v2.9.1

Initial Mustache support

• Added glz::mustache in #1102

Given a struct:

struct person
{
   std::string first_name{};
   std::string last_name{};
   uint32_t age{};
   bool hungry{};
};

Apply the struct to a template (layout) to replace mustaches with content:

std::string_view layout = R"({{first_name}} {{last_name}}, age: {{age}})";

person p{"Henry", "Foster", 34};
auto result = glz::mustache(p, layout).value_or("error");
expect(result == "Henry Foster, age: 34");

• Located at: #include "glaze/mustache/mustache.hpp"

More advanced features of the mustache specification will be added in the future.

JSON concepts

• Added in #1105
  Example:

static_assert(glz::json_string<std::string>);
static_assert(glz::json_string<std::string_view>);
static_assert(glz::json_object<my_struct>);
static_assert(glz::json_array<std::array<float, 3>>);
static_assert(glz::json_boolean<bool>);
static_assert(glz::json_number<float>);
static_assert(glz::json_integer<uint64_t>);
static_assert(glz::json_null<std::nullptr_t>);

glz::read_directory and glz::write_directory

• Adds the ability to read and write maps as directories of files

std::map<std::filesystem::path, my_struct> files{{"./dir/alpha.json", {}}, {"./dir/beta.json", {.i = 0}}};
expect(not glz::write_directory(files, "./dir"));

std::map<std::filesystem::path, my_struct> input{};
expect(not glz::read_directory(input, "./dir"));
expect(input.size() == 2);
expect(input.contains("./dir/alpha.json"));
expect(input.contains("./dir/beta.json"));
expect(input["./dir/beta.json"].i == 0);

• Added in #1109

Other Features

• glz::format_to for numbers by @stephenberry in #1106

Full Changelog: v2.9.0...v2.9.1