clears your terminal screen but rainbow
based on the old X68000 niji
build via CMake. release mode via -DCMAKE_BUILD_TYPE=Release.
if building via MinGW cut the binary size in 4 by stripping it afterward.
currently this functions on Windows by using ReadConsoleOutputCharacterW to get the current state of the screen. for a
Linux version, this would have to be replaced with
- DECRQCRA, to retrieve the hash of a character+formatting at a location
- DECSERA, to replace the formatting of a character at a location with known formatting, to crack the character hash
- BSU/DSU (DECSET 2026), to prevent the screen flashes (to mimic
WriteConsoleW's single-chunk behavior)
Windows Terminal's DECRQCRA is turned off by default, reasonably so as it allows malicious processes to see anything in
the terminal. I believe (but am not sure) that the kitty and alacritty terminals support both DECRQCRA and
synchronized updates; if I could test them I would add CMake options for choosing the target environment.
additionally, the Windows version uses DwmFlush to do a small frame wait, rather than deal with the 15ms Windows
scheduler resolution. due to Linux scheduling being higher-resolution, this could probably be replaced with some sort of
sleep.
DECCARA does not support changing colors: it supports a finite subset of SGI commands, of which the only one even relevant to our cause is text inversion. if there were to be a more "modern" equivalent for DECCARA that could change the colors of a rectangle in the console, this program could be achieved without any sort of security holes.