bibstyle-patch.sty

\RequirePackage{biblatex}
% Change DOI and eprint handling (adapted from biblatex.def)
\renewbibmacro*{doi+eprint+url}{%
  \iftoggle{bbx:url}
    {\usebibmacro{url+urldate}}
    {}%
  %\newunit
	\newblock
  \iftoggle{bbx:doi}
    {\printfield{doi}}
    {}%
  \newunit
	\newblock
  \iftoggle{bbx:eprint}
    {\usebibmacro{eprint}}
    {}%
	}
\def\bib@urlsize{\small}
% Specify how doi fields are typeset
\DeclareFieldFormat{doi}{%
  \newline%
	{\bib@urlsize
  \ifhyperref
    {\href{https://dx.doi.org/#1}{\nolinkurl{doi:#1}}}
		{\nolinkurl{doi:#1}}}}

% Assume all eprints are arxiv links
\DeclareFieldAlias{eprint}{eprint:arxiv}
% Specify how arxiv fields are typeset
\DeclareFieldFormat{eprint:arxiv}{%
  \newline%
	{\bib@urlsize
  \ifhyperref
    {\href{https://arxiv.org/\abx@arxivpath/#1}{%
       \nolinkurl{arXiv:#1}%
       \iffieldundef{eprintclass}
         {}
         {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}
    {\nolinkurl{arXiv:#1}
     \iffieldundef{eprintclass}
       {}
       {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}}

% Change font size of url field
\ifcsname textls\endcsname%
\appto\bibsetup{%
	% Ever so slightly squish the letters together in urls in the bibliography.
	% This fixes an annoying overfull hbox in the EJC urls.
	% The difference in spacing is given in thousands of em.
	\DeclareFieldFormat{url}{\newline{\small\textls[-7]{\url{#1}}}}
}%
\else%
	\DeclareFieldFormat{url}{\newline{\small\url{#1}}}
\fi

% restyle unpublished bib entries to be more similar to articles
\DeclareBibliographyDriver{unpublished}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author}%
  \setunit{\labelnamepunct}\newblock
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \printfield{howpublished}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{location+date}%
  \newunit\newblock
	\usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \newunit\newblock
  \iftoggle{bbx:related}
    {\usebibmacro{related:init}%
     \usebibmacro{related}}
    {}%
  \usebibmacro{finentry}}