From 09f1e4bdfbc7659cfb9f8db9b6c3278a66e08db7 Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Tue, 21 Nov 2017 15:10:23 -0800
Subject: pdf thumbnails

---
 Zotlabs/Thumbs/Pdf.php | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 include/attach.php     |  2 +-
 2 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 Zotlabs/Thumbs/Pdf.php

diff --git a/Zotlabs/Thumbs/Pdf.php b/Zotlabs/Thumbs/Pdf.php
new file mode 100644
index 000000000..5d413140f
--- /dev/null
+++ b/Zotlabs/Thumbs/Pdf.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Zotlabs\Thumbs;
+
+
+class Pdf {
+
+	function Match($type) {
+		return(($type === 'application/pdf') ? true : false );
+	}
+
+	function Thumb($attach,$preview_style,$height = 300, $width = 300) {
+
+		$photo = false;
+
+		$file = dbunescbin($attach['content']);
+		$tmpfile = $file . '.pdf';
+		$outfile = $file . '.jpg';
+
+		$istream = fopen($file,'rb');
+		$ostream = fopen($tmpfile,'wb');
+        if($istream && $ostream) {
+            pipe_streams($istream,$ostream);
+            fclose($istream);
+            fclose($ostream);
+		}
+
+		$imagick_path = get_config('system','imagick_convert_path');
+		if($imagick_path && @file_exists($imagick_path)) {
+			$cmd = $imagick_path . ' ' . escapeshellarg(PROJECT_BASE . '/' . $tmpfile . '[0]') . ' -thumbnail ' . $width . 'x' . $height . ' ' . escapeshellarg(PROJECT_BASE . '/' . $outfile);
+			//  logger('imagick thumbnail command: ' . $cmd);
+			for($x = 0; $x < 4; $x ++) {
+				exec($cmd);
+				if(! file_exists($outfile)) {
+					logger('imagick scale failed. Retrying.');
+					continue;
+				}
+			}
+			if(! file_exists($outfile)) {
+				logger('imagick scale failed.');
+			}
+			else {
+				@rename($outfile,$file . '.thumb');
+			}
+			@unlink($tmpfile);
+		}
+	}
+}
+
diff --git a/include/attach.php b/include/attach.php
index 0f31ed012..e3c40f68d 100644
--- a/include/attach.php
+++ b/include/attach.php
@@ -1632,7 +1632,7 @@ function find_filename_by_hash($channel_id, $attachHash) {
 }
 
 /**
- * @brief Pipes $in to $out in 16MB chunks.
+ * @brief Pipes $in to $out in 16KB chunks.
  *
  * @param resource $in File pointer of input
  * @param resource $out File pointer of output
-- 
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