#include <sys/stat.h> // Function: fileExists /** * Check if a file exists * * @param[in] filename - the name of the file to check * * @return true if the file exists, else false */ bool fileExists(const std::s
要判断一个 std::filesystem::path 对象表示的路径是否存在并且是一个文件夹,可以按照以下步骤进行: 检查路径是否存在: 使用std::filesystem::exists 函数来检查路径是否存在。 检查路径是否是一个文件夹: 如果路径存在,使用 std::filesystem::is_directory 函数来进一步验证该路径是否是一个文件夹。 以下是实现上...
2)Letsbe astd::filesystem::file_statusdetermined as if bystatus(p)orstatus(p, ec)(symlinks are followed), respectively. Returnsexists(s). The non-throwing overload callsec.clear()ifstatus_known(s). Parameters s-file status to check ...
#include <iostream> #include <fstream> #include <cstdint> #include <experimental/filesystem> namespace fs = std::experimental::filesystem; void demo_exists(const fs::path& p, fs::file_status s = fs::file_status{}) { std::cout << p; if(fs::status_known(s) ? fs::exists(s) :...
1)等价于status_known(s)&&s.type()!=file_type::not_found. 2)令s分别为如同以status(p)或status(p, ec)(跟随符号链接)确定的std::filesystem::file_status。返回exists(s)。若status_known(s)则不抛出重载调用ec.clear()。 参数 s-要检验的文件状态 ...
make_minimum_required(VERSION 3.13) project(TheFsProject) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_REQUIRED_FLAGS -std=c++17) include(CheckCXXSymbolExists) CHECK_CXX_SYMBOL_EXISTS(std::filesystem::path::preferred_separator cxx17fs) if(cxx17fs) add_executable(TheFsProject main.cpp) set...
checks whether path refers to existing file system object (function) statussymlink_status status of the file designated by this directory entrysymlink_status of the file designated by this directory entry (public member function of std::filesystem::directory_entry) ...
2,3)Letsbe astd::filesystem::file_statusdetermined as if bystatus(p)orstatus(p, ec)(symlinks are followed), respectively. Returnsexists(s). The non-throwing overload callsec.clear()ifstatus_known(s). Parameters s-file status to check ...
exists (C++17) checks whether path refers to existing file system object (function) statussymlink_status status of the file designated by this directory entrysymlink_status of the file designated by this directory entry (public member function of std::filesystem::directory_entry) ...
1)std::filesystem::exists(status())。 2)std::filesystem::exists(status(ec))。 注意,status()将跟随符号链接到其目标。 参数 返回值 若被指代文件系统对象存在则为true。 异常 若内存分配失败,则任何不标记为noexcept的重载可能抛出std::bad_alloc。