ReNamer:Scripts:RegEx Case Convertion

The script compensates for the lack of the ability of ReNamer's RegEx engine to change case of groups captured by RegEx.

User needs to provide REGEX and CHANGE_CASE parameters to the script controls. The exact form of the CHANGE_CASE string is explained in the legend below the main controls.

Tested

• ReNamer 5.50

Code

Author: krtek. Date: 26 July 2009.

const

//SCRIPT CONTROLS:

REGEX = '(.+) - (.+) - (.+)';
CHANGE_CASE = '102';  

SKIP_EXTENTION = true;         //true or false
CASE_SENSITIVE = False;        //Should searching with regex be case sensitive? Default: False
FULL_MATCH_CHECK = True;       //Should the script warn you if regex didn't match the full filename? Default: True;
         

//Legend for CHANGE_CASE parameter:
//1. Capitalize Every Word
//2. lowercase
//3. UPPERCASE
//4. iNVERT cASE
//5. First letter capital
//0. No changes
//You may specify case for every capturing group (brackets) in regex as a string of appropriate digits.
//If the CHANGE_CASE string is shorten then number of capturing groups then the last digit is used till the end of regex.
//If the CHANGE_CASE string is longer, spare digits are ignored. 
//eg. '102' means that first matched brackets will be uppercased,
// second - won't be changed and third (and every brackets after it) - lowercased.



//END OF SCRIPT CONTROLS


BREAK_STRING = 'BREAK';
FOR_ALL_STRING = 'DO NOT ASK';
STANDARD_ANSWER = BREAK_STRING+' to exit, '+FOR_ALL_STRING+' to continue';



var
  Matches, SubPatterns : TStringsArray;
  TempFilename, FileNameProcessedPart : WideString;
  start_pos, end_pos, i, j : Integer;
  Initialized, TimeToExit, NotAFullMatch, CheckIfFullMatch : Boolean;
  CaseFlags : array of Integer;
  CaseFlag : Integer;
  Answer : WideString;
  


function SetCaseFlags(s : WideString) : array of Integer;
var
i : Integer;
LoopEnd : Integer;
CaseIDs : array of Integer;

begin

  SetLength(CaseIDs,Length(s));
 
  LoopEnd:=Length(s)-1;
  for i:=0 to LoopEnd do
    begin
      CaseIDs[i]:= StrToInt(WideCopy(s,1,1));
      s:=WideCopy(s,2,Length(s)-1);
    end;

  result:= CaseIDs;
end;


procedure Initialize;

begin
  Answer:=STANDARD_ANSWER;
  CheckIfFullMatch:=FULL_MATCH_CHECK;
  Initialized:=true;
  CaseFlags:=SetCaseFlags(CHANGE_CASE);
end;



begin
  
if not TimeToExit then
begin

  if not Initialized then Initialize;

  TempFilename:='';
  end_pos:=0;
  start_pos:=1;
  SetLength(SubPatterns,0);
  SetLength(Matches,0);
  NotAFullMatch:=false;
  
  if SKIP_EXTENTION then
    FileNameProcessedPart:=WideStripExtension(FileName)
  else 
    FileNameProcessedPart:=FileName;
  
  
  Matches:=MatchesRegEx(FileNameProcessedPart, REGEX, CASE_SENSITIVE);
  if Length(Matches) <= 0 then exit;
  if Matches[0] <> FileNameProcessedPart then NotAFullMatch:=true;
  SubPatterns:=SubMatchesRegEx(Matches[0],REGEX,CASE_SENSITIVE);
  if Length(SubPatterns) <=0 then exit;
  
  for i:=0 to Length(SubPatterns)-1 do
    if SubPatterns[i]<>'' then
    begin
      end_pos:=WidePos(SubPatterns[i], Matches[0])-1;
      TempFileName:=TempFileName+WideCopy(Matches[0], start_pos, end_pos-start_pos+1);
      start_pos:=end_pos+Length(SubPatterns[i])+1;
      

      if i < length(CaseFlags)  then
        CaseFlag:=CaseFlags[i]
      else 
        CaseFlag:=CaseFlags[Length(CaseFlags)-1];
        
      case CaseFlag of
        0 : TempFilename:=TempFileName+SubPatterns[i];
        1 : TempFilename:=TempFileName+WideCaseCapitalize(SubPatterns[i]);   
        2 : TempFilename:=TempFileName+WideLowerCase(SubPatterns[i]);
        3 : TempFilename:=TempFileName+WideUpperCase(SubPatterns[i]);
        4 : TempFilename:=TempFileName+WideCaseInvert(SubPatterns[i]);
        5 : TempFilename:=TempFileName+WideUpperCase(SubPatterns[i][1])+
              WideLowerCase(WideCopy(SubPatterns[i], 2, Length(SubPatterns[i])-1));
          
        else
          begin  
            ShowMessage('The value of CHANGE_CASE constant is invalid. Check legend for info.');
            TimeToExit:=True;
            break;
          end;
     end;

   end;
  
  
  if start_pos < Length(FileNameProcessedPart) then
    TempFilename:=TempFileName+WideCopy(FileNameProcessedPart, start_pos, Length(FileNameProcessedPart)-start_pos+1);
 

  if NotAFullMatch then
    if CheckIfFullMatch then    
       begin
         if not WideInputQuery('RegEx didn''t match the full filename.', 'Old filename:'+#10+FileName+#10+#10+
           'Proposed new filename: '+#10+TempFileName+WideExtractFileExt(FileName)+#10+#10+
           'What should we do?'#10+#10+'Pressing OK button = Rename that file'+#10+
           'Pressing Cancek button = Skip that file'+#10+'Type '''+BREAK_STRING+
           ''' in the text field to exit the script or '''+FOR_ALL_STRING+
           ''' if you want to continue with all the files.'+#10, Answer) then Exit
         else if WideSameText(WideLowerCase(Answer),BREAK_STRING) then 
           begin
             TimeToExit:=True;
             exit;
           end
         else if WideSameText(WideLowerCase(Answer),FOR_ALL_STRING) then 
           begin
             CheckIfFullMatch:=False;
           end
         else
           Answer:=STANDARD_ANSWER;
       end;

  if SKIP_EXTENTION then   
    FileName:=TempFileName+WideExtractFileExt(FileName)
  else FileName:=TempFileName;

end
else exit;
 
end.

Thanks to the Stefan's involvement there exists also a version of the script that uses dialog boxes to ask user for required data so no direct changes to the script are needed.

Code 2

Author: krtek & Stefan. Date: 27 July 2009.

const

//SCRIPT CONTROLS:

SKIP_EXTENTION = true;     //true or false
CASE_SENSITIVE = False;    //Should searching with regex be case sensitive? Default: False
FULL_MATCH_CHECK = True;   //Should the script warn you if regex didn't match the full filename? Default: True;
        

DEFAULT_REGEX = '(.+) - (.+) - (.+)';  //exchanged with InputBox
DEFAULT_CHANGE_CASE = '102';  

//Legend for CHANGE_CASE parameter:
//0. No changes
//1. Capitalize Every Word
//2. lowercase
//3. UPPERCASE
//4. iNVERT cASE
//5. First letter capital
//You may specify case for every capturing group (brackets) in regex as a string of appropriate digits.
//If the CHANGE_CASE string is shorten then number of capturing groups then the last digit is used till the end of regex.
//If the CHANGE_CASE string is longer, spare digits are ignored. 
//eg. '102' means that first matched brackets will be uppercased, second - won't be changed and third (and every brackets after it) - lowercased.



//END OF SCRIPT CONTROLS


BREAK_STRING = 'BREAK';
FOR_ALL_STRING = 'DO NOT ASK';
STANDARD_ANSWER = BREAK_STRING+' to exit, '+FOR_ALL_STRING+' to continue';
SCRIPT_NAME = 'krtek''s CaseChanger';


var
  Matches, SubPatterns : TStringsArray;
  TempFilename, FileNameProcessedPart : WideString;
  start_pos, end_pos, i: Integer;
  Initialized, TimeToExit, NotAFullMatch, CheckIfFullMatch : Boolean;
  CaseFlags : array of Integer;
  CaseFlag : Integer;
  Answer, Regex, ChangeCase, Info  : WideString;
  


function BoolToStr(condition : boolean) : WideString;
begin
   If condition Then
        result := 'True'
     Else
        result := 'False';
end;


procedure procGetUserInput;
begin

    
    Info := Info + #10 + 'Note: check script source for this settings:' +#10
    Info := Info + 'SKIP_EXTENTION: '   + #9 + BoolToStr(SKIP_EXTENTION) +#10 
    Info := Info + 'CASE_SENSITIVE: '   + #9 + BoolToStr(CASE_SENSITIVE) +#10 
    Info := Info + 'FULL_MATCH_CHECK: ' + #9 + BoolToStr(FULL_MATCH_CHECK) +#10 
    Regex:=DEFAULT_REGEX;
    If not WideInputQuery(SCRIPT_NAME, 'Match this RegEx on file name:' +#10 +Info, Regex) then 
    begin
      TimeToExit := true;
      exit;
    end;
 
  
  Info := '0. No changes' +#10
  Info := Info + '1. Capitalize Every Word' +#10
    Info := Info + '2. lowercase' +#10
    Info := Info + '3. UPPERCASE' +#10
    Info := Info + '4. iNVERT cASE' +#10
    Info := Info + '5. First letter capital' +#10 +#10
    Info := Info + 'F.ex.:' +#9 + 'use case type 1 for first match ( ),' +#10 +#9 
    Info := Info + '0 for second and 3 for third' +#10 +#9 + '=> 103' +#10 +#10
    ChangeCase := DEFAULT_CHANGE_CASE;
  
  If not WideInputQuery(SCRIPT_NAME, 'Choose case for every single match group ( )'+#10+'of your RegEx:' +#10 + Regex +#10 +#10 + Info, ChangeCase ) then 
  begin
    TimeToExit := true;
    exit;
  end;
 

end;

  

function SetCaseFlags(s : WideString) : array of Integer;
var
i : Integer;
LoopEnd : Integer;
CaseIDs : array of Integer;

begin

  SetLength(CaseIDs,Length(s));
 
  LoopEnd:=Length(s)-1;
  for i:=0 to LoopEnd do
    begin
      CaseIDs[i]:= StrToInt(WideCopy(s,1,1));
      s:=WideCopy(s,2,Length(s)-1);
    end;

  result:= CaseIDs;
end;


procedure Initialize;

begin
  Answer:=STANDARD_ANSWER;
  CheckIfFullMatch:=FULL_MATCH_CHECK;
  FilePath := 'not used';   //just to shut up the compiler
  procGetUserInput;
  CaseFlags:=SetCaseFlags(ChangeCase);
  Initialized:=true;
end;



begin
  
  
if not TimeToExit then
begin

  if not Initialized then Initialize;
  
  TempFilename:='';
  end_pos:=0;
  start_pos:=1;
  SetLength(SubPatterns,0);
  SetLength(Matches,0);
  NotAFullMatch:=false;
  
  if SKIP_EXTENTION then
    FileNameProcessedPart:=WideStripExtension(FileName)
  else 
    FileNameProcessedPart:=FileName;

  Matches:=MatchesRegEx(FileNameProcessedPart, Regex, CASE_SENSITIVE);
  if Length(Matches) <= 0 then exit;
  if Matches[0] <> FileNameProcessedPart then NotAFullMatch:=true;
  SubPatterns:=SubMatchesRegEx(Matches[0],Regex,CASE_SENSITIVE);
  if Length(SubPatterns) <=0 then exit;
  
  for i:=0 to Length(SubPatterns)-1 do
    if SubPatterns[i]<>'' then
    begin
      end_pos:=WidePos(SubPatterns[i], Matches[0])-1;
      TempFileName:=TempFileName+WideCopy(Matches[0], start_pos, end_pos-start_pos+1);
      start_pos:=end_pos+Length(SubPatterns[i])+1;
      
      if i < length(CaseFlags)  then
        CaseFlag:=CaseFlags[i]
      else 
        CaseFlag:=CaseFlags[Length(CaseFlags) -1];
        
      case CaseFlag of
        0 : TempFilename:=TempFileName+SubPatterns[i];
        1 : TempFilename:=TempFileName+WideCaseCapitalize(SubPatterns[i]);   
        2 : TempFilename:=TempFileName+WideLowerCase(SubPatterns[i]);
        3 : TempFilename:=TempFileName+WideUpperCase(SubPatterns[i]);
        4 : TempFilename:=TempFileName+WideCaseInvert(SubPatterns[i]);
        5 : TempFilename:=TempFileName+WideUpperCase(SubPatterns[i][1])+WideLowerCase(WideCopy(SubPatterns[i], 2, Length(SubPatterns[i])-1));
          
        else
          begin  
            ShowMessage('The value of ChangeCase parameter is invalid.' +#10+'ChangeCase string cannot contain '+inttostr(CaseFlag)+ '.'+#10+'Check legend for info.' +#10 +#10 +'Script will be terminated.');
            TimeToExit:=True;
            break;
          end;
     end;

   end;
  
  
  if start_pos < Length(FileNameProcessedPart) then
    TempFilename:=TempFileName+WideCopy(FileNameProcessedPart, start_pos, Length(FileNameProcessedPart)-start_pos+1);
 

  if NotAFullMatch then
    if CheckIfFullMatch then    
       begin
         if not WideInputQuery('RegEx didn''t match the full filename.', 'Old filename:'+#10+FileName+#10+#10+'Proposed new filename: '+#10+TempFileName+WideExtractFileExt(FileName)+#10+#10+'What should we do?'#10+#10+'Pressing OK button = Rename that file'+#10+'Pressing Cancek button = Skip that file'+#10+'Type '''+BREAK_STRING+''' in the text field to exit the script or '''+FOR_ALL_STRING+''' if you want to continue with all the files.'+#10, Answer) then
           exit
         else if WideSameText(WideLowerCase(Answer),BREAK_STRING) then 
           begin
             TimeToExit:=True;
             exit;
           end
         else if WideSameText(WideLowerCase(Answer),FOR_ALL_STRING) then 
           begin
             CheckIfFullMatch:=False;
           end
         else
           Answer:=STANDARD_ANSWER;
       end;
   

  if SKIP_EXTENTION then   
    FileName:=TempFileName+WideExtractFileExt(FileName)
  else FileName:=TempFileName;
  

end
else exit;
 
end.