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Reading a text file

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  • A Andrew Admire

    Is there a way to create a program that would read a text file and every time it found a space it would replace the space with a line return?

    D Offline
    D Offline
    David Crow
    wrote on last edited by
    #2

    Sure! Are you using MFC?


    "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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    • A Andrew Admire

      Is there a way to create a program that would read a text file and every time it found a space it would replace the space with a line return?

      M Offline
      M Offline
      Martial Spirit
      wrote on last edited by
      #3

      sure, It isn't a difficult thing:-) read the text to buffer, and chr the space char ' ', then replace it with '\r', OK, output it to file or screen. Best Regards

      A 1 Reply Last reply
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      • M Martial Spirit

        sure, It isn't a difficult thing:-) read the text to buffer, and chr the space char ' ', then replace it with '\r', OK, output it to file or screen. Best Regards

        A Offline
        A Offline
        Andrew Admire
        wrote on last edited by
        #4

        Is it still possible with the console app? I would like to output it to a new file.

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        • A Andrew Admire

          Is it still possible with the console app? I would like to output it to a new file.

          D Offline
          D Offline
          David Crow
          wrote on last edited by
          #5

          Andrew Admire wrote: Is it still possible with the console app? Of course. Andrew Admire wrote: I would like to output it to a new file. Not a problem. Is this an MFC-based application?


          "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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          • D David Crow

            Andrew Admire wrote: Is it still possible with the console app? Of course. Andrew Admire wrote: I would like to output it to a new file. Not a problem. Is this an MFC-based application?


            "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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            A Offline
            Andrew Admire
            wrote on last edited by
            #6

            I do not know how to use MFC so no, I would like it to be straight console app based.

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            • A Andrew Admire

              I do not know how to use MFC so no, I would like it to be straight console app based.

              D Offline
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              David Crow
              wrote on last edited by
              #7

              Andrew Admire wrote: ...I would like it to be straight console app based. MFC can be used in both GUI and console applications.


              "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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              • D David Crow

                Andrew Admire wrote: ...I would like it to be straight console app based. MFC can be used in both GUI and console applications.


                "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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                Andrew Admire
                wrote on last edited by
                #8

                Ok, then no I would like to use C++.

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                • A Andrew Admire

                  Ok, then no I would like to use C++.

                  D Offline
                  D Offline
                  David Crow
                  wrote on last edited by
                  #9

                  This should get you close. You can make the necessary changes and organize it a bit better.

                  FILE *pFile = fopen("C:\\!conMania Collection\\list71.txt", "rb");
                  if (NULL != pFile)
                  {
                  // how big is the file?
                  fseek(pFile, 0, SEEK_END);
                  long lSize = ftell(pFile);
                  fseek(pFile, 0, SEEK_SET);

                  // allocate a buffer for it
                  char \*pBuffer = new char\[lSize\];
                   
                  // read the entire file
                  // much more efficient than reading one byte at a time
                  fread(pBuffer, sizeof(char), lSize, pFile);
                  fclose(pFile);
                   
                  // change the spaces to linefeeds
                  for (int x = 0; x < lSize; x++)
                  {
                      if (pBuffer\[x\] == ' ')
                          pBuffer\[x\] = '\\n';
                  }
                   
                  // create a new file
                  pFile = fopen("C:\\\\!conMania Collection\\\\list71\_temp.txt", "wb");
                  if (NULL != pFile)
                  {
                      fwrite(pBuffer, sizeof(char), lSize, pFile);
                      fclose(pFile);
                  }
                   
                  delete \[\] pBuffer;
                  

                  }


                  "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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                  • A Andrew Admire

                    Is there a way to create a program that would read a text file and every time it found a space it would replace the space with a line return?

                    C Offline
                    C Offline
                    cgb143
                    wrote on last edited by
                    #10

                    this needs a lot of polish, but it does the bare essentials. in_filename and out_filename could be selected using CFileDialog. they are hard coded here. #include windows.h #include string.h #include stdio.h main() { FILE *infile_p; // pointer for read file FILE *outfile_p; // pointer for write file int byte;// var for byte read from file if ((infile_p = fopen("in_filename", "r"))==NULL) // open file for read { exit(0); } if ((outfile_p = fopen("out_filename", "w"))==NULL) // open file for write { exit(0); } while (!feof(infile_p)) // end of file test { byte = (fgetc(infile_p)); if (byte == 32) // look for a space { fprintf(outfile_p ,"%c%c", 0x0d, 0x0a);/ replace it with CR/LF } else { fprintf( outfile_p, "%c", byte); } } return(0); }

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                    • D David Crow

                      This should get you close. You can make the necessary changes and organize it a bit better.

                      FILE *pFile = fopen("C:\\!conMania Collection\\list71.txt", "rb");
                      if (NULL != pFile)
                      {
                      // how big is the file?
                      fseek(pFile, 0, SEEK_END);
                      long lSize = ftell(pFile);
                      fseek(pFile, 0, SEEK_SET);

                      // allocate a buffer for it
                      char \*pBuffer = new char\[lSize\];
                       
                      // read the entire file
                      // much more efficient than reading one byte at a time
                      fread(pBuffer, sizeof(char), lSize, pFile);
                      fclose(pFile);
                       
                      // change the spaces to linefeeds
                      for (int x = 0; x < lSize; x++)
                      {
                          if (pBuffer\[x\] == ' ')
                              pBuffer\[x\] = '\\n';
                      }
                       
                      // create a new file
                      pFile = fopen("C:\\\\!conMania Collection\\\\list71\_temp.txt", "wb");
                      if (NULL != pFile)
                      {
                          fwrite(pBuffer, sizeof(char), lSize, pFile);
                          fclose(pFile);
                      }
                       
                      delete \[\] pBuffer;
                      

                      }


                      "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

                      A Offline
                      A Offline
                      Anonymous
                      wrote on last edited by
                      #11

                      Don't you need replace with a \r\n ?

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                      • A Anonymous

                        Don't you need replace with a \r\n ?

                        D Offline
                        D Offline
                        David Crow
                        wrote on last edited by
                        #12

                        I don't know. It's not my project. Given that \r is a carriage return and \n is a line feed, I'm not sure what a "line return" is.


                        "Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

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                        • A Andrew Admire

                          Is there a way to create a program that would read a text file and every time it found a space it would replace the space with a line return?

                          B Offline
                          B Offline
                          beerboy_22
                          wrote on last edited by
                          #13

                          Here's a C++ solution: #include #include using namespace std; ... ifstream in("in.txt"); ofstream out("out.txt"); string s; while(is >> s) os << s << endl;

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                          • C cgb143

                            this needs a lot of polish, but it does the bare essentials. in_filename and out_filename could be selected using CFileDialog. they are hard coded here. #include windows.h #include string.h #include stdio.h main() { FILE *infile_p; // pointer for read file FILE *outfile_p; // pointer for write file int byte;// var for byte read from file if ((infile_p = fopen("in_filename", "r"))==NULL) // open file for read { exit(0); } if ((outfile_p = fopen("out_filename", "w"))==NULL) // open file for write { exit(0); } while (!feof(infile_p)) // end of file test { byte = (fgetc(infile_p)); if (byte == 32) // look for a space { fprintf(outfile_p ,"%c%c", 0x0d, 0x0a);/ replace it with CR/LF } else { fprintf( outfile_p, "%c", byte); } } return(0); }

                            A Offline
                            A Offline
                            Anonymous
                            wrote on last edited by
                            #14

                            Your program worked. However it kept the space after the . at the end of the sentence.

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