CasperSecurity
<?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;
}
}
}
?>