On 1/2/2022 2:54 AM, Thangalin via ntg-context wrote:
Happy New Year!
How would you implement a mechanism that takes arbitrary XHTML <meta> tags and produces document variables? Consider:
<meta name="journal" content="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="Milena Marić Einstein" name="author"/> <meta content="Annalen der Physik" name="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='author']/command(xml:author)} % What goes here to make this dynamic? %\xmlfilter{#1}{/head/meta[@name='journal']/command(xml:journal)} \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:author \setupdocument[author={\xmlatt{#1}{content}}] \setupdocument[metadata:author={\xmlatt{#1}{content}}] \setupinteraction[author={\documentvariable{author}}] \stopxmlsetups % How can this be generalized? %\startxmlsetups xml:journal %\setupdocument[journal={\xmlatt{#1}{content}}] %\stopxmlsetups \startxmlsetups xml:body \startdocument Author: \documentvariable{author} \par Journal: \documentvariable{journal} \stopdocument \stopxmlsetups \xmlprocessbuffer{main}{xdoc}{}|
\startxmlsetups xml:setdocumentvariable \setupdocument[\xmlatt{#1}{name}={\xmlatt{#1}{content}}] \stopxmlsetups
\startxmlsetups xml:author \setupdocument[author={\xmlatt{#1}{content}}] \setupdocument[metadata:author={\xmlatt{#1}{content}}] \setupinteraction[author={\documentvariable{author}}] \stopxmlsetups
\startxmlsetups xml:html \xmlfilter{#1}{/head/meta/command(xml:setdocumentvariable)} \xmlfilter{#1}{/head/meta[@name='author']/command(xml:author)} \startdocument \xmlflush{#1} \stopdocument \stopxmlsetups
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