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  • Subject: RE: BIF to trim leading 0's
  • From: "Stone, Brad V (TC)" <bvstone@xxxxxxxxxxxxxx>
  • Date: Mon, 12 Mar 2001 10:18:01 -0600

The point was that since we have to compile to V3R2 right now, this works.
The new BIFS aren't available.  So, if you were going to rewrite it, just
use the new BIFs.  :)

Cool thing about ILE, when we do make our customers go to V3R7, we can leave
it alone and it will still work.  

Brad

> -----Original Message-----
> From: boldt@ca.ibm.com [mailto:boldt@ca.ibm.com]
> Sent: Monday, March 12, 2001 9:13 AM
> To: rpg400-l@midrange.com
> Subject: RE: BIF to trim leading 0's
> 
> 
> 
> Brad wrote:
> >Here goes.  I hope it comes through ok.  This is old source 
> written for
> V3R3
> >and could probably updated...
> >
> >I usually call it like this:
> >
> >#ZChar(field:%size(field))
> >
> >      
> *//////////////////////////////////////////////////////////////*
> >      * (#ZChar) Zero Supress A Character Field              
>         *
> >      *                                                      
>         *
> >      * This procedure will replace all leading zeros with 
> blanks.   *
> >      
> *//////////////////////////////////////////////////////////////*
> >     P #ZChar          B                   EXPORT
> >      
> *--------------------------------------------------------------*
> >     D #ZChar          PI           256
> >     D  text                        256    VALUE
> >     D  size                          3  0 VALUE
> >...
> 
> Brad:  You're absolutely right, that code could certainly be updated
> to take advantage of features newer than V3R2.  First, for simple
> zero suppression of numeric values, %CHAR would probably be a better
> choice.  But lets write a more robust procedure that allows you to
> strip ANY arbitrary characters from the left end of a string, not
> just zeros:
> 
> ===========================================================
> P Strip           b
> D Strip           pi           256a   varying
> D   string                     256a   const varying
> D   char                       256a   const varying options(*nopass)
> D i               s             10i 0
> D ch              s            256a   varying inz('0')
>  /free
>     // default to '0' if second parm not specified
>     if %parms >= 2;
>        ch = char;
>     endif;
> 
>     // locate first char not equal to strip char
>     i = %check(ch:string);
>     if i = 0;
>        return '';
>     endif;
>     return %subst(string:i);
>  /end-free
> P Strip           e
> ===========================================================
> 
> By default, this strips leading zeros.  But if you specify an
> optional second parameter to the procedure, you can strip off any
> other characters you want.
> 
> Although this is written using the new V5R1 syntax, (and compiled
> and tested on a V5R1 machine) this should be easy to rewite to run
> on a V4R4 system.
> 
> Examples of use:
>   Strip('0000123')        ===> '123'
>   Strip('****456':'*')    ===> '456'
>   Strip('$***456':'*$')   ===> '456'
> 
> Cheers!  Hans
> 
> Hans Boldt, ILE RPG Development, IBM Toronto Lab, boldt@ca.ibm.com
> 
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