Solved

problem with fgetc and getc and file reading

Posted on 1997-07-15
2
902 Views
Last Modified: 2008-03-17
I open a file with fopen, and fgetc and getc won't read the value of 0x0d from the file. It acts like it's not even there and moves on to the next value instead. For example, if there is the newline values( 0x0d, 0x0a) in the file, and I try to read the 0x0d, it will read the 0x0a instead of it.
0
Comment
Question by:mosfet
2 Comments
 
LVL 1

Accepted Solution

by:
8051 earned 200 total points
ID: 1165112
//Functions getc and fgetc are text-oriented.
//The best (and fastest) solution to open file as binary,
//use buffered reading (function fread) and handle this
//buffer as you want.

//Example following:

int format_to_one_line(char * input_name, char * output_name)
{
    if ((fin=fopen(input_name,"rb"))==NULL) return 2;
    if ((fout=fopen(output_name, "wb+"))==NULL) return 3;
    //------------------------------
    while (!feof(fin))
    {
        blocksize = fread(bufin,1,BUFSIZE,fin);
        j=0;
        if (blocksize)
        {
           for (i=0;i<blocksize;i++)
           {
               if (bufin[i]==0x0D)
               {
                  //delete CR/LF or LF/CR
                  if (bufin[i+2]!=' ' &&
                      bufin[i+2]!=0x0D &&
                      i<(blocksize-2) &&
                      bufin[i+2]!=0x09 && //TAB
                      !isdigit(bufin[i+2]))
                      {
                         i+=2; //Skip it
                         bufout[j++]=' ';
                      }

               }
               bufout[j++]=bufin[i];
           }
           if (fwrite(bufout,1,j,fout)<j) return 3;
        }
    }
    //------------------------------
    fclose(fin);
    fclose(fout);
    return 0;
}

0
 
LVL 1

Author Comment

by:mosfet
ID: 1165113
I appreciate your response.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

When writing generic code, using template meta-programming techniques, it is sometimes useful to know if a type is convertible to another type. A good example of when this might be is if you are writing diagnostic instrumentation for code to generat…
IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

828 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