database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-06-12 01:53:02 +03:00
Code Activity

Merge with 4.0

Browse Source 
BitKeeper/etc/logging_ok:
  auto-union
Docs/Support/texi2html:
  Auto merged
innobase/trx/trx0rec.c:
  Auto merged
libmysql/libmysql.c:
  Auto merged
myisam/myisampack.c:
  Auto merged
mysql-test/t/innodb-lock.test:
  Auto merged
mysys/thr_lock.c:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/lock.cc:
  Auto merged
sql/sql_acl.cc:
  Keep old code
This commit is contained in:
unknown
2004-10-20 16:24:28 +03:00
parent 7bdb93aa7e ec8779e95a
commit 560d7bcdd0
17 changed files with 254 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
libmysql/libmysql.c
View File

@ -1543,6 +1543,40 @@ void my_net_local_init(NET *net)
net->max_packet_size= max(net_buffer_length, max_allowed_packet);
}
/*
This function is used to create HEX string that you
can use in a SQL statement in of the either ways:
INSERT INTO blob_column VALUES (0xAABBCC); (any MySQL version)
INSERT INTO blob_column VALUES (X'AABBCC'); (4.1 and higher)
The string in "from" is encoded to a HEX string.
The result is placed in "to" and a terminating null byte is appended.
The string pointed to by "from" must be "length" bytes long.
You must allocate the "to" buffer to be at least length*2+1 bytes long.
Each character needs two bytes, and you need room for the terminating
null byte. When mysql_hex_string() returns, the contents of "to" will
be a null-terminated string. The return value is the length of the
encoded string, not including the terminating null character.
The return value does not contain any leading 0x or a leading X' and
trailing '. The caller must supply whichever of those is desired.
*/
ulong mysql_hex_string(char *to, const char *from, ulong length)
{
char *to0= to;
const char *end;
for (end= from + length; from < end; from++)
{
*to++= _dig_vec[((unsigned char) *from) >> 4];
*to++= _dig_vec[((unsigned char) *from) & 0x0F];
}
*to= '\0';
return (ulong) (to-to0);
}
/*
Add escape characters to a string (blob?) to make it suitable for a insert
to should at least have place for length*2+1 chars