c++ std::filesystem discussion, std::filesystem was added to the ISO C++ standard library in C++17
Specification available from http://en.cppreference.com/w/cpp/filesystem
Questions tagged [std-filesystem]
165 questions
5
votes
1 answer
Does llvm 9 support std::filesystem on versions of the mac prior to 10.15?
I have an old Mac (circa 2009) running El Capitan version 10.11.6. Apple doesn't allow further updates of its OS on my machine, but through Macports it serves as a fine development environment for non-Apple-specific software.
I'm compiling with…
Curious
- 128
- 5
4
votes
0 answers
create all folder in a big path (with subfolders)
Im trying to create all folder in a path that reach to a file, for that by a little search I found out about std::filesystem::create_directories its ok but the problem of using it is looks like its can't handle long paths with so many subfolders,…
file-tracer
- 329
- 1
- 7
4
votes
2 answers
Why can't I insert this transformed directory_iterator into a vector?
I am trying to insert a transformed range of directory entries into a vector using its insert(const_iterator pos, InputIt first, InputIt last) member function template.
Unfortunately I can't get the following code to compile under GCC 11.1.0, which…
neop
- 89
- 2
- 9
4
votes
1 answer
std:: has no member "filesystem" in C++/17
I'm trying to include , but when I use a namespace, it shows this error:
std:: has no member "filesystem"
I know in older times it is and namespace is std::experimental::filesystem;
but, when i does this, it…
Ahmet Yusuf Yatkın
- 232
- 2
- 13
4
votes
0 answers
std::filesystem::relative bug in Mingw or msvc?
I have the following code snipped, which produces the following output on mingw(gcc) and msvc:
std::cout << std::filesystem::relative("D:/home/freddy", "C:/home") << std::endl;
mingw(gcc):
"\\home\\freddy"
msvc:
""
gcc and also clang (both…
Fabian Keßler
- 563
- 3
- 12
4
votes
1 answer
Lexical compare std::filesystem::path case insensitive?
My issue is something like the following: to determine if two paths are identical on the windows platform, paths are compared case insensitive, ei. "C:\test.txt" and "C:\Test.txt" resolves to the same file element. I could solve this easily by using…
darune
- 10,480
- 2
- 24
- 62
4
votes
1 answer
What are the possible error codes that can be returned when calling std::filesystem::copy()?
I can't seem to find a list of error codes that might be passed into the ec parameter for std::filesystem::copy.
cppreference.com seems to indicate that the error codes are OS-specific.Looking at the Microsoft documentation (As I'm specifically…
Dan Forever
- 381
- 2
- 12
4
votes
2 answers
How can a std::filesystem root path have itself as a parent?
This program:
#include
#include
int main()
{
std::filesystem::path p1("c:\\");
std::filesystem::path p2("c:/");
if (p1.has_parent_path())
std::cout << "Parent path of " << p1 << " is " << p1.parent_path()…
Joe
- 5,394
- 3
- 23
- 54
4
votes
2 answers
Python bindings using pybind11 with std::filesystem as function argument giving TypeError
I have a class Foo() and class Foo() has a function with the following declaration:
bool Foo::copyFile(const std::filesystem::path& src, const std::filesystem::path& dest)
The requirement is that the class Foo should have Python bindings. I am using…
user304255
- 121
- 1
- 7
4
votes
1 answer
What library to link to for std::filesystem with Xcode
Xcode 10.2 now includes the header. However, when writing code using std::filesystem, I'm running into a lot of extra link errors.
Undefined symbols for architecture x86_64:
"std::__1::__fs::filesystem::path::__filename() const",…
leecbaker
- 3,611
- 2
- 35
- 51
4
votes
1 answer
How to retrieve the clock type of std::filesystem::file_time_type in C++17
Since std::filesystem::file_time_type uses a trivial clock in C++17, is there a way to retrieve the actual clock type of file_time_type with C++17**?
The goal is to convert the time to std::chrono::system_clock to use it e.g. in a stream.
** In…
Roi Danton
- 7,933
- 6
- 68
- 80
4
votes
1 answer
Compile error when std::filesystem header file is added to my program
I am trying to compile a simple C++ program with std::filesytem header file included!
#include
#include
int main() {
std::cout << "Hello, World!" << std::endl;
return 0;
}
On compiling I get the following error
In…
Njunwa Wamavoko
- 45
- 1
- 9
4
votes
0 answers
How similar are boost::filesystem and std::filesystem?
I believe boost::filesystem was at least one of the "source" libraries used to design std::filesystem for C++17.
How similar are they? If very similar, what are the known gotchas and incompatibilities? If not, where are they similar?
This is in…
Yakk - Adam Nevraumont
- 262,606
- 27
- 330
- 524
3
votes
1 answer
How to skip/disregard files with names that use wide characters using std::filesystem?
I am iterating through a large set of nested directories searching for files of some extension, say ".foo" using code like the following:
namespace fs = std::filesystem;
int main(int argc, char* argv[])
{
std::ios_base::sync_with_stdio(false);
…
jwezorek
- 8,592
- 1
- 29
- 46
3
votes
2 answers
I don't know how to use filesystem to look for .txt files c++
I would like to use std::filesystem in my project, which will allow me to show .txt files in the current directory (I use Ubuntu, I don't need a Windows function because I have already seen one on StackOverflow).
Here is my GitHub…
Eriss69
- 69
- 5