base_n::basic_codec_traits::make_encoder¶
template <codecs::input_source IS>
requires codecs::byte_type<typename IS::element_type>
static auto make_encoder(IS is) ->
base_n::encode_algorithm<EncodingTraits, IS>;
Creates an encoder from the codecs::input_source is
.
Template parameters¶
Name |
Description |
---|---|
IS |
Input source type, must model codecs::input_source
and
typename IS::element_type must model |
Parameters¶
is - The input source
Return value¶
An encoder wrapping the input source.
Example¶
#include <iostream>
#include <string>
#include <mgs/base64.hpp>
#include <mgs/base_n/basic_codec_traits.hpp>
#include <mgs/codecs/basic_input_range.hpp>
#include <mgs/codecs/iterator_sentinel_source.hpp>
using namespace mgs;
using namespace mgs::base_n;
namespace {
struct binary_encoding_traits {
// using C++17 inline variables for simplicity
inline static char const alphabet[] = {'0', '1'};
inline static auto const padding_policy = base_n::padding_policy::none;
static int index_of(char c) {
if (c == '0') return 0;
if (c == '1') return 1;
return -1;
}
};
} // namespace
using binary_traits = basic_codec_traits<binary_encoding_traits>;
int main() {
std::string hello("Hello, World!");
auto input_source = codecs::make_iterator_sentinel_source(hello);
auto encoder = binary_traits::make_encoder(input_source);
auto encoding_range = codecs::make_input_range(encoder);
std::string encoded(encoding_range.begin(), encoding_range.end());
std::cout << encoded << std::endl;
}