# BibLaTeX: Rename author name on the fly

I'm using biblatex (backend: biber) and bibliography categories in order to construct automatically a bibliography of all my publications. In principle everything works fine. I just would like to shorten my name in the bibliography since it appears quite oftenly (in order to show also the names of my co-authors I still need to output the names). Here is the relevant name-filter I use:

\DeclareBibliographyCategory{catname}%%%%%%%%%%%%%%%%%%%%%
\newcommand*{\mknamesignature}[5]{\def#1{#2|||}}%%%%%%%%%%
\mknamesignature{\highlightname}{Surname}{Prename}{}%%%%%%
{}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\DeclareIndexNameFormat{catname}%%%%%%%%%%%%%%%%%%%%%%%%%%
{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\mknamesignature{\currentsignature}{#1}{#3}{#5}{#7}%%%
\ifdefequal{\highlightname}{\currentsignature}%%%%%%%%
{}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\AtDataInput{\indexnames[catname][1-99]{author}}%%%%%%%%%%


I then output the category just by:

\printbibliography[category=catname]


Is there a way to change the name of the entries added on the fly (of course not in the bibtex-file)? So, if my bibliography shows "Surname, Prename ..." I'd like something like "SP ...".

According to Guido's suggestion I use the following modified code now (of course it also "initializes" all other prename- and surname entries, but for my purpose it works):

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Replace my name in the bib by initials on the fly...%%%%%%%%%%%%%%%%%%%%
\usepackage{xstring}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\noexpandarg\exploregroups%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\makeatletter%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\let\orig@blx@bbl@entry\blx@bbl@entry%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\blx@bbl@entry#1\endentry{%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\StrSubstitute{#1}{Prename}{P\bibinitperiod}[\Result]%%%%%%%%%%%%%%%%%%%%
\expandafter\StrSubstitute\expandafter{\Result}{Surname}{S\bibinitperiod%
}[\Result]%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\expandafter\orig@blx@bbl@entry\Result\endentry}%%%%%%%%%%%%%%%%%%%%%%%%%
\makeatother%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


Thanks again and all the best, Christian