Parametrize the stream where the progress bar display goes

[Tomasz Melcer]

Hi, it would be nice if one could set the stream that is used for displaying the progress bar. std::cout can't always be used. For example, in applications whose stdout is then piped into something else it would be desirable to use std::cerr for progress bars. In my case, Rcpp modules expect printing to be done through a special Rcpp::Rcout object, as opposed to std::cout.

Thank you!

[Pranav]

This is already supported. Example.

You can pass a stream option to the constructor.

[Zhiyuan Ma]

Hi, I came across this lib and would like to try it. However, I am currently writing the progress bar info using spdlog logging facilities, I was wondering if this lib supports setting custom handlers other than the mandatory "stream" option.

Something like this would be great:

  auto logger = spdlog::default_logger;

  ProgressBar bar{
      option::BarWidth{50},
      option::Start{"["},
      option::Fill{"="},
      option::Lead{">"},
      option::Remainder{" "},
      option::End{"]"},
      option::PostfixText{"Getting started"},
      option::ForegroundColor{indicators::Color::green},
      option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}},
      option::Handler{[&logger] (auto&&  pbar_str) {logger.info("{}", pbar_str;)}};

where pbar_str would be the rendered pbar content that get sent to the stream normally.