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是否有经典 LaTeX/ConTeXt 语法的解析器？

tag-icon • tag-icon context parsing
是否有经典 LaTeX/ConTeXt 语法的解析器？

每次出现有关解析 tex 语法的问题时，第一个答案都是：这是不可能的，这里有一个（复杂的）例子来解释原因。

因此，我试图将问题的范围缩小到所谓的经典语法：

\command[optional]{mandatory}{mandatory}

或者就 ConTeXt 的情况来说：

\command[non-print][key=value]{arguemnt}...

答案1

如果目标是生成 HTML 文件，那么 ConTeXt 导出机制是最佳选择。这是一个测试文件：

\setupbackend[export=yes]

\starttext
\startsection[title={Test of export}]
  This is to test how \CONTEXT\ export works. First, we input a test file
  below.

  \startnarrower
    \input ward
  \stopnarrower

 Let's see some other environments, such as\footnote{Note that we define a
 float in \in{Figure}[fig:mill].}

  \startitemize[n]
    \item A table:

      \startTABLE
        \NC 1 \NC 2 \NC 3 \NC \NR
        \NC 1 \NC 2 \NC 3 \NC \NR
        \NC 1 \NC 2 \NC 3 \NC \NR
      \stopTABLE

    \item A formula

      \startformula
        α^2 + β^2 = 2
      \stopformula

    \item A figure

      \externalfigure[mill.png][width=5cm]

  \stopitemize

  \startplacefigure
      [title={This is a Mill}, reference={fig:mill}]
    \externalfigure[mill.png][width=5cm]
  \stopplacefigure

\stopsection
\stoptext

当您使用 编译它时，您将获得一个包含以下内容的context filename目录：filename-export

  • images目录
  • styles目录（包含与不同环境设置相对应的 css 文件）
  • filename-div.xhtml（每个环境都导出为<div class=...>）
  • filename-tag.xhtml（每个环境都导出为<environment>）
  • filename-raw.xml（一个xml文档，类似于tag-test.xhtml）
  • filename-pub.lua（帮助生成 ePub 文件的辅助程序）。

例如对于上述文件，该filename-div.xhtml文件为：

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>

<!--

    input filename   : test
    processing date  : Wed Sep 16 12:28:10 2015
    context version  : 2015.09.13 13:31
    exporter version : 0.34

-->



<html xmlns="http://www.w3.org/1999/xhtml" xmlns:math="http://www.w3.org/1998/Math/MathML">

    <head>

        <meta charset="utf-8"/>

        <title>no title</title>

<link type="text/css" rel="stylesheet" href="styles/test-defaults.css" />
<link type="text/css" rel="stylesheet" href="styles/test-images.css" />
<link type="text/css" rel="stylesheet" href="styles/test-styles.css" />


    </head>
    <body>
        <div xmlns="http://www.pragma-ade.com/context/export">

<div class="warning">Rendering can be suboptimal because there is no default/fallback css loaded.</div>

<div>
 <div class="metadata">
 </div>
 <div id="aut-1" class="section level-3">
  <div class="sectionnumber">1</div>
   <div class="sectiontitle">Test of export</div>
  <div class="sectioncontent">
This is to test how ConTEXt export works. First, we input a test file below.
   <div class="break"><!--empty--></div>
The Earth, as a habitat for animal life, is in old age and has a fatal illness. Several, in fact. It would be happening whether humans had ever evolved or not. But our presence is like the effect of an old-age patient who smokes many packs of cigarettes per day <div class="subsentencesymbol symbol-middle">—</div> and we humans are the cigarettes.
   <div class="break"><!--empty--></div>
Let’s see some other environments, such as<div class="descriptionsymbol footnote insert-1"><div class="sup">1</div></div> 
   <div class="itemgroup itemize level-1 symbol-n">
    <div class="item">
     <div class="itemtag">1.</div>
     <div class="itemcontent">A table:<div class="table"><div class="tablerow"><div class="tablecell align-flushleft"> 1 </div><div class="tablecell align-flushleft"> 2 </div><div class="tablecell align-flushleft"> 3 </div></div><div class="tablerow"><div class="tablecell align-flushleft"> 1 </div><div class="tablecell align-flushleft"> 2 </div><div class="tablecell align-flushleft"> 3 </div></div><div class="tablerow"><div class="tablecell align-flushleft"> 1 </div><div class="tablecell align-flushleft"> 2 </div><div class="tablecell align-flushleft"> 3 </div></div></div></div>
    </div>
    <div class="item">
     <div class="itemtag">2.</div>
     <div class="itemcontent">A formula<div class="formula"> <div class="formulacontent"><m:math display="block" xmlns:m="http://www.w3.org/1998/Math/MathML"><m:mrow><m:msup><m:mi>

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