Boost does need something like this, I do absolutely endorse this library becoming part of boost. On Fri, Dec 30, 2022, 08:23 Peter Dimov via Boost <boost@lists.boost.org> wrote:
I'm looking for endorsements and a review manager volunteer for a new library, Boost.Mustache. It's an implementation of Mustache templates (http://mustache.github.io/) in C++11 and at the moment supports the mandatory portions of the Mustache spec (https://github.com/mustache/spec).
The repository is https://github.com/pdimov/mustache.
Mustache is a simple templating language in which tags of the form {{something}} are replaced with the value of the entity `something`, which typically means with the member "something" of the JSON object passed when rendering the template.
Boost.Mustache can take a Boost.JSON object as the context against which data references are resolved, but it can also take arbitrary values that can be converted to boost::json::value by using boost::json::value_from.
This allows, for instance, described classes (structs and classes annotated with Boost.Describe) to be passed as the data context, such that references to e.g. {{title}} in the template are resolved to the corresponding `title` member of the class.
A simple usage example demonstrating the above is:
``` #include <boost/mustache.hpp> #include <boost/describe.hpp> #include <iostream>
struct item { std::string title; std::string author; std::string link; };
BOOST_DESCRIBE_STRUCT(item, (), (title, author, link))
struct reference { std::string heading; std::vector<item> items; };
BOOST_DESCRIBE_STRUCT(reference, (), (heading, items))
int main() { reference ref = { "Reference", { { "Better Bit Mixing - Improving on MurmurHash3's 64-bit Finalizer", "David Stafford", " https://zimbry.blogspot.com/2011/09/better-bit-mixing-improving-on.html" }, { "Stronger, better, morer, Moremur; a better Murmur3-type mixer", "Pelle Evensen", " https://mostlymangling.blogspot.com/2019/12/stronger-better-morer-moremur-be... " }, { "Improved mx3 and the RRC test", "Jon Maiga", "http://jonkagstrom.com/mx3/mx3_rev2.html" } } };
std::string tmpl = R"(<html> <body> <h1>{{heading}}</h1> <ul> {{#items}} <li> <strong>{{title}}</strong><br> <em>{{author}}</em><br> <a href="{{link}}">{{link}}</a> {{/items}} </ul> </body> </html>)";
boost::mustache::render( tmpl, std::cout, ref, {} ); } ```
The resulting output is
<html> <body> <h1>Reference</h1> <ul> <li> <strong>Better Bit Mixing - Improving on MurmurHash3's 64-bit Finalizer</strong><br> <em>David Stafford</em><br> <a href=" https://zimbry.blogspot.com/2011/09/better-bit-mixing-improving-on.html"> https://zimbry.blogspot.com/2011/09/better-bit-mixing-improving-on.html </a> <li> <strong>Stronger, better, morer, Moremur; a better Murmur3-type mixer</strong><br> <em>Pelle Evensen</em><br> <a href=" https://mostlymangling.blogspot.com/2019/12/stronger-better-morer-moremur-be... "> https://mostlymangling.blogspot.com/2019/12/stronger-better-morer-moremur-be... </a> <li> <strong>Improved mx3 and the RRC test</strong><br> <em>Jon Maiga</em><br> <a href="http://jonkagstrom.com/mx3/mx3_rev2.html"> http://jonkagstrom.com/mx3/mx3_rev2.html</a> </ul> </body> </html>
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