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DifferentialChangesetViewController.php
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Wed, Nov 13, 06:50

DifferentialChangesetViewController.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class DifferentialChangesetViewController extends DifferentialController {
public function shouldRequireLogin() {
return !$this->allowsAnonymousAccess();
}
public function processRequest() {
$request = $this->getRequest();
$author_phid = $request->getUser()->getPHID();
$rendering_reference = $request->getStr('ref');
$parts = explode('/', $rendering_reference);
if (count($parts) == 2) {
list($id, $vs) = $parts;
} else {
$id = $parts[0];
$vs = 0;
}
$id = (int)$id;
$vs = (int)$vs;
$changeset = id(new DifferentialChangeset())->load($id);
if (!$changeset) {
return new Aphront404Response();
}
$view = $request->getStr('view');
if ($view) {
$changeset->attachHunks($changeset->loadHunks());
$phid = idx($changeset->getMetadata(), "$view:binary-phid");
if ($phid) {
return id(new AphrontRedirectResponse())->setURI("/file/info/$phid/");
}
switch ($view) {
case 'new':
return $this->buildRawFileResponse($changeset, $is_new = true);
case 'old':
return $this->buildRawFileResponse($changeset, $is_new = false);
default:
return new Aphront400Response();
}
}
if ($vs && ($vs != -1)) {
$vs_changeset = id(new DifferentialChangeset())->load($vs);
if (!$vs_changeset) {
return new Aphront404Response();
}
}
if (!$vs) {
$right = $changeset;
$left = null;
$right_source = $right->getID();
$right_new = true;
$left_source = $right->getID();
$left_new = false;
$render_cache_key = $right->getID();
} else if ($vs == -1) {
$right = null;
$left = $changeset;
$right_source = $left->getID();
$right_new = false;
$left_source = $left->getID();
$left_new = true;
$render_cache_key = null;
} else {
$right = $changeset;
$left = $vs_changeset;
$right_source = $right->getID();
$right_new = true;
$left_source = $left->getID();
$left_new = true;
$render_cache_key = null;
}
if ($left) {
$left->attachHunks($left->loadHunks());
}
if ($right) {
$right->attachHunks($right->loadHunks());
}
if ($left) {
$left_data = $left->makeNewFile();
if ($right) {
$right_data = $right->makeNewFile();
} else {
$right_data = $left->makeOldFile();
}
$engine = new PhabricatorDifferenceEngine();
$synthetic = $engine->generateChangesetFromFileContent(
$left_data,
$right_data);
$choice = nonempty($left, $right);
$choice->attachHunks($synthetic->getHunks());
$changeset = $choice;
}
$coverage = null;
if ($right && $right->getDiffID()) {
$unit = id(new DifferentialDiffProperty())->loadOneWhere(
'diffID = %d AND name = %s',
$right->getDiffID(),
'arc:unit');
if ($unit) {
$coverage = array();
foreach ($unit->getData() as $result) {
$result_coverage = idx($result, 'coverage');
if (!$result_coverage) {
continue;
}
$file_coverage = idx($result_coverage, $right->getFileName());
if (!$file_coverage) {
continue;
}
$coverage[] = $file_coverage;
}
$coverage = ArcanistUnitTestResult::mergeCoverage($coverage);
}
}
$spec = $request->getStr('range');
list($range_s, $range_e, $mask) =
DifferentialChangesetParser::parseRangeSpecification($spec);
$parser = new DifferentialChangesetParser();
$parser->setCoverage($coverage);
$parser->setChangeset($changeset);
$parser->setRenderingReference($rendering_reference);
$parser->setRenderCacheKey($render_cache_key);
$parser->setRightSideCommentMapping($right_source, $right_new);
$parser->setLeftSideCommentMapping($left_source, $left_new);
$parser->setWhitespaceMode($request->getStr('whitespace'));
// Load both left-side and right-side inline comments.
$inlines = $this->loadInlineComments(
array($left_source, $right_source),
$author_phid);
if ($left_new) {
$inlines = array_merge(
$inlines,
$this->buildLintInlineComments($left));
}
if ($right_new) {
$inlines = array_merge(
$inlines,
$this->buildLintInlineComments($right));
}
$phids = array();
foreach ($inlines as $inline) {
$parser->parseInlineComment($inline);
if ($inline->getAuthorPHID()) {
$phids[$inline->getAuthorPHID()] = true;
}
}
$phids = array_keys($phids);
$handles = id(new PhabricatorObjectHandleData($phids))
->loadHandles();
$parser->setHandles($handles);
$engine = PhabricatorMarkupEngine::newDifferentialMarkupEngine();
$parser->setMarkupEngine($engine);
if ($request->isAjax()) {
// TODO: This is sort of lazy, the effect is just to not render "Edit"
// links on the "standalone view".
$parser->setUser($request->getUser());
}
$output = $parser->render($range_s, $range_e, $mask);
$mcov = $parser->renderModifiedCoverage();
if ($request->isAjax()) {
$coverage = array(
'differential-mcoverage-'.md5($changeset->getFilename()) => $mcov,
);
return id(new PhabricatorChangesetResponse())
->setRenderedChangeset($output)
->setCoverage($coverage);
}
Javelin::initBehavior('differential-show-more', array(
'uri' => '/differential/changeset/',
'whitespace' => $request->getStr('whitespace'),
));
Javelin::initBehavior('differential-comment-jump', array());
$detail = new DifferentialChangesetDetailView();
$detail->setChangeset($changeset);
$detail->appendChild($output);
$detail->setVsChangesetID($left_source);
$output =
id(new DifferentialPrimaryPaneView())
->setLineWidthFromChangesets(array($changeset))
->appendChild(
'<div class="differential-review-stage" '.
'id="differential-review-stage">'.
$detail->render().
'</div>');
return $this->buildStandardPageResponse(
array(
$output
),
array(
'title' => 'Changeset View',
));
}
private function loadInlineComments(array $changeset_ids, $author_phid) {
$changeset_ids = array_unique(array_filter($changeset_ids));
if (!$changeset_ids) {
return;
}
return id(new DifferentialInlineComment())->loadAllWhere(
'changesetID IN (%Ld) AND (commentID IS NOT NULL OR authorPHID = %s)',
$changeset_ids,
$author_phid);
}
private function buildRawFileResponse(
DifferentialChangeset $changeset,
$is_new) {
if ($is_new) {
$key = 'raw:new:phid';
} else {
$key = 'raw:old:phid';
}
$metadata = $changeset->getMetadata();
$file = null;
$phid = idx($metadata, $key);
if ($phid) {
$file = id(new PhabricatorFile())->loadOneWhere(
'phid = %s',
$phid);
}
if (!$file) {
// This is just building a cache of the changeset content in the file
// tool, and is safe to run on a read pathway.
$unguard = AphrontWriteGuard::beginScopedUnguardedWrites();
if ($is_new) {
$data = $changeset->makeNewFile();
} else {
$data = $changeset->makeOldFile();
}
$file = PhabricatorFile::newFromFileData(
$data,
array(
'name' => $changeset->getFilename(),
'mime-type' => 'text/plain',
));
$metadata[$key] = $file->getPHID();
$changeset->setMetadata($metadata);
$changeset->save();
unset($unguard);
}
return id(new AphrontRedirectResponse())
->setURI($file->getBestURI());
}
private function buildLintInlineComments($changeset) {
$lint = id(new DifferentialDiffProperty())->loadOneWhere(
'diffID = %d AND name = %s',
$changeset->getDiffID(),
'arc:lint');
if (!$lint) {
return array();
}
$lint = $lint->getData();
$inlines = array();
foreach ($lint as $msg) {
if ($msg['path'] != $changeset->getFilename()) {
continue;
}
$inline = new DifferentialInlineComment();
$inline->setChangesetID($changeset->getID());
$inline->setIsNewFile(true);
$inline->setSyntheticAuthor('Lint: '.$msg['name']);
$inline->setLineNumber($msg['line']);
$inline->setLineLength(0);
$inline->setContent('%%%'.$msg['description'].'%%%');
$inlines[] = $inline;
}
return $inlines;
}
}

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