查看文件: qrencode.php
大小: 19.6 KB
类型: application/octet-stream
<?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() { $ret = NULL; if($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, $back_color = 0xFFFFFF, $fore_color = 0x000000) { $enc = QRencode::factory($level, $size, $margin, $back_color, $fore_color); 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, $outfile); } //---------------------------------------------------------------------- public static function eps($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false, $back_color = 0xFFFFFF, $fore_color = 0x000000, $cmyk = false) { $enc = QRencode::factory($level, $size, $margin, $back_color, $fore_color, $cmyk); return $enc->encodeEPS($text, $outfile, $saveandprint=false); } //---------------------------------------------------------------------- public static function svg($text, $outfile = false, $level = QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false, $back_color = 0xFFFFFF, $fore_color = 0x000000) { $enc = QRencode::factory($level, $size, $margin, $back_color, $fore_color); return $enc->encodeSVG($text, $outfile, $saveandprint=false); } //---------------------------------------------------------------------- public static function raw($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 $back_color = 0xFFFFFF; public $fore_color = 0x000000; 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, $back_color = 0xFFFFFF, $fore_color = 0x000000, $cmyk = false) { $enc = new QRencode(); $enc->size = $size; $enc->margin = $margin; $enc->fore_color = $fore_color; $enc->back_color = $back_color; $enc->cmyk = $cmyk; switch ($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, $this->back_color, $this->fore_color); } catch (Exception $e) { QRtools::log($outfile, $e->getMessage()); } } //---------------------------------------------------------------------- public function encodeEPS($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*$this->margin)); QRvect::eps($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint, $this->back_color, $this->fore_color, $this->cmyk); } catch (Exception $e) { QRtools::log($outfile, $e->getMessage()); } } //---------------------------------------------------------------------- public function encodeSVG($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*$this->margin)); QRvect::svg($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint, $this->back_color, $this->fore_color); } catch (Exception $e) { QRtools::log($outfile, $e->getMessage()); } } }
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