[Freeswitch-users] regexp with LUA script

[Michael Collins]

I don't believe there is a way to pull multiple values back from the call to
api:execute. However, Lua has native pattern matching with captures. Here
are a few resources for you:

FreeSWITCH book, pages 149-151
http://www.lua.org/pil/20.3.html
http://www.lua.org/manual/5.1/manual.html#5.4.1

Here's a simple example that you can actually run with "luarun" if you want
to do some testing:

-- pattern.lua
data = "1234#5678";
_,_,var1,var2 = string.find(data,"(%d+)#(%d+)");
freeswitch.consoleLog("INFO","\ndata: " .. data .. "\nvar1: " .. var1 ..
"\nvar2: " .. var2 .. "\n");

Output:
freeswitch at internal> luarun pattern.lua
+OK

2011-04-18 08:28:49.242080 [INFO] switch_cpp.cpp:1197
data: 1234#5678
var1: 1234
var2: 5678

Have fun!
-MC

P.S. - I added some of this information to the wiki:
http://wiki.freeswitch.org/wiki/Mod_lua#Native_Lua_Pattern_Matching

On Mon, Apr 18, 2011 at 6:06 AM, Boris Kovalenko <boris at tagnet.ru> wrote:

> Hello!
>
>     How can I use regexp with LUA scripts? Yes, I found I may use
> api:execute('regex'....) but can't understand how to get matched strings
> from it. For example my re is (\d+)#(\d+) and I want to get $1 and $2 in
> some variables.
>
> --
> Regards,
> Boris
>
>
>
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