Delphi read next line and replace

Question

I have a program that imports a text file that has many entrys:

###
Starttime: 06.03.2008
Data: SOME RECORDS HERE

###
Starttime: 21.03.2008
Data SOME RECORDS HERE

... and so on

Not I want to have an end time after "Data:" that is the next starttime -1 so i have

###
Starttime: 06.03.2008
Data: SOME RECORDS HERE
EndTime: 20.03.2008

###
Starttime: 21.03.2008
Data SOME RECORDS HERE
EndTime: (next starttime -1)

... and so on

Answer 1

The easiest way would be to read the file into a TStringList and work there.

Pseudocode:

var 
  S: TStringList;
  i: Integer;
  LastDate: TDateTime;
  CurDate: TDateTime;
begin
  S := TStringList.Create;
  S.LoadFromFile('c:\...');

  i := 0;
  while i < S.Count do
  begin
    if S[i] = "###" then
    begin
      CurDate := StrToDate(S[i+1])
      S.Insert(i-3, DateToStr(CurDate));
      LastDate := CurDate;
      i := i+2;
    end else
    begin
      i := i+1;
    end;
  end;
  S.SaveToFile('c:\...');
end;

This code is not very robust, it doesn't check for any special cases, like the first starting date, but it should be enough to get you started.