4

我最近正在阅读Laurent Rosenfeld 和 Allen B. Downey 合着的 Think Perl 6, 这是一本非常好的读物。

它的 .tex 文件在 github 中可用

它有这样的代码示例: 在此处输入图像描述

我相信让代码块像这样着色会非常有用: 在此处输入图像描述

为此,我们必须批处理上面存储库中包含的所有 .tex 文件。为此,我们必须转换乳胶代码:

\begin{verbatim}
        say 42 ==  42;           # True
        say 42 ==  42.0;         # True
        say 42 ===  42;          # True
        say 42 === 42.0;         # False
\end{verbatim}


\begin{verbatim}
$x eq $y            # $x is string-wise equal to $y
$x ne $y            # $x is string-wise not equal to $y
$x gt $y            # $x is greater than $y (alphabetically after)
$x lt $y            # $x is less than $y (alphabetically before)
$x ge $y            # $x is greater than or equal to $y
$x le $y            # $x is less than or equal to $y
$x eqv $y           # $x is truly equivalent to $y
\end{verbatim}

\begin{minted}{perl6}
        say 42 ==  42;           # True
        say 42 ==  42.0;         # True
        say 42 ===  42;          # True
        say 42 === 42.0;         # False
\end{minted}


\begin{minted}{perl6}
$x eq $y            # $x is string-wise equal to $y
$x ne $y            # $x is string-wise not equal to $y
$x gt $y            # $x is greater than $y (alphabetically after)
$x lt $y            # $x is less than $y (alphabetically before)
$x ge $y            # $x is greater than or equal to $y
$x le $y            # $x is less than or equal to $y
$x eqv $y           # $x is truly equivalent to $y
\end{minted}

我想用 Perl 6 来完成这个。这是我计划做的。

THIS IS DUMMY CODE

# First I want to skim all the .tex files in the cloned repo (with git) 

for dir("ThinkPerl6/book") ->$file {
  say $file if $file~~/\.tex/;
}

# Read each .tex file and modify, replace `\begin{verbatim}` with `\begin{minted}{perl6}`

for "$file.tex".IO.lines -> $line {
  substitute with "\begin{minted}{perl6}" if $line ~~/\\begin\{verbatim\}/;
}

# Read each .tex file and modify, replace `\end{verbatim}` with `\end{minted}`

for "$file.tex".IO.lines -> $line {
  substitute with "\end{minted}" if $line ~~/\\end\{verbatim\}/;
}

我无法超越。有什么帮助吗?使用正则表达式会很有帮助。

最好的祝福,

苏曼

4

2 回答 2

6

您需要执行以下步骤:

  • 创建应用了替换的每一行的副本。您可以为此使用subst方法
  • 将修改后的副本写入新文件(可能.new添加了扩展名)
  • (可选)移动.new以覆盖原始文件。请参阅此示例以获取灵感。

我希望这有帮助。

于 2017-08-10T09:38:08.427 回答
4

这是 moritz 前两个要点的一个实现。

my $fh-out = open "$file.new.tex", :w; # Create a new file

# Read in old file, line by line
for "$file.tex".IO.lines -> $line is copy {

    # Make changes, if needed
    $line.=subst('\begin\{verbatim\}','\begin{minted}{perl6}');
    $line.=subst('\end\{verbatim\}','\end{minted}');

    # Print line to new file
    $fh-out.put: $line;
}
于 2017-08-16T12:12:01.743 回答