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/* Copyright (C) 2000-2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <my_global.h>
#include <mysql_com.h>
#include <mysql.h>
/* Get the length of next field. Change parameter to point at fieldstart */
ulong STDCALL net_field_length(uchar **packet)
{
reg1 uchar *pos= (uchar *)*packet;
if (*pos < 251)
{
(*packet)++;
return (ulong) *pos;
}
if (*pos == 251)
{
(*packet)++;
return NULL_LENGTH;
}
if (*pos == 252)
{
(*packet)+=3;
return (ulong) uint2korr(pos+1);
}
if (*pos == 253)
{
(*packet)+=4;
return (ulong) uint3korr(pos+1);
}
(*packet)+=9; /* Must be 254 when here */
return (ulong) uint4korr(pos+1);
}
/* The same as above but returns longlong */
my_ulonglong net_field_length_ll(uchar **packet)
{
reg1 uchar *pos= *packet;
if (*pos < 251)
{
(*packet)++;
return (my_ulonglong) *pos;
}
if (*pos == 251)
{
(*packet)++;
return (my_ulonglong) NULL_LENGTH;
}
if (*pos == 252)
{
(*packet)+=3;
return (my_ulonglong) uint2korr(pos+1);
}
if (*pos == 253)
{
(*packet)+=4;
return (my_ulonglong) uint3korr(pos+1);
}
(*packet)+=9; /* Must be 254 when here */
#ifdef NO_CLIENT_LONGLONG
return (my_ulonglong) uint4korr(pos+1);
#else
return (my_ulonglong) uint8korr(pos+1);
#endif
}
char *
net_store_length(char *pkg, ulonglong length)
{
uchar *packet=(uchar*) pkg;
if (length < LL(251))
{
*packet=(uchar) length;
return (char*) packet+1;
}
/* 251 is reserved for NULL */
if (length < LL(65536))
{
*packet++=252;
int2store(packet,(uint) length);
return (char*) packet+2;
}
if (length < LL(16777216))
{
*packet++=253;
int3store(packet,(ulong) length);
return (char*) packet+3;
}
*packet++=254;
int8store(packet,length);
return (char*) packet+8;
}
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