RosettaCodeData/Task/Tokenize-a-string-with-esca.../Lua/tokenize-a-string-with-esca...

34 lines
868 B
Lua

function tokenise (str, sep, esc)
local strList, word, escaped, ch = {}, "", false
for pos = 1, #str do
ch = str:sub(pos, pos)
if ch == esc then
if escaped then
word = word .. ch
escaped = false
else
escaped = true
end
elseif ch == sep then
if escaped then
word = word .. ch
escaped = false
else
table.insert(strList, word)
word = ""
end
else
escaped = false
word = word .. ch
end
end
table.insert(strList, word)
return strList
end
local testStr = "one^|uno||three^^^^|four^^^|^cuatro|"
local testSep, testEsc = "|", "^"
for k, v in pairs(tokenise(testStr, testSep, testEsc)) do
print(k, v)
end