将目录A的内容复制到目录B [英] copy contents of directory A to directory B

问题描述

我想将目录A的内容复制到目录B(所有子目录和文件).是否有一个简单的语句可以做到这一点?我在Google上搜索了"copydir"(似乎是个不错的猜测)，但没有得到任何看起来像是直接答案的东西.谢谢.

I''d like to copy the contents of directory A to directory B (all sub-directories and files). Is there a simple statement that will do this? I have googled "copydir" (seemed like a good guess) but didn''t get anything that looked like a straight answer. Thanks.

推荐答案

我认为，缺少帮助程序功能，您将不得不逐个处理文件.

值得庆幸的是，CP上有一个辅助功能:):
无需使用SHFileOperation复制，移动和删除文件和目录 [

I think, short of a helper function, you''d have to go one-by-one on the files.

Thankfully, there''s a helper function here on CP :) :
Copy, Move and Delete files and directories without using SHFileOperation[^]

Cheers.

看看 SHFileOperation [ ^ ]/ IFileOperation [ ^ ]

那很容易:

Thats easy:

#pragma once
#include <stdio.h>
#include <tchar.h>
#include <windows.h>


// this: WalkFs
class vWalkFs
{
public: // vWalkFs
  virtual int  Enter(const TCHAR* full,WIN32_FIND_DATA* fd) = 0;
  virtual int  Leave(const TCHAR* full,WIN32_FIND_DATA* fd) = 0;

};

unsigned int scopy(TCHAR* dst,const unsigned int cbdst,const unsigned int pos,const TCHAR* src)
{
  unsigned int  ix,len = _tcslen(src);
  if((pos+len)<cbdst)
  {
    for(ix=0;ix<len;ix++) dst[pos+ix]=src[ix]; dst[pos+ix]=0;
    return pos+len;
  }
  return 0;
}

static void __WalkFs(TCHAR* path,const unsigned int cb,const unsigned int plen,vWalkFs& walk)
{
  typedef struct
  {
    static inline int isdir(WIN32_FIND_DATA& fd)
    {
      return FILE_ATTRIBUTE_DIRECTORY & fd.dwFileAttributes;
    }
    static inline int isvalid(WIN32_FIND_DATA& fd)
    {
      if(!(FILE_ATTRIBUTE_DIRECTORY & fd.dwFileAttributes)) return 2;
      if('.'!=fd.cFileName[0]) return 1;
      if(0==fd.cFileName[1]) return 0; 
      if('.'!=fd.cFileName[1]) return 1; 
      if(0==fd.cFileName[2]) return 0; 
      return 1;
    }
  }_;

  WIN32_FIND_DATA  fd;
  HANDLE          hf;
  unsigned int    flen;

  scopy(path,cb,plen,__TEXT("\\*.*"));
  hf = FindFirstFile(path,&fd);
  if(INVALID_HANDLE_VALUE!=hf)
  {
    do
    {
      if(  _::isvalid(fd) )
      {
        flen = scopy(path,cb,plen+1,fd.cFileName);
        if(walk.Enter(path,&fd))
        {
          if(_::isdir(fd)) __WalkFs(path,cb,flen,walk);
          walk.Leave(path,&fd);
        }
      }
    } while(FindNextFile(hf,&fd));
    FindClose(hf);
  }
  path[plen] = 0;
}

void WalkFs(vWalkFs& walk,const TCHAR* path)
{
  TCHAR          full[_MAX_PATH+_MAX_FNAME+0x400];
  unsigned int  cbf = sizeof(full)/sizeof(full[0]);
  unsigned int  flen = scopy(full,cbf,0,path);
  if(flen && ('\\'==full[flen-1])) --flen;
  __WalkFs(full,cbf,flen,walk);
}


////////////////////////
// main
int _tmain(int argc, _TCHAR* argv[])
{
  TCHAR    src[0x1000];
  if(2<argc)
  {
    class w : public vWalkFs
    {
    public: // vWalkFs
      virtual int  Enter(const TCHAR* full,WIN32_FIND_DATA* fd)
      {
        scopy(dst,sizeof(dst)/sizeof(dst[0]),len,full+rel);
        if(FILE_ATTRIBUTE_DIRECTORY & fd->dwFileAttributes)
        {
          CreateDirectory(dst,0);
        }
        else
        {
          _tprintf(__TEXT("copy: %s -> %s\r\n"),full,dst);
          CopyFile(full,dst,0);
        }
        return 1;
      }
      virtual int  Leave(const TCHAR* full,WIN32_FIND_DATA* fd)
      {
        return 1;
      }
    public:
      w(const TCHAR* path)
      {
        len = scopy(dst,sizeof(dst)/sizeof(dst[0]),0,path);
        rel = 0;
        CreateDirectory(dst,0);
      }
      TCHAR          dst[0x1000];
      unsigned int  len;
      unsigned int  rel;
    }  walk(argv[2]);

    walk.rel = scopy(src,sizeof(src)/sizeof(src[0]),0,argv[1]);
    WalkFs(walk,src);
    _tprintf(__TEXT("<key>")); _gettch();

  }
  return 0;
}

祝你好运.

Good luck.

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