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--
-- string.lua
-- Additions to Lua's built-in string functions.
-- Copyright (c) 2002-2008 Jason Perkins and the Premake project
--
--
-- Returns an array of strings, each of which is a substring of s
-- formed by splitting on boundaries formed by `pattern`.
--
function string.explode(s, pattern, plain)
if (pattern == '') then return false end
local pos = 0
local arr = { }
for st,sp in function() return s:find(pattern, pos, plain) end do
table.insert(arr, s:sub(pos, st-1))
pos = sp + 1
end
table.insert(arr, s:sub(pos))
return arr
end
--
-- Find the last instance of a pattern in a string.
--
function string.findlast(s, pattern, plain)
local curr = 0
repeat
local next = s:find(pattern, curr + 1, plain)
if (next) then curr = next end
until (not next)
if (curr > 0) then
return curr
end
end
--
-- Returns true if `haystack` starts with the sequence `needle`.
--
function string.startswith(haystack, needle)
return (haystack:find(needle, 1, true) == 1)
end
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