sipscan.lua
-- another SIP example, shows how an awkward log file format -- can be parsed. It also prints out the actual Lua string -- pattern generated: -- SYNC%s*%[([+%-%d]%d*)%]%s*([+%-%d]%d*)%s*([+%-%d]%d*) require 'pl' s = [[ SYNC [1] 0 547 (14679 sec) SYNC [2] 0 555 (14679 sec) SYNC [3] 0 563 (14679 sec) SYNC [4] 0 571 (14679 sec) SYNC [5] -1 580 (14679 sec) SYNC [6] 0 587 (14679 sec) ]] local first = true local start local res = {} local pat = 'SYNC [$i{seq}] $i{diff} $i{val}' print(sip.create_pattern(pat)) local match = sip.compile(pat) for line in stringx.lines(s) do if match(line,res) then if first then expected = res.val first = false end print(res.val,expected - res.val) expected = expected + 8 end end