first commit

2023-02-23 10:52:06 +01:00
commit 8bb9cee456
2426 changed files with 471082 additions and 0 deletions
--- a/prints3/filters/FilterASCII85.php
+++ b/prints3/filters/FilterASCII85.php
@ -0,0 +1,106 @@
+<?php
+/**
+ * This file is part of FPDI
+ *
+ * @package   FPDI
+ * @copyright Copyright (c) 2015 Setasign - Jan Slabon (http://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ * @version   1.6.1
+ */
+
+/**
+ * Class FilterASCII85
+ */
+class FilterASCII85
+{
+    /**
+     * Decode ASCII85 encoded string
+     *
+     * @param string $in
+     * @return string
+     * @throws Exception
+     */
+    public function decode($in)
+    {
+        $ord = array(
+            '~' => ord('~'),
+            'z' => ord('z'),
+            'u' => ord('u'),
+            '!' => ord('!')
+        );
+
+        $out = '';
+        $state = 0;
+        $chn = null;
+
+        $l = strlen($in);
+
+        for ($k = 0; $k < $l; ++$k) {
+            $ch = ord($in[$k]) & 0xff;
+
+            if ($ch == $ord['~']) {
+                break;
+            }
+            if (preg_match('/^\s$/',chr($ch))) {
+                continue;
+            }
+            if ($ch == $ord['z'] && $state == 0) {
+                $out .= chr(0) . chr(0) . chr(0) . chr(0);
+                continue;
+            }
+            if ($ch < $ord['!'] || $ch > $ord['u']) {
+                throw new Exception('Illegal character in ASCII85Decode.');
+            }
+
+            $chn[$state++] = $ch - $ord['!'];
+
+            if ($state == 5) {
+                $state = 0;
+                $r = 0;
+                for ($j = 0; $j < 5; ++$j) {
+                    $r = (int)($r * 85 + $chn[$j]);
+                }
+
+                $out .= chr($r >> 24);
+                $out .= chr($r >> 16);
+                $out .= chr($r >> 8);
+                $out .= chr($r);
+            }
+        }
+        $r = 0;
+
+        if ($state == 1) {
+            throw new Exception('Illegal length in ASCII85Decode.');
+        }
+
+        if ($state == 2) {
+            $r = $chn[0] * 85 * 85 * 85 * 85 + ($chn[1]+1) * 85 * 85 * 85;
+            $out .= chr($r >> 24);
+
+        } else if ($state == 3) {
+            $r = $chn[0] * 85 * 85 * 85 * 85 + $chn[1] * 85 * 85 * 85  + ($chn[2]+1) * 85 * 85;
+            $out .= chr($r >> 24);
+            $out .= chr($r >> 16);
+
+        } else if ($state == 4) {
+            $r = $chn[0] * 85 * 85 * 85 * 85 + $chn[1] * 85 * 85 * 85  + $chn[2] * 85 * 85  + ($chn[3]+1) * 85 ;
+            $out .= chr($r >> 24);
+            $out .= chr($r >> 16);
+            $out .= chr($r >> 8);
+        }
+
+        return $out;
+    }
+
+    /**
+     * NOT IMPLEMENTED
+     *
+     * @param string $in
+     * @return string
+     * @throws LogicException
+     */
+    public function encode($in)
+    {
+        throw new LogicException("ASCII85 encoding not implemented.");
+    }
+}