1 files changed, 119 insertions, 0 deletions
diff --git a/externals/mysql/libmysql/pack.c b/externals/mysql/libmysql/pack.c
new file mode 100644
index 00000000000..02b117fde9c
--- /dev/null
+++ b/externals/mysql/libmysql/pack.c
@@ -0,0 +1,119 @@
+/* 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; version 2 of the License.
+
+   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
+}
+
+/*
+  Store an integer with simple packing into a output package
+
+  SYNOPSIS
+    net_store_length()
+    pkg			Store the packed integer here
+    length		integers to store
+
+  NOTES
+    This is mostly used to store lengths of strings.
+
+  RETURN
+   Position in 'pkg' after the packed length
+*/
+
+uchar *net_store_length(uchar *packet, ulonglong length)
+{
+  if (length < 251ULL)
+  {
+    *packet=(uchar) length;
+    return packet+1;
+  }
+  /* 251 is reserved for NULL */
+  if (length < 65536ULL)
+  {
+    *packet++=252;
+    int2store(packet,(uint) length);
+    return packet+2;
+  }
+  if (length < 16777216ULL)
+  {
+    *packet++=253;
+    int3store(packet,(ulong) length);
+    return packet+3;
+  }
+  *packet++=254;
+  int8store(packet,length);
+  return packet+8;
+}
+