diff options
Diffstat (limited to 'application/service/renderer.php')
| -rw-r--r-- | application/service/renderer.php | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/application/service/renderer.php b/application/service/renderer.php new file mode 100644 index 000000000..6baf62c78 --- /dev/null +++ b/application/service/renderer.php @@ -0,0 +1,187 @@ +<?php +/* + * Copyright 2017 Florian "Bluewind" Pritz <bluewind@server-speed.net> + * + * Licensed under AGPLv3 + * (see COPYING for full license text) + * + */ + +namespace service; +class renderer { + + + /** + * @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; + } + + +} |