259 lines
8.4 KiB
PHP
259 lines
8.4 KiB
PHP
<?php
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if(!defined('IN_CB'))die('You are not allowed to access to this page.');
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/**
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* upce.php
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*--------------------------------------------------------------------
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*
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* Sub-Class - UPC-E
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*
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* You can provide a UPC-A code (without dash), the code will transform
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* it into a UPC-E format if it's possible.
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* UPC-E contains
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* - 1 system digits (not displayed but coded with parity)
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* - 6 digits
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* - 1 checksum digit (not displayed but coded with parity)
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*
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*--------------------------------------------------------------------
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* Revision History
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* V1.00 17 jun 2004 Jean-Sebastien Goupil
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*--------------------------------------------------------------------
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* Copyright (C) Jean-Sebastien Goupil
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* http://other.lookstrike.com/barcode/
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*/
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class upce extends BarCode {
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protected $keys = array(), $code = array(), $codeParity = array();
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protected $text;
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protected $textfont;
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/**
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* Constructor
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*
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* @param int $maxHeight
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* @param FColor $color1
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* @param FColor $color2
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* @param int $res
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* @param string $text
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* @param int $textfont
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*/
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public function __construct($maxHeight,FColor $color1,FColor $color2,$res,$text,$textfont) {
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BarCode::__construct($maxHeight,$color1,$color2,$res);
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$this->keys = array('0','1','2','3','4','5','6','7','8','9');
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// Odd Parity starting with a space
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// Even Parity is the inverse (0=0012) starting with a space
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$this->code = array(
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'2100', /* 0 */
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'1110', /* 1 */
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'1011', /* 2 */
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'0300', /* 3 */
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'0021', /* 4 */
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'0120', /* 5 */
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'0003', /* 6 */
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'0201', /* 7 */
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'0102', /* 8 */
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'2001' /* 9 */
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);
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// Parity, 0=Odd, 1=Even for manufacturer code. Depending on 1st System Digit and Checksum
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$this->codeParity = array(
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array(
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array(1,1,1,0,0,0), /* 0,0 */
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array(1,1,0,1,0,0), /* 0,1 */
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array(1,1,0,0,1,0), /* 0,2 */
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array(1,1,0,0,0,1), /* 0,3 */
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array(1,0,1,1,0,0), /* 0,4 */
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array(1,0,0,1,1,0), /* 0,5 */
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array(1,0,0,0,1,1), /* 0,6 */
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array(1,0,1,0,1,0), /* 0,7 */
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array(1,0,1,0,0,1), /* 0,8 */
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array(1,0,0,1,0,1) /* 0,9 */
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),
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array(
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array(0,0,0,1,1,1), /* 0,0 */
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array(0,0,1,0,1,1), /* 0,1 */
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array(0,0,1,1,0,1), /* 0,2 */
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array(0,0,1,1,1,0), /* 0,3 */
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array(0,1,0,0,1,1), /* 0,4 */
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array(0,1,1,0,0,1), /* 0,5 */
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array(0,1,1,1,0,0), /* 0,6 */
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array(0,1,0,1,0,1), /* 0,7 */
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array(0,1,0,1,1,0), /* 0,8 */
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array(0,1,1,0,1,0) /* 0,9 */
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)
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);
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$this->setText($text);
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$this->textfont = $textfont;
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}
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/**
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* Saves Text
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*
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* @param string $text
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*/
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public function setText($text) {
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$this->text = $text;
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}
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private function inverse($text,$inverse=1) {
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if($inverse==true)
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$text = strrev($text);
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return $text;
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}
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private function checksum($text) {
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$odd = true;
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$checksum=0;
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for($i=strlen($this->text);$i>0;$i--) {
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if($odd==true){
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$multiplier=3;
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$odd=false;
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}
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else{
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$multiplier=1;
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$odd=true;
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}
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$checksum += $this->keys[$this->text[$i - 1]] * $multiplier;
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}
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$checksum = 10 - $checksum % 10;
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$checksum = ($checksum == 10)?0:$checksum;
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return $checksum;
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}
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/**
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* Draws the barcode
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*
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* @param ressource $im
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*/
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public function draw($im) {
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$error_stop = false;
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// Checking if all chars are allowed
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for($i=0;$i<strlen($this->text);$i++) {
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if(!is_int(array_search($this->text[$i],$this->keys))) {
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$this->DrawError($im,'Char \''.$this->text[$i].'\' not allowed.');
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$error_stop = true;
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}
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}
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if($error_stop == false) {
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// Must contains 11 chars
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// Must contains 8 chars (if starting with upce directly)
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// First Chars must be 0 or 1
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if(strlen($this->text) != 11 && strlen($this->text) != 6) {
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$this->DrawError($im,'Provide an UPC-A (11 chars) or');
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$this->DrawError($im,'You can also provide UPC-E directly (6 chars).');
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$error_stop = true;
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}
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elseif($this->text[0] != '0' && $this->text[0] != '1' && strlen($this->text) != 6) {
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$this->DrawError($im,'Must starts with 0 or 1.');
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$error_stop = true;
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}
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if($error_stop == false) {
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if(strlen($this->text) != 6) {
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// Checking if UPC-A is convertible
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$upce = '';
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if(substr($this->text,3,3) == '000' || substr($this->text,3,3) == '100' || substr($this->text,3,3) == '200') { // manufacturer code ends with 100,200 or 300
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if(substr($this->text,6,2) == '00') // Product must start with 00
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$upce = substr($this->text,1,2).substr($this->text,8,3).substr($this->text,3,1);
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else
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$error_stop = true;
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}
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elseif(substr($this->text,4,2) == '00') { // manufacturer code ends with 00
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if(substr($this->text,6,3) == '000') // Product must start with 000
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$upce = substr($this->text,1,3).substr($this->text,9,2).'3';
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else
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$error_stop = true;
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}
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elseif(substr($this->text,5,1) == '0') { // manufacturer code ends with 0
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if(substr($this->text,6,4) == '0000') // Product must start with 0000
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$upce = substr($this->text,1,4).substr($this->text,10,1).'4';
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else
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$error_stop = true;
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}
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else{ // No zero leading at manufacturer code
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if(substr($this->text,6,4) == '0000' && intval(substr($this->text,10,1)) >= 5 && intval(substr($this->text,10,1)) <= 9) // Product must start with 0000 and must over by 5,6,7,8 or 9
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$upce = substr($this->text,1,5).substr($this->text,10,1);
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else
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$error_stop = true;
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}
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}
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else
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$upce = $this->text;
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if($error_stop == false) {
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// Calculating Checksum
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// Consider the right-most digit of the message to be in an "odd" position,
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// and assign odd/even to each character moving from right to left
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// Odd Position = 3, Even Position = 1
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// Multiply it by the number
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// Add all of that and do 10-(?mod10)
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if(strlen($this->text) != 6)
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$checksum = $this->checksum($this->text);
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else {
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// We convert UPC-E to UPC-A to find the checksum
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if($this->text[5] == '0' || $this->text[5] == '1' || $this->text[5] == '2')
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$upca = substr($this->text,0,2).$this->text[5].'0000'.substr($this->text,2,3);
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elseif($this->text[5] == '3')
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$upca = substr($this->text,0,3).'00000'.substr($this->text,3,2);
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elseif($this->text[5] == '4')
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$upca = substr($this->text,0,4).'00000'.$this->text[4];
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else
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$upca = substr($this->text,0,5).'0000'.$this->text[5];
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$this->text = '0'.$upca;
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$checksum = $this->checksum($this->text);
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}
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// If we have to write text, we move the barcode to the right to have space to put system digit
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$this->positionX = ($this->textfont == 0)?0:10;
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// Starting Code
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$this->DrawChar($im,'000',1);
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for($i=0;$i<strlen($upce);$i++)
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$this->DrawChar($im,$this->inverse($this->findCode($upce[$i]),$this->codeParity[$this->text[0]][$checksum][$i]),2);
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// Draw Center Guard Bar
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$this->DrawChar($im,'00000',2);
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// Draw Right Bar
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$this->DrawChar($im,'0',1);
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$this->lastX = $this->positionX;
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$this->lastY = $this->maxHeight;
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$this->text = $this->text[0].$upce.$checksum;
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$this->DrawText($im);
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}
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else
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$this->DrawError($im,'Your UPC-A can\'t be converted to UPC-E.');
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}
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}
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}
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/**
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* Overloaded method for drawing special label
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*
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* @param ressource $im
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*/
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protected function DrawText($im) {
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if($this->textfont != 0) {
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$bar_color = (is_null($this->color1))?NULL:$this->color1->allocate($im);
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if(!is_null($bar_color)) {
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$rememberX = $this->positionX;
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$rememberH = $this->maxHeight;
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// We increase the bars
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$this->maxHeight = $this->maxHeight + 9;
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$this->positionX = 10;
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$this->DrawSingleBar($im,$this->color1);
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$this->positionX += $this->res*2;
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$this->DrawSingleBar($im,$this->color1);
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// Last Bars
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$this->positionX += $this->res*46;
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$this->DrawSingleBar($im,$this->color1);
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$this->positionX += $this->res*2;
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$this->DrawSingleBar($im,$this->color1);
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$this->positionX = $rememberX;
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$this->maxHeight = $rememberH;
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imagechar($im,$this->textfont,1,$this->maxHeight-(imagefontheight($this->textfont)/2),$this->text[0],$bar_color);
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imagestring($im,$this->textfont,10+(4*$this->res+48*$this->res)/2-imagefontwidth($this->textfont)*(6/2),$this->maxHeight+1,substr($this->text,1,6),$bar_color);
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imagechar($im,$this->textfont,2+10+(48+4)*$this->res,$this->maxHeight-(imagefontheight($this->textfont)/2),$this->text[7],$bar_color);
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}
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$this->lastY = $this->maxHeight + imagefontheight($this->textfont);
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$this->lastX += 2 + imagefontwidth($this->textfont);
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}
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}
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};
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?>
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