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05.06.2003 at 08:31AM PDT, ID: 20607302
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5.6

Recieve file from stdin

Asked by MatthewL in C Programming Language

Tags: , ,

Hi,

I have a utility for which I would like to add the ability to redirect a file in.

e.g.  c:\myUtility <aBinFile.tif

I did the following as my first stab. It takes the file in from standard in and writes it to a tmp file.

tmpnam(buff);
strcat(buff,"tif");
if( buff == NULL )
{
  fprintf(stderr,"ERROR: could not create a temporary file");
  exit(1);
}
printf("\nUsing a temp file named %s.\n",buff);
fpBuff = fopen(buff,"wb+");
if( fpBuff != NULL)
{
  // grab from stdin (redirected) and put in temp file
  while( fread(&aByte,sizeof(aByte),1,stdin) )
  {
    fwrite(&aByte,sizeof(aByte),1,fpBuff);
  }
  fcopy(pszSrcFilename,buff);
}

It fails to copy the entire file as it reads in a byte of 1A(base 16) early in the file.

Any suggestions would be appreciated.

Thanks,

Matt
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About this solution

Zone: C Programming Language
Tags: c, file, stdin
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Solution Provided By: GaryFx
Participating Experts: 3
Solution Grade: B
 
 
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