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lstlinputlisting 或 lstlisting 后自动重置计数器

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lstlinputlisting 或 lstlisting 后自动重置计数器

我有许多用计数器设置的数字注释的代码示例，lstNoteCounter并在代码下方的文本中引用：我的标记有效，但对于大型文档来说并不方便：

\documentclass{article}
\usepackage{listings}
\lstset{
   basicstyle=\footnotesize\ttfamily, % Standardschrift
   escapechar=¢,
   language=python,
 }
\usepackage{pifont}     % dings for margin numbers
\usepackage{ifthen}
\newcounter{lstNoteCounter}
\newcommand{\lnnum}[1]{% Print pifont circled number for line label
\noindent
\ifcase#1%
% nothing for 0
\or\normalsize\ding{202}%
\or\normalsize\ding{203}%
\or\normalsize\ding{204}%
\or\normalsize\ding{205}%       % in practice, we continue to 9
\else{NUM TOO HIGH}%
\fi%
}

\newcommand*{\lnote}{%
\stepcounter{lstNoteCounter}\vbox{\llap{{\lnnum{\thelstNoteCounter}}\hskip 1em}}%
}

\newcommand*{\lnoteref} {%
\stepcounter{lstNoteCounter}{\lnnum{\thelstNoteCounter}\hskip 0.5em}%
}


\begin{document}

\begin{lstlisting}[frame=lines]
¢\lnote¢def cosec(x):
    return 1/math.sin(x)

¢\lnote¢csc = cosec
print(csc(math.pi/3))
\end{lstlisting}
% I have to reset manually HERE:
\setcounter{lstNoteCounter}{0}

\lnoteref There is no \texttt{cosec} function in Python's \texttt{math} module, so we define one.

\lnoteref Python functions are objects so we can assign them to identifiers.

% I have to reset manually HERE:
\setcounter{lstNoteCounter}{0}

\begin{lstlisting}[frame=lines]
¢\lnote¢def sec(x):
    return 1/math.cos(x)

¢\lnote¢print(sec(math.pi/3))
\end{lstlisting}

% I have to reset manually HERE:
\setcounter{lstNoteCounter}{0}

\lnoteref There is no \texttt{sec} function either, so define one.

\lnoteref Will print \texttt{2}.

\end{document}

我怎样才能在或环境lstNoteCounter之前和之后自动重置，这样我就不必每次都手动发出命令？lstlistinglstinputlisting\setcounter{lstNoteCounter}{0}

答案1

我认为最好使用\label-\ref机制。如果您改变了对编号的想法，只需更改 的定义\lnnumding。将计数器链接到 ，mocklisting每次调用 时python都会将其重置为零。

通过设置标签，您可以获得更大的灵活性（但必须提供标签）。

\documentclass{article}
\usepackage{listings}
\usepackage{pifont}     % dings for margin numbers

\lstset{
   basicstyle=\footnotesize\ttfamily, % Standardschrift
   escapechar=¢,
   language=python,
 }

\lstnewenvironment{python}[1][]
 {\stepcounter{mocklisting}\lstset{#1}}
 {}

\newcounter{mocklisting}
\newcounter{lstNoteCounter}[mocklisting]
\renewcommand{\thelstNoteCounter}{\lnnumding{\arabic{lstNoteCounter}}}

\DeclareRobustCommand{\lnnumding}[1]{\mbox{\normalsize\ding{\number\numexpr201+#1}}}

\newcommand*{\lnote}[1]{%
  \refstepcounter{lstNoteCounter}\label{#1}%
  \makebox[0pt][r]{\thelstNoteCounter\hspace{1em}}%
}

\newcommand*{\lnoteref}[1]{\ref{#1}\hspace{.5em}\ignorespaces}


\begin{document}

\begin{python}[frame=lines]
¢\lnote{A}¢def cosec(x):
    return 1/math.sin(x)

¢\lnote{B}¢csc = cosec
print(csc(math.pi/3))
\end{python}

\lnoteref{A} There is no \texttt{cosec} function in Python's \texttt{math} module,
so we define one.

\lnoteref{B} Python functions are objects so we can assign them to identifiers.

\begin{python}[frame=lines]
¢\lnote{C}¢def sec(x):
    return 1/math.cos(x)

¢\lnote{D}¢print(sec(math.pi/3))
\end{python}

\lnoteref{C} There is no \texttt{sec} function either, so define one.

\lnoteref{D} Will print \texttt{2}.

\end{document}

在此处输入图片描述

答案2

我认为最好的方法是定义一个新的列表环境，在其开始和结束时执行此操作。

例如，我们称之为mylisting：

\lstnewenvironment{mylisting}[1][]
{\lstset{%
   basicstyle=\footnotesize\ttfamily, % Standardschrift
   escapechar=¢,
   language=python,
   #1
 }%
\setcounter{lstNoteCounter}{0}}
{\setcounter{lstNoteCounter}{0}}

并在您的文档中使用mylisting而不是lstlisting。

梅威瑟：

\documentclass{article}
\usepackage{listings}

\lstnewenvironment{mylisting}[1][]
{\lstset{%
   basicstyle=\footnotesize\ttfamily, % Standardschrift
   escapechar=¢,
   language=python,
   #1
 }%
\setcounter{lstNoteCounter}{0}}
{\setcounter{lstNoteCounter}{0}}

\usepackage{pifont}     % dings for margin numbers
\usepackage{ifthen}
\newcounter{lstNoteCounter}
\newcommand{\lnnum}[1]{% Print pifont circled number for line label
\noindent
\ifcase#1%
% nothing for 0
\or\normalsize\ding{202}%
\or\normalsize\ding{203}%
\or\normalsize\ding{204}%
\or\normalsize\ding{205}%       % in practice, we continue to 9
\else{NUM TOO HIGH}%
\fi%
}

\newcommand*{\lnote}{%
\stepcounter{lstNoteCounter}\vbox{\llap{{\lnnum{\thelstNoteCounter}}\hskip 1em}}%
}

\newcommand*{\lnoteref} {%
\stepcounter{lstNoteCounter}{\lnnum{\thelstNoteCounter}\hskip 0.5em}%
}

\begin{document}

\begin{mylisting}[frame=lines]
¢\lnote¢def cosec(x):
    return 1/math.sin(x)

¢\lnote¢csc = cosec
print(csc(math.pi/3))
\end{mylisting}

\lnoteref There is no \texttt{cosec} function in Python's \texttt{math} module, so we define one.

\lnoteref Python functions are objects so we can assign them to identifiers.

\begin{mylisting}[frame=lines]
¢\lnote¢def sec(x):
    return 1/math.cos(x)

¢\lnote¢print(sec(math.pi/3))
\end{mylisting}

\lnoteref There is no \texttt{sec} function either, so define one.

\lnoteref Will print \texttt{2}.

\end{document}

输出：

在此处输入图片描述

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