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mariadb/sql/parse_file.cc
Gleb Shchepa e20b9de18e Fixed bug #17823: 'arc' directories inside database directories. 
Server created "arc" directories inside database directories and
maintained there useless copies of .frm files.

Creation and renaming procedures of those copies as well as
creation of "arc" directories has been discontinued.
Removal procedure has been kept untouched to be able to
cleanup existent database directories by the DROP DATABASE
query. Also view renaming procedure has been updated to remove
these directories.
2008-09-30 17:50:28 +05:00

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/* Copyright (C) 2004 MySQL 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
// Text .frm files management routines
#include "mysql_priv.h"
#include <errno.h>
#include <m_ctype.h>
#include <my_sys.h>
#include <my_dir.h>
/* from sql_db.cc */
extern long mysql_rm_arc_files(THD *thd, MY_DIR *dirp, const char *org_path);
/*
write string with escaping
SYNOPSIS
write_escaped_string()
file - IO_CACHE for record
val_s - string for writing
RETURN
FALSE - OK
TRUE - error
*/
static my_bool
write_escaped_string(IO_CACHE *file, LEX_STRING *val_s)
{
char *eos= val_s->str + val_s->length;
char *ptr= val_s->str;
for (; ptr < eos; ptr++)
{
/*
Should be in sync with read_escaped_string() and
parse_quoted_escaped_string()
*/
switch(*ptr) {
case '\\': // escape character
if (my_b_append(file, (const byte *)STRING_WITH_LEN("\\\\")))
return TRUE;
break;
case '\n': // parameter value delimiter
if (my_b_append(file, (const byte *)STRING_WITH_LEN("\\n")))
return TRUE;
break;
case '\0': // problem for some string processing utilities
if (my_b_append(file, (const byte *)STRING_WITH_LEN("\\0")))
return TRUE;
break;
case 26: // problem for windows utilities (Ctrl-Z)
if (my_b_append(file, (const byte *)STRING_WITH_LEN("\\z")))
return TRUE;
break;
case '\'': // list of string delimiter
if (my_b_append(file, (const byte *)STRING_WITH_LEN("\\\'")))
return TRUE;
break;
default:
if (my_b_append(file, (const byte *)ptr, 1))
return TRUE;
}
}
return FALSE;
}
/*
write parameter value to IO_CACHE
SYNOPSIS
write_parameter()
file pointer to IO_CACHE structure for writing
base pointer to data structure
parameter pointer to parameter descriptor
old_version for returning back old version number value
RETURN
FALSE - OK
TRUE - error
*/
static my_bool
write_parameter(IO_CACHE *file, gptr base, File_option *parameter,
ulonglong *old_version)
{
char num_buf[20]; // buffer for numeric operations
// string for numeric operations
String num(num_buf, sizeof(num_buf), &my_charset_bin);
DBUG_ENTER("write_parameter");
switch (parameter->type) {
case FILE_OPTIONS_STRING:
{
LEX_STRING *val_s= (LEX_STRING *)(base + parameter->offset);
if (my_b_append(file, (const byte *)val_s->str, val_s->length))
DBUG_RETURN(TRUE);
break;
}
case FILE_OPTIONS_ESTRING:
{
if (write_escaped_string(file, (LEX_STRING *)(base + parameter->offset)))
DBUG_RETURN(TRUE);
break;
}
case FILE_OPTIONS_ULONGLONG:
{
num.set(*((ulonglong *)(base + parameter->offset)), &my_charset_bin);
if (my_b_append(file, (const byte *)num.ptr(), num.length()))
DBUG_RETURN(TRUE);
break;
}
case FILE_OPTIONS_REV:
{
ulonglong *val_i= (ulonglong *)(base + parameter->offset);
*old_version= (*val_i)++;
num.set(*val_i, &my_charset_bin);
if (my_b_append(file, (const byte *)num.ptr(), num.length()))
DBUG_RETURN(TRUE);
break;
}
case FILE_OPTIONS_TIMESTAMP:
{
/* string have to be allocated already */
LEX_STRING *val_s= (LEX_STRING *)(base + parameter->offset);
time_t tm= time(NULL);
get_date(val_s->str, GETDATE_DATE_TIME|GETDATE_GMT|GETDATE_FIXEDLENGTH,
tm);
val_s->length= PARSE_FILE_TIMESTAMPLENGTH;
if (my_b_append(file, (const byte *)val_s->str,
PARSE_FILE_TIMESTAMPLENGTH))
DBUG_RETURN(TRUE);
break;
}
case FILE_OPTIONS_STRLIST:
{
List_iterator_fast<LEX_STRING> it(*((List<LEX_STRING>*)
(base + parameter->offset)));
bool first= 1;
LEX_STRING *str;
while ((str= it++))
{
// We need ' ' after string to detect list continuation
if ((!first && my_b_append(file, (const byte *)STRING_WITH_LEN(" "))) ||
my_b_append(file, (const byte *)STRING_WITH_LEN("\'")) ||
write_escaped_string(file, str) ||
my_b_append(file, (const byte *)STRING_WITH_LEN("\'")))
{
DBUG_RETURN(TRUE);
}
first= 0;
}
break;
}
case FILE_OPTIONS_ULLLIST:
{
List_iterator_fast<ulonglong> it(*((List<ulonglong>*)
(base + parameter->offset)));
bool first= 1;
ulonglong *val;
while ((val= it++))
{
num.set(*val, &my_charset_bin);
// We need ' ' after string to detect list continuation
if ((!first && my_b_append(file, (const byte *)STRING_WITH_LEN(" "))) ||
my_b_append(file, (const byte *)num.ptr(), num.length()))
{
DBUG_RETURN(TRUE);
}
first= 0;
}
break;
}
default:
DBUG_ASSERT(0); // never should happened
}
DBUG_RETURN(FALSE);
}
/*
write new .frm
SYNOPSIS
sql_create_definition_file()
dir directory where put .frm
file .frm file name
type .frm type string (VIEW, TABLE)
base base address for parameter reading (structure like
TABLE)
parameters parameters description
max_versions number of versions to save
RETURN
FALSE - OK
TRUE - error
*/
my_bool
sql_create_definition_file(const LEX_STRING *dir, const LEX_STRING *file_name,
const LEX_STRING *type,
gptr base, File_option *parameters,
uint max_versions)
{
File handler;
IO_CACHE file;
char path[FN_REFLEN+1]; // +1 to put temporary file name for sure
ulonglong old_version= ULONGLONG_MAX;
int path_end;
File_option *param;
DBUG_ENTER("sql_create_definition_file");
DBUG_PRINT("enter", ("Dir: %s, file: %s, base 0x%lx",
dir->str, file_name->str, (ulong) base));
fn_format(path, file_name->str, dir->str, 0, MY_UNPACK_FILENAME);
path_end= strlen(path);
// temporary file name
path[path_end]='~';
path[path_end+1]= '\0';
if ((handler= my_create(path, CREATE_MODE, O_RDWR | O_TRUNC,
MYF(MY_WME))) <= 0)
{
DBUG_RETURN(TRUE);
}
if (init_io_cache(&file, handler, 0, SEQ_READ_APPEND, 0L, 0, MYF(MY_WME)))
goto err_w_file;
// write header (file signature)
if (my_b_append(&file, (const byte *)STRING_WITH_LEN("TYPE=")) ||
my_b_append(&file, (const byte *)type->str, type->length) ||
my_b_append(&file, (const byte *)STRING_WITH_LEN("\n")))
goto err_w_file;
// write parameters to temporary file
for (param= parameters; param->name.str; param++)
{
if (my_b_append(&file, (const byte *)param->name.str,
param->name.length) ||
my_b_append(&file, (const byte *)STRING_WITH_LEN("=")) ||
write_parameter(&file, base, param, &old_version) ||
my_b_append(&file, (const byte *)STRING_WITH_LEN("\n")))
goto err_w_cache;
}
if (end_io_cache(&file))
goto err_w_file;
if (my_close(handler, MYF(MY_WME)))
{
DBUG_RETURN(TRUE);
}
path[path_end]='\0';
#ifdef FRM_ARCHIVE
// archive copies management: disabled unused feature (see bug #17823).
if (!access(path, F_OK))
{
if (old_version != ULONGLONG_MAX && max_versions != 0)
{
// save backup
char path_arc[FN_REFLEN];
// backup old version
char path_to[FN_REFLEN];
// check archive directory existence
fn_format(path_arc, "arc", dir->str, "", MY_UNPACK_FILENAME);
if (access(path_arc, F_OK))
{
if (my_mkdir(path_arc, 0777, MYF(MY_WME)))
{
DBUG_RETURN(TRUE);
}
}
my_snprintf(path_to, FN_REFLEN, "%s/%s-%04lu",
path_arc, file_name->str, (ulong) old_version);
if (my_rename(path, path_to, MYF(MY_WME)))
{
DBUG_RETURN(TRUE);
}
// remove very old version
if (old_version > max_versions)
{
my_snprintf(path_to, FN_REFLEN, "%s/%s-%04lu",
path_arc, file_name->str,
(ulong)(old_version - max_versions));
if (!access(path_arc, F_OK) && my_delete(path_to, MYF(MY_WME)))
{
DBUG_RETURN(TRUE);
}
}
}
else
{
if (my_delete(path, MYF(MY_WME))) // no backups
{
DBUG_RETURN(TRUE);
}
}
}
#endif//FRM_ARCHIVE
{
// rename temporary file
char path_to[FN_REFLEN];
memcpy(path_to, path, path_end+1);
path[path_end]='~';
if (my_rename(path, path_to, MYF(MY_WME)))
{
DBUG_RETURN(TRUE);
}
}
DBUG_RETURN(FALSE);
err_w_cache:
end_io_cache(&file);
err_w_file:
my_close(handler, MYF(MY_WME));
DBUG_RETURN(TRUE);
}
/*
Renames a frm file (including backups) in same schema
SYNOPSIS
rename_in_schema_file
thd thread handler
schema name of given schema
old_name original file name
new_name new file name
revision revision number
num_view_backups number of backups
RETURN
0 - OK
1 - Error (only if renaming of frm failed)
*/
my_bool rename_in_schema_file(THD *thd,
const char *schema, const char *old_name,
const char *new_name, ulonglong revision,
uint num_view_backups)
{
char old_path[FN_REFLEN], new_path[FN_REFLEN], arc_path[FN_REFLEN];
strxnmov(old_path, FN_REFLEN, mysql_data_home, "/", schema, "/",
old_name, reg_ext, NullS);
(void) unpack_filename(old_path, old_path);
strxnmov(new_path, FN_REFLEN, mysql_data_home, "/", schema, "/",
new_name, reg_ext, NullS);
(void) unpack_filename(new_path, new_path);
if (my_rename(old_path, new_path, MYF(MY_WME)))
return 1;
/* check if arc_dir exists: disabled unused feature (see bug #17823). */
strxnmov(arc_path, FN_REFLEN, mysql_data_home, "/", schema, "/arc", NullS);
(void) unpack_filename(arc_path, arc_path);
#ifdef FRM_ARCHIVE
if (revision > 0 && !access(arc_path, F_OK))
{
ulonglong limit= ((revision > num_view_backups) ?
revision - num_view_backups : 0);
for (; revision > limit ; revision--)
{
my_snprintf(old_path, FN_REFLEN, "%s/%s%s-%04lu",
arc_path, old_name, reg_ext, (ulong)revision);
(void) unpack_filename(old_path, old_path);
my_snprintf(new_path, FN_REFLEN, "%s/%s%s-%04lu",
arc_path, new_name, reg_ext, (ulong)revision);
(void) unpack_filename(new_path, new_path);
my_rename(old_path, new_path, MYF(0));
}
}
#else//FRM_ARCHIVE
{ // remove obsolete 'arc' directory and files if any
MY_DIR *new_dirp;
if ((new_dirp = my_dir(arc_path, MYF(MY_DONT_SORT))))
{
DBUG_PRINT("my",("Archive subdir found: %s", arc_path));
(void) mysql_rm_arc_files(thd, new_dirp, arc_path);
}
}
#endif//FRM_ARCHIVE
return 0;
}
/*
Prepare frm to parse (read to memory)
SYNOPSIS
sql_parse_prepare()
file_name - path & filename to .frm file
mem_root - MEM_ROOT for buffer allocation
bad_format_errors - send errors on bad content
RETURN
0 - error
parser object
NOTE
returned pointer + 1 will be type of .frm
*/
File_parser *
sql_parse_prepare(const LEX_STRING *file_name, MEM_ROOT *mem_root,
bool bad_format_errors)
{
MY_STAT stat_info;
uint len;
char *end, *sign;
File_parser *parser;
File file;
DBUG_ENTER("sql__parse_prepare");
if (!my_stat(file_name->str, &stat_info, MYF(MY_WME)))
{
DBUG_RETURN(0);
}
if (stat_info.st_size > INT_MAX-1)
{
my_error(ER_FPARSER_TOO_BIG_FILE, MYF(0), file_name->str);
DBUG_RETURN(0);
}
if (!(parser= new(mem_root) File_parser))
{
DBUG_RETURN(0);
}
if (!(parser->buff= alloc_root(mem_root, stat_info.st_size+1)))
{
DBUG_RETURN(0);
}
if ((file= my_open(file_name->str, O_RDONLY | O_SHARE, MYF(MY_WME))) < 0)
{
DBUG_RETURN(0);
}
if ((len= my_read(file, (byte *)parser->buff,
stat_info.st_size, MYF(MY_WME))) ==
MY_FILE_ERROR)
{
my_close(file, MYF(MY_WME));
DBUG_RETURN(0);
}
if (my_close(file, MYF(MY_WME)))
{
DBUG_RETURN(0);
}
end= parser->end= parser->buff + len;
*end= '\0'; // barrier for more simple parsing
// 7 = 5 (TYPE=) + 1 (letter at least of type name) + 1 ('\n')
if (len < 7 ||
parser->buff[0] != 'T' ||
parser->buff[1] != 'Y' ||
parser->buff[2] != 'P' ||
parser->buff[3] != 'E' ||
parser->buff[4] != '=')
goto frm_error;
// skip signature;
parser->file_type.str= sign= parser->buff + 5;
while (*sign >= 'A' && *sign <= 'Z' && sign < end)
sign++;
if (*sign != '\n')
goto frm_error;
parser->file_type.length= sign - parser->file_type.str;
// EOS for file signature just for safety
*sign= '\0';
parser->start= sign + 1;
parser->content_ok= 1;
DBUG_RETURN(parser);
frm_error:
if (bad_format_errors)
{
my_error(ER_FPARSER_BAD_HEADER, MYF(0), file_name->str);
DBUG_RETURN(0);
}
else
DBUG_RETURN(parser); // upper level have to check parser->ok()
}
/*
parse LEX_STRING
SYNOPSIS
parse_string()
ptr - pointer on string beginning
end - pointer on symbol after parsed string end (still owned
by buffer and can be accessed
mem_root - MEM_ROOT for parameter allocation
str - pointer on string, where results should be stored
RETURN
0 - error
# - pointer on symbol after string
*/
static char *
parse_string(char *ptr, char *end, MEM_ROOT *mem_root, LEX_STRING *str)
{
// get string length
char *eol= strchr(ptr, '\n');
if (eol >= end)
return 0;
str->length= eol - ptr;
if (!(str->str= alloc_root(mem_root, str->length+1)))
return 0;
memcpy(str->str, ptr, str->length);
str->str[str->length]= '\0'; // just for safety
return eol+1;
}
/*
read escaped string from ptr to eol in already allocated str
SYNOPSIS
read_escaped_string()
ptr - pointer on string beginning
eol - pointer on character after end of string
str - target string
RETURN
FALSE - OK
TRUE - error
*/
my_bool
read_escaped_string(char *ptr, char *eol, LEX_STRING *str)
{
char *write_pos= str->str;
for (; ptr < eol; ptr++, write_pos++)
{
char c= *ptr;
if (c == '\\')
{
ptr++;
if (ptr >= eol)
return TRUE;
/*
Should be in sync with write_escaped_string() and
parse_quoted_escaped_string()
*/
switch(*ptr) {
case '\\':
*write_pos= '\\';
break;
case 'n':
*write_pos= '\n';
break;
case '0':
*write_pos= '\0';
break;
case 'z':
*write_pos= 26;
break;
case '\'':
*write_pos= '\'';
break;
default:
return TRUE;
}
}
else
*write_pos= c;
}
str->str[str->length= write_pos-str->str]= '\0'; // just for safety
return FALSE;
}
/*
parse \n delimited escaped string
SYNOPSIS
parse_escaped_string()
ptr - pointer on string beginning
end - pointer on symbol after parsed string end (still owned
by buffer and can be accessed
mem_root - MEM_ROOT for parameter allocation
str - pointer on string, where results should be stored
RETURN
0 - error
# - pointer on symbol after string
*/
char *
parse_escaped_string(char *ptr, char *end, MEM_ROOT *mem_root, LEX_STRING *str)
{
char *eol= strchr(ptr, '\n');
if (eol == 0 || eol >= end ||
!(str->str= alloc_root(mem_root, (eol - ptr) + 1)) ||
read_escaped_string(ptr, eol, str))
return 0;
return eol+1;
}
/*
parse '' delimited escaped string
SYNOPSIS
parse_quoted_escaped_string()
ptr - pointer on string beginning
end - pointer on symbol after parsed string end (still owned
by buffer and can be accessed
mem_root - MEM_ROOT for parameter allocation
str - pointer on string, where results should be stored
RETURN
0 - error
# - pointer on symbol after string
*/
static char *
parse_quoted_escaped_string(char *ptr, char *end,
MEM_ROOT *mem_root, LEX_STRING *str)
{
char *eol;
uint result_len= 0;
bool escaped= 0;
// starting '
if (*(ptr++) != '\'')
return 0;
// find ending '
for (eol= ptr; (*eol != '\'' || escaped) && eol < end; eol++)
{
if (!(escaped= (*eol == '\\' && !escaped)))
result_len++;
}
// process string
if (eol >= end ||
!(str->str= alloc_root(mem_root, result_len + 1)) ||
read_escaped_string(ptr, eol, str))
return 0;
return eol+1;
}
/*
Parser for FILE_OPTIONS_ULLLIST type value.
SYNOPSIS
get_file_options_ulllist()
ptr [in/out] pointer to parameter
end [in] end of the configuration
line [in] pointer to the line begining
base [in] base address for parameter writing (structure
like TABLE)
parameter [in] description
mem_root [in] MEM_ROOT for parameters allocation
*/
bool get_file_options_ulllist(char *&ptr, char *end, char *line,
gptr base, File_option *parameter,
MEM_ROOT *mem_root)
{
List<ulonglong> *nlist= (List<ulonglong>*)(base + parameter->offset);
ulonglong *num;
nlist->empty();
// list parsing
while (ptr < end)
{
int not_used;
char *num_end= end;
if (!(num= (ulonglong*)alloc_root(mem_root, sizeof(ulonglong))) ||
nlist->push_back(num, mem_root))
goto nlist_err;
*num= my_strtoll10(ptr, &num_end, &not_used);
ptr= num_end;
switch (*ptr) {
case '\n':
goto end_of_nlist;
case ' ':
// we cant go over buffer bounds, because we have \0 at the end
ptr++;
break;
default:
goto nlist_err_w_message;
}
}
end_of_nlist:
if (*(ptr++) != '\n')
goto nlist_err;
return FALSE;
nlist_err_w_message:
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0), parameter->name.str, line);
nlist_err:
return TRUE;
}
/*
parse parameters
SYNOPSIS
File_parser::parse()
base base address for parameter writing (structure like
TABLE)
mem_root MEM_ROOT for parameters allocation
parameters parameters description
required number of parameters in the above list. If the file
contains more parameters than "required", they will
be ignored. If the file contains less parameters
then "required", non-existing parameters will
remain their values.
hook hook called for unknown keys
hook_data some data specific for the hook
RETURN
FALSE - OK
TRUE - error
*/
my_bool
File_parser::parse(gptr base, MEM_ROOT *mem_root,
struct File_option *parameters, uint required,
Unknown_key_hook *hook)
{
uint first_param= 0, found= 0;
char *ptr= start;
char *eol;
LEX_STRING *str;
List<LEX_STRING> *list;
DBUG_ENTER("File_parser::parse");
while (ptr < end && found < required)
{
char *line= ptr;
if (*ptr == '#')
{
// it is comment
if (!(ptr= strchr(ptr, '\n')))
{
my_error(ER_FPARSER_EOF_IN_COMMENT, MYF(0), line);
DBUG_RETURN(TRUE);
}
ptr++;
}
else
{
File_option *parameter= parameters+first_param,
*parameters_end= parameters+required;
int len= 0;
for (; parameter < parameters_end; parameter++)
{
len= parameter->name.length;
// check length
if (len < (end-ptr) && ptr[len] != '=')
continue;
// check keyword
if (memcmp(parameter->name.str, ptr, len) == 0)
break;
}
if (parameter < parameters_end)
{
found++;
/*
if we found first parameter, start search from next parameter
next time.
(this small optimisation should work, because they should be
written in same order)
*/
if (parameter == parameters+first_param)
first_param++;
// get value
ptr+= (len+1);
switch (parameter->type) {
case FILE_OPTIONS_STRING:
{
if (!(ptr= parse_string(ptr, end, mem_root,
(LEX_STRING *)(base +
parameter->offset))))
{
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0),
parameter->name.str, line);
DBUG_RETURN(TRUE);
}
break;
}
case FILE_OPTIONS_ESTRING:
{
if (!(ptr= parse_escaped_string(ptr, end, mem_root,
(LEX_STRING *)
(base + parameter->offset))))
{
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0),
parameter->name.str, line);
DBUG_RETURN(TRUE);
}
break;
}
case FILE_OPTIONS_ULONGLONG:
case FILE_OPTIONS_REV:
if (!(eol= strchr(ptr, '\n')))
{
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0),
parameter->name.str, line);
DBUG_RETURN(TRUE);
}
{
int not_used;
*((ulonglong*)(base + parameter->offset))=
my_strtoll10(ptr, 0, &not_used);
}
ptr= eol+1;
break;
case FILE_OPTIONS_TIMESTAMP:
{
/* string have to be allocated already */
LEX_STRING *val= (LEX_STRING *)(base + parameter->offset);
/* yyyy-mm-dd HH:MM:SS = 19(PARSE_FILE_TIMESTAMPLENGTH) characters */
if (ptr[PARSE_FILE_TIMESTAMPLENGTH] != '\n')
{
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0),
parameter->name.str, line);
DBUG_RETURN(TRUE);
}
memcpy(val->str, ptr, PARSE_FILE_TIMESTAMPLENGTH);
val->str[val->length= PARSE_FILE_TIMESTAMPLENGTH]= '\0';
ptr+= (PARSE_FILE_TIMESTAMPLENGTH+1);
break;
}
case FILE_OPTIONS_STRLIST:
{
list= (List<LEX_STRING>*)(base + parameter->offset);
list->empty();
// list parsing
while (ptr < end)
{
if (!(str= (LEX_STRING*)alloc_root(mem_root,
sizeof(LEX_STRING))) ||
list->push_back(str, mem_root))
goto list_err;
if (!(ptr= parse_quoted_escaped_string(ptr, end, mem_root, str)))
goto list_err_w_message;
switch (*ptr) {
case '\n':
goto end_of_list;
case ' ':
// we cant go over buffer bounds, because we have \0 at the end
ptr++;
break;
default:
goto list_err_w_message;
}
}
end_of_list:
if (*(ptr++) != '\n')
goto list_err;
break;
list_err_w_message:
my_error(ER_FPARSER_ERROR_IN_PARAMETER, MYF(0),
parameter->name.str, line);
list_err:
DBUG_RETURN(TRUE);
}
case FILE_OPTIONS_ULLLIST:
if (get_file_options_ulllist(ptr, end, line, base,
parameter, mem_root))
DBUG_RETURN(TRUE);
break;
default:
DBUG_ASSERT(0); // never should happened
}
}
else
{
ptr= line;
if (hook->process_unknown_string(ptr, base, mem_root, end))
{
DBUG_RETURN(TRUE);
}
// skip unknown parameter
if (!(ptr= strchr(ptr, '\n')))
{
my_error(ER_FPARSER_EOF_IN_UNKNOWN_PARAMETER, MYF(0), line);
DBUG_RETURN(TRUE);
}
ptr++;
}
}
}
/*
NOTE: if we read less than "required" parameters, it is still Ok.
Probably, we've just read the file of the previous version, which
contains less parameters.
*/
DBUG_RETURN(FALSE);
}
/*
Dummy unknown key hook
SYNOPSIS
File_parser_dummy_hook::process_unknown_string()
unknown_key [in/out] reference on the line with unknown
parameter and the parsing point
base [in] base address for parameter writing (structure like
TABLE)
mem_root [in] MEM_ROOT for parameters allocation
end [in] the end of the configuration
NOTE
This hook used to catch no longer supported keys and process them for
backward compatibility, but it will not slow down processing of modern
format files.
This hook does nothing except debug output.
RETURN
FALSE OK
TRUE Error
*/
bool
File_parser_dummy_hook::process_unknown_string(char *&unknown_key,
gptr base, MEM_ROOT *mem_root,
char *end)
{
DBUG_ENTER("file_parser_dummy_hook::process_unknown_string");
DBUG_PRINT("info", ("Unknown key: '%60s'", unknown_key));
DBUG_RETURN(FALSE);
}
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