Exemplo n.º 1
0
/*
** Usage:   btree_payload_size ID
**
** Return the number of bytes of payload
*/
static int btree_payload_size(
  void *NotUsed,
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int argc,              /* Number of arguments */
  const char **argv      /* Text of each argument */
){
  BtCursor *pCur;
  int n2;
  u64 n1;
  char zBuf[50];

  if( argc!=2 ){
    Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
       " ID\"", 0);
    return TCL_ERROR;
  }
  pCur = sqlite3TestTextToPtr(argv[1]);
  sqlite3BtreeEnter(pCur->pBtree);

  /* The cursor may be in "require-seek" state. If this is the case, the
  ** call to BtreeDataSize() will fix it. */
  sqlite3BtreeDataSize(pCur, (u32*)&n2);
  if( pCur->apPage[pCur->iPage]->intKey ){
    n1 = 0;
  }else{
    sqlite3BtreeKeySize(pCur, (i64*)&n1);
  }
  sqlite3BtreeLeave(pCur->pBtree);
  sqlite3_snprintf(sizeof(zBuf),zBuf, "%d", (int)(n1+n2));
  Tcl_AppendResult(interp, zBuf, 0);
  return SQLITE_OK;
}
Exemplo n.º 2
0
__declspec(dllexport) int WINAPI sqlite3_cursor_rowid(sqlite3_stmt *pstmt, int cursor, sqlite_int64 *prowid)
{
  Vdbe *p = (Vdbe *)pstmt;
  sqlite3 *db = (p == NULL) ? NULL : p->db;
  int rc = 0;
  VdbeCursor *pC;
  int ret = 0;

  sqlite3_mutex_enter(db->mutex);
  while (1)
  {
    if (cursor < 0 || cursor >= p->nCursor)
    {
      ret = SQLITE_ERROR;
      break;
    }
    if (p->apCsr[cursor] == NULL)
    {
      ret = SQLITE_ERROR;
      break;
    }

    pC = p->apCsr[cursor];

    ret = sqlite3VdbeCursorMoveto(pC);
    if(ret)
      break;

    if(pC->rowidIsValid)
    {
      *prowid = pC->lastRowid;
    }
    else if(pC->pseudoTableReg > 0)
    {
      ret = SQLITE_ERROR;
      break;
    }
    else if(pC->nullRow || pC->pCursor==0)
    {
      ret = SQLITE_ERROR;
      break;
    }
    else
    {
      if (pC->pCursor == NULL)
      {
        ret = SQLITE_ERROR;
        break;
      }
      sqlite3BtreeKeySize(pC->pCursor, prowid);
      *prowid = *prowid;
    }
    break;
  }
  sqlite3_mutex_leave(db->mutex);

  return ret;
}