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16f374ef65
Bug #40021: Renaming view fails, archived .frm for view is missing after downgrade Original changeset: > revision-id: gshchepa@mysql.com-20081114172557-xh0jlzwal8ze3cy6 > parent: ramil@mysql.com-20081114074229-vj4fvfrpmz8jfub9 > committer: Gleb Shchepa <gshchepa@mysql.com> > branch nick: mysql-5.0-bugteam > timestamp: Fri 2008-11-14 21:25:57 +0400
124 lines
4.2 KiB
C++
124 lines
4.2 KiB
C++
/* -*- C++ -*- */
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/* Copyright (C) 2004 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef _PARSE_FILE_H_
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#define _PARSE_FILE_H_
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#define PARSE_FILE_TIMESTAMPLENGTH 19
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enum file_opt_type {
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FILE_OPTIONS_STRING, /* String (LEX_STRING) */
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FILE_OPTIONS_ESTRING, /* Escaped string (LEX_STRING) */
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FILE_OPTIONS_ULONGLONG, /* ulonglong parameter (ulonglong) */
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FILE_OPTIONS_TIMESTAMP, /* timestamp (LEX_STRING have to be
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allocated with length 20 (19+1) */
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FILE_OPTIONS_STRLIST, /* list of escaped strings
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(List<LEX_STRING>) */
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FILE_OPTIONS_ULLLIST /* list of ulonglong values
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(List<ulonglong>) */
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};
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struct File_option
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{
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LEX_STRING name; /* Name of the option */
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int offset; /* offset to base address of value */
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file_opt_type type; /* Option type */
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};
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/*
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This hook used to catch no longer supported keys and process them for
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backward compatibility.
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*/
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class Unknown_key_hook
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{
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public:
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Unknown_key_hook() {} /* Remove gcc warning */
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virtual ~Unknown_key_hook() {} /* Remove gcc warning */
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virtual bool process_unknown_string(char *&unknown_key, gptr base,
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MEM_ROOT *mem_root, char *end)= 0;
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};
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/* Dummy hook for parsers which do not need hook for unknown keys */
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class File_parser_dummy_hook: public Unknown_key_hook
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{
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public:
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File_parser_dummy_hook() {} /* Remove gcc warning */
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virtual bool process_unknown_string(char *&unknown_key, gptr base,
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MEM_ROOT *mem_root, char *end);
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};
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extern File_parser_dummy_hook file_parser_dummy_hook;
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bool get_file_options_ulllist(char *&ptr, char *end, char *line,
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gptr base, File_option *parameter,
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MEM_ROOT *mem_root);
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char *
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parse_escaped_string(char *ptr, char *end, MEM_ROOT *mem_root, LEX_STRING *str);
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class File_parser;
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File_parser *sql_parse_prepare(const LEX_STRING *file_name,
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MEM_ROOT *mem_root, bool bad_format_errors);
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my_bool
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sql_create_definition_file(const LEX_STRING *dir, const LEX_STRING *file_name,
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const LEX_STRING *type,
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gptr base, File_option *parameters);
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my_bool rename_in_schema_file(THD *thd,
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const char *schema, const char *old_name,
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const char *new_name);
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class File_parser: public Sql_alloc
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{
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char *buff, *start, *end;
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LEX_STRING file_type;
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my_bool content_ok;
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public:
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File_parser() :buff(0), start(0), end(0), content_ok(0)
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{ file_type.str= 0; file_type.length= 0; }
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my_bool ok() { return content_ok; }
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LEX_STRING *type() { return &file_type; }
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my_bool parse(gptr base, MEM_ROOT *mem_root,
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struct File_option *parameters, uint required,
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Unknown_key_hook *hook);
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friend File_parser *sql_parse_prepare(const LEX_STRING *file_name,
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MEM_ROOT *mem_root,
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bool bad_format_errors);
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};
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/*
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Custom version of standard offsetof() macro which can be used to get
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offsets of members in class for non-POD types (according to the current
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version of C++ standard offsetof() macro can't be used in such cases and
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attempt to do so causes warnings to be emitted, OTOH in many cases it is
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still OK to assume that all instances of the class has the same offsets
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for the same members).
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This is temporary solution which should be removed once File_parser class
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and related routines are refactored.
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*/
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#define my_offsetof(TYPE, MEMBER) \
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((size_t)((char *)&(((TYPE *)0x10)->MEMBER) - (char*)0x10))
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#endif /* _PARSE_FILE_H_ */
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