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Questions tagged [boost-filesystem]

The Boost.Filesystem library provides facilities to manipulate files and directories, and the paths that identify them.

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Why does std::filesystem provide so many non-member functions?

Consider for example file_size. To get the size of a file we will be using std::filesystem::path p = std::filesystem::current_path(); // ... usual "does this exist && is this a file" boilerplate auto n = std::filesystem::file_size(p); Nothing…
dlw
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boost::filesystem::create_directories(".") fails

boost::filesystem::create_directories(".") always fails on my system. It seems like this might be a bug, but after reading the documentation I'm not entirely sure. Here's an example program: #include #include int…
John Zwinck
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Linker errors when using boost::filesystem?

I have the following code: #include #include int main(){ const char* file_path = "my_path"; std::cout << boost::filesystem::file_size(file_path) << std::endl; } and when I build I get the following…
user997112
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C++:boost file system to return a list of files older than a specific time

I am using the Boost::FileSystem library with C++ running under Linux platform and I have a question following: I would like to have a list of files which are modified older than a given date time. I don't know whether the boost::FileSystem offer…
olidev
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Extract the parent folder of a directory using boost::filesystem

Suppose I have the following folder std::string m("C:\MyFolderA\MyFolderB\MyFolderC"); boost::filesystem::path p(m); Is there anyway for me to extract the parent of this folder. I want to get the string MyFolderB. from the above path.
James Franco
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How to create a folder in the home directory?

I want to create a directory path = "$HOME/somedir". I've tried using boost::filesystem::create_directory(path), but it fails - apparently the function doesn't expand system variables. How can I do it the simplest way? (note: in my case the…
lampak
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How to use copy_file in boost::filesystem?

I want to copy a file from directory to another, but my program always aborts for some reasons.Has anyone done this this before could tell me what was wrong? And how could I catch exceptions was thrown by copy_file, I checked boost site, but I could…
roxrook
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Which compilers support std::filesystem?

Thanks to C++11, after a long relationship with boost, the last component that makes me depend on it is the filesystem. std::filesystem seems to be implemented as experimental according to the link: Filesystem library Since it mimics…
deniz
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C++ / Boost Filesystem - mismatch detected for '_MSC_VER': value '1700' doesn't match value '1600'

I'm new to C++ and Boost. I'm doing a small simple program to trying to learn the Boost Filesystem library. I have followed the directions to build the Boost libs. And now when I try to compile this simple code I get 6 of these errors. Error 5 …
BuddyJoe
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Should boost::filesystem::exists really throw an exception for removable media device with no media?

I've run into a bit of an odd circumstance while using boost::filesystem::exists. If you attempt to check for the existance of a file on a drive that isn't ready or has no media in it, it throws a basic_filesystem_error. As far as I'm concerned…
Perculator
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how to use C++ to get the folder/directory name, but not the path of one file? Especially boost::filesystem;

std::string file="C:\\folder1\\folder2\\folder3.txt"; fs::path file_path(file); fs::path file_dir=file_path.parent_path();// "C:\\folder1\\folder2"; std::string str_path=file_path.string(); std::string str_dir=file_dir.string(); std:string…
Pengju Zhao
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How do I ignore hidden files (and files in hidden directories) with Boost Filesystem?

I am iterating through all files in a directory recursively using the following: try { for ( bf::recursive_directory_iterator end, dir("./"); dir != end; ++dir ) { const bf::path &p = dir->path(); …
Soverman
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How to get file permissions with c++ boost library?

I am working on a project to make a database of the files I have on current directory. And one of the details I want about my files is the file permissions that are set with chmod in ubuntu. (just a note: I will be needing the group and owner info…
Logan
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Why does std::filesystem::path::append replace the current path if p starts with root path

Given below code: #include #include namespace fs = std::filesystem; int main() { fs::path fsBase = "/base"; fs::path fsAppend = "/append"; auto fsResult = fsBase / fsAppend; std::cout << "fsResult: " <<…
Mine
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Why Must I Still Use -lstdc++fs?

There have been several questions about getting experimental/filesystem to compile in the latest versions of GCC and Clang: experimental::filesystem linker error But now filesystem has been accepted into c++17 so no more need for experimental or the…
Jonathan Mee
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