File Content: BCGcode93.barcode.php <?php /** *-------------------------------------------------------------------- * * Sub-Class - Code 93 * * !! Warning !! * If you display the checksum on the barcode, you may obtain * some garbage since some characters are not displayable. * *-------------------------------------------------------------------- * Copyright (C) Jean-Sebastien Goupil * http://www.barcodephp.com */ include_once('BCGParseException.php'); include_once('BCGBarcode1D.php'); class BCGcode93 extends BCGBarcode1D { const EXTENDED_1 = 43; const EXTENDED_2 = 44; const EXTENDED_3 = 45; const EXTENDED_4 = 46; private $starting, $ending; private $indcheck, $data; /** * Constructor. */ public function __construct() { parent::__construct(); $this->starting = $this->ending = 47; /* * */ $this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%', '($)', '(%)', '(/)', '(+)', '(*)'); $this->code = array( '020001', /* 0 */ '000102', /* 1 */ '000201', /* 2 */ '000300', /* 3 */ '010002', /* 4 */ '010101', /* 5 */ '010200', /* 6 */ '000003', /* 7 */ '020100', /* 8 */ '030000', /* 9 */ '100002', /* A */ '100101', /* B */ '100200', /* C */ '110001', /* D */ '110100', /* E */ '120000', /* F */ '001002', /* G */ '001101', /* H */ '001200', /* I */ '011001', /* J */ '021000', /* K */ '000012', /* L */ '000111', /* M */ '000210', /* N */ '010011', /* O */ '020010', /* P */ '101001', /* Q */ '101100', /* R */ '100011', /* S */ '100110', /* T */ '110010', /* U */ '111000', /* V */ '001011', /* W */ '001110', /* X */ '011010', /* Y */ '012000', /* Z */ '010020', /* - */ '200001', /* . */ '200100', /* */ '210000', /* $ */ '001020', /* / */ '002010', /* + */ '100020', /* % */ '010110', /*($)*/ '201000', /*(%)*/ '200010', /*(/)*/ '011100', /*(+)*/ '000030' /*(*)*/ ); } /** * Parses the text before displaying it. * * @param mixed $text */ public function parse($text) { $this->text = $text; $data = array(); $indcheck = array(); $c = strlen($this->text); for ($i = 0; $i < $c; $i++) { $pos = array_search($this->text[$i], $this->keys); if ($pos === false) { // Search in extended? $extended = $this->getExtendedVersion($this->text[$i]); if ($extended === false) { throw new BCGParseException('code93', 'The character \'' . $this->text[$i] . '\' is not allowed.'); } else { $extc = strlen($extended); for ($j = 0; $j < $extc; $j++) { $v = $extended[$j]; if ($v === '$') { $indcheck[] = self::EXTENDED_1; $data[] = $this->code[self::EXTENDED_1]; } elseif ($v === '%') { $indcheck[] = self::EXTENDED_2; $data[] = $this->code[self::EXTENDED_2]; } elseif ($v === '/') { $indcheck[] = self::EXTENDED_3; $data[] = $this->code[self::EXTENDED_3]; } elseif ($v === '+') { $indcheck[] = self::EXTENDED_4; $data[] = $this->code[self::EXTENDED_4]; } else { $pos2 = array_search($v, $this->keys); $indcheck[] = $pos2; $data[] = $this->code[$pos2]; } } } } else { $indcheck[] = $pos; $data[] = $this->code[$pos]; } } $this->setData(array($indcheck, $data)); $this->addDefaultLabel(); } /** * Draws the barcode. * * @param resource $im */ public function draw($im) { // Starting * $this->drawChar($im, $this->code[$this->starting], true); $c = count($this->data); for ($i = 0; $i < $c; $i++) { $this->drawChar($im, $this->data[$i], true); } // Checksum $c = count($this->checksumValue); for ($i = 0; $i < $c; $i++) { $this->drawChar($im, $this->code[$this->checksumValue[$i]], true); } // Ending * $this->drawChar($im, $this->code[$this->ending], true); // Draw a Final Bar $this->drawChar($im, '0', true); $this->drawText($im, 0, 0, $this->positionX, $this->thickness); } /** * Returns the maximal size of a barcode. * * @param int $w * @param int $h * @return int[] */ public function getDimension($w, $h) { $startlength = 9; $textlength = 9 * count($this->data); $checksumlength = 2 * 9; $endlength = 9 + 1; // + final bar $w += $startlength + $textlength + $checksumlength + $endlength; $h += $this->thickness; return parent::getDimension($w, $h); } /** * Validates the input. */ protected function validate() { $c = count($this->data); if ($c === 0) { throw new BCGParseException('code93', 'No data has been entered.'); } parent::validate(); } /** * Overloaded method to calculate checksum. */ protected function calculateChecksum() { // Checksum // First CheckSUM "C" // The "C" checksum character is the modulo 47 remainder of the sum of the weighted // value of the data characters. The weighting value starts at "1" for the right-most // data character, 2 for the second to last, 3 for the third-to-last, and so on up to 20. // After 20, the sequence wraps around back to 1. // Second CheckSUM "K" // Same as CheckSUM "C" but we count the CheckSum "C" at the end // After 15, the sequence wraps around back to 1. $sequence_multiplier = array(20, 15); $this->checksumValue = array(); $indcheck = $this->indcheck; for ($z = 0; $z < 2; $z++) { $checksum = 0; for ($i = count($indcheck), $j = 0; $i > 0; $i--, $j++) { $multiplier = $i % $sequence_multiplier[$z]; if ($multiplier === 0) { $multiplier = $sequence_multiplier[$z]; } $checksum += $indcheck[$j] * $multiplier; } $this->checksumValue[$z] = $checksum % 47; $indcheck[] = $this->checksumValue[$z]; } } /** * Overloaded method to display the checksum. */ protected function processChecksum() { if ($this->checksumValue === false) { // Calculate the checksum only once $this->calculateChecksum(); } if ($this->checksumValue !== false) { $ret = ''; $c = count($this->checksumValue); for ($i = 0; $i < $c; $i++) { $ret .= $this->keys[$this->checksumValue[$i]]; } return $ret; } return false; } /** * Saves data into the classes. * * This method will save data, calculate real column number * (if -1 was selected), the real error level (if -1 was * selected)... It will add Padding to the end and generate * the error codes. * * @param array $data */ private function setData($data) { $this->indcheck = $data[0]; $this->data = $data[1]; $this->calculateChecksum(); } /** * Returns the extended reprensentation of the character. * * @param string $char * @return string */ private function getExtendedVersion($char) { $o = ord($char); if ($o === 0) { return '%U'; } elseif ($o >= 1 && $o <= 26) { return '$' . chr($o + 64); } elseif (($o >= 33 && $o <= 44) || $o === 47 || $o === 48) { return '/' . chr($o + 32); } elseif ($o >= 97 && $o <= 122) { return '+' . chr($o - 32); } elseif ($o >= 27 && $o <= 31) { return '%' . chr($o + 38); } elseif ($o >= 59 && $o <= 63) { return '%' . chr($o + 11); } elseif ($o >= 91 && $o <= 95) { return '%' . chr($o - 16); } elseif ($o >= 123 && $o <= 127) { return '%' . chr($o - 43); } elseif ($o === 64) { return '%V'; } elseif ($o === 96) { return '%W'; } elseif ($o > 127) { return false; } else { return $char; } } } ?> Submit