从其他地方调用程序时文件的间接路径 [英] Indirect Path to Files, when program is called from somewhere else

问题描述

我的C ++控制台程序有问题.我需要一些词典文件来进行某些翻译.因此，我在程序中读取了这些文件，并给了它们一个指向程序文件夹的间接路径.

I have a problem with my C++ console program. I need some dictionary files for some translations. So I read this Files in the program and gave them a indirect path to the program folder.

String="translation\\PfadzuDatei\\Datei.txt";

在Debugging-Mode(调试模式)下，它非常有用，因为VS在正确的目录中启动程序，但是当我释放它时，它会从其他地方调用，例如:

In Debugging-Mode this works great, because VS starts the program in the right directory, but when i release it, and it is called from somewhere else like:

Path of Program: c:\Program.exe

我从另一个位置开始:

C:\anyPathInConsole\>c:\Program.exe arg1

程序无法找到翻译文件.

The program is not able to find the translation files.

是否还有其他可能性以其他方式设置文件的路径，还是我必须从C:\

Is there any other possibility to set the Path to the files in other ways or do i have to call the program from C:\

从特定文件夹调用程序的问题是，该程序是由nodejs"Child-Prozess"执行函数启动的，而我不知道正在执行的路径.

The problem with calling the program from the specific folder is, that the program is started by a nodejs "Child-Prozess" exec function and i don`t know the executing Path.

推荐答案

我不知道作者使用的是哪种操作系统，我假设使用Windows.您可以通过将* .exe的路径和相对文件路径串联起来来获取文件的绝对路径:

I do not know what operating system the author uses, I will assume that windows. You can get the absolute path to the file by concatenating path to *.exe and relative file path:

std::string getPath()
{
   char buf[256];
   // Get file name
   GetModuleFileNameA(nullptr, &buf[0], sizeof(buf));

   // Extract path from full name
   std::string path = buf;
   const size_t last_slash_idx = path.rfind('\\');
   if (std::string::npos != last_slash_idx)
   {
      path = path.substr(0, last_slash_idx);
   }
   // Add relative path
   path += "\\";
   path += "translation\\PfadzuDatei\\Datei.txt";
   return path;
}

对于lixux，可以使用readlink("/proc/self/exe", buf, sizeof(buf));代替GetModuleFileNameA

For lixux readlink("/proc/self/exe", buf, sizeof(buf)); can be used instead GetModuleFileNameA

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