Re: Triming CL stings? (correction)

Hi, Dave:

Correction to my previous example, to prevent infinite loop when &STRING is all blank. :-o

Assume we have &STRING declared as:

DCL &STRING *CHAR 255

I would code something like this:

IF (&STRING *NE ' ') THEN(DO)
/* left trim string */
LTRIM: IF (%SST(&STRING 1 1 = ' ') THEN(DO)
CHGVAR VAR(&STRING) VALUE(%SST(&STRING 2 254))
GOTO LTRIM
ENDDO
ENDDO

It is not "pretty" but it works...

At V5R3 and above, you can code this as:

/* left trim string */
DOWHILE COND((&STRING *NE ' ') & (%SST(&STRING 1 1) = ' '))
CHGVAR VAR(&STRING) VALUE(%SST(&STRING 2 254))
ENDDO

To trim trailing blanks, use *TCAT when concatenating &STRING into some other variable.

HTH,

Mark S. Waterbury

> daparnin@xxxxxxxxxxxxxx wrote:

Is it possible to trim leading and/or trailing blanks from strings in CLP or CLLE programs? I've got a legacy CLP program that builds string to do the selection of an open query file. It's a this or that test and I'm trying to build another string to concatenate into the middle of it with a more complex condition. I don't have a problem with the logic, just formatting the string to remove excessive blanks. Is this possible?


Dave Parnin