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DiffusionBrowseFileController.php
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Wed, Mar 26, 05:20

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 {
// Image types we want to display inline using <img> tags
protected $imageTypes = array(
'png' => 'image/png',
'gif' => 'image/gif',
'ico' => 'image/png',
'jpg' => 'image/jpeg',
'jpeg'=> 'image/jpeg'
);
// Document types that should trigger link to ?view=raw
protected $documentTypes = array(
'pdf'=> 'application/pdf',
'ps' => 'application/postscript',
);
public function processRequest() {
// Build the view selection form.
$select_map = 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',
);
$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') {
$response = new AphrontFileResponse();
$response->setContent($data);
$mime_type = $this->getDocumentType($path);
if ($mime_type) {
$response->setMimeType($mime_type);
} else {
$as_filename = idx(pathinfo($path), 'basename');
$response->setDownload($as_filename);
}
return $response;
}
$select = '<select name="view">';
foreach ($select_map as $k => $v) {
$option = phutil_render_tag(
'option',
array(
'value' => $k,
'selected' => ($k == $selected) ? 'selected' : null,
),
phutil_escape_html($v));
$select .= $option;
}
$select .= '</select>';
require_celerity_resource('diffusion-source-css');
$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>');
$view_select_panel->appendChild($view_select_form);
$user = $request->getUser();
if ($user) {
$line = 1;
$repository = $this->getDiffusionRequest()->getRepository();
$editor_link = $user->loadEditorLink($path, $line, $repository);
if ($editor_link) {
$view_select_panel->addButton(
phutil_render_tag(
'a',
array(
'href' => $editor_link,
'class' => 'button',
),
'Edit'
));
}
}
$view_select_panel->appendChild('<div style="clear: both;"></div>');
// Build the content of the file.
$corpus = $this->buildCorpus(
$selected,
$file_query,
$needs_blame,
$drequest,
$path,
$data
);
// 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,
));
}
/**
* Returns a content-type corrsponding to an image file extension
*
* @param string $path File path
* @return mixed A content-type string or NULL if path doesn't end with a
* recognized image extension
*/
public function getImageType($path) {
$ext = pathinfo($path);
$ext = idx($ext, 'extension');
return idx($this->imageTypes, $ext);
}
/**
* Returns a content-type corresponding to an document file extension
*
* @param string $path File path
* @return mixed A content-type string or NULL if path doesn't end with a
* recognized document extension
*/
public function getDocumentType($path) {
$ext = pathinfo($path);
$ext = idx($ext, 'extension');
return idx($this->documentTypes, $ext);
}
private function buildCorpus($selected,
$file_query,
$needs_blame,
$drequest,
$path,
$data) {
$image_type = $this->getImageType($path);
if ($image_type && !$selected) {
$corpus = phutil_render_tag(
'img',
array(
'style' => 'padding-bottom: 10px',
'src' => 'data:'.$image_type.';base64,'.base64_encode($data),
)
);
return $corpus;
}
$document_type = $this->getDocumentType($path);
if (($document_type && !$selected) || !phutil_is_utf8($data)) {
$data = $file_query->getRawData();
$document_type_description = $document_type ? $document_type : 'binary';
$corpus = phutil_render_tag(
'p',
array(
'style' => 'text-align: center;'
),
phutil_render_tag(
'a',
array(
'href' => '?view=raw',
'class' => 'button'
),
"View $document_type_description"
)
);
return $corpus;
}
// TODO: blame of blame.
switch ($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 $corpus;
}
private function buildDisplayRows($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: '.$color.'"></th>';
} else {
if ($blame_dict) {
$color_number = (int)(0xEE -
0xEE * ($blame_dict[$rev]['epoch'] - $epoch_min) / $epoch_range);
$color = sprintf('#%02xee%02x', $color_number, $color_number);
}
$revision_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;">'.$revision_link.'</th>'.
'<th style="background: '.$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;
}
// Create the row display.
$uri_path = $drequest->getUriPath();
$uri_rev = $drequest->getStableCommitName();
$uri_view = $view
? '?view='.$view
: null;
$l = phutil_render_tag(
'a',
array(
'href' => $uri_path.';'.$uri_rev.'$'.$n.$uri_view,
),
$n);
$rows[] = $tr.$blame_info.
'<th class="diffusion-wide-link">'.$l.'</th>'.
'<td>'.$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
);
}
}

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