Solved

filename collision

Posted on 2004-04-05
1
237 Views
Last Modified: 2010-05-19
Hi,

  is there an algorithm that will prevent a rename collision. or should i say if i have a file name
  file1.txt and file2.txt   and i will rename file2.txt to file1.txt it will not prompt for filename exists
  but instead it will rename it to file1a.txt and so on and so forth?


0
Comment
Question by:aerokevs
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 17

Accepted Solution

by:
mokule earned 125 total points
ID: 10756443
// procedure renames file OldName to NewName
// if file NewName exists the name is expanded with _NNN
// starting from _001
// until free number is found

procedure MyRenameFile(OldName,NewName: string);
var
  TempName,Ext : string;
  P: integer;
  Cnt: integer;
begin
  if FileExists(NewName) then
    begin
    Ext := ExtractFileExt(NewName);
    P := Pos(Ext,NewName);
    TempName := Copy(NewName,1,P-1);
    Cnt := 1;
    repeat
      begin
      NewName := Format('%s_%3.3d%s',[TempName,Cnt,Ext]);
      Inc(Cnt);
      end;
    until not FileExists(NewName);
    end;
  RenameFile(OldName,NewName);
end;
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A lot of questions regard threads in Delphi.   One of the more specific questions is how to show progress of the thread.   Updating a progressbar from inside a thread is a mistake. A solution to this would be to send a synchronized message to the…
Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
Suggested Courses
Course of the Month6 days, 14 hours left to enroll

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question