CODEWITHSUNDEEP
lua
KROKS
KROKS

Reputation: 13

Lua implementation of *

How can I implement vba-like symbol * in Lua? I want to compare pattern like "aabb*" in strings "aaabbb" (false) or "aabbds" (true).

Upvotes: 1

Views: 96

Answers (1)

Egor Skriptunoff
Egor Skriptunoff

Reputation: 974

function string.like(text, pattern)
   pattern = "^"..pattern:gsub("*", "\0"):gsub("%p", "%%%0"):gsub("%z", ".-").."$"
   return text:find(pattern) and true or false
end

Usage is local bool_result = str:like(pattern)

local pattern = "aabb*"

print(("aaabbb"):like(pattern))   --> false
print(("aabbds"):like(pattern))   --> true

Upvotes: 2

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