diff options
| author | friendica <info@friendica.com> | 2014-01-07 20:36:16 -0800 |
|---|---|---|
| committer | friendica <info@friendica.com> | 2014-01-07 20:36:16 -0800 |
| commit | 8b93881ce7ab4e0a8b0c8426da1ddfeed19c2309 (patch) | |
| tree | 52d4b15d798933c068a8eb12374ac192db8fbb42 /library/phpqrcode/qrbitstream.php | |
| parent | 401183780540812929e35a59348b7f2e347d4b8f (diff) | |
| download | volse-hubzilla-8b93881ce7ab4e0a8b0c8426da1ddfeed19c2309.tar.gz volse-hubzilla-8b93881ce7ab4e0a8b0c8426da1ddfeed19c2309.tar.bz2 volse-hubzilla-8b93881ce7ab4e0a8b0c8426da1ddfeed19c2309.zip | |
qr code support
Diffstat (limited to 'library/phpqrcode/qrbitstream.php')
| -rw-r--r-- | library/phpqrcode/qrbitstream.php | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/library/phpqrcode/qrbitstream.php b/library/phpqrcode/qrbitstream.php new file mode 100644 index 000000000..7d4ec4a6c --- /dev/null +++ b/library/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 <fukuchi@megaui.net>
+ *
+ * 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;
+ }
+
+ }
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