将以某种语法编写的文本转换为另一种指定的语法

Question

我想将用 Markdown 扩展 Fountain 编写的剧本转换为 LaTeX（更具体地说是我自己的剧本 LaTeX 模板）。为此，我需要转换以下格式的文本

Some stage directions.

CHARACTER A:
Text the character is saying.

CHARACTER B:
Text the other character is saying.

Some other stage direction.

CHARACTER B:
Some more text the other character is saying.

到

\textit{Some stage directions.}

\dialog{Character A}{Text the character is saying.}
\dialog{Character B}{Text the other character is saying.}

\textit{Some other stage direction.}

\dialog{Character B}{Some more text the other character is saying.}

我想避免从头开始编写这样的程序。是否有允许执行此相当基本的重新格式化的工具或包（例如 Python）？有问题的可能是舞台方向在文本中分布不均匀，即在一个角色说完之后，可能有也可能没有舞台方向。

Answer 1

假设块由双换行符分隔，这很容易使用正则表达式实现：

输入：

t='''Some stage directions.

CHARACTER A:
Text the character is saying.

CHARACTER B:
Text the other character is saying.

Some other stage direction.

CHARACTER B:
Some more text the other character is saying.'''

代码：

import re
out = '\n\n'.join(fr'\dialog{{{m.group(1)}}}{{{m.group(2)}}}'
                  if (m:=re.match('([^\n]+):\n(.*)', s))
                  else fr'\textit{{{s}}}'
                  for s in re.split('\n\n', t))

print(out)

输出：

\textit{Some stage directions.}

\dialog{CHARACTER A}{Text the character is saying.}

\dialog{CHARACTER B}{Text the other character is saying.}

\textit{Some other stage direction.}

\dialog{CHARACTER B}{Some more text the other character is saying.}