Get rid of the weird old signature:
- int StringType::to_int(bool& ok) const
And replace it with sensible new signature:
- Optional<int> StringType::to_int() const
You can now request an update of the terminal's window progress by
sending this escape sequence:
<esc>]9;<value>;<max_value>;<escape><backslash>
I'm sure we can find many interesting uses for this! :^)
To conserve memory, we now use byte storage for terminal lines until we
encounter a non-ASCII codepoint. At that point, we transparently switch
to UTF-32 storage for that one line.
Instead of relying on the GUI code to handle UTF-8, we now process
and parse the incoming data into 32-bit codepoints ourselves.
This means that you can now show emojis in the terminal and they will
only take up one character cell each. :^)
The buffer positions referred to by a VT::Position now include history
scrollback, meaning that a VT::Position with row=0 is at the start of
the history.
The active terminal buffer keeps moving in VT::Position coordinates
whenever we scroll. This allows selection to follow history. It also
allows us to click hyperlinks in history.
Fixes#957.
We should rename all of these functions to match the real VT100 names.
This will make it 100% easier to work on LibVT.
For reference: https://vt100.net/docs/vt100-ug/
The curious "stomp" state occurs when you type your way all the way
over to the right side of the terminal buffer, and we "stomp" once on
the very last column, before jumping to the next line.
We should never go into "stomp" state in response to programmatically
setting the cursor position. This fixes a small artifact in vttest.
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.
For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.
Going forward, all new source files should include a license header.
Using int was a mistake. This patch changes String, StringImpl,
StringView and StringBuilder to use size_t instead of int for lengths.
Obviously a lot of code needs to change as a result of this.
Now that we're bringing back the in-kernel virtual console, we should
move towards having a single implementation of terminal emulation.
This patch rips out the emulation code from the Terminal application
and turns it into the beginnings of LibVT.
The basic design idea is that users of VT::Terminal will implement and
provide a VT::TerminalClient subclass to handle presentation-specific
things. We'll need to iterate on this, but it's a start. :^)
