den4b Forum

eR@SeR

Senior Member

Registered: 2008-01-23

Posts: 357

Copy second part of filename to the same beginning of file to its end

Hi there people!

It passed some time...but here I am

Let me explain my problem by showing some examples that are added in file table:

(C 0909-1)P1 010,015.pdf                      ------------>   (C 0909-1)P1 010,015.pdf
(C 0909-1)P2.pdf                                  ------------>   (C 0909-1)P2 010,015.pdf
UvKO(T 0906-3)P1 070,071,072,073.jpg  ------------>  UvKO(T 0906-3)P1 070,071,072,073.jpg
UvKO(T 0906-3)P2.jpg                         ------------>   UvKO(T 0906-3)P2 070,071,072,073.jpg
UvKV(C 0908-6)P1 471FL, 471,472.jpg   ------------>    UvKV(C 0908-6)P1 471FL, 471,472.jpg
UvKV(C 0908-6)P2.jpg                         ------------>   UvKV(C 0908-6)P2 471FL, 471,472.jpg

I want to add missing characters, in this case digits of corresponding filename, after P2 part. Those files are in same path, occurring various extensions. Any clues?

den4b

Administrator

From: den4b.com

Registered: 2006-04-06

Posts: 3,497

Re: Copy second part of filename to the same beginning of file to its end

Love a good programming challenge!

The script below will compare each filename with the previous filename and will fill the missing part if both names share a significant portion of the name, as defined by minimum similarity requirements (SimilarityRatio and SimilarityMinChars constants).

Input:

(C 0909-1)P1 010,015.pdf
(C 0909-1)P2.pdf
UvKO(T 0906-3)P1 070,071,072,073.jpg
UvKO(T 0906-3)P2.jpg
UvKV(C 0908-6)P1 471FL, 471,472.jpg
UvKV(C 0908-6)P2.jpg

Output:

(C 0909-1)P1 010,015.pdf
(C 0909-1)P2 010,015.pdf
UvKO(T 0906-3)P1 070,071,072,073.jpg
UvKO(T 0906-3)P2 070,071,072,073.jpg
UvKV(C 0908-6)P1 471FL, 471,472.jpg
UvKV(C 0908-6)P2 471FL, 471,472.jpg

Script:

const
  SimilarityRatio = 0.50; // at least 50% of same characters
  SimilarityMinChars = 3; // at least 3 same characters

function CountSameCharsFromStart(A, B: WideString): Integer;
var
  I, Count: Integer;
begin
  A := WideUpperCase(A);
  B := WideUpperCase(B);
  Result := 0;
  if Length(A) < Length(B) then
    Count := Length(A)
  else
    Count := Length(B);
  for I := 1 to Count do
    if A[I] = B[I] then
      Inc(Result)
    else
      Exit;
end;

function FillFromPreviousName(const PreviousName, CurrentName: WideString): WideString;
var
  CountSameChars: Integer;
  CountSameRatio: Double;
begin
  Result := CurrentName;
  if Length(PreviousName) > 0 then
  begin
    CountSameChars := CountSameCharsFromStart(CurrentName, PreviousName);
    if CountSameChars > 0 then
    begin
      CountSameRatio := 1.0 * CountSameChars / Length(CurrentName);
      if (CountSameRatio >= SimilarityRatio) and (CountSameChars >= SimilarityMinChars) then
        Result := CurrentName + Copy(PreviousName, Length(CurrentName) + 1,
          Length(PreviousName) - Length(CurrentName));
    end;
  end;
end;

var
  PreviousName, CurrentName: WideString;

begin
  CurrentName := WideExtractBaseName(FileName);
  FileName := FillFromPreviousName(PreviousName, CurrentName) + WideExtractFileExt(FileName);
  PreviousName := CurrentName;
end.

---

A story of software development, and how it all evolves into Live vs Pro
Request a Wiki account | Reporting spam and abuse | Why did I get banned?

eR@SeR

Senior Member

Registered: 2008-01-23

Posts: 357

Re: Copy second part of filename to the same beginning of file to its end

Wow you made it possible! Thank you, Denis

Note: There were some undesired matches on already renamed files, but script do the job on rest of missing parts. That is because of "minimum similarity requirements".

Input:

(C 0906-1)P1 151,161-152,162.pdf
(C 0906-1)P2 151,161-152,162.pdf
(C 0906-2)P1 154.pdf
(C 0906-2)P2 154.pdf

Output:

(C 0906-1)P1 151,161-152,162.pdf
(C 0906-1)P2 151,161-152,162.pdf
(C 0906-2)P1 154,161-152,162.pdf
(C 0906-2)P2 154.pdf

Input:

(C 0906-1)P1 151,161-152,162.pdf
(C 0906-1)P2 151,161-152,162.pdf
(C 0906-2)P1 154.pdf
(C 0906-2)P2 154.pdf

Output:

(C 0906-1)P1 151,161-152,162.pdf
(C 0906-1)P2 151,161-152,162.pdf
(C 0906-2)P1 154,161-152,162.pdf
(C 0906-2)P2 154.pdf

Last edited by eR@SeR (2015-08-31 07:31)