O yaml-cpp é um parser para YAML com C++.
Com ele você consegue ler arquivos YAML de forma rápida através do código C++.
Instalação
Para instalar basta clonar com git, compilar e instalar com CMake, rode os comando abaixo:
git clone https://github.com/jbeder/yaml-cpp
cd yaml-cpp
cmake -B build .
cmake --build build
sudo cmake --install buildVeja aqui os arquivos que são instalados
-- Install configuration: ""
-- Installing: /usr/local/lib/libyaml-cpp.a
-- Up-to-date: /usr/local/include
-- Installing: /usr/local/include/yaml-cpp
-- Installing: /usr/local/include/yaml-cpp/emitterstyle.h
-- Installing: /usr/local/include/yaml-cpp/eventhandler.h
-- Installing: /usr/local/include/yaml-cpp/binary.h
-- Installing: /usr/local/include/yaml-cpp/emitterdef.h
-- Installing: /usr/local/include/yaml-cpp/yaml.h
-- Installing: /usr/local/include/yaml-cpp/null.h
-- Installing: /usr/local/include/yaml-cpp/contrib
-- Installing: /usr/local/include/yaml-cpp/contrib/anchordict.h
-- Installing: /usr/local/include/yaml-cpp/contrib/graphbuilder.h
-- Installing: /usr/local/include/yaml-cpp/ostream_wrapper.h
-- Installing: /usr/local/include/yaml-cpp/anchor.h
-- Installing: /usr/local/include/yaml-cpp/parser.h
-- Installing: /usr/local/include/yaml-cpp/emitfromevents.h
-- Installing: /usr/local/include/yaml-cpp/emittermanip.h
-- Installing: /usr/local/include/yaml-cpp/traits.h
-- Installing: /usr/local/include/yaml-cpp/exceptions.h
-- Installing: /usr/local/include/yaml-cpp/fptostring.h
-- Installing: /usr/local/include/yaml-cpp/node
-- Installing: /usr/local/include/yaml-cpp/node/parse.h
-- Installing: /usr/local/include/yaml-cpp/node/type.h
-- Installing: /usr/local/include/yaml-cpp/node/ptr.h
-- Installing: /usr/local/include/yaml-cpp/node/node.h
-- Installing: /usr/local/include/yaml-cpp/node/convert.h
-- Installing: /usr/local/include/yaml-cpp/node/impl.h
-- Installing: /usr/local/include/yaml-cpp/node/emit.h
-- Installing: /usr/local/include/yaml-cpp/node/iterator.h
-- Installing: /usr/local/include/yaml-cpp/node/detail
-- Installing: /usr/local/include/yaml-cpp/node/detail/memory.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/node.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/impl.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/node_data.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/node_iterator.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/iterator_fwd.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/iterator.h
-- Installing: /usr/local/include/yaml-cpp/node/detail/node_ref.h
-- Installing: /usr/local/include/yaml-cpp/dll.h
-- Installing: /usr/local/include/yaml-cpp/stlemitter.h
-- Installing: /usr/local/include/yaml-cpp/noexcept.h
-- Installing: /usr/local/include/yaml-cpp/depthguard.h
-- Installing: /usr/local/include/yaml-cpp/mark.h
-- Installing: /usr/local/include/yaml-cpp/emitter.h
-- Installing: /usr/local/lib/cmake/yaml-cpp/yaml-cpp-targets.cmake
-- Installing: /usr/local/lib/cmake/yaml-cpp/yaml-cpp-targets-noconfig.cmake
-- Installing: /usr/local/lib/cmake/yaml-cpp/yaml-cpp-config.cmake
-- Installing: /usr/local/lib/cmake/yaml-cpp/yaml-cpp-config-version.cmake
-- Installing: /usr/local/lib/pkgconfig/yaml-cpp.pcExemplo básico
Suponhamos que você possua esse arquivo de exemplo do tipo YAML: example.yaml:
pessoa:
nome: Marcos
sobrenome: Oliveira
idade: 39
profissao: Programador
altura: 1.73E aqui o código C++ que irá fazer o parser: main.cpp
#include <print>
#include <fstream>
#include <yaml-cpp/yaml.h>
int main(){
YAML::Node doc = YAML::LoadFile("./example.yaml");
YAML::Node pessoa = doc["pessoa"];
std::string nome = pessoa["nome"].as<std::string>();
std::string sobrenome = pessoa["sobrenome"].as<std::string>();
int idade = pessoa["idade"].as<int>();
std::string profissao = pessoa["profissao"].as<std::string>();
double altura = pessoa["altura"].as<double>();
std::println("Nome: {}", nome);
std::println("Sobrenome: {}", sobrenome);
std::println("Idade: {}", idade);
std::println("Profissão: {}", profissao);
std::println("Altura: {}", altura);
return EXIT_SUCCESS;
}Lembrando que nesse exemplo usei std::println em vez de
iostream.
Compile usando a flag para o yaml-cpp:
g++ main.cpp -lyaml-cppE após rodar o binário a saída será:
Nome: Marcos
Sobrenome: Oliveira
Idade: 39
Profissão: Programador
Altura: 1.73Fácil, né?! Para mais informações acesse o repositório e os exemplos para uso da API.
