Strange question: I have a text file, there are many records in it, I want to replace a garbled with a blank code.

windsoupl

I want to use TStringList * txtList = new tstringlist;
STRING SS;
   
      Tstringlist * txtlist = new tstringlist;
   
      TXTLIST-> LoadFormfile ("C:\1uO1Mytxt.txt");
      For (int i = 0; i <txtlist-> count; i ++)
            {
                   SS = txtList-> strings [i];
                   IF (SS.POS ("string")> 0)
                   SS = STRINGREPLACE (SS, "string", "", -----------);
                   TXTLIST-> STRINGS [I] = SS;
          }
      TXTLIST-> Savetofile ("C:\1uO1mytxt.txt");
   
      Delete txtList;
The question now is:
Mainly in this way, only part of the data is only in the first line.

I don't know what else can I realize?

Read with C, but how to replace it?

Many thanks!

apple_058

Changed, good.
Any "string" changes into spaces to store new name mytxt1.txt

Void __fastcall tform1 :: button1click (Tobject * Sender)
{
  STRING SS;
  Tstringlist * txtlist = new tstringlist;
  TXTLIST-> LoadFromfile ("mytxt.txt");
  For (int i = 0; i <txtlist-> count; i ++)
  {
    SS = txtList-> strings [i];
    Treplaceflags flags;
    Flags << RFREPLACEALL;
    IF (SS.POS ("string")> 0) SS = StringReplace (SS, "string", "" ", flags);
    TXTLIST-> STRINGS [I] = SS;
  }
  TXTLIST-> Savetofile ("Mytxt1.txt");
  Delete txtList;
}

ufoprc

TstringList's LoadFromFile generally only handles text, if there is a text end of the text (0x1a) or string end value (0x00) in your file, it has a problem.
C / C ++ file processing capability is very, the simplest, with the C standard function to achieve your requirements
1. Use rename to rename mytxt.txt, such as Mytxt.bak
2. Open file mytxt.bak with fopen, and create a new file mytxt.txt
3. Read the file mytxt.bak by getC, and determine if it is a mess, if yes, change to space to write mytxt.txt, otherwise write file mytxt.txt
4. Repeat 3 until myTXT.BAK file end
5. If necessary, delete the file mytxt.bak

windsoupl

Is the above problem, getc is a character, I am now two characters, forming a garbled Chinese character.

Use the code of C to an example?

windsoupl

This Chinese character is transferred to the capital 16. is: 9D7C

ufoprc

File * fp = fopen ("D:\\Temp\\t.txt", "RB");
   File * fp1 = fopen ("D:\\Temp\\t1.txt", "WB");
   INT C, C1;
   While ((c = fgetc (fp))! = EOF)
      IF (c! = 0x9d)
         FPUTC (C, FP1);
         Else
         {
             C1 = FGETC (FP);
             IF (C1! = 0x7c)
               FPUTC (C, FP1);
             Else
             {
               FPUTC ('', fp1); // instead of 0x9D7C in two spaces
               FPUTC ('', fp1);
             }
         }
   Fclose (fp);
   Fclose (fp1);
}

ufoprc

Just finished, I found a small bug,
             IF (C1! = 0x7c)
               FPUTC (C1, FP1); // should be C1 here

windsoupl

Thank you!

I feel there is still a problem.

If the previous character is the second half byte is 0x9d, the latter character is 0x7c, so that, then it is replaced.

ufoprc

This is annoying. If your file is unicode or a pure Chinese character (double byte), it is also good to process (change FGETWC, read two bytes at a time). Otherwise, this secondary sense is difficult to handle (including Ultra-edit commercial software sometimes has this problem)

一天世界

Go to WideString (Unicode) and then processed. After the processing is completed.

But if you have some special words can't be converted to Unicode, this conversion will lose that word.
100% is correct, we must look forward to the unity of Chinese standards and software.

Do you want you twice, Unicode mode once, C mode once. In contrast, smart selection one, do not have wrong efforts.