read($content, $start, $end); $content = ''; } parent::__construct($content); } /** * 设置语言 * * @param string $lang * * @return $this */ public function lang(string $lang) { $this->lang = $lang; return $this; } public function javascript() { $this->lang = 'javascript'; return $this; } public function html() { $this->lang = 'html'; return $this; } public function java() { $this->lang = 'java'; return $this; } public function python() { $this->lang = 'python'; return $this; } /** * 读取指定行上下区间文件内容. * * @param string $file * @param int $lineNumber * @param int $padding * * @return $this */ public function padding($file, $lineNumber = 1, $padding = 5) { return $this->read($file, $lineNumber - $padding, $lineNumber + $padding); } /** * 读取指定行文件内容. * * @param string $file * @param int $start * @param int $end * * @return $this */ public function read($file, $start = 1, $end = 10) { if (! $file or ! is_readable($file) || $end < $start) { return $this; } $file = fopen($file, 'r'); $line = 0; $source = ''; while (($row = fgets($file)) !== false) { if (++$line > $end) { break; } if ($line >= $start) { $source .= htmlspecialchars($row, ENT_NOQUOTES, config('charset', 'utf-8')); } } fclose($file); return $this->content($source); } protected function build() { if ($this->content instanceof Renderable) { $this->content = $this->content->render(); } return <<formatHtmlAttributes()}>```{$this->lang} {$this->content} ``` EOF; } }