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Code Issues Releases Wiki Activity

Improve argument validation in colors.fromBlit

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This commit is contained in:
Erlend 2023-05-17 20:20:53 +02:00
parent 25ab7d0dcb
commit 952674a161
1 changed files with 5 additions and 5 deletions

10
projects/core/src/main/resources/data/computercraft/lua/rom/apis/colors.lua

@ -372,7 +372,7 @@ end
--- Converts the given paint/blit hex character (0-9a-f) to a color.
--
-- This is equivalent to converting the hex character to decimal and then 2 ^ decimal
-- This is equivalent to converting the hex character to a number and then 2 ^ decimal
--
-- @tparam string hex The paint/blit hex character to convert
-- @treturn number The color
@ -387,9 +387,9 @@ end
function fromBlit(hex)
expect(1, hex, "string")
if hex:find("[^0-9a-f]") or hex == "" then
return
end
if #hex ~= 1 then return nil end
local value = tonumber(hex, 16)
if not value then return nil end
return math.floor(2 ^ tonumber(hex, 16))
return 2 ^ value
end