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/*
This file is part of the Opie Project
=.
.=l.
.>+-=
_;:, .> :=|. This program is free software; you can
.> <`_, > . <= redistribute it and/or modify it under
:`=1 )Y*s>-.-- : the terms of the GNU Library General Public
.="- .-=="i, .._ License as published by the Free Software
- . .-<_> .<> Foundation; either version 2 of the License,
._= =} : or (at your option) any later version.
.%`+i> _;_.
.i_,=:_. -<s. 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
..}^=.= = ; Library General Public License for more
++= -. .` .: details.
: = ...= . :.=-
-. .:....=;==+<; You should have received a copy of the GNU
-_. . . )=. = Library General Public License along with
-- :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "osqlquery.h"
#include "osqlitedriver.h"
#include <opie2/odebug.h>
#include <stdlib.h>
#include <stdio.h>
namespace Opie {
namespace DB {
namespace Internal {
namespace {
struct Query {
OSQLError::ValueList errors;
OSQLResultItem::ValueList items;
OSQLiteDriver *driver;
};
}
OSQLiteDriver::OSQLiteDriver( QLibrary *lib )
: OSQLDriver( lib )
{
m_sqlite = 0l;
}
OSQLiteDriver::~OSQLiteDriver() {
close();
}
QString OSQLiteDriver::id()const {
return QString::fromLatin1("SQLite");
}
void OSQLiteDriver::setUserName( const QString& ) {}
void OSQLiteDriver::setPassword( const QString& ) {}
void OSQLiteDriver::setUrl( const QString& url ) {
m_url = url;
}
void OSQLiteDriver::setOptions( const QStringList& ) {
}
/*
* Functions to patch a regex search into sqlite
*/
int sqliteRlikeCompare(const char *zPattern, const char *zString, sqregex *reg){
int res;
if (reg->regex_raw == NULL || (strcmp (zPattern, reg->regex_raw) != 0)){
if (reg->regex_raw != NULL) {
free(reg->regex_raw);
regfree(®->regex_c);
}
reg->regex_raw = (char *)malloc(strlen(zPattern)+1);
strncpy(reg->regex_raw, zPattern, strlen(zPattern)+1);
res = regcomp(®->regex_c, zPattern, REG_EXTENDED);
if ( res != 0 ) {
printf("Regcomp failed with code %u on string %s\n",res,zPattern);
free(reg->regex_raw);
reg->regex_raw=NULL;
return 0;
}
}
res = (regexec(®->regex_c, zString, 0, NULL, 0)==0);
return res;
}
void rlikeFunc( sqlite3_context* context, int count, sqlite3_value** values ){
const unsigned char* argv0 = sqlite3_value_text( values[0] );
const unsigned char* argv1 = sqlite3_value_text( values[1] );
if( count < 2 || argv0 == 0 || argv1 == 0 ){
qWarning( "One of arguments Null!!\n" );
return;
}
sqlite3_result_int(context, sqliteRlikeCompare((const char*)argv0,
(const char*)argv1,
(sqregex *) sqlite3_user_data( context ) ));
}
/*
* try to open a db specified via setUrl
* and options
*/
bool OSQLiteDriver::open() {
odebug << "OSQLiteDriver::open: about to open" << oendl;
int error = sqlite3_open( m_url.utf8(),
&m_sqlite );
/* failed to open */
if ( error != SQLITE_OK ) {
// FIXME set the last error
owarn << "OSQLiteDriver::open: " << error << "" << oendl;
sqlite3_close( m_sqlite );
return false;
}
if ( sqlite3_create_function( m_sqlite, "rlike", 2, SQLITE_UTF8, &sqreg, rlikeFunc, NULL, NULL ) != SQLITE_OK ){
odebug << "Unable to create user defined function!" << oendl;
return false;
}
sqreg.regex_raw = NULL;
return true;
}
/* close the db
* sqlite closes them without
* telling failure or success
*/
bool OSQLiteDriver::close() {
if ( m_sqlite ){
sqlite3_close( m_sqlite );
m_sqlite=0l;
}
if ( sqreg.regex_raw != NULL){
odebug << "Freeing regex on close" << oendl;
free( sqreg.regex_raw );
sqreg.regex_raw = NULL;
regfree( &sqreg.regex_c );
}
return true;
}
/* Query */
OSQLResult OSQLiteDriver::query( OSQLQuery* qu) {
if ( !m_sqlite ) {
// FIXME set error code
OSQLResult result( OSQLResult::Failure );
return result;
}
Query query;
query.driver = this;
char *err;
/* SQLITE_OK 0 if return code > 0 == failure */
if ( sqlite3_exec( m_sqlite, qu->query().utf8(), &call_back, &query, &err ) > SQLITE_OK ) {
owarn << "OSQLiteDriver::query: Error while executing " << err << "" << oendl;
free( err );
// FixMe Errors
}
OSQLResult result(OSQLResult::Success,
query.items,
query.errors );
return result;
}
OSQLTable::ValueList OSQLiteDriver::tables() const {
return OSQLTable::ValueList();
}
OSQLError OSQLiteDriver::lastError() {
OSQLError error;
return error;
};
/* handle a callback add the row to the global
* OSQLResultItem
*/
int OSQLiteDriver::handleCallBack( int, char**, char** ) {
return 0;
}
/* callback_handler add the values to the list*/
int OSQLiteDriver::call_back( void* voi, int argc,
char** argv, char** columns ) {
Query* qu = (Query*)voi;
//copy them over to a OSQLResultItem
QMap<QString, QString> tableString;
QMap<int, QString> tableInt;
for (int i = 0; i < argc; i++ ) {
tableInt.insert( i, QString::fromUtf8( argv[i] ) );
tableString.insert( QString::fromUtf8( columns[i] ),
QString::fromUtf8( argv[i] ) );
}
OSQLResultItem item( tableString, tableInt );
qu->items.append( item );
return ((Query*)voi)->driver->handleCallBack( argc,
argv,
columns );
}
}}} // namespace OPIE::DB::Internal
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