Rewinding std::cout to go back to the beginning of a line
Solution 1
"\r" should work for both windows and Mac OS X.
Something like:
std::cout << "will not see this\rwill see this" << std::flush;
std::cout << std::endl; // all done
Solution 2
I don't have access to a mac, but from a pure console standpoint, this is going to be largely dependent on how it treats the carriage return and line-feed characters. If you can literally send one or the other to the console, you want to send just a carriage return.
I'm pretty sure Mac treats both carriage returns and line-feeds differently than *nix & windows.
If you're looking for in-place updates (e.g. overwrite the current line), I'd recommend looking at the curses
lib. This should provide a platform independent means of doing what you're looking for. (because, even using standard C++, there is no platform independent means of what you're asking for).
Comments
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fbrereto about 4 years
I'm writing a command-line tool for Mac OS X that processes a bunch of files. I would like to show the user the current file being processed, but do not want a bazillion files polluting the terminal window.
Instead I would like to use a single line to output the file path, then reuse that line for the next file. Is there a character (or some other code) to output to
std::cout
to accomplish this?Also, if I wanted to re-target this tool for Windows, would the solution be the same for both platforms?