addtofile() function in IPCop's library.sh

Hi,

Was wondering if someone could help me out here with a bit of advice using
sed?

I have been taking a look at creating some basic installation packages for
some of my modifications, and looking in /usr/lib/ipcop/library.sh I can see
the addtofile() function.

Got this working fine where I only search for a string (or part of) from a
single line.

I notice that this function uses the command:

 

                sed -i -e "/${4}/ r addtofile" ${3}

 

which adds your content after the string you searched for.

 

Got two questions...

1)      How do I alter this function to add my content _before_ the string I
searched for?

2)      How can I search for a string that spans several lines, and
subsequently place my content before or after it?

 

Basically I want to get the addtofile function to be able to search for a
string pattern that may span several lines, and add a 5 paramter to specify
whether you want the section to be added before or after the position found.

 

Thanks in advance...

John Campbell

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