[NTG-context] XML to ConTeXt: converting date attribute from ISO date

Wed Mar 11 14:14:37 CET 2020

> Am 15.08.2018 um 14:04 schrieb Hans Hagen <j.hagen at xs4all.nl>:
> 
> On 8/15/2018 12:27 PM, Mike O'Connor wrote:
>> G’Day,
>> Having a first go at converting TEI XML to ConTeXt.
>> Steep learning curve, but easier (for me) than XSLT, and first results were amazing.  Using http://www.pragma-ade.com/general/manuals/xml-mkiv.pdf as a guide.
>> Currently stuck on converting an ISO format date (eg. 1908-01-10) into something more readable (eg. 10 January 1908) in the output.  I presume I should create a function (?luacode) that can take any ISO value and output the readable form.  The following works but seems to me inefficient.
>> Grateful for any pointers.
>> Mike
>> Here is my MWE:
>> \startbuffer[demo]
>> <TEI>
>>     <text>
>>         <body>
>>             <div type="letter">
>>                 <opener>
>>                     <date when-iso="1908-01-10" type="divDate">10.I.08</date>
>>                 </opener>
>>                 <closer>
>> <date when-iso="1908-03-19" type="secondDate">19 Mar '08</date>
>>                 </closer>
>>             </div>
>>         </body>
>>     </text>
>> </TEI>
>> \stopbuffer
>> \startxmlsetups xml:initialize
>> \xmlsetsetup{#1}{date}{xml:date}
>> \stopxmlsetups
>> \xmlregistersetup{xml:initialize}
>> \startxmlsetups xml:date
>> \xmldoifelse {#1}{.[@type='divDate']} {
>> \def\docdate{\ctxlua{
>> local tyear = string.sub('\xmlatt{#1}{when-iso}',1,4)
>> local tmonth = string.sub('\xmlatt{#1}{when-iso}',6,7)
>> local tday = string.sub('\xmlatt{#1}{when-iso}',9,10)
>> context.date{d = tday, m = tmonth, y = tyear}
>> }}
>> \docdate[day,month,year] = Document Date \par
>>     } {
>> \def\docdate{\ctxlua{
>> local tyear = string.sub('\xmlatt{#1}{when-iso}',1,4)
>> local tmonth = string.sub('\xmlatt{#1}{when-iso}',6,7)
>> local tday = string.sub('\xmlatt{#1}{when-iso}',9,10)
>> context.date{d = tday, m = tmonth, y = tyear}
>> }}
>> \docdate[day,month,year] = Event Date\par
>> }
>> \stopxmlsetups
>> \starttext
>> \xmlprocessbuffer{main}{demo}{}
>> \stoptext
> Can be wikified ...
> 
> \startluacode
>    function xml.finalizers.tex.MyDate(e,what,how)
>        local t = string.split(e[1].at[what],"-")
>        context.date(
>            { y = t[1], m = t[2], d = t[3] },
>            { how }
>        )
>    end
> \stopluacode
> 
> \startxmlsetups xml:date
> 
> 	\xmldoifelse {#1}{.[@type='divDate']} {
>        \xmlfilter{#1}{./MyDate("when-iso","day,month,year")}\
>    	Document Date \par
>    } {
>        \xmlfilter{#1}{./MyDate("when-iso","day,month,year")}\
>        Event Date\par
> 
> 	}
> \stopxmlsetups

I couldn’t get this to work.
Had to change it to:

\startluacode
   function xml.finalizers.tex.MyDate(e,what,how)
       local ee = e[1].at[what]
       local t = (string.split(ee,"-"))
       context.date(
           { y = t[1], m = t[2], d = t[3] },
           { how }
       )                 
   end
\stopluacode

mtx-context     | ConTeXt Process Management 1.03
mtx-context     |
mtx-context     | main context file: /Volumes/Macintosh HD/usr/local/texlive/context-109/tex/texmf-context/tex/context/base/mkiv/context.mkiv
mtx-context     | current version: 2020.01.30 14:13
mtx-context     | main context file: /Volumes/Macintosh HD/usr/local/texlive/context-109/tex/texmf-context/tex/context/base/mkiv/context.mkxl
mtx-context     | current version: 2020.01.30 14:13

Greetings Axel