1 files changed, 180 insertions, 0 deletions
diff --git a/lib/phpqrcode/qrbitstream.php b/lib/phpqrcode/qrbitstream.php
new file mode 100644
index 000000000..7d4ec4a6c
--- /dev/null
+++ b/lib/phpqrcode/qrbitstream.php
@@ -0,0 +1,180 @@
+<?php
+/*
+ * PHP QR Code encoder
+ *
+ * Bitstream class
+ *
+ * Based on libqrencode C library distributed under LGPL 2.1
+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <[email protected]>
+ *
+ * PHP QR Code is distributed under LGPL 3
+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+     
+    class QRbitstream {
+    
+        public $data = array();
+        
+        //----------------------------------------------------------------------
+        public function size()
+        {
+            return count($this->data);
+        }
+        
+        //----------------------------------------------------------------------
+        public function allocate($setLength)
+        {
+            $this->data = array_fill(0, $setLength, 0);
+            return 0;
+        }
+    
+        //----------------------------------------------------------------------
+        public static function newFromNum($bits, $num)
+        {
+            $bstream = new QRbitstream();
+            $bstream->allocate($bits);
+            
+            $mask = 1 << ($bits - 1);
+            for($i=0; $i<$bits; $i++) {
+                if($num & $mask) {
+                    $bstream->data[$i] = 1;
+                } else {
+                    $bstream->data[$i] = 0;
+                }
+                $mask = $mask >> 1;
+            }
+
+            return $bstream;
+        }
+        
+        //----------------------------------------------------------------------
+        public static function newFromBytes($size, $data)
+        {
+            $bstream = new QRbitstream();
+            $bstream->allocate($size * 8);
+            $p=0;
+
+            for($i=0; $i<$size; $i++) {
+                $mask = 0x80;
+                for($j=0; $j<8; $j++) {
+                    if($data[$i] & $mask) {
+                        $bstream->data[$p] = 1;
+                    } else {
+                        $bstream->data[$p] = 0;
+                    }
+                    $p++;
+                    $mask = $mask >> 1;
+                }
+            }
+
+            return $bstream;
+        }
+        
+        //----------------------------------------------------------------------
+        public function append(QRbitstream $arg)
+        {
+            if (is_null($arg)) {
+                return -1;
+            }
+            
+            if($arg->size() == 0) {
+                return 0;
+            }
+            
+            if($this->size() == 0) {
+                $this->data = $arg->data;
+                return 0;
+            }
+            
+            $this->data = array_values(array_merge($this->data, $arg->data));
+
+            return 0;
+        }
+        
+        //----------------------------------------------------------------------
+        public function appendNum($bits, $num)
+        {
+            if ($bits == 0) 
+                return 0;
+
+            $b = QRbitstream::newFromNum($bits, $num);
+            
+            if(is_null($b))
+                return -1;
+
+            $ret = $this->append($b);
+            unset($b);
+
+            return $ret;
+        }
+
+        //----------------------------------------------------------------------
+        public function appendBytes($size, $data)
+        {
+            if ($size == 0) 
+                return 0;
+
+            $b = QRbitstream::newFromBytes($size, $data);
+            
+            if(is_null($b))
+                return -1;
+
+            $ret = $this->append($b);
+            unset($b);
+
+            return $ret;
+        }
+        
+        //----------------------------------------------------------------------
+        public function toByte()
+        {
+        
+            $size = $this->size();
+
+            if($size == 0) {
+                return array();
+            }
+            
+            $data = array_fill(0, (int)(($size + 7) / 8), 0);
+            $bytes = (int)($size / 8);
+
+            $p = 0;
+            
+            for($i=0; $i<$bytes; $i++) {
+                $v = 0;
+                for($j=0; $j<8; $j++) {
+                    $v = $v << 1;
+                    $v |= $this->data[$p];
+                    $p++;
+                }
+                $data[$i] = $v;
+            }
+            
+            if($size & 7) {
+                $v = 0;
+                for($j=0; $j<($size & 7); $j++) {
+                    $v = $v << 1;
+                    $v |= $this->data[$p];
+                    $p++;
+                }
+                $data[$bytes] = $v;
+            }
+
+            return $data;
+        }
+
+    }