Difference between revisions of "String exploding"
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Revision as of 01:17, 6 April 2015
This function adds the ability to explode strings in Lua.
function string.explode(str, div)
assert(type(str) == "string" and type(div) == "string", "invalid arguments")
local o = {}
while true do
local pos1,pos2 = str:find(div)
if not pos1 then
o[#o+1] = str
break
end
o[#o+1],str = str:sub(1,pos1-1),str:sub(pos2+1)
end
return o
end
Have an example:
tbl = string.explode("foo bar", " ")
print(tbl[1]) --> foo
-- since we added explode to the string table, we can also do this:
str = "foo bar"
tbl2 = str:explode(" ")
print(tbl2[2]) --> bar
-- to restore the original string, we can use Lua's table.concat:
original = table.concat(tbl, " ")
print(original) --> foo bar