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Institut für Astronomie und Astrophysik

Abteilung Astronomie

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NEXTTOK Source code in nexttok.pro


       Find the next occurance of any of a set of characters in a
       string and return the character which occurs next.
Calling Sequence
       tok = nexttok( strn, tokens )
Input Parameters
       strn   -- string to be searched for sub/superscripts    in
       tokens -- string containing characters to be found.     in
Keyword Parameters
       POSITION -- Set to a named variable to get position     out
                   of next token, or -1 if none found.
       /HELP    -- Print useful message and exit.
Output Parameters
       tok    -- Contains the character among tokens which     out
                 occurs next in strn, or null '' if none found.
Common Blocks

Side Effects


       nexttok( 'x^2 + N_j^3', '^_', position=pos ) returns '^' and sets
       pos to 1.
Revision History
       $Id: nexttok.pro,v 1.4 2004/06/15 17:25:54 mcraig Exp $
       $Log: nexttok.pro,v $
       Revision 1.4  2004/06/15 17:25:54  mcraig
       Fixed bug in regular expression, changed array notation to square brackets
       Revision 1.3  1996/06/14 20:00:27  mcraig
       Updated Copyright info.
       Revision 1.2  1996/05/09 00:22:17  mcraig
       Generalized so that the next occurence of any of a set of characters will
       be returned.
       Revision 1.1  1996/01/31 18:41:06  mcraig
       Initial revision
       $Name: Rel_2_1_2 $
  Copyright (C) 1996 The Regents of the University of California, All
  Rights Reserved.  Written by Matthew W. Craig.
  See the file COPYRIGHT for restrictions on distrubting this code.
  This code comes with absolutely NO warranty; see DISCLAIMER for details.

Last modified by pro2html on 2004 June 29 at 21:24 UTC

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Jörn Wilms (wilms@astro.uni-tuebingen.de)
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