94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/*
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* @Description:
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* @version:
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* @Author: 莫邪
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* @Date: 2023-11-01 09:28:07
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* @LastEditors: 莫邪
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* @LastEditTime: 2023-11-01 10:08:18
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*/
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#include <iostream>
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#include <memory>
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using namespace std;
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// 继承重写
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class ReaderAbstraction {
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std::string file_path_;
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public:
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ReaderAbstraction(std::string file_path) : file_path_(file_path) {}
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virtual void ContentToTxt() = 0;
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};
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//PDF、PPT、Word
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class PDFReader : public ReaderAbstraction {
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public:
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PDFReader(std::string file_path) : ReaderAbstraction(file_path) {}
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void ContentToTxt() override { std::cout << "PDF to txt" << std::endl; }
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};
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class PPTReader : public ReaderAbstraction {
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public:
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PPTReader(std::string file_path) : ReaderAbstraction(file_path) {}
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void ContentToTxt() override { std::cout << "PPT to txt" << std::endl; }
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};
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class WordReader : public ReaderAbstraction {
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public:
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WordReader(std::string file_path) : ReaderAbstraction(file_path) {}
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void ContentToTxt() override { std::cout << "Word to txt" << std::endl; }
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};
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//工厂
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class ReaderFactory {
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public:
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static std::shared_ptr<ReaderAbstraction> CreateReader(const std::string &type,
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const std::string &file_path) {
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if (type == "PDF") {
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return std::make_shared<PDFReader>(file_path);
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} else if (type == "PPT") {
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return std::make_shared<PPTReader>(file_path);
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} else if (type == "Word") {
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return std::make_shared<WordReader>(file_path);
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}
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return nullptr;
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}
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};
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// 访问者模式
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class Visitor ;
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class FileAbstraction {
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std::string file_path_;
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public:
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FileAbstraction(const std::string &file_path) : file_path_(file_path) {}
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std::string& FilePath() { return file_path_; }
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virtual void Accept(Visitor &visitor) = 0;
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};
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class PDFFile : public FileAbstraction {
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public:
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PDFFile(const std::string &file_path) : FileAbstraction(file_path) {}
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void Accept(Visitor &visitor) override;
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};
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class PPTFile : public FileAbstraction {
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public:
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PPTFile(const std::string &file_path) : FileAbstraction(file_path) {}
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void Accept(Visitor &visitor) override;
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};
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class WordFile : public FileAbstraction {
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public:
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WordFile(const std::string &file_path) : FileAbstraction(file_path) {}
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void Accept(Visitor &visitor) override;
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};
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class Visitor {
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public:
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virtual void VisitPDFFile(PDFFile &file) {};
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virtual void VisitPPTFile(PPTFile &file) {};
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virtual void VisitWordFile(WordFile &file) {};
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};
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//阅读
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class ReaderVisitor : public Visitor {
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public:
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void VisitPDFFile(PDFFile &file) override;
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void VisitPPTFile(PPTFile &file) override;
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void VisitWordFile(WordFile &file) override;
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};
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//压缩
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class CompressorVisitor : public Visitor {
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public:
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void VisitPDFFile(PDFFile &file) override;
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void VisitPPTFile(PPTFile &file) override;
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void VisitWordFile(WordFile &file) override;
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}; |