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local exports = {}
local lpeg = require 'lpeg'
local split_grammar = {}
exports.rspamd_str_split = function(s, sep)
local gr = split_grammar[sep]
if not gr then
local _sep = lpeg.P(sep)
local elem = lpeg.C((1 - _sep)^0)
local p = lpeg.Ct(elem * (_sep * elem)^0)
gr = p
split_grammar[sep] = gr
end
return gr:match(s)
end
local space = lpeg.S' \t\n\v\f\r'
local nospace = 1 - space
local ptrim = space^0 * lpeg.C((space^0 * nospace^1)^0)
local match = lpeg.match
exports.rspamd_str_trim = function(s)
return match(ptrim, s)
end
-- Robert Jay Gould http://lua-users.org/wiki/SimpleRound
exports.round = function(num, numDecimalPlaces)
local mult = 10^(numDecimalPlaces or 0)
return math.floor(num * mult) / mult
end
exports.template = function(tmpl, keys)
local var_lit = lpeg.P { lpeg.R("az") + lpeg.R("AZ") + lpeg.R("09") + "_" }
local var = lpeg.P { (lpeg.P("$") / "") * ((var_lit^1) / keys) }
local var_braced = lpeg.P { (lpeg.P("${") / "") * ((var_lit^1) / keys) * (lpeg.P("}") / "") }
local template_grammar = lpeg.Cs((var + var_braced + 1)^0)
return lpeg.match(template_grammar, tmpl)
end
return exports
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