qrcode.chapril.org-libreqr/barcode-generator/Generator/CINcode39.php
2021-11-01 18:08:42 +01:00

195 lines
5.9 KiB
PHP

<?php
/**
*--------------------------------------------------------------------
*
* Sub-Class - Code 39
*
*--------------------------------------------------------------------
* @author Akhtar Khan <er.akhtarkhan@gmail.com>
* @link http://www.codeitnow.in
* @package https://github.com/codeitnowin/barcode-generator
*/
namespace CodeItNow\BarcodeBundle\Generator;
use CodeItNow\BarcodeBundle\Generator\CINParseException;
use CodeItNow\BarcodeBundle\Generator\CINBarcode1D;
class CINcode39 extends CINBarcode1D {
protected $starting, $ending;
protected $checksum;
/**
* Constructor.
*/
public function __construct() {
parent::__construct();
$this->starting = $this->ending = 43;
$this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%', '*');
$this->code = array( // 0 added to add an extra space
'0001101000', /* 0 */
'1001000010', /* 1 */
'0011000010', /* 2 */
'1011000000', /* 3 */
'0001100010', /* 4 */
'1001100000', /* 5 */
'0011100000', /* 6 */
'0001001010', /* 7 */
'1001001000', /* 8 */
'0011001000', /* 9 */
'1000010010', /* A */
'0010010010', /* B */
'1010010000', /* C */
'0000110010', /* D */
'1000110000', /* E */
'0010110000', /* F */
'0000011010', /* G */
'1000011000', /* H */
'0010011000', /* I */
'0000111000', /* J */
'1000000110', /* K */
'0010000110', /* L */
'1010000100', /* M */
'0000100110', /* N */
'1000100100', /* O */
'0010100100', /* P */
'0000001110', /* Q */
'1000001100', /* R */
'0010001100', /* S */
'0000101100', /* T */
'1100000010', /* U */
'0110000010', /* V */
'1110000000', /* W */
'0100100010', /* X */
'1100100000', /* Y */
'0110100000', /* Z */
'0100001010', /* - */
'1100001000', /* . */
'0110001000', /* */
'0101010000', /* $ */
'0101000100', /* / */
'0100010100', /* + */
'0001010100', /* % */
'0100101000' /* * */
);
$this->setChecksum(false);
}
/**
* Sets if we display the checksum.
*
* @param bool $checksum
*/
public function setChecksum($checksum) {
$this->checksum = (bool)$checksum;
}
/**
* Parses the text before displaying it.
*
* @param mixed $text
*/
public function parse($text) {
parent::parse(strtoupper($text)); // Only Capital Letters are Allowed
}
/**
* Draws the barcode.
*
* @param resource $im
*/
public function draw($im) {
// Starting *
$this->drawChar($im, $this->code[$this->starting], true);
// Chars
$c = strlen($this->text);
for ($i = 0; $i < $c; $i++) {
$this->drawChar($im, $this->findCode($this->text[$i]), true);
}
// Checksum (rarely used)
if ($this->checksum === true) {
$this->calculateChecksum();
$this->drawChar($im, $this->code[$this->checksumValue % 43], true);
}
// Ending *
$this->drawChar($im, $this->code[$this->ending], 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) {
$textlength = 13 * strlen($this->text);
$startlength = 13;
$checksumlength = 0;
if ($this->checksum === true) {
$checksumlength = 13;
}
$endlength = 13;
$w += $startlength + $textlength + $checksumlength + $endlength;
$h += $this->thickness;
return parent::getDimension($w, $h);
}
/**
* Validates the input.
*/
protected function validate() {
$c = strlen($this->text);
if ($c === 0) {
throw new CINParseException('code39', 'No data has been entered.');
}
// Checking if all chars are allowed
for ($i = 0; $i < $c; $i++) {
if (array_search($this->text[$i], $this->keys) === false) {
throw new CINParseException('code39', 'The character \'' . $this->text[$i] . '\' is not allowed.');
}
}
if (strpos($this->text, '*') !== false) {
throw new CINParseException('code39', 'The character \'*\' is not allowed.');
}
parent::validate();
}
/**
* Overloaded method to calculate checksum.
*/
protected function calculateChecksum() {
$this->checksumValue = 0;
$c = strlen($this->text);
for ($i = 0; $i < $c; $i++) {
$this->checksumValue += $this->findIndex($this->text[$i]);
}
$this->checksumValue = $this->checksumValue % 43;
}
/**
* Overloaded method to display the checksum.
*/
protected function processChecksum() {
if ($this->checksumValue === false) { // Calculate the checksum only once
$this->calculateChecksum();
}
if ($this->checksumValue !== false) {
return $this->keys[$this->checksumValue];
}
return false;
}
}
?>