Posprint\Printers\DefaultPrinter

Complexity

Total Complexity

98

Size/Duplication

Total Lines	1029
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

69.84%

Importance

Changes	4
Bugs	0	Features	0

39 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	7	2
A	defaultRegionPage()	0	14	4
A	defaultCodePage()	0	15	4
A	setCodePage()	0	5	1
A	setRegionPage()	0	6	1
A	defaultFont()	0	18	4
A	setFont()	0	6	1
A	setBold()	0	11	2
A	setUnderlined()	0	11	2
A	setAlign()	0	18	4
A	setReverseColors()	0	11	2
A	setExpanded()	0	16	1
A	setCondensed()	0	5	1
	setPrintMode()	0	1	?
A	setRotate90()	0	11	2
A	initialize()	0	10	1
A	text()	0	5	1
A	setSpacing()	0	6	1
A	setCharSpacing()	0	5	1
A	setParagraph()	0	15	4
A	lineFeed()	0	9	2
A	dotFeed()	0	5	1
A	pulse()	0	7	1
A	cut()	0	10	2
B	barcode()	0	44	6
B	barcodeQRCode()	0	37	6
A	close()	0	4	1
C	getBuffer()	0	35	7
A	send()	0	13	4
B	validateBarcodeData()	0	32	2
B	putImage()	0	18	5
A	getWordLength()	0	5	1
A	intLowHigh()	0	10	2
A	dataHeader()	0	13	3
A	validateBoolean()	0	7	3
A	validateInteger()	0	7	4
A	validateString()	0	7	3
A	translate()	0	11	3
A	sendGraphicsData()	0	8	3

<?php

namespace Posprint\Printers;

/*
 * Default class for POS thermal printers.
 * 
 * From this class all other are extended.
 * In the child classes should be included all the commands that are different
 * from those in this class, especially those specific to particular brand and 
 * model of printer
 * 
 * NOTE: It was built around the commands of the Epson TM-T20,
 * so in theory the Epson class will be almost empty just extending this class.
 * 
 * CodePage default WINDOWS-1250
 * CountyPage default LATIN
 * 
 * @category   NFePHP
 * @package    Posprint
 * @copyright  Copyright (c) 2016
 * @license    http://www.gnu.org/licenses/lesser.html LGPL v3
 * @author     Roberto L. Machado <linux.rlm at gmail dot com>
 * @link       http://github.com/nfephp-org/posprint for the canonical source repository
 */

use Posprint\Connectors\ConnectorInterface;
use Posprint\Connectors\Buffer;
use Posprint\Graphics\Graphics;
use RuntimeException;
use InvalidArgumentException;

abstract class DefaultPrinter implements PrinterInterface
{
    //set standards
    const NUL = "\x0"; //Nulo
    const EOT = "\x4"; //EOT fim da transmissão
    const ENQ = "\x5"; //ENQ colocar na fila Pedido de status 1
    const HT = "\x9"; //tabulação horizontal
    const VT = "\xb"; //tabulação vertical
    const LF = "\x0a"; //Inicia a impressão e avança uma linha
    const FF = "\x0c"; //avança pagina
    const CR = "\x0d"; //retorno de carro
    const DLE = "\x10"; //Data Link Escape
    const CAN = "\x18"; //CAN Cancela linha enviada
    const BEL = "\x07"; //BEL sinal sonoro
    const ESC = "\x1b"; //escape
    const FS = "\x1c"; //FS
    const GS = "\x1d"; //GS
    const SO = "\x0e"; //SO Inicia modo expandido
    const DC1 = "\x11"; //DC1 Inicia modo enfatizado
    const DC2 = "\x12"; //DC2 Cancela modo condensado
    const DC3 = "\x13"; //DC3 Cancela modo enfatizado
    const DC4 = "\x14"; //DC4 Controle de dispositivo 4 Inicia modo normal
    const SI = "\x0f"; //Seleciona modo condensado
    const EM = "\x19"; //Avança 4 linhas
    const DEL = "\x7f"; //Cancela último caracter
    const SYN = "\x16"; //Sincronismo
    const NOTRANS = false; //not translate characters codepage
    const TRANS = true; //perform a character convertion to codepage

    // Cut types 
    const CUT_FULL = 65;
    const CUT_PARTIAL = 66;

    //1D barcode types
    const UPC_A = 'A';
    const UPC_E = 'B';
    const EAN13 = 'C';
    const EAN8 = 'D';
    const CODE39 = 'E';
    const ITF = 'F';
    const CODABAR = 'G';
    const CODE93 = 'H';
    const CODE128 = 'I';
    const GS1_128 = 'J';
    const GS1_DataBar_Omnidirectional = 'K';
    const GS1_DataBar_Truncated = 'L';
    const GS1_DataBar_Limited = 'M';
    const GS1_DataBar_Expanded = 'N';

    /**
     * List all available region pages.
     *
     * @var array
     */
    protected $aRegion = array(
        'USA',
        'FRANCE',
        'GERMANY',
        'UK',
        'DENMARK',
        'SWEDEN',
        'ITALY',
        'SPAIN',
        'JAPAN',
        'NORWAY',
        'DENMARK2',
        'SPAIN2',
        'LATIN',
        'KOREA',
        'SLOVENIA',
        'CHINA',
        'VIETNAM',
        'ARABIA',
    );

    /**
     * List all available code pages.
     *
     * @var array
     */
    protected $aCodePage = array(
        'CP437' => array('conv' => '437', 'table' => '0', 'desc' => 'PC437: USA, Standard Europe'),
        'CP850' => array('conv' => '850', 'table' => '2', 'desc' => 'PC850: Multilingual'),
        'CP860' => array('conv' => '860', 'table' => '3', 'desc' => 'PC860: Portuguese'),
        'CP863' => array('conv' => '863', 'table' => '4', 'desc' => 'PC863: Canadian-French'),
        'CP865' => array('conv' => '865', 'table' => '5', 'desc' => 'PC865: Nordic'),
        'CP851' => array('conv' => '851', 'table' => '11', 'desc' => 'PC851: Greek'),
        'CP853' => array('conv' => '853', 'table' => '12', 'desc' => 'PC853: Turkish'),
        'CP857' => array('conv' => '857', 'table' => '13', 'desc' => 'PC857: Turkish'),
        'CP737' => array('conv' => '737', 'table' => '14', 'desc' => 'PC737: Greek'),
        'ISO8859-7' => array('conv' => 'ISO8859-7', 'table' => '15', 'desc' => 'ISO8859-7: Greek'),
        'CP866' => array('conv' => '866', 'table' => '17', 'desc' => 'PC866: Cyrillic #2'),
        'CP852' => array('conv' => '852', 'table' => '18', 'desc' => 'PC852: Latin2'),
        'CP858' => array('conv' => '858', 'table' => '19', 'desc' => 'PC858: Euro'),
        'CP720' => array('conv' => '720', 'table' => '32', 'desc' => 'PC720: Arabic'),
        'CP855' => array('conv' => '855', 'table' => '34', 'desc' => 'PC855: Cyrillic'),
        'CP861' => array('conv' => '861', 'table' => '35', 'desc' => 'PC861: Icelandic'),
        'CP862' => array('conv' => '862', 'table' => '36', 'desc' => 'PC862: Hebrew'),
        'CP864' => array('conv' => '864', 'table' => '37', 'desc' => 'PC864: Arabic'),
        'CP869' => array('conv' => '869', 'table' => '38', 'desc' => 'PC869: Greek'),
        'ISO8859-2' => array('conv' => 'ISO8859-2', 'table' => '39', 'desc' => 'ISO8859-2: Latin2'),
        'ISO8859-15' => array('conv' => 'ISO8859-15', 'table' => '40', 'desc' => 'ISO8859-15: Latin9'),
        'WINDOWS-1250' => array('conv' => 'WINDOWS-1250', 'table' => '45', 'desc' => 'WPC1250: Latin2'),
        'WINDOWS-1251' => array('conv' => 'WINDOWS-1251', 'table' => '46', 'desc' => 'WPC1251: Cyrillic'),
        'WINDOWS-1252' => array('conv' => 'WINDOWS-1252', 'table' => '47', 'desc' => 'WPC1253: Greek'),
        'WINDOWS-1254' => array('conv' => 'WINDOWS-1254', 'table' => '48', 'desc' => 'WPC1254: Turkish'),
        'WINDOWS-1255' => array('conv' => 'WINDOWS-1255', 'table' => '49', 'desc' => 'WPC1255: Hebrew'),
        'WINDOWS-1256' => array('conv' => 'WINDOWS-1256', 'table' => '50', 'desc' => 'WPC1256: Arabic'),
        'WINDOWS-1257' => array('conv' => 'WINDOWS-1257', 'table' => '51', 'desc' => 'WPC1257: Baltic Rim'),
        'WINDOWS-1258' => array('conv' => 'WINDOWS-1258', 'table' => '52', 'desc' => 'WPC1258: Vietnamese'),
    );
    /**
     * Seleted code page
     * Defined in printer class.
     *
     * @var string
     */
    protected $codepage = 'CP437';
    /**
     * Number of codpage in printer memory.
     *
     * @var int
     */
    protected $charsetTableNum = 0;
    /**
     * Selected Region character page
     * Defined in printer class.
     *
     * @var string
     */
    protected $region = 'LATIN';
    /**
     * List all avaiable fonts
     * @var array
     */
    protected $aFont = array(0 => 'A', 1 => 'B', 2 => 'C', 3 => 'D', 4 => 'E', 97 => 'SA', 98 => 'SB');
    /**
     * Selected internal font.
     *
     * @var string
     */
    protected $font = 'A';           
    /**
     * Resolution in dpi.
     *
     * @var int
     */
    public $dpi = 203; //dots per inch
    /**
     * Resolution in dpmm.
     *
     * @var int
     */
    public $dpmm = 8; //dots per mm
    /**
     * Maximum width paper.
     *
     * @var int
     */
    public $widthMaxmm = 80;//mm
    /**
     * Selected Width paper.
     *
     * @var int
     */
    public $widthPaper = 80;//mm
    /**
     * Maximum width for printed area.
     *
     * @var int
     */
    public $widthPrint = 72;//mm
    /**
     * Maximum width for printed area in dots.
     *
     * @var int
     */
    public $widthMaxdots = 576;//dots
    /**
     * Maximum number of characters per line.
     *
     * @var int
     */
    public $maxchars = 48;//max characters per line

    //protected property standards
    /**
     * Connector to printer.
     *
     * @var ConnectosInterface
     */
    protected $connector = null;
    /**
     * Seleted printer mode.
     *
     * @var string
     */
    protected $printerMode = 'normal';
    /**
     * Selected bold mode.
     *
     * @var bool
     */
    protected $boldMode = false;
    /**
     * Selected reverse colors mode.
     *
     * @var bool
     */
    protected $reverseColors = false;
    /**
     * Selected under lined mode.
     * 
     * @var bool
     */
    protected $underlineMode = false;
    /**
     * Selected rotate 90 degrees mode
     * @var bool
     */
    protected $rotateMode = false;
    /**
     * Buffer class.
     *
     * @var Connectors\Buffer
     */
    protected $buffer = null;

    /**
     * Class constructor
     * Instantiates the data buffer.
     *
     * @param ConnectorInterface $conn
     */
    public function __construct(ConnectorInterface $conn = null)
    {
        if (!is_null($conn)) {
            $this->connector = $conn;

It seems like $conn of type object<Posprint\Connectors\ConnectorInterface> is incompatible with the declared type object<Posprint\Printers\ConnectosInterface> of property $connector.

        }
        $this->buffer = new Buffer();

It seems like new \Posprint\Connectors\Buffer() of type object<Posprint\Connectors\Buffer> is incompatible with the declared type object<Posprint\Printers\Connectors\Buffer> of property $buffer.

    }

    /**
     * Returns a default region for codepage
     * if param $region is null will return actual default region from class
     * if param $region is 'all' will return a array with all avaiable regions
     * if param $region is a string will set the region parameter of class and returns it.
     * NOTE: This command do not set the printer, only class parameters
     * 
     * @param string $region
     * @return string|array
     */
    public function defaultRegionPage($region = null)
    {
        if (!is_null($region)) {
            $region = strtoupper(trim($region));
            if ($region == 'ALL') {
                return $this->aRegion;
            }
            $reg = array_search($region, $this->aRegion, true);
            if ($reg !== false) {
                $this->region = $region;
            }
        }
        return $this->region;
    }

    /**
     * Returns a default codepage
     * if param $codepage is null will return actual default codepage from class
     * if param $codepage is 'all' will return a array with all avaiable codepages
     * if param $codepage is a string will set the codepage parameter of class and returns it.
     * NOTE: This command do not set the printer, only class parameters
     * 
     * @param string $codepage
     * @return string|array
     */
    public function defaultCodePage($codepage = null)
    {
        if (!is_null($codepage)) {
            $codepage = strtoupper(trim($codepage));
            if ($codepage == 'ALL') {
                return array_keys($this->aCodePage);
            }
            if (array_key_exists($codepage, $this->aCodePage)) {
                $this->codepage = $codepage;
                $table = $this->aCodePage[$codepage];
                $this->charsetTableNum = $table['table'];
            }
        }
        return $this->codepage;
    }

    /**
     * Set a codepage table in printer.
     *
     * @param string $codepage
     */
    public function setCodePage($codepage = null)
    {
        $codepage = $this->defaultCodePage($codepage);

$codepage is not used, you could remove the assignment.

        $this->buffer->write(self::ESC.'t'.chr($this->charsetTableNum));
    }

    /**
     * Set a region page.
     * The numeric key of array $this->aRegion is the command parameter.
     *
     * @param string $region
     */
    public function setRegionPage($region = null)
    {
        $region = $this->defaultRegionPage($region);
        $mode = array_keys($this->aRegion, $region, true);
        $this->buffer->write(self::ESC.'R'.chr($mode[0]));
    }
    
    /**
     * Returns the default printer font 
     * A - Font A (12 x 24)
     * B - Font B (9 x 17)
     * C - Font C
     * D - Font D
     * E - Font E
     * Special A
     * Special B
     * Default Font A.
     * if param $font is null will return actual default font from class
     * if param $font is 'all' will return a array with all avaiable printer fonts
     * if param $font is a string will set the font parameter of class and returns it.
     * NOTE: This command do not set the printer, only class parameters
     * 
     * @param string $font
     * @return array|string
     */
    public function defaultFont($font = null)
    {
        if (!is_null($font)) {
            $font = strtoupper(trim($font));
            if ($font == 'ALL') {
                //return array
                return $this->aFont;
            }
            //set $this->font
            $fonts = array_flip($this->aFont);
            $keys = array_keys($fonts);
            $reg = array_search($font, $keys, true);
            if ($reg !== false) {
                $this->font = $font;
            }
        }
        return $this->font;
    }
    
    /**
     * Set a printer font 
     * If send a valid font name will set the printer otherelse a default font is selected
     * @param string $font
     */
    public function setFont($font = null)
    {
        $font = $this->defaultFont($font);
        $mode = array_keys($this->aFont, $font, true);
        $this->buffer->write(self::ESC.'M'.chr($mode[0]));
    }

    /**
     * Set emphasys mode on or off.
     */
    public function setBold()
    {
        if ($this->boldMode) {
            $this->boldMode = false;
            $mode = 0;
        } else {
            $this->boldMode = true;
            $mode = 1;
        }
        $this->buffer->write(self::ESC . 'E' . chr($mode));
    }

    /**
     * Set underline mode on or off.
     */
    public function setUnderlined()
    {
        if ($this->underlineMode) {
            $this->underlineMode = false;
            $mode = 0;
        } else {
            $this->underlineMode = true;
            $mode = 1;
        }
        $this->buffer->write(self::ESC . '-' . chr($mode));
    }

    /**
     * Aligns all data in one line to the selected layout in standard mode.
     * L - left  C - center  R - rigth
     * 
     * @param string $align 
     */
    public function setAlign($align = null)
    {
        if (is_null($align)) {
            $align = 'L';
        }
        $value = strtoupper($align);
        switch ($value) {
            case 'C':
               $mode = 1;
               break;
            case 'R':
               $mode = 2;
               break;
            default:
                $mode = 0;
        }
        $this->buffer->write(self::ESC . 'a' . chr($mode));
    }
    
    /**
     * Turns white/black reverse print On or Off for characters.
     * n = odd: On, n = even: Off.
     */
    public function setReverseColors()
    {
        if ($this->reverseColors) {
            $this->reverseColors = false;
            $mode = 0;
        } else {
            $this->reverseColors = true;
            $mode = 1;
        }
        $this->buffer->write(self::GS.'B'.chr($mode));
    }
    
    /**
     * Set expanded mode.
     * @param int $size multiplies normal size 1 - 8 
     */
    public function setExpanded($size = null)
    {
        $size = self::validateInteger($size, 1, 8, 1);
        $aSize = [
            [0, 0],
            [16, 1],
            [32, 2],
            [48, 3],
            [64, 4],
            [80, 5],
            [96, 6],
            [112, 7]
        ];
        $mode = $aSize[$size-1][0] + $aSize[$size-1][1];
        $this->buffer->write(self::ESC.'!'.chr($mode));
    }

    /**
     * Set condensed mode.
     */
    public function setCondensed()
    {
        $this->setExpanded(1);
        $this->setFont('B');
    }
    

    /**
     * Set the printer mode.
     */
    abstract public function setPrintMode($mode = null);

    /**
     * Set rotate 90 degrees.
     */
    public function setRotate90()
    {
        if ($this->rotateMode) {
            $this->rotateMode = false;
            $mode = 0;
        } else {
            $this->rotateMode = true;
            $mode = 1;
        }
        $this->buffer->write(self::ESC.'V'.chr($mode));
    }
    
    /**
     * initialize printer
     * Clears the data in the print buffer and resets the printer modes to 
     * the modes that were in effect when the power was turned on.
     */
    public function initialize()
    {
        $this->buffer->write(self::ESC.'@');
        $this->rotateMode = false;
        $this->defaultCodePage('CP470');
        $this->underlineMode = false;
        $this->boldMode = false;
        $this->printerMode = 'normal';
        $this->font = 'A';
    }
    
    /**
     * Send message or command to buffer
     * when sending commands is not required to convert characters,
     * so the variable may translate by false.
     * 
     * @param string $text
     */
    public function text($text = '')
    {
        $text = $this->translate($text);
        $this->buffer->write($text);
    }

    /**
     * Set horizontal and vertical motion units
     * $horizontal => character spacing 1/x"
     * $vertical => line spacing 1/y".
     *
     * @param int $horizontal
     * @param int $vertical
     */
    public function setSpacing($horizontal = 30, $vertical = 30)
    {
        $horizontal = self::validateInteger($horizontal, 0, 255, 30);
        $vertical = self::validateInteger($vertical, 0, 255, 30);
        $this->buffer->write(self::GS.'P'.chr($horizontal).chr($vertical));
    }

    /**
     * Set right-side character spacing
     * 0 ≤ n ≤ 255 => 1/x".
     * 
     * @param int $value
     */
    public function setCharSpacing($value = 3)
    {
        $value = self::validateInteger($value, 0, 255, 0);
        $this->buffer->write(self::ESC.' '.chr($value));
    }

    /**
     * Line spacing
     * The default is set to zero and 30/180 "
     * any different number of zero will generate multiples of.
     * n  1/180-inch vertical motion
     * normal paragraph 30/180" => 4.23 mm
     * 
     * @param int $paragraph

There is no parameter named $paragraph. Was it maybe removed?

     */
    public function setParagraph($value = 0)
    {  
        $value = self::validateInteger($value, 0, 255, 0);
        $paragraph = ceil($value);
        if ($paragraph == 0) {
            $this->buffer->write(self::ESC.'2');
            return;
        }
        if ($paragraph < 25) {
            $paragraph = 25;
        } elseif ($paragraph > 255) {
            $paragraph = 255;
        }
        $this->buffer->write(self::ESC.'3'.chr($paragraph));
    }

    /**
     * Prints data and feeds paper n lines
     * ESC d n Prints data and feeds paper n lines.
     *
     * @param type $lines
     */
    public function lineFeed($lines = 1)
    {
        $lines = self::validateInteger($lines, 0, 255, 1);
        if ($lines == 1) {
            $this->buffer->write(self::LF);
            return;
        }
        $this->buffer->write(self::ESC.'d'.chr($lines));
    }

    /**
     * Prints data and feeds paper n dots
     * ESC J n Prints data and feeds paper n dots.
     *
     * @param int $dots
     */
    public function dotFeed($dots = 1)
    {
        $dots = self::validateInteger($dots, 0, 80, 0);
        $this->buffer->write(self::ESC.'J'.chr($dots));
    }

    /**
     * Generate a pulse, for opening a cash drawer if one is connected.
     * The default settings should open an Epson drawer.
     *
     * @param int $pin    0 or 1, for pin 2 or pin 5 kick-out connector respectively.
     * @param int $on_ms  pulse ON time, in milliseconds.
     * @param int $off_ms pulse OFF time, in milliseconds.
     */
    public function pulse($pin = 0, $on_ms = 120, $off_ms = 240)
    {
        $pin = self::validateInteger($pin, 0, 1, 0);
        $on_ms = self::validateInteger($on_ms, 1, 511, 120);
        $off_ms = self::validateInteger($off_ms, 1, 511, 240);
        $this->buffer->write(self::ESC.'p'.chr($pin + 48).chr($on_ms / 2).chr($off_ms / 2));
    }

    /**
     * Cut the paper.
     *
     * @param int $mode  FULL or PARTIAL. If not specified, FULL will be used. 
     * @param int $lines Number of lines to feed after cut
     */
    public function cut($mode = 'PARTIAL', $lines = 3)
    {
        $lines = self::validateInteger($lines, 1, 10, 3);
        if ($mode == 'FULL') {
            $mode = self::CUT_FULL;
        } else {
            $mode = self::CUT_PARTIAL;
        }
        $this->buffer->write(self::GS.'V'.chr($mode).chr($lines));
    }

    /**
     * Implements barcodes 1D
     * GS k m n d1...dn
     * Prints bar code. n specifies the data length.
     *   m    bar code system             number of d (=k)
     *  "A"     UPC-A                       11 or 12
     *  "B"     UPC-E                       6, 7, 8, 11 or 12
     *  "C"     JAN13 / EAN13               12 or 13
     *  "D"     JAN8 / EAN8                 7 or 8
     *  "E"     CODE39                      1 or more
     *  "F"     ITF                         even
     *  "G"     CODABAR (NW-7)              2 or more
     *  "H"     CODE93                      1–255
     *  "I"     CODE128                     2–255    
     *  "J"     GS1-128                     2–255    
     *  "K"     GS1 DataBar Omnidirectional 13
     *  "L"     GS1 DataBar Truncated       13
     *  "M"     GS1 DataBar Limited         13
     *  "N"     GS1 DataBar Expanded        2–255.
     * 
     *  GS h n Sets bar code height to n dots.
     *  GS w n Sets bar width of bar code. n = 2–6 (thin–thick)
     *  GS H n Selects print position of HRI characters.
     *           n = 0, "0": Not printed
     *           n = 1, "1": Above the bar code
     *           n = 2, "2": Below the bar code
     *           n = 3, "3": Both above and below the bar code
     *  GS f n Selects font for the HRI characters.
     *           n = 0, "0": Font A,
     *           n = 1, "1": Font B
     *
     * @param int    $type        Default CODE128
     * @param int    $height
     * @param int    $lineWidth
     * @param string $txtPosition
     * @param string $txtFont
     * @param string $data
     */
    public function barcode(
        $type = self::CODE128,
        $height = 162,
        $lineWidth = 2,
        $txtPosition = 'none',
        $txtFont = '',
        $data = '123456'
    ) {
        switch ($txtPosition) {
            case 'Above':
                $tPos = 1;
                break;
            case 'Below':
                $tPos = 2;
                break;
            case 'Both':
                $tPos = 3;
                break;
            default:
                //none
                $tPos = 0;
        }
        $font = 0;
        if ($txtFont === 'B') {
            $font = 1;
        }
        $id = 0;
        if (self::validateBarcodeData($type, $id, $data) === false) {
            return false;
        }
        $height = self::validateInteger($height, 1, 255, 4);
        $lineWidth = self::validateInteger($lineWidth, 1, 6, 2);
        $nlen = strlen($data);
        //set barcode height
        $this->buffer->write(self::GS.'h'.chr($height));
        //set barcode bar width
        $this->buffer->write(self::GS.'w'.chr($lineWidth));
        //Selects print position of HRI characters.
        $this->buffer->write(self::GS.'H'.chr($tPos));
        //Selects font for the HRI characters.
        $this->buffer->write(self::GS.'f'.chr($font));
        //Print barcode
        $this->buffer->write(self::GS.'k'.chr($id).chr($nlen).$data);
    }
    
    /**
     * Imprime o QR Code
     * @param string $data Dados a serem inseridos no QRCode
     * @param string $level Nivel de correção L,M,Q ou H
     * @param int $modelo modelo de QRCode 1, 2 ou 0 Micro
     * @param int $wmod largura da barra 3 ~ 16
     */
    public function barcodeQRCode($data = '', $level = 'L', $modelo = 2, $wmod = 4)
    {
        //set model of QRCode
        $n1 = 50;

Avoid variables with short names like $n1. Configured minimum length is 3.

        if ($modelo == 1) {
            $n1 = 49;
        }
        $this->buffer->write(self::GS."(k".chr(4).chr(0).chr(49).chr(65).chr($n1).chr(0));
        //set module bar width
        $this->buffer->write(self::GS."(k".chr(3).chr(0).chr(49).chr(67).chr($wmod));
        //set error correction level
        $level = strtoupper($level);
        switch ($level) {
            case 'L':
                $n = 48;

Avoid variables with short names like $n. Configured minimum length is 3.

                break;
            case 'M':
                $n = 49;
                break;
            case 'Q':
                $n = 50;
                break;
            case 'H':
                $n = 51;
                break;
            default:
                $n = 49;
        }
        $this->buffer->write(self::GS."(k".chr(3).chr(0).chr(49).chr(69).chr($n));
        //set data for QR Code assuming print only alphanumeric data
        $len = strlen($data) + 3;
        $pH = ($len / 256);

Avoid variables with short names like $pH. Configured minimum length is 3.

        $pL = $len % 256;

Avoid variables with short names like $pL. Configured minimum length is 3.

        $this->buffer->write(self::GS."(k".chr($pL).chr($pH).chr(49).chr(80).chr(48).$data);
        //Print QR Code
        $this->buffer->write(self::GS."(k".chr(3).chr(0).chr(49).chr(81).chr(48));
    }

    /**
     * Close and clean buffer
     * All data will be lost.
     */
    public function close()
    {
        $this->buffer->close();
    }

    /**
     * Return all data buffer.
     *
     * @param string $type specifies the return format
     */
    public function getBuffer($type = '')
    {
        switch ($type) {
            case 'binA':
                //returns a binary array of buffer
                $resp = $this->buffer->getDataBinary(true);
                break;
            case 'binS':
                //returns a binary string of buffer
                $resp = $this->buffer->getDataBinary(false);
                break;
            case 'b64A':
                //returns a base64 encoded array of buffer
                $resp = $this->buffer->getDataBase64(true);
                break;
            case 'b64S':
                //returns a base64 encoded string of buffer
                $resp = $this->buffer->getDataBase64(false);
                break;
            case 'json':
                //returns a json encoded of array buffer
                $resp = $this->buffer->getDataJson();
                break;
            case 'readA':
                //returns a human readable format of array buffer
                //only for debug reasons
                $resp = $this->buffer->getDataReadable(true);
                break;
            default :

There must be no space before the colon in a DEFAULT statement

                //returns a human readable format of string buffer
                //only for debug reasons
                $resp = $this->buffer->getDataReadable(false);
        }
        return $resp;
    }

    /**
     * Send commands from buffer to connector printer.
     */
    public function send(ConnectorInterface $conn = null)
    {
        if (!is_null($conn)) {
            $this->connector = $conn;

It seems like $conn of type object<Posprint\Connectors\ConnectorInterface> is incompatible with the declared type object<Posprint\Printers\ConnectosInterface> of property $connector.

        }
        if (is_null($this->connector)) {
            return $this->getBuffer();
        }
        $aCmds = $this->getBuffer('binA');
        foreach ($aCmds as $cmd) {
            $this->connector->write($cmd);
        }
    }

    /**
     * Checks whether the barcode data is compatible with the chosen model
     * 
     * @param string $type
     * @param int    $id
     * @param string $data
     * @return string 
     */
    protected static function validateBarcodeData($type, &$id, &$data)

The parameter $data is not used and could be removed.

    {
        $aTypes = [
            'A' => ['id' => 65, 'desc' => 'UPC-A', 'len' => '11;12', 'type' => 'N'],
            'B' => ['id' => 66, 'desc' => 'UPC-E', 'len' => '6;7;8;11;12', 'type' => 'N'],
            'C' => ['id' => 67, 'desc' => 'EAN13', 'len' => '12;13', 'type' => 'N'],
            'D' => ['id' => 68, 'desc' => 'EAN8', 'len' => '7;8', 'type' => 'N'],
            'E' => ['id' => 69, 'desc' => 'CODE39', 'len' => '1-', 'type' => 'C'],
            'F' => ['id' => 70, 'desc' => 'ITF (i25)', 'len' => '1-even ', 'type' => 'N'],
            'G' => ['id' => 71, 'desc' => 'CODABAR', 'len' => '2-more', 'type' => 'C'],
            'H' => ['id' => 72, 'desc' => 'CODE93', 'len' => '1-255', 'type' => 'C'],
            'I' => ['id' => 73, 'desc' => 'CODE128', 'len' => '2-255', 'type' => 'C'],
            'J' => ['id' => 74, 'desc' => 'GS1-128', 'len' => '2-255', 'type' => 'C'],
            'K' => ['id' => 75, 'desc' => 'GS1 DataBar Omnidirectional', 'len' => '13', 'type' => 'N'],
            'L' => ['id' => 76, 'desc' => 'GS1 DataBar Truncated', 'len' => '13', 'type' => 'N'],
            'M' => ['id' => 77, 'desc' => 'GS1 DataBar Limited', 'len' => '13', 'type' => 'N'],
            'N' => ['id' => 78, 'desc' => 'GS1 DataBar Expanded', 'len' => '2-255', 'type' => 'C'],
        ];
        if (!array_key_exists($type, $aTypes)) {
            return false;
        }
        $bar = $aTypes[$type];
        $id = $bar['id'];
        $len = $bar['len'];

$len is not used, you could remove the assignment.

        $dtype = $bar['type'];

$dtype is not used, you could remove the assignment.

        //check data type if N only numeric is acceptable and all others chars must be removed
        //and if then field stay is empty, this is must be completed to an acceptable standard value
        
        //check for length of data, if the field length is different from the 
        //acceptable values, it must be adjusted by removing or adding characters
        return true;
    }

    /**
     * Insert a image.
     *
     * @param string $filename Path to image file
     * @param float  $width
     * @param float  $height
     * @throws RuntimeException
     */
    public function putImage($filename = '', $width = null, $height = null)
    {
        try {
            $img = new Graphics($filename, $width, $height);
        } catch (RuntimeException $e) {
            throw new RuntimeException($e->getMessage());
        } catch (InvalidArgumentException $e) {
            throw new RuntimeException($e->getMessage());
        }
        $imgHeader = self::dataHeader(array($img->getWidth(), $img->getHeight()), true);
        $tone = '0';
        $colors = '1';
        $xm = (($size & self::IMG_DOUBLE_WIDTH) == self::IMG_DOUBLE_WIDTH) ? chr(2) : chr(1);

The variable $size does not exist. Did you forget to declare it?

Avoid variables with short names like $xm. Configured minimum length is 3.

        $ym = (($size & self::IMG_DOUBLE_HEIGHT) == self::IMG_DOUBLE_HEIGHT) ? chr(2) : chr(1);

Avoid variables with short names like $ym. Configured minimum length is 3.

        $header = $tone.$xm.$ym.$colors.$imgHeader;
        $this->sendGraphicsData('0', 'p', $header.$img->getRasterImage());
        $this->sendGraphicsData('0', '2');
    }
    
    /**
     * Calculate the size of the word.
     *
     * @param string $data
     */
    protected function getWordLength($data = '')

The parameter $data is not used and could be removed.

    {
        //k = (pL + pH × 256) – 3
        $len = strlen($texto);

The variable $texto does not exist. Did you forget to declare it?

$len is not used, you could remove the assignment.

    }

    /**
     * Generate two characters for a number: 
     * In lower and higher parts, or more parts as needed.
     *
     * @param int $int    Input number

There is no parameter named $int. Was it maybe removed?

     * @param int $length The number of bytes to output (1 - 4).
     */
    protected static function intLowHigh($input, $length)
    {
        $maxInput = (256 << ($length * 8) - 1);

$maxInput is not used, you could remove the assignment.

        $outp = '';
        for ($i = 0; $i < $length; ++$i) {
            $outp .= chr($input % 256);
            $input = (int) ($input / 256);
        }
        return $outp;
    }

    /**
     * Convert widths and heights to characters.
     * Used before sending graphics to set the size.
     *
     * @param array $inputs
     * @param bool  $long   True to use 4 bytes, false to use 2
     * @return string
     */
    protected static function dataHeader(array $inputs, $long = true)
    {
        $outp = array();
        foreach ($inputs as $input) {
            if ($long) {
                $outp[] = self::intLowHigh($input, 2);
            } else {
                self::validateInteger($input, 0, 255, __FUNCTION__);
                $outp[] = chr($input);
            }
        }
        return implode('', $outp);
    }

    /**
     * Verify if the argument given is not a boolean.
     * 
     * @param bool   $test   the input to test
     * @param bool    $default the default value
     * @return bool 
     */
    protected static function validateBoolean($test, $default)
    {
        if (!($test === true || $test === false)) {
            return $default;
        }
        return $test;
    }

    /**
     * Verify if the argument given is not an integer within the specified range.
     * will return default instead
     * 
     * @param int    $test    the input to test
     * @param int    $min     the minimum allowable value (inclusive)
     * @param int    $max     the maximum allowable value (inclusive)
     * @param int    $default the default value
     * @return int
     */
    protected static function validateInteger($test, $min, $max, $default)
    {
        if (!is_integer($test) || $test < $min || $test > $max) {
            return $default;
        }
        return $test;
    }

    /**
     * Verify if the argument given can't be cast to a string.
     *
     * @param string $test    the input to test
     * @param string $default the default value
     * @return string
     */
    protected static function validateString($test, $default)
    {
        if (is_object($test) && !method_exists($test, '__toString')) {
            return $default;
        }
        return $test;
    }
    
    /**
     * Translate the text from UTF-8 for the specified codepage
     * this translation uses "iconv" and admits texts ONLY in UTF-8.
     *
     * @param string $text
     * @return string
     */
    protected function translate($text = '')
    {
        $indCode = $this->defaultCodePage();
        if (!empty($indCode)) {
            $codep = $this->aCodePage[$indCode];
            if (!empty($codep)) {
                $text = iconv('UTF-8', $codep['conv'], $text);
            }
        }
        return $text;
    }
    
    /**
     * Wrapper for GS ( L, to calculate and send correct data length.
     *
     * @param string $m    Modifier/variant for function. Usually '0'.
     * @param string $fn   Function number to use, as character.
     * @param string $data Data to send.
     *
     * @throws InvalidArgumentException Where the input lengths are bad.
     */
    private function sendGraphicsData($m, $fn, $data = '')

Avoid variables with short names like $m. Configured minimum length is 3.

Avoid variables with short names like $fn. Configured minimum length is 3.

    {
        if (strlen($m) != 1 || strlen($fn) != 1) {
            throw new InvalidArgumentException('wrapperSendGraphicsData: m and fn must be one character each.');
        }
        $header = $this->intLowHigh(strlen($data) + 2, 2);
        $this->buffer->write(self::GS.'(L'.$header.$m.$fn.$data);
    }
}