# MessageHeaders (rhymessage)
This is a library which implements [RFC
5322](https://tools.ietf.org/html/rfc5322), "Internet Message Format".
[](https://crates.io/crates/rhymessage)
[][dox]
More information about the Rust implementation of this library can be found in
the [crate documentation][dox].
[dox]: https://docs.rs/rhymessage
The purpose of this library is to provide a `MessageHeaders` type which can be
used to parse the header portion of e-mail or web server/client messages from
strings, render them as strings, and get or set the individual headers.
This is a multi-language library containing independent implementations
for the following programming languages:
* C++
* Rust
## Building the C++ Implementation
A portable library is built which depends only on the C++11 compiler and
standard library, so it should be supported on almost any platform. The
following are recommended toolchains for popular platforms.
* Windows -- [Visual Studio](https://www.visualstudio.com/) (Microsoft Visual
C++)
* Linux -- clang or gcc
* MacOS -- Xcode (clang)
## Building
This library is not intended to stand alone. It is intended to be included in
a larger solution which uses [CMake](https://cmake.org/) to generate the build
system and build applications which will link with the library.
There are two distinct steps in the build process:
1. Generation of the build system, using CMake
2. Compiling, linking, etc., using CMake-compatible toolchain
### Prerequisites
* [CMake](https://cmake.org/) version 3.8 or newer
* C++11 toolchain compatible with CMake for your development platform (e.g.
[Visual Studio](https://www.visualstudio.com/) on Windows)
### Build system generation
Generate the build system using [CMake](https://cmake.org/) from the solution
root. For example:
```bash
mkdir build
cd build
cmake -G "Visual Studio 15 2017" -A "x64" ..
```
### Compiling, linking, et cetera
Either use [CMake](https://cmake.org/) or your toolchain's IDE to build.
For [CMake](https://cmake.org/):
```bash
cd build
cmake --build . --config Release
```
## License
Licensed under the [MIT license](LICENSE.txt).