kolibrios/programs/develop/ktcc/trunk/libc/stdio/fgetc.c

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#include <stdio.h>
int fgetc(FILE* file)
{
dword res;
if(!file)
{
errno = E_INVALIDPTR;
return EOF;
}
if ((file->mode & 3)!=FILE_OPEN_READ && (file->mode & FILE_OPEN_PLUS)==0) return EOF;
if (file->filepos>=file->filesize)
{
return EOF;
}
else
{
res=_ksys_readfile(file->filename,file->filepos,1,file->buffer);
if (res==0)
{
file->filepos++;
return (int)file->buffer[0];
}
else
{
errno = -res;
return EOF; // errors are < 0
}
}
}