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/qrencode.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/qrencode.php')
| -rw-r--r-- | library/phpqrcode/qrencode.php | 502 |
1 files changed, 502 insertions, 0 deletions
diff --git a/library/phpqrcode/qrencode.php b/library/phpqrcode/qrencode.php new file mode 100644 index 000000000..4b77a5bdd --- /dev/null +++ b/library/phpqrcode/qrencode.php @@ -0,0 +1,502 @@ +<?php
+/*
+ * PHP QR Code encoder
+ *
+ * Main encoder classes.
+ *
+ * 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 QRrsblock {
+ public $dataLength;
+ public $data = array();
+ public $eccLength;
+ public $ecc = array();
+
+ public function __construct($dl, $data, $el, &$ecc, QRrsItem $rs)
+ {
+ $rs->encode_rs_char($data, $ecc);
+
+ $this->dataLength = $dl;
+ $this->data = $data;
+ $this->eccLength = $el;
+ $this->ecc = $ecc;
+ }
+ };
+
+ //##########################################################################
+
+ class QRrawcode {
+ public $version;
+ public $datacode = array();
+ public $ecccode = array();
+ public $blocks;
+ public $rsblocks = array(); //of RSblock
+ public $count;
+ public $dataLength;
+ public $eccLength;
+ public $b1;
+
+ //----------------------------------------------------------------------
+ public function __construct(QRinput $input)
+ {
+ $spec = array(0,0,0,0,0);
+
+ $this->datacode = $input->getByteStream();
+ if(is_null($this->datacode)) {
+ throw new Exception('null imput string');
+ }
+
+ QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);
+
+ $this->version = $input->getVersion();
+ $this->b1 = QRspec::rsBlockNum1($spec);
+ $this->dataLength = QRspec::rsDataLength($spec);
+ $this->eccLength = QRspec::rsEccLength($spec);
+ $this->ecccode = array_fill(0, $this->eccLength, 0);
+ $this->blocks = QRspec::rsBlockNum($spec);
+
+ $ret = $this->init($spec);
+ if($ret < 0) {
+ throw new Exception('block alloc error');
+ return null;
+ }
+
+ $this->count = 0;
+ }
+
+ //----------------------------------------------------------------------
+ public function init(array $spec)
+ {
+ $dl = QRspec::rsDataCodes1($spec);
+ $el = QRspec::rsEccCodes1($spec);
+ $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+
+
+ $blockNo = 0;
+ $dataPos = 0;
+ $eccPos = 0;
+ for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) {
+ $ecc = array_slice($this->ecccode,$eccPos);
+ $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
+ $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
+
+ $dataPos += $dl;
+ $eccPos += $el;
+ $blockNo++;
+ }
+
+ if(QRspec::rsBlockNum2($spec) == 0)
+ return 0;
+
+ $dl = QRspec::rsDataCodes2($spec);
+ $el = QRspec::rsEccCodes2($spec);
+ $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+
+ if($rs == NULL) return -1;
+
+ for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) {
+ $ecc = array_slice($this->ecccode,$eccPos);
+ $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
+ $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
+
+ $dataPos += $dl;
+ $eccPos += $el;
+ $blockNo++;
+ }
+
+ return 0;
+ }
+
+ //----------------------------------------------------------------------
+ public function getCode()
+ {
+ $ret;
+
+ if($this->count < $this->dataLength) {
+ $row = $this->count % $this->blocks;
+ $col = $this->count / $this->blocks;
+ if($col >= $this->rsblocks[0]->dataLength) {
+ $row += $this->b1;
+ }
+ $ret = $this->rsblocks[$row]->data[$col];
+ } else if($this->count < $this->dataLength + $this->eccLength) {
+ $row = ($this->count - $this->dataLength) % $this->blocks;
+ $col = ($this->count - $this->dataLength) / $this->blocks;
+ $ret = $this->rsblocks[$row]->ecc[$col];
+ } else {
+ return 0;
+ }
+ $this->count++;
+
+ return $ret;
+ }
+ }
+
+ //##########################################################################
+
+ class QRcode {
+
+ public $version;
+ public $width;
+ public $data;
+
+ //----------------------------------------------------------------------
+ public function encodeMask(QRinput $input, $mask)
+ {
+ if($input->getVersion() < 0 || $input->getVersion() > QRSPEC_VERSION_MAX) {
+ throw new Exception('wrong version');
+ }
+ if($input->getErrorCorrectionLevel() > QR_ECLEVEL_H) {
+ throw new Exception('wrong level');
+ }
+
+ $raw = new QRrawcode($input);
+
+ QRtools::markTime('after_raw');
+
+ $version = $raw->version;
+ $width = QRspec::getWidth($version);
+ $frame = QRspec::newFrame($version);
+
+ $filler = new FrameFiller($width, $frame);
+ if(is_null($filler)) {
+ return NULL;
+ }
+
+ // inteleaved data and ecc codes
+ for($i=0; $i<$raw->dataLength + $raw->eccLength; $i++) {
+ $code = $raw->getCode();
+ $bit = 0x80;
+ for($j=0; $j<8; $j++) {
+ $addr = $filler->next();
+ $filler->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
+ $bit = $bit >> 1;
+ }
+ }
+
+ QRtools::markTime('after_filler');
+
+ unset($raw);
+
+ // remainder bits
+ $j = QRspec::getRemainder($version);
+ for($i=0; $i<$j; $i++) {
+ $addr = $filler->next();
+ $filler->setFrameAt($addr, 0x02);
+ }
+
+ $frame = $filler->frame;
+ unset($filler);
+
+
+ // masking
+ $maskObj = new QRmask();
+ if($mask < 0) {
+
+ if (QR_FIND_BEST_MASK) {
+ $masked = $maskObj->mask($width, $frame, $input->getErrorCorrectionLevel());
+ } else {
+ $masked = $maskObj->makeMask($width, $frame, (intval(QR_DEFAULT_MASK) % 8), $input->getErrorCorrectionLevel());
+ }
+ } else {
+ $masked = $maskObj->makeMask($width, $frame, $mask, $input->getErrorCorrectionLevel());
+ }
+
+ if($masked == NULL) {
+ return NULL;
+ }
+
+ QRtools::markTime('after_mask');
+
+ $this->version = $version;
+ $this->width = $width;
+ $this->data = $masked;
+
+ return $this;
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeInput(QRinput $input)
+ {
+ return $this->encodeMask($input, -1);
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeString8bit($string, $version, $level)
+ {
+ if(string == NULL) {
+ throw new Exception('empty string!');
+ return NULL;
+ }
+
+ $input = new QRinput($version, $level);
+ if($input == NULL) return NULL;
+
+ $ret = $input->append($input, QR_MODE_8, strlen($string), str_split($string));
+ if($ret < 0) {
+ unset($input);
+ return NULL;
+ }
+ return $this->encodeInput($input);
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeString($string, $version, $level, $hint, $casesensitive)
+ {
+
+ if($hint != QR_MODE_8 && $hint != QR_MODE_KANJI) {
+ throw new Exception('bad hint');
+ return NULL;
+ }
+
+ $input = new QRinput($version, $level);
+ if($input == NULL) return NULL;
+
+ $ret = QRsplit::splitStringToQRinput($string, $input, $hint, $casesensitive);
+ if($ret < 0) {
+ return NULL;
+ }
+
+ return $this->encodeInput($input);
+ }
+
+ //----------------------------------------------------------------------
+ public static function png($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false)
+ {
+ $enc = QRencode::factory($level, $size, $margin);
+ return $enc->encodePNG($text, $outfile, $saveandprint=false);
+ }
+
+ //----------------------------------------------------------------------
+ public static function text($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4)
+ {
+ $enc = QRencode::factory($level, $size, $margin);
+ return $enc->encode($text, $outfile);
+ }
+
+ //----------------------------------------------------------------------
+ public static function raw($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4)
+ {
+ $enc = QRencode::factory($level, $size, $margin);
+ return $enc->encodeRAW($text, $outfile);
+ }
+ }
+
+ //##########################################################################
+
+ class FrameFiller {
+
+ public $width;
+ public $frame;
+ public $x;
+ public $y;
+ public $dir;
+ public $bit;
+
+ //----------------------------------------------------------------------
+ public function __construct($width, &$frame)
+ {
+ $this->width = $width;
+ $this->frame = $frame;
+ $this->x = $width - 1;
+ $this->y = $width - 1;
+ $this->dir = -1;
+ $this->bit = -1;
+ }
+
+ //----------------------------------------------------------------------
+ public function setFrameAt($at, $val)
+ {
+ $this->frame[$at['y']][$at['x']] = chr($val);
+ }
+
+ //----------------------------------------------------------------------
+ public function getFrameAt($at)
+ {
+ return ord($this->frame[$at['y']][$at['x']]);
+ }
+
+ //----------------------------------------------------------------------
+ public function next()
+ {
+ do {
+
+ if($this->bit == -1) {
+ $this->bit = 0;
+ return array('x'=>$this->x, 'y'=>$this->y);
+ }
+
+ $x = $this->x;
+ $y = $this->y;
+ $w = $this->width;
+
+ if($this->bit == 0) {
+ $x--;
+ $this->bit++;
+ } else {
+ $x++;
+ $y += $this->dir;
+ $this->bit--;
+ }
+
+ if($this->dir < 0) {
+ if($y < 0) {
+ $y = 0;
+ $x -= 2;
+ $this->dir = 1;
+ if($x == 6) {
+ $x--;
+ $y = 9;
+ }
+ }
+ } else {
+ if($y == $w) {
+ $y = $w - 1;
+ $x -= 2;
+ $this->dir = -1;
+ if($x == 6) {
+ $x--;
+ $y -= 8;
+ }
+ }
+ }
+ if($x < 0 || $y < 0) return null;
+
+ $this->x = $x;
+ $this->y = $y;
+
+ } while(ord($this->frame[$y][$x]) & 0x80);
+
+ return array('x'=>$x, 'y'=>$y);
+ }
+
+ } ;
+
+ //##########################################################################
+
+ class QRencode {
+
+ public $casesensitive = true;
+ public $eightbit = false;
+
+ public $version = 0;
+ public $size = 3;
+ public $margin = 4;
+
+ public $structured = 0; // not supported yet
+
+ public $level = QR_ECLEVEL_L;
+ public $hint = QR_MODE_8;
+
+ //----------------------------------------------------------------------
+ public static function factory($level = QR_ECLEVEL_L, $size = 3, $margin = 4)
+ {
+ $enc = new QRencode();
+ $enc->size = $size;
+ $enc->margin = $margin;
+
+ switch ($level.'') {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ $enc->level = $level;
+ break;
+ case 'l':
+ case 'L':
+ $enc->level = QR_ECLEVEL_L;
+ break;
+ case 'm':
+ case 'M':
+ $enc->level = QR_ECLEVEL_M;
+ break;
+ case 'q':
+ case 'Q':
+ $enc->level = QR_ECLEVEL_Q;
+ break;
+ case 'h':
+ case 'H':
+ $enc->level = QR_ECLEVEL_H;
+ break;
+ }
+
+ return $enc;
+ }
+
+ //----------------------------------------------------------------------
+ public function encodeRAW($intext, $outfile = false)
+ {
+ $code = new QRcode();
+
+ if($this->eightbit) {
+ $code->encodeString8bit($intext, $this->version, $this->level);
+ } else {
+ $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
+ }
+
+ return $code->data;
+ }
+
+ //----------------------------------------------------------------------
+ public function encode($intext, $outfile = false)
+ {
+ $code = new QRcode();
+
+ if($this->eightbit) {
+ $code->encodeString8bit($intext, $this->version, $this->level);
+ } else {
+ $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);
+ }
+
+ QRtools::markTime('after_encode');
+
+ if ($outfile!== false) {
+ file_put_contents($outfile, join("\n", QRtools::binarize($code->data)));
+ } else {
+ return QRtools::binarize($code->data);
+ }
+ }
+
+ //----------------------------------------------------------------------
+ public function encodePNG($intext, $outfile = false,$saveandprint=false)
+ {
+ try {
+
+ ob_start();
+ $tab = $this->encode($intext);
+ $err = ob_get_contents();
+ ob_end_clean();
+
+ if ($err != '')
+ QRtools::log($outfile, $err);
+
+ $maxSize = (int)(QR_PNG_MAXIMUM_SIZE / (count($tab)+2*$this->margin));
+
+ QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint);
+
+ } catch (Exception $e) {
+
+ QRtools::log($outfile, $e->getMessage());
+
+ }
+ }
+ }
|