Help with sed

[Radim]

Hello,
I have such script:

(ONLY THIS THREE LINES ARE THE COMMANDS )
content=$(cat $script | sed  '/function codecs/,/fi;/d');
content=$(echo $content | sed -n '/mandriva/,/fi;}/p');
content=$(echo $content | sed  '/^\s*urpmi[:space:]--auto/p');

But it doesn't work as I would expected.

This is the text structure in file, that I need to filter:

(THIS IS A TEXT TO OUTPUT! TO FILTER)

function codecs {
if [ ".." == "mandriva" ]; then
  urpmi ... ;
  urpmi ... ;
if [ ".." == "kubuntu" ]; then
 deb  .... ; 
  deb ...;
fi;
}

function name1 {
if [ ".." == "mandriva" ]; then
  urpmi ... ;
  urpmi ... ;
if [ ".." == "kubuntu" ]; then
 deb  .... ; 
  deb ...;
fi;
fi;
}

function name2 {
if [ ".." == "mandriva" ]; then
urpmi ... ;
urpmi ... ;
fi;
}

What I try to do:
1) To delete the codecs function of the output.
2) To get the "if mandriva" block
3) from that block to get lines of urpmi

Anybody help?
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