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# Crow
Crow is C++ microframework for web. (inspired by Python Flask)
## Features
- Easy routing
- Similiar to Flask
- Type-safe Handlers (see Example)
- Fast built-in JSON parser (crow::json)
- [Mustache](http://mustache.github.io/) based templating library (crow::mustache)
- Header only
- Provide an amalgamated header file `crow_all.h' with every features
## Still in development
- Built-in ORM
- Middleware support
## Example
```c++
#include "crow.h"
#include "json.h"
#include <sstream>
int main()
{
crow::Crow app;
CROW_ROUTE(app, "/about")
([](){
return "About Crow example.";
});
// simple json response
CROW_ROUTE(app, "/json")
([]{
crow::json::wvalue x;
x["message"] = "Hello, World!";
return x;
});
// argument
CROW_ROUTE(app,"/hello/<int>")
([](int count){
if (count > 100)
return crow::response(400);
std::ostringstream os;
os << count << " bottles of beer!";
return crow::response(os.str());
});
// Compile error with message "Handler type is mismatched with URL paramters"
//CROW_ROUTE(app,"/another/<int>")
//([](int a, int b){
//return crow::response(500);
//});
// more json example
CROW_ROUTE(app, "/add_json")
([](const crow::request& req){
auto x = crow::json::load(req.body);
if (!x)
return crow::response(400);
int sum = x["a"].i()+x["b"].i();
std::ostringstream os;
os << sum;
return crow::response{os.str()};
});
app.port(18080)
.multithreaded()
.run();
}
```
## How to Build
If you just want to use crow, copy amalgamate/crow_all.h and include it.
### Requirements
- C++ compiler with good C++11 support (tested with g++>=4.8)
- boost library
- CMake
- Linking with tcmalloc/jemalloc is recommended for speed.
### Building (Tests, Examples)
Out-of-source build with CMake is recommended.
```
mkdir build
cd build
cmake ..
make
```
You can run tests with following commands:
```
ctest
```
### Installing missing dependencies
#### Ubuntu
sudo apt-get install build-essential libtcmalloc-minimal4 && sudo ln -s /usr/lib/libtcmalloc_minimal.so.4 /usr/lib/libtcmalloc_minimal.so
#### OSX
brew install boost google-perftools
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