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| version 1.36, 2009/04/10 12:17:02 | version 1.57, 2019/09/05 15:45:13 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser MySQL driver. | Parser MySQL driver. |
| Copyright(c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| Line 10 | Line 10 |
| 2001-11-06 numrows on "HP-UX istok1 B.11.00 A 9000/869 448594332 two-user license" | 2001-11-06 numrows on "HP-UX istok1 B.11.00 A 9000/869 448594332 two-user license" |
| 3.23.42 & 4.0.0.alfa never worked, both subst & .sl version returned 0 | 3.23.42 & 4.0.0.alfa never worked, both subst & .sl version returned 0 |
| */ | */ |
| static const char *RCSId="$Id$"; | |
| #include "config_includes.h" | #include "config_includes.h" |
| #include "pa_sql_driver.h" | #include "pa_sql_driver.h" |
| volatile const char * IDENT_PARSER3MYSQL_C="$Id$" IDENT_PA_SQL_DRIVER_H; | |
| #define NO_CLIENT_LONG_LONG | #define NO_CLIENT_LONG_LONG |
| #include "mysql.h" | #include "mysql.h" |
| #include "ltdl.h" | #include "ltdl.h" |
| Line 28 static const char *RCSId="$Id$"; | Line 29 static const char *RCSId="$Id$"; |
| # define strcasecmp _stricmp | # define strcasecmp _stricmp |
| #endif | #endif |
| // for mysql < 4.1 | |
| #if !defined(CLIENT_MULTI_RESULTS) || !defined(CLIENT_MULTI_STATEMENTS) | |
| # define OLD_MYSQL_CLIENT 1 | |
| #endif | |
| #ifndef CLIENT_MULTI_RESULTS | |
| # define CLIENT_MULTI_RESULTS (1UL << 17) | |
| #endif | |
| #ifndef CLIENT_MULTI_STATEMENTS | |
| # define CLIENT_MULTI_STATEMENTS (1UL << 16) | |
| #endif | |
| static char *lsplit(char *string, char delim){ | static char *lsplit(char *string, char delim){ |
| if(string) { | if(string) { |
| if(char *v=strchr(string, delim)){ | if(char *v=strchr(string, delim)){ |
| Line 73 static void toupper_str(char *out, const | Line 61 static void toupper_str(char *out, const |
| *out++=(char)toupper(*in++); | *out++=(char)toupper(*in++); |
| } | } |
| inline static bool is_column_transcode_required(enum_field_types type) { | |
| switch(type) { | |
| case MYSQL_TYPE_NULL: | |
| #ifdef FIELD_TYPE_NEWDECIMAL | |
| case MYSQL_TYPE_NEWDECIMAL: | |
| #endif | |
| case MYSQL_TYPE_DECIMAL: | |
| case MYSQL_TYPE_FLOAT: | |
| case MYSQL_TYPE_DOUBLE: | |
| case MYSQL_TYPE_TINY: | |
| case MYSQL_TYPE_SHORT: | |
| case MYSQL_TYPE_LONG: | |
| case MYSQL_TYPE_LONGLONG: | |
| case MYSQL_TYPE_INT24: | |
| #ifdef FIELD_TYPE_BIT | |
| case MYSQL_TYPE_BIT: | |
| #endif | |
| case MYSQL_TYPE_DATE: | |
| case MYSQL_TYPE_NEWDATE: | |
| case MYSQL_TYPE_TIME: | |
| case MYSQL_TYPE_DATETIME: | |
| case MYSQL_TYPE_YEAR: | |
| case MYSQL_TYPE_TIMESTAMP: | |
| case MYSQL_TYPE_BLOB: | |
| case MYSQL_TYPE_TINY_BLOB: | |
| case MYSQL_TYPE_MEDIUM_BLOB: | |
| case MYSQL_TYPE_LONG_BLOB: | |
| return false; | |
| break; | |
| default: | |
| return true; | |
| } | |
| } | |
| inline static char* strdup(SQL_Driver_services& services, char* str, size_t length) { | |
| char *strm=(char*)services.malloc_atomic(length+1); | |
| memcpy(strm, str, length); | |
| strm[length]=0; | |
| return strm; | |
| } | |
| struct Connection { | struct Connection { |
| SQL_Driver_services* services; | SQL_Driver_services* services; |
| Line 90 public: | Line 123 public: |
| MySQL_Driver() : SQL_Driver() {} | MySQL_Driver() : SQL_Driver() {} |
| #ifndef FREEBSD4 | |
| ~MySQL_Driver() { | |
| if(mysql_server_end) | |
| mysql_server_end(); | |
| } | |
| #endif | |
| /// get api version | /// get api version |
| int api_version() { return SQL_DRIVER_API_VERSION; } | int api_version() { return SQL_DRIVER_API_VERSION; } |
| Line 109 public: | Line 135 public: |
| /** connect | /** connect |
| @param url | @param url |
| format: @b user:pass@host[:port]|[/unix/socket]/database? | format: @b user:pass@host[:port]|[/unix/socket]/database? |
| charset=value& // transcode by server with command 'SET CHARACTER SET value' | charset=value& // transcode by server with command 'SET NAMES value' |
| ClientCharset=charset& // transcode by parser | ClientCharset=charset& // transcode by parser |
| timeout=3& | timeout=3& |
| compress=0& | compress=0& |
| named_pipe=1& | named_pipe=1& |
| autocommit=1& | autocommit=1& |
| multi_statements=0 // allows more then one statement in one query | multi_statements=0 // allows more then one statement in one query |
| old_client=1 // simulates 3.xx client. not compatible with multi_statements option | 4.1+ accept not 'cp1251_koi8' but 'cp1251', 'utf8' and much more |
| 3.x, 4.0 | |
| only option for charset is cp1251_koi8. | |
| 4.1+ accept not 'cp1251_koi8' but 'cp1251', 'utf8' and much more | |
| it is usable for transcoding using sql server | it is usable for transcoding using sql server |
| */ | */ |
| void connect( | void connect(char *url, SQL_Driver_services& services, void **connection_ref /*< output: Connection* */){ |
| char *url, | |
| SQL_Driver_services& services, | |
| void **connection_ref ///< output: Connection* | |
| ){ | |
| char *user=url; | char *user=url; |
| char *s=rsplit(user, '@'); | char *s=rsplit(user, '@'); |
| char *host=0; | char *host=0; |
| Line 140 public: | Line 159 public: |
| char *db=lsplit(s, '/'); | char *db=lsplit(s, '/'); |
| char *pwd=lsplit(user, ':'); | char *pwd=lsplit(user, ':'); |
| char *error_pos=0; | char *error_pos=0; |
| char *port_cstr=lsplit(host, ':'); | |
| int port=port_cstr?strtol(port_cstr, &error_pos, 0):0; | |
| char *options=lsplit(db, '?'); | char *options=lsplit(db, '?'); |
| char *charset=0; | char *charset=0; |
| #ifdef OLD_MYSQL_CLIENT | |
| int client_flag=0; | |
| #else | |
| int client_flag=CLIENT_MULTI_RESULTS; | int client_flag=CLIENT_MULTI_RESULTS; |
| #endif | |
| Connection& connection=*(Connection *)services.malloc(sizeof(Connection)); | Connection& connection=*(Connection *)services.malloc(sizeof(Connection)); |
| *connection_ref=&connection; | *connection_ref=&connection; |
| connection.services=&services; | connection.services=&services; |
| connection.handle=mysql_init(NULL); | connection.handle=mysql_init(NULL); |
| connection.client_charset=0; | connection.client_charset=0; |
| connection.autocommit=true; | connection.autocommit=true; |
| while(options){ | while(1){ |
| if(char *key=lsplit(&options, '&')){ | char *next_host=lsplit(host, ','); |
| if(*key){ | char *host_options=next_host && options ? strdup(services, options, strlen(options)) : options; |
| char *port_cstr=lsplit(host, ':'); | |
| int port=port_cstr?strtol(port_cstr, &error_pos, 0):0; | |
| while(host_options){ | |
| char *key=lsplit(&host_options, '&'); | |
| if(key && *key){ | |
| if(char *value=lsplit(key, '=')){ | if(char *value=lsplit(key, '=')){ |
| if(strcmp(key, "ClientCharset")==0){ // transcoding with parser | if(strcmp(key, "ClientCharset")==0){ // transcoding with parser |
| toupper_str(value, value, strlen(value)); | toupper_str(value, value, strlen(value)); |
| Line 180 public: | Line 198 public: |
| if(atoi(value)) | if(atoi(value)) |
| if(mysql_options(connection.handle, MYSQL_OPT_NAMED_PIPE, 0)!=0) | if(mysql_options(connection.handle, MYSQL_OPT_NAMED_PIPE, 0)!=0) |
| services._throw(mysql_error(connection.handle)); | services._throw(mysql_error(connection.handle)); |
| } else if(strcasecmp(key, "local_infile")==0){ | |
| if(atoi(value)) | |
| if(mysql_options(connection.handle, MYSQL_OPT_LOCAL_INFILE, 0)!=0) | |
| services._throw(mysql_error(connection.handle)); | |
| } else if(strcasecmp(key, "autocommit")==0){ | } else if(strcasecmp(key, "autocommit")==0){ |
| if(atoi(value)==0) | if(atoi(value)==0) |
| connection.autocommit=false; | connection.autocommit=false; |
| } else if(strcasecmp(key, "multi_statements")==0){ | } else if(strcasecmp(key, "multi_statements")==0){ |
| #ifdef OLD_MYSQL_CLIENT | |
| services._throw("driver was built with old mysql includes so multi_statements option can't be used"); | |
| #else | |
| if(!(client_flag==CLIENT_MULTI_RESULTS || client_flag==CLIENT_MULTI_STATEMENTS)) | |
| services._throw("you can't specify together options old_client and multi_statements"); | |
| if(atoi(value)!=0) | if(atoi(value)!=0) |
| client_flag=CLIENT_MULTI_STATEMENTS; | client_flag=CLIENT_MULTI_STATEMENTS; |
| #endif | } else if(strcasecmp(key, "config_file")==0){ |
| } else if(strcasecmp(key, "old_client")==0){ | if(mysql_options(connection.handle, MYSQL_READ_DEFAULT_FILE, value)!=0) |
| #ifdef OLD_MYSQL_CLIENT | services._throw(mysql_error(connection.handle)); |
| services._throw("driver was built with old mysql includes so old_client option can't be used"); | } else if(strcasecmp(key, "config_group")==0){ |
| #else | if(mysql_options(connection.handle, MYSQL_READ_DEFAULT_GROUP, value)!=0) |
| if(!(client_flag==CLIENT_MULTI_RESULTS || client_flag==0)) | services._throw(mysql_error(connection.handle)); |
| services._throw("you can't specify together options old_client and multi_statements"); | |
| if(atoi(value)!=0) | |
| client_flag=0; | |
| #endif | |
| } else | } else |
| services._throw("unknown connect option" /*key*/); | services._throw("unknown connect option" /*key*/); |
| } else | } else |
| services._throw("connect option without =value" /*key*/); | services._throw("connect option without =value" /*key*/); |
| } | } |
| } | } |
| } | |
| if(!mysql_real_connect( | if(mysql_real_connect(connection.handle, host, user, pwd, db, port, unix_socket, client_flag)) |
| connection.handle, | break; |
| host, user, pwd, db, | |
| port?port:MYSQL_PORT, | if(!next_host) |
| unix_socket, | services._throw(mysql_error(connection.handle)); |
| client_flag | |
| ) | host=next_host; |
| ){ | |
| services._throw(mysql_error(connection.handle)); | |
| } | } |
| if(charset){ | if(charset){ |
| char statement[MAX_STRING]="SET CHARACTER SET "; | char statement[MAX_STRING+1]="SET NAMES "; |
| strncat(statement, charset, MAX_STRING); | strncat(statement, charset, MAX_STRING); |
| _exec(connection, statement); | _exec(connection, statement); |
| } | } |
| Line 253 public: | Line 263 public: |
| return mysql_ping(connection.handle)==0; | return mysql_ping(connection.handle)==0; |
| } | } |
| const char* quote(void *aconnection, const char *from, unsigned int length) { | // charset here is services.request_charset(), not connection.client_charset |
| // thus we can't use the sql server quoting support | |
| const char* quote(void *aconnection, const char *str, unsigned int length) { | |
| const char* from; | |
| const char* from_end=str+length; | |
| size_t quoted=0; | |
| for(from=str; from<from_end; from++){ | |
| switch (*from) { | |
| case 0: | |
| case '\n': | |
| case '\r': | |
| case '\032': | |
| case '\\': | |
| case '\'': | |
| case '"': | |
| quoted++; | |
| } | |
| } | |
| if(!quoted) | |
| return str; | |
| Connection& connection=*static_cast<Connection*>(aconnection); | Connection& connection=*static_cast<Connection*>(aconnection); |
| /* | char *result=(char*)connection.services->malloc_atomic(length + quoted + 1); |
| 3.23.22b | char *to = result; |
| You must allocate the to buffer to be at least length*2+1 bytes long. | |
| (In the worse case, each character may need to be encoded as using two bytes, | for(from=str; from<from_end; from++){ |
| and you need room for the terminating null byte.) | char escape; |
| */ | switch (*from) { |
| char *result=(char*)connection.services->malloc_atomic(length*2+1); | case 0: |
| mysql_escape_string(result, from, length); | escape= '0'; |
| break; | |
| case '\n': | |
| escape= 'n'; | |
| break; | |
| case '\r': | |
| escape= 'r'; | |
| break; | |
| case '\032': | |
| escape= 'Z'; | |
| break; | |
| case '\\': | |
| case '\'': | |
| case '"': | |
| escape= *from; | |
| break; | |
| default: | |
| *to++=*from; | |
| continue; | |
| } | |
| *to++= '\\'; | |
| *to++= escape; | |
| } | |
| *to=0; | |
| return result; | return result; |
| } | } |
| Line 281 public: | Line 338 public: |
| bool transcode_needed=_transcode_required(connection); | bool transcode_needed=_transcode_required(connection); |
| // transcode query from $request:charset to ?ClientCharset | size_t statement_size=0; |
| if(transcode_needed){ | |
| size_t length=strlen(astatement); | if(transcode_needed) { |
| services.transcode(astatement, length, | statement_size=strlen(astatement); |
| astatement, length, | // transcode query from $request:charset to ?ClientCharset |
| services.request_charset(), | services.transcode(astatement, statement_size, astatement, statement_size, services.request_charset(), connection.client_charset); |
| connection.client_charset); | |
| } | } |
| const char *statement; | const char *statement; |
| if(offset || limit!=SQL_NO_LIMIT){ | if(offset || limit!=SQL_NO_LIMIT) { |
| size_t statement_size=strlen(astatement); | if(!statement_size) |
| statement_size=strlen(astatement); | |
| char *statement_limited=(char *)services.malloc_atomic( | char *statement_limited=(char *)services.malloc_atomic( |
| statement_size+MAX_NUMBER*2+8/* LIMIT #,#*/+1); | statement_size+MAX_NUMBER*2+8/* LIMIT #,#*/+1); |
| char *cur=statement_limited; | char *cur=statement_limited; |
| memcpy(cur, astatement, statement_size); cur+=statement_size; | memcpy(cur, astatement, statement_size); cur+=statement_size; |
| cur+=sprintf(cur, " LIMIT "); | cur+=sprintf(cur, " LIMIT "); |
| if(offset) | if(offset) |
| cur+=snprintf(cur, MAX_NUMBER+1, "%u,", offset); | cur+=snprintf(cur, MAX_NUMBER, "%lu,", offset); |
| if(limit!=SQL_NO_LIMIT) | if(limit!=SQL_NO_LIMIT) |
| cur+=snprintf(cur, MAX_NUMBER, "%u", limit); | cur+=snprintf(cur, MAX_NUMBER, "%lu", limit); |
| statement=statement_limited; | statement=statement_limited; |
| } else | } else |
| statement=astatement; | statement=astatement; |
| if(mysql_query(connection.handle, statement)) | if(mysql_query(connection.handle, statement)) |
| _throw(connection, mysql_error(connection.handle)); | _throw(connection, mysql_error(connection.handle)); |
| if(!(res=mysql_store_result(connection.handle)) && mysql_field_count(connection.handle)) | if(!(res=mysql_store_result(connection.handle)) && mysql_field_count(connection.handle)) |
| _throw(connection, mysql_error(connection.handle)); | _throw(connection, mysql_error(connection.handle)); |
| if(!res) // empty result: insert|delete|update|... | if(!res) // empty result: insert|delete|update|... |
| return; | return; |
| int column_count=mysql_num_fields(res); | size_t column_count=mysql_num_fields(res); |
| if(!column_count) // old client | if(!column_count) // old client |
| column_count=mysql_field_count(connection.handle); | column_count=mysql_field_count(connection.handle); |
| Line 321 public: | Line 378 public: |
| mysql_free_result(res); | mysql_free_result(res); |
| services._throw("result contains no columns"); | services._throw("result contains no columns"); |
| } | } |
| bool failed=false; | bool failed=false; |
| SQL_Error sql_error; | SQL_Error sql_error; |
| #define CHECK(afailed) \ | |
| if(afailed) { \ | |
| failed=true; \ | |
| goto cleanup; \ | |
| } | |
| for(int i=0; i<column_count; i++){ | #define CHECK(afailed) \ |
| if(MYSQL_FIELD *field=mysql_fetch_field(res)){ | if(afailed) { \ |
| size_t length=strlen(field->name); | failed=true; \ |
| char* strm=(char*)services.malloc_atomic(length+1); | goto cleanup; \ |
| memcpy(strm, field->name, length+1); | |
| const char* str=strm; | |
| // transcode column name from ?ClientCharset to $request:charset | |
| if(transcode_needed){ | |
| services.transcode(str, length, | |
| str, length, | |
| connection.client_charset, | |
| services.request_charset()); | |
| } | |
| CHECK(handlers.add_column(sql_error, str, length)); | |
| } else { | |
| // seen some broken client, | |
| // which reported "44" for column count of response to "select 2+2" | |
| column_count=i; | |
| break; | |
| } | |
| } | } |
| CHECK(handlers.before_rows(sql_error)); | #define DO_FETCH_FIELDS(transcode_column_name) { \ |
| for(size_t i=0; i<column_count; i++) { \ | |
| while(MYSQL_ROW mysql_row=mysql_fetch_row(res)){ | if(MYSQL_FIELD *field = mysql_fetch_field(res)){ \ |
| CHECK(handlers.add_row(sql_error)); | size_t length=field->name_length; \ |
| unsigned long *lengths=mysql_fetch_lengths(res); | const char* str=strdup(services, field->name, length); \ |
| for(int i=0; i<column_count; i++){ | transcode_column_name \ |
| size_t length=(size_t)lengths[i]; | CHECK(handlers.add_column(sql_error, str, length)); \ |
| const char* str; | } else { \ |
| if(length){ | /* seen broken client, that reported "44" column count for "select 2+2" */ \ |
| char *strm=(char*)services.malloc_atomic(length+1); | column_count=i; \ |
| memcpy(strm, mysql_row[i], length); | break; \ |
| strm[length]=0; | } \ |
| str=strm; | } \ |
| } | |
| // transcode cell value from ?ClientCharset to $request:charset | |
| if(transcode_needed) | #define DO_FETCH_ROWS(transcode_cell_value) { \ |
| services.transcode(str, length, | while(MYSQL_ROW mysql_row=mysql_fetch_row(res)) { \ |
| str, length, | CHECK(handlers.add_row(sql_error)); \ |
| connection.client_charset, | unsigned long *lengths=mysql_fetch_lengths(res); \ |
| services.request_charset()); | for(size_t i=0; i<column_count; i++) { \ |
| } else | const char* str=0; \ |
| str=0; | size_t length=lengths[i]; \ |
| CHECK(handlers.add_row_cell(sql_error, str, length)); | if(length) { \ |
| } | str=strdup(services, mysql_row[i], length); \ |
| transcode_cell_value \ | |
| } \ | |
| CHECK(handlers.add_row_cell(sql_error, str, length)); \ | |
| } \ | |
| } \ | |
| } | |
| if(transcode_needed) { | |
| bool transcode_column[column_count]; | |
| DO_FETCH_FIELDS( | |
| transcode_column[i] = is_column_transcode_required(field->type); | |
| // transcode column's name from ?ClientCharset to $request:charset | |
| services.transcode(str, length, str, length, connection.client_charset, services.request_charset()); | |
| ) | |
| CHECK(handlers.before_rows(sql_error)); | |
| DO_FETCH_ROWS( | |
| // transcode cell's value from ?ClientCharset to $request:charset | |
| if(transcode_column[i]) | |
| services.transcode(str, length, str, length, connection.client_charset, services.request_charset()); | |
| ) | |
| } else { | |
| // without transcoding | |
| DO_FETCH_FIELDS() | |
| CHECK(handlers.before_rows(sql_error)); | |
| DO_FETCH_ROWS() | |
| } | } |
| cleanup: | cleanup: |
| mysql_free_result(res); | mysql_free_result(res); |
| Line 395 private: | Line 454 private: |
| void _throw(Connection& connection, const char* aerr_msg) { | void _throw(Connection& connection, const char* aerr_msg) { |
| size_t length=strlen(aerr_msg); | size_t length=strlen(aerr_msg); |
| if(length && _transcode_required(connection)) { | if(length && _transcode_required(connection)) { |
| connection.services->transcode(aerr_msg, length, | connection.services->transcode(aerr_msg, length, aerr_msg, length, connection.client_charset, connection.services->request_charset()); |
| aerr_msg, length, | |
| connection.client_charset, | |
| connection.services->request_charset()); | |
| } | } |
| connection.services->_throw(aerr_msg); | connection.services->_throw(aerr_msg); |
| } | } |
| Line 409 private: | Line 465 private: |
| private: // mysql client library funcs | private: // mysql client library funcs |
| typedef MYSQL* (STDCALL *t_mysql_init)(MYSQL *); t_mysql_init mysql_init; | typedef MYSQL* (STDCALL *t_mysql_init)(MYSQL *); t_mysql_init mysql_init; |
| typedef void (STDCALL *t_mysql_server_end)(); t_mysql_server_end mysql_server_end; | typedef void (STDCALL *t_mysql_server_end)(); t_mysql_server_end mysql_server_end; |
| typedef int (STDCALL *t_mysql_options)(MYSQL *mysql, enum mysql_option option, const char *arg); t_mysql_options mysql_options; | |
| typedef int (STDCALL *t_mysql_options)(MYSQL *mysql, enum mysql_option option, const char *arg); t_mysql_options mysql_options; | |
| typedef MYSQL_RES* (STDCALL *t_mysql_store_result)(MYSQL *); t_mysql_store_result mysql_store_result; | typedef MYSQL_RES* (STDCALL *t_mysql_store_result)(MYSQL *); t_mysql_store_result mysql_store_result; |
| typedef int (STDCALL *t_mysql_query)(MYSQL *, const char *q); t_mysql_query mysql_query; | typedef int (STDCALL *t_mysql_query)(MYSQL *, const char *q); t_mysql_query mysql_query; |
| typedef char* (STDCALL *t_mysql_error)(MYSQL *); t_mysql_error mysql_error; | typedef char* (STDCALL *t_mysql_error)(MYSQL *); t_mysql_error mysql_error; |
| static char* STDCALL subst_mysql_error(MYSQL *mysql) { return (mysql)->net.last_error; } | static char* STDCALL subst_mysql_error(MYSQL *mysql) { return (mysql)->net.last_error; } |
| typedef MYSQL* (STDCALL *t_mysql_real_connect)(MYSQL *, const char *host, | typedef MYSQL* (STDCALL *t_mysql_real_connect)(MYSQL *, const char *host, const char *user, const char *passwd, const char *db, unsigned int port, const char *unix_socket, unsigned int clientflag); t_mysql_real_connect mysql_real_connect; |
| const char *user, | |
| const char *passwd, | typedef void (STDCALL *t_mysql_close)(MYSQL *); t_mysql_close mysql_close; |
| const char *db, | |
| unsigned int port, | typedef int (STDCALL *t_mysql_ping)(MYSQL *); t_mysql_ping mysql_ping; |
| const char *unix_socket, | |
| unsigned int clientflag); t_mysql_real_connect mysql_real_connect; | typedef unsigned long (STDCALL *t_mysql_escape_string)(char *to,const char *from, unsigned long from_length); t_mysql_escape_string mysql_escape_string; |
| typedef void (STDCALL *t_mysql_close)(MYSQL *); t_mysql_close mysql_close; | typedef void (STDCALL *t_mysql_free_result)(MYSQL_RES *result); t_mysql_free_result mysql_free_result; |
| typedef int (STDCALL *t_mysql_ping)(MYSQL *); t_mysql_ping mysql_ping; | |
| typedef unsigned long (STDCALL *t_mysql_escape_string)(char *to,const char *from, | |
| unsigned long from_length); t_mysql_escape_string mysql_escape_string; | |
| typedef void (STDCALL *t_mysql_free_result)(MYSQL_RES *result); t_mysql_free_result mysql_free_result; | |
| typedef unsigned long* (STDCALL *t_mysql_fetch_lengths)(MYSQL_RES *result); t_mysql_fetch_lengths mysql_fetch_lengths; | typedef unsigned long* (STDCALL *t_mysql_fetch_lengths)(MYSQL_RES *result); t_mysql_fetch_lengths mysql_fetch_lengths; |
| typedef MYSQL_ROW (STDCALL *t_mysql_fetch_row)(MYSQL_RES *result); t_mysql_fetch_row mysql_fetch_row; | |
| typedef MYSQL_FIELD* (STDCALL *t_mysql_fetch_field)(MYSQL_RES *result); t_mysql_fetch_field mysql_fetch_field; | |
| typedef unsigned int (STDCALL *t_mysql_num_fields)(MYSQL_RES *); t_mysql_num_fields mysql_num_fields; | |
| typedef unsigned int (STDCALL *t_mysql_field_count)(MYSQL *); t_mysql_field_count mysql_field_count; | |
| static unsigned int STDCALL subst_mysql_num_fields(MYSQL_RES *res) { return res->field_count; } | typedef MYSQL_ROW (STDCALL *t_mysql_fetch_row)(MYSQL_RES *result); t_mysql_fetch_row mysql_fetch_row; |
| static unsigned int STDCALL subst_mysql_field_count(MYSQL *mysql) { return mysql->field_count; } | typedef MYSQL_FIELD* (STDCALL *t_mysql_fetch_field)(MYSQL_RES *result); t_mysql_fetch_field mysql_fetch_field; |
| typedef unsigned int (STDCALL *t_mysql_num_fields)(MYSQL_RES *); t_mysql_num_fields mysql_num_fields; | |
| typedef unsigned int (STDCALL *t_mysql_field_count)(MYSQL *); t_mysql_field_count mysql_field_count; | |
| static unsigned int STDCALL subst_mysql_num_fields(MYSQL_RES *res) { return res->field_count; } | |
| static unsigned int STDCALL subst_mysql_field_count(MYSQL *mysql) { return mysql->field_count; } | |
| private: // mysql client library funcs linking | private: // mysql client library funcs linking |
| const char *dlink(const char *dlopen_file_spec) { | const char *dlink(const char *dlopen_file_spec) { |
| if(lt_dlinit()) | if(lt_dlinit()){ |
| return lt_dlerror(); | if(const char* result=lt_dlerror()) |
| return result; | |
| return "can not prepare to dynamic loading"; | |
| } | |
| lt_dlhandle handle=lt_dlopen(dlopen_file_spec); | lt_dlhandle handle=lt_dlopen(dlopen_file_spec); |