<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Barcode\Object;

use 
Zend\Validator\Barcode as BarcodeValidator;

/**
 * Class for generate Ean8 barcode
 */
class Ean8 extends Ean13
{

    
/**
     * Default options for Postnet barcode
     * @return void
     */
    
protected function getDefaultOptions()
    {
        
$this->barcodeLength 8;
        
$this->mandatoryChecksum true;
    }

    
/**
     * Width of the barcode (in pixels)
     * @return integer
     */
    
protected function calculateBarcodeWidth()
    {
        
$quietZone       $this->getQuietZone();
        
$startCharacter  = ($this->barThinWidth) * $this->factor;
        
$middleCharacter = ($this->barThinWidth) * $this->factor;
        
$stopCharacter   = ($this->barThinWidth) * $this->factor;
        
$encodedData     = ($this->barThinWidth) * $this->factor 8;
        return 
$quietZone $startCharacter $middleCharacter $encodedData $stopCharacter $quietZone;
    }

        
/**
     * Prepare array to draw barcode
     * @return array
     */
    
protected function prepareBarcode()
    {
        
$barcodeTable = array();
        
$height = ($this->drawText) ? 1.1 1;

        
// Start character (101)
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);

        
$textTable str_split($this->getText());

        
// First part
        
for ($i 0$i 4$i++) {
            
$bars str_split($this->codingMap['A'][$textTable[$i]]);
            foreach (
$bars as $b) {
                
$barcodeTable[] = array($b $this->barThinWidth 1);
            }
        }

        
// Middle character (01010)
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);

        
// Second part
        
for ($i 4$i 8$i++) {
            
$bars str_split($this->codingMap['C'][$textTable[$i]]);
            foreach (
$bars as $b) {
                
$barcodeTable[] = array($b $this->barThinWidth 1);
            }
        }

        
// Stop character (101)
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        
$barcodeTable[] = array($this->barThinWidth $height);
        return 
$barcodeTable;
    }

    
/**
     * Partial function to draw text
     * @return void
     */
    
protected function drawText()
    {
        if (
$this->drawText) {
            
$text $this->getTextToDisplay();
            
$characterWidth = ($this->barThinWidth) * $this->factor;
            
$leftPosition $this->getQuietZone() + ($this->barThinWidth) * $this->factor;
            for (
$i 0$i $this->barcodeLength$i ++) {
                
$this->addText(
                    
$text{$i},
                    
$this->fontSize $this->factor,
                    
$this->rotate(
                        
$leftPosition,
                        (int) 
$this->withBorder 2
                            
$this->factor * ($this->barHeight $this->fontSize) + 1
                    
),
                    
$this->font,
                    
$this->foreColor,
                    
'left',
                    - 
$this->orientation
                
);
                switch (
$i) {
                    case 
3:
                        
$factor 4;
                        break;
                    default:
                        
$factor 0;
                }
                
$leftPosition $leftPosition $characterWidth + ($factor $this->barThinWidth $this->factor);
            }
        }
    }

    
/**
     * Particular validation for Ean8 barcode objects
     * (to suppress checksum character substitution)
     *
     * @param string $value
     * @param array  $options
     * @throws Exception\BarcodeValidationException
     */
    
protected function validateSpecificText($value$options = array())
    {
        
$validator = new BarcodeValidator(array(
            
'adapter'  => 'ean8',
            
'checksum' => false,
        ));

        
$value $this->addLeadingZeros($valuetrue);

        if (!
$validator->isValid($value)) {
            
$message implode("\n"$validator->getMessages());
            throw new 
Exception\BarcodeValidationException($message);
        }
    }
}