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PhabricatorObjectRemarkupRule.php
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Thu, Sep 5, 11:17

PhabricatorObjectRemarkupRule.php
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<?php
abstract class PhabricatorObjectRemarkupRule extends PhutilRemarkupRule {
const KEY_RULE_OBJECT = 'rule.object';
const KEY_MENTIONED_OBJECTS = 'rule.object.mentioned';
abstract protected function getObjectNamePrefix();
abstract protected function loadObjects(array $ids);
public function getPriority() {
return 450.0;
}
protected function getObjectNamePrefixBeginsWithWordCharacter() {
$prefix = $this->getObjectNamePrefix();
return preg_match('/^\w/', $prefix);
}
protected function getObjectIDPattern() {
return '[1-9]\d*';
}
protected function shouldMarkupObject(array $params) {
return true;
}
protected function getObjectNameText(
$object,
PhabricatorObjectHandle $handle,
$id) {
return $this->getObjectNamePrefix().$id;
}
protected function loadHandles(array $objects) {
$phids = mpull($objects, 'getPHID');
$viewer = $this->getEngine()->getConfig('viewer');
$handles = $viewer->loadHandles($phids);
$handles = iterator_to_array($handles);
$result = array();
foreach ($objects as $id => $object) {
$result[$id] = $handles[$object->getPHID()];
}
return $result;
}
protected function getObjectHref(
$object,
PhabricatorObjectHandle $handle,
$id) {
$uri = $handle->getURI();
if ($this->getEngine()->getConfig('uri.full')) {
$uri = PhabricatorEnv::getURI($uri);
}
return $uri;
}
protected function renderObjectRefForAnyMedia(
$object,
PhabricatorObjectHandle $handle,
$anchor,
$id) {
$href = $this->getObjectHref($object, $handle, $id);
$text = $this->getObjectNameText($object, $handle, $id);
if ($anchor) {
$href = $href.'#'.$anchor;
$text = $text.'#'.$anchor;
}
if ($this->getEngine()->isTextMode()) {
return PhabricatorEnv::getProductionURI($href);
} else if ($this->getEngine()->isHTMLMailMode()) {
$href = PhabricatorEnv::getProductionURI($href);
return $this->renderObjectTagForMail($text, $href, $handle);
}
return $this->renderObjectRef($object, $handle, $anchor, $id);
}
protected function renderObjectRef(
$object,
PhabricatorObjectHandle $handle,
$anchor,
$id) {
$href = $this->getObjectHref($object, $handle, $id);
$text = $this->getObjectNameText($object, $handle, $id);
$status_closed = PhabricatorObjectHandle::STATUS_CLOSED;
if ($anchor) {
$href = $href.'#'.$anchor;
$text = $text.'#'.$anchor;
}
$attr = array(
'phid' => $handle->getPHID(),
'closed' => ($handle->getStatus() == $status_closed),
);
return $this->renderHovertag($text, $href, $attr);
}
protected function renderObjectEmbedForAnyMedia(
$object,
PhabricatorObjectHandle $handle,
$options) {
$name = $handle->getFullName();
$href = $handle->getURI();
if ($this->getEngine()->isTextMode()) {
return $name.' <'.PhabricatorEnv::getProductionURI($href).'>';
} else if ($this->getEngine()->isHTMLMailMode()) {
$href = PhabricatorEnv::getProductionURI($href);
return $this->renderObjectTagForMail($name, $href, $handle);
}
return $this->renderObjectEmbed($object, $handle, $options);
}
protected function renderObjectEmbed(
$object,
PhabricatorObjectHandle $handle,
$options) {
$name = $handle->getFullName();
$href = $handle->getURI();
$status_closed = PhabricatorObjectHandle::STATUS_CLOSED;
$attr = array(
'phid' => $handle->getPHID(),
'closed' => ($handle->getStatus() == $status_closed),
);
return $this->renderHovertag($name, $href, $attr);
}
protected function renderObjectTagForMail(
$text,
$href,
PhabricatorObjectHandle $handle) {
$status_closed = PhabricatorObjectHandle::STATUS_CLOSED;
$strikethrough = $handle->getStatus() == $status_closed ?
'text-decoration: line-through;' :
'text-decoration: none;';
return phutil_tag(
'a',
array(
'href' => $href,
'style' => 'background-color: #e7e7e7;
border-color: #e7e7e7;
border-radius: 3px;
padding: 0 4px;
font-weight: bold;
color: black;'
.$strikethrough,
),
$text);
}
protected function renderHovertag($name, $href, array $attr = array()) {
return id(new PHUITagView())
->setName($name)
->setHref($href)
->setType(PHUITagView::TYPE_OBJECT)
->setPHID(idx($attr, 'phid'))
->setClosed(idx($attr, 'closed'))
->render();
}
public function apply($text) {
$text = preg_replace_callback(
$this->getObjectEmbedPattern(),
array($this, 'markupObjectEmbed'),
$text);
$text = preg_replace_callback(
$this->getObjectReferencePattern(),
array($this, 'markupObjectReference'),
$text);
return $text;
}
private function getObjectEmbedPattern() {
$prefix = $this->getObjectNamePrefix();
$prefix = preg_quote($prefix);
$id = $this->getObjectIDPattern();
return '(\B{'.$prefix.'('.$id.')([,\s](?:[^}\\\\]|\\\\.)*)?}\B)u';
}
private function getObjectReferencePattern() {
$prefix = $this->getObjectNamePrefix();
$prefix = preg_quote($prefix);
$id = $this->getObjectIDPattern();
// If the prefix starts with a word character (like "D"), we want to
// require a word boundary so that we don't match "XD1" as "D1". If the
// prefix does not start with a word character, we want to require no word
// boundary for the same reasons. Test if the prefix starts with a word
// character.
if ($this->getObjectNamePrefixBeginsWithWordCharacter()) {
$boundary = '\\b';
} else {
$boundary = '\\B';
}
// The "(?<![#@-])" prevents us from linking "#abcdef" or similar, and
// "ABC-T1" (see T5714), and from matching "@T1" as a task (it is a user)
// (see T9479).
// The "\b" allows us to link "(abcdef)" or similar without linking things
// in the middle of words.
return '((?<![#@-])'.$boundary.$prefix.'('.$id.')(?:#([-\w\d]+))?(?!\w))u';
}
/**
* Extract matched object references from a block of text.
*
* This is intended to make it easy to write unit tests for object remarkup
* rules. Production code is not normally expected to call this method.
*
* @param string Text to match rules against.
* @return wild Matches, suitable for writing unit tests against.
*/
public function extractReferences($text) {
$embed_matches = null;
preg_match_all(
$this->getObjectEmbedPattern(),
$text,
$embed_matches,
PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
$ref_matches = null;
preg_match_all(
$this->getObjectReferencePattern(),
$text,
$ref_matches,
PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
$results = array();
$sets = array(
'embed' => $embed_matches,
'ref' => $ref_matches,
);
foreach ($sets as $type => $matches) {
$formatted = array();
foreach ($matches as $match) {
$format = array(
'offset' => $match[1][1],
'id' => $match[1][0],
);
if (isset($match[2][0])) {
$format['tail'] = $match[2][0];
}
$formatted[] = $format;
}
$results[$type] = $formatted;
}
return $results;
}
public function markupObjectEmbed(array $matches) {
if (!$this->isFlatText($matches[0])) {
return $matches[0];
}
return $this->markupObject(array(
'type' => 'embed',
'id' => $matches[1],
'options' => idx($matches, 2),
'original' => $matches[0],
));
}
public function markupObjectReference(array $matches) {
if (!$this->isFlatText($matches[0])) {
return $matches[0];
}
return $this->markupObject(array(
'type' => 'ref',
'id' => $matches[1],
'anchor' => idx($matches, 2),
'original' => $matches[0],
));
}
private function markupObject(array $params) {
if (!$this->shouldMarkupObject($params)) {
return $params['original'];
}
$regex = trim(
PhabricatorEnv::getEnvConfig('remarkup.ignored-object-names'));
if ($regex && preg_match($regex, $params['original'])) {
return $params['original'];
}
$engine = $this->getEngine();
$token = $engine->storeText('x');
$metadata_key = self::KEY_RULE_OBJECT.'.'.$this->getObjectNamePrefix();
$metadata = $engine->getTextMetadata($metadata_key, array());
$metadata[] = array(
'token' => $token,
) + $params;
$engine->setTextMetadata($metadata_key, $metadata);
return $token;
}
public function didMarkupText() {
$engine = $this->getEngine();
$metadata_key = self::KEY_RULE_OBJECT.'.'.$this->getObjectNamePrefix();
$metadata = $engine->getTextMetadata($metadata_key, array());
if (!$metadata) {
return;
}
$ids = ipull($metadata, 'id');
$objects = $this->loadObjects($ids);
// For objects that are invalid or which the user can't see, just render
// the original text.
// TODO: We should probably distinguish between these cases and render a
// "you can't see this" state for nonvisible objects.
foreach ($metadata as $key => $spec) {
if (empty($objects[$spec['id']])) {
$engine->overwriteStoredText(
$spec['token'],
$spec['original']);
unset($metadata[$key]);
}
}
$phids = $engine->getTextMetadata(self::KEY_MENTIONED_OBJECTS, array());
foreach ($objects as $object) {
$phids[$object->getPHID()] = $object->getPHID();
}
$engine->setTextMetadata(self::KEY_MENTIONED_OBJECTS, $phids);
$handles = $this->loadHandles($objects);
foreach ($metadata as $key => $spec) {
$handle = $handles[$spec['id']];
$object = $objects[$spec['id']];
switch ($spec['type']) {
case 'ref':
$view = $this->renderObjectRefForAnyMedia(
$object,
$handle,
$spec['anchor'],
$spec['id']);
break;
case 'embed':
$spec['options'] = $this->assertFlatText($spec['options']);
$view = $this->renderObjectEmbedForAnyMedia(
$object,
$handle,
$spec['options']);
break;
}
$engine->overwriteStoredText($spec['token'], $view);
}
$engine->setTextMetadata($metadata_key, array());
}
}

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