Function cf_ReadBytes

cfile/cfile.cpp:654–670

Reads the specified number of bytes from a file into the buffer DO NOT USE THIS TO READ STRUCTURES. This function is for byte data, such as a string or a bitmap of 8-bit pixels. Returns the number of bytes read. Throws an exception of type (cfile_error *) if the OS returns an error on read

// Returns the number of bytes read.
// Throws an exception of type (cfile_error *) if the OS returns an error on read
int cf_ReadBytes(uint8_t *buf, int count, CFILE *cfp) {
  int i;
  const char *error_msg = eof_error; // default error
  ASSERT(!(cfp->flags & CFF_TEXT));
  if (cfp->position + count <= cfp->size) {
    i = fread(buf, 1, count, cfp->file);
    if (i == count) {
      cfp->position += i;
      return i;
    }
    // if not EOF, then get the error message
    if (!feof(cfp->file))
      error_msg = strerror(errno);
  }
  mprintf(1, "Error reading %d bytes from position %d of file <%s>; errno=%d.", count, cfp->position, cfp->name, errno);
  return 0;
}
// The following functions read numeric vales from a CFILE.  All values are
// stored in the file in Intel (little-endian) format.  These functions
// will convert to big-endian if required.