42 lines
1.1 KiB
Lua
42 lines
1.1 KiB
Lua
|
-- wrap utf8.sub(str,head_index, tail_index)
|
||
|
|
-- wrap string.split(str,sp,sp1)
|
||
|
|
-- string.utf8_len = utf8.len
|
||
|
|
-- string.utf8_offset= utf8.offset
|
||
|
|
-- string.utf8_sub= utf8.sub
|
||
|
|
function string.split(str, sp, sp1)
|
||
|
|
sp = type(sp) == "string" and sp or " "
|
||
|
|
if #sp == 0 then
|
||
|
|
sp = "([%z\1-\127\194-\244][\128-\191]*)"
|
||
|
|
elseif #sp == 1 then
|
||
|
|
sp = "[^" .. (sp == "%" and "%%" or sp) .. "]*"
|
||
|
|
else
|
||
|
|
sp1 = sp1 or "^"
|
||
|
|
str = str:gsub(sp, sp1)
|
||
|
|
sp = "[^" .. sp1 .. "]*"
|
||
|
|
end
|
||
|
|
|
||
|
|
local tab = {}
|
||
|
|
for v in str:gmatch(sp) do
|
||
|
|
table.insert(tab, v)
|
||
|
|
end
|
||
|
|
return tab
|
||
|
|
end
|
||
|
|
|
||
|
|
function utf8.gsub(str, si, ei)
|
||
|
|
local function index(ustr, i)
|
||
|
|
return i >= 0 and (ustr:utf8_offset(i) or ustr:len() + 1)
|
||
|
|
or (ustr:utf8_offset(i) or 1)
|
||
|
|
end
|
||
|
|
|
||
|
|
local u_si = index(str, si)
|
||
|
|
ei = ei or str:utf8_len()
|
||
|
|
ei = ei >= 0 and ei + 1 or ei
|
||
|
|
local u_ei = index(str, ei) - 1
|
||
|
|
return str:sub(u_si, u_ei)
|
||
|
|
end
|
||
|
|
|
||
|
|
string.utf8_len = utf8.len
|
||
|
|
string.utf8_offset = utf8.offset
|
||
|
|
string.utf8_sub = utf8.gsub
|
||
|
|
return true
|