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how can i split this string?

Posted on 2009-05-14
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Last Modified: 2012-05-06
im new to delphi...
 i have a string like this  " 123|asd1|fhgj2|er3|45678| " 
and i need to split it up.
i figured out how to do it IF it has different separators (eg " %123|asdf*fhgj^er|) like this
textin := %123|asdf|fhgj|er|45678|
 text1 := copy(textin, 1, pos('%', textin)-1);
  Delete(textin, 1, pos('%', textin)-1);
 text2 := copy(textin,1 ,pos('|', textin)-1);
  Delete(textin, 1, pos('|', textin)-1);
...
  L := Form2.ListView1.Items.Add;
  L.Caption := info;
  L.SubItems.Add(text1);
  L.SubItems.Add(text2);
ect

but how do i do it if the separators are the same?


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Question by:electrodude102
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6 Comments
 
LVL 2

Accepted Solution

by:
Usurpatirus earned 150 total points
ID: 24382522
you may use StringReplace function, or while loop:
procedure TForm1.Button2Click(Sender: TObject);
var
Str : String;
begin
Str := '%123|asdf*f|hgj^|er|';
 
   with Listview1.Items.Add do
   begin
        Caption := Copy(Str,1, Pos('|',Str)-1);
        system.Delete(Str,1,Pos('|',Str));
   while Trim(Str)<>'' do
   begin
        Subitems.Add(Copy(Str,1, Pos('|',Str)-1));
        System.Delete(Str,1,Pos('|',Str));
   end;
   end;
end;
 
 
procedure TForm1.Button1Click(Sender: TObject);
var
Str : String;
begin
Str := '%123|asdf*f|hgj^|er|';
with Listview1.Items.Add do
begin
        Caption := Copy(Str,1, Pos('|',Str)-1);
        System.Delete(Str,1,Pos('|',Str));
        SubItems.Text := (StringReplace(Str,'|',#13,[rfReplaceAll, rfIgnoreCase]));
end;
end;

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LVL 9

Expert Comment

by:Graceful_Penguin
ID: 24382549
You just have to loop the code you have there and it will work. I used ShowMessage to test if it works but I have also given you the code to add it to the listview in comments.
textin := '123|asdf|fhgj|er|45678';
while (pos('|', textin) > 0) do
begin
  text1 := copy(textin, 0, pos('|', textin)-1);
  Delete(textin, 1, pos('|', textin));
 
 
//  L := Form2.ListView1.Items.Add;
//  L.Caption := info;
//  L.SubItems.Add(text1);
ShowMessage(text1);
ShowMessage(textin);

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0
 
LVL 9

Expert Comment

by:Graceful_Penguin
ID: 24382556
sorry did not copy the end;
textin := '123|asdf|fhgj|er|45678';
while (pos('|', textin) > 0) do
begin
  text1 := copy(textin, 0, pos('|', textin)-1);
  Delete(textin, 1, pos('|', textin));
 
 
//  L := Form2.ListView1.Items.Add;
//  L.Caption := info;
//  L.SubItems.Add(text1);
  ShowMessage(text1);
  ShowMessage(textin);
end;

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LVL 1

Author Comment

by:electrodude102
ID: 24382733
Graceful_Penguin: that works but i need a var(?) for each "set" of the string (not sure how to explain it..)
 
example: if the string in was '123|asdf|fhgjer|45678' it does this
text0 := 123
text1 := asdf
text2 := fhgjer
text3 := 45678

(cause i need to use them later, get it?)
0
 
LVL 9

Expert Comment

by:Graceful_Penguin
ID: 24382874
The easiest way is to use a stringlist to store the strings but if you don't like that you can use a dynamic array. Here is the source for the string list. Just remember to destroy it when you are done.
var textin, text1 : string;
 Strings : TStringlist;
 counter : integer;
begin
   textin := '123|asdf|fhgj|er|45678';
   Strings := TStringlist.Create;
   counter := 0;
while (pos('|', textin) > 0) do
begin
  Strings.Add(copy(textin, 0, pos('|', textin)-1));
  Delete(textin, 1, pos('|', textin));
 
 
//  L := Form2.ListView1.Items.Add;
//  L.Caption := info;
//  L.SubItems.Add(text1);
   ShowMessage(Strings[counter]);
   ShowMessage(textin);
   inc(counter);

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LVL 1

Author Comment

by:electrodude102
ID: 24387267
im going to accept Usurpatirus answer cause after messing around with it it seems he most usable, thanks you all your help
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