[Freeswitch-users] Lua XML parser

[Michael Collins]

I discuss basic pattern matching in Lua in chapter 7 of our book. I'm
thinking you'll need to do something like this. Assume that variable
"nuance_res" contains the blurb that you posted below.

freeswitch.consoleLog("INFO","Result is:\n" .. nuance_res .. "\n")





confidence = string.gsub(nuance_res,'.-confidence="(0\.%d%d).+',"%1")


freeswitch.consoleLog("NOTICE","Confidence: " .. confidence .. "\n")





input = string.gsub(nuance_res,'.-<input mode=".-">(.-)<.+',"%1")


freeswitch.consoleLog("NOTICE","Input: " .. input .. "\n")





instance = string.gsub(nuance_res,'.-<instance>(.-)<.+',"%1")


freeswitch.consoleLog("NOTICE","Instance: " .. instance .. "\n")

-MC

On Sun, Sep 11, 2011 at 11:26 PM, Glen Ganderton <
Glen.Ganderton at premier.com.au> wrote:

> Hey Guys,****
>
> ** **
>
> I’m currently trying to create a basic IVR with voice recognition (just a
> simple YES or NO response). I have successfully configured the freeswitch
> MRCP client to connect to my nuance MRCP server and I successfully get a
> responses from the server. Now what I need to do is process the response in
> my freeswitch lua script. The nuance box returns the following:****
>
> ** **
>
>
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> ****
>
> Completion-Cause: 000 success****
>
> Content-Type: application/nlsml+xml****
>
> Content-Length: 178****
>
> ** **
>
> <?xml version='1.0'?><result><interpretation
> grammar="session:nuance5-mrcp2" confidence="0.99"><input
> mode="speech">yes</input><instance>true</instance></interpretation></result>
> ****
>
> ** **
>
> Now what I want to be able to do is parse the XML in my lua script so that
> I can simply have the XML stored in some variables:****
>
> ** **
>
> Eg.****
>
> ** **
>
> Confidence = 0.99****
>
> Input = yes****
>
> Instance =  true****
>
> ….etc.****
>
> ** **
>
> I am just starting to learn lua and am unable to do this myself. I have
> seen a few scripts online to parse XML for lua but none seem to work
> correctly (maybe they are meant for different format..not sure).****
>
> ** **
>
> If anybody could point me in the right direction or write some sample code
> for what I need to do that would be a great help.****
>
> ** **
>
> Thanks in advance.****
>
> ** **
>
> -Glen****
>
>
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