+++ /dev/null
-/*****************************************************************************
- * sqlite.c: An SQLite3 wrapper for VLC
- *****************************************************************************
- * Copyright (C) 2008-2009 the VideoLAN team
- * $Id$
- *
- * Authors: Antoine Lejeune <phytos@videolan.org>
- * Jean-Philippe André <jpeg@videolan.org>
- * Rémi Duraffort <ivoire@videolan.org>
- * Adrien Maglo <magsoft@videolan.org>
- * Srikanth Raju <srikiraju@gmail.com>
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_sql.h>
-#include <vlc_plugin.h>
-
-#include <sqlite3.h>
-#include <assert.h>
-
-
-/*****************************************************************************
- * Private structures
- *****************************************************************************/
-struct sql_sys_t
-{
- sqlite3 *db; /**< Database connection. */
- vlc_mutex_t lock; /**< SQLite mutex. Threads are evil here. */
- vlc_mutex_t trans_lock; /**< Mutex for running transactions */
-};
-
-struct sql_stmt_t
-{
- sqlite3_stmt* p_sqlitestmt;
-};
-
-
-/*****************************************************************************
- * Headers
- *****************************************************************************/
-static int load ( vlc_object_t * );
-static void unload ( vlc_object_t * );
-
-static int OpenDatabase( sql_t * );
-static int CloseDatabase (sql_t * );
-static int QueryCallback( sql_t * p_sql,
- const char * query,
- sql_query_callback_t callback,
- void *arg ); // 1st argument to callback
-static int Query( sql_t * p_sql,
- const char * query,
- char *** result,
- int * nrow,
- int * ncol );
-static int GetTables( sql_t * p_sql,
- char *** result );
-static void FreeResult( sql_t * p_sql,
- char **pp_result );
-static char* VMSprintf( const char* psz_fmt,
- va_list args );
-static int BeginTransaction( sql_t* p_sql );
-static int CommitTransaction( sql_t* p_sql );
-static void RollbackTransaction( sql_t* p_sql );
-static sql_stmt_t* PrepareStatement( sql_t* p_sql,
- const char* psz_fmt,
- int i_length );
-static int BindValues( sql_t* p_sql,
- sql_stmt_t* p_stmt,
- int i_pos,
- unsigned int i_type,
- const sql_value_t* p_value );
-static int StatementStep( sql_t* p_sql,
- sql_stmt_t* p_stmt );
-static int StatementReset( sql_t* p_sql,
- sql_stmt_t* p_stmt );
-static int StatementFinalize( sql_t* p_sql,
- sql_stmt_t* p_stmt );
-static int GetColumnFromStatement( sql_t* p_sql,
- sql_stmt_t* p_stmt,
- int i_col,
- int type,
- sql_value_t *p_res );
-static int GetColumnTypeFromStatement( sql_t* p_sql,
- sql_stmt_t* p_stmt,
- int i_col,
- int* pi_type );
-static int GetColumnSize( sql_t* p_sql,
- sql_stmt_t* p_stmt,
- int i_col );
-
-/*****************************************************************************
- * Module description
- *****************************************************************************/
-vlc_module_begin()
- set_shortname( "SQLite" )
- set_description( _("SQLite database module") )
- set_capability( "sql", 1 )
- set_callbacks( load, unload )
- set_category( CAT_ADVANCED )
-vlc_module_end()
-
-
-/**
- * @brief Load module
- * @param obj Parent object
- * @return VLC_SUCCESS or VLC_ENOMEM
- */
-static int load( vlc_object_t *p_this )
-{
- sql_t *p_sql = (sql_t *) p_this;
-
- /* Initialize sys_t */
- p_sql->p_sys = calloc( 1, sizeof( *p_sql->p_sys ) );
- if( !p_sql->p_sys )
- return VLC_ENOMEM;
-
- vlc_mutex_init( &p_sql->p_sys->lock );
- vlc_mutex_init( &p_sql->p_sys->trans_lock );
-
- /* Open Database */
- if( OpenDatabase( p_sql ) == VLC_SUCCESS )
- msg_Dbg( p_sql, "sqlite module loaded" );
- else
- {
- free( p_sql->p_sys );
- vlc_mutex_destroy( &p_sql->p_sys->lock );
- vlc_mutex_destroy( &p_sql->p_sys->trans_lock );
- return VLC_EGENERIC;
- }
-
- p_sql->pf_query_callback = QueryCallback;
- p_sql->pf_get_tables = GetTables;
- p_sql->pf_query = Query;
- p_sql->pf_free = FreeResult;
- p_sql->pf_vmprintf = VMSprintf;
- p_sql->pf_begin = BeginTransaction;
- p_sql->pf_commit = CommitTransaction;
- p_sql->pf_rollback = RollbackTransaction;
- p_sql->pf_prepare = PrepareStatement;
- p_sql->pf_bind = BindValues;
- p_sql->pf_run = StatementStep;
- p_sql->pf_reset = StatementReset;
- p_sql->pf_finalize = StatementFinalize;
- p_sql->pf_gettype = GetColumnTypeFromStatement;
- p_sql->pf_getcolumn = GetColumnFromStatement;
- p_sql->pf_getcolumnsize = GetColumnSize;
-
- return VLC_SUCCESS;
-}
-
-/**
- * @brief Unload module
- * @param obj This sql_t object
- * @return Nothing
- */
-static void unload( vlc_object_t *p_this )
-{
- sql_t *p_sql = (sql_t *)p_this;
-
- CloseDatabase( p_sql );
- vlc_mutex_destroy( &p_sql->p_sys->lock );
- vlc_mutex_destroy( &p_sql->p_sys->trans_lock );
- free( p_sql->p_sys );
-}
-
-/**
- * @brief Sqlite Busy handler
- * @param p_data sql_t object
- * @param i_times Number of times busy handler has been invoked
- */
-static int vlc_sqlite_busy_handler( void* p_data, int i_times )
-{
- if( i_times >= 10 )
- {
- msg_Warn( (sql_t*) p_data, "Wait limit exceeded in SQLITE_BUSY handler" );
- return 0;
- }
- msleep( 2000000 );
- return 1;
-}
-
-/**
- * @brief Open current database
- * @param p_sql This sql_t object
- * @return VLC_SUCCESS or VLC_EGENERIC
- * @note p_sql->psz_host is required
- */
-static int OpenDatabase( sql_t *p_sql )
-{
- assert( p_sql->psz_host && *p_sql->psz_host );
-
- if( sqlite3_threadsafe() == 0 )
- {
- msg_Err( p_sql, "Sqlite library on your system is not threadsafe" );
- return VLC_EGENERIC;
- }
- if( sqlite3_open( p_sql->psz_host, &p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Err( p_sql, "Can't open database : %s", p_sql->psz_host );
- msg_Err( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- return VLC_EGENERIC;
- }
- if( sqlite3_busy_timeout( p_sql->p_sys->db, 30000 ) != SQLITE_OK )
- {
- msg_Err( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- return VLC_EGENERIC;
- }
- if( sqlite3_busy_handler( p_sql->p_sys->db, vlc_sqlite_busy_handler, p_sql )
- != SQLITE_OK )
- {
- msg_Err( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- return VLC_EGENERIC;
- }
-
- return VLC_SUCCESS;
-}
-
-/**
- * @brief Close current database
- * @param p_sql This sql_t object
- * @return VLC_SUCCESS
- * You have to set and open current database first
- */
-static int CloseDatabase( sql_t *p_sql )
-{
- assert( p_sql->p_sys->db );
-
- /* Close all prepared statements */
- sqlite3_stmt* p_stmt;
- while( ( p_stmt = sqlite3_next_stmt( p_sql->p_sys->db, NULL ) ) != NULL )
- {
- if( sqlite3_finalize( p_stmt ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- }
- }
-
- /* Close database */
- /* TODO: We've closed all open prepared statements
- * Perhaps sqlite3_close can still fail? */
- sqlite3_close( p_sql->p_sys->db );
- p_sql->p_sys->db = NULL;
-
- return VLC_SUCCESS;
-}
-
-/**
- * @brief SQL Query with callback
- * @param p_sql This sql_t object
- * @param query SQL query
- * @param callback Callback function to receive results row by row
- * @param arg Argument to pass to callback
- * @return VLC_SUCCESS or an error code
- * You have to set and open current database first
- */
-static int QueryCallback( sql_t * p_sql,
- const char * query,
- sql_query_callback_t callback,
- void *arg )
-{
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->lock );
- assert( p_sql->p_sys->db );
-#ifndef NDEBUG
- msg_Dbg( p_sql, "QueryCallback: %s", query );
-#endif
- sqlite3_exec( p_sql->p_sys->db, query, callback, arg, NULL );
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
-
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Direct SQL Query
- * @param p_sql This sql_t object
- * @param query SQL query
- * @param result Return value : Array of results
- * @param nrow Return value : Row number
- * @param ncol Return value : Column number
- * @return VLC_SUCCESS or an error code
- * You have to set and open current database first
- * @todo Handle transaction closing due to errors in sql query
- */
-static int Query( sql_t * p_sql,
- const char * query,
- char *** result,
- int * nrow,
- int * ncol )
-{
- assert( p_sql->p_sys->db );
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->lock );
-
-#ifndef NDEBUG
- msg_Dbg( p_sql, "Query: %s", query );
-#endif
- sqlite3_get_table( p_sql->p_sys->db, query, result, nrow, ncol, NULL );
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
-
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Get tables in database
- * @param p_sql This sql_t object
- * @param result SQL query result
- * @return Number of elements
- * You have to set and open current database first
- */
-static int GetTables( sql_t * p_sql,
- char *** result )
-{
- int nrow, i_num = -1;
-
- vlc_mutex_lock( &p_sql->p_sys->lock );
-
- assert( p_sql->p_sys->db );
-
- sqlite3_get_table( p_sql->p_sys->db, "SELECT * FROM sqlite_master;",
- result, &nrow, &i_num, NULL );
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_num;
-}
-
-/**
- * @brief Free SQL request's result
- * @param p_sql This SQL object.
- * @param ppsz_result SQL result to free
- */
-static void FreeResult( sql_t * p_sql, char **ppsz_result )
-{
- VLC_UNUSED( p_sql );
- if( ppsz_result != NULL )
- sqlite3_free_table( ppsz_result );
-}
-
-/**
- * @brief vmprintf replacement for SQLite.
- * @param psz_fmt Format string
- * @param args va_list of arguments
- * This function implements the formats %q, %Q and %z.
- */
-static char* VMSprintf( const char* psz_fmt, va_list args )
-{
- char *psz = sqlite3_vmprintf( psz_fmt, args );
- char *ret = strdup( psz );
- sqlite3_free( psz );
- return ret;
-}
-
-/**
- * @brief Starts a Transaction and waits if necessary
- * @param p_sql The SQL object
- * @note This function locks the transactions on the database.
- * Within the period of the transaction, only the calling thread may
- * execute sql statements provided all threads use these transaction fns.
- */
-static int BeginTransaction( sql_t* p_sql )
-{
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->trans_lock );
- vlc_mutex_lock( &p_sql->p_sys->lock );
- assert( p_sql->p_sys->db );
-
- sqlite3_exec( p_sql->p_sys->db, "BEGIN;", NULL, NULL, NULL );
-#ifndef NDEBUG
- msg_Dbg( p_sql, "Transaction Query: BEGIN;" );
-#endif
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- vlc_mutex_unlock( &p_sql->p_sys->trans_lock );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Commit a transaction
- * @param p_sql The SQL object
- * @note This function unlocks the transactions on the database
- * Only the calling thread of "BeginTransaction" is allowed to call this method
- * If the commit fails, the transaction lock is still held by the thread
- * and this function may be retried or RollbackTransaction can be called
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int CommitTransaction( sql_t* p_sql )
-{
- int i_ret = VLC_SUCCESS;
- assert( p_sql->p_sys->db );
- vlc_mutex_lock( &p_sql->p_sys->lock );
-
- /** This turns the auto commit on. */
- sqlite3_exec( p_sql->p_sys->db, "COMMIT;", NULL, NULL, NULL );
-#ifndef NDEBUG
- msg_Dbg( p_sql, "Transaction Query: COMMIT;" );
-#endif
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
- else
- vlc_mutex_unlock( &p_sql->p_sys->trans_lock );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Rollback a transaction, in case of failure
- * @param p_sql The SQL object
- * @return VLC_SUCCESS or VLC_EGENERIC
- * @note This function unlocks the transactions on the database
- * Only the calling thread of "BeginTransaction" is allowed to call this method
- * If failed, if a statement in the transaction failed, it means that
- * the transaction was automatically rolled back
- * If failed otherwise, the engine is busy executing some queries and you must
- * try again
- */
-static void RollbackTransaction( sql_t* p_sql )
-{
- assert( p_sql->p_sys->db );
- vlc_mutex_lock( &p_sql->p_sys->lock );
-
- sqlite3_exec( p_sql->p_sys->db, "ROLLBACK;", NULL, NULL, NULL );
-#ifndef NDEBUG
- msg_Dbg( p_sql, "Transaction Query: ROLLBACK;" );
-#endif
- if( sqlite3_errcode( p_sql->p_sys->db ) != SQLITE_OK )
- {
- msg_Err( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- }
- vlc_mutex_unlock( &p_sql->p_sys->trans_lock );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
-}
-
-/**
- * Prepare an sqlite statement
- * @return statement object or NULL in case of failure
- */
-static sql_stmt_t* PrepareStatement( sql_t* p_sql, const char* psz_fmt, int i_length )
-{
- assert( p_sql->p_sys->db );
- sql_stmt_t* p_stmt;
- p_stmt = calloc( 1, sizeof( *p_stmt ) );
- if( p_stmt == NULL )
- return NULL;
- vlc_mutex_lock( &p_sql->p_sys->lock );
- if( sqlite3_prepare_v2( p_sql->p_sys->db, psz_fmt, i_length,
- &p_stmt->p_sqlitestmt, NULL ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- free( p_stmt );
- return NULL;
- }
-
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return p_stmt;
-}
-
-/**
- * @brief Bind arguments to a sql_stmt_t object
- * @param p_sql The SQL object
- * @param p_stmt Statement Object
- * @param i_pos Position at which the parameter should be bound
- * @param i_type Data type of the value
- * @param p_value Value to be bound
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int BindValues( sql_t* p_sql, sql_stmt_t* p_stmt,
- int i_pos, unsigned int i_type, const sql_value_t* p_value )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- vlc_mutex_lock( &p_sql->p_sys->lock );
- int i_ret, i_vlc_ret = VLC_SUCCESS;
- switch( i_type )
- {
- case SQL_INT:
- i_ret = sqlite3_bind_int( p_stmt->p_sqlitestmt, i_pos, p_value->value.i );
- break;
- case SQL_DOUBLE:
- i_ret = sqlite3_bind_double( p_stmt->p_sqlitestmt, i_pos, p_value->value.dbl );
- break;
- case SQL_TEXT:
- i_ret = sqlite3_bind_text( p_stmt->p_sqlitestmt, i_pos, p_value->value.psz, p_value->length, NULL );
- break;
- case SQL_BLOB:
- i_ret = sqlite3_bind_blob( p_stmt->p_sqlitestmt, i_pos, p_value->value.ptr, p_value->length, NULL );
- break;
- case SQL_NULL:
- i_ret = sqlite3_bind_null( p_stmt->p_sqlitestmt, i_pos );
- break;
- default:
- msg_Warn( p_sql, "Trying to bind invalid type of value %d", i_type );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return VLC_EGENERIC;
- }
- if( i_ret != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_vlc_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_vlc_ret;
-}
-
-/**
- * @brief Run the SQL statement. If the statement fetches data, then only
- * one row of the data is fetched at a time. Run this function again to
- * fetch the next row.
- * @param p_sql The SQL object
- * @param p_stmt The statement
- * @return VLC_SQL_DONE if done fetching all rows or there are no rows to fetch
- * VLC_SQL_ROW if a row was fetched for this statement.
- * VLC_EGENERIC if this function failed
- */
-static int StatementStep( sql_t* p_sql, sql_stmt_t* p_stmt )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- vlc_mutex_lock( &p_sql->p_sys->lock );
- int i_sqlret = sqlite3_step( p_stmt->p_sqlitestmt );
- int i_ret = VLC_EGENERIC;
- if( i_sqlret == SQLITE_ROW )
- i_ret = VLC_SQL_ROW;
- else if( i_ret == SQLITE_DONE )
- i_ret = VLC_SQL_DONE;
- else
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Reset the SQL statement. Resetting the statement will unbind all
- * the values that were bound on this statement
- * @param p_sql The SQL object
- * @param p_stmt The sql statement object
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int StatementReset( sql_t* p_sql, sql_stmt_t* p_stmt )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->lock );
- if( sqlite3_reset( p_stmt->p_sqlitestmt ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Destroy the sql statement object. This will free memory.
- * @param p_sql The SQL object
- * @param p_stmt The statement object
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int StatementFinalize( sql_t* p_sql, sql_stmt_t* p_stmt )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->lock );
- if( sqlite3_finalize( p_stmt->p_sqlitestmt ) != SQLITE_OK )
- {
- msg_Warn( p_sql, "sqlite3 error: %d: %s",
- sqlite3_errcode( p_sql->p_sys->db ),
- sqlite3_errmsg( p_sql->p_sys->db ) );
- i_ret = VLC_EGENERIC;
- }
- free( p_stmt );
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Get the column data
- * @param p_sql The SQL object
- * @param p_stmt The statement object
- * @param i_col The column number
- * @param type Datatype of result
- * @param p_res The structure which contains the value of the result
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int GetColumnFromStatement( sql_t* p_sql, sql_stmt_t* p_stmt, int i_col,
- int type, sql_value_t *p_res )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- int i_ret = VLC_SUCCESS;
- vlc_mutex_lock( &p_sql->p_sys->lock );
- const unsigned char* psz;
- const void* ptr;
- int size;
- switch( type )
- {
- case SQL_INT:
- p_res->value.i = sqlite3_column_int( p_stmt->p_sqlitestmt, i_col );
- break;
- case SQL_DOUBLE:
- p_res->value.dbl = sqlite3_column_double( p_stmt->p_sqlitestmt, i_col );
- break;
- case SQL_TEXT:
- psz = sqlite3_column_text( p_stmt->p_sqlitestmt, i_col );
- if( psz )
- p_res->value.psz = strdup( (const char* ) psz );
- break;
- case SQL_BLOB:
- ptr = sqlite3_column_blob( p_stmt->p_sqlitestmt, i_col );
- size = sqlite3_column_bytes( p_stmt->p_sqlitestmt, i_col );
- if( ptr )
- {
- p_res->value.ptr = malloc( size );
- p_res->length = size;
- if( p_res->value.ptr )
- memcpy( p_res->value.ptr, ptr, size );
- else
- i_ret = VLC_ENOMEM;
- }
- break;
- case SQL_NULL:
- default:
- msg_Warn( p_sql, "Trying to bind invalid type of value %d", type );
- i_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Get the datatype of the result of the column
- * @param p_sql The SQL object
- * @param p_stmt The sql statement object
- * @param i_col The column
- * @param pi_type pointer to datatype of the given column
- * @return VLC_SUCCESS or VLC_EGENERIC
- */
-static int GetColumnTypeFromStatement( sql_t* p_sql, sql_stmt_t* p_stmt, int i_col,
- int* pi_type )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- assert( pi_type );
- vlc_mutex_lock( &p_sql->p_sys->lock );
- int i_ret = VLC_SUCCESS;
- int i_sqlret = sqlite3_column_type( p_stmt->p_sqlitestmt, i_col );
- switch( i_sqlret )
- {
- case SQLITE_INTEGER:
- *pi_type = SQL_INT;
- break;
- case SQLITE_FLOAT:
- *pi_type= SQL_DOUBLE;
- break;
- case SQLITE_TEXT:
- *pi_type = SQL_TEXT;
- break;
- case SQLITE_BLOB:
- *pi_type = SQL_BLOB;
- break;
- case SQLITE_NULL:
- *pi_type = SQL_NULL;
- break;
- default:
- i_ret = VLC_EGENERIC;
- }
- vlc_mutex_unlock( &p_sql->p_sys->lock );
- return i_ret;
-}
-
-/**
- * @brief Get the size of the column in bytes
- * @param p_sql The SQL object
- * @param p_stmt The sql statement object
- * @param i_col The column
- * @return Size of the column in bytes, undefined for invalid columns
- */
-static int GetColumnSize( sql_t* p_sql, sql_stmt_t* p_stmt, int i_col )
-{
- assert( p_sql->p_sys->db );
- assert( p_stmt->p_sqlitestmt );
- return sqlite3_column_bytes( p_stmt->p_sqlitestmt, i_col );
-}
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