From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/113966
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Thangalin via ntg-context <ntg-context@ntg.nl>
Newsgroups: gmane.comp.tex.context
Subject: Dynamic document variables from metadata
Date: Sat, 1 Jan 2022 17:54:19 -0800
Message-ID: <CAANrE7rWY5SCSazHYPxOX6+KOJfgHag4ZFUHvoeMTAkmZW416A@mail.gmail.com>
Reply-To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="===============5290307857576075449=="
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="24147"; mail-complaints-to="usenet@ciao.gmane.io"
Cc: Thangalin <thangalin@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Original-X-From: ntg-context-bounces@ntg.nl Sun Jan 02 02:54:56 2022
Return-path: <ntg-context-bounces@ntg.nl>
Envelope-to: gctc-ntg-context-518@m.gmane-mx.org
Original-Received: from zapf.boekplan.nl ([5.39.185.232] helo=zapf.ntg.nl)
	by ciao.gmane.io with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <ntg-context-bounces@ntg.nl>)
	id 1n3q5H-00063B-OZ
	for gctc-ntg-context-518@m.gmane-mx.org; Sun, 02 Jan 2022 02:54:55 +0100
Original-Received: from localhost (localhost [127.0.0.1])
	by zapf.ntg.nl (Postfix) with ESMTP id F316D289097;
	Sun,  2 Jan 2022 02:54:36 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at zapf.boekplan.nl
Original-Received: from zapf.ntg.nl ([127.0.0.1])
	by localhost (zapf.ntg.nl [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id OenRu0BVOntH; Sun,  2 Jan 2022 02:54:35 +0100 (CET)
Original-Received: from zapf.ntg.nl (localhost [127.0.0.1])
	by zapf.ntg.nl (Postfix) with ESMTP id 923B4286D12;
	Sun,  2 Jan 2022 02:54:35 +0100 (CET)
Original-Received: from localhost (localhost [127.0.0.1])
 by zapf.ntg.nl (Postfix) with ESMTP id 8D19F286D12
 for <ntg-context@ntg.nl>; Sun,  2 Jan 2022 02:54:33 +0100 (CET)
X-Virus-Scanned: Debian amavisd-new at zapf.boekplan.nl
Original-Received: from zapf.ntg.nl ([127.0.0.1])
 by localhost (zapf.ntg.nl [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id BSc1zQXYRKHd for <ntg-context@ntg.nl>;
 Sun,  2 Jan 2022 02:54:32 +0100 (CET)
Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=209.85.167.47;
 helo=mail-lf1-f47.google.com; envelope-from=thangalin@gmail.com;
 receiver=<UNKNOWN> 
Original-Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com
 [209.85.167.47])
 (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits))
 (No client certificate requested)
 by zapf.ntg.nl (Postfix) with ESMTPS id B593E2810F4
 for <ntg-context@ntg.nl>; Sun,  2 Jan 2022 02:54:31 +0100 (CET)
Original-Received: by mail-lf1-f47.google.com with SMTP id i31so67598966lfv.10
 for <ntg-context@ntg.nl>; Sat, 01 Jan 2022 17:54:31 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112;
 h=mime-version:from:date:message-id:subject:to;
 bh=MluqNqWiO++6meR+HqWT/0Zc0kOyM/aNjQdLEMEixjQ=;
 b=IM16x1hujD9HhukYmMny3+bVkvNkbc0SseRWw3n/jEqXsG50rcgpqaryj+GpzhHDS8
 e7gUOo90P4nLeQHVikQn7JazMN8Fjrw/DQj/lUALTPXR0bgTKVBL85Iok91vOo6rJ5zL
 fBfa9eSEC0gVjl/cw5O5v+Js4fjfOpr+Q3tsyz20OjbB2CK1qJkSYw3bYwxpM7nwY4ju
 DU/R3XoWvmT9VB5yW6PiPdOaWVems67yclap3exm+fkcmn2abepZeN+t3CGZoDSYPZoN
 9anTuZTN9EBVtTNvgApG66vUiGwLt6EntB/ldiKkS5MhmxRafvgbQpe3mDNJM4C9dDMV
 TV8A==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20210112;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
 bh=MluqNqWiO++6meR+HqWT/0Zc0kOyM/aNjQdLEMEixjQ=;
 b=M/PNqeT99XNUtMdQEFjSEIN53wlY2pwxpBBvCDIvTUD4JRYxJsao+OoAWweiD+dQTW
 YBfeCQARfrfDZD7mA8XepZerBm8v/1ttlYVBpc+4OIKiNoN+tk1kgpO+IoQ9oL/75wfu
 OMQslIPgcsiAVaEp9gHHPhvzWgIqGdzVnPsxThtbSEkNynOd3A5+VrDYxedWV0/e0lfN
 GpRtQCogccbg4dj0jNwDQYcZcpEKsmNRdmjr3OVvlZVhHNSYKKU4QSoc6Alfu5BsVkPZ
 E9EF3RFbDgN6lxSh3GEJmCdkRbNrX4qNQRJPOYsbOrG3F1XbGl3bCdaavH6txjLtfTKr
 93Hg==
X-Gm-Message-State: AOAM530AXrJ/UVpaHpqdmqyvc1cVzUXMUMconkr8X4rBXrJt5lNhYr4b
 b6k4rZICCzbL3wI+MRvfDHDE9Or2UegjpCBjQ6/sDuXm
X-Google-Smtp-Source: ABdhPJyPe1Se77XemStr3mtbtGz5BfzSeFUYeBAKTyfYmMx9PdleUUF0uRJKUs03DJwGnxUw7PGibxntsTo2YShjgBo=
X-Received: by 2002:ac2:4350:: with SMTP id o16mr35660793lfl.52.1641088470739; 
 Sat, 01 Jan 2022 17:54:30 -0800 (PST)
X-BeenThere: ntg-context@ntg.nl
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: mailing list for ConTeXt users <ntg-context.ntg.nl>
List-Unsubscribe: <https://mailman.ntg.nl/mailman/options/ntg-context>,
 <mailto:ntg-context-request@ntg.nl?subject=unsubscribe>
List-Archive: <http://mailman.ntg.nl/pipermail/ntg-context/>
List-Post: <mailto:ntg-context@ntg.nl>
List-Help: <mailto:ntg-context-request@ntg.nl?subject=help>
List-Subscribe: <https://mailman.ntg.nl/mailman/listinfo/ntg-context>,
 <mailto:ntg-context-request@ntg.nl?subject=subscribe>
Errors-To: ntg-context-bounces@ntg.nl
Original-Sender: "ntg-context" <ntg-context-bounces@ntg.nl>
Xref: news.gmane.io gmane.comp.tex.context:113966
Archived-At: <http://permalink.gmane.org/gmane.comp.tex.context/113966>

--===============5290307857576075449==
Content-Type: multipart/alternative; boundary="00000000000057f20d05d48faf1f"

--00000000000057f20d05d48faf1f
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Happy New Year!

How would you implement a mechanism that takes arbitrary XHTML <meta> tags
and produces document variables? Consider:

    <meta name=3D"journal" content=3D"Nature" />

After running XML setups, the following would write "Nature":

    \documentvariable{journal}

The tricky part is doing this without pre-defining them. Here's a short,
self-contained example to help demonstrate:

\startbuffer[xdoc]
<html>
<head>
  <meta content=3D"Milena Mari=C4=87 Einstein" name=3D"author"/>
  <meta content=3D"Annalen der Physik" name=3D"journal"/>
</head>
<body>
</body>
</html>\stopbuffer
\startxmlsetups xml:xhtml
  \xmlsetsetup{\xmldocument}{*}{-}
  \xmlsetsetup{\xmldocument}{html|body}{xml:*}
  \xmlsetsetup{\xmldocument}{head}{xml:meta}\stopxmlsetups
\xmlregistersetup{xml:xhtml}
\startxmlsetups xml:html
  % "author" is a special setup, not generalized
  \xmlfilter{#1}{/head/meta[@name=3D'author']/command(xml:author)}

  % What goes here to make this dynamic?
  %\xmlfilter{#1}{/head/meta[@name=3D'journal']/command(xml:journal)}

  \xmlflush{#1}\stopxmlsetups
\startxmlsetups xml:author
  \setupdocument[author=3D{\xmlatt{#1}{content}}]
  \setupdocument[metadata:author=3D{\xmlatt{#1}{content}}]
  \setupinteraction[author=3D{\documentvariable{author}}]\stopxmlsetups
% How can this be generalized?%\startxmlsetups xml:journal
  %\setupdocument[journal=3D{\xmlatt{#1}{content}}]%\stopxmlsetups
\startxmlsetups xml:body
  \startdocument
    Author: \documentvariable{author}

    \par

    Journal: \documentvariable{journal}
  \stopdocument\stopxmlsetups
\xmlprocessbuffer{main}{xdoc}{}


Thank you!

--00000000000057f20d05d48faf1f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Happy New Year!</div><div><br></div><div>How would yo=
u implement a mechanism that takes arbitrary XHTML &lt;meta&gt; tags and pr=
oduces document variables? Consider:</div><div><br></div><div>=C2=A0=C2=A0=
=C2=A0 &lt;meta name=3D&quot;journal&quot; content=3D&quot;Nature&quot; /&g=
t;</div><div><br></div><div>After running XML setups, the following would w=
rite &quot;Nature&quot;:<br></div><div><br></div><div>=C2=A0=C2=A0=C2=A0 \d=
ocumentvariable{journal}</div><div><br></div><div>The tricky part is doing =
this without pre-defining them. Here&#39;s a short, self-contained example =
to help demonstrate:</div><div><br></div><div><pre class=3D"lang-tex s-code=
-block"><code class=3D"hljs language-latex"><span class=3D"hljs-keyword">\s=
tartbuffer</span>[xdoc]
&lt;html&gt;
&lt;head&gt;
  &lt;meta content=3D&quot;Milena Mari=C4=87 Einstein&quot; name=3D&quot;au=
thor&quot;/&gt;
  &lt;meta content=3D&quot;Annalen der Physik&quot; name=3D&quot;journal&qu=
ot;/&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;/body&gt;
&lt;/html&gt;
<span class=3D"hljs-keyword">\stopbuffer</span>

<span class=3D"hljs-keyword">\startxmlsetups</span> xml:xhtml
  <span class=3D"hljs-keyword">\xmlsetsetup</span>{<span class=3D"hljs-keyw=
ord">\xmldocument</span>}{*}{-}
  <span class=3D"hljs-keyword">\xmlsetsetup</span>{<span class=3D"hljs-keyw=
ord">\xmldocument</span>}{html|body}{xml:*}
  <span class=3D"hljs-keyword">\xmlsetsetup</span>{<span class=3D"hljs-keyw=
ord">\xmldocument</span>}{head}{xml:meta}
<span class=3D"hljs-keyword">\stopxmlsetups</span>

<span class=3D"hljs-keyword">\xmlregistersetup</span>{xml:xhtml}

<span class=3D"hljs-keyword">\startxmlsetups</span> xml:html<br>  % &quot;a=
uthor&quot; is a special setup, not generalized
  <span class=3D"hljs-keyword">\xmlfilter</span>{<span class=3D"hljs-params=
">#1</span>}{/head/meta[@name=3D&#39;author&#39;]/command(xml:author)}

  <span class=3D"hljs-comment">% What goes here to make this dynamic?</span=
>
  <span class=3D"hljs-comment">%\xmlfilter{#1}{/head/meta[@name=3D&#39;jour=
nal&#39;]/command(xml:journal)}</span>

  <span class=3D"hljs-keyword">\xmlflush</span>{<span class=3D"hljs-params"=
>#1</span>}
<span class=3D"hljs-keyword">\stopxmlsetups</span>

<span class=3D"hljs-keyword">\startxmlsetups</span> xml:author
  <span class=3D"hljs-keyword">\setupdocument</span>[author=3D{<span class=
=3D"hljs-keyword">\xmlatt</span>{<span class=3D"hljs-params">#1</span>}{con=
tent}}]
  <span class=3D"hljs-keyword">\setupdocument</span>[metadata:author=3D{<sp=
an class=3D"hljs-keyword">\xmlatt</span>{<span class=3D"hljs-params">#1</sp=
an>}{content}}]
  <span class=3D"hljs-keyword">\setupinteraction</span>[author=3D{<span cla=
ss=3D"hljs-keyword">\documentvariable</span>{author}}]
<span class=3D"hljs-keyword">\stopxmlsetups</span>

<span class=3D"hljs-comment">% How can this be generalized?</span>
<span class=3D"hljs-comment">%\startxmlsetups xml:journal</span>
  <span class=3D"hljs-comment">%\setupdocument[journal=3D{\xmlatt{#1}{conte=
nt}}]</span>
<span class=3D"hljs-comment">%\stopxmlsetups</span>

<span class=3D"hljs-keyword">\startxmlsetups</span> xml:body
  <span class=3D"hljs-keyword">\startdocument</span>
    Author: <span class=3D"hljs-keyword">\documentvariable</span>{author}

    <span class=3D"hljs-keyword">\par</span>

    Journal: <span class=3D"hljs-keyword">\documentvariable</span>{journal}
  <span class=3D"hljs-keyword">\stopdocument</span>
<span class=3D"hljs-keyword">\stopxmlsetups</span>

<span class=3D"hljs-keyword">\xmlprocessbuffer</span>{main}{xdoc}{}</code><=
/pre></div><div><br></div><div>Thank you!<br></div><div><br></div></div>

--00000000000057f20d05d48faf1f--

--===============5290307857576075449==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline
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--===============5290307857576075449==--