Re: Scanning a STMF for a string

[Terrence Enger <tenger@xxxxxxxxxxxxxxxx>]

Tïhank you, Scott.  This is much cleaner than the code I was hacking
together toward the same end.

However, we seem to have reached the same point:  ordinary characters
are okay, embedded blanks are okay, embedded double quotes are okay, and
an embedded single quote makes the program fall over.  Sigh.

I think the problem can be changed by an additional filter between sed
and datarea:
    ( read x ; echo "${x//'/''}" )
I say changed rather than fixed because datarea seems to count the
doubled single quote twice, provoking message "datarea: 001-2353 The
length of the data (21) is greater than the message length (20) of the
data queue."  Sigh, sigh.  If you truncate the string down to twenty
characters including the doubled single quote you end up with only the
leading nineteen characters in the data area.  Sigh, sigh, sigh.

Can you come up with a simple solution for this one, Scott?

Cheers,
Terry.


On Thu, 2009-09-17 at 13:47 -0500, Scott Klement wrote:
> hi James,
>
> > Somewhere, buried in the stream file of arbitrary length, there may or 
> > may not be a string of the form
> >      foo="<block of 20 characters>"
>
> This is very similar to what Dennis Lovelady just posted... ack, I'm too 
> slow... but mine does have some differences from his, so I'm posting it 
> anyway:
>
> PGM
>
>      CRTDTAARA  DTAARA(TESTAREA) TYPE(*CHAR) LEN(20)
>      MONMSG CPF1023
>
>      ADDENVVAR ENVVAR(QIBM_QSH_CMD_ESCAPE_MSG) REPLACE(*YES) +
>                VALUE(Y)
>      ADDENVVAR ENVVAR(STMF) REPLACE(*YES) +
>                VALUE('/home/klemscot/testfile.txt')
>      ADDENVVAR ENVVAR(DTAARA) REPLACE(*YES) +
>                VALUE('TESTAREA')
>
>      QSH CMD('cat $STMF | +
>               sed -n ''s/.*foo="\(....................\)".*/\1/p'' | +
>               datarea -wl $DTAARA.dtaara')
>
>      DSPDTAARA TESTAREA
>
> ENDPGM
>
> Differences between mine & Dennis:
>
> a) Mine assumes the foo= can appear in the middle of other text.  (I'm 
> actually assuming you're trying to grab this out of an XML file)
>
> b) Mine assumes data between quotes is always 20 chars, period.  Dennis 
> solution will take any length... (maybe I took you too literally)
>
> c) Mine writes the output to a data area, his wrote it to an environment 
> variable inside Qshell.
>
> d) If there's more than one foo= string in the file, mine will only take 
> the first one.  Dennis' will take them all (but store them all together 
> in one variable.)
>
> So... mine is very similar, in some ways better, in some ways worse than 
> Dennis'... but I thought it might be worth posting anyway.