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- <?php
-
- include_once('BCGParseException.php');
- include_once('BCGBarcode1D.php');
-
- class BCGcode39 extends BCGBarcode1D {
- protected $starting, $ending;
- protected $checksum;
-
-
-
- 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(
- '0001101000',
- '1001000010',
- '0011000010',
- '1011000000',
- '0001100010',
- '1001100000',
- '0011100000',
- '0001001010',
- '1001001000',
- '0011001000',
- '1000010010',
- '0010010010',
- '1010010000',
- '0000110010',
- '1000110000',
- '0010110000',
- '0000011010',
- '1000011000',
- '0010011000',
- '0000111000',
- '1000000110',
- '0010000110',
- '1010000100',
- '0000100110',
- '1000100100',
- '0010100100',
- '0000001110',
- '1000001100',
- '0010001100',
- '0000101100',
- '1100000010',
- '0110000010',
- '1110000000',
- '0100100010',
- '1100100000',
- '0110100000',
- '0100001010',
- '1100001000',
- '0110001000',
- '0101010000',
- '0101000100',
- '0100010100',
- '0001010100',
- '0100101000'
- );
-
- $this->setChecksum(false);
- }
-
-
-
- public function setChecksum($checksum) {
- $this->checksum = (bool)$checksum;
- }
-
-
-
- public function parse($text) {
- parent::parse(strtoupper($text));
- }
-
-
-
- public function draw($im) {
-
- $this->drawChar($im, $this->code[$this->starting], true);
-
-
- $c = strlen($this->text);
- for ($i = 0; $i < $c; $i++) {
- $this->drawChar($im, $this->findCode($this->text[$i]), true);
- }
-
-
- if ($this->checksum === true) {
- $this->calculateChecksum();
- $this->drawChar($im, $this->code[$this->checksumValue % 43], true);
- }
-
-
- $this->drawChar($im, $this->code[$this->ending], true);
- $this->drawText($im, 0, 0, $this->positionX, $this->thickness);
- }
-
-
-
- public function getDimension($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);
- }
-
-
-
- protected function validate() {
- $c = strlen($this->text);
- if ($c === 0) {
- throw new BCGParseException('code39', 'No data has been entered.');
- }
-
-
- for ($i = 0; $i < $c; $i++) {
- if (array_search($this->text[$i], $this->keys) === false) {
- throw new BCGParseException('code39', 'The character \'' . $this->text[$i] . '\' is not allowed.');
- }
- }
-
- if (strpos($this->text, '*') !== false) {
- throw new BCGParseException('code39', 'The character \'*\' is not allowed.');
- }
-
- parent::validate();
- }
-
-
-
- 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 = $this->checksumValue % 43;
- }
-
-
-
- protected function processChecksum() {
- if ($this->checksumValue === false) {
- $this->calculateChecksum();
- }
-
- if ($this->checksumValue !== false) {
- return $this->keys[$this->checksumValue];
- }
-
- return false;
- }
- }
- ?>
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