File Content: BCGupce.barcode.php <?php /** *-------------------------------------------------------------------- * * Sub-Class - UPC-E * * You can provide a UPC-A code (without dash), the code will transform * it into a UPC-E format if it's possible. * UPC-E contains * - 1 system digits (not displayed but coded with parity) * - 6 digits * - 1 checksum digit (not displayed but coded with parity) * * The text returned is the UPC-E without the checksum. * The checksum is always displayed. * *-------------------------------------------------------------------- * Copyright (C) Jean-Sebastien Goupil * http://www.barcodephp.com */ include_once('BCGParseException.php'); include_once('BCGBarcode1D.php'); class BCGupce extends BCGBarcode1D { protected $codeParity = array(); protected $upce; protected $labelLeft = null; protected $labelCenter = null; protected $labelRight = null; /** * Constructor. */ public function __construct() { parent::__construct(); $this->keys = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9'); // Odd Parity starting with a space // Even Parity is the inverse (0=0012) starting with a space $this->code = array( '2100', /* 0 */ '1110', /* 1 */ '1011', /* 2 */ '0300', /* 3 */ '0021', /* 4 */ '0120', /* 5 */ '0003', /* 6 */ '0201', /* 7 */ '0102', /* 8 */ '2001' /* 9 */ ); // Parity, 0=Odd, 1=Even for manufacturer code. Depending on 1st System Digit and Checksum $this->codeParity = array( array( array(1, 1, 1, 0, 0, 0), /* 0,0 */ array(1, 1, 0, 1, 0, 0), /* 0,1 */ array(1, 1, 0, 0, 1, 0), /* 0,2 */ array(1, 1, 0, 0, 0, 1), /* 0,3 */ array(1, 0, 1, 1, 0, 0), /* 0,4 */ array(1, 0, 0, 1, 1, 0), /* 0,5 */ array(1, 0, 0, 0, 1, 1), /* 0,6 */ array(1, 0, 1, 0, 1, 0), /* 0,7 */ array(1, 0, 1, 0, 0, 1), /* 0,8 */ array(1, 0, 0, 1, 0, 1) /* 0,9 */ ), array( array(0, 0, 0, 1, 1, 1), /* 0,0 */ array(0, 0, 1, 0, 1, 1), /* 0,1 */ array(0, 0, 1, 1, 0, 1), /* 0,2 */ array(0, 0, 1, 1, 1, 0), /* 0,3 */ array(0, 1, 0, 0, 1, 1), /* 0,4 */ array(0, 1, 1, 0, 0, 1), /* 0,5 */ array(0, 1, 1, 1, 0, 0), /* 0,6 */ array(0, 1, 0, 1, 0, 1), /* 0,7 */ array(0, 1, 0, 1, 1, 0), /* 0,8 */ array(0, 1, 1, 0, 1, 0) /* 0,9 */ ) ); } /** * Draws the barcode. * * @param resource $im */ public function draw($im) { $this->calculateChecksum(); // Starting Code $this->drawChar($im, '000', true); $c = strlen($this->upce); for ($i = 0; $i < $c; $i++) { $this->drawChar($im, self::inverse($this->findCode($this->upce[$i]), $this->codeParity[$this->text[0]][$this->checksumValue][$i]), false); } // Draw Center Guard Bar $this->drawChar($im, '00000', false); // Draw Right Bar $this->drawChar($im, '0', true); $this->text = $this->text[0] . $this->upce; $this->drawText($im, 0, 0, $this->positionX, $this->thickness); if ($this->isDefaultEanLabelEnabled()) { $dimension = $this->labelCenter->getDimension(); $this->drawExtendedBars($im, $dimension[1] - 2); } } /** * Returns the maximal size of a barcode. * * @param int $w * @param int $h * @return int[] */ public function getDimension($w, $h) { $startlength = 3; $centerlength = 5; $textlength = 6 * 7; $endlength = 1; $w += $startlength + $centerlength + $textlength + $endlength; $h += $this->thickness; return parent::getDimension($w, $h); } /** * Adds the default label. */ protected function addDefaultLabel() { if ($this->isDefaultEanLabelEnabled()) { $this->processChecksum(); $label = $this->getLabel(); $font = $this->font; $this->labelLeft = new BCGLabel(substr($this->text, 0, 1), $font, BCGLabel::POSITION_LEFT, BCGLabel::ALIGN_BOTTOM); $labelLeftDimension = $this->labelLeft->getDimension(); $this->labelLeft->setSpacing(8); $this->labelLeft->setOffset($labelLeftDimension[1] / 2); $this->labelCenter = new BCGLabel(substr($this->upce, 0), $font, BCGLabel::POSITION_BOTTOM, BCGLabel::ALIGN_LEFT); $labelCenterDimension = $this->labelCenter->getDimension(); $this->labelCenter->setOffset(($this->scale * 46 - $labelCenterDimension[0]) / 2 + $this->scale * 2); $this->labelRight = new BCGLabel($this->keys[$this->checksumValue], $font, BCGLabel::POSITION_RIGHT, BCGLabel::ALIGN_BOTTOM); $labelRightDimension = $this->labelRight->getDimension(); $this->labelRight->setSpacing(8); $this->labelRight->setOffset($labelRightDimension[1] / 2); $this->addLabel($this->labelLeft); $this->addLabel($this->labelCenter); $this->addLabel($this->labelRight); } } /** * Checks if the default ean label is enabled. * * @return bool */ protected function isDefaultEanLabelEnabled() { $label = $this->getLabel(); $font = $this->font; return $label !== null && $label !== '' && $font !== null && $this->defaultLabel !== null; } /** * Validates the input. */ protected function validate() { $c = strlen($this->text); if ($c === 0) { throw new BCGParseException('upce', 'No data has been entered.'); } // Checking if all chars are allowed for ($i = 0; $i < $c; $i++) { if (array_search($this->text[$i], $this->keys) === false) { throw new BCGParseException('upce', 'The character \'' . $this->text[$i] . '\' is not allowed.'); } } // Must contain 11 chars // Must contain 6 chars (if starting with upce directly) // First Chars must be 0 or 1 if ($c !== 11 && $c !== 6) { throw new BCGParseException('upce', 'You must provide a UPC-A (11 characters) or a UPC-E (6 characters).'); } elseif ($this->text[0] !== '0' && $this->text[0] !== '1' && $c !== 6) { throw new BCGParseException('upce', 'UPC-A must start with 0 or 1 to be converted to UPC-E.'); } // Convert part $this->upce = ''; if ($c !== 6) { // Checking if UPC-A is convertible $temp1 = substr($this->text, 3, 3); if ($temp1 === '000' || $temp1 === '100' || $temp1 === '200') { // manufacturer code ends with 100, 200 or 300 if (substr($this->text, 6, 2) === '00') { // Product must start with 00 $this->upce = substr($this->text, 1, 2) . substr($this->text, 8, 3) . substr($this->text, 3, 1); } } elseif (substr($this->text, 4, 2) === '00') { // manufacturer code ends with 00 if (substr($this->text, 6, 3) === '000') { // Product must start with 000 $this->upce = substr($this->text, 1, 3) . substr($this->text, 9, 2) . '3'; } } elseif (substr($this->text, 5, 1) === '0') { // manufacturer code ends with 0 if (substr($this->text, 6, 4) === '0000') { // Product must start with 0000 $this->upce = substr($this->text, 1, 4) . substr($this->text, 10, 1) . '4'; } } else { // No zero leading at manufacturer code $temp2 = intval(substr($this->text, 10, 1)); if (substr($this->text, 6, 4) === '0000' && $temp2 >= 5 && $temp2 <= 9) { // Product must start with 0000 and must end by 5, 6, 7, 8 or 9 $this->upce = substr($this->text, 1, 5) . substr($this->text, 10, 1); } } } else { $this->upce = $this->text; } if ($this->upce === '') { throw new BCGParseException('upce', 'Your UPC-A can\'t be converted to UPC-E.'); } if ($c === 6) { $upca = ''; // We convert UPC-E to UPC-A to find the checksum if ($this->text[5] === '0' || $this->text[5] === '1' || $this->text[5] === '2') { $upca = substr($this->text, 0, 2) . $this->text[5] . '0000' . substr($this->text, 2, 3); } elseif ($this->text[5] === '3') { $upca = substr($this->text, 0, 3) . '00000' . substr($this->text, 3, 2); } elseif ($this->text[5] === '4') { $upca = substr($this->text, 0, 4) . '00000' . $this->text[4]; } else { $upca = substr($this->text, 0, 5) . '0000' . $this->text[5]; } $this->text = '0' . $upca; } parent::validate(); } /** * Overloaded method to calculate checksum. */ protected function calculateChecksum() { // Calculating Checksum // Consider the right-most digit of the message to be in an "odd" position, // and assign odd/even to each character moving from right to left // Odd Position = 3, Even Position = 1 // Multiply it by the number // Add all of that and do 10-(?mod10) $odd = true; $this->checksumValue = 0; $c = strlen($this->text); for ($i = $c; $i > 0; $i--) { if ($odd === true) { $multiplier = 3; $odd = false; } else { $multiplier = 1; $odd = true; } if (!isset($this->keys[$this->text[$i - 1]])) { return; } $this->checksumValue += $this->keys[$this->text[$i - 1]] * $multiplier; } $this->checksumValue = (10 - $this->checksumValue % 10) % 10; } /** * Overloaded method to display the checksum. */ protected function processChecksum() { if ($this->checksumValue === false) { // Calculate the checksum only once $this->calculateChecksum(); } if ($this->checksumValue !== false) { return $this->keys[$this->checksumValue]; } return false; } /** * Draws the extended bars on the image. * * @param resource $im * @param int $plus */ protected function drawExtendedBars($im, $plus) { $rememberX = $this->positionX; $rememberH = $this->thickness; // We increase the bars $this->thickness = $this->thickness + intval($plus / $this->scale); $this->positionX = 0; $this->drawSingleBar($im, BCGBarcode::COLOR_FG); $this->positionX += 2; $this->drawSingleBar($im, BCGBarcode::COLOR_FG); $code1 = $this->positionX; // Last Bars $this->positionX += 46; $this->drawSingleBar($im, BCGBarcode::COLOR_FG); $this->positionX += 2; $this->drawSingleBar($im, BCGBarcode::COLOR_FG); $this->positionX = $rememberX; $this->thickness = $rememberH; } /** * Inverses the string when the $inverse parameter is equal to 1. * * @param string $text * @param int $inverse * @return string */ private static function inverse($text, $inverse = 1) { if ($inverse === 1) { $text = strrev($text); } return $text; } } ?> Submit