latest sources commit

2023-11-07 05:04:30 -05:00
commit 749adf47ca
7570 changed files with 5705168 additions and 0 deletions
--- a/deps/mysqllite/include/internal/my_handler.h
+++ b/deps/mysqllite/include/internal/my_handler.h
@@ -0,0 +1,130 @@
+/* Copyright (C) 2002-2006 MySQL AB
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA */
+
+#ifndef _my_handler_h
+#define _my_handler_h
+
+#include "myisampack.h"
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#include "m_ctype.h"                            /* CHARSET_INFO */
+
+/*
+  There is a hard limit for the maximum number of keys as there are only
+  8 bits in the index file header for the number of keys in a table.
+  This means that 0..255 keys can exist for a table. The idea of
+  HA_MAX_POSSIBLE_KEY is to ensure that one can use myisamchk & tools on
+  a MyISAM table for which one has more keys than MyISAM is normally
+  compiled for. If you don't have this, you will get a core dump when
+  running myisamchk compiled for 128 keys on a table with 255 keys.
+*/
+
+#define HA_MAX_POSSIBLE_KEY         255         /* For myisamchk */
+/*
+  The following defines can be increased if necessary.
+  But beware the dependency of MI_MAX_POSSIBLE_KEY_BUFF and HA_MAX_KEY_LENGTH.
+*/
+
+#define HA_MAX_KEY_LENGTH           1000        /* Max length in bytes */
+#define HA_MAX_KEY_SEG              16          /* Max segments for key */
+
+#define HA_MAX_POSSIBLE_KEY_BUFF    (HA_MAX_KEY_LENGTH + 24+ 6+6)
+#define HA_MAX_KEY_BUFF  (HA_MAX_KEY_LENGTH+HA_MAX_KEY_SEG*6+8+8)
+
+typedef struct st_HA_KEYSEG		/* Key-portion */
+{
+  CHARSET_INFO *charset;
+  uint32 start;				/* Start of key in record */
+  uint32 null_pos;			/* position to NULL indicator */
+  uint16 bit_pos;                       /* Position to bit part */
+  uint16 flag;
+  uint16 length;			/* Keylength */
+  uint16 language;
+  uint8  type;				/* Type of key (for sort) */
+  uint8  null_bit;			/* bitmask to test for NULL */
+  uint8  bit_start,bit_end;		/* if bit field */
+  uint8  bit_length;                    /* Length of bit part */
+} HA_KEYSEG;
+
+#define get_key_length(length,key) \
+{ if (*(uchar*) (key) != 255) \
+    length= (uint) *(uchar*) ((key)++); \
+  else \
+  { length= mi_uint2korr((key)+1); (key)+=3; } \
+}
+
+#define get_key_length_rdonly(length,key) \
+{ if (*(uchar*) (key) != 255) \
+    length= ((uint) *(uchar*) ((key))); \
+  else \
+  { length= mi_uint2korr((key)+1); } \
+}
+
+#define get_key_pack_length(length,length_pack,key) \
+{ if (*(uchar*) (key) != 255) \
+  { length= (uint) *(uchar*) ((key)++); length_pack= 1; }\
+  else \
+  { length=mi_uint2korr((key)+1); (key)+= 3; length_pack= 3; } \
+}
+
+#define store_key_length_inc(key,length) \
+{ if ((length) < 255) \
+  { *(key)++= (length); } \
+  else \
+  { *(key)=255; mi_int2store((key)+1,(length)); (key)+=3; } \
+}
+
+#define size_to_store_key_length(length) ((length) < 255 ? 1 : 3)
+
+#define get_rec_bits(bit_ptr, bit_ofs, bit_len) \
+  (((((uint16) (bit_ptr)[1] << 8) | (uint16) (bit_ptr)[0]) >> (bit_ofs)) & \
+   ((1 << (bit_len)) - 1))
+
+#define set_rec_bits(bits, bit_ptr, bit_ofs, bit_len) \
+{ \
+  (bit_ptr)[0]= ((bit_ptr)[0] & ~(((1 << (bit_len)) - 1) << (bit_ofs))) | \
+                ((bits) << (bit_ofs)); \
+  if ((bit_ofs) + (bit_len) > 8) \
+    (bit_ptr)[1]= ((bit_ptr)[1] & ~((1 << ((bit_len) - 8 + (bit_ofs))) - 1)) | \
+                  ((bits) >> (8 - (bit_ofs))); \
+}
+
+#define clr_rec_bits(bit_ptr, bit_ofs, bit_len) \
+  set_rec_bits(0, bit_ptr, bit_ofs, bit_len)
+
+extern int ha_compare_text(CHARSET_INFO *, uchar *, uint, uchar *, uint ,
+			   my_bool, my_bool);
+extern int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a,
+		      register uchar *b, uint key_length, uint nextflag,
+		      uint *diff_pos);
+
+extern HA_KEYSEG *ha_find_null(HA_KEYSEG *keyseg, uchar *a);
+extern void my_handler_error_register(void);
+extern void my_handler_error_unregister(void);
+/*
+  Inside an in-memory data record, memory pointers to pieces of the
+  record (like BLOBs) are stored in their native byte order and in
+  this amount of bytes.
+*/
+#define portable_sizeof_char_ptr 8
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _my_handler_h */