RE: Weirdness with MoveToString()

Question

Jack,
Did you reset the offset of the textdata to 0 before you use the
MoveToString method? For example,
AText : TextData;
Atext.offset = 0;
If AText.MoveToString('MyString') then
End if;
Hope this help.
Tien Wang
Tien Wang
Indus Consultancy Services
[phone] ext 236
[email protected]
From: Jack Runnels[SMTP:[email protected]]
Reply To: Jack Runnels
Sent: Tuesday, April 21, 1998 10:52 AM
To: Forte' Users Group (E-mail)
Subject: Weirdness with MoveToString()
I am doing a large amount of parsing of HTTP source code to generate
attributes for a multitude of objects. To capture values for these
attributes, I create a TextData object, set its value to be the source
code, then use the MoveToString() method to get to an indicator of
that
attribute. In most incidences of my code, I use an explicitly typed
in
string. In 10 incidences, however, I use a string constant. The
MoveToString() method works fine with all of these. In a new call I
am
doing, I use a string constant, and the method does not work. It
returns
FALSE, even though the string I am searching for is in the source
code. If
I explicitly type the search string, or use a TextData object with its
value set to the string constant, it works.
Does anyone know why the MoveToString() method would not work with a
string
constant for one specific call, when it works with all other similar
calls
I've made? If I use a TextData object with its value set to the
string
constant in the future, can I be assured that a similar problem won't
occur?
Jack Runnels
Consultant
Albion International, Inc.
Voice: 770.980.6753 or
800.492.1048
FAX: [phone]
Internet: [email protected]

Answer 1

Jack, I had similar problem in my project.
Forte uses C - style zero delimited string and my guess is that
in the case of constant it is searching for complete string, delimiter
included. Although it is no brainer to write a simple test I never
got to do it. Hope that helps, Boris.
Jack Runnels wrote:
>
I am doing a large amount of parsing of HTTP source code to generate
attributes for a multitude of objects. To capture values for these
attributes, I create a TextData object, set its value to be the source
code, then use the MoveToString() method to get to an indicator of that
attribute. In most incidences of my code, I use an explicitly typed in
string. In 10 incidences, however, I use a string constant. The
MoveToString() method works fine with all of these. In a new call I am
doing, I use a string constant, and the method does not work. It returns
FALSE, even though the string I am searching for is in the source code. If
I explicitly type the search string, or use a TextData object with its
value set to the string constant, it works.
Does anyone know why the MoveToString() method would not work with a string
constant for one specific call, when it works with all other similar calls
I've made? If I use a TextData object with its value set to the string
constant in the future, can I be assured that a similar problem won't
occur?
Jack Runnels
Consultant
Albion International, Inc.
Voice: 770.980.6753 or
800.492.1048
FAX: [phone]
Internet: [email protected]