C++：文本内容复制

最新推荐文章于 2024-12-21 10:42:31 发布

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这是一个C++类，用于复制文件。类`copyFile`包含了源文件和目标文件的路径，以及相关的方法来读取源文件并写入目标文件。在主函数中，用户输入源文件和目标文件的路径，然后类的实例会执行文件复制操作。

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/**

* 头文件

**/

#ifndef __COPYFILE__
#define __COPYFILE__
#define LEN 256
class copyFile{
public:
  copyFile(const char *src = NULL, const char *dest = NULL);
  copyFile(const copyFile &myObject);
  copyFile & operator = (const copyFile &myObejct);

  ~copyFile(void);

  void copy2File();

private:
  char *pSrc;
  char *pDest;
  FILE *srcFile;
  FILE *destFile;

  int ch;
};

#endif

/**

* 源文件

**/

#include "iostream"
#include "copyFile++.h"

using namespace std;

copyFile::copyFile(const char *src, const char *dest){
ch = 0;
srcFile = NULL;
destFile = NULL;

if (src == NULL || dest == NULL) {
  pSrc = new char[1];
  pDest = new char[1];
  if (pSrc == NULL || pDest == NULL) {
   cout << "Memorry fail!" << endl;
   exit(1);
  }

  *pSrc = '\0';
  *pDest = '\0';
}
else {
  int srcLen = strlen(src) + 1;
  int destLen = strlen(dest) + 1;

  pSrc = new char[srcLen];
  pDest = new char[destLen];
  if (pSrc == NULL || pDest == NULL) {
   cout << "Memorry fail!" << endl;
   exit(1);
  }

  strcpy(pSrc, src);
  strcpy(pDest, dest);
}
}

copyFile::~copyFile(void){
delete []pSrc;
delete []pDest;
}

copyFile::copyFile(const copyFile &myObject) {
int srcLen = strlen(myObject.pSrc) + 1;
int destLen = strlen(myObject.pDest) + 1;

pSrc = new char[srcLen];
pDest = new char[destLen];
if (pSrc == NULL || pDest == NULL) {
  cout << "Memorry fail!" << endl;
  exit(1);
}

strcpy(pSrc, myObject.pSrc);
strcpy(pDest, myObject.pDest);
}

copyFile &copyFile::operator=(const copyFile &myObject) {
if (this == &myObject) {
  return *this;
}

delete []pSrc;
delete []pDest;

int srcLen = strlen(myObject.pSrc) + 1;
int destLen = strlen(myObject.pDest) + 1;

pSrc = new char[srcLen];
pDest = new char[destLen];
if (pSrc == NULL || pDest == NULL) {
  cout << "Memorry fail!" << endl;
  exit(1);
}

strcpy(pSrc, myObject.pSrc);
strcpy(pDest, myObject.pDest);

return *this;
}

void copyFile::copy2File() {
if ((srcFile = fopen(pSrc, "r")) == NULL) {
  cout << "Can not open source file:" << pSrc << endl;
}
else {
  if ((destFile = fopen(pDest, "w")) == NULL) {
   cout << "Can not open source file:" << pDest << endl;
   fclose(srcFile);
  }
  else {
   while ((ch = fgetc(srcFile)) != EOF)
    fputc(ch, destFile);

    cout << "Can open source file\"" << pSrc << "\"" << endl;
    cout << "Can open source file\"" << pDest << "\"" << endl;

    cout << "Successful to copy a file!\n";
    fclose(srcFile);
    fclose(destFile);
  }
}
}

int main(int argc, char *argv[]) {
char srcPath[LEN];
char destPath[LEN];

cout << "Please input the srcAddre:" ;
cin >> srcPath;
cout << "Please input the destAddre:" ;
cin >> destPath;

copyFile *pFile = new copyFile(srcPath, destPath);

pFile->copy2File();

delete pFile;
pFile = NULL;

system("pause");

return 1;
}