将字符串转换为标准文件系统路径

Question

文件路径作为字符串传递。如何将此字符串转换为 std::filesystem::path？示例：

#include <filesystem>

std::string inputPath = "a/custom/path.ext";
const std::filesystem::path path = inputPath; // Is this assignment safe?

Answer 1

是的，这个构造是安全的：

const std::filesystem::path path = inputPath; // Is this assignment safe?

那不是赋值，那是复制初始化。您正在调用此 constructor:

template< class Source >
path( const Source& source );

需要：

Constructs the path from a character sequence provided by source (4), which is a pointer or an input iterator to a null-terminated character/wide character sequence, an std::basic_string or an std::basic_string_view,

所以你很好。另外，如果您不能从 std::string 构造 filesystem::path，那将是真的奇怪。

将字符串转换为标准文件系统路径

Convert a string to std filesystem path

c++

c++17