使用 RegEX 从一个文件中读取文本并用另一个 LaTeX 文件替换

Question

使用正则表达式并创建包含计数文本前后的单独文件为此，我从原始文件中导出了 PI 说明LaTeX并将其存储在单独的 LaTeX 文件中Global_PItexts.tex。

现在，我想从Global_PItexts.tex文件中读取 PI 指令并将 PI 指令插入原始 LaTeX 文件中。

我的原始 LaTeX 文件是：

\documentclass{article}
\usepackage{luacode}

\begin{document}

\begin{luacode*}
local domobject = require "luaxml-domobject"
local transform = require "luaxml-transform"
sample = [[
<?xml version="1.0" encoding="utf-8"?>
<art>
<title>Scattering of flexural waves an electric current</title>
<para>Smart testing structures are $a+b$ components Reduce acoustic noise used in engineering applications that are capable of sensing or reacting to their environment \textit{change} xxxxxxxxx Sample XXX1 their mechanical properties. in a predictable and desired manner. In addition to carrying mechanical loads, Abc alleviate vibration, reduce acoustic noise, change their mechanical properties as required or monitor their own condition.</para>
</art>]]

-- open LuaLaTeXpi file
local apifile = io.open("Global_PItexts.tex", "rb")

local dom = domobject.parse(sample)

--Get Before and After Text
local function check_pi(el)
  local before = el:get_sibling_node(-1)
  local after = el:get_sibling_node(1)
  local before_text, after_text = "", ""
  -- get surrounding 50 characters
  if before then 
    before_text = before:get_text()
    before_text = before_text:sub(-50)
  end
  if after then
    after_text = after:get_text()
    after_text = after_text:sub(1,50)
  end
  local text = before_text .. "<!" .. el._attr[ "_text" ] .. "!>" .. after_text .. "\n"
  apifile:read(text)
  --- How to print apifile text here in terminal/command?
  print ("TEXT IS",apifile)
end
\end{luacode*}
\end{document}

我的Global_PItexts.tex是：

or reacting to their environment \textit{change} <!--LuaLaTeX xxxxxxxxx Sample XXX1--> their mechanical properties. in a predictable and

manner. In addition to carrying mechanical loads, <!--LuaLaTeX \hspace*{12pt}Abc--> alleviate vibration, reduce acoustic noise, chang

mechanical properties as required or monitor their <!--\linebreak --> own condition.

预期输出 LaTeX 文件为：

\documentclass{article}
\usepackage{luacode}

\begin{document}

\begin{luacode*}
local domobject = require "luaxml-domobject"
local transform = require "luaxml-transform"
sample = [[
<?xml version="1.0" encoding="utf-8"?>
<art>
<title>Scattering of flexural waves an electric current</title>
<para>Smart testing structures are $a+b$ components Reduce acoustic noise used in engineering applications that are capable of sensing or reacting to their environment \textit{change} <?LuaLaTeX xxxxxxxxx Sample XXX1?> their mechanical properties. in a predictable and desired manner. In addition to carrying mechanical loads, <?LuaLaTeX \hspace*{12pt}Abc?> alleviate vibration, reduce acoustic noise, change their mechanical properties as required or monitor their <?LuaLaTeX \break?> own condition.</para>
</art>]]
\end{luacode*}
\end{document}

读取Global_PItexts.tex文件并将PI指令插入原始LaTeX文件中。如何实现？