diff -r 02f309e10552 -r bdbf922e246f plugins/include/dbi.inc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/plugins/include/dbi.inc Fri Jun 01 02:30:29 2007 +0000 @@ -0,0 +1,445 @@ +/** + * vim: set ts=4 : + * =============================================================== + * SourceMod (C)2004-2007 AlliedModders LLC. All rights reserved. + * =============================================================== + * + * This file is part of the SourceMod/SourcePawn SDK. This file may only be used + * or modified under the Terms and Conditions of its License Agreement, which is found + * in LICENSE.txt. The Terms and Conditions for making SourceMod extensions/plugins + * may change at any time. To view the latest information, see: + * http://www.sourcemod.net/license.php + * + * Version: $Id$ + */ + +#if defined _dbi_included + #endinput +#endif +#define _dbi_included + +/** + * @handle Driver + * + * Contains information about an SQL driver. + */ + +/** + * @handle Database + * + * Contains information about a database connection. + */ + +/** + * @handle Query + * + * Contains information about an active query and its + * result sets. + */ + +/** + * @handle Statement : Query + * + * Extends a Query Handle and can be used as a Query Handle. + * Statement Handles are for prepared queries and contain + * their own function for binding parameters. Statement + * Handles can be used instead of database Handles in a few + * select functions. + */ + +/** + * Describes a database field fetch status. + */ +enum DBResult +{ + DBVal_Error = 0, /**< Column number/field is invalid. */ + DBVal_TypeMismatch = 1, /**< You cannot retrieve this data with this type. */ + DBVal_Null = 2, /**< Field has no data (NULL) */ + DBVal_Data = 3, /**< Field has data */ +} + +/** + * Creates an SQL connection from a named configuration. + * + * @param confname Named configuration. + * @param persistent True to re-use a previous persistent connection if + * possible, false otherwise. + * @param error Error buffer. + * @param maxlength Maximum length of the error buffer. + * @return A database connection Handle, or INVALID_HANDLE on failure. + */ +native Handle:SQL_Connect(const String:confname[], bool:persistent, String:error[], maxlength); + +/** + * Creates a default SQL connection. + * + * @param error Error buffer. + * @param maxlength Maximum length of the error buffer. + * @param persistent True to re-use a previous persistent connection + * if possible, false otherwise. + * @return A database connection Handle, or INVALID_HANDLE on failure. + */ +stock Handle:SQL_DefConnect(String:error[], maxlength, bool:persistent=true) +{ + return SQL_Connect("default", persistent, error, maxlength); +} + +/** + * Creates an SQL connection from specific parameters. + * + * @param driver Driver Handle, or INVALID_HANDLE for default. + * @param host Host name. + * @param user User name. + * @param pass User password. + * @param database Database name. + * @param error Error buffer. + * @param maxlength Maximum length of the error buffer. + * @param persistent True to re-use a previous persistent connection + * if possible, false otherwise. + * @param port Optional port to specify. + * @param maxTimeout Maximum timeout in seconds if applicable. + * @return A database connection Handle, or INVALID_HANDLE on failure. + * @error Invalid driver Handle other than INVALID_HANDLE. + */ +native Handle:SQL_ConnectEx(Handle:driver, + const String:host[], + const String:user[], + const String:pass[], + const String:database[], + String:error[], + maxlength, + bool:persistent=true, + port=0, + maxTimeout=0); + +/** + * Returns a driver Handle from a name string. + * + * If the driver is not found, SourceMod will attempt + * to load an extension named dbi..ext.[dll|so]. + * + * @param name Driver identification string, or an empty + * string to return the default driver. + * @return Driver Handle, or INVALID_HANDLE on failure. + */ +native Handle:SQL_GetDriver(const String:name[]=""); + +/** + * Retrieves a driver's identification string. + * + * @param driver Driver Handle, or INVALID_HANDLE for the default driver. + * @param ident Identification string buffer. + * @param maxlength Maximum length of the buffer. + * @noreturn + * @error Invalid Handle other than INVALID_HANDLE. + */ +native SQL_GetDriverIdent(Handle:driver, String:ident[], maxlength); + +/** + * Retrieves a driver's product string. + * + * @param driver Driver Handle, or INVALID_HANDLE for the default driver. + * @param product Product string buffer. + * @param maxlength Maximum length of the buffer. + * @noreturn + * @error Invalid Handle other than INVALID_HANDLE. + */ +native SQL_GetDriverProduct(Handle:driver, String:product[], maxlength); + +/** + * Returns the number of affected rows from the last query. + * + * @param hndl A database OR statement Handle. + * @return Number of rows affected by the last query. + * @error Invalid database or statement Handle. + */ +native SQL_GetAffectedRows(Handle:hndl); + +/** + * Returns the last query's insertion id. + * + * @param hndl A database OR statement Handle. + * @return Last query's insertion id. + * @error Invalid database or statement Handle. + */ +native SQL_GetInsertId(Handle:hndl); + +/** + * Returns the error reported by the last query. + * + * @param hndl A database OR statement Handle. + * @param error Error buffer. + * @param maxlength Maximum length of the buffer. + * @return True if there was an error, false otherwise. + * @error Invalid database or statement Handle. + */ +native bool:SQL_GetError(Handle:hndl, String:error[], maxlength); + +/** + * Quotes a database string for literal insertion. This is not needed + * for binding strings in prepared statements. + * + * @param hndl A database Handle. + * @param string String to quote. + * @param buffer Buffer to store quoted string in. + * @param maxlength Maximum length of the buffer. + * @param written Optionally returns the number of bytes written. + * @return True on success, false if buffer is not big enough. + * The buffer must be at least 2*strlen(string)+1. + * @error Invalid database or statement Handle. + */ +native bool:SQL_QuoteString(Handle:database, const String:string[], String:buffer[], maxlength, &written=0); + +/** + * Executes a query and ignores the result set. + * + * @param database A database Handle. + * @param query Query string. + * @return True if query succeeded, false otherwise. Use + * SQL_GetError to find the last error. + * @error Invalid database Handle. + */ +native bool:SQL_FastQuery(Handle:database, const String:query[]); + +/** + * Executes a simple query and returns a new query Handle for + * receiving the results. + * + * @param database A database Handle. + * @param query Query string. + * @return A new Query Handle on success, INVALID_HANDLE + * otherwise. The Handle must be freed with CloseHandle(). + * @error Invalid database Handle. + */ +native Handle:SQL_Query(Handle:database, const String:query[]); + +/** + * Creates a new prepared statement query. Prepared statements can + * be executed any number of times. They can also have placeholder + * parameters, similar to variables, which can be bound safely and + * securely (for example, you do not need to quote bound strings). + * + * Statement handles will work in any function that accepts a Query handle. + * + * @param database A database Handle. + * @param query Query string. + * @param error Error buffer. + * @param maxlength Maximum size of the error buffer. + * @return A new statement Handle on success, INVALID_HANDLE + * otherwise. The Handle must be freed with CloseHandle(). + * @error Invalid database Handle. + */ +native Handle:SQL_PrepareQuery(Handle:database, const String:query[], String:error[], maxlength); + +/** + * Advances to the next set of results. + * + * In some SQL implementations, multiple result sets can exist on one query. + * This is possible in MySQL with simple queries when executing a CALL + * query. If this is the case, all result sets must be processed before + * another query is made. + * + * @param query A query Handle. + * @return True if there was another result set, false otherwise. + * @error Invalid query Handle. + */ +native bool:SQL_FetchMoreResults(Handle:query); + +/** + * Returns whether or not a result set exists. This will + * return true even if 0 results were returned, but false + * on queries like UPDATE, INSERT, or DELETE. + * + * @param query A query (or statement) Handle. + * @return True if there is a result set, false otherwise. + * @error Invalid query Handle. + */ +native bool:SQL_HasResultSet(Handle:query); + +/** + * Retrieves the number of rows in the last result set. + * + * @param query A query (or statement) Handle. + * @error Invalid query Handle. + */ +native SQL_GetRowCount(Handle:query); + +/** + * Retrieves the name of a field by index. + * + * @param query A query (or statement) Handle. + * @param field Field number (starting from 0). + * @param name Name buffer. + * @param maxlength Maximum length of the name buffer. + * @noreturn + * @error Invalid query Handle, invalid field index, or + * no current result set. + */ +native SQL_FieldNumToName(Handle:query, field, String:name[], maxlength); + +/** + * Retrieves a field index by name. + * + * @param query A query (or statement) Handle. + * @param name Name of the field (case sensitive). + * @param field Variable to store field index in. + * @return True if found, false if not found. + * @error Invalid query Handle or no current result set. + */ +native bool:SQL_FieldNameToNum(Handle:query, const String:name[], &field); + +/** + * Fetches a row from the current result set. This must be + * successfully called before any results are fetched. + * + * If this function fails, SQL_MoreResults() can be used to + * tell if there was an error or the result set is finished. + * + * @param query A query (or statement) Handle. + * @return True if a row was fetched, false otherwise. + * @error Invalid query Handle. + */ +native bool:SQL_FetchRow(Handle:query); + +/** + * Returns if there are more rows. + * + * @param query A query (or statement) Handle. + * @return True if there are more rows, false otherwise. + * @error Invalid query Handle. + */ +native bool:SQL_MoreRows(Handle:query); + +/** + * Rewinds a result set back to the first result. + * + * @param query A query (or statement) Handle. + * @return True on success, false otherwise. + * @error Invalid query Handle or no current result set. + */ +native bool:SQL_Rewind(Handle:query); + +/** + * Fetches a string from a field in the current row of a result set. + * If the result is NULL, an empty string will be returned. A NULL + * check can be done with the result parameter, or SQL_IsFieldNull(). + * + * @param query A query (or statement) Handle. + * @param field The field index (starting from 0). + * @param buffer String buffer. + * @param maxlength Maximum size of the string buffer. + * @param result Optional variable to store the status of the return value. + * @return Number of bytes written. + * @error Invalid query Handle or field index, invalid + * type conversion requested from the database, + * or no current result set. + */ +native SQL_FetchString(Handle:query, field, String:buffer[], maxlength, &DBResult:result=DBVal_Error); + +/** + * Fetches a float from a field in the current row of a result set. + * If the result is NULL, a value of 0.0 will be returned. A NULL + * check can be done with the result parameter, or SQL_IsFieldNull(). + * + * @param query A query (or statement) Handle. + * @param field The field index (starting from 0). + * @param result Optional variable to store the status of the return value. + * @return A float value. + * @error Invalid query Handle or field index, invalid + * type conversion requested from the database, + * or no current result set. + */ +native Float:SQL_FetchFloat(Handle:query, field, &DBResult:result=DBVal_Error); + +/** + * Fetches an integer from a field in the current row of a result set. + * If the result is NULL, a value of 0 will be returned. A NULL + * check can be done with the result parameter, or SQL_IsFieldNull(). + * + * @param query A query (or statement) Handle. + * @param field The field index (starting from 0). + * @param result Optional variable to store the status of the return value. + * @return An integer value. + * @error Invalid query Handle or field index, invalid + * type conversion requested from the database, + * or no current result set. + */ +native SQL_FetchInt(Handle:query, field, &DBResult:result=DBVal_Error); + +/** + * Returns whether a field's data in the current row of a result set is + * NULL or not. NULL is an SQL type which means "no data." + * + * @param query A query (or statement) Handle. + * @param field The field index (starting from 0). + * @return True if data is NULL, false otherwise. + * @error Invalid query Handle or field index, or no + * current result set. + */ +native bool:SQL_IsFieldNull(Handle:query, field); + +/** + * Returns the length of a field's data in the current row of a result + * set. This only needs to be called for strings to determine how many + * bytes to use. Note that the return value does not include the null + * terminator. + * + * @param query A query (or statement) Handle. + * @param field The field index (starting from 0). + * @return Number of bytes for the field's data size. + * @error Invalid query Handle or field index or no + * current result set. + */ +native SQL_FetchSize(Handle:query, field); + +/** + * Binds a parameter in a prepared statement to a given integer value. + * + * @param statement A statement (prepared query) Handle. + * @param param The parameter index (starting from 0). + * @param number The number to bind. + * @param signed True to bind the number as signed, false to + * bind it as unsigned. + * @noreturn + * @error Invalid statement Handle or parameter index, or + * SQL error. + */ +native SQL_BindParamInt(Handle:statement, param, number, bool:signed=true); + +/** + * Binds a parameter in a prepared statement to a given float value. + * + * @param statement A statement (prepared query) Handle. + * @param param The parameter index (starting from 0). + * @param float The float number to bind. + * @noreturn + * @error Invalid statement Handle or parameter index, or + * SQL error. + */ +native SQL_BindParamFloat(Handle:statement, param, Float:value); + +/** + * Binds a parameter in a prepared statement to a given string value. + * + * @param statement A statement (prepared query) Handle. + * @param param The parameter index (starting from 0). + * @param value The string to bind. + * @param copy Whether or not SourceMod should copy the value + * locally if necessary. If the string contents + * won't change before calling SQL_Execute(), this + * can be set to false for optimization. + * @noreturn + * @error Invalid statement Handle or parameter index, or + * SQL error. + */ +native SQL_BindParamString(Handle:statement, param, const String:value[], bool:copy); + +/** + * Executes a prepared statement. All parameters must be bound beforehand. + * + * @param statement A statement (prepared query) Handle. + * @return True on success, false on failure. + * @error Invalid statement Handle. + */ +native bool:SQL_Execute(Handle:statement); +