I have a bunch of automatically generated LaTeX code with hypertargets of the form "functionname_2093840289fad1337", i.e the name of a function with a hash appended. I would like to refer to those functions from the rest of the document by only referring to the function name which I know is unique. I would like a lookup function something like this:
\hyperdyperlink{functionname}
that emits
\hyperlink{functionname_2093840289fad1337}{functionname}
Note that I can't calculate the hash but I'm prepared to write a table that maps each functionname to functionname+hash. What's the best way to write this kind of function?
Does this work?
\makeatletter
\newcommand\hashlink[2]{%
\@namedef{hashlink-#1}{#2}%
}
\newcommand\hyperdyperlink[1]{%
\hyperlink
{#1_\@nameuse{hashlink-#1}}
{#1}%
}
\hashlink{functionname}{2093840289fad1337}
\hyperdyperlink{functionname}
\makeatother
(Untested.)
Later: To branch the code depending if you've defined the link target, you can write something like
\newcommand\hyperdyperlink[1]{%
\@ifundefined{hashlink-#1}{%
[whatever else you want to do]
}{%
\hyperlink{#1_\@nameuse{hashlink-#1}}{#1}%
}%
}
(Update: oops; that was pretty broken as first posted, sorry. Now fixed, I hope.)