mariadb/sql/strfunc.h
Monty 5a759d31f7 Changing field::field_name and Item::name to LEX_CSTRING
Benefits of this patch:
- Removed a lot of calls to strlen(), especially for field_string
- Strings generated by parser are now const strings, less chance of
  accidently changing a string
- Removed a lot of calls with LEX_STRING as parameter (changed to pointer)
- More uniform code
- Item::name_length was not kept up to date. Now fixed
- Several bugs found and fixed (Access to null pointers,
  access of freed memory, wrong arguments to printf like functions)
- Removed a lot of casts from (const char*) to (char*)

Changes:
- This caused some ABI changes
  - lex_string_set now uses LEX_CSTRING
  - Some fucntions are now taking const char* instead of char*
- Create_field::change and after changed to LEX_CSTRING
- handler::connect_string, comment and engine_name() changed to LEX_CSTRING
- Checked printf() related calls to find bugs. Found and fixed several
  errors in old code.
- A lot of changes from LEX_STRING to LEX_CSTRING, especially related to
  parsing and events.
- Some changes from LEX_STRING and LEX_STRING & to LEX_CSTRING*
- Some changes for char* to const char*
- Added printf argument checking for my_snprintf()
- Introduced null_clex_str, star_clex_string, temp_lex_str to simplify
  code
- Added item_empty_name and item_used_name to be able to distingush between
  items that was given an empty name and items that was not given a name
  This is used in sql_yacc.yy to know when to give an item a name.
- select table_name."*' is not anymore same as table_name.*
- removed not used function Item::rename()
- Added comparision of item->name_length before some calls to
  my_strcasecmp() to speed up comparison
- Moved Item_sp_variable::make_field() from item.h to item.cc
- Some minimal code changes to avoid copying to const char *
- Fixed wrong error message in wsrep_mysql_parse()
- Fixed wrong code in find_field_in_natural_join() where real_item() was
  set when it shouldn't
- ER_ERROR_ON_RENAME was used with extra arguments.
- Removed some (wrong) ER_OUTOFMEMORY, as alloc_root will already
  give the error.

TODO:
- Check possible unsafe casts in plugin/auth_examples/qa_auth_interface.c
- Change code to not modify LEX_CSTRING for database name
  (as part of lower_case_table_names)
2017-04-23 22:35:46 +03:00

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2.3 KiB
C

/* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
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 02110-1301 USA */
#ifndef STRFUNC_INCLUDED
#define STRFUNC_INCLUDED
#include "my_global.h" /* ulonglong, uint */
typedef struct st_typelib TYPELIB;
ulonglong find_set(TYPELIB *lib, const char *x, uint length, CHARSET_INFO *cs,
char **err_pos, uint *err_len, bool *set_warning);
ulonglong find_set_from_flags(TYPELIB *lib, uint default_name,
ulonglong cur_set, ulonglong default_set,
const char *str, uint length, CHARSET_INFO *cs,
char **err_pos, uint *err_len, bool *set_warning);
uint find_type(const TYPELIB *lib, const char *find, uint length,
bool part_match);
uint find_type2(const TYPELIB *lib, const char *find, uint length,
CHARSET_INFO *cs);
void unhex_type2(TYPELIB *lib);
uint check_word(TYPELIB *lib, const char *val, const char *end,
const char **end_of_word);
int find_string_in_array(LEX_CSTRING * const haystack,
LEX_CSTRING * const needle,
CHARSET_INFO * const cs);
const char *flagset_to_string(THD *thd, LEX_CSTRING *result, ulonglong set,
const char *lib[]);
const char *set_to_string(THD *thd, LEX_CSTRING *result, ulonglong set,
const char *lib[]);
/*
These functions were protected by INNODB_COMPATIBILITY_HOOKS
*/
uint strconvert(CHARSET_INFO *from_cs, const char *from, uint from_length,
CHARSET_INFO *to_cs, char *to, uint to_length, uint *errors);
#endif /* STRFUNC_INCLUDED */