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
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1 answer
How to check if std::filesystem::copy is ended?
Copying files to a directory to another directory using this code
auto const copyOption = std::filesystem::copy_options::recursive | std::filesystem::copy_options::skip_symlinks;
std::filesystem::copy("/mnt/iso", "/mnt/usb", copyOption);
Copying…
kramer
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2 answers
iterating through all the directories and subdirectories in c++
I wanted to use the std::filesystem::recursive_directory_iterator class to create a class method iterating through all subdirectories and processing found xml files.
The only way I have found on the internet to do this was using a for loop like…
skrzypin
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1 answer
How to reset filesystem::current_path() in C++17?
I am writing a C++ program in which I change the working directory with std::filesystem::current_path(working_directory), where working_directory is a string. Is there a good way to, later in the program, reset the working directory to its original…
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1 answer
Why abort() method is called sometimes when I iterate over directory using std::filesystem::directory_terator?
I am creating a simple file watcher in C++. I am using std::filesystem::directory_iterator and sometimes it crashes with abort() being called. It works perfectly when I track creating and editing of files (which is not strange, because for that I…
CuriousPan
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Check if user has the permission to create a file at path p, without creating a file at the path
In C++ is there a way to check, if we have the permission to create a file at a certain path without actually creating a file?
I already read How do I create a file with boost filesystem without opening it
Here is how we can do it by creating the…
Abhinav
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Visual Studio 2019 C++ and std::filesystem changing to ISO C++17 Standard or adding _HAS_CXX17 1 do not work
based on this thread it is still not working although i changed to ISO C++17 Standard (/std:c++17)
in c++ -> language in VS 2019 config.
also try to set :
#ifdef _WIN32
#define _HAS_CXX17 1
#endif
it worked but to day it gave me compilation error…
user63898
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4 answers
std::filesystem:file_size send me an incoherent value
In order to read a file in my code, I use std::filesystem::file_size (https://en.cppreference.com/w/cpp/filesystem/file_size) to get his size. I use this code :
template
inline void read_binary_file(const fs::path filename,…
Kafka
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1 answer
Determine if some relative directory is part of absolute path using std::filesystem::path
I can't figure out how to identify if absolute path contains some relative directory inside it using std::filesystem::path but still with no luck. I have the following peace of code:
const std::filesystem::path absolutePath =…
Oleg
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How can I erase first and last character in string?
This function returns an array of strings with a list of files in a folder. It looks like this:
"folder//xyz.txt"
How can I make it look like this?
folder//xyz.txt
Its the same but without "".
vector list_of_files(string folder_name) …
Kuba Wójcik
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- 1
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1 answer
fs::recursive_directory_iterator exception unhandled
I wrote code that searchs ".data" files in directory, when i do it in this way, works perfectly:
std::string path("C:\\Users\\MyPC\\OneDrive\\Desktop\\Database");
std::string ext(".data");
std::string Datas[50];
int DataCounter = 0;
…
Ahmet Yusuf Yatkın
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0 answers
Mingw bug?: std::filesystem::copy fails with filesystem error when file exist, even when the copy_option to overwrite_existing is defined
MINGW v. 8.0
-- The C compiler identification is GNU 10.2.0
-- The CXX compiler identification is GNU 10.2.0
-- Check for working C compiler: P:/MSYS2/mingw64/bin/gcc.exe
-- Check for working C compiler: P:/MSYS2/mingw64/bin/gcc.exe - works
trying…
Fabian Keßler
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Issue with sorting a vector of C++17 Filesystem::last_write_time
I'm having an issue trying to sort a vector of files by their last write time. Sorting seems to work as intended, however sometimes even though the time string shows a higher date, the time_t is lower.
Example Output:
Wed Aug 19 01:51:07 2020 ||…
Epsilon Rho
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why path::root_name() has different behavior with and
For last couple of days I have been experimenting the behavior of few of the functions of filesystem and experimental/filesystem library.
Note: I ran the code on https://godbolt.org/
below is the code snippet with its output
1.…
Praveer Kumar
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Uninitialized Usage in libstdc++ filesystem?
Consider the following code:
#include
int main() {
std::filesystem::path p{"/"};
}
When compiling with clang10 with the flags -std=c++17 -fsanitize=memory -g -O1 -stdlib=libstdc++ it compiles totally fine, but when running, the…
n314159
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2 answers
Cross platform file list using wildcard
I'm looking for a cross platform function that supports wildcard listing of a directory contents similar to what FindFirstFile on windows.
Is the wildcard pattern accepted in windows very specific to windows? I want something that supports…
Captain Jack sparrow
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