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回答你上次的请求

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回答你上次的请求

我正在尝试创建一个页面样式，其中 \guideNameA 是必需的，如果使用 \guideNameB，那么我想相应地修改页面样式。此外，我需要通过检查我在序言中是否使用了 \stuNameB 来修改文档内容。以下是页面样式

\ProvidesPackage{Title}[2020/01/11 v.01 an example package]
\RequirePackage{graphicx}
\RequirePackage{tikz}

\newcommand*{\guideNameA}[1]{\gdef\@guideNameA{#1}}
\newcommand*{\@guideNameA}{\texttt{\string\guideNameA} currently not set. Please fix this.}
\newcommand*{\guideNameB}[1]{\gdef\@guideNameA{#1}}
\newcommand*{\@guideNameB}{}

\newcommand*{\stuNameA}[1]{\gdef\@stuNameA{#1}}
\newcommand*{\@stuNameA}{\texttt{\string\stuNameA} currently not set. Please fix this.}
\newcommand*{\stuUSNA}[1]{\gdef\@stuUSNA{#1}}
\newcommand*{\@stuUSNA}{\texttt{\string\stuUSNA} currently not set. Please fix this.}
\newcommand*{\stuNameB}[1]{\gdef\@stuNameB{#1}}
\newcommand*{\@stuNameB}{}
\newcommand*{\stuUSNB}[1]{\gdef\@stuUSNB{#1}}
\newcommand*{\@stuUSNB}{}
\newcommand*{\stuNameC}[1]{\gdef\@stuNameC{#1}}
\newcommand*{\@stuNameC}{}
\newcommand*{\stuUSNC}[1]{\gdef\@stuUSNC{#1}}
\newcommand*{\@stuUSNC}{}

\renewcommand*{\maketitle}{%
\begin{titlepage}
\begin{tikzpicture}[remember picture, overlay]
  \draw[line width = 4pt] ($(current page.north west) + (0.75in,-0.75in)$) rectangle ($(current page.south east) + (-0.75in,0.75in)$);
\end{tikzpicture}
\begin{center}

\vspace{1cm}
{\Large\bfseries\@title\unskip\strut\par}
\vspace{0.25cm}
{\Large\bfseries\ PROJECT REPORT\unskip\strut\par}
\vspace{0.25cm}
{\Large\bfseries Submitted by,\unskip\strut\par}
\end{center}
{\noindent\large\bfseries\@stuNameA\unskip\strut}\hfill{\large\bfseries\@stuUSNA\unskip\strut\par}
\vspace{0.25cm}
{\noindent\large\bfseries\@stuNameB\unskip\strut}\hfill{\large\bfseries\@stuUSNB\unskip\strut\par}
\vspace{0.25cm}
{\noindent\large\bfseries\@stuNameC\unskip\strut}\hfill{\large\bfseries\@stuUSNC\unskip\strut\par}
\begin{center}
{\Large\bfseries Under the guidance of \unskip\strut\par}
\end{center}

%%%%%%Check if \guideNameB is used%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%If true %%%%%%%%%%%%%
{\noindent\large\bfseries\@guideNameA\unskip\strut}\hfill{\large\bfseries\@guideNameB\unskip\strut\par}

%%%%%%%%%%%%%Else %%%%%%%%%%%%%%%%%
\begin{center}
{\large\bfseries\@guideNameA\unskip\strut\par}
\end{center}
\end{titlepage}
}
\endinput

并且该文件是

\documentclass{book}
%Packages
\usepackage{Title}
\usepackage{graphicx}
\usepackage{tikz}
\usetikzlibrary{calc}
\usepackage[a4paper, margin=1in]{geometry}

%%%%%%%%%%%%%%% Commands used from "Title" %%%%%%%%%% 
\stuNameA{P Narashimaraja}
\stuUSNA{1RV07EC007}
\stuNameB{Nithin M}
\stuUSNB{1RV14EC001}

\guideNameA{Narashimaraja}
\guideNameB{Ramavenkateshwaran}

\begin{document}
\maketitle

%%%%%%%%%%%%%%%%%%%If \stuNameB{} command is used, then %%%%%%%%%%%%%%
Certified that the major project work titled \textbf{\textit{TITLE}} is carried out by \textbf{STUDENT NAME A} **and \textbf{STUDENT NAME B}**  who **are** bonafide students of College of Engineering
%%%%%%%%%%%%%%%%%%%%%Else %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Certified that the major project work titled \textbf{\textit{TITLE}} is carried out by \textbf{STUDENT NAME A} who **is** bonafide students of College of Engineering

\end{document}

答案1

您可以使用 TeX 的\newif宏来定义布尔值。在 之后\newif\iffoo，可以使用\footrue或设置布尔值\foofalse，并使用 进行测试\iffoo ... \else ... \fi。请注意，设置布尔值时要遵守 TeX 的分组规则：除非前面有\global，否则这种设置仅限于最内层的组。将其应用到您的代码中，我做了以下操作（这包括您在问题中没有提到但似乎需要的补充，正如我从评论中理解的那样）：

% Title.sty
...
\newif\ifGuideNameBUsed         % initial state: false
\newif\ifStuNameBUsed           % ditto
...
\newcommand*{\guideNameB}[1]{\gdef\@guideNameB{#1}\global\GuideNameBUsedtrue}
...
\newcommand*{\stuNameB}[1]{\gdef\@stuNameB{#1}\global\StuNameBUsedtrue}
...
\renewcommand*{\maketitle}{%
  \begin{titlepage}
    ...
    \ifGuideNameBUsed
      ...
    \else
      ...
    \fi
    \vfill
    \CollegeCertification
  \end{titlepage}%
}

\newcommand*{\CollegeCertification}{%
  ...
  \ifStuNameBUsed
    ...
  \else
    ...
  \fi
}

学生文件：

\documentclass{book}
\usepackage{Title}
...

\title{The Foo Project}

\stuNameA{P.~Duckafoo}
...
\guideNameA{Prof.~Prof.~Canard}
...

\begin{document}
\maketitle

Student text goes here.

\end{document}

我修复了你的这一行Title.sty：

\newcommand*{\guideNameB}[1]{\gdef\@guideNameA{#1}}

它定义或覆盖\@guideNameA而不是。我还修复了示例文档末尾的\@guideNameB“学生”（单个学生情况下的额外内容）。此外，可以从包代码中要求其库和包；没有必要用这个来污染学生文档的序言，因为该行会自动执行所需的操作（在我看来，一个更好的包名称，更具体地说是使用此包的学院结构，将是一个好主意……）。以下是完整的代码：stikzcalcgraphicxTitle\usepackage{Title}

Title.sty：

\ProvidesPackage{Title}[2020/01/24 v0.1 An example package]
\RequirePackage{graphicx}
\RequirePackage{tikz}
\usetikzlibrary{calc}

\newif\ifGuideNameBUsed         % initial state: false
\newif\ifStuNameBUsed           % ditto

\newcommand*{\guideNameA}[1]{\gdef\@guideNameA{#1}}
\newcommand*{\@guideNameA}{\texttt{\string\guideNameA} currently not set. Please fix this.}
\newcommand*{\guideNameB}[1]{\gdef\@guideNameB{#1}\global\GuideNameBUsedtrue}
\newcommand*{\@guideNameB}{}

\newcommand*{\stuNameA}[1]{\gdef\@stuNameA{#1}}
\newcommand*{\@stuNameA}{\texttt{\string\stuNameA} currently not set. Please fix this.}
\newcommand*{\stuUSNA}[1]{\gdef\@stuUSNA{#1}}
\newcommand*{\@stuUSNA}{\texttt{\string\stuUSNA} currently not set. Please fix this.}
\newcommand*{\stuNameB}[1]{\gdef\@stuNameB{#1}\global\StuNameBUsedtrue}
\newcommand*{\@stuNameB}{}
\newcommand*{\stuUSNB}[1]{\gdef\@stuUSNB{#1}}
\newcommand*{\@stuUSNB}{}
\newcommand*{\stuNameC}[1]{\gdef\@stuNameC{#1}}
\newcommand*{\@stuNameC}{}
\newcommand*{\stuUSNC}[1]{\gdef\@stuUSNC{#1}}
\newcommand*{\@stuUSNC}{}

\renewcommand*{\maketitle}{%
  \begin{titlepage}
  \begin{tikzpicture}[remember picture, overlay]
    \draw[line width = 4pt]
      ($(current page.north west) + (0.75in,-0.75in)$) rectangle
      ($(current page.south east) + (-0.75in,0.75in)$);
  \end{tikzpicture}
  \begin{center}

  \vspace{1cm}
  {\Large\bfseries\@title\unskip\strut\par}
  \vspace{0.25cm}
  {\Large\bfseries\ PROJECT REPORT\unskip\strut\par}
  \vspace{0.25cm}
  {\Large\bfseries Submitted by,\unskip\strut\par}
  \end{center}
  {\noindent\large\bfseries\@stuNameA\unskip\strut}\hfill{\large\bfseries\@stuUSNA\unskip\strut\par}
  \vspace{0.25cm}
  {\noindent\large\bfseries\@stuNameB\unskip\strut}\hfill{\large\bfseries\@stuUSNB\unskip\strut\par}
  \vspace{0.25cm}
  {\noindent\large\bfseries\@stuNameC\unskip\strut}\hfill{\large\bfseries\@stuUSNC\unskip\strut\par}
  \begin{center}
  {\Large\bfseries Under the guidance of \unskip\strut\par}
  \end{center}

  \ifGuideNameBUsed
    {\noindent\large\bfseries\@guideNameA\unskip\strut}%
    \hfill
    {\large\bfseries\@guideNameB\unskip\strut\par}%
  \else
    \begin{center}
    {\large\bfseries\@guideNameA\unskip\strut\par}%
    \end{center}%
  \fi
  \vfill
  \CollegeCertification
  \end{titlepage}%
}

\newcommand*{\CollegeCertification}{%
  \noindent
  \ifStuNameBUsed
    Certified that the major project work titled \textbf{\textit{\@title}} is
    carried out by \textbf{\@stuNameA} and \textbf{\@stuNameB} who are
    \emph{bonafide} students of College of Engineering.
  \else
    Certified that the major project work titled \textbf{\textit{\@title}} is
    carried out by \textbf{\@stuNameA} who is a \emph{bonafide} student of
    College of Engineering.
  \fi
}

\endinput

学生文件样本：

\documentclass{book}
\usepackage{Title}
\usepackage[a4paper, margin=1in]{geometry}

\title{The Foo Project}

\stuNameA{P.~Duckafoo}
\stuUSNA{1RV07EC007}
\stuNameB{Q.~Quack}
\stuUSNB{1RV14EC001}

\guideNameA{Prof.~Prof.~Canard}
\guideNameB{Prof.~Dr.~Poulet~Jr.}

\begin{document}
\maketitle
\end{document}

我不得不说，我不太喜欢这种很厚的框架和\large\bfseries标题页上的类型...无论如何，这里有四种可能情况的截图：

  • 一名导师，一名学生：

在此处输入图片描述

  • 一名导师，两名学生：

在此处输入图片描述

  • 两名导师，一名学生：

在此处输入图片描述

  • 两名导师，两名学生：

在此处输入图片描述

回答你上次的请求

回答此评论。在 的末尾Title.sty， 之前\endinput，添加：

\newcommand*{\printStuNameA}{\leavevmode\@stuNameA}
\newcommand*{\printStuNameB}{\leavevmode\@stuNameB}

然后，您可以在学生文档中使用\CollegeCertification宏或类似这样的内容：

\ifStuNameBUsed
  Two students: \printStuNameA\ and \printStuNameB.
\else
  Only one student: \printStuNameA.
\fi

\CollegeCertification如果您不想要我在标题页中包含的最后一项内容，只需删除包含之前的行\end{titlepage}即可Title.sty。

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