Retrieve specific text from TString

Hi,

What I want to do is to retrieve f.e. the name and date stored somewhere within a TString based on the preceding text.

Dear mister Long,

Client name: Sally Field
Date: 23/03/2014

With kind regards,

Open in new window


In this example a function would:
- Search for string "Client name: "
- If found, the function will return "Sally Field" (whole text after the searchstring)
- Search for string "Date: "
- If found, the function will return "23/03/2014" (whole text after the searchstring)

How can this be done?
Stef MerlijnDeveloperAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ThommyCommented:
Try this...
function GetClientName(s:string):string;
var
  p: integer;
begin
  result:='';
  p:=pos('Client Name:',s);
  if p>0 then
    result:=Trim(Copy(s,p+Length('Client Name:'),Length(s)));
end;

function GetDate(s:string):string;
var
  p: integer;
begin
  result:='';
  p:=pos('Date:',s);
  if p>0 then
    result:=Trim(Copy(s,p+Length('Date:'),Length(s)));
end;

Open in new window

0
ThommyCommented:
Or use one universal function...
function GetValueAfterPrecText(s:string;PrecText:string):string;
var
  p: integer;
begin
  result:='';
  p:=pos(PrecText,s);
  if p>0 then
    result:=Trim(Copy(s,p+Length(PrecText),Length(s)));
end;

...

s:=GetValueAfterPrecText('Client name: Sally Field','Client Name:'); //returns "Sally Field"
s:=GetValueAfterPrecText('Date: 23/03/2014'          ,'Date:');              //returns "23/03/2014"

Open in new window

0
Stef MerlijnDeveloperAuthor Commented:
The function does position at the correct startingpoint, but it gets everything that comes after the search-text.
Dear mister Long,

Client name: Sally Field
Date: 23/03/2014

With kind regards,

Open in new window

In my example the GetValueAfterPrecText(MyText,'Client name: '); will return
Sally Field
Date: 23/03/2014

With kind regards,

Open in new window

It should only give me the text on the same line. In this case "Sally Field".
It should stop at the point of a hard of soft line-break.
0
ThommyCommented:
I already wondered, but you said, you wanted the "whole text after the searchstring" and did not make any mention of line breaks!!!

Ok, then you have to search for the line breaks.
So this is your code...

function GetValueAfterPrecText(s:string;PrecText:string):string;
var
  p: integer;
begin
  result:='';
  s := StringReplace(s, #13, '', [rfReplaceAll]);

  p:=pos(PrecText,s);
  if p>0 then begin
    s:=Copy(s,p+Length(PrecText),Length(s));
    p:=pos(#10,s);
    if p>0 then begin
      result:=Trim(Copy(s,1,p-1));
    end;
  end;
end;

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Stef MerlijnDeveloperAuthor Commented:
Perfect, thank you.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Delphi

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.