Small optimization of sending big blocks.

Updated Italian error messages


sql/net_serv.cc:
  Small optimization of sending big blocks.
  Some small formating changes
sql/share/italian/errmsg.txt:
  Updated error messages (by Cristian Giussani)

sql/net_serv.cc

@@ -285,6 +285,7 @@ net_write_command(NET *net,uchar command,const char *packet,ulong len)
 /*
   Caching the data in a local buffer before sending it.
   One can force the buffer to be flushed with 'net_flush'.
+
 */
 
 static int
@@ -292,15 +293,24 @@ net_write_buff(NET *net,const char *packet,ulong len)
 {
   ulong left_length=(ulong) (net->buff_end - net->write_pos);
 
-  while (len > left_length)
+  if (len > left_length)
   {
     memcpy((char*) net->write_pos,packet,left_length);
     if (net_real_write(net,(char*) net->buff,net->max_packet))
       return 1;
     net->write_pos=net->buff;
     packet+=left_length;
-    len-=left_length;
-    left_length=net->max_packet;
+    len-= left_length;
+    left_length= net->max_packet;
+
+    /* Send out rest of the blocks as full sized blocks */
+    while (len > left_length)
+    {
+      if (net_real_write(net, packet, left_length))
+	return 1;
+      packet+= left_length;
+      len-= left_length;
+    }
   }
   memcpy((char*) net->write_pos,packet,len);
   net->write_pos+=len;
@@ -633,7 +643,10 @@ my_real_read(NET *net, ulong *complen)
 #ifdef HAVE_COMPRESS
 	if (net->compress)
 	{
-	  /* complen is > 0 if package is really compressed */
+	  /*
+	    If the packet is compressed then complen > 0 and contains the
+	    number of bytes in the uncompressed packet
+	  */
 	  *complen=uint3korr(&(net->buff[net->where_b + NET_HEADER_SIZE]));
 	}
 #endif
@@ -704,7 +717,7 @@ my_net_read(NET *net)
       {
 	net->where_b += len;
 	total_length += len;
-	len = my_real_read (net,&complen);
+	len = my_real_read(net,&complen);
       } while (len == MAX_THREE_BYTES);
       if (len != packet_error)
 	len+= total_length;
@@ -732,7 +745,7 @@ my_net_read(NET *net)
     }
     else
     {
-      /* reuse buffer, as there is noting in it that we need */
+      /* reuse buffer, as there is nothing in it that we need */
       buf_length=start_of_packet=first_packet_offset=0;
     }
     for (;;)

sql/share/italian/errmsg.txt

@@ -219,22 +219,22 @@
 "Impossibile aggiungere il vincolo di integrita' referenziale (foreign key constraint)",
 "Impossibile aggiungere la riga: un vincolo d'integrita' referenziale non e' soddisfatto",
 "Impossibile cancellare la riga: un vincolo d'integrita' referenziale non e' soddisfatto",
-"Error connecting to master: %-.128s",
-"Error running query on master: %-.128s",
-"Error when executing command %s: %-.128s",
-"Wrong usage of %s and %s",
-"The used SELECT statements have a different number of columns",
-"Can't execute the query because you have a conflicting read lock",
-"Mixing of transactional and non-transactional tables is disabled",
-"Option '%s' used twice in statement",
-"User '%-.64s' has exceeded the '%s' resource (current value: %ld)",
-"Access denied. You need the %-.128s privilege for this operation",
-"Variable '%-.64s' is a LOCAL variable and can't be used with SET GLOBAL",
-"Variable '%-.64s' is a GLOBAL variable and should be set with SET GLOBAL",
-"Variable '%-.64s' doesn't have a default value",
-"Variable '%-.64s' can't be set to the value of '%-.64s'",
-"Wrong argument type to variable '%-.64s'",
-"Variable '%-.64s' can only be set, not read",
-"Wrong usage/placement of '%s'",
-"This version of MySQL doesn't yet support '%s'",
-"Got fatal error %d: '%-.128s' from master when reading data from binary log",
+"Errore durante la connessione al master: %-.128s",
+"Errore eseguendo una query sul master: %-.128s",
+"Errore durante l'esecuzione del comando %s: %-.128s",
+"Uso errato di %s e %s",
+"La SELECT utilizzata ha un numero di colonne differente",
+"Impossibile eseguire la query perche' c'e' un conflitto con in lock di lettura",
+"E' disabilitata la possibilita' di mischiare tabelle transazionali e non-transazionali",
+"L'opzione '%s' e' stata usata due volte nel comando",
+"L'utente '%-.64s' ha ecceduto la risorsa '%s' (valore corrente: %ld)",
+"Accesso non consentito. Serve il privilegio %-.128s per questa operazione",
+"La variabile '%-.64s' e' una variabile locale ( LOCAL ) e non puo' essere cambiata usando SET GLOBAL",
+"La variabile '%-.64s' e' una variabile globale ( GLOBAL ) e deve essere cambiata usando SET GLOBAL",
+"La variabile '%-.64s' non ha un valore di default",
+"Alla variabile '%-.64s' non puo' essere assegato il valore '%-.64s'",
+"Tipo di valore errato per la variabile '%-.64s'",
+"Alla variabile '%-.64s' e' di sola scrittura quindi puo' essere solo assegnato un valore, non letto",
+"Uso/posizione di '%s' sbagliato",
+"Questa versione di MySQL non supporta ancora '%s'",
+"Errore fatale %d: '%-.128s' dal master leggendo i dati dal log binario",