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mariadb/strings/ctype-win1250ch.c
Alexander Barkov 1748b02ec6 MDEV-36213 Doubled memory usage (11.4.4 <-> 11.4.5) 
Fixing the code adding MySQL _0900_ collations as _uca1400_ aliases
not to perform deep initialization of the corresponding _uca1400_
collations.

Only basic initialization is now performed which allows to watch
these collations (both _0900_ and _uca1400_) in queries to
INFORMATION_SCHEMA tables COLLATIONS and
COLLATION_CHARACTER_SET_APPLICABILITY,
as well as in SHOW COLLATION statements.

Deep initialization is now performed only when a collation
(either the _0900_ alias or the corresponding  _uca1400_ collation)
is used for the very first time after the server startup.

Refactoring was done to maintain the code easier:
- most of the _uca1400_ code was moved from ctype-uca.c
  to a new file ctype-uca1400.c
- most of the _0900_ code was moved from type-uca.c
  to a new file ctype-uca0900.c

Change details:

- The original function add_alias_for_collation() added by the patch for
   "MDEV-20912 Add support for utf8mb4_0900_* collations in MariaDB Server"
  was removed from mysys/charset.c, as it had two two problems:

  a. it forced deep initialization of the _uca1400_ collations
     when adding _0900_ aliases for them at the server startup
     (the main reported problem)

  b. it introduced cyclic dependency between /mysys and /strings
     - /mysys/charset-def.c depended on /strings/ctype-uca.c
     - /strings/ctype-uca.c depended on /mysys/charset.c

  The code from add_alias_for_collation() was split into separate functions.
  Cyclic dependency was removed. `#include <my_sys.h>` was removed
  from /strings/ctype-uca.c. Collations are now added using a callback
  function MY_CHARSET_LOADED::add_collation, like it is done for
  user collations defined in Index.xml. The code in /mysys sets
  MY_CHARSET_LOADED::add_collation to add_compiled_collation().

- The function compare_collations() was removed.
  A new virtual function was added into my_collation_handler_st instead:

    my_bool (*eq_collation)(CHARSET_INFO *self, CHARSET_INFO *other);

  because it is the collation handler who knows how to detect equal
  collations by comparing only some of CHARSET_INFO members without
  their deep initialization.

  Three implementations were added:
  - my_ci_eq_collation_uca() for UCA collations, it compares
    _0900_ collations as equal to their corresponding _uca1400_ collations.
  - my_ci_eq_collation_utf8mb4_bin(), it compares
    utf8mb4_nopad_bin and utf8mb4_0900_bin as equal.
  - my_ci_eq_collation_generic() - the default implementation,
    which compares all collations as not equal.

  A C++ wrapper CHARSET_INFO::eq_collations() was added.
  The code in /sql was changes to use the wrapper instead of
  the former calls for the removed function compare_collations().

- A part of add_alias_for_collation() was moved into a new function
  my_ci_alloc(). It allocates a memory for a new charset_info_st
  instance together with the collation name and the comment using a single
  MY_CHARSET_LOADER::once_alloc call, which normally points to my_once_alloc().

- A part of add_alias_for_collation() was moved into a new function
  my_ci_make_comment_for_alias(). It makes an "Alias for xxx" string,
  e.g. "Alias for utf8mb4_uca1400_swedish_ai_ci" in case of
  utf8mb4_sv_0900_ai_ci.

- A part of the code in create_tailoring() was moved to
  a new function my_uca1400_collation_get_initialized_shared_uca(),
  to reuse the code between _uca1400_ and _0900_ collations.

- A new function my_collation_id_is_mysql_uca0900() was added
  in addition to my_collation_id_is_mysql_uca1400().

- Functions to build collation names were added:
   my_uca0900_collation_build_name()
   my_uca1400_collation_build_name()

- A shared function function was added:

  my_bool
  my_uca1400_collation_alloc_and_init(MY_CHARSET_LOADER *loader,
                                      LEX_CSTRING name,
                                      LEX_CSTRING comment,
                                      const uca_collation_def_param_t *param,
                                      uint id)

  It's reused to add _uca1400_ and _0900_ collations, with basic
  initialization (without deep initialization).

- The function add_compiled_collation() changed its return type from
  void to int, to make it compatible with MY_CHARSET_LOADER::add_collation.

- Functions mysql_uca0900_collation_definition_add(),
  mysql_uca0900_utf8mb4_collation_definitions_add(),
  mysql_utf8mb4_0900_bin_add() were added into ctype-uca0900.c.
  They get MY_CHARSET_LOADER as a parameter.

- Functions my_uca1400_collation_definition_add(),
  my_uca1400_collation_definitions_add() were moved from
  charset-def.c to strings/ctype-uca1400.c.
  The latter now accepts MY_CHARSET_LOADER as the first parameter
  instead of initializing a MY_CHARSET_LOADER inside.

- init_compiled_charsets() now initializes a MY_CHARSET_LOADER
  variable and passes it to all functions adding collations:
  - mysql_utf8mb4_0900_collation_definitions_add()
  - mysql_uca0900_utf8mb4_collation_definitions_add()
  - mysql_utf8mb4_0900_bin_add()

- A new structure was added into ctype-uca.h:

  typedef struct uca_collation_def_param
  {
    my_cs_encoding_t cs_id;
    uint tailoring_id;
    uint nopad_flags;
    uint level_flags;
  } uca_collation_def_param_t;

  It simplifies reusing the code for _uca1400_ and _0900_ collations.

- The definition of MY_UCA1400_COLLATION_DEFINITION was
  moved from ctype-uca.c to ctype-uca1400.h, to reuse
  the code for _uca1400_ and _0900_ collations.

- The definitions of "MY_UCA_INFO my_uca_v1400" and
  "MY_UCA_INFO my_uca1400_info_tailored[][]" were moved from
  ctype-uca.c to ctype-uca1400.c.

- The definitions/declarations of:
  - mysql_0900_collation_start,
  - struct mysql_0900_to_mariadb_1400_mapping
  - mysql_0900_to_mariadb_1400_mapping
  - mysql_utf8mb4_0900_collation_definitions_add()
  were moved from ctype-uca.c to ctype-uca0900.c

- Functions
  my_uca1400_make_builtin_collation_id()
  my_uca1400_collation_definition_init()
  my_uca1400_collation_id_uca400_compat()
  my_ci_get_collation_name_uca1400_context()
  were moved from ctype-uca.c to ctype-uca1400.c and ctype-uca1400.h

- A part of my_uca1400_collation_definition_init()
  was moved into my_uca1400_collation_source(),
  to make functions smaller.
2025-03-31 18:17:26 +04:00

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/* Copyright (c) 2002, 2013, Oracle and/or its affiliates.
Copyright (c) 2009, 2014, SkySQL 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
/*
Shared, independent copyright: (C) 2001 Jan Pazdziora.
Development of this software was supported by Neocortex, s.r.o.
MySQL AB expresses its gratitude to Jan for for giving us this software.
Bug reports and suggestions are always welcome.
This file implements the collating sequence for Windows-1250
character set. It merely extends the binary sorting of US-ASCII
by adding characters with diacritical marks into proper places.
In addition, it sorts 'ch' between 'h' and 'i', and the sorting
is case sensitive, with uppercase being sorted first, in the
second pass.
*/
/*
* This comment is parsed by configure to create ctype.c,
* so don't change it unless you know what you are doing.
*
* .configure. strxfrm_multiply_win1250ch=2
*/
#define REAL_MYSQL
#ifdef REAL_MYSQL
#include "strings_def.h"
#include <m_ctype.h>
#include "ctype-simple.h"
#else
#include <stdio.h>
#define uchar unsigned char
#endif
#ifdef HAVE_CHARSET_cp1250
const char charset_name_cp1250[]= "cp1250";
#define charset_name_cp1250_length (sizeof(charset_name_cp1250) -1)
static const uint16 tab_cp1250_uni[256]={
0,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F,
0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,
0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F,
0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,
0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F,
0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F,
0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,
0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F,
0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x20AC, 0,0x201A, 0,0x201E,0x2026,0x2020,0x2021,
0,0x2030,0x0160,0x2039,0x015A,0x0164,0x017D,0x0179,
0,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,
0,0x2122,0x0161,0x203A,0x015B,0x0165,0x017E,0x017A,
0x00A0,0x02C7,0x02D8,0x0141,0x00A4,0x0104,0x00A6,0x00A7,
0x00A8,0x00A9,0x015E,0x00AB,0x00AC,0x00AD,0x00AE,0x017B,
0x00B0,0x00B1,0x02DB,0x0142,0x00B4,0x00B5,0x00B6,0x00B7,
0x00B8,0x0105,0x015F,0x00BB,0x013D,0x02DD,0x013E,0x017C,
0x0154,0x00C1,0x00C2,0x0102,0x00C4,0x0139,0x0106,0x00C7,
0x010C,0x00C9,0x0118,0x00CB,0x011A,0x00CD,0x00CE,0x010E,
0x0110,0x0143,0x0147,0x00D3,0x00D4,0x0150,0x00D6,0x00D7,
0x0158,0x016E,0x00DA,0x0170,0x00DC,0x00DD,0x0162,0x00DF,
0x0155,0x00E1,0x00E2,0x0103,0x00E4,0x013A,0x0107,0x00E7,
0x010D,0x00E9,0x0119,0x00EB,0x011B,0x00ED,0x00EE,0x010F,
0x0111,0x0144,0x0148,0x00F3,0x00F4,0x0151,0x00F6,0x00F7,
0x0159,0x016F,0x00FA,0x0171,0x00FC,0x00FD,0x0163,0x02D9
};
/* 0000-00FD , 254 chars */
static const uchar tab_uni_cp1250_plane00[]={
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0xA0,0x00,0x00,0x00,0xA4,0x00,0xA6,0xA7,0xA8,0xA9,0x00,0xAB,0xAC,0xAD,0xAE,0x00,
0xB0,0xB1,0x00,0x00,0xB4,0xB5,0xB6,0xB7,0xB8,0x00,0x00,0xBB,0x00,0x00,0x00,0x00,
0x00,0xC1,0xC2,0x00,0xC4,0x00,0x00,0xC7,0x00,0xC9,0x00,0xCB,0x00,0xCD,0xCE,0x00,
0x00,0x00,0x00,0xD3,0xD4,0x00,0xD6,0xD7,0x00,0x00,0xDA,0x00,0xDC,0xDD,0x00,0xDF,
0x00,0xE1,0xE2,0x00,0xE4,0x00,0x00,0xE7,0x00,0xE9,0x00,0xEB,0x00,0xED,0xEE,0x00,
0x00,0x00,0x00,0xF3,0xF4,0x00,0xF6,0xF7,0x00,0x00,0xFA,0x00,0xFC,0xFD};
/* 0102-017E , 125 chars */
static const uchar tab_uni_cp1250_plane01[]={
0xC3,0xE3,0xA5,0xB9,0xC6,0xE6,0x00,0x00,0x00,0x00,0xC8,0xE8,0xCF,0xEF,0xD0,0xF0,
0x00,0x00,0x00,0x00,0x00,0x00,0xCA,0xEA,0xCC,0xEC,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC5,0xE5,0x00,0x00,0xBC,0xBE,0x00,0x00,0xA3,
0xB3,0xD1,0xF1,0x00,0x00,0xD2,0xF2,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xD5,0xF5,
0x00,0x00,0xC0,0xE0,0x00,0x00,0xD8,0xF8,0x8C,0x9C,0x00,0x00,0xAA,0xBA,0x8A,0x9A,
0xDE,0xFE,0x8D,0x9D,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xD9,0xF9,0xDB,0xFB,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x8F,0x9F,0xAF,0xBF,0x8E,0x9E};
/* 2013-20AC , 154 chars */
static const uchar tab_uni_cp1250_plane20[]={
0x96,0x97,0x00,0x00,0x00,0x91,0x92,0x82,0x00,0x93,0x94,0x84,0x00,0x86,0x87,0x95,
0x00,0x00,0x00,0x85,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x89,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x8B,0x9B,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80};
/* 02C7-02DD , 23 chars */
static const uchar tab_uni_cp1250_plane02[]={
0xA1,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xA2,0xFF,0x00,0xB2,0x00,0xBD};
/* 2122-2122 , 1 chars */
static const uchar tab_uni_cp1250_plane21[]={
0x99};
static MY_UNI_IDX idx_uni_cp1250[]={
{0x0000,0x00FD,tab_uni_cp1250_plane00},
{0x0102,0x017E,tab_uni_cp1250_plane01},
{0x2013,0x20AC,tab_uni_cp1250_plane20},
{0x02C7,0x02DD,tab_uni_cp1250_plane02},
{0x2122,0x2122,tab_uni_cp1250_plane21},
{0,0,NULL}
};
static const uchar ctype_win1250ch[] = {
0x00,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x28, 0x28, 0x28, 0x28, 0x28, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x48, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84,
0x84, 0x84, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x10, 0x10, 0x10, 0x10, 0x20,
0x20, 0x20, 0x10, 0x20, 0x10, 0x10, 0x10, 0x10,
0x20, 0x10, 0x01, 0x10, 0x01, 0x01, 0x01, 0x01,
0x20, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
0x20, 0x10, 0x02, 0x10, 0x02, 0x02, 0x02, 0x02,
0x48, 0x10, 0x10, 0x01, 0x10, 0x01, 0x10, 0x01,
0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x10, 0x01,
0x10, 0x10, 0x10, 0x02, 0x10, 0x10, 0x10, 0x10,
0x10, 0x02, 0x02, 0x10, 0x01, 0x10, 0x02, 0x02,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x10,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x10,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x10
};
static const uchar to_lower_win1250ch[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x9a, 0x8b, 0x9c, 0x9d, 0x9e, 0x9f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xb3, 0xa4, 0xb9, 0xa6, 0xdf,
0xa8, 0xa9, 0xba, 0xab, 0xac, 0xad, 0xae, 0xbf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbe, 0xbd, 0xbe, 0xbf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xd7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
};
static const uchar to_upper_win1250ch[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x8a, 0x9b, 0x8c, 0x8d, 0x8e, 0x8f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xa3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xa5, 0xaa, 0xbb, 0xbc, 0xbd, 0xbc, 0xaf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xa7,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xf7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xff
};
static const uchar sort_order_win1250ch[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
};
static const uchar _sort_order_win1250ch1[] = {
0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
/* space ord 32 0x20 */
0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91,
/* 0 ord 48 0x30 */
0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
0x9a, 0x9b,
/* colon ord 58 0x3a */
0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1,
0xa2,
/* A ord 65 0x41 */
0xa4, 0xa5,
/* C ord 67 0x43 */
0xff, 0xa8, 0xa9, 0xaa, 0xab,
0xac, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4,
0xb5, 0xb6,
/* R ord 82 0x52 */
0xb7,
/* S ord 83 0x53 */
0xb9, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2,
/* [ ord 91 0x5b */
0xc4, 0xc5, 0xc6, 0xc7, 0xc8,
0xc9,
/* a ord 97 0x61 */
0xa4, 0xa5, 0xff, 0xa8, 0xa9, 0xaa, 0xab,
0xac, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4,
0xb5, 0xb6, 0xb7, 0xb9, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2,
/* { ord 123 0x7b */
0xca, 0xcb, 0xcc, 0xcd, 0x81,
0x81, 0x81, 0xce, 0x81, 0xcf, 0xd0, 0xd1, 0xd2,
0x81, 0xd3,
/* Scaron ord 138 0x8a */
0xba, 0xd4, 0xb9, 0xbc, 0xc3, 0xc2,
0x81, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb,
0x81, 0xdc, 0xba, 0xdd, 0xb9, 0xbc, 0xc3, 0xc2,
/* nobreakspace ord 160 0xa0 */
0x82, 0xde, 0xdf, 0xb1, 0xe0, 0xa4, 0xe1, 0xe2,
0xe3, 0xe4, 0xb9, 0xe5, 0xe6, 0xe7, 0xe8, 0xc2,
0xe9, 0xea, 0xeb, 0xb1, 0xed, 0xee, 0x81, 0xef,
/* cedilla ord 183 0xb8 */
0xf0, 0xa4, 0xb9, 0xf1, 0xb1, 0xf2, 0xb1, 0xc2,
0xb7, 0xa4, 0xa4, 0xa4, 0xa4, 0xb1, 0xa6, 0xa6,
0xa7, 0xa9, 0xa9, 0xa9, 0xa9, 0xae, 0xae, 0xa8,
/* Eth ord 208 0xd0 */
0xa8, 0xb3, 0xb3, 0xb4, 0xb4, 0xb4, 0xb4, 0xf3,
0xb8, 0xbd, 0xbd, 0xbd, 0xbd, 0xc1, 0xbc, 0xbb,
/* racute ord 224 0xe0 */
0xb7, 0xa4, 0xa4, 0xa4, 0xa4, 0xb1, 0xa6, 0xa6,
0xa7, 0xa9, 0xa9, 0xa9, 0xa9, 0xae, 0xae, 0xa8,
/* eth ord 240 0xf0 */
0xa8, 0xb3, 0xb3, 0xb4, 0xb4, 0xb4, 0xb4, 0xf4,
0xb8, 0xbd, 0xbd, 0xbd, 0xbd, 0xc1, 0xbc, 0xf5
};
static uchar _sort_order_win1250ch2[] = {
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21,
/* space ord 32 0x20 */
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
/* 0 ord 48 0x30 */
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01,
/* colon ord 58 0x3a */
0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01,
/* A ord 65 0x41 */
0x01, 0x01,
/* C ord 67 0x43 */
0xff, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01,
/* R ord 82 0x52 */
0x01,
/* S ord 83 0x53 */
0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01,
/* [ ord 91 0x5b */
0x01, 0x01, 0x01, 0x01, 0x01,
0x01,
/* a ord 97 0x61 */
0x02, 0x02, 0xff, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02,
/* { ord 123 0x7b */
0x01, 0x01, 0x01, 0x01, 0x22,
0x23, 0x24, 0x01, 0x25, 0x01, 0x01, 0x01, 0x01,
0x26, 0x01,
/* Scaron ord 138 0x8a */
0x01, 0x01, 0x03, 0x03, 0x01, 0x05,
0x27, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x28, 0x01, 0x02, 0x01, 0x04, 0x04, 0x02, 0x06,
/* nobreakspace ord 160 0xa0 */
0x02, 0x01, 0x01, 0x07, 0x01, 0x11, 0x01, 0x01,
0x01, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x03,
0x01, 0x01, 0x01, 0x08, 0x01, 0x01, 0x29, 0x01,
/* cedilla ord 184 0xb8 */
0x01, 0x12, 0x06, 0x01, 0x05, 0x01, 0x06, 0x04,
0x03, 0x03, 0x05, 0x07, 0x09, 0x03, 0x03, 0x05,
0x01, 0x03, 0x09, 0x07, 0x05, 0x03, 0x05, 0x03,
/* Eth ord 208 0xd0 */
0x05, 0x03, 0x05, 0x03, 0x05, 0x09, 0x07, 0x01,
0x01, 0x05, 0x03, 0x09, 0x07, 0x03, 0x05, 0x01,
/* racute ord 224 0xe0 */
0x04, 0x04, 0x06, 0x08, 0x0a, 0x04, 0x04, 0x06,
0x02, 0x04, 0x0a, 0x08, 0x06, 0x04, 0x06, 0x04,
/* eth ord 240 0xf0 */
0x06, 0x04, 0x06, 0x04, 0x06, 0x0a, 0x08, 0x01,
0x02, 0x06, 0x04, 0x0a, 0x08, 0x04, 0x06, 0x01
};
struct wordvalue {
const uchar *word;
uchar pass1;
uchar pass2;
};
static const struct wordvalue doubles[] = {
{ (uchar*) "ch", 0xad, 0x03 },
{ (uchar*) "c", 0xa6, 0x02 },
{ (uchar*) "Ch", 0xad, 0x02 },
{ (uchar*) "CH", 0xad, 0x01 },
{ (uchar*) "C", 0xa6, 0x01 },
};
#define NEXT_CMP_VALUE(src, p, pass, value, len) \
while (1) { \
if (IS_END(p, src, len)) { \
if (pass == 0 && len > 0) { p= src; pass++; } \
else { value = 0; break; } \
} \
value = ((pass == 0) ? _sort_order_win1250ch1[*p] \
: _sort_order_win1250ch2[*p]); \
if (value == 0xff) { \
int i; \
for (i = 0; i < (int) sizeof(doubles); i++) { \
const uchar *patt = doubles[i].word; \
const uchar *q = (const uchar *) p; \
while (*patt \
&& !(IS_END(q, src, len)) \
&& (*patt == *q)) { \
patt++; q++; \
} \
if (!(*patt)) { \
value = (int)((pass == 0) \
? doubles[i].pass1 \
: doubles[i].pass2); \
p = (const uchar *) q - 1; \
break; \
} \
} \
} \
p++; \
break; \
}
#define IS_END(p, src, len) (((char *)p - (char *)src) >= (len))
static int my_strnncoll_win1250ch(CHARSET_INFO *cs __attribute__((unused)),
const uchar *s1, size_t len1,
const uchar *s2, size_t len2,
my_bool s2_is_prefix)
{
int v1, v2;
const uchar *p1, * p2;
int pass1 = 0, pass2 = 0;
int diff;
if (s2_is_prefix && len1 > len2)
len1=len2;
p1 = s1; p2 = s2;
do
{
NEXT_CMP_VALUE(s1, p1, pass1, v1, (int)len1);
NEXT_CMP_VALUE(s2, p2, pass2, v2, (int)len2);
if ((diff = v1 - v2))
return diff;
} while (v1);
return 0;
}
/*
TODO: Has to be fixed as strnncollsp in ctype-simple
*/
static
int my_strnncollsp_win1250ch(CHARSET_INFO * cs,
const uchar *s, size_t slen,
const uchar *t, size_t tlen)
{
for ( ; slen && s[slen-1] == ' ' ; slen--);
for ( ; tlen && t[tlen-1] == ' ' ; tlen--);
return my_strnncoll_win1250ch(cs,s,slen,t,tlen,0);
}
static size_t
my_strnxfrm_win1250ch(CHARSET_INFO *cs __attribute__((unused)),
uchar *dest, size_t len,
uint nweights_arg __attribute__((unused)),
const uchar *src, size_t srclen, uint flags)
{
int value;
const uchar *p;
int pass = 0;
size_t totlen = 0;
p = src;
if (!(flags & 0x0F)) /* All levels by default */
flags|= 0x0F;
while (totlen < len)
{
NEXT_CMP_VALUE(src, p, pass, value, (int)srclen);
if (!value)
break;
if ((1 << pass) & flags)
dest[totlen++] = value;
}
if ((flags & MY_STRXFRM_PAD_TO_MAXLEN) && len > totlen)
{
memset(dest + totlen, 0x00, len - totlen);
totlen= len;
}
return totlen;
}
#undef IS_END
#ifdef REAL_MYSQL
static const uchar like_range_prefix_min_win1250ch[]=
{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7,
0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
};
/*
The letter "C" is a special case:
"CH" is sorted between "H" and "I".
prefix_max for "C" is "I": prefix_max[0x43] == 0x49
prefix_max for "c" is "i": prefix_max[0x63] == 0x69
For all other characters: prefix_max[i] == i
*/
static uchar like_range_prefix_max_win1250ch[]=
{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
0x40, 0x41, 0x42, 0x49, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
0x60, 0x61, 0x62, 0x69, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7,
0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7,
0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,
0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7,
0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
};
#define min_sort_char '\x20'
#define max_sort_char '\xff'
/*
** Calculate min_str and max_str that ranges a LIKE string.
** Arguments:
** ptr Pointer to LIKE string.
** ptr_length Length of LIKE string.
** escape Escape character in LIKE. (Normally '\').
** All escape characters should be removed from min_str and max_str
** res_length Length of min_str and max_str.
** min_str Smallest case sensitive string that ranges LIKE.
** Should be space padded to res_length.
** max_str Largest case sensitive string that ranges LIKE.
** Normally padded with the biggest character sort value.
**
** The function should return 0 if ok and 1 if the LIKE string can't be
** optimized !
*/
static my_bool
my_like_range_win1250ch(CHARSET_INFO *cs __attribute__((unused)),
const char *ptr, size_t ptr_length,
pbool escape, pbool w_one, pbool w_many,
size_t res_length,
char *min_str, char *max_str,
size_t *min_length, size_t *max_length)
{
int only_min_found= 1;
const char *end = ptr + ptr_length;
char *min_org = min_str;
char *min_end = min_str + res_length;
/* return 1; */
for (; ptr != end && min_str != min_end ; ptr++)
{
if (*ptr == escape && ptr+1 != end)
ptr++; /* Skip escape */
else if (*ptr == w_one || *ptr == w_many) /* '_' or '%' in SQL */
break;
*min_str= like_range_prefix_min_win1250ch[(uint) (uchar) (*ptr)];
if (*min_str != min_sort_char)
only_min_found= 0;
min_str++;
*max_str++= like_range_prefix_max_win1250ch[(uint) (uchar) (*ptr)];
}
if (cs->state & MY_CS_BINSORT)
*min_length= (size_t) (min_str - min_org);
else
{
/* 'a\0\0... is the smallest possible string */
*min_length= res_length;
}
/* a\ff\ff... is the biggest possible string */
*max_length= res_length;
while (min_str != min_end)
{
*min_str++ = min_sort_char;
*max_str++ = max_sort_char;
}
return (only_min_found);
}
static MY_COLLATION_HANDLER my_collation_czech_cs_handler =
{
NULL, /* init */
my_strnncoll_win1250ch,
my_strnncollsp_win1250ch,
my_strnncollsp_nchars_generic_8bit,
my_strnxfrm_win1250ch,
my_strnxfrmlen_simple,
my_like_range_win1250ch,
my_wildcmp_8bit,
my_strcasecmp_8bit,
my_instr_simple,
my_hash_sort_simple,
my_propagate_simple,
my_min_str_8bit_simple,
my_max_str_8bit_simple,
my_ci_get_id_generic,
my_ci_get_collation_name_generic,
my_ci_eq_collation_generic
};
struct charset_info_st my_charset_cp1250_czech_cs =
{
34,0,0, /* number */
MY_CS_COMPILED|MY_CS_STRNXFRM|MY_CS_CSSORT|
MY_CS_STRNXFRM_BAD_NWEIGHTS|MY_CS_NON1TO1, /* state */
{ charset_name_cp1250, charset_name_cp1250_length }, /* cs name */
{ STRING_WITH_LEN("cp1250_czech_cs") }, /* name */
"", /* comment */
NULL, /* tailoring */
ctype_win1250ch,
to_lower_win1250ch,
to_upper_win1250ch,
sort_order_win1250ch,
NULL, /* uca */
tab_cp1250_uni, /* tab_to_uni */
idx_uni_cp1250, /* tab_from_uni */
NULL, /* casefold */
NULL, /* state_map */
NULL, /* ident_map */
2, /* strxfrm_multiply */
1, /* mbminlen */
1, /* mbmaxlen */
0, /* min_sort_char */
0xFF, /* max_sort_char */
' ', /* pad char */
0, /* escape_with_backslash_is_dangerous */
MY_CS_COLL_LEVELS_S2,
&my_charset_8bit_handler,
&my_collation_czech_cs_handler
};
#endif /* REAL_MYSQL */
#endif /* HAVE_CHARSET_cp1250 */
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