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DiffusionBrowseFileController.php
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Thu, Mar 20, 04:16

DiffusionBrowseFileController.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 DiffusionBrowseFileController extends DiffusionController {
private $corpusType = 'text';
public function processRequest() {
$request = $this->getRequest();
$drequest = $this->getDiffusionRequest();
$path = $drequest->getPath();
$selected = $request->getStr('view');
$needs_blame = ($selected == 'blame' || $selected == 'plainblame');
$file_query = DiffusionFileContentQuery::newFromDiffusionRequest(
$this->diffusionRequest);
$file_query->setNeedsBlame($needs_blame);
$file_query->loadFileContent();
$data = $file_query->getRawData();
if ($selected === 'raw') {
return $this->buildRawResponse($path, $data);
}
// Build the content of the file.
$corpus = $this->buildCorpus(
$selected,
$file_query,
$needs_blame,
$drequest,
$path,
$data);
require_celerity_resource('diffusion-source-css');
if ($this->corpusType == 'text') {
$view_select_panel = $this->renderViewSelectPanel();
} else {
$view_select_panel = null;
}
// Render the page.
$content = array();
$content[] = $this->buildCrumbs(
array(
'branch' => true,
'path' => true,
'view' => 'browse',
));
$content[] = $view_select_panel;
$content[] = $corpus;
$content[] = $this->buildOpenRevisions();
$nav = $this->buildSideNav('browse', true);
$nav->appendChild($content);
$basename = basename($this->getDiffusionRequest()->getPath());
return $this->buildStandardPageResponse(
$nav,
array(
'title' => $basename,
));
}
private function buildCorpus($selected,
$file_query,
$needs_blame,
$drequest,
$path,
$data) {
if (ArcanistDiffUtils::isHeuristicBinaryFile($data)) {
$file = $this->loadFileForData($path, $data);
$file_uri = $file->getBestURI();
if ($file->isViewableImage()) {
$this->corpusType = 'image';
return $this->buildImageCorpus($file_uri);
} else {
$this->corpusType = 'binary';
return $this->buildBinaryCorpus($file_uri, $data);
}
}
// TODO: blame of blame.
switch ($selected) {
case 'plain':
$style =
"margin: 1em 2em; width: 90%; height: 80em; font-family: monospace";
$corpus = phutil_render_tag(
'textarea',
array(
'style' => $style,
),
phutil_escape_html($file_query->getRawData()));
break;
case 'plainblame':
$style =
"margin: 1em 2em; width: 90%; height: 80em; font-family: monospace";
list($text_list, $rev_list, $blame_dict) =
$file_query->getBlameData();
$rows = array();
foreach ($text_list as $k => $line) {
$rev = $rev_list[$k];
if (isset($blame_dict[$rev]['handle'])) {
$author = $blame_dict[$rev]['handle']->getName();
} else {
$author = $blame_dict[$rev]['author'];
}
$rows[] =
sprintf("%-10s %-20s %s", substr($rev, 0, 7), $author, $line);
}
$corpus = phutil_render_tag(
'textarea',
array(
'style' => $style,
),
phutil_escape_html(implode("\n", $rows)));
break;
case 'highlighted':
case 'blame':
default:
require_celerity_resource('syntax-highlighting-css');
list($text_list, $rev_list, $blame_dict) = $file_query->getBlameData();
$text_list = implode("\n", $text_list);
$text_list = PhabricatorSyntaxHighlighter::highlightWithFilename(
$path,
$text_list);
$text_list = explode("\n", $text_list);
$rows = $this->buildDisplayRows($text_list, $rev_list, $blame_dict,
$needs_blame, $drequest, $file_query, $selected);
$corpus_table = phutil_render_tag(
'table',
array(
'class' => "diffusion-source remarkup-code PhabricatorMonospaced",
),
implode("\n", $rows));
$corpus = phutil_render_tag(
'div',
array(
'style' => 'padding: 0pt 2em;',
),
$corpus_table);
break;
}
return $corpus;
}
private function renderViewSelectPanel() {
$request = $this->getRequest();
$select = AphrontFormSelectControl::renderSelectTag(
$request->getStr('view'),
array(
'highlighted' => 'View as Highlighted Text',
'blame' => 'View as Highlighted Text with Blame',
'plain' => 'View as Plain Text',
'plainblame' => 'View as Plain Text with Blame',
'raw' => 'View as raw document',
),
array(
'name' => 'view',
));
$view_select_panel = new AphrontPanelView();
$view_select_form = phutil_render_tag(
'form',
array(
'action' => $request->getRequestURI(),
'method' => 'get',
'class' => 'diffusion-browse-type-form',
),
$select.
' <button>View</button> '.
$this->renderEditButton());
$view_select_panel->appendChild($view_select_form);
$view_select_panel->appendChild('<div style="clear: both;"></div>');
return $view_select_panel;
}
private function renderEditButton() {
$request = $this->getRequest();
$user = $request->getUser();
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
$path = $drequest->getPath();
$line = 1;
$editor_link = $user->loadEditorLink($path, $line, $repository);
if (!$editor_link) {
return null;
}
return phutil_render_tag(
'a',
array(
'href' => $editor_link,
'class' => 'button',
),
'Edit');
}
private function buildDisplayRows($text_list, $rev_list, $blame_dict,
$needs_blame, DiffusionRequest $drequest, $file_query, $selected) {
$last_rev = null;
$color = '#eeeeee';
$rows = array();
$n = 1;
$view = $this->getRequest()->getStr('view');
if ($blame_dict) {
$epoch_list = ipull($blame_dict, 'epoch');
$epoch_max = max($epoch_list);
$epoch_min = min($epoch_list);
$epoch_range = $epoch_max - $epoch_min + 1;
}
$targ = '';
$min_line = 0;
$line = $drequest->getLine();
if (strpos($line, '-') !== false) {
list($min, $max) = explode('-', $line, 2);
$min_line = min($min, $max);
$max_line = max($min, $max);
} else if (strlen($line)) {
$min_line = $line;
$max_line = $line;
}
foreach ($text_list as $k => $line) {
if ($needs_blame) {
// If the line's rev is same as the line above, show empty content
// with same color; otherwise generate blame info. The newer a change
// is, the darker the color.
$rev = $rev_list[$k];
if ($last_rev == $rev) {
$blame_info =
($file_query->getSupportsBlameOnBlame() ?
'<th style="background: '.$color.'; width: 2em;"></th>' : '').
'<th style="background: '.$color.'; width: 9em;"></th>'.
'<th style="background: '.$color.'"></th>';
} else {
$revision_time = null;
if ($blame_dict) {
$color_number = (int)(0xEE -
0xEE * ($blame_dict[$rev]['epoch'] - $epoch_min) / $epoch_range);
$color = sprintf('#%02xee%02x', $color_number, $color_number);
$revision_time = phabricator_datetime(
$blame_dict[$rev]['epoch'],
$this->getRequest()->getUser());
}
$revision_link = self::renderRevision(
$drequest,
substr($rev, 0, 7));
if (!$file_query->getSupportsBlameOnBlame()) {
$prev_link = '';
} else {
$prev_rev = $file_query->getPrevRev($rev);
$path = $drequest->getPath();
$prev_link = self::renderBrowse(
$drequest,
$path,
"\xC2\xAB",
$prev_rev,
$n,
$selected,
'Blame previous revision');
$prev_link = phutil_render_tag(
'th',
array(
'class' => 'diffusion-wide-link',
'style' => 'background: '.$color.'; width: 2em;',
),
$prev_link);
}
if (isset($blame_dict[$rev]['handle'])) {
$author_link = $blame_dict[$rev]['handle']->renderLink();
} else {
$author_link = phutil_escape_html($blame_dict[$rev]['author']);
}
$blame_info =
$prev_link .
'<th style="background: '.$color.'; width: 12em;" title="'.
phutil_escape_html($revision_time).'">'.$revision_link.'</th>'.
'<th style="background: '.$color.'; width: 12em'.
'; font-weight: normal; color: #333;">'.$author_link.'</th>';
$last_rev = $rev;
}
} else {
$blame_info = null;
}
// Highlight the line of interest if needed.
if ($min_line > 0 && ($n >= $min_line && $n <= $max_line)) {
$tr = '<tr style="background: #ffff00;">';
if ($targ == '') {
$targ = '<a id="scroll_target"></a>';
Javelin::initBehavior('diffusion-jump-to',
array('target' => 'scroll_target'));
}
} else {
$tr = '<tr>';
$targ = null;
}
$href = $drequest->generateURI(
array(
'action' => 'browse',
'stable' => true,
));
$href = (string)$href;
$query_params = null;
if ($view) {
$query_params = '?view='.$view;
}
$link = phutil_render_tag(
'a',
array(
'href' => $href.'$'.$n.$query_params,
),
$n);
$rows[] = $tr.$blame_info.
'<th class="diffusion-wide-link">'.$link.'</th>'.
'<td>'.$targ.$line.'</td></tr>';
++$n;
}
return $rows;
}
private static function renderRevision(DiffusionRequest $drequest,
$revision) {
$callsign = $drequest->getCallsign();
$name = 'r'.$callsign.$revision;
return phutil_render_tag(
'a',
array(
'href' => '/'.$name,
),
$name
);
}
private static function renderBrowse(
DiffusionRequest $drequest,
$path,
$name = null,
$rev = null,
$line = null,
$view = null,
$title = null) {
$callsign = $drequest->getCallsign();
if ($name === null) {
$name = $path;
}
$at = null;
if ($rev) {
$at = ';'.$rev;
}
if ($view) {
$view = '?view='.$view;
}
if ($line) {
$line = '$'.$line;
}
return phutil_render_tag(
'a',
array(
'href' => "/diffusion/{$callsign}/browse/{$path}{$at}{$line}{$view}",
'title' => $title,
),
$name
);
}
private function loadFileForData($path, $data) {
$hash = PhabricatorHash::digest($data);
$file = id(new PhabricatorFile())->loadOneWhere(
'contentHash = %s LIMIT 1',
$hash);
if (!$file) {
// We're just caching the data; this is always safe.
$unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
$file = PhabricatorFile::newFromFileData(
$data,
array(
'name' => basename($path),
));
unset($unguarded);
}
return $file;
}
private function buildRawResponse($path, $data) {
$file = $this->loadFileForData($path, $data);
return id(new AphrontRedirectResponse())->setURI($file->getBestURI());
}
private function buildImageCorpus($file_uri) {
$panel = new AphrontPanelView();
$panel->setHeader('Image');
$panel->addButton($this->renderEditButton());
$panel->appendChild(
phutil_render_tag(
'img',
array(
'src' => $file_uri,
)));
return $panel;
}
private function buildBinaryCorpus($file_uri, $data) {
$panel = new AphrontPanelView();
$panel->setHeader('Binary File');
$panel->addButton($this->renderEditButton());
$panel->appendChild(
'<p>'.
'This is a binary file. '.
'It is '.number_format(strlen($data)).' bytes in length.'.
'</p>');
$panel->addButton(
phutil_render_tag(
'a',
array(
'href' => $file_uri,
'class' => 'button green',
),
'Download Binary File...'));
return $panel;
}
}

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