visual-c++ - 如何使用 boost 和 Visual Studio 2005 复制文件和文件夹？

Question

我正在尝试使用 boost::filesystem 来复制文件和文件夹（就像标准复制文件夹并将其粘贴到 Windows 资源管理器中一样）。

虽然我去过boost::filesystem 文档，但我仍然不知道如何去做。

您是否必须递归地遍历每个目录（创建它）并找到复制它的每个文件？

此外，如何在 C++/Boost 中复制文件？

PS我正在使用Boost 1.40.0

更新 我想我最终可能已经为这个问题创建了一个答案，唯一关心的是我没有做任何尝试捕获错误来检查锁定的文件和文件夹。

以下代码在相对路径“../example/ecomm”中复制目录并将其复制到不存在的路径“../example/dup_ecomm”：

#include <boost/test/unit_test.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/regex.hpp>
#include <iostream>
#include <fstream>
#include<string>

bool copy_dir( const boost::filesystem::path & ext_dir_path,         // the existing directory
               const boost::filesystem::path & duplicate_dir_path    // the duplicate directory
             )
{
  std::cout << "BEGIN: copy_dir " << endl;
  std::cout << "- ext_dir_path: " << ext_dir_path << endl;
  std::cout << "- duplicate_dir_path: " << duplicate_dir_path << endl;

  // 1. Ensure that the directory we are trying to copy exists.
  if (!boost::filesystem::exists( ext_dir_path ) ) return false;

  bool createdDir = boost::filesystem::create_directory( duplicate_dir_path );

  // cout << "createdDir: " << createdDir << endl;


  copy_dir(ext_dir_path,         // the existing directory
           duplicate_dir_path,   // the duplicate directory,
           ext_dir_path,    // the base path for the existing directory
           duplicate_dir_path,
           true);

  std::cout << "END: copy_dir " << endl;
}


bool copy_dir( const boost::filesystem::path & ext_dir_path,         // the existing directory
               const boost::filesystem::path & duplicate_dir_path,   // the duplicate directory,
               const boost::filesystem::path & base_ext_dir_path,    // the base path for the existing directory
               const boost::filesystem::path & base_duplicate_dir_path, // the base path for the duplicate of the exisiting directory
               bool isRootPath)
{
  // Debug input arguments
  std::cout << "BEGIN: copy_dir " << endl;
  std::cout << "- ext_dir_path: " << ext_dir_path << endl;
  std::cout << "- duplicate_dir_path: " << duplicate_dir_path << endl;
  std::cout << "- base_ext_dir_path: " << base_ext_dir_path << endl;
  std::cout << "- base_duplicate_dir_path: " << base_duplicate_dir_path << endl;
  std::cout << "- isRootPath: " << isRootPath << endl;

  boost::filesystem::directory_iterator end_itr; // default construction yields past-the-end

  cout << "--Beginning itr loop" << endl;
  for ( boost::filesystem::directory_iterator itr( ext_dir_path );
        itr != end_itr;
        ++itr )
  {

    if ( boost::filesystem::is_directory(itr->status()) )
    {
     cout << "---itr->path(): " << itr->path() << endl;


     boost::filesystem::path newExtDir(itr->path());

     string dup_path = itr->path().string();
     boost::algorithm::replace_first(dup_path, base_ext_dir_path.string(), base_duplicate_dir_path.string());
     cout << "dup_path: " << dup_path << endl;

     boost::filesystem::path new_dup_dir(dup_path);

     bool createdDir = boost::filesystem::create_directory( new_dup_dir );

     cout << "creating directory " << dup_path << " created: " << createdDir << endl;

     boost::filesystem::path newDuplicateDir(duplicate_dir_path);

     copy_dir(newExtDir,         // the existing directory
          newDuplicateDir,   // the duplicate directory,
          base_ext_dir_path,
          base_duplicate_dir_path,
          false);
    }
    else 
    {
            cout << "---isLeaf: " << itr->path() << endl;

        string dup_path = itr->path().string();

        boost::algorithm::replace_first(dup_path, base_ext_dir_path.string(), base_duplicate_dir_path.string());

        string src_path = itr->path().string();

        cout << "src_path: " << src_path << endl;
        cout << "dup_path: " << dup_path << endl;

        boost::filesystem::path s_path(src_path);
        boost::filesystem::path d_path(dup_path);

        boost::filesystem::copy_file(s_path, d_path);
    }

  }
  std::cout << "--Ending itr loop" << endl;


  std::cout << "END: copy_dir " << endl;

  return false;
}

test_suite*
init_unit_test_suite( int, char* [] ) {

    boost::filesystem::path ext_dir("..\\example\\ecomm");
    boost::filesystem::path dir_dup("..\\example\\dup_ecomm");

    copy_dir(ext_dir,
             dir_dup);   // the duplicate directory,

        // ... unit tests...etc...
}

我现在的问题是关于锁定的文件和目录我忘记做什么了？

Answer 1

boost::filesystem::recursive_directory_iterator