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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2005-06-05
* Description : TQSlite DB interface.
*
* Copyright (C) 2005 by Renchi Raju <renchi@pooh.tam.uiuc.edu>
*
* 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, 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.
*
* ============================================================ */
#ifdef HAVE_CONFIG_H
#include "config.h" // Needed for NFS_HACK
#endif
// TQt includes.
#include <tqstringlist.h>
#include <tqdir.h>
#include <tqfile.h>
// KDE includes.
#include <tdeio/global.h>
#include <kdebug.h>
// SQlite includes.
#include "sqlite3.h"
// Local includes.
#include "sqlitedb.h"
SqliteDB::SqliteDB()
{
m_db = 0;
}
SqliteDB::~SqliteDB()
{
closeDB();
}
void SqliteDB::openDB(const TQString& directory)
{
if (m_db)
{
closeDB();
}
TQString dbPath = directory + "/digikam3.db";
#ifdef NFS_HACK
dbPath = TQDir::homeDirPath() + "/.trinity/share/apps/digikam/" +
TDEIO::encodeFileName(TQDir::cleanDirPath(dbPath));
#endif
sqlite3_open(TQFile::encodeName(dbPath), &m_db);
if (m_db == 0)
{
kdWarning() << "Cannot open database: "
<< sqlite3_errmsg(m_db)
<< endl;
}
}
void SqliteDB::closeDB()
{
if (m_db)
{
sqlite3_close(m_db);
m_db = 0;
}
}
bool SqliteDB::execSql(const TQString& sql, TQStringList* const values,
TQString* errMsg, bool debug ) const
{
if ( debug )
kdDebug() << "SQL-query: " << sql << endl;
if ( !m_db )
{
kdWarning() << k_funcinfo << "SQLite pointer == NULL"
<< endl;
if (errMsg)
{
*errMsg = TQString::fromLatin1("SQLite database not open");
}
return false;
}
const char* tail;
sqlite3_stmt* stmt;
int error;
//compile SQL program to virtual machine
error = sqlite3_prepare(m_db, sql.utf8(), -1, &stmt, &tail);
if ( error != SQLITE_OK )
{
kdWarning() << k_funcinfo
<< "sqlite_compile error: "
<< sqlite3_errmsg(m_db)
<< " on query: "
<< sql << endl;
if (errMsg)
{
*errMsg = TQString::fromLatin1("sqlite_compile error: ") +
TQString::fromLatin1(sqlite3_errmsg(m_db)) +
TQString::fromLatin1(" on query: ") +
sql;
}
return false;
}
int cols = sqlite3_column_count(stmt);
while ( true )
{
error = sqlite3_step( stmt );
if ( error == SQLITE_DONE || error == SQLITE_ERROR )
break;
//iterate over columns
for ( int i = 0; values && i < cols; i++ )
{
*values << TQString::fromUtf8( (const char*)sqlite3_column_text( stmt, i ) );
}
}
sqlite3_finalize( stmt );
if ( error != SQLITE_DONE )
{
kdWarning() << "sqlite_step error: "
<< sqlite3_errmsg( m_db )
<< " on query: "
<< sql << endl;
if (errMsg)
{
*errMsg = TQString::fromLatin1("sqlite_step error: ") +
TQString::fromLatin1(sqlite3_errmsg(m_db)) +
TQString::fromLatin1(" on query: ") +
sql;
}
return false;
}
return true;
}
void SqliteDB::setSetting( const TQString& keyword, const TQString& value )
{
execSql( TQString("REPLACE into Settings VALUES ('%1','%2');")
.arg( escapeString(keyword) )
.arg( escapeString(value) ));
}
TQString SqliteDB::getSetting( const TQString& keyword )
{
TQStringList values;
execSql( TQString("SELECT value FROM Settings "
"WHERE keyword='%1';")
.arg(escapeString(keyword)),
&values );
if (values.isEmpty())
return TQString();
else
return values[0];
}
extern TQString escapeString(const TQString& str)
{
TQString st(str);
st.replace( "'", "''" );
return st;
}
TQ_LLONG SqliteDB::lastInsertedRow() const
{
return sqlite3_last_insert_rowid(m_db);
}
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