1 files changed, 92 insertions, 0 deletions
diff --git a/lib/private/Preview/TXT.php b/lib/private/Preview/TXT.php
new file mode 100644
index 00000000000..a27517c9f39
--- /dev/null
+++ b/lib/private/Preview/TXT.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * @author Georg Ehrke <georg@owncloud.com>
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Nmz <nemesiz@nmz.lt>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OC\Preview;
+
+class TXT extends Provider {
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getMimeType() {
+		return '/text\/plain/';
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public function isAvailable(\OCP\Files\FileInfo $file) {
+		return $file->getSize() > 0;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
+		$content = $fileview->fopen($path, 'r');
+		$content = stream_get_contents($content,3000);
+
+		//don't create previews of empty text files
+		if(trim($content) === '') {
+			return false;
+		}
+
+		$lines = preg_split("/\r\n|\n|\r/", $content);
+
+		$fontSize = ($maxX) ? (int) ((5 / 32) * $maxX) : 5; //5px
+		$lineSize = ceil($fontSize * 1.25);
+
+		$image = imagecreate($maxX, $maxY);
+		imagecolorallocate($image, 255, 255, 255);
+		$textColor = imagecolorallocate($image, 0, 0, 0);
+
+		$fontFile  = __DIR__;
+		$fontFile .= '/../../../core';
+		$fontFile .= '/fonts/OpenSans-Regular.ttf';
+
+		$canUseTTF = function_exists('imagettftext');
+
+		foreach($lines as $index => $line) {
+			$index = $index + 1;
+
+			$x = (int) 1;
+			$y = (int) ($index * $lineSize);
+
+			if ($canUseTTF === true) {
+				imagettftext($image, $fontSize, 0, $x, $y, $textColor, $fontFile, $line);
+			} else {
+				$y -= $fontSize;
+				imagestring($image, 1, $x, $y, $line, $textColor);
+			}
+
+			if(($index * $lineSize) >= $maxY) {
+				break;
+			}
+		}
+
+		$image = new \OC_Image($image);
+
+		return $image->valid() ? $image : false;
+	}
+}