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DiffusionRemarkupRule.php
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Created
Wed, May 7, 03:19

DiffusionRemarkupRule.php
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<?php
final class DiffusionRemarkupRule
extends PhabricatorRemarkupRuleObject {
protected function getObjectNamePrefix() {
return '';
}
protected function getObjectNamePrefixBeginsWithWordCharacter() {
return true;
}
protected function getObjectIDPattern() {
$min_unqualified = PhabricatorRepository::MINIMUM_UNQUALIFIED_HASH;
$min_qualified = PhabricatorRepository::MINIMUM_QUALIFIED_HASH;
// NOTE: The "(?<!/)" negative lookbehind prevents this rule from matching
// hashes or hash-like substrings in most URLs. For example, this will not
// match: http://www.example.com/article/28903218328/
return
'r[A-Z]+[1-9]\d*'.
'|'.
'r[A-Z]+[a-f0-9]{'.$min_qualified.',40}'.
'|'.
'(?<!/)[a-f0-9]{'.$min_unqualified.',40}';
}
protected function loadObjects(array $ids) {
$viewer = $this->getEngine()->getConfig('viewer');
$min_qualified = PhabricatorRepository::MINIMUM_QUALIFIED_HASH;
$commits = id(new DiffusionCommitQuery())
->setViewer($viewer)
->withIdentifiers($ids)
->execute();
if (!$commits) {
return array();
}
$ids = array_fuse($ids);
$result = array();
foreach ($commits as $commit) {
$prefix = 'r'.$commit->getRepository()->getCallsign();
$suffix = $commit->getCommitIdentifier();
if ($commit->getRepository()->isSVN()) {
if (isset($ids[$prefix.$suffix])) {
$result[$prefix.$suffix][] = $commit;
}
} else {
// This awkward contruction is so we can link the commits up in O(N)
// time instead of O(N^2).
for ($ii = $min_qualified; $ii <= strlen($suffix); $ii++) {
$part = substr($suffix, 0, $ii);
if (isset($ids[$prefix.$part])) {
$result[$prefix.$part][] = $commit;
}
if (isset($ids[$part])) {
$result[$part][] = $commit;
}
}
}
}
foreach ($result as $identifier => $commits) {
if (count($commits) == 1) {
$result[$identifier] = head($commits);
} else {
// This reference is ambiguous -- it matches more than one commit -- so
// don't link it. We could potentially improve this, but it's a bit
// tricky since the superclass expects a single object.
unset($result[$identifier]);
}
}
return $result;
}
}

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