util.lua

--[[
# Copyright (c) 2010 Joshua Simmons <simmons.44@gmail.com>
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local error = error
local string = string

module 'mongrel2.util'

function split(str, delim, count, no_patterns)
    if delim == '' then error('invalid delimiter', 2) end
    count = count or 0

    local next_delim = 1
    local i = 1
    local results = {}

    repeat
        local start, finish = str:find(delim, next_delim, no_patterns)
        if start and finish then
            results[i] = str:sub(next_delim, start - 1)
            next_delim = finish + 1
        else
            break
        end
        i = i + 1
    until i == count

    results[i] = str:sub(next_delim)

    return results
end