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minetest_ltool
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Check for invalid chars in axiom and rule sets

master
Wuzzy 2014-07-26 18:18:26 +02:00
parent 7707e23462
commit f6d516066a
1 changed files with 18 additions and 5 deletions
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23
init.lua
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@ -179,11 +179,24 @@ end
function ltool.evaluate_edit_fields(fields)
local treedef = {}
treedef.axiom = fields.axiom
treedef.rules_a = fields.rules_a
treedef.rules_b = fields.rules_b
treedef.rules_c = fields.rules_c
treedef.rules_d = fields.rules_d
-- Validation helper: Checks for invalid characters for the fields “axiom” and the 4 rule sets
local v = function(str)
local match = string.match(str, "[^][abcdfABCDFGTR+-/*&^]")
if(match==nil) then
return true
else
return false
end
end
if(v(fields.axiom) and v(fields.rules_a) and v(fields.rules_b) and v(fields.rules_c) and v(fields.rules_d)) then
treedef.rules_a = fields.rules_a
treedef.rules_b = fields.rules_b
treedef.rules_c = fields.rules_c
treedef.rules_d = fields.rules_d
treedef.axiom = fields.axiom
else
return nil, "The axiom or one of the rule sets contains at least one invalid character.\nSee the cheat sheet for a list of allowed characters."
end
treedef.trunk = fields.trunk
treedef.leaves = fields.leaves
treedef.leaves2 = fields.leaves2