mirror of
https://github.com/RGBCube/serenity
synced 2025-07-28 00:17:45 +00:00
LibVT: Implement new ANSI escape sequence parser
This commit replaces the former, hand-written parser with a new one that can be generated automatically according to a state change diagram. The new `EscapeSequenceParser` class provides a more ergonomic interface to dealing with escape sequences. This interface has been inspired by Alacritty's [vte library](https://github.com/alacritty/vte/). I tried to avoid changing the application logic inside the `Terminal` class. While this code has not been thoroughly tested, I can't find regressions in the basic command line utilities or `vttest`. `Terminal` now displays nicer debug messages when it encounters an unknown escape sequence. Defensive programming and bounds checks have been added where we access parameters, and as a result, we can now endure 4-5 seconds of `cat /dev/urandom`. :D We generate EscapeSequenceStateMachine.h when building the in-kernel LibVT, and we assume that the file is already in place when the userland library is being built. This will probably cause problems later on, but I can't find a way to do it nicely.
This commit is contained in:
parent
1b347298f1
commit
be519022c3
11 changed files with 707 additions and 571 deletions
|
@ -1,7 +1,11 @@
|
|||
# FIXME: this assumes that EscapeSequenceStateMachine.h has been
|
||||
# already generated when the kernel was built. This will probably
|
||||
# mess builds up later on.
|
||||
set(SOURCES
|
||||
Line.cpp
|
||||
Terminal.cpp
|
||||
TerminalWidget.cpp
|
||||
EscapeSequenceParser.cpp
|
||||
)
|
||||
|
||||
serenity_lib(LibVT vt)
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue