SCRUM

Protocol_cursor class and sql-common/ directory

1 files changed, 64 insertions, 0 deletions

diff --git a/sql-common/pack.c b/sql-common/pack.c
new file mode 100644
index 00000000000..e363d600e20
--- /dev/null
+++ b/sql-common/pack.c
@@ -0,0 +1,64 @@
+#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
+}
+