如何创建在C临时目录？ [英] How to create a temporary directory in C?

问题描述

我想创建一个临时目录，在它执行某些操作，然后删除整个事情的结束。我用C语言在UNIX系统上，所以我想有一些符合这个环境。

I am trying to create a temporary directory to perform some operations in it and then delete the whole thing at the end. I use C language in a UNIX system, so I would like to have some compliance with this environment.

什么是编程最好的方法？

What is the best way to program this ?

修改
我真的需要一个目录，不仅是一个文件。这种小程序的目的是尝试，如果我能SVN项目的结账执行。因此，它应该能够创建文件和目录的全部层次。

EDIT I really need a directory, not only a file. The small program is intended to try out if I can perform an svn checkout of a project. So, it should be able to create a full hierarchy of files and directories.

推荐答案

我建议从C API常用功能一起使用 mkdtemp（）函数（的glibc ）。这是一个完整的答案：

I suggest to use the mkdtemp() function together with usual functions from the C API (glibc). Here is a full answer:

#define  _POSIX_C_SOURCE 200809L

#include <stdlib.h>
#include <unistd.h>

#include <errno.h>
#include <string.h>

int
main ()
{
  /* Create the temporary directory */
  char template[] = "/tmp/tmpdir.XXXXXX";
  char *tmp_dirname = mkdtemp (template);

  if(tmp_dirname == NULL)
  {
     perror ("tempdir: error: Could not create tmp directory");
     exit (EXIT_FAILURE);
  }

  /* Change directory */
  if (chdir (tmp_dirname) == -1)
  {
     perror ("tempdir: error: ");
     exit (EXIT_FAILURE);
  }

  /******************************/
  /***** Do your stuff here *****/
  /******************************/

  /* Delete the temporary directory */
  char rm_command[26];

  strncpy (rm_command, "rm -rf ", 7 + 1);
  strncat (rm_command, tmp_dirname, strlen (tmp_dirname) + 1);

  if (system (rm_command) == -1)
  {
     perror ("tempdir: error: ");
     exit (EXIT_FAILURE);
  }

  return EXIT_SUCCESS;
}

这篇关于如何创建在C临时目录？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！