diff options
Diffstat (limited to 'internal.lua')
| -rw-r--r-- | internal.lua | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/internal.lua b/internal.lua index 7724c9d..2323e07 100644 --- a/internal.lua +++ b/internal.lua @@ -1,3 +1,17 @@ +-- This pair of encoding functions is used where variable text must go in +-- button names, where the text might contain formspec metacharacters. +-- We can escape button names for the formspec, to avoid screwing up +-- form structure overall, but they then don't get de-escaped, and so +-- the input we get back from the button contains the formspec escaping. +-- This is a game engine bug, and in the anticipation that it might be +-- fixed some day we don't want to rely on it. So for safety we apply +-- an encoding that avoids all formspec metacharacters. +function unified_inventory.mangle_for_formspec(str) + return string.gsub(str, "([^A-Za-z0-9])", function (c) return string.format("_%d_", string.byte(c)) end) +end +function unified_inventory.demangle_for_formspec(str) + return string.gsub(str, "_([0-9]+)_", function (v) return string.char(v) end) +end function unified_inventory.get_formspec(player, page) if not player then @@ -71,7 +85,7 @@ function unified_inventory.get_formspec(player, page) ..(8.2 + x * 0.7).."," ..(1 + y * 0.7)..";.81,.81;" ..name..";item_button_" - ..name..";]" + ..unified_inventory.mangle_for_formspec(name)..";]" list_index = list_index + 1 end end |