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日期格式（在圍兜條目中）/bibelatex biber

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日期格式（在圍兜條目中）/bibelatex biber

我正在使用 biber 和 biblatex，我想列印 2013 年之前的所有論文。

year = {2010}

.bib 檔案中的條目，每個想法都正常運作。但是，如果我使用

date = {2010-11-25}

我的條目被忽略，而不是年份。我尊重日期格式，對嗎？那麼有什麼問題嗎？這是一個 MWE。

\documentclass{article}
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@THESIS{a,
  AUTHOR =  {Myself},
  TITLE = {Me, myself and I},
  Institution = {My University},
  type = {Ph.D. thesis},
  year = {2010} 

} %  date = {2010-11-25}
\end{filecontents*}
\usepackage[backend=biber,defernumbers=true,sorting=ydnt]{biblatex}
\addbibresource{\jobname.bib}
\DeclareSourcemap{
  \maps[datatype=bibtex]{
         \map[overwrite=true]{
            \step[fieldsource=year,  match=\regexp{199([7-9])|200([0-9])|201([0-2])},final]
            \step[fieldset=keywords, fieldvalue={,}, append]
        \step[fieldset=keywords, fieldvalue={before2013}, append]
}}}

\begin{document}
Hello world.
    \nocite{*}
    \printbibliography[type=thesis,keyword=before2013,title=Thesis,resetnumbers=true]
\end{document}

答案1

year您可以將該欄位與biblatex文件中的欄位進行比較，而不是 Biber 的來源對應。 （year無論您是否使用year或 ，我們都可以在此處使用，date因為date欄位在寫入 時總是被分割成其組成部分.bbl。）

我們定義一個 bibcheck

\defbibcheck{before2013}{%
  \iffieldint{year}
    {\ifnumless{\thefield{year}}{2013}
       {}
       {\skipentry}}
    {\skipentry}}

並使用該檢查而不是關鍵字

\printbibliography[type=thesis,check=before2013,title=Thesis,resetnumbers=true]

答案2

您\maps只能設定keyword=before20131997year年至 2012 年，但不能date設定 1997-01-01 至 2012-12-31。僅當 時才列印索引keyword=before2013。因此，如果使用date代替，則不會列印該條目year。

date您可以為以下內容添加類似的地圖year：

\documentclass{article}
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@THESIS{a,
  AUTHOR =  {Myself},
  TITLE = {Me, myself and I},
  Institution = {My University},
  type = {Ph.D. thesis},
  year = {2010} 
}
@THESIS{b,
  AUTHOR =  {Another},
  TITLE = {Another, one and nobody},
  Institution = {My University},
  type = {Ph.D. thesis},
  date = {2010-11-25} 
}
@THESIS{c,
  AUTHOR= {Never},
  TITLE = {I'm to late},
  Institution = {My University},
  type = {Ph.D. thesis},
  date = {2017-01-01}
}
\end{filecontents*}
\usepackage[backend=biber,defernumbers=true,sorting=ydnt]{biblatex}
\addbibresource{\jobname.bib}
\DeclareSourcemap{
  \maps[datatype=bibtex]{
    \map[overwrite=true]{
      \step[fieldsource=year,  match=\regexp{199([7-9])|200([0-9])|201([0-2])},final]
      \step[fieldset=keywords, fieldvalue={,}, append]
      \step[fieldset=keywords, fieldvalue={before2013}, append]
    }
    \map[overwrite=true]{
      \step[fieldsource=date,  match=\regexp{199([7-9])|200([0-9])|201([0-2])},final]
      \step[fieldset=keywords, fieldvalue={,}, append]
      \step[fieldset=keywords, fieldvalue={before2013}, append]
    }
  }
}

\begin{document}
Hello world.
    \nocite{*}
    \printbibliography[type=thesis,keyword=before2013,title=Thesis,resetnumbers=true]
\end{document}

在此輸入影像描述

另一個解決方案是使用檢查，因為檢查是在日期已經分割時完成的：

\documentclass{article}
\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@THESIS{a,
  AUTHOR =  {Myself},
  TITLE = {Me, myself and I},
  Institution = {My University},
  type = {Ph.D. thesis},
  year = {2010} 
}
@THESIS{b,
  AUTHOR =  {Another},
  TITLE = {Another, one and nobody},
  Institution = {My University},
  type = {Ph.D. thesis},
  date = {2010-11-25} 
}
@THESIS{c,
  AUTHOR= {Never},
  TITLE = {I'm to late},
  Institution = {My University},
  type = {Ph.D. thesis},
  date = {2017-01-01}
}
\end{filecontents*}
\usepackage[backend=biber,defernumbers=true,sorting=ydnt]{biblatex}
\addbibresource{\jobname.bib}
\defbibcheck{before2013}{%
  \iffieldint{year}% If an interger field year exists
  {
    \ifnumless{\thefield{year}}{2013}% and the field value is less than 2013
    {}% do nothing
    {\skipentry}% otherwise skip the entry
  }
  {\skipentry}% skip the entrie also if there isn't an integer field year
}

\begin{document}
Hello world.
    \nocite{*}
    \printbibliography[type=thesis,check=before2013,title=Thesis,resetnumbers=true]
\end{document}

結果是一樣的。

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