CMakeLists.txt

@@ -225,6 +225,7 @@ target_precompile_headers(tile PUBLIC json/nlohann/json.hpp)
 target_include_directories(
   tile
   PUBLIC 
+         "${CMAKE_CURRENT_SOURCE_DIR}/third_party/mustache.hpp"
          "${CMAKE_CURRENT_BINARY_DIR}"
          "${CMAKE_CURRENT_SOURCE_DIR}/third_party/fmt/include"
          "${CMAKE_CURRENT_BINARY_DIR}/third_party/glog"

third_party/mustache/.gitignore

@@ -0,0 +1,5 @@
+/build
+/build_xcode
+/build64
+mustache
+mustache14

third_party/mustache/.travis.yml

@@ -0,0 +1,26 @@
+language: cpp
+
+sudo: required
+dist: trusty
+
+matrix:
+  include:
+    - os: linux
+      compiler: gcc
+
+    - os: linux
+      compiler: clang
+
+    - os: osx
+      compiler: clang
+
+script:
+  - make coverage
+
+after_success:
+  # Use "-X gcov" to disable Codecov from running gcov. We already run this
+  # command in "make coverage" and then delete unwanted coverage files that
+  # contribute falsely to the coverage report, such as catch.hpp
+  # Only send Linux (GCC) code coverage as the clang ones seem to be buggy and
+  # report curly braces as unexecuted lines.
+  - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then bash <(curl -s https://codecov.io/bash) -X gcov; fi

third_party/mustache/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 2.8)
+project(mustache)
+if (UNIX)
+	add_definitions(
+		-Wall
+		-Wextra
+		-Werror
+		-std=c++11
+	)
+elseif (MSVC)
+	add_definitions(
+		/W3
+		/WX
+	)
+endif()
+add_executable(mustache
+	mustache.hpp # to show in IDE
+	tests.cpp
+)

third_party/mustache/LICENSE

@@ -0,0 +1,25 @@
+Boost Software License - Version 1.0
+
+Copyright 2015-2020 Kevin Wojniak
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

third_party/mustache/Makefile

@@ -0,0 +1,31 @@
+default:
+	g++ -O3 -Wall -Wextra -Werror -std=c++11 -o mustache tests.cpp
+	./mustache
+
+mac:
+	clang++ -O3 -Wall -Wextra -Werror -std=c++11 -stdlib=libc++ -o mustache tests.cpp
+	./mustache
+
+mac14:
+	clang++ -O3 -Wall -Wextra -Werror -std=c++14 -stdlib=libc++ -o mustache14 tests.cpp
+	./mustache14
+
+clang:
+	clang++ -O3 -Wall -Wextra -Werror -std=c++11 -o mustache tests.cpp
+
+# https://gcc.gnu.org/onlinedocs/gcc/Invoking-Gcov.html
+coverage:
+	g++ -std=c++11 -coverage -O0 -o mustache tests.cpp
+	./mustache
+	gcov -l tests.cpp
+# We only want coverage for mustache.hpp and tests.cpp, so delete all the other *.gcov files
+	find . -type f -name 'tests.cpp*.gcov' ! -name 'tests.cpp.gcov' ! -name 'tests.cpp##mustache.hpp.gcov' -delete
+
+xcode:
+	mkdir -p build_xcode
+	cd build_xcode && cmake -GXcode ..
+	open build_xcode/*.xcodeproj
+
+clean:
+	rm -rf mustache mustache14 build build_xcode
+	rm -rf *.gcov *.gcda *.gcno # coverage artifacts

third_party/mustache/README.md

@@ -0,0 +1,125 @@
+# About
+
+* [Mustache](http://mustache.github.io) implementation for modern C++ (requires C++11)
+* Header only
+* Zero dependencies
+* Templated string type for compatibility with any STL-like string (std::string, std::wstring, etc)
+* Boost license
+
+[![travis](https://travis-ci.org/kainjow/Mustache.svg?branch=master)](https://travis-ci.org/kainjow/Mustache) [![appveyor](https://ci.appveyor.com/api/projects/status/6uh5d5weajrffkyw?svg=true)](https://ci.appveyor.com/project/kainjow/mustache) [![codecov](https://codecov.io/gh/kainjow/Mustache/branch/master/graph/badge.svg)](https://codecov.io/gh/kainjow/Mustache)
+
+## Example usage
+
+All examples assume `using namespace kainjow::mustache`. Additional examples and usage can be found in the `tests.cpp` file.
+
+### Example 1 - Hello World
+
+````cpp
+mustache tmpl{"Hello {{what}}!"};
+std::cout << tmpl.render({"what", "World"}) << std::endl;
+// Hello World!
+````
+
+### Example 2 - Lists
+
+````cpp
+mustache tmpl{"{{#employees}}{{name}}, {{/employees}}"};
+data employees{data::type::list};
+employees << data{"name", "Steve"} << data{"name", "Bill"};
+tmpl.render({"employees", employees}, std::cout);
+// Steve, Bill,
+````
+
+### Example 3 - Custom Render Handler
+
+````cpp
+mustache tmpl("Hello {{what}}!");
+std::stringstream ss;
+tmpl.render({"what", "World"}, [&ss](const std::string& str) {
+    ss << str;
+});
+// ss.str() == "Hello World!"
+````
+
+## Supported Features
+
+This library supports all current Mustache features:
+
+- Variables
+- HTML escaping
+- Sections
+- Inverted Sections
+- True/False
+- Lists
+- Lambdas
+- Partials
+- Comments
+- Set Delimiter
+
+Additional features:
+
+- Custom escape function for use outside of HTML
+
+## Run Tests
+
+For *nix:
+
+    make
+
+For macOS:
+
+    make mac
+
+For Visual Studio 2013 (CMake 2.8+ required):
+
+    build.bat
+
+For Visual Studio 2015 (CMake 3.1+ required):
+
+    build.bat 14
+
+## Release Notes
+
+#### 4.1 - April 18, 2020
+
+* Fixed incorrect results when using lambda renderers
+
+#### 4.0 - October 28, 2019
+
+* Lines with sections that result in an empty line are removed, per the Mustache spec.
+
+#### 3.2.1 - July 22, 2018
+
+* Add an overload to render() that accepts a context and a stream (thanks Kitsune Ral)
+* Added checks for empty objects (thanks Snafuuz)
+* Refactored parser in preparation for future changes
+
+#### 3.2 - February 24, 2018
+
+* Added ability to provide a custom escape function (thanks to Kitsune Ral)
+* Allow `data.set()` to override an existing value
+
+#### 3.1 - July 22, 2017
+
+* Added a new lambda type (innovatively called `lambda2`) that takes an additional render function. It will not render its result but allows the user to call the `render` argument to render the section text, or any other text.
+
+#### 3.0 - July 8, 2017
+
+* Performance improvements - about 45% faster than version 2
+* Even simpler API. Not backwards compatible but upgrading should be straightforward:
+  * Namespace, classes, and methods are now in snake case to match the STL. For example, `Kainjow::Mustache` is now `kainjow::mustache`
+  * Classes and aliases are now under a `mustache` namespace, instead of being under the mustache class
+  * Removed `Data::List()` - use `data{data::type::list}` instead
+  * Removed `Data::type()` - use the various `is_xxx` methods to identity the type
+
+#### 2.0 - June 11, 2016
+
+* New simpler API (not backwards compatible)
+* std::wstring support
+* Bug fixes (thanks to Shen-Ta Hsieh)
+* Automated tests on OS X
+* 100% test coverage
+
+#### 1.0 - April 19, 2015
+
+* All current Mustache features are implemented.

third_party/mustache/appveyor.yml

@@ -0,0 +1,18 @@
+branches:
+  only:
+    - master
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
+      CMAKE_GENERATOR: Visual Studio 12 Win64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      CMAKE_GENERATOR: Visual Studio 14 Win64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_GENERATOR: Visual Studio 15 Win64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      CMAKE_GENERATOR: Visual Studio 16 2019
+platform: x64
+build_script:
+  - cmake -G "%CMAKE_GENERATOR%" .
+  - cmake --build . --config Release
+  - Release\mustache.exe

third_party/mustache/build.bat

@@ -0,0 +1,50 @@
+:: don't output commands
+@echo off
+
+:: get version from input args
+:: default value is 12
+:: only 12 and 14 are supported
+set vers=%1
+if "%vers%" == "" set vers=12
+if "%vers%" neq "12" (
+  if "%vers%" neq "14" (
+    echo Invalid version "%vers%" - expected 12 or 14.
+    exit /b 1
+  )
+)
+
+:: make build directory
+if not exist build mkdir build
+pushd build
+
+:: run CMake
+cmake -G "Visual Studio %vers%" ..
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+:: build with CMake
+cmake --build . --config Release
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+:: run tests
+Release\mustache.exe
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+popd
+
+:: make build64 directory
+if not exist build64 mkdir build64
+pushd build64
+
+:: run CMake
+cmake -G "Visual Studio %vers% Win64" ..
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+:: build with CMake
+cmake --build . --config Release
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+:: run tests
+Release\mustache.exe
+if %errorlevel% neq 0 popd & exit /b %errorlevel%
+
+popd

tile/tile.h

@@ -44,6 +44,7 @@
 #include "sigslot/signal.h"
 
 // Tile Init
+#include "mustache.hpp"
 #include "tile/init.h"
 
 #endif // TILE_TILE_H