Consultor Eletrônico

Status: Unverified

GOAL:

To further document the Initial Value Segment No Convert startup parameter (-isnoconv).

FACT(s) (Environment):

Progress 9.1x

FIX:

The -isnoconv parameter is a startup parameter that is used purely at compile time. If you want to avoid the additional conversion of text literals provided from -cprcodein to -cpinternal, the parameter must be used to start the compilation session.

For an example, follow these steps:

1) Enter the following code and save it as isnoconv.p:

/* isnoconv.p */
def var v as char init "áéíóú".
def var str as char init "ÊTÄT":U .

def var tempkey as inte.

display str
ASC(substring(str,1,1)) FORMAT "999"
ASC(substring(str,2,1)) FORMAT "999"
ASC(substring(str,3,1)) FORMAT "999"
ASC(substring(str,4,1)) FORMAT "999" WITH FRAME f2.

display v
ASC(substring(v,1,1)) FORMAT "999"
ASC(substring(v,2,1)) FORMAT "999"
ASC(substring(v,3,1)) FORMAT "999"
ASC(substring(v,4,1)) FORMAT "999"
ASC(substring(v,4,1)) FORMAT "999" WITH FRAME f3.

update v with frame f1 width 20 editing :
readkey.
apply lastkey.
display lastkey.
end.

2) Make a directory, noconv from your working
directory.

3) Start a 9.1A session with:

Prowin32.exe -cpstream ibm850 -cpinternal ibm850

4) Compile isnoconv.p with:

compile isnoconv.p save

5) Start a 9.1A session with:

Prowin32.exe -cpstream ibm850 -cpinternal ibm850
-isnoconv

6) Compile isnoconv.p with:

compile isnoconv.p save into noconv

7) Start a Progress Version 9.1A session with:

Prowin32.exe -cpinternal 1252

8) Run:

RUN isnoconv.p.
RUN noconv/isnoconv.p.

You can see the differences in the output caused by compiling with and without the -isnoconv parameter. Compiling without the parameter converts the already pre-converted text literals to cpinternal (1252) when the r code is read into memory. This consequently produced an incorrect result. Compiling with
-isnoconv parameter prevents the additional conversion.