如何使用 splitbib 创建全面的参考书目？

Question

我需要将我的参考书目分成几个部分。biblatex软件包完全符合我的需求，但不幸的是，不支持我的定制磷灰石风格。因此，我不得不求助于splitbib包。然而，真正令人恼火的是，它splitbib要求定义要包含在参考书目中的每个来源。由于我正在写一本有数百个参考文献的书，因此手动定义命令\SBentries{}对我来说不是一个选择。biblatex有一个非常酷的功能，可以通过引用.bib文件中的关键字来分离 bib 条目。是否有类似的选项可以用关键字定义的复合条目splitbib替换单个条目？\SBentries{}

mwe（无解）如下所示：

\documentclass{book}
\usepackage{apacite}
\usepackage{splitbib}
\begin{category}[A]{First Category}
\SBentries{B1,B2}
\end{category}
\begin{category}[B]{Second Category}
\SBentries{A1}
\end{category}
\usepackage{filecontents}
\begin{filecontents}{\bibname.bib}
 @BOOK{B1,
  author =       {Name1, Surname1},
  title =        {Title of the first book in the First category},
  publisher =    {Name of the Publisher},
  year =         {2017},
  keywords =     {firstcategory}
}
@BOOK{B2,
  author =       {Name2, Surname2},
  title =        {Title of the second book in the First category},
  publisher =    {Name of the Publisher},
  year =         {2016},
  keywords =     {firstcategory}
}
@ARTICLE{A1,
  author =       {Name3, Surname3},
  title =        {This is the title of first article in the Second category},
  journal =      {Name of the Journal},
  year =         {2017},
  volume =       {01},
  number =       {12},
  pages =        {1-20},
  keywords =     {secondcategory}
}
\end{filecontents}
\begin{document}
I split my bibliography in two section by using the splitbib package. Authors \cite{B1,B2} with the keyword "firstcategory" in the bib. file should appear in the First Category and authors \cite{A1} with the keyword "secondcategory" should appear in the Second Category.
\bibliography{\bibname}
\bibliographystyle{apacite}
\end{document}