<?php
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namespace app\common\library\printer;
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use app\common\exception\BaseException;
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use app\common\enum\settings\PrinterTypeEnum;
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/**
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* 小票打印机驱动
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*/
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class Driver
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{
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private $printer; // 当前打印机
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private $engine; // 当前打印机引擎类
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// 打印机引擎列表
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private static $engineList = [
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PrinterTypeEnum::FEI_E_YUN => 'Feie',
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PrinterTypeEnum::PRINT_CENTER => 'PrintCenter',
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];
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/**
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* 构造方法
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*/
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public function __construct($printer)
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{
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// 当前打印机
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$this->printer = $printer;
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// 实例化当前打印机引擎
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$this->engine = $this->getEngineClass();
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}
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/**
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* 执行打印请求
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*/
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public function printTicket($content)
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{
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return $this->engine->printTicket($content);
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}
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/**
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* 获取错误信息
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*/
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public function getError()
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{
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return $this->engine->getError();
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}
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/**
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* 获取当前的打印机引擎类
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*/
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private function getEngineClass()
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{
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$engineName = self::$engineList[$this->printer['printer_type']['value']];
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$classSpace = __NAMESPACE__ . "\\engine\\{$engineName}";
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if (!class_exists($classSpace)) {
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throw new BaseException("未找到打印机引擎类: {$engineName}");
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}
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return new $classSpace($this->printer['printer_config'], $this->printer['print_times']);
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}
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}
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