Re: [boost] [filesystem] scoped_file feature request?

Subject: Re: [boost] [filesystem] scoped_file feature request?
From: Jorge Lodos Vigil (lodos_at_[hidden])
Date: 2011-10-12 14:02:48

Beman Dawes wrote:

>
> If you guys can come up with a good design for a temporary file
> feature, implement and test it, and provide at lease a sketch of some
> docs, I'd be happy to add it to the library. But I need to spend my
> time on other aspects of the library.
>
> One feature I've used a lot is the ability to not actually delete the
> file (or directory - I often need temporary directories). When I'm
> tracking down a bug it is often helpful to retain the file so it can
> be inspected. That also implies knowing the path to the file.

Is the following "good design"?

// The same as unique_path except that an empty file is created.
path unique_file(const path& model="%%%%-%%%%-%%%%-%%%%") throws(...);
path unique_file(const path& model, system::error_code& ec);
path unique_file(const path& model="%%%%-%%%%-%%%%-%%%%", const path& parent_path) throws(...);
path unique_file(const path& model, const path& parent_path, system::error_code& ec);

// Unique directories are created
path unique_directory(const path& model="%%%%-%%%%-%%%%-%%%%") throws(...);
path unique_directory(const path& model, system::error_code& ec);
path unique_directory(const path& model="%%%%-%%%%-%%%%-%%%%", const path& parent_path) throws(...);
path unique_directory(const path& model, const path& parent_path, system::error_code& ec);

struct temporary_file
{
  // Uses unique_file. If delete_on_destruction is false you better go with the stand alone function 
  temporary_file(const path& model="%%%%-%%%%-%%%%-%%%%", const path& parent_path = temp_directory_path(), bool delete_on_destruction = true) throws(...);

  const path& path() const; 
};

struct temporary_directory
{
  // Uses unique_directory. If delete_on_destruction is false you better go with the stand alone function 
  temporary_directory(const path& model="%%%%-%%%%-%%%%-%%%%", const path& parent_path = temp_directory_path(), bool delete_on_destruction = true) throws(...);

  const path& path() const; 
};

Thank you.

Best regards
Jorge