\processcommalist and load values into macros.

* \processcommalist and load values into macros.
@ 2013-06-03 21:47 Jaroslav Hajtmar
  2013-06-04 17:34 ` Wolfgang Schuster
  0 siblings, 1 reply; 5+ messages in thread
From: Jaroslav Hajtmar @ 2013-06-03 21:47 UTC (permalink / raw)
  To: mailing list for ConTeXt users

Hello ConTeXist.
Obviously I have a problem with expansion. My question is:
How can I place the elements of the list into macros for later use?
Basically, my point is that I want assign individual values into macros 
within the cycle of and those subsequently used in a buffer to 
creating my own report.
Perhaps is can be understood what I want from my minimal example.

Thanx
Jaroslav Hajtmar

Minimal example:

\let\filename\null
\let\firstname\null
\let\surname\null
\let\city\null
\let\street\null
\let\postcode\null

\def\dosomething#1{#1\par}

\def\loadlistdatatomacros#1,#2,#3,#4,#5 {
\global\def\firstname{#1}
\global\def\surname{#2}
\global\def\town{#3}
\global\def\street{#4}
\global\def\postcode{#5}
}

\startbuffer[mypostbuffer]
\dosomething

% \loadlistdatatomacros
FIRSTNAME: \firstname\par
SURNAME: \surname\par
CITY \city\par
STREET \street\par
POSTCODE \postcode\par
\page
\stopbuffer

\starttext

\processcommalist[
{John, Smith, Prague, Václavské náměstí 20, 11500 },
{Peter, Paul, Brno, Nad struhou 232/12, 234 20 },
{Annie, Walter, Ostrava, Pod lipami 7, 321 54 },
]{\getbuffer[mypostbuffer]}

\stoptext

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