[Freeswitch-users] LUA pattern again

[Michael Collins]

On Thu, Apr 21, 2011 at 10:41 AM, Boris Kovalenko <boris at tagnet.ru> wrote:

>  No success. I use it with string.match function, is it right?
>
> Okay, this is a limitation in Lua's pattern matching. Evidently you cannot
use ? on a group like you can in PCRE. So in this case you can use an API
call to regex. I wrote a mini test script to demonstrate.

Have fun. :)
-MC

--


-- pattern.lua


--


-- Simple Lua pattern testing





api = freeswitch.API();





str_pattern = "(3435)230%d%d%d";


my_str = "73435230111"





str_regex = "^(7?3435)?230\\d\\d\\d$";


res = api:execute("regex",my_str .. "|" .. str_regex);


stream:write("string: " .. my_str .. ", regex result: " .. res .. "\n");





my_str = "3435230111";


res = api:execute("regex",my_str .. "|" .. str_regex);


stream:write("string: " .. my_str .. ", regex result: " .. res .. "\n");





my_str = "230111";


res = api:execute("regex",my_str .. "|" .. str_regex);


stream:write("string: " .. my_str .. ", regex result: " .. res .. "\n");





my_str = "987230111";


res = api:execute("regex",my_str .. "|" .. str_regex);


stream:write("string: " .. my_str .. ", regex result: " .. res .. "\n");





Output:
freeswitch at internal> lua pattern.lua
string: 73435230111, regex result: true
string: 3435230111, regex result: true
string: 230111, regex result: true
string: 987230111, regex result: false
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