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| 11: | namespace Opencart\System\Library;
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| 17: | class Response {
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| 21: | private array $headers = [];
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| 25: | private int $level = 0;
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| 29: | private string $output = '';
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| 36: | public function addHeader(string $header): void {
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| 37: | $this->headers[] = $header;
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| 38: | }
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| 45: | public function getHeaders(): array {
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| 46: | return $this->headers;
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| 47: | }
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| 57: | public function redirect(string $url, int $status = 302): void {
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| 58: | header('Location: ' . str_replace(['&', "\n", "\r"], ['&', '', ''], $url), true, $status);
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| 59: | exit();
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| 60: | }
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| 69: | public function setCompression(int $level): void {
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| 70: | $this->level = $level;
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| 71: | }
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| 80: | public function setOutput(string $output): void {
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| 81: | $this->output = $output;
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| 82: | }
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| 89: | public function getOutput(): string {
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| 90: | return $this->output;
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| 91: | }
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| 101: | private function compress(string $data, int $level = 0): string {
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| 102: | if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false)) {
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| 103: | $encoding = 'gzip';
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| 104: | }
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| 106: | if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'x-gzip') !== false)) {
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| 107: | $encoding = 'x-gzip';
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| 108: | }
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| 110: | if (!isset($encoding) || ($level < -1 || $level > 9)) {
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| 111: | return $data;
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| 112: | }
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| 114: | if (!extension_loaded('zlib') || ini_get('zlib.output_compression')) {
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| 115: | return $data;
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| 116: | }
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| 118: | if (headers_sent()) {
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| 119: | return $data;
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| 120: | }
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| 122: | if (connection_status()) {
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| 123: | return $data;
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| 124: | }
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| 126: | $this->addHeader('Content-Encoding: ' . $encoding);
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| 128: | return gzencode($data, $level);
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| 129: | }
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| 138: | public function output(): void {
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| 139: | if ($this->output) {
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| 140: | $output = $this->level ? $this->compress($this->output, $this->level) : $this->output;
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| 142: | if (!headers_sent()) {
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| 143: | foreach ($this->headers as $header) {
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| 144: | header($header, true);
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| 145: | }
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| 146: | }
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| 147: |
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| 148: | echo $output;
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| 149: | }
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| 150: | }
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| 151: | }
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