/*
** Initialize a blob to be the content of a file.  If the filename
** is blank or "-" then read from standard input.
**
** Any prior content of the blob is discarded, not freed.
**
** Return the number of bytes read. Calls fossil_fatal() error (i.e.
** Return the number of bytes read. Calls fossil_fatal() on error (i.e.
** it exit()s and does not return).
*/
int blob_read_from_file(Blob *pBlob, const char *zFilename){
  int size, got;
  FILE *in;
  if( zFilename==0 || zFilename[0]==0
        || (zFilename[0]=='-' && zFilename[1]==0) ){