PHP OC_Image::valid方法代码示例

 public static function postAvatar($args)
 {
     \OC_JSON::checkLoggedIn();
     \OC_JSON::callCheck();
     $user = \OC_User::getUser();
     if (isset($_POST['path'])) {
         $path = stripslashes($_POST['path']);
         $view = new \OC\Files\View('/' . $user . '/files');
         $fileInfo = $view->getFileInfo($path);
         if ($fileInfo['encrypted'] === true) {
             $fileName = $view->toTmpFile($path);
         } else {
             $fileName = $view->getLocalFile($path);
         }
     } elseif (!empty($_FILES)) {
         $files = $_FILES['files'];
         if ($files['error'][0] === 0 && is_uploaded_file($files['tmp_name'][0]) && !\OC\Files\Filesystem::isFileBlacklisted($files['tmp_name'][0])) {
             \OC\Cache::set('avatar_upload', file_get_contents($files['tmp_name'][0]), 7200);
             $view = new \OC\Files\View('/' . $user . '/cache');
             $fileName = $view->getLocalFile('avatar_upload');
             unlink($files['tmp_name'][0]);
         }
     } else {
         $l = new \OC_L10n('core');
         \OC_JSON::error(array("data" => array("message" => $l->t("No image or file provided"))));
         return;
     }
     try {
         $image = new \OC_Image();
         $image->loadFromFile($fileName);
         $image->fixOrientation();
         if ($image->valid()) {
             \OC\Cache::set('tmpavatar', $image->data(), 7200);
             \OC_JSON::error(array("data" => "notsquare"));
         } else {
             $l = new \OC_L10n('core');
             $mimeType = $image->mimeType();
             if ($mimeType !== 'image/jpeg' && $mimeType !== 'image/png') {
                 \OC_JSON::error(array("data" => array("message" => $l->t("Unknown filetype"))));
             }
             if (!$image->valid()) {
                 \OC_JSON::error(array("data" => array("message" => $l->t("Invalid image"))));
             }
         }
     } catch (\Exception $e) {
         \OC_JSON::error(array("data" => array("message" => $e->getMessage())));
     }
 }

 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     $this->initCmd();
     if (is_null($this->cmd)) {
         return false;
     }
     $absPath = $fileview->toTmpFile($path);
     $tmpDir = get_temp_dir();
     $defaultParameters = ' --headless --nologo --nofirststartwizard --invisible --norestore -convert-to pdf -outdir ';
     $clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);
     $exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath);
     $export = 'export HOME=/' . $tmpDir;
     shell_exec($export . "\n" . $exec);
     //create imagick object from pdf
     try {
         $pdf = new \imagick($absPath . '.pdf' . '[0]');
         $pdf->setImageFormat('jpg');
     } catch (\Exception $e) {
         unlink($absPath);
         unlink($absPath . '.pdf');
         \OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
         return false;
     }
     $image = new \OC_Image();
     $image->loadFromData($pdf);
     unlink($absPath);
     unlink($absPath . '.pdf');
     return $image->valid() ? $image : false;
 }

 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     // TODO: use proc_open() and stream the source file ?
     $absPath = \OC_Helper::tmpFile();
     $tmpPath = \OC_Helper::tmpFile();
     $handle = $fileview->fopen($path, 'rb');
     // we better use 5MB (1024 * 1024 * 5 = 5242880) instead of 1MB.
     // in some cases 1MB was no enough to generate thumbnail
     $firstmb = stream_get_contents($handle, 5242880);
     file_put_contents($absPath, $firstmb);
     if (self::$avconvBinary) {
         $cmd = self::$avconvBinary . ' -an -y -ss 5' . ' -i ' . escapeshellarg($absPath) . ' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) . ' > /dev/null 2>&1';
     } else {
         $cmd = self::$ffmpegBinary . ' -y -ss 5' . ' -i ' . escapeshellarg($absPath) . ' -f mjpeg -vframes 1' . ' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) . ' ' . escapeshellarg($tmpPath) . ' > /dev/null 2>&1';
     }
     exec($cmd, $output, $returnCode);
     unlink($absPath);
     if ($returnCode === 0) {
         $image = new \OC_Image();
         $image->loadFromFile($tmpPath);
         unlink($tmpPath);
         return $image->valid() ? $image : false;
     }
     return false;
 }

 /**
  * @param string $path
  * @param int $maxX
  * @param int $maxY
  * @param boolean $scalingup
  * @param \OC\Files\View $fileview
  * @return bool|\OC_Image
  */
 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     $content = $fileview->fopen($path, 'r');
     $content = stream_get_contents($content);
     //don't create previews of empty text files
     if (trim($content) === '') {
         return false;
     }
     $lines = preg_split("/\r\n|\n|\r/", $content);
     $fontSize = 5;
     //5px
     $lineSize = ceil($fontSize * 1.25);
     $image = imagecreate($maxX, $maxY);
     imagecolorallocate($image, 255, 255, 255);
     $textColor = imagecolorallocate($image, 0, 0, 0);
     foreach ($lines as $index => $line) {
         $index = $index + 1;
         $x = (int) 1;
         $y = (int) ($index * $lineSize) - $fontSize;
         imagestring($image, 1, $x, $y, $line, $textColor);
         if ($index * $lineSize >= $maxY) {
             break;
         }
     }
     $image = new \OC_Image($image);
     return $image->valid() ? $image : false;
 }

 public function getThumbnail($path)
 {
     $gallery_path = \OCP\Config::getSystemValue('datadirectory') . '/' . \OC_User::getUser() . '/gallery';
     if (file_exists($gallery_path . $path)) {
         return new \OC_Image($gallery_path . $path);
     }
     if (!\OC_Filesystem::file_exists($path)) {
         \OC_Log::write(self::TAG, 'File ' . $path . ' don\'t exists', \OC_Log::WARN);
         return false;
     }
     $image = new \OC_Image();
     $image->loadFromFile(\OC_Filesystem::getLocalFile($path));
     if (!$image->valid()) {
         return false;
     }
     $image->fixOrientation();
     $ret = $image->preciseResize(floor(150 * $image->width() / $image->height()), 150);
     if (!$ret) {
         \OC_Log::write(self::TAG, 'Couldn\'t resize image', \OC_Log::ERROR);
         unset($image);
         return false;
     }
     $image->save($gallery_path . '/' . $path);
     return $image;
 }

 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     try {
         $svg = new Imagick();
         $svg->setBackgroundColor(new \ImagickPixel('transparent'));
         $content = stream_get_contents($fileview->fopen($path, 'r'));
         if (substr($content, 0, 5) !== '<?xml') {
             $content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
         }
         // Do not parse SVG files with references
         if (stripos($content, 'xlink:href') !== false) {
             return false;
         }
         $svg->readImageBlob($content);
         $svg->setImageFormat('png32');
     } catch (\Exception $e) {
         \OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
         return false;
     }
     //new image object
     $image = new \OC_Image();
     $image->loadFromData($svg);
     //check if image object is valid
     return $image->valid() ? $image : false;
 }

 /**
  * sets the users avatar
  * @param \OC_Image|resource|string $data OC_Image, imagedata or path to set a new avatar
  * @throws Exception if the provided file is not a jpg or png image
  * @throws Exception if the provided image is not valid
  * @throws \OC\NotSquareException if the image is not square
  * @return void
  */
 public function set($data)
 {
     if ($data instanceof OC_Image) {
         $img = $data;
         $data = $img->data();
     } else {
         $img = new OC_Image($data);
     }
     $type = substr($img->mimeType(), -3);
     if ($type === 'peg') {
         $type = 'jpg';
     }
     if ($type !== 'jpg' && $type !== 'png') {
         $l = \OC_L10N::get('lib');
         throw new \Exception($l->t("Unknown filetype"));
     }
     if (!$img->valid()) {
         $l = \OC_L10N::get('lib');
         throw new \Exception($l->t("Invalid image"));
     }
     if (!($img->height() === $img->width())) {
         throw new \OC\NotSquareException();
     }
     $this->view->unlink('avatar.jpg');
     $this->view->unlink('avatar.png');
     $this->view->file_put_contents('avatar.' . $type, $data);
 }

 /**
  * {@inheritDoc}
  */
 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     //get fileinfo
     $fileInfo = $fileview->getFileInfo($path);
     if (!$fileInfo) {
         return false;
     }
     $maxSizeForImages = \OC::$server->getConfig()->getSystemValue('preview_max_filesize_image', 50);
     $size = $fileInfo->getSize();
     if ($maxSizeForImages !== -1 && $size > $maxSizeForImages * 1024 * 1024) {
         return false;
     }
     $image = new \OC_Image();
     $useTempFile = $fileInfo->isEncrypted() || !$fileInfo->getStorage()->isLocal();
     if ($useTempFile) {
         $fileName = $fileview->toTmpFile($path);
     } else {
         $fileName = $fileview->getLocalFile($path);
     }
     $image->loadFromFile($fileName);
     $image->fixOrientation();
     if ($useTempFile) {
         unlink($fileName);
     }
     if ($image->valid()) {
         $image->scaleDownToFit($maxX, $maxY);
         return $image;
     }
     return false;
 }

 public static function getThumbnail($image_name, $owner = null)
 {
     if (!$owner) {
         $owner = OCP\USER::getUser();
     }
     $save_dir = OCP\Config::getSystemValue("datadirectory") . '/' . $owner . '/gallery/';
     $save_dir .= dirname($image_name) . '/';
     $image_path = $image_name;
     $thumb_file = $save_dir . basename($image_name);
     if (!is_dir($save_dir)) {
         mkdir($save_dir, 0777, true);
     }
     if (file_exists($thumb_file)) {
         $image = new OC_Image($thumb_file);
     } else {
         $image_path = OC_Filesystem::getLocalFile($image_path);
         if (!file_exists($image_path)) {
             return null;
         }
         $image = new OC_Image($image_path);
         if ($image->valid()) {
             $image->centerCrop(200);
             $image->fixOrientation();
             $image->save($thumb_file);
         }
     }
     if ($image->valid()) {
         return $image;
     } else {
         $image->destroy();
     }
     return null;
 }

 /**
  * {@inheritDoc}
  */
 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     $this->initCmd();
     if (is_null($this->cmd)) {
         return false;
     }
     $absPath = $fileview->toTmpFile($path);
     $tmpDir = \OC::$server->getTempManager()->getTempBaseDir();
     $defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId() . '/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ';
     $clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);
     $exec = $this->cmd . $clParameters . escapeshellarg($tmpDir) . ' ' . escapeshellarg($absPath);
     shell_exec($exec);
     //create imagick object from pdf
     $pdfPreview = null;
     try {
         list($dirname, , , $filename) = array_values(pathinfo($absPath));
         $pdfPreview = $dirname . '/' . $filename . '.pdf';
         $pdf = new \imagick($pdfPreview . '[0]');
         $pdf->setImageFormat('jpg');
     } catch (\Exception $e) {
         unlink($absPath);
         unlink($pdfPreview);
         \OCP\Util::writeLog('core', $e->getmessage(), \OCP\Util::ERROR);
         return false;
     }
     $image = new \OC_Image();
     $image->loadFromData($pdf);
     unlink($absPath);
     unlink($pdfPreview);
     if ($image->valid()) {
         $image->scaleDownToFit($maxX, $maxY);
         return $image;
     }
     return false;
 }

 /**
  * Generates a default image when the file has no cover
  *
  * @return bool|\OCP\IImage false if the default image is missing or invalid
  */
 private function getNoCoverThumbnail()
 {
     $icon = \OC::$SERVERROOT . '/core/img/filetypes/audio.png';
     if (!file_exists($icon)) {
         return false;
     }
     $image = new \OC_Image();
     $image->loadFromFile($icon);
     return $image->valid() ? $image : false;
 }

 public function testValid()
 {
     $img = new \OC_Image(OC::$SERVERROOT . '/tests/data/testimage.png');
     $this->assertTrue($img->valid());
     $text = base64_encode("Lorem ipsum dolor sir amet …");
     $img = new \OC_Image($text);
     $this->assertFalse($img->valid());
     $img = new \OC_Image(null);
     $this->assertFalse($img->valid());
 }

function handleGetAlbumThumbnail($token, $albumname)
{
    $owner = OC_Gallery_Sharing::getTokenOwner($token);
    $file = OCP\Config::getSystemValue("datadirectory") . '/' . $owner . '/gallery/' . $albumname . '.png';
    $image = new OC_Image($file);
    if ($image->valid()) {
        $image->centerCrop();
        $image->resize(200);
        $image->fixOrientation();
        OCP\Response::enableCaching(3600 * 24);
        // 24 hour
        $image->show();
    }
}

function handleGetAlbumThumbnail($token, $albumname)
{
    $owner = OC_Gallery_Sharing::getTokenOwner($token);
    $view = OCP\Files::getStorage('gallery');
    $file = $view->fopen($albumname . '.png', 'r');
    $image = new OC_Image($file);
    if ($image->valid()) {
        $image->centerCrop();
        $image->resize(200);
        $image->fixOrientation();
        OCP\Response::enableCaching(3600 * 24);
        // 24 hour
        $image->show();
    }
}

 public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview)
 {
     //get fileinfo
     $fileInfo = $fileview->getFileInfo($path);
     if (!$fileInfo) {
         return false;
     }
     $image = new \OC_Image();
     //check if file is encrypted
     if ($fileInfo['encrypted'] === true) {
         $image->loadFromData(stream_get_contents($fileview->fopen($path, 'r')));
     } else {
         $image->loadFromFile($fileview->getLocalFile($path));
     }
     return $image->valid() ? $image : false;
 }