help with splitting strings
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- Subject: help with splitting strings
- From: Merick <Merick_TeVaran@...>
- Date: 2007年10月21日 19:36:41 -0500
I'm using this function from the lua users wiki:
function Split(str, delim, maxNb) -- from:
http://lua-users.org/wiki/StringRecipes
-- Eliminate bad cases...
if string.find(str, delim) == nil then
return { str }
end
if maxNb == nil or maxNb < 1 then
maxNb = 0 -- No limit
end
local result = {}
local pat = "(.-)" .. delim .. "()"
local nb = 0
local lastPos
for part, pos in string.gfind(str, pat) do
nb = nb + 1
result[nb] = part
lastPos = pos
if nb == maxNb then break end
end
-- Handle the last field
if nb ~= maxNb then
result[nb + 1] = string.sub(str, lastPos)
end
return result
end
If I do this:
args = Split("byval filename as zstring ptr, byval force_channels as
integer, byval reuse_texture_ID as uinteger, byval flags as uinteger", ",")
then it works as expected and splits the string at the commas and
returns a table with the segments. However, if I try to do it again like
this:
words = Split(args[1], " ")
or
words = Split(args[1], "%s")
then what I get is a table with each element set to nil