From 530b6599ffed4ca9ec4cb3a38d27e86b10d8d145 Mon Sep 17 00:00:00 2001
From: XeonSquared <redtailedairways@gmail.com>
Date: Thu, 23 Nov 2023 06:44:31 +1000
Subject: [PATCH] add mtmenu library. undocumented and stuff. you'll work it
 out.

---
 mtmenu/mtmenu.lua | 85 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 mtmenu/mtmenu.lua

diff --git a/mtmenu/mtmenu.lua b/mtmenu/mtmenu.lua
new file mode 100644
index 0000000..c76f3e6
--- /dev/null
+++ b/mtmenu/mtmenu.lua
@@ -0,0 +1,85 @@
+local event = require "event"
+local mtmenu = {}
+local mx, my
+
+local ssub = (unicode or {}).sub or string.sub
+
+function mtmenu.getScreenSize()
+ if mx and my then return mx, my end
+ io.write("\27[999;999H")
+ mx, my = mtmenu.getCursor()
+ return mx, my
+end
+
+function mtmenu.getCursor()
+ io.write("\27[6n")
+ local b = ""
+ repeat
+  b = b .. io.read(1)
+ until b:match("\27%[%d+;%d+R")
+ local y,x = b:match("\27%[(%d+);(%d+)R")
+ return tonumber(x), tonumber(y)
+end
+
+function mtmenu.setStatus(str)
+ local ox, oy = mtmenu.getCursor()
+ status = str
+ io.write(string.format("\27[%d;1H\27[0m\27[7m\27[2K%s\27[0m\27[%i;%iH", my, status, oy, ox))
+end
+
+function mtmenu.menu(items, state)
+ local mx, my = mtmenu.getScreenSize()
+ local state = state or {1,1}
+ local i, si = state[1], state[2]
+ while true do
+  if si > i - 3 then
+   si = math.max(1, i-5)
+  elseif i > (si+my) - 6 then
+   si = math.min(i - (my-3) + 5, #items - (my - 3))
+  end
+  i = math.max(1,math.min(#items, i))
+  print(string.format("\27[H\27[0m\27[7m\27[2K%s\27[0m", items.header or ""))
+  for j = si, (si+my)-3 do
+   print((i==j and "\27[7m" or "\27[0m") .. "\27[2K" .. (items[j] or ""):sub(1,mx))
+  end
+  mtmenu.setStatus(items.status)
+  local _,_,ch,co = event.pull(60,"key_down")
+  ch=string.char(ch or 0)
+  if co == 208 then -- down
+   i = i + 1
+  elseif co == 200 then -- up
+   i = i - 1
+  elseif co == 201 then -- pgdn
+   i = i - (my - 2)
+  elseif co == 209 then -- pgdn
+   i = i + my - 2
+  else
+   return i, ch, co, {i, si}
+  end
+ end
+end
+
+function mtmenu.popup(str,title,state)
+ local mx, my = mtmenu.getScreenSize()
+ local len = (unicode or {}).len or string.len
+ if title then
+  title=string.format("[%s]",title or "")
+ else
+  title = ""
+ end
+ local width, height, content = 0, 0, {}
+ for line in str:gmatch("[^\n]*") do
+  height = height + 1
+  width = math.max(width,len(line))
+  content[#content+1] = line
+ end
+ if width < 1 or height < 1 then return false end
+ local startx,starty = ((mx//2)-(width//2))-2, ((my//2)-(height//2))-2
+ io.write(string.format("\27[%d;%dH╒═%s%s╕",starty,startx,title,("═"):rep((width+1)-len(title))))
+ for k,v in pairs(content) do
+  io.write(string.format("\27[%d;%dH│ %s%s │",starty+k,startx,v,(" "):rep(width-len(v))))
+ end
+ io.write(string.format("\27[%d;%dH┕%s┙",starty+1+#content,startx,("━"):rep(width+2)))
+end
+
+return mtmenu