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Merge pull request #12483 from owncloud/issue/6101-preview-providers 

Issue/6101 Autoload preview providers
This commit is contained in:
Lukas Reschke 2014-11-28 13:43:41 +01:00
parent 7c96cedd25 ec7b55f5be
commit b3afc98f82
21 changed files with 488 additions and 421 deletions
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78
lib/private/preview.php
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@ -16,14 +16,6 @@ namespace OC;
use OC\Preview\Provider;
use OCP\Files\NotFoundException;
require_once 'preview/image.php';
require_once 'preview/movie.php';
require_once 'preview/mp3.php';
require_once 'preview/svg.php';
require_once 'preview/txt.php';
require_once 'preview/office.php';
require_once 'preview/bitmap.php';
class Preview {
//the thumbnail folder
const THUMBNAILS_FOLDER = 'thumbnails';
@ -744,10 +736,11 @@ class Preview {
return;
}
if (count(self::$providers) > 0) {
if (!empty(self::$providers)) {
return;
}
self::registerCoreProviders();
foreach (self::$registeredProviders as $provider) {
$class = $provider['class'];
$options = $provider['options'];
@ -759,7 +752,74 @@ class Preview {
$keys = array_map('strlen', array_keys(self::$providers));
array_multisort($keys, SORT_DESC, self::$providers);
}
protected static function registerCoreProviders() {
self::registerProvider('OC\Preview\TXT');
self::registerProvider('OC\Preview\MarkDown');
self::registerProvider('OC\Preview\Image');
self::registerProvider('OC\Preview\MP3');
// SVG, Office and Bitmap require imagick
if (extension_loaded('imagick')) {
$checkImagick = new \Imagick();
$imagickProviders = array(
'SVG' => 'OC\Preview\SVG',
'TIFF' => 'OC\Preview\TIFF',
'PDF' => 'OC\Preview\PDF',
'AI' => 'OC\Preview\Illustrator',
'PSD' => 'OC\Preview\Photoshop',
// Requires adding 'eps' => array('application/postscript', null), to lib/private/mimetypes.list.php
'EPS' => 'OC\Preview\Postscript',
);
foreach ($imagickProviders as $queryFormat => $provider) {
if (count($checkImagick->queryFormats($queryFormat)) === 1) {
self::registerProvider($provider);
}
}
if (count($checkImagick->queryFormats('PDF')) === 1) {
// Office previews are currently not supported on Windows
if (!\OC_Util::runningOnWindows() && \OC_Helper::is_function_enabled('shell_exec')) {
$officeFound = is_string(\OC::$server->getConfig()->getSystemValue('preview_libreoffice_path', null));
if (!$officeFound) {
//let's see if there is libreoffice or openoffice on this machine
$whichLibreOffice = shell_exec('command -v libreoffice');
$officeFound = !empty($whichLibreOffice);
if (!$officeFound) {
$whichOpenOffice = shell_exec('command -v openoffice');
$officeFound = !empty($whichOpenOffice);
}
}
if ($officeFound) {
self::registerProvider('OC\Preview\MSOfficeDoc');
self::registerProvider('OC\Preview\MSOffice2003');
self::registerProvider('OC\Preview\MSOffice2007');
self::registerProvider('OC\Preview\OpenDocument');
self::registerProvider('OC\Preview\StarOffice');
}
}
}
}
// Video requires avconv or ffmpeg and is therefor
// currently not supported on Windows.
if (!\OC_Util::runningOnWindows()) {
$avconvBinary = \OC_Helper::findBinaryPath('avconv');
$ffmpegBinary = ($avconvBinary) ? null : \OC_Helper::findBinaryPath('ffmpeg');
if ($avconvBinary || $ffmpegBinary) {
// FIXME // a bit hacky but didn't want to use subclasses
\OC\Preview\Movie::$avconvBinary = $avconvBinary;
\OC\Preview\Movie::$ffmpegBinary = $ffmpegBinary;
self::registerProvider('OC\Preview\Movie');
}
}
}
/**

122
lib/private/preview/bitmap.php
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@ -5,113 +5,33 @@
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
use Imagick;
abstract class Bitmap extends Provider {
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$tmpPath = $fileview->toTmpFile($path);
if (extension_loaded('imagick')) {
//create imagick object from bitmap or vector file
try {
// Layer 0 contains either the bitmap or
// a flat representation of all vector layers
$bp = new \Imagick($tmpPath . '[0]');
$checkImagick = new Imagick();
class Bitmap extends Provider {
public function getMimeType() {
return null;
$bp->setImageFormat('png');
} catch (\Exception $e) {
\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
return false;
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$tmpPath = $fileview->toTmpFile($path);
unlink($tmpPath);
//create imagick object from bitmap or vector file
try{
// Layer 0 contains either the bitmap or
// a flat representation of all vector layers
$bp = new Imagick($tmpPath . '[0]');
$bp->setImageFormat('png');
} catch (\Exception $e) {
\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
return false;
}
unlink($tmpPath);
//new bitmap image object
$image = new \OC_Image($bp);
//check if image object is valid
return $image->valid() ? $image : false;
}
}
if(count($checkImagick->queryFormats('PDF')) === 1) {
//.pdf
class PDF extends Bitmap {
public function getMimeType() {
return '/application\/pdf/';
}
}
\OC\Preview::registerProvider('OC\Preview\PDF');
}
if(count($checkImagick->queryFormats('TIFF')) === 1) {
//.tiff
class TIFF extends Bitmap {
public function getMimeType() {
return '/image\/tiff/';
}
}
\OC\Preview::registerProvider('OC\Preview\TIFF');
}
if(count($checkImagick->queryFormats('AI')) === 1) {
//.ai
class Illustrator extends Bitmap {
public function getMimeType() {
return '/application\/illustrator/';
}
}
\OC\Preview::registerProvider('OC\Preview\Illustrator');
}
// Requires adding 'eps' => array('application/postscript', null), to lib/private/mimetypes.list.php
if(count($checkImagick->queryFormats('EPS')) === 1) {
//.eps
class Postscript extends Bitmap {
public function getMimeType() {
return '/application\/postscript/';
}
}
\OC\Preview::registerProvider('OC\Preview\Postscript');
}
if(count($checkImagick->queryFormats('PSD')) === 1) {
//.psd
class Photoshop extends Bitmap {
public function getMimeType() {
return '/application\/x-photoshop/';
}
}
\OC\Preview::registerProvider('OC\Preview\Photoshop');
//new bitmap image object
$image = new \OC_Image($bp);
//check if image object is valid
return $image->valid() ? $image : false;
}
}

19
lib/private/preview/illustrator.php Normal file
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@ -0,0 +1,19 @@
<?php
/**
* Copyright (c) 2013-2014 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.ai
class Illustrator extends Bitmap {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/illustrator/';
}
}

9
lib/private/preview/image.php
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@ -9,11 +9,16 @@
namespace OC\Preview;
class Image extends Provider {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/image\/(?!tiff$)(?!svg.*).*/';
}
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
//get fileinfo
$fileInfo = $fileview->getFileInfo($path);
@ -35,5 +40,3 @@ class Image extends Provider {
}
}
\OC\Preview::registerProvider('OC\Preview\Image');

18
lib/private/preview/markdown.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
class MarkDown extends TXT {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/text\/(x-)?markdown/';
}
}

154
lib/private/preview/movie.php
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@ -8,99 +8,87 @@
*/
namespace OC\Preview;
// movie preview is currently not supported on Windows
if (!\OC_Util::runningOnWindows()) {
$avconvBinary = \OC_Helper::findBinaryPath('avconv');
$ffmpegBinary = ($avconvBinary) ? null : \OC_Helper::findBinaryPath('ffmpeg');
class Movie extends Provider {
public static $avconvBinary;
public static $ffmpegBinary;
if ($avconvBinary || $ffmpegBinary) {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/video\/.*/';
}
class Movie extends Provider {
public static $avconvBinary;
public static $ffmpegBinary;
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
// TODO: use proc_open() and stream the source file ?
public function getMimeType() {
return '/video\/.*/';
}
$fileInfo = $fileview->getFileInfo($path);
$useFileDirectly = (!$fileInfo->isEncrypted() && !$fileInfo->isMounted());
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
// TODO: use proc_open() and stream the source file ?
if ($useFileDirectly) {
$absPath = $fileview->getLocalFile($path);
} else {
$absPath = \OC_Helper::tmpFile();
$fileInfo = $fileview->getFileInfo($path);
$useFileDirectly = (!$fileInfo->isEncrypted() && !$fileInfo->isMounted());
$handle = $fileview->fopen($path, 'rb');
if ($useFileDirectly) {
$absPath = $fileview->getLocalFile($path);
} else {
$absPath = \OC_Helper::tmpFile();
// 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);
}
$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);
}
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
}
}
if (!$useFileDirectly) {
unlink($absPath);
}
return $result;
}
/**
* @param int $maxX
* @param int $maxY
* @param string $absPath
* @param string $tmpPath
* @param int $second
* @return bool|\OC_Image
*/
private function generateThumbNail($maxX, $maxY, $absPath, $second)
{
$tmpPath = \OC_Helper::tmpFile();
if (self::$avconvBinary) {
$cmd = self::$avconvBinary . ' -an -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
} else {
$cmd = self::$ffmpegBinary . ' -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -f mjpeg -vframes 1' .
' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) .
' ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
}
exec($cmd, $output, $returnCode);
if ($returnCode === 0) {
$image = new \OC_Image();
$image->loadFromFile($tmpPath);
unlink($tmpPath);
return $image->valid() ? $image : false;
}
unlink($tmpPath);
return false;
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
}
}
// a bit hacky but didn't want to use subclasses
Movie::$avconvBinary = $avconvBinary;
Movie::$ffmpegBinary = $ffmpegBinary;
if (!$useFileDirectly) {
unlink($absPath);
}
\OC\Preview::registerProvider('OC\Preview\Movie');
return $result;
}
/**
* @param int $maxX
* @param int $maxY
* @param string $absPath
* @param int $second
* @return bool|\OC_Image
*/
private function generateThumbNail($maxX, $maxY, $absPath, $second) {
$tmpPath = \OC_Helper::tmpFile();
if (self::$avconvBinary) {
$cmd = self::$avconvBinary . ' -an -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
} else {
$cmd = self::$ffmpegBinary . ' -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -f mjpeg -vframes 1' .
' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) .
' ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
}
exec($cmd, $output, $returnCode);
if ($returnCode === 0) {
$image = new \OC_Image();
$image->loadFromFile($tmpPath);
unlink($tmpPath);
return $image->valid() ? $image : false;
}
unlink($tmpPath);
return false;
}
}

15
lib/private/preview/mp3.php
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@ -8,11 +8,16 @@
namespace OC\Preview;
class MP3 extends Provider {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/audio\/mpeg/';
}
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$getID3 = new \getID3();
@ -31,6 +36,12 @@ class MP3 extends Provider {
return $this->getNoCoverThumbnail();
}
/**
* Generates a default image when the file has no cover
*
* @return false|\OC_Image False if the default image is missing or invalid,
* otherwise the image is returned as \OC_Image
*/
private function getNoCoverThumbnail() {
$icon = \OC::$SERVERROOT . '/core/img/filetypes/audio.png';
@ -44,5 +55,3 @@ class MP3 extends Provider {
}
}
\OC\Preview::registerProvider('OC\Preview\MP3');

18
lib/private/preview/msoffice2003.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.docm, .dotm, .xls(m), .xlt(m), .xla(m), .ppt(m), .pot(m), .pps(m), .ppa(m)
class MSOffice2003 extends Office {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/vnd.ms-.*/';
}
}

18
lib/private/preview/msoffice2007.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.docx, .dotx, .xlsx, .xltx, .pptx, .potx, .ppsx
class MSOffice2007 extends Office {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/vnd.openxmlformats-officedocument.*/';
}
}

18
lib/private/preview/msofficedoc.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.doc, .dot
class MSOfficeDoc extends Office {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/msword/';
}
}

138
lib/private/preview/office-cl.php
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@ -1,138 +0,0 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
// office preview is currently not supported on Windows
if (!\OC_Util::runningOnWindows()) {
//we need imagick to convert
class Office extends Provider {
private $cmd;
public function getMimeType() {
return null;
}
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$this->initCmd();
if(is_null($this->cmd)) {
return false;
}
$absPath = $fileview->toTmpFile($path);
$tmpDir = get_temp_dir();
$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($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
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;
}
private function initCmd() {
$cmd = '';
if(is_string(\OC_Config::getValue('preview_libreoffice_path', null))) {
$cmd = \OC_Config::getValue('preview_libreoffice_path', null);
}
$whichLibreOffice = shell_exec('command -v libreoffice');
if($cmd === '' && !empty($whichLibreOffice)) {
$cmd = 'libreoffice';
}
$whichOpenOffice = shell_exec('command -v openoffice');
if($cmd === '' && !empty($whichOpenOffice)) {
$cmd = 'openoffice';
}
if($cmd === '') {
$cmd = null;
}
$this->cmd = $cmd;
}
}
//.doc, .dot
class MSOfficeDoc extends Office {
public function getMimeType() {
return '/application\/msword/';
}
}
\OC\Preview::registerProvider('OC\Preview\MSOfficeDoc');
//.docm, .dotm, .xls(m), .xlt(m), .xla(m), .ppt(m), .pot(m), .pps(m), .ppa(m)
class MSOffice2003 extends Office {
public function getMimeType() {
return '/application\/vnd.ms-.*/';
}
}
\OC\Preview::registerProvider('OC\Preview\MSOffice2003');
//.docx, .dotx, .xlsx, .xltx, .pptx, .potx, .ppsx
class MSOffice2007 extends Office {
public function getMimeType() {
return '/application\/vnd.openxmlformats-officedocument.*/';
}
}
\OC\Preview::registerProvider('OC\Preview\MSOffice2007');
//.odt, .ott, .oth, .odm, .odg, .otg, .odp, .otp, .ods, .ots, .odc, .odf, .odb, .odi, .oxt
class OpenDocument extends Office {
public function getMimeType() {
return '/application\/vnd.oasis.opendocument.*/';
}
}
\OC\Preview::registerProvider('OC\Preview\OpenDocument');
//.sxw, .stw, .sxc, .stc, .sxd, .std, .sxi, .sti, .sxg, .sxm
class StarOffice extends Office {
public function getMimeType() {
return '/application\/vnd.sun.xml.*/';
}
}
\OC\Preview::registerProvider('OC\Preview\StarOffice');
}

80
lib/private/preview/office.php
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@ -5,24 +5,72 @@
* later.
* See the COPYING-README file.
*/
//both, libreoffice backend and php fallback, need imagick
if (extension_loaded('imagick')) {
namespace OC\Preview;
$checkImagick = new Imagick();
abstract class Office extends Provider {
private $cmd;
if(count($checkImagick->queryFormats('PDF')) === 1) {
$isShellExecEnabled = \OC_Helper::is_function_enabled('shell_exec');
// LibreOffice preview is currently not supported on Windows
if (!\OC_Util::runningOnWindows()) {
$whichLibreOffice = ($isShellExecEnabled ? shell_exec('command -v libreoffice') : '');
$isLibreOfficeAvailable = !empty($whichLibreOffice);
$whichOpenOffice = ($isShellExecEnabled ? shell_exec('command -v openoffice') : '');
$isOpenOfficeAvailable = !empty($whichOpenOffice);
//let's see if there is libreoffice or openoffice on this machine
if($isShellExecEnabled && ($isLibreOfficeAvailable || $isOpenOfficeAvailable || is_string(\OC_Config::getValue('preview_libreoffice_path', null)))) {
require_once('office-cl.php');
}
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$this->initCmd();
if(is_null($this->cmd)) {
return false;
}
$absPath = $fileview->toTmpFile($path);
$tmpDir = get_temp_dir();
$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($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
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;
}
private function initCmd() {
$cmd = '';
if(is_string(\OC_Config::getValue('preview_libreoffice_path', null))) {
$cmd = \OC_Config::getValue('preview_libreoffice_path', null);
}
$whichLibreOffice = shell_exec('command -v libreoffice');
if($cmd === '' && !empty($whichLibreOffice)) {
$cmd = 'libreoffice';
}
$whichOpenOffice = shell_exec('command -v openoffice');
if($cmd === '' && !empty($whichOpenOffice)) {
$cmd = 'openoffice';
}
if($cmd === '') {
$cmd = null;
}
$this->cmd = $cmd;
}
}

18
lib/private/preview/opendocument.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.odt, .ott, .oth, .odm, .odg, .otg, .odp, .otp, .ods, .ots, .odc, .odf, .odb, .odi, .oxt
class OpenDocument extends Office {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/vnd.oasis.opendocument.*/';
}
}

19
lib/private/preview/pdf.php Normal file
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@ -0,0 +1,19 @@
<?php
/**
* Copyright (c) 2013-2014 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.pdf
class PDF extends Bitmap {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/pdf/';
}
}

19
lib/private/preview/photoshop.php Normal file
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@ -0,0 +1,19 @@
<?php
/**
* Copyright (c) 2013-2014 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.psd
class Photoshop extends Bitmap {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/x-photoshop/';
}
}

19
lib/private/preview/postscript.php Normal file
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@ -0,0 +1,19 @@
<?php
/**
* Copyright (c) 2013-2014 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.eps
class Postscript extends Bitmap {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/postscript/';
}
}

12
lib/private/preview/provider.php
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@ -5,18 +5,21 @@ abstract class Provider {
private $options;
public function __construct($options) {
$this->options=$options;
$this->options = $options;
}
/**
* @return string Regex with the mimetypes that are supported by this provider
*/
abstract public function getMimeType();
/**
* Check if a preview can be generated for $path
*
* @param string $path
* @param \OC\Files\FileInfo $file
* @return bool
*/
public function isAvailable($path) {
public function isAvailable($file) {
return true;
}
@ -26,11 +29,10 @@ abstract class Provider {
* @param int $maxX The maximum X size of the thumbnail. It can be smaller depending on the shape of the image
* @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
* @param bool $scalingup Disable/Enable upscaling of previews
* @param object $fileview fileview object of user folder
* @param \OC\Files\View $fileview fileview object of user folder
* @return mixed
* false if no preview was generated
* OC_Image object of the preview
*/
abstract public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview);
}

18
lib/private/preview/staroffice.php Normal file
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@ -0,0 +1,18 @@
<?php
/**
* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.sxw, .stw, .sxc, .stc, .sxd, .std, .sxi, .sti, .sxg, .sxm
class StarOffice extends Office {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/application\/vnd.sun.xml.*/';
}
}

69
lib/private/preview/svg.php
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@ -7,52 +7,43 @@
*/
namespace OC\Preview;
use Imagick;
class SVG extends Provider {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/image\/svg\+xml/';
}
if (extension_loaded('imagick')) {
/**
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
try{
$svg = new \Imagick();
$svg->setBackgroundColor(new \ImagickPixel('transparent'));
$checkImagick = new Imagick();
if(count($checkImagick->queryFormats('SVG')) === 1) {
class SVG extends Provider {
public function getMimeType() {
return '/image\/svg\+xml/';
$content = stream_get_contents($fileview->fopen($path, 'r'));
if(substr($content, 0, 5) !== '<?xml') {
$content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
}
public function getThumbnail($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() ? $image : false;
// Do not parse SVG files with references
if(stripos($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;
}
\OC\Preview::registerProvider('OC\Preview\SVG');
//new image object
$image = new \OC_Image();
$image->loadFromData($svg);
//check if image object is valid
return $image->valid() ? $image : false;
}
}

19
lib/private/preview/tiff.php Normal file
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@ -0,0 +1,19 @@
<?php
/**
* Copyright (c) 2013-2014 Georg Ehrke georg@ownCloud.com
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Preview;
//.tiff
class TIFF extends Bitmap {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/image\/tiff/';
}
}

29
lib/private/preview/txt.php
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@ -8,31 +8,24 @@
namespace OC\Preview;
class TXT extends Provider {
/**
* {@inheritDoc}
*/
public function getMimeType() {
return '/text\/plain/';
}
/**
* Check if a preview can be generated for $path
*
* @param \OC\Files\FileInfo $file
* @return bool
* {@inheritDoc}
*/
public function isAvailable($file) {
return $file->getSize() > 5;
}
/**
* @param string $path
* @param int $maxX
* @param int $maxY
* @param boolean $scalingup
* @param \OC\Files\View $fileview
* @return bool|\OC_Image
* {@inheritDoc}
*/
public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
$content = $fileview->fopen($path, 'r');
$content = stream_get_contents($content,3000);
@ -79,15 +72,3 @@ class TXT extends Provider {
return $image->valid() ? $image : false;
}
}
\OC\Preview::registerProvider('OC\Preview\TXT');
class MarkDown extends TXT {
public function getMimeType() {
return '/text\/(x-)?markdown/';
}
}
\OC\Preview::registerProvider('OC\Preview\MarkDown');