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<?php
/**
* This file is part of PHP Mess Detector.
*
* Copyright (c) Manuel Pichler <[email protected]>.
* All rights reserved.
*
* Licensed under BSD License
* For full copyright and license information, please see the LICENSE file.
* Redistributions of files must retain the above copyright notice.
*
* @author Manuel Pichler <[email protected]>
* @copyright Manuel Pichler. All rights reserved.
* @license https://opensource.org/licenses/bsd-license.php BSD License
* @link http://phpmd.org/
*/
namespace PHPMD\Renderer;
use PHPMD\AbstractRenderer;
use PHPMD\Report;
use SplFileObject;
/**
* This renderer output a html file with all found violations.
*
* @author Premysl Karbula <[email protected]>
* @copyright 2017 Premysl Karbula. All rights reserved.
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*/
class HTMLRenderer extends AbstractRenderer
{
const CATEGORY_PRIORITY = 'category_priority';
const CATEGORY_NAMESPACE = 'category_namespace';
const CATEGORY_RULESET = 'category_ruleset';
const CATEGORY_RULE = 'category_rule';
protected static $priorityTitles = array(
1 => 'Top (1)',
2 => 'High (2)',
3 => 'Moderate (3)',
4 => 'Low (4)',
5 => 'Lowest (5)',
);
// Used in self::colorize() method.
protected static $descHighlightRules = array(
'method' => array( // Method names.
'regex' => 'method\s+(((["\']).*["\'])|(\S+))',
'css-class' => 'hlt-method',
),
'quoted' => array( // Quoted strings.
'regex' => '(["\'][^\'"]+["\'])',
'css-class' => 'hlt-quoted',
),
'variable' => array( // Variables.
'regex' => '(\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)',
'css-class' => 'hlt-variable',
),
);
protected static $compiledHighlightRegex = null;
/**
* Specify how many extra lines are added to a code snippet
* By default 2
* @var int
*/
protected $extraLineInExcerpt = 2;
public function __construct($extraLineInExcerpt = null)
{
if ($extraLineInExcerpt && is_int($extraLineInExcerpt)) {
$this->extraLineInExcerpt = $extraLineInExcerpt;
}
}
/**
* This method will be called on all renderers before the engine starts the
* real report processing.
*
* @return void
*/
public function start()
{
$writer = $this->getWriter();
$mainColor = "#2f838a";
// Avoid inlining styles.
$style = "
<script>
function toggle(id) {
var item = document.getElementById(id);
item.classList.toggle('hidden');
}
</script>
<style>
@media (min-width: 1366px) {
body { max-width: 80%; margin: auto; }
}
body {
font-family: sans-serif;
}
a {
color: $mainColor;
}
a:hover {
color: #333;
}
em {
font-weight: bold;
font-style: italic;
}
h1 {
padding: 0.5ex 0.2ex;
border-bottom: 2px solid #333;
}
table {
width: 100%;
border-spacing: 0;
}
table tr > th {
text-align: left;
}
table caption {
font-weight: bold;
padding: 1ex 0.5ex;
text-align: left;
font-size: 120%;
border-bottom: 2px solid #333;
}
tbody tr:nth-child(odd) {
background: rgba(0, 0, 0, 0.08);
}
tbody tr:hover {
background: #ffee99;
}
thead th {
border-bottom: 1px solid #aaa;
}
table td, table th {
padding: 0.5ex;
}
/* Table 'count' and 'percentage' column */
.t-cnt, .t-pct {
width: 5em;
}
.t-pct {
opacity: 0.8;
font-style: italic;
font-size: 80%;
}
/* Table bar chart */
.t-bar {
height: 0.5ex;
margin-top: 0.5ex;
background-color: $mainColor; /* rgba(47, 131, 138, 0.2); */
}
section, table {
margin-bottom: 2em;
}
#details-link.hidden {
display: none;
}
#details-wrapper.hidden {
display: none;
}
ul.code {
margin: 0;
padding: 0;
}
ul.code.hidden {
display: none;
}
ul.code li {
display: flex;
line-height: 1.4em;
font-family: monospace;
white-space: nowrap;
}
ul.code li:nth-child(odd) {
background-color: rgba(47, 131, 138, 0.1)
}
/* Excerpt: Line number */
ul.code .no {
width: 5%;
min-width: 5em;
text-align: right;
border-right: 1px solid rgba(47, 131, 138, 0.6);
padding-right: 1ex;
box-sizing: border-box;
}
/* Excerpt: Code */
ul.code .cd {
padding-left: 1ex;
white-space: pre-wrap;
box-sizing: border-box;
word-wrap: break-word;
overflow: hidden;
}
.hlt {
background: #ffee99 !important
}
.prio {
color: #333;
float: right;
}
.indx {
padding: 0.5ex 1ex;
background-color: #000;
color: #fff;
text-decoration: none;
}
.indx:hover {
background-color: $mainColor;
color: #fff;
}
/* Problem container */
.prb h3 {
padding: 1ex 0.5ex;
border-bottom: 2px solid #000;
font-size: 95%;
margin: 0;
}
.info-lnk {
font-style: italic !important;
font-weight: normal !important;
text-decoration: none;
}
.info-lnk.blck {
padding: 0.5ex 1ex;
background-color: rgba(47, 131, 138, 0.2);
}
.path-basename {
font-weight: bold;
}
.hlt-info {
display: inline-block;
padding: 2px 4px;
font-style: italic;
}
.hlt-info.quoted {
background-color: #92de71;
}
.hlt-info.variable {
background-color: #a3d2ff;
}
.hlt-info.method {
background-color: #f7c0ff;
}
.sub-info {
padding: 1ex 0.5ex;
}
/* Handle printer friendly styles */
@media print {
body, th { font-size: 10pt; }
.hlt-info { padding: 0; background: none; }
section, table { margin-bottom: 1em; }
h1, h2, h3, table caption { padding: 0.5ex 0.2ex; }
.prb h3 { border-bottom: 0.5px solid #aaa; }
.t-bar { display: none; }
.info-lnk { display: none; }
#details-wrapper { display: block !important; font-size: 90% !important; }
}
</style>";
$style = self::reduceWhitespace($style);
$writer->write("<html><head>{$style}<title>PHPMD Report</title></head><body>" . PHP_EOL);
$header = sprintf("
<header>
<h1>PHPMD Report</h1>
Generated at <em>%s</em>
with <a href='%s' target='_blank'>PHP Mess Detector</a>
on <em>PHP %s</em>
on <em>%s</em>
</header>
", date('Y-m-d H:i'), "https://phpmd.org", \PHP_VERSION, gethostname());
$writer->write($header);
}
/**
* This method will be called when the engine has finished the source analysis
* phase.
*
* @param \PHPMD\Report $report
* @return void
*/
public function renderReport(Report $report)
{
$writer = $this->getWriter();
$index = 0;
$violations = $report->getRuleViolations();
$count = count($violations);
$writer->write(sprintf('<h3>%d problems found</h3>', $count));
// If no problems were found, don't bother with rendering anything else.
if (!$count) {
return;
}
// Render summary tables.
$writer->write("<h2>Summary</h2>");
$categorized = self::sumUpViolations($violations);
$this->writeTable('By priority', 'Priority', $categorized[self::CATEGORY_PRIORITY]);
$this->writeTable('By namespace', 'PHP Namespace', $categorized[self::CATEGORY_NAMESPACE]);
$this->writeTable('By rule set', 'Rule set', $categorized[self::CATEGORY_RULESET]);
$this->writeTable('By name', 'Rule name', $categorized[self::CATEGORY_RULE]);
// Render details of each violation and place the "Details" display toggle.
$writer->write("<h2 style='page-break-before: always'>Details</h2>");
$writer->write("
<a
id='details-link'
class='info-lnk blck'
href='#'
onclick='toggle(\"details-link\"); toggle(\"details-wrapper\"); return false;'
>
Show details ▼
</a>");
$writer->write("<div id='details-wrapper' class='hidden'>");
foreach ($violations as $violation) {
// This is going to be used as ID in HTML (deep anchoring).
$htmlId = "p-" . $index++;
// Get excerpt of the code from validated file.
$excerptHtml = null;
$excerpt = self::getLineExcerpt(
$violation->getFileName(),
$violation->getBeginLine(),
$this->extraLineInExcerpt
);
foreach ($excerpt as $line => $code) {
$class = $line === $violation->getBeginLine() ? " class='hlt'" : null;
$codeHtml = htmlspecialchars($code);
$excerptHtml .= "<li{$class}><div class='no'>{$line}</div><div class='cd'>{$codeHtml}</div></li>";
}
$descHtml = self::colorize(htmlentities($violation->getDescription()));
$filePath = $violation->getFileName();
$fileHtml = "<a href='file://$filePath' target='_blank'>" . self::highlightFile($filePath) . "</a>";
// Create an external link to rule's help, if there's any provided.
$linkHtml = null;
$url = $violation->getRule()->getExternalInfoUrl();
if ($url) {
$linkHtml = "<a class='info-lnk' href='{$url}' target='_blank'>(help)</a>";
}
// HTML snippet handling the toggle to display the file's code.
$showCodeAnchor = "
<a class='info-lnk blck' href='#' onclick='toggle(\"$htmlId-code\"); return false;'>
Show code ▼
</a>";
$prio = self::$priorityTitles[$violation->getRule()->getPriority()];
$html = "
<section class='prb' id='$htmlId'>
<header>
<h3>
<a href='#$htmlId' class='indx'>#{$index}</a>
{$descHtml} {$linkHtml} <span class='prio'>{$prio}</span>
</h3>
</header>
<div class='sub-info'><b>File:</b> {$fileHtml} {$showCodeAnchor}</div>
<ul class='code hidden' id='$htmlId-code'>%s</ul>
</section>";
// Remove unnecessary tab/space characters at the line beginnings.
$html = self::reduceWhitespace($html);
$writer->write(sprintf($html, $excerptHtml));
}
}
/**
* This method will be called the engine has finished the report processing
* for all registered renderers.
*
* @return void
*/
public function end()
{
$writer = $this->getWriter();
$writer->write('</div></body></html>');
}
/**
* Return array of lines from a specified file:line, optionally with extra lines around
* for additional cognitive context.
*
* @return array
*/
protected static function getLineExcerpt($file, $lineNumber, $extra = 0)
{
if (!is_readable($file)) {
return array();
}
$file = new SplFileObject($file);
// We have to subtract 1 to extract correct lines via SplFileObject.
$line = max($lineNumber - 1 - $extra, 0);
$result = array();
if (!$file->eof()) {
$file->seek($line);
for ($i = 0; $i <= ($extra * 2); $i++) {
$result[++$line] = trim((string)$file->current(), "\n");
$file->next();
}
}
return $result;
}
/**
* Take a rule description text and try to decorate/stylize parts of it with HTML.
* Based on self::$descHighlightRules config.
*
* @return string
*/
protected static function colorize($message)
{
// Compile final regex, if not done already.
if (!self::$compiledHighlightRegex) {
$prepared = self::$descHighlightRules;
array_walk($prepared, function (&$value, $key) {
$value = "(?<{$key}>{$value['regex']})";
});
self::$compiledHighlightRegex = "#(" . implode('|', $prepared) . ")#";
}
$rules = self::$descHighlightRules;
return preg_replace_callback(self::$compiledHighlightRegex, function ($matches) use ($rules) {
// Extract currently matched specification of highlighting (Match groups
// are named and we can find out which is not empty.).
$definition = array_keys(array_intersect_key($rules, array_filter($matches)));
$definition = reset($definition);
return "<span class='hlt-info {$definition}'>{$matches[0]}</span>";
}, $message);
}
/**
* Take a file path and return a bit of HTML where the basename is wrapped in styled <span>.
*
* @return string
*/
protected static function highlightFile($path)
{
$file = substr(strrchr($path, "/"), 1);
$dir = str_replace($file, '', $path);
return $dir . "<span class='path-basename'>" . $file . '</span>';
}
/**
* Render a pretty informational table and send the HTML to the writer.
*
* @return void
*/
protected function writeTable($title, $itemsTitle, $items)
{
if (!$items) {
return;
}
$writer = $this->getWriter();
$rows = null;
// We will need to calculate percentages and whatnot.
$max = max($items);
$sum = array_sum($items);
foreach ($items as $name => $count) {
// Calculate chart/bar's percentage width relative to the highest occurring item.
$width = $max !== 0 ? $count / $max * 100 : 0; // Avoid division by zero.
$bar = sprintf(
'<div class="t-bar" style="width: %d%%; opacity: %.2f"></div>',
$width,
min(0.2 + $width / 100, 1) // Minimum opacity for the bar is 0.2.
);
$pct = $sum !== 0 ? sprintf('%.1f', $count / $sum * 100) : '-'; // Avoid division by zero.
$rows .= "<tr>
<td class='t-cnt'>$count</td>
<td class='t-pct'>$pct %</td>
<th class='t-n'>{$name}{$bar}</th>
</tr>";
}
$header = "<thead><tr><th>Count</th><th>%</th><th>$itemsTitle</th></tr></thead>";
$html = "<section><table><caption>$title</caption>{$header}{$rows}</table></section>";
$writer->write(self::reduceWhitespace($html));
}
/**
* Go through passed violations and count occurrences based on pre-specified conditions.
*
* @return array
*/
protected static function sumUpViolations($violations)
{
$result = array(
self::CATEGORY_PRIORITY => array(),
self::CATEGORY_NAMESPACE => array(),
self::CATEGORY_RULESET => array(),
self::CATEGORY_RULE => array(),
);
foreach ($violations as $v) {
// We use "ref" reference to make things somewhat easier to read.
// Also, using a reference to non-existing array index doesn't throw a notice.
$namespaceName = $v->getNamespaceName();
if ($namespaceName) {
$ref = &$result[self::CATEGORY_NAMESPACE][$namespaceName];
$ref = isset($ref) ? $ref + 1 : 1;
}
$rule = $v->getRule();
// Friendly priority -> Add a describing word to "just number".
$friendlyPriority = self::$priorityTitles[$rule->getPriority()];
$ref = &$result[self::CATEGORY_PRIORITY][$friendlyPriority];
$ref = isset($ref) ? $ref + 1 : 1;
$ref = &$result[self::CATEGORY_RULESET][$rule->getRuleSetName()];
$ref = isset($ref) ? $ref + 1 : 1;
$ref = &$result[self::CATEGORY_RULE][$rule->getName()];
$ref = isset($ref) ? $ref + 1 : 1;
}
// Sort numbers in each category from high to low.
foreach ($result as &$inner) {
arsort($inner);
}
return $result;
}
/**
* Reduces two and more whitespaces in a row to a single whitespace to conserve space.
*
* @return string
*/
protected static function reduceWhitespace($input, $eol = true)
{
return preg_replace("#\s+#", " ", $input) . ($eol ? PHP_EOL : null);
}
}