c ++中的目录问题。

时间:2012-11-06 01:32:12

标签: c++ directory

我正在制作一个程序,但我遇到了一些直接发生事情的问题。

基本上,该程序旨在为用户提供程序列表,一旦用户选择该程序,则向用户提供具有相关扩展名的所有文件的列表。选择文件后,它将使用所需的程序打开文件。我现在的问题是我的启动程序和我的扫描程序似乎在两个单独的目录中运行。现在我只需要在桌面上包含该程序的文件夹。当它运行时,它会搜索文件夹,但是当打开文件时,它会尝试从同一文件夹的子文件夹目录中打开它们。我认为问题在于搜索,因为当我将.exe复制到另一个位置时,例如桌面,如果在我的文档中恰好有一个匹配名称的文件,它将从桌面打开文件夹。但是,如果桌面上没有匹配的文件,它将无法打开。

以下是我现在的代码:

#include <iostream>
#include <filesystem>
#include <vector>
#include <string>
#include <algorithm>
#include <fstream>
#include <Windows.h>
using namespace std;
using namespace std::tr2::sys;


bool ends_with(std::string& file, std::string& ext)
{
    return file.size() >= ext.size() && // file must be at least as long as ext
    // check strings are equal starting at the end
    std::equal(ext.rbegin(), ext.rend(), file.rbegin());
}

void wScan( path f, unsigned i = 0 )
{
directory_iterator d( f );
directory_iterator e;
vector<string>::iterator it2;
std::vector<string> extMatch;

//iterate through all files
for( ; d != e; ++d )
{
    string file = d->path();
    string ext = ".docx";
    //populate vector with matching extensions
    if(ends_with(file, ext))
    {
        extMatch.push_back(file);
    }

}
//counter to appear next to file names
int preI = -1;
//display all matching file names and their counter
for(it2 = extMatch.begin(); it2 != extMatch.end(); it2++)
{
    preI += 1;
    cout << preI << ". " << *it2 << endl;
}
//ask for file selection and assign choice to fSelection
cout << "Enter the number of your choice (or quit): ";
int fSelection;
cin >> fSelection;

cout << extMatch[fSelection] << endl;

//assign the selected file to a string, launch it based on that string and record and output time
    string s = extMatch[fSelection];
    unsigned long long start = ::GetTickCount64();
    system(s.c_str());
    unsigned long long stop = ::GetTickCount64();
    double elapsedTime = (stop-start)/1000.0;
    cout << "Time: " << elapsedTime << " seconds\n";

}


int main()
{

string selection;
cout << "0. Microsoft word \n1. Microsoft Excel \n2. Visual Studio 11 \n3. 7Zip \n4. Notepad \n Enter the number of your choice (or quit): ";

cin >> selection;

path folder = "..";

    if (selection == "0")
{
    wScan ( folder );
}
    else if (selection == "1")
{
    eScan ( folder );
}
    else if (selection == "2")
{
    vScan ( folder );
}
    else if (selection == "3")
{
    zScan ( folder );
}
    else if (selection == "4")
{
    tScan ( folder );
}
}

提前感谢您提供给我的任何建议。

1 个答案:

答案 0 :(得分:0)

如果目录不是当前目录,则必须在文件名之前添加目录路径,以便访问目录中的文件。

假设程序在C:/top-level中运行;假设检查的目录是C:/another-one。当目录迭代器返回somefile.docx时,您需要使用C:/another-one/somefile.docx来访问该文件。