Fossil

  ** Clean up the mid and pid VFILE entries.  Then commit the changes.
  */
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", tid);
  manifest_to_disk(tid);
  db_lset_int("checkout", tid);
  db_end_transaction(0);
}

/*
** COMMAND: revert
**
** Usage: %fossil revert ?-yes FILE
**
** Revert to the current repository version of FILE. This
** command will confirm your operation, unless you do so
** at the command line via the -yes option.
**/
void revert_cmd(void){
  const char *zFile;
  Blob fname;
  Blob record;
  Blob ans;
  int rid, yesRevert;
  
  yesRevert = find_option("yes","y", 0)!=0;
  verify_all_options();
  
  if( g.argc<3 ){
    usage("?OPTIONS FILE");
  }
  db_must_be_within_tree();
  
  zFile = g.argv[g.argc-1];
  if( !file_tree_name(zFile, &fname) ){
    fossil_panic("unknown file: %s", zFile);
  }
  rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B", &fname);

  if( rid==0 ){
    fossil_panic("no history for file: %b", &fname);
  }

  if( yesRevert==0 ){
    char *prompt = mprintf("revert file %B? this will destroy local changes [y/N]? ",
                           &fname);
    blob_zero(&ans);
    prompt_user(prompt, &ans);
    if( blob_str(&ans)[0]=='y' ){
      yesRevert = 1;
    }
  }
  if( yesRevert==1 ){
    content_get(rid, &record);
    blob_write_to_file(&record, blob_str(&fname));
    printf("%s reverted\n", blob_str(&fname));
    blob_reset(&record);
    blob_reset(&fname);
  }else{
    printf("revert canceled\n");
  }
}