88 lines
2.6 KiB
Lua
88 lines
2.6 KiB
Lua
-- Licence: GPLv2 (MPL-2.0 is compatible, so we can use this here)
|
|
-- Source: https://stackoverflow.com/a/43582076/1460422
|
|
|
|
-- gsplit: iterate over substrings in a string separated by a pattern
|
|
--
|
|
-- Parameters:
|
|
-- text (string) - the string to iterate over
|
|
-- pattern (string) - the separator pattern
|
|
-- plain (boolean) - if true (or truthy), pattern is interpreted as a plain
|
|
-- string, not a Lua pattern
|
|
--
|
|
-- Returns: iterator
|
|
--
|
|
-- Usage:
|
|
-- for substr in gsplit(text, pattern, plain) do
|
|
-- doSomething(substr)
|
|
-- end
|
|
function worldeditadditions_core.gsplit(text, pattern, plain)
|
|
local splitStart, length = 1, #text
|
|
return function ()
|
|
if splitStart then
|
|
local sepStart, sepEnd = string.find(text, pattern, splitStart, plain)
|
|
local ret
|
|
if not sepStart then
|
|
ret = string.sub(text, splitStart)
|
|
splitStart = nil
|
|
elseif sepEnd < sepStart then
|
|
-- Empty separator!
|
|
ret = string.sub(text, splitStart, sepStart)
|
|
if sepStart < length then
|
|
splitStart = sepStart + 1
|
|
else
|
|
splitStart = nil
|
|
end
|
|
else
|
|
ret = sepStart > splitStart and string.sub(text, splitStart, sepStart - 1) or ''
|
|
splitStart = sepEnd + 1
|
|
end
|
|
return ret
|
|
end
|
|
end
|
|
end
|
|
|
|
|
|
--- Split a string into substrings separated by a pattern. -- Deprecated
|
|
-- @param text string The string to iterate over
|
|
-- @param pattern string The separator pattern
|
|
-- @param plain boolean If true (or truthy), pattern is interpreted as a
|
|
-- plain string, not a Lua pattern
|
|
-- @returns table A sequence table containing the substrings
|
|
function worldeditadditions_core.dsplit(text, pattern, plain)
|
|
local ret = {}
|
|
for match in worldeditadditions_core.gsplit(text, pattern, plain) do
|
|
table.insert(ret, match)
|
|
end
|
|
return ret
|
|
end
|
|
|
|
--- Split a string into substrings separated by a pattern.
|
|
-- @param str string The string to iterate over
|
|
-- @param dlm string The delimiter (separator) pattern
|
|
-- @param plain boolean If true (or truthy), pattern is interpreted as a
|
|
-- plain string, not a Lua pattern
|
|
-- @returns table A sequence table containing the substrings
|
|
function worldeditadditions_core.split(str,dlm,plain)
|
|
local pos, ret = 0, {}
|
|
local ins, i = str:find(dlm,pos,plain)
|
|
-- "if plain" shaves off some time in the while statement
|
|
if plain then
|
|
while ins do
|
|
table.insert(ret,str:sub(pos,ins - 1))
|
|
pos = ins + #dlm
|
|
ins = str:find(dlm,pos,true)
|
|
end
|
|
else
|
|
while ins do
|
|
table.insert(ret,str:sub(pos,ins - 1))
|
|
pos = i + 1
|
|
ins, i = str:find(dlm,pos)
|
|
end
|
|
end
|
|
-- print(pos..","..#str)
|
|
if str:sub(pos,#str) ~= "" then
|
|
table.insert(ret,str:sub(pos,#str))
|
|
end
|
|
return ret
|
|
end
|