url_parse_open_graph

Download OpenGraph data from a URL to generate link previews

The Open Graph protocol

https://ogp.me/

Open Graph is an internet protocol to standardize the use of metadata within a webpage to represent the content of a page. The four basic open graph tags that are required for each page are og:title, og:type, og:image, and og:url

Usage

url_parse_open_graph is a command line client. Usage is:

./url_parse_open_graph [OPTIONS]
[OPTIONS]:
  --uri <URL> URL to parse (e.g https://example.com/index.html)
  --file <FILE> Local FILE to parse

Example

./url_parse_open_graph --uri https://example.com/index.html

HTTP request

GET /index.html HTTP/1.1
Host: example.com
Connection: close

Dependencies

• CMake [https://cmake.org/]
• OpenSSL [https://www.openssl.org/] (Windows build with ext/openssl-3.0.5/build.bat)
• Asio [https://think-async.com/Asio/AsioStandalone.html]
• JSON Modern C++ [https://json.nlohmann.me/]

Building

cmake -S . -B build
cd build
cmake --build . 

To install dependencies on Mac and Linux

Mac

brew install cmake
brew install openssl

Linux

sudo apt-get install cmake
sudo apt-get install libssl-dev