get("#388") -- rect functions

get("#348") -- rgb functions

get("#356") -- num2hex

get("#430") -- makeIcon

get("#428") -- findContents

get("#431") -- LXTerminal character reference

get("#433") -- iconDiff

function getIconSize(icon)

  local i = 1

  while string.sub(icon, i, i) ~= '.' do

    i = i+1

  end

  local w = i-1

  -- #icon+1 = (w+1)*h

  -- => h = (#icon+1)/(w+1)

  local h = (#icon+1)/(w+1)

  return w, h

end

fw_, fh_ = getIconSize(characterReference[1][2])

print("fw/fh", fw_, fh_)

function recognizeChar(icon)

  local best, min

  for _, ic in ipairs(characterReference) do

    local c, reficon = unpack(ic)

    local diff

    if min ~= nil then

      diff = iconDiffWithLimit(icon, reficon, min, fw_, fh_)

    else

      diff = iconDiff(icon, reficon)

    end

    --print("c", c, "diff", diff, "reficon", reficon)

    if diff ~= nil and (min == nil or diff < min) then

      best, min = c, diff

    end

  end

  return best, min

end

problem = findContents()

if problem then return --[[problem]] end

fw, fh = 8, 17 -- font width/height

tw = math.floor((contents_x2-contents_x1)/fw+0.5)

th = math.floor((contents_y2-contents_y1)/fh+0.5)

print("Terminal size: "..tw.."*"..th)

tbl = {}

for y = 0, th-1 do

  line = {}

  for x = 0, tw-1 do

    xx, yy = contents_x1+x*fw+1, contents_y1+y*fh

    cropped = {width=fw-1, height=fh-1,

      getInt = function(x, y) return img.getInt(xx+x, yy+y) end}

    local icon = makeIcon(cropped)

    local c, diff = recognizeChar(icon)

    if maxdiff == nil or diff > maxdiff then

      maxdiff, maxc = diff, c

    end

    --print("c: "..tostring(c)..", diff: "..tostring(diff)..", icon: "..icon)

    table.insert(line, c or "?")

  end

  table.insert(tbl, table.concat(line))

end

print("maxdiff", maxdiff, "c", maxc)

return "Screen text:\n"..table.concat(tbl, "\n")