☰

包裝現有的 bibmacro

tag-icon • tag-icon biblatex
包裝現有的 bibmacro

我正在尋找一種方法，biblatex在沒有指定 DOI 的情況下僅列印 URL（在我的情況下，DOI 無論如何都會導致引用中的鏈接，從而使 URL 變得多餘）。

我想出了這個（但它似乎會導致無限循環，因為編譯未完成...）：

\renewbibmacro*{url+urldate}{%
  \iffieldundef{doi}
    {\usebibmacro{url+urldate}}
    {}%
}

似乎保存巨集\let不起作用，因為+...

知道如何正確執行此操作嗎？

M(N)網頁：

\documentclass{article}
\usepackage[style=authoryear-comp]{biblatex}
\usepackage{hyperref}

%\renewbibmacro*{url+urldate}{%
%  \iffieldundef{doi}
%    {\usebibmacro{url+urldate}}
%    {}%
%

\addbibresource{\jobname.bib}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{key,
  author = {Author, A.},
  year = {2001},
  title = {Title},
  publisher = {Publisher},
  archivePrefix = {arXiv},
  arxivId = {1607.07249},
  doi = {10.1007/978-3-319-49004-5_22},
  eprint = {1607.07249},
  url = {http://link.springer.com/10.1007/978-3-319-49004-5_22},
}
\end{filecontents}

\begin{document}
\nocite{*}
\printbibliography
\end{document}

例子

答案1

沒有\letbibmacro（您可能會提出功能請求），但創建一個並不困難：

\documentclass{article}
\usepackage[style=authoryear-comp]{biblatex}
\usepackage{hyperref}

\newcommand{\letbibmacro}[2]{%
  \csletcs{abx@macro@#1}{abx@macro@#2}%
}

\letbibmacro{orig-url+urldate}{url+urldate}
\renewbibmacro*{url+urldate}{%
  \iffieldundef{doi}
    {\usebibmacro{orig-url+urldate}}
    {}%
}

\addbibresource{\jobname.bib}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{key,
  author = {Author, A.},
  year = {2001},
  title = {Title},
  publisher = {Publisher},
  archivePrefix = {arXiv},
  arxivId = {1607.07249},
  doi = {10.1007/978-3-319-49004-5_22},
  eprint = {1607.07249},
  url = {http://link.springer.com/10.1007/978-3-319-49004-5{\_}22},
}
@book{key2,
  author = {Author, A.},
  year = {2001},
  title = {Title},
  publisher = {Publisher},
  archivePrefix = {arXiv},
  arxivId = {1607.07249},
  eprint = {1607.07249},
  url = {http://link.springer.com/10.1007/978-3-319-49004-5{\_}22},
}
\end{filecontents}

\begin{document}
\nocite{*}
\printbibliography
\end{document}

在此輸入影像描述

答案2

對於您提出的問題，您已經得到了很好的答案，因此我想為您想要解決的問題添加兩個解決方案。

您可以使用

\DeclareSourcemap{
  \maps[datatype=bibtex]{
    \map{
      \step[fieldsource=doi, final]
      \step[fieldset=url, null]
      \step[fieldset=urldate, null]
    }
  }
}

或者

\AtEveryBibitem{%
  \iffieldundef{doi}
    {}
    {\clearfield{url}\clearfield{urlyear}}%
}

如果存在 DOI，則不列印 URL。

答案3

要有條件地列印 url，您可以將其包裝在\iffieldundef{doi}{}{}

\documentclass{article}
\usepackage[style=authoryear-comp]{biblatex}
\usepackage{hyperref}

% print url if no doi
\renewbibmacro*{doi+eprint+url}{%
  \printfield{doi}
  \newunit\newblock
  \iftoggle{bbx:eprint}{
      \usebibmacro{eprint}
  }{}%
  \newunit\newblock
  \iffieldundef{doi}{
      \usebibmacro{url+urldate}}
      {}
}
\addbibresource{\jobname.bib}
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@book{key,
  author = {Author, A.},
  year = {2001},
  title = {Title},
  publisher = {Publisher},
  archivePrefix = {arXiv},
  arxivId = {1607.07249},
  doi = {10.1007/978-3-319-49004-5_22},
  eprint = {1607.07249},
  url = {http://link.springer.com/10.1007/978-3-319-49004-5{\_}22},
}

@book{keyx,
  author = {Author, A.},
  year = {2001},
  title = {Title},
  publisher = {Publisher},
  archivePrefix = {arXiv},
  arxivId = {1607.07249},
  url = {http://link.springer.com/10.1007/978-3-319-49004-5{\_}22},
}
\end{filecontents*}

\begin{document}
\nocite{*}
\printbibliography
\end{document}

相關內容