无需 \input 即可从其他 .tex 文件获取值

Question

我使用 pdflatex 创建 PDF 文档，方法是通过循环将多个.tex文件相互连接\input起来。现在我想在单个.tex文件中引入一个布尔值。根据 true 或 false，应该使用不同的标头。但是，我不知道如何在尚未导入的情况下获取值.tex。

编辑：

这是一个简单的例子：

例子.tex

\documentclass[10pt]{article}
\usepackage[a4paper, left=2cm,top=0.8cm,right=2cm,bottom=3.3cm,headheight=61pt, footskip=61pt, includehead]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\usepackage[ngerman]{babel}
\usepackage{fancyhdr}
\usepackage{tikz}
\usepackage{xifthen}

\definecolor{accentcolor}{HTML}{66cc33}


\fancypagestyle{plain}{%
  \renewcommand{\headrulewidth}{0pt}%
  \fancyhf{}%
  \lhead{\LARGE{{\normalfont\MakeUppercase Details}\\\textcolor{accentcolor}{\Large Test}}}
  \rhead{right side}
}
\pagestyle{plain} % 
 
\newboolean{projectHighlight}
%#####################################################################################################################################################
\begin{document}

\input{details_file}

%all projects from folder desc.:

\let\mylist\empty
\foreach\x in {00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, ...,99} {
  \ifx\mylist\empty
    \xdef\mylist{\x}%
  \else
    \xdef\mylist{\x,\mylist}%
  \fi
}
\foreach\x in \mylist {%    The % here are necessary to eliminate any spurious spaces that may get inserted at these points
    \edef\projectNumber{\x}%
    \edef\FileName{project_\x}%     
    \IfFileExists{\FileName}{%  
       \newpage%
       \input{\FileName}%
       \ifthenelse{\boolean{projectHighlight}}{\lhead{\LARGE{{\normalfont\MakeUppercase Highlited}\\\textcolor{accentcolor}{\Large Test}}}}
       {\lhead{\LARGE{{\normalfont\MakeUppercase Not Highlihhted}\\\textcolor{accentcolor}{\Large Test}}}}       
    }
}
\end{document}

详细信息文件.tex

some details

项目_01.tex

\setboolean{projectHighlight}{true}

Text first project

项目_2.tex

\setboolean{projectHighlight}{true}

Text second project