避免使用 \includexmp{pdfa-1b} 出現錯誤。是否有包含完整 .XMP 檔案的最佳實務和工作範例清單？

Question

嘗試使用某些時出現以下錯誤pdfa-1b東西:

(/usr/local/texlive/2015basic/texmf-dist/tex/generic/pgf/frontendlayer/tikz/lib
raries/tikzlibrarytopaths.code.tex))) (./chronosyschr.tex)) (./longtable.sty) (./arydshln.sty) (./xmpincl.sty
(/usr/local/texlive/2015basic/texmf-dist/tex/latex/base/ifthen.sty))
! Missing $ inserted.
<inserted text> 
                $
l.274 \includexmp{pdfa-1b}

? 

我的 .tex 檔案中的程式碼如下：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% XMP data
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{xmpincl}

\providecommand{\xmpProducer}{LaTeX2e}
\providecommand{\xmpOrg}{MyOrg}
\providecommand{\xmpTitle}{\ttitle}
\providecommand{\xmpAuthor}{\tauthor, [email protected]}
\providecommand{\xmpKeywords}{\tkeywordsEn}

\includexmp{pdfa-1b}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% pdfInfo
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\pdfinfo{%
/Title    (\ttitle)
/Author   (\tauthor, [email protected])
/Subject  (\ttitleEn)
/Keywords (\tkeywordsEn)
/ModDate  (\pdfcreationdate)
/Trapped  /False
}

XMP 元資料範例（或XMP 預定義架構）除了有效的license.XMP之外，在文件中不容易找到。但實際使用的例子和最佳實踐缺少更完整的元資料。

我正在嘗試使用 GitHub 儲存庫中的 pdfa-1b.xmp 檔案： https://github.com/bencomp/pdfx-ext/blob/master/pdfa-1b.xmp （因為我們的教師提供的任何內容都無法編譯；並將其內容放入https://www.pdflib.com/knowledge-base/xmp-metadata/free-xmp-validator/轉身無效）。

所有廣泛的文檔都缺乏基本的工作範例...或者可能只是查看錯誤的 pdfa-1b 文件/套件...

預先感謝您提供任何有用的答案。

Answer 1

該xmpincl軟體包可與手冊中提供的 xmp 檔案配合使用（請參閱https://www.ctan.org/tex-archive/macros/latex/contrib/xmpincl?lang=en，從 .dtx 檔案末尾複製 xmp 是最簡單的）。

但是，該pdfa-1b.xmp文件包含一些帶有 的條件@，因此您需要將\includexmp和括\makeatletter起來\makeatother。在我的系統上，由於某種原因，該\ifx \@empty構造不起作用（執行了 else 子句），我在 xmp 檔案中替換了它，\ifx \undefined該檔案確實起作用。

微量元素：

\documentclass{article}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% XMP data
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{xmpincl}

\providecommand{\xmpProducer}{LaTeX2e}
\providecommand{\xmpOrg}{MyOrg}
\providecommand{\xmpTitle}{MyTitle}
\providecommand{\xmpAuthor}{MyAuthor, [email protected]}
\providecommand{\xmpKeywords}{MyKeywords}
\providecommand{\xmpSubject}{MySubject}
\providecommand{\xmpCreatorTool}{\pdftexbanner}
\providecommand{\convDate}{\pdfcreationdate}
\makeatletter
\includexmp{pdfa-1b}
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% pdfInfo
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\pdfinfo{%
/Title    (MyTitle)
/Author   (MyAuthor, [email protected])
/Subject  (MySubject)
/Keywords (MyKeywords)
/ModDate  (\pdfcreationdate)
/Trapped  /False
}
\begin{document}
Hello, world!
\end{document}

修改後的片段pdfa-1b.xmp：

\ifx\xmpJournalnumber\undefined\relax\else<prism:issn>\xmpJournalnumber</prism:issn>\fi
\ifx\xmpVolume\undefined\relax\else<prism:volume>\xmpVolume</prism:volume>\fi
\ifx\xmpIssue\undefined\relax\else<prism:number>\xmpIssue</prism:number>\fi

結果：