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DifferentialChangesetViewController.php
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Tue, Feb 11, 10:00

DifferentialChangesetViewController.php
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<?php
/*
* Copyright 2011 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.
*/
class DifferentialChangesetViewController extends DifferentialController {
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());
switch ($view) {
case 'new':
return $this->buildRawFileResponse($changeset->makeNewFile());
case 'old':
return $this->buildRawFileResponse($changeset->makeOldFile());
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();
}
$left_tmp = new TempFile();
$right_tmp = new TempFile();
Filesystem::writeFile($left_tmp, $left_data);
Filesystem::writeFile($right_tmp, $right_data);
list($err, $stdout) = exec_manual(
'/usr/bin/diff -U65535 %s %s',
$left_tmp,
$right_tmp);
$choice = nonempty($left, $right);
if ($stdout) {
$parser = new ArcanistDiffParser();
$changes = $parser->parseDiff($stdout);
$diff = DifferentialDiff::newFromRawChanges($changes);
$changesets = $diff->getChangesets();
$first = reset($changesets);
$choice->attachHunks($first->getHunks());
} else {
$choice->attachHunks(array());
}
$changeset = $choice;
$changeset->setID(null);
}
$range_s = null;
$range_e = null;
$mask = array();
$range = $request->getStr('range');
if ($range) {
$match = null;
if (preg_match('@^(\d+)-(\d+)(?:/(\d+)-(\d+))?$@', $range, $match)) {
$range_s = (int)$match[1];
$range_e = (int)$match[2];
if (count($match) > 3) {
$start = (int)$match[3];
$len = (int)$match[4];
for ($ii = $start; $ii < $start + $len; $ii++) {
$mask[$ii] = true;
}
}
}
}
$parser = new DifferentialChangesetParser();
$parser->setChangeset($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);
$phids = array();
foreach ($inlines as $inline) {
$parser->parseInlineComment($inline);
$phids[$inline->getAuthorPHID()] = true;
}
$phids = array_keys($phids);
$handles = id(new PhabricatorObjectHandleData($phids))
->loadHandles();
$parser->setHandles($handles);
$factory = new DifferentialMarkupEngineFactory();
$engine = $factory->newDifferentialCommentMarkupEngine();
$parser->setMarkupEngine($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, $mask);
if ($request->isAjax()) {
return id(new AphrontAjaxResponse())
->setContent($output);
}
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);
if (!$vs) {
$detail->addButton(
phutil_render_tag(
'a',
array(
'href' => $request->getRequestURI()->alter('view', 'old'),
'class' => 'grey button small',
),
'View Raw File (Old Version)'));
$detail->addButton(
phutil_render_tag(
'a',
array(
'href' => $request->getRequestURI()->alter('view', 'new'),
'class' => 'grey button small',
),
'View Raw File (New Version)'));
}
$detail->setRevisionID($request->getInt('revision_id'));
$output =
id(new DifferentialPrimaryPaneView())
->setLineWidthFromChangesets(array($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,
$author_phid);
}
private function buildRawFileResponse($text) {
return id(new AphrontFileResponse())
->setMimeType('text/plain')
->setContent($text);
}
}

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