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✏️ Editing: Barcode39.php

<?php

namespace CpChart\Barcode;

use CpChart\Image;
use Exception;

/**
 *  pBarcode39 - class to create barcodes (39B)
 *
 *  Version     : 2.1.4
 *  Made by     : Jean-Damien POGOLOTTI
 *  Last Update : 19/01/2014
 *
 *  This file can be distributed under the license you can find at :
 *
 *  http://www.pchart.net/license
 *
 *  You can find the whole class documentation on the pChart web site.
 */
class Barcode39
{
    /**
     * @var array
     */
    public $Codes;

/**
     * @var array
     */
    public $Reverse;

/**
     * @var string
     */
    public $Result;

/**
     * @var Image
     */
    public $pChartObject;

/**
     * @var integer
     */
    public $CRC;

/**
     * @var boolean
     */
    public $MOD43;

/**
     * @param string $filePath
     * @param boolean $EnableMOD43
     * @throws Exception
     */
    public function __construct($filePath = "", $EnableMOD43 = false)
    {
        $this->MOD43 = (boolean) $EnableMOD43;
        $this->Codes = [];
        $this->Reverse = [];
        if (!file_exists($filePath)) {
            $filePath = sprintf('%s/../../resources/barcode/39.db', __DIR__);
        }

$FileHandle = @fopen($filePath, "r");
        if (!$FileHandle) {
            throw new Exception(
                "Cannot find barcode database (" . $filePath . ")."
            );
        }

while (!feof($FileHandle)) {
            $Buffer = fgets($FileHandle, 4096);
            $Buffer = str_replace(chr(10), "", $Buffer);
            $Buffer = str_replace(chr(13), "", $Buffer);
            $Values = preg_split("/;/", $Buffer);

$this->Codes[$Values[0]] = $Values[1];
        }
        fclose($FileHandle);
    }

/**
     * Return the projected size of a barcode
     *
     * @param string $TextString
     * @param string $Format
     * @return array
     */
    public function getSize($TextString, $Format = "")
    {
        $Angle = isset($Format["Angle"]) ? $Format["Angle"] : 0;
        $ShowLegend = isset($Format["ShowLegend"]) ? $Format["ShowLegend"] : false;
        $LegendOffset = isset($Format["LegendOffset"]) ? $Format["LegendOffset"] : 5;
        $DrawArea = isset($Format["DrawArea"]) ? $Format["DrawArea"] : false;
        $FontSize = isset($Format["FontSize"]) ? $Format["FontSize"] : 12;
        $Height = isset($Format["Height"]) ? $Format["Height"] : 30;

$TextString = $this->encode39($TextString);
        $BarcodeLength = strlen($this->Result);

$WOffset = $DrawArea ? 20 : 0;
        $HOffset = $ShowLegend ? $FontSize + $LegendOffset + $WOffset : 0;

$X1 = cos($Angle * PI / 180) * ($WOffset + $BarcodeLength);
        $Y1 = sin($Angle * PI / 180) * ($WOffset + $BarcodeLength);

$X2 = $X1 + cos(($Angle + 90) * PI / 180) * ($HOffset + $Height);
        $Y2 = $Y1 + sin(($Angle + 90) * PI / 180) * ($HOffset + $Height);

$AreaWidth = max(abs($X1), abs($X2));
        $AreaHeight = max(abs($Y1), abs($Y2));

return ["Width" => $AreaWidth, "Height" => $AreaHeight];
    }

/**
     * Create the encoded string
     *
     * @param string $Value
     * @return string
     */
    public function encode39($Value)
    {
        $this->Result = "100101101101" . "0";
        $TextString = "";
        for ($i = 1; $i <= strlen($Value); $i++) {
            $CharCode = ord($this->mid($Value, $i, 1));
            if ($CharCode >= 97 && $CharCode <= 122) {
                $CharCode = $CharCode - 32;
            }

if (isset($this->Codes[chr($CharCode)])) {
                $this->Result = $this->Result . $this->Codes[chr($CharCode)] . "0";
                $TextString = $TextString . chr($CharCode);
            }
        }

if ($this->MOD43) {
            $Checksum = $this->checksum($TextString);
            $this->Result = $this->Result . $this->Codes[$Checksum] . "0";
        }

$this->Result = $this->Result . "100101101101";
        $TextString = "*" . $TextString . "*";

return $TextString;
    }

/**
     * Create the encoded string
     * @param Image $Object
     * @param type $Value
     * @param type $X
     * @param type $Y
     * @param array $Format
     */
    public function draw(Image $Object, $Value, $X, $Y, $Format = [])
    {
        $this->pChartObject = $Object;

$R = isset($Format["R"]) ? $Format["R"] : 0;
        $G = isset($Format["G"]) ? $Format["G"] : 0;
        $B = isset($Format["B"]) ? $Format["B"] : 0;
        $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 100;
        $Height = isset($Format["Height"]) ? $Format["Height"] : 30;
        $Angle = isset($Format["Angle"]) ? $Format["Angle"] : 0;
        $ShowLegend = isset($Format["ShowLegend"]) ? $Format["ShowLegend"] : false;
        $LegendOffset = isset($Format["LegendOffset"]) ? $Format["LegendOffset"] : 5;
        $DrawArea = isset($Format["DrawArea"]) ? $Format["DrawArea"] : false;
        $AreaR = isset($Format["AreaR"]) ? $Format["AreaR"] : 255;
        $AreaG = isset($Format["AreaG"]) ? $Format["AreaG"] : 255;
        $AreaB = isset($Format["AreaB"]) ? $Format["AreaB"] : 255;
        $AreaBorderR = isset($Format["AreaBorderR"]) ? $Format["AreaBorderR"] : $AreaR;
        $AreaBorderG = isset($Format["AreaBorderG"]) ? $Format["AreaBorderG"] : $AreaG;
        $AreaBorderB = isset($Format["AreaBorderB"]) ? $Format["AreaBorderB"] : $AreaB;

$TextString = $this->encode39($Value);

if ($DrawArea) {
            $X1 = $X + cos(($Angle - 135) * PI / 180) * 10;
            $Y1 = $Y + sin(($Angle - 135) * PI / 180) * 10;

$X2 = $X1 + cos($Angle * PI / 180) * (strlen($this->Result) + 20);
            $Y2 = $Y1 + sin($Angle * PI / 180) * (strlen($this->Result) + 20);

if ($ShowLegend) {
                $X3 = $X2
                    + cos(($Angle + 90) * PI / 180)
                    * ($Height + $LegendOffset + $this->pChartObject->FontSize + 10)
                ;
                $Y3 = $Y2
                    + sin(($Angle + 90) * PI / 180)
                    * ($Height + $LegendOffset + $this->pChartObject->FontSize + 10)
                ;
            } else {
                $X3 = $X2 + cos(($Angle + 90) * PI / 180) * ($Height + 20);
                $Y3 = $Y2 + sin(($Angle + 90) * PI / 180) * ($Height + 20);
            }

$X4 = $X3 + cos(($Angle + 180) * PI / 180) * (strlen($this->Result) + 20);
            $Y4 = $Y3 + sin(($Angle + 180) * PI / 180) * (strlen($this->Result) + 20);

$Polygon = [$X1, $Y1, $X2, $Y2, $X3, $Y3, $X4, $Y4];
            $Settings = [
                "R" => $AreaR,
                "G" => $AreaG,
                "B" => $AreaB,
                "BorderR" => $AreaBorderR,
                "BorderG" => $AreaBorderG,
                "BorderB" => $AreaBorderB
            ];
            $this->pChartObject->drawPolygon($Polygon, $Settings);
        }

for ($i = 1; $i <= strlen($this->Result); $i++) {
            if ($this->mid($this->Result, $i, 1) == 1) {
                $X1 = $X + cos($Angle * PI / 180) * $i;
                $Y1 = $Y + sin($Angle * PI / 180) * $i;
                $X2 = $X1 + cos(($Angle + 90) * PI / 180) * $Height;
                $Y2 = $Y1 + sin(($Angle + 90) * PI / 180) * $Height;

$Settings = ["R" => $R, "G" => $G, "B" => $B, "Alpha" => $Alpha];
                $this->pChartObject->drawLine($X1, $Y1, $X2, $Y2, $Settings);
            }
        }

if ($ShowLegend) {
            $X1 = $X + cos($Angle * PI / 180) * (strlen($this->Result) / 2);
            $Y1 = $Y + sin($Angle * PI / 180) * (strlen($this->Result) / 2);

$LegendX = $X1 + cos(($Angle + 90) * PI / 180) * ($Height + $LegendOffset);
            $LegendY = $Y1 + sin(($Angle + 90) * PI / 180) * ($Height + $LegendOffset);

$Settings = [
                "R" => $R,
                "G" => $G,
                "B" => $B,
                "Alpha" => $Alpha,
                "Angle" => -$Angle,
                "Align" => TEXT_ALIGN_TOPMIDDLE
            ];
            $this->pChartObject->drawText($LegendX, $LegendY, $TextString, $Settings);
        }
    }

/**
     * @param string $string
     * @return string
     */
    public function checksum($string)
    {
        $checksum = 0;
        $length = strlen($string);
        $charset = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%';

for ($i = 0; $i < $length; ++$i) {
            $checksum += strpos($charset, $string[$i]);
        }
        return substr($charset, ($checksum % 43), 1);
    }

/**
     * @param string $value
     * @param int $NbChar
     * @return string
     */
    public function left($value, $NbChar)
    {
        return substr($value, 0, $NbChar);
    }

/**
     * @param string $value
     * @param int $NbChar
     * @return string|false
     */
    public function right($value, $NbChar)
    {
        return substr($value, strlen($value) - $NbChar, $NbChar);
    }

/**
     * @param string $value
     * @param int $Depart
     * @param int $NbChar
     * @return string
     */
    public function mid($value, $Depart, $NbChar)
    {
        return substr($value, $Depart - 1, $NbChar);
    }
}

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