diff options
Diffstat (limited to 'include/my_handler.h')
| -rw-r--r-- | include/my_handler.h | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/include/my_handler.h b/include/my_handler.h index 8b3cc1a1ee0..61665090853 100644 --- a/include/my_handler.h +++ b/include/my_handler.h @@ -18,22 +18,23 @@ #ifndef _my_handler_h #define _my_handler_h -#include "my_global.h" #include "my_base.h" #include "m_ctype.h" #include "myisampack.h" 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 */ uint8 type; /* Type of key (for sort) */ uint8 language; uint8 null_bit; /* bitmask to test for NULL */ uint8 bit_start,bit_end; /* if bit field */ - uint16 flag; - uint16 length; /* Keylength */ - uint32 start; /* Start of key in record */ - uint32 null_pos; /* position to NULL indicator */ - CHARSET_INFO *charset; + uint8 bit_length; /* Length of bit part */ } HA_KEYSEG; #define get_key_length(length,key) \ @@ -57,6 +58,29 @@ typedef struct st_HA_KEYSEG /* Key-portion */ { 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 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 mi_compare_text(CHARSET_INFO *, uchar *, uint, uchar *, uint , my_bool, my_bool); extern int ha_key_cmp(register HA_KEYSEG *keyseg, register uchar *a, |