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Optional loading of hyperref #5

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Optional loading of hyperref #5

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463ca06
Implement optional loading of hyperref
janniklasrose Aug 12, 2021
b9116b0
Implement runtime check for href
janniklasrose Aug 12, 2021
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15 changes: 13 additions & 2 deletions doi.sty
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Original file line number Diff line number Diff line change
Expand Up @@ -39,10 +39,21 @@
%% https://doi.org/ URL but may be set to old http://dx.doi.org/
%%

%% Declare two complementary boolean options [no]hyperref that determine
%% if hyperref should be loaded in this package.
\newif\if@doihyperref\@doihyperreftrue
\DeclareOption{hyperref}{\@doihyperreftrue}
\DeclareOption{nohyperref}{\@doihyperreffalse}

%% Execute default options and process the options passed to the package.
\ExecuteOptions{hyperref} % default is the old behaviour, to load hyperref
\ProcessOptions\relax

%% We need hyperref, but you probably want to load hyperref
%% beforehand, or set some options later on.
\RequirePackage{hyperref}
\if@doihyperref
\RequirePackage{hyperref}
\fi

%% To change the default prefix, redefine this command within your own code.
%% It takes no argument, which is different from the doipubmed package.
Expand Down Expand Up @@ -88,7 +99,7 @@
\edef\_{_}%
\edef\textless{\@percentchar3C}% instead of {\string<} for Apple
\edef\textgreater{\@percentchar3E}% instead of {\sting>} for Apple
\edef\x{\toks2={\noexpand\href{\doiurl#1}}}%
\edef\x{\toks2={\ifdefined\href\noexpand\href{\doiurl#1}\fi}}%
\x
\edef\x{\endgroup\doitext\the\toks2 \the\toks0}%
\x
Expand Down