Fossil

}

/*
** Insert a tag into the database.
*/
void tag_insert(
  const char *zTag,        /* Name of the tag (w/o the "+" or "-" prefix */
  int tagtype,             /* 0:cancel  1:singleton  2:propagated -1:erase */
  const char *zValue,      /* Value if the tag is really a property */
  int srcId,               /* Artifact that contains this tag */
  double mtime,            /* Timestamp.  Use default if <=0.0 */
  int rid                  /* Artifact to which the tag is to attached */
){
  Stmt s;
  const char *zCol;

    "   AND mtime>=:mtime",
    tagid, rid
  );
  db_bind_double(&s, ":mtime", mtime);
  rc = db_step(&s);
  db_finalize(&s);
  if( rc==SQLITE_ROW ){
    /* Another entry that is more recent already exists.  Do nothing */
    return;
  }
  if( tagtype<0 ){
    return;
    /* TBD: erase tags */
  }
  db_prepare(&s, 
    "REPLACE INTO tagxref(tagid,tagtype,srcId,value,mtime,rid)"
    " VALUES(%d,%d,%d,%Q,:mtime,%d)",
    tagid, tagtype, srcId, zValue, rid
  );
  db_bind_double(&s, ":mtime", mtime);