Parse Json File

A console application that reads in a json file using the an external module and prints a single known property value.

Source

recipe.sml

The Recipe file that sets the standard name, type, version, as well as the single external dependency of the json11 project.

Name: 'Samples.Cpp.ParseJson'
Language: 'C++|0'
Version: 1.0.0
Type: 'Executable'
Dependencies: {
  Runtime: [
    'mwasplund|json11@1'
  ]
}

package-lock.sml

The package lock that was generated to capture the unique dependencies required to build this project.

Version: 5
Closures: {
  Root: {
    'C++': {
      'Samples.Cpp.ParseJson': { Version: './', Build: 'Build0', Tool: 'Tool0' }
      'mwasplund|json11': { Version: 1.1.5, Build: 'Build0', Tool: 'Tool0' }
    }
  }
  Build0: {
    Wren: {
      'Soup|Cpp': { Version: 0.16.0 }
    }
  }
  Tool0: {
    'C++': {
      'mwasplund|copy': { Version: 1.2.0 }
      'mwasplund|mkdir': { Version: 1.2.0 }
      'mwasplund|parse.modules': { Version: 1.2.0 }
    }
  }
}

message.json

A json file containing a single property containing a message for the application to print.

{
  "message": "Hello!"
}

main.cpp

A simple main method that reads the contents of a single json file, parses the json content and prints a single message from a known property.

#include <fstream>
#include <iostream>
#include <streambuf>
#include <string>

import json11;

int main()
{
  // Read in the contents of the json file
  auto jsonFile = std::ifstream("./message.json");
  auto jsonContent = std::string(
    std::istreambuf_iterator<char>(jsonFile),
    std::istreambuf_iterator<char>());

  // Parse the json
  std::string errorMessage;
  auto json = json11::Json::parse(jsonContent, errorMessage);

  // Print the single property value
  std::cout << "Message: " << json["message"].string_value() << std::endl;

  return 0;
}

.gitignore

A simple git ignore file to exclude all Soup build output.

out/