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<?php
/*
* Copyright 2017 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under AGPLv3
* (see COPYING for full license text)
*
*/
namespace service;
class renderer {
private $output_cache;
private $mfile;
private $data;
/**
* @param $output_cache output cache object
* @param $mfile mfile object
* @param $data data for the rendering of views
*/
public function __construct($output_cache, $mfile, $data)
{
$this->output_cache = $output_cache;
$this->mfile = $mfile;
$this->data = $data;
}
private function colorify($file, $lexer, $anchor_id = false)
{
$output = "";
$lines_to_remove = 0;
$output .= '<div class="code content table">'."\n";
$output .= '<div class="highlight"><code class="code-container">'."\n";
$content = file_get_contents($file);
$linecount = count(explode("\n", $content));
$content = $this->reformat_json($lexer, $linecount, $content);
if ($lexer == "ascii") {
// TODO: use exec safe and catch exception
$ret = (new \libraries\ProcRunner(array('ansi2html', '-p', '-m')))
->input($content)
->forbid_stderr()
->exec();
// Last line is empty
$lines_to_remove = 1;
} else {
// TODO: use exec safe and catch exception
$ret = (new \libraries\ProcRunner(array('pygmentize', '-F', 'codetagify', '-O', 'encoding=guess,outencoding=utf8,stripnl=False', '-l', $lexer, '-f', 'html')))
->input($content)
->exec();
// Last 2 items are "</pre></div>" and ""
$lines_to_remove = 2;
}
$buf = explode("\n", $ret["stdout"]);
$line_count = count($buf);
for ($i = 1; $i <= $lines_to_remove; $i++) {
unset($buf[$line_count - $i]);
}
foreach ($buf as $key => $line) {
$line_number = $key + 1;
if ($key == 0) {
$line = str_replace("<div class=\"highlight\"><pre>", "", $line);
}
$anchor = "n$line_number";
if ($anchor_id !== false) {
$anchor = "n-$anchor_id-$line_number";
}
if ($line === "") {
$line = "<br>";
}
// Be careful not to add superflous whitespace here (we are in a <code>)
$output .= "<div class=\"table-row\">"
."<a href=\"#$anchor\" class=\"linenumber table-cell\">"
."<span class=\"anchor\" id=\"$anchor\"> </span>"
."</a>"
."<span class=\"line table-cell\">".$line."</span><!--\n";
$output .= "--></div>";
}
$output .= "</code></div>";
$output .= "</div>";
return array(
"return_value" => $ret["return_code"],
"output" => $output
);
}
public function highlight_file($filedata, $lexer, $is_multipaste)
{
// highlight the file and cache the result, fall back to plain text if $lexer fails
foreach (array($lexer, "text") as $lexer) {
$highlit = cache_function($filedata['data_id'].'_'.$lexer, 100,
function() use ($filedata, $lexer, $is_multipaste) {
$file = $this->mfile->file($filedata['data_id']);
if ($lexer == "rmd") {
ob_start();
echo '<div class="code content table markdownrender">'."\n";
echo '<div class="table-row">'."\n";
echo '<div class="table-cell">'."\n";
require_once(APPPATH."/third_party/parsedown/Parsedown.php");
$parsedown = new \Parsedown();
echo $parsedown->text(file_get_contents($file));
echo '</div></div></div>';
return array(
"output" => ob_get_clean(),
"return_value" => 0,
);
} else {
return $this->colorify($file, $lexer, $is_multipaste ? $filedata["id"] : false);
}
});
if ($highlit["return_value"] == 0) {
break;
} else {
$message = "Error trying to process the file. Either the lexer is unknown or something is broken.";
if ($lexer != "text") {
$message .= " Falling back to plain text.";
}
$this->output_cache->render_now(
array("error_message" => "<p>$message</p>"),
"file/fragments/alert-wide"
);
}
}
$data = array_merge($this->data, array(
'title' => htmlspecialchars($filedata['filename']),
'id' => $filedata["id"],
'current_highlight' => htmlspecialchars($lexer),
'timeout' => $this->mfile->get_timeout_string($filedata["id"]),
'filedata' => $filedata,
));
$this->output_cache->render_now($data, 'file/html_paste_header');
$this->output_cache->render_now($highlit["output"]);
$this->output_cache->render_now($data, 'file/html_paste_footer');
}
/**
* @param $lexer
* @param $linecount
* @param $content
* @return string
*/
private function reformat_json($lexer, $linecount, $content)
{
if ($lexer !== "json" || $linecount !== 1) {
return $content;
}
$decoded_json = json_decode($content);
if ($decoded_json === null || $decoded_json === false) {
return $content;
}
$pretty_json = json_encode($decoded_json, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
if ($pretty_json === false) {
return $content;
}
$this->output_cache->render_now(
array(
"error_type" => "alert-info",
"error_message" => "<p>The file below has been reformated for readability. It may differ from the original.</p>"
),
"file/fragments/alert-wide"
);
return $pretty_json;
}
}
|
