36 lines
1.3 KiB
C++
36 lines
1.3 KiB
C++
#pragma once
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#include <memory>
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#include <mutex>
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#include <optional>
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#include <vector>
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template<class T, class... Args>
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std::unique_ptr<T> make_unique_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
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return std::unique_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
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}
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template<typename T>
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inline typename std::unique_ptr<T> make_unique_nothrow(size_t num) noexcept {
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return std::unique_ptr<T>(new (std::nothrow) std::remove_extent_t<T>[num]());
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}
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template<class T, class... Args>
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std::shared_ptr<T> make_shared_nothrow(Args &&...args) noexcept(noexcept(T(std::forward<Args>(args)...))) {
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return std::shared_ptr<T>(new (std::nothrow) T(std::forward<Args>(args)...));
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}
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template<typename... Args>
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std::string string_format(const std::string &format, Args... args) {
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int size_s = std::snprintf(nullptr, 0, format.c_str(), args...) + 1; // Extra space for '\0'
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auto size = static_cast<size_t>(size_s);
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auto buf = make_unique_nothrow<char[]>(size);
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if (!buf) {
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return std::string("");
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}
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std::snprintf(buf.get(), size, format.c_str(), args...);
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return std::string(buf.get(), buf.get() + size - 1); // We don't want the '\0' inside
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}
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std::optional<std::string> hashFile(const std::string &path);
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