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feat(string): add support for converting split_to

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This commit is contained in:
Marcus Holland-Moritz 2024-08-13 19:24:31 +02:00
parent 88371340d9
commit 4a7a993d95
2 changed files with 22 additions and 2 deletions
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6
include/dwarfs/conv.h
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@ -77,7 +77,11 @@ std::optional<T> tryTo(U&& s)
template <typename T, typename U> template <typename T, typename U>
T to(U&& s) { T to(U&& s) {
return tryTo<T>(std::forward<U>(s)).value(); if constexpr (std::same_as<T, std::decay_t<U>>) {
return std::forward<U>(s);
} else {
return tryTo<T>(std::forward<U>(s)).value();
}
} }
} // namespace dwarfs } // namespace dwarfs

18
include/dwarfs/string.h
View File

@ -21,6 +21,7 @@
#pragma once #pragma once
#include <concepts>
#include <iterator> #include <iterator>
#include <type_traits> #include <type_traits>
#include <utility> #include <utility>
@ -30,10 +31,14 @@
#include <range/v3/view/map.hpp> #include <range/v3/view/map.hpp>
#include <range/v3/view/split.hpp> #include <range/v3/view/split.hpp>
#include <dwarfs/conv.h>
namespace dwarfs { namespace dwarfs {
template <typename T, typename Input, typename Delim> template <typename T, typename Input, typename Delim>
auto split_view(Input&& input, Delim&& delim) { auto split_view(Input&& input, Delim&& delim)
requires(std::same_as<T, std::string> || std::same_as<T, std::string_view>)
{
return std::forward<Input>(input) | return std::forward<Input>(input) |
ranges::views::split(std::forward<Delim>(delim)) | ranges::views::split(std::forward<Delim>(delim)) |
ranges::views::transform([](auto&& rng) { ranges::views::transform([](auto&& rng) {
@ -41,6 +46,17 @@ auto split_view(Input&& input, Delim&& delim) {
}); });
} }
template <typename T, typename Input, typename Delim>
auto split_view(Input&& input, Delim&& delim)
requires std::is_arithmetic_v<T>
{
return std::forward<Input>(input) |
ranges::views::split(std::forward<Delim>(delim)) |
ranges::views::transform([](auto&& rng) {
return to<T>(std::string_view(&*rng.begin(), ranges::distance(rng)));
});
}
template <typename T, typename Delim> template <typename T, typename Delim>
auto split_view(char const* input, Delim&& delim) { auto split_view(char const* input, Delim&& delim) {
return split_view<T>(std::string_view(input), std::forward<Delim>(delim)); return split_view<T>(std::string_view(input), std::forward<Delim>(delim));