封装文件操作类

CMakeLists.txt

@@ -3,4 +3,4 @@ project(cpp_14_file)
 
 set(CMAKE_CXX_STANDARD 11)
 
-add_executable(cpp_14_file main.cpp)
+add_executable(cpp_14_file main.cpp fileReadWrite.cpp fileReadWrite.h)

fileReadWrite.cpp

+//
+// Created by 11010 on 2023/4/9.
+//
+
+#include "fileReadWrite.h"
+#include "io.h"
+
+//空构造方法
+fileReadWrite::fileReadWrite() {
+    this->filePath = "";
+    cout << "路径为空,请设置文件路径" << endl;
+}
+
+fileReadWrite::fileReadWrite(string path) : filePath(path) {
+    if (path.length() == 0) cout << "文件路径为空！";
+}
+
+fileReadWrite::fileReadWrite(string path, ofstream *writeStream) :
+        filePath(path), writeStream(writeStream) {
+    if (path.length() == 0) cout << "文件路径为空！";
+
+
+}
+
+fileReadWrite::fileReadWrite(string path, ofstream *writeStream, ifstream *readStream) :
+        filePath(path), writeStream(writeStream), readStream(readStream) {
+    if (path.length() == 0) cout << "文件路径为空！";
+}
+
+void fileReadWrite::openFile(fileReadWrite::model model, bool display) {
+    char  c[100];  //保存控制台输入，最大字数不超过100个
+
+    //路径为空，给出提示结束函数运行
+    if (filePath.empty()) {
+        cout << "文件路径为空！" << endl;
+        return;
+    }
+
+    if (writeStream == nullptr){
+        cout << "写入对象为空，没有被初始化！" << endl;
+        return;
+    }
+
+    if (readStream == nullptr){
+        cout << "读取对象为空，没有被初始化！" << endl;
+        return;
+    }
+
+    if (ReadWriteStream == nullptr){
+        cout << "读写对象为空，没有被初始化！" << endl;
+        return;
+    }
+
+    switch (model) {
+        //如果是写文件
+        case write:
+            writeStream->open(filePath, ios::app); //所有文件读追加到末尾
+            //从控制台接收数据，敲击回车键结束输入
+            cout<<"请输入要保存到文中的名字，不超过100个字符，按下回车键结束输入！"<<endl;
+            cin.getline(c,100); //接收输入
+            //把输入的字符写入到文件中
+            writeStream->write(c,100);
+
+            //判断是显示到屏幕还是写入到文件
+            if (display) {
+                cout<<"你输入的数据为："<<endl;
+                cout<<c<<endl;
+            }
+            break;
+
+            //如果是读文件
+        case read:
+            writeStream->open(filePath, ios::in); //读模式打开
+            //把输入的字符写入到文件中
+            readStream->read(c,100); //最大读取100个字符，并存储在char数组中
+            cout<<"读取的文件完毕！："<<endl;
+            //判断是显示到屏幕还是写入到文件
+            if (display) {
+                cout<<"读取的文件内容如下："<<endl;
+                cout<<c<<endl;
+            }
+            break;
+
+            //如果是读写文件
+        case readWrite:
+            int flag;
+            cout<<"请输入文件的操作模式，输入0代表写，输入1代表读"<<endl;
+            cin>>flag;
+
+            if (flag==0){
+                //写入文件
+                ReadWriteStream->open(filePath,ios::app);
+                //从控制台接收数据，敲击回车键结束输入
+                cout<<"请输入要保存到文中的名字，不超过100个字符，按下回车键结束输入！"<<endl;
+                cin.getline(c,100); //接收输入
+                //把输入的字符写入到文件中
+                ReadWriteStream->write(c,100);
+                cout<<"写入文件完成，你写入的内容是："<<c<<endl;
+
+            }
+            else if (flag==1){
+                //开始读取
+                ReadWriteStream->open(filePath, ios::in); //读模式打开
+                //把输入的字符写入到文件中
+                ReadWriteStream->read(c,100); //最大读取100个字符，并存储在char数组中
+                cout<<"读取的文件完毕，内容为："<<c<<endl;
+            } else{
+                cout<<"你输入有误，程序结束！"<<endl;
+            }
+
+            break;
+    }
+}
+
+
+//关闭文件对象的方法
+void fileReadWrite::close() {
+    //只要读写对象不为空，则调用close方法释放对象
+    if (writeStream != nullptr) writeStream->close();
+    if (readStream != nullptr) readStream->close();
+}
+
+fileReadWrite::fileReadWrite(string path, ofstream *writeStream, ifstream *readStream, fstream *ReadWriteStream) :
+        filePath(path), writeStream(writeStream), readStream(readStream),ReadWriteStream(ReadWriteStream)
+{
+
+}

fileReadWrite.h

+//
+// Created by 11010 on 2023/4/9.
+//
+
+#ifndef CPP_14_FILE_FILEREADWRITE_H
+#define CPP_14_FILE_FILEREADWRITE_H
+
+#include "iostream"
+#include "string"
+#include <fstream>  //操作文件的头文件
+
+using namespace std;
+
+//文件的读取与写入
+class fileReadWrite {
+public:
+    string filePath;  //文件路径
+
+    enum model {
+        read, write, readWrite
+    } model1;  //读写模式枚举
+
+    bool display = false; //是否把数据显示到屏幕
+
+    ofstream *writeStream= nullptr;  //写文件对象
+    ifstream *readStream= nullptr;   //读文件对象
+    fstream *ReadWriteStream= nullptr; //读写文件
+
+    fileReadWrite();
+
+    fileReadWrite(string path);
+    fileReadWrite(string path,ofstream *writeStream);
+    fileReadWrite(string path,ofstream *writeStream,ifstream *readStream);
+    fileReadWrite(string path,ofstream *writeStream,ifstream *readStream,fstream *ReadWriteStream);
+
+    void openFile(model model, bool display);  //打开文件,参数的含义是选择文件的操作模式、文件内容输出目的地
+    void close(); //关闭文件
+};
+
+
+#endif //CPP_14_FILE_FILEREADWRITE_H