如何在Django模板中转义LaTeX特殊字符？ [英] How can I escape LaTeX special characters inside django templates?

问题描述

我有这个django模板，可用来生成LaTeX文件

I have this django template which I use to generate LaTeX files

\documentclass[11pt]{report}

\begin{document}
\begin{table}
    \centering
    \begin{tabular}{lcr}
    \hline
    {% for col in head %}
        \textbf{ {{col}} }
        {% if not forloop.last %}
           &
        {% endif %}
    {% endfor %} 
    \\
    \hline
    {% for row in table %}
        {% for cell in row %}

            {% if not forloop.last %} 
               &
            {% endif %}
        {% endfor %}
        \\
    {% endfor %}
    \hline
    \end{tabular}
    \caption{Simple Phonebook}
    \label{tab:phonebook}
\end{table}

\end{document}

但是我的列数非常大，因此它们可以包含任何特殊字符。

But my no of columns are very large so they can contain any special characters in them. I am getting error while generating pdf file.

如何转义所有列中的所有文本？

How can I escape all the text in all columns?

推荐答案

如果要复制粘贴，Alex的答案包括代码建议：

Alex's answer including suggestions in code, if you want to copy-paste:

import re

def tex_escape(text):
    """
        :param text: a plain text message
        :return: the message escaped to appear correctly in LaTeX
    """
    conv = {
        '&': r'\&',
        '%': r'\%',
        '$': r'\$',
        '#': r'\#',
        '_': r'\_',
        '{': r'\{',
        '}': r'\}',
        '~': r'\textasciitilde{}',
        '^': r'\^{}',
        '\\': r'\textbackslash{}',
        '<': r'\textless{}',
        '>': r'\textgreater{}',
    }
    regex = re.compile('|'.join(re.escape(str(key)) for key in sorted(conv.keys(), key = lambda item: - len(item))))
    return regex.sub(lambda match: conv[match.group()], text)

请参见使用替换字典替换字符串的最简单方法？替换方法。

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