Integration

We have a requirement where we receive gzip files. These files are zipped file containing base64 binary format csv files. We would have to convert these files into XML format. Please let me know any of the following.

1. Is there any Xpath query or XSL function (somthing similar like doTranslateFromNative() ) to convert from gzip files to XML format.
2. If we need to unzip the zipfile outside fusion, then java code piece to unzip the gzip file. I guess after that we can use the usual doTranslateFromNative() function to translate to XML format, since after unzipping the gzip file, they are base64 binary formats.

Thanks in advance,
Toms