(get_class($this));
}
abstract public function markupText($text, $children);
/**
* This will get an array of unparsed lines and return the number of lines
* from the first array value that it can parse.
*
* @param array $lines
* @param int $cursor
*
* @return int
*/
abstract public function getMatchingLineCount(array $lines, $cursor);
protected function didMarkupText() {
return;
}
final public function setEngine(PhutilRemarkupEngine $engine) {
$this->engine = $engine;
$this->updateRules();
return $this;
}
final protected function getEngine() {
return $this->engine;
}
public function setMarkupRules(array $rules) {
assert_instances_of($rules, 'PhutilRemarkupRule');
$this->rules = $rules;
$this->updateRules();
return $this;
}
private function updateRules() {
$engine = $this->getEngine();
if ($engine) {
$this->rules = msort($this->rules, 'getPriority');
foreach ($this->rules as $rule) {
$rule->setEngine($engine);
}
}
return $this;
}
final public function getMarkupRules() {
return $this->rules;
}
final public function postprocess() {
$this->didMarkupText();
}
final protected function applyRules($text) {
foreach ($this->getMarkupRules() as $rule) {
$text = $rule->apply($text);
}
return $text;
}
public function supportsChildBlocks() {
return false;
}
public function extractChildText($text) {
throw new PhutilMethodNotImplementedException();
}
protected function renderRemarkupTable(array $out_rows) {
assert_instances_of($out_rows, 'array');
if ($this->getEngine()->isTextMode()) {
$lengths = array();
foreach ($out_rows as $r => $row) {
foreach ($row['content'] as $c => $cell) {
$text = $this->getEngine()->restoreText($cell['content']);
$lengths[$c][$r] = phutil_utf8_strlen($text);
}
}
$max_lengths = array_map('max', $lengths);
$out = array();
foreach ($out_rows as $r => $row) {
$headings = false;
foreach ($row['content'] as $c => $cell) {
$length = $max_lengths[$c] - $lengths[$c][$r];
$out[] = '| '.$cell['content'].str_repeat(' ', $length).' ';
if ($cell['type'] == 'th') {
$headings = true;
}
}
$out[] = "|\n";
if ($headings) {
foreach ($row['content'] as $c => $cell) {
$char = ($cell['type'] == 'th' ? '-' : ' ');
$out[] = '| '.str_repeat($char, $max_lengths[$c]).' ';
}
$out[] = "|\n";
}
}
return rtrim(implode('', $out), "\n");
}
if ($this->getEngine()->isHTMLMailMode()) {
$table_attributes = array(
'style' => 'border-collapse: separate;
border-spacing: 1px;
background: #d3d3d3;
margin: 12px 0;',
);
$cell_attributes = array(
'style' => 'background: #ffffff;
padding: 3px 6px;',
);
} else {
$table_attributes = array(
'class' => 'remarkup-table',
);
$cell_attributes = array();
}
$out = array();
$out[] = "\n";
foreach ($out_rows as $row) {
$cells = array();
foreach ($row['content'] as $cell) {
$cells[] = phutil_tag(
$cell['type'],
$cell_attributes,
$cell['content']);
}
$out[] = phutil_tag($row['type'], array(), $cells);
$out[] = "\n";
}
$table = phutil_tag('table', $table_attributes, $out);
return phutil_tag_div('remarkup-table-wrap', $table);
}
}

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