如何使用XSLT v1.0插入文本而不是使用XSLT v2.0正则表达式？

I have an xml file which describes (among other things) elements with attribute values that describe fully qualified java class names. I am trying to write an XSLT transformation to modify the class names described in this file, such that (for example) ocurrances of I have an xml file which describes (among other