diff options
Diffstat (limited to 'storage/spider/spd_table.h')
| -rw-r--r-- | storage/spider/spd_table.h | 216 |
1 files changed, 212 insertions, 4 deletions
diff --git a/storage/spider/spd_table.h b/storage/spider/spd_table.h index 7165c4504f8..43958ca6e78 100644 --- a/storage/spider/spd_table.h +++ b/storage/spider/spd_table.h @@ -13,6 +13,210 @@ along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +/* + Structure used to manage Spider parameter string parsing. Types of + parameters include: + - connection strings + - UDF parameters + + A parameter string consists of one or more parameter definitions using + the following syntax: + <parameter title> <parameter value> + A comma is the separator character between multiple parameter definitions. + Parameter titles must not be quoted. Parameter values must be quoted with + single or double quotes. +*/ + +typedef struct st_spider_param_string_parse +{ + char *start_ptr; /* Pointer to the start of the parameter string */ + char *end_ptr; /* Pointer to the end of the parameter string */ + char *start_title_ptr; /* Pointer to the start of the current parameter + title */ + char *end_title_ptr; /* Pointer to the end of the current parameter + title */ + char *start_value_ptr; /* Pointer to the start of the current parameter + value */ + char *end_value_ptr; /* Pointer to the end of the current parameter + value */ + int error_num; /* Error code of the error message to print when + an error is detected */ + uint delim_title_len; /* Length of the paramater title's delimiter */ + uint delim_value_len; /* Length of the paramater value's delimiter */ + char delim_title; /* Current parameter title's delimiter character */ + char delim_value; /* Current parameter value's delimiter character */ + + /** + Initialize the parameter string parse information. + + @param param_string Pointer to the parameter string being parsed. + @param error_code Error code of the error message to print when + an error is detected. + */ + + inline void init(char *param_string, int error_code) + { + start_ptr = param_string; + end_ptr = start_ptr + strlen(start_ptr); + + init_param_title(); + init_param_value(); + + error_num = error_code; + } + + /** + Initialize the current parameter title. + */ + + inline void init_param_title() + { + start_title_ptr = end_title_ptr = NULL; + delim_title_len = 0; + delim_title = '\0'; + } + + /** + Save pointers to the start and end positions of the current parameter + title in the parameter string. Also save the parameter title's + delimiter character. + + @param start_value Pointer to the start position of the current + parameter title. + @param end_value Pointer to the end position of the current + parameter title. + */ + + inline void set_param_title(char *start_title, char *end_title) + { + start_title_ptr = start_title; + end_title_ptr = end_title; + + if (*start_title == '"' || + *start_title == '\'') + { + delim_title = *start_title; + + if (start_title >= start_ptr && *--start_title == '\\') + delim_title_len = 2; + else + delim_title_len = 1; + } + } + + /** + Initialize the current parameter value. + */ + + inline void init_param_value() + { + start_value_ptr = end_value_ptr = NULL; + delim_value_len = 0; + delim_value = '\0'; + } + + /** + Save pointers to the start and end positions of the current parameter + value in the parameter string. Also save the parameter value's + delimiter character. + + @param start_value Pointer to the start position of the current + parameter value. + @param end_value Pointer to the end position of the current + parameter value. + */ + + inline void set_param_value(char *start_value, char *end_value) + { + start_value_ptr = start_value--; + end_value_ptr = end_value; + + if (*start_value == '"' || + *start_value == '\'') + { + delim_value = *start_value; + + if (*--start_value == '\\') + delim_value_len = 2; + else + delim_value_len = 1; + } + } + + /** + Determine whether the current parameter in the parameter string has + extra parameter values. + + @return 0 Current parameter value in the parameter string + does not have extra parameter values. + <> 0 Error code indicating that the current parameter + value in the parameter string has extra + parameter values. + */ + + inline int has_extra_parameter_values() + { + int error_num = 0; + DBUG_ENTER("has_extra_parameter_values"); + + if (end_value_ptr) + { + /* There is a current parameter value */ + char *end_param_ptr = end_value_ptr; + + while (end_param_ptr < end_ptr && + (*end_param_ptr == ' ' || *end_param_ptr == '\r' || + *end_param_ptr == '\n' || *end_param_ptr == '\t')) + end_param_ptr++; + + if (end_param_ptr < end_ptr && *end_param_ptr != '\0') + { + /* Extra values in parameter definition */ + error_num = print_param_error(); + } + } + + DBUG_RETURN(error_num); + } + + /** + Restore the current parameter's input delimiter characters in the + parameter string. They were NULLed during parameter parsing. + */ + + inline void restore_delims() + { + char *end = end_title_ptr - 1; + + switch (delim_title_len) + { + case 2: + *end++ = '\\'; + /* Fall through */ + case 1: + *end = delim_title; + } + + end = end_value_ptr - 1; + switch (delim_value_len) + { + case 2: + *end++ = '\\'; + /* Fall through */ + case 1: + *end = delim_value; + } + } + + /** + Print a parameter string error message. + + @return Error code. + */ + + int print_param_error(); +} SPIDER_PARAM_STRING_PARSE; + uchar *spider_tbl_get_key( SPIDER_SHARE *share, size_t *length, @@ -60,7 +264,8 @@ void spider_free_tmp_share_alloc( char *spider_get_string_between_quote( char *ptr, - bool alloc + bool alloc, + SPIDER_PARAM_STRING_PARSE *param_string_parse = NULL ); int spider_create_string_list( @@ -68,7 +273,8 @@ int spider_create_string_list( uint **string_length_list, uint *list_length, char *str, - uint length + uint length, + SPIDER_PARAM_STRING_PARSE *param_string_parse ); int spider_create_long_list( @@ -77,7 +283,8 @@ int spider_create_long_list( char *str, uint length, long min_val, - long max_val + long max_val, + SPIDER_PARAM_STRING_PARSE *param_string_parse ); int spider_create_longlong_list( @@ -86,7 +293,8 @@ int spider_create_longlong_list( char *str, uint length, longlong min_val, - longlong max_val + longlong max_val, + SPIDER_PARAM_STRING_PARSE *param_string_parse ); int spider_increase_string_list( |