mirror of
https://github.com/sqlitebrowser/sqlitebrowser.git
synced 2026-01-20 02:50:46 -06:00
788 lines
20 KiB
C++
788 lines
20 KiB
C++
#include "sqlitedb.h"
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#include "sqlbrowser_util.h"
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#include <stdlib.h>
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#include <qregexp.h>
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#include <qimage.h>
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#include <qfile.h>
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#include <q3filedialog.h>
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#include <qmessagebox.h>
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#include <QProgressDialog>
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void DBBrowserTable::addField(int order, const QString& wfield,const QString& wtype)
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{
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fldmap[order] = DBBrowserField(wfield,wtype);
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}
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bool DBBrowserDB::isOpen ( )
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{
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return _db!=0;
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}
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void DBBrowserDB::setDirty(bool dirtyval)
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{
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if ((dirty==false)&&(dirtyval==true))
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{
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setRestorePoint();
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}
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dirty = dirtyval;
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if (logWin)
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{
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logWin->msgDBDirtyState(dirty);
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}
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}
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void DBBrowserDB::setDirtyDirect(bool dirtyval)
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{
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dirty = dirtyval;
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if (logWin)
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{
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logWin->msgDBDirtyState(dirty);
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}
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}
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bool DBBrowserDB::getDirty()
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{
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return dirty;
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}
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void DBBrowserDB::setEncoding( int encoding )
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{
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curEncoding = encoding;
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}
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void DBBrowserDB::setDefaultNewData( const QString & data )
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{
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curNewData = data;
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}
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char * DBBrowserDB::GetEncodedQStringAsPointer( const QString & input)
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{
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if (curEncoding==kEncodingUTF8) return (char *) input.utf8().constData();
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if (curEncoding==kEncodingLatin1) return (char *) input.latin1();
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return (char *) input.constData();
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}
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QString DBBrowserDB::GetEncodedQString( const QString & input)
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{
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if (curEncoding==kEncodingUTF8) return input.utf8();
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if (curEncoding==kEncodingLatin1) return input.latin1();
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return input;
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}
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QString DBBrowserDB::GetDecodedQString( const QString & input)
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{
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if (curEncoding==kEncodingUTF8) return QString::fromUtf8(input);
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if (curEncoding==kEncodingLatin1) return QString::fromLatin1(input);
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return input;
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}
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bool DBBrowserDB::open ( const QString & db)
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{
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bool ok=false;
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int err;
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if (isOpen()) close();
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//try to verify the SQLite version 3 file header
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QFile dbfile(db);
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if ( dbfile.open( QIODevice::ReadOnly ) ) {
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char buffer[16+1];
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dbfile.readLine(buffer, 16);
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QString contents = QString(buffer);
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dbfile.close();
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if (!contents.startsWith("SQLite format 3")) {
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lastErrorMessage = QString("File is not a SQLite 3 database");
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return false;
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}
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} else {
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lastErrorMessage = QString("File could not be read");
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return false;
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}
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lastErrorMessage = QString("no error");
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err = sqlite3_open_v2(GetEncodedQString(db), &_db, SQLITE_OPEN_READWRITE, NULL);
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if ( err ) {
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lastErrorMessage = sqlite3_errmsg(_db);
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sqlite3_close(_db);
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_db = 0;
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return false;
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}
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if (_db){
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if (SQLITE_OK==sqlite3_exec(_db,"PRAGMA empty_result_callbacks = ON;",
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NULL,NULL,NULL)){
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if (SQLITE_OK==sqlite3_exec(_db,"PRAGMA show_datatypes = ON;",
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NULL,NULL,NULL)){
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ok=true;
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setDirty(false);
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}
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curDBFilename = db;
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}
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}
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return ok;
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}
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bool DBBrowserDB::setRestorePoint()
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{
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if (!isOpen()) return false;
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if (_db){
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sqlite3_exec(_db,"SAVEPOINT RESTOREPOINT;",
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NULL,NULL,NULL);
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setDirty(false);
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}
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return true;
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}
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bool DBBrowserDB::save()
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{
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if (!isOpen()) return false;
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if (_db){
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sqlite3_exec(_db,"RELEASE RESTOREPOINT;",
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NULL,NULL,NULL);
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setDirty(false);
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}
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return true;
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}
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bool DBBrowserDB::revert()
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{
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if (!isOpen()) return false;
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if (_db){
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sqlite3_exec(_db,"ROLLBACK TO SAVEPOINT RESTOREPOINT;",
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NULL,NULL,NULL);
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setDirty(false);
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}
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return true;
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}
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bool DBBrowserDB::create ( const QString & db)
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{
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bool ok=false;
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if (isOpen()) close();
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lastErrorMessage = QString("no error");
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if( sqlite3_open(GetEncodedQString(db), &_db) != SQLITE_OK ){
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lastErrorMessage = sqlite3_errmsg(_db);
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sqlite3_close(_db);
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_db = 0;
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return false;
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}
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if (_db){
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if (SQLITE_OK==sqlite3_exec(_db,"PRAGMA empty_result_callbacks = ON;",
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NULL,NULL,NULL)){
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if (SQLITE_OK==sqlite3_exec(_db,"PRAGMA show_datatypes = ON;",
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NULL,NULL,NULL)){
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ok=true;
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setDirty(false);
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}
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curDBFilename = db;
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}
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}
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return ok;
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}
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void DBBrowserDB::close (){
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if (_db)
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{
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if (getDirty())
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{
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QString msg = "Do you want to save the changes made to the database file ";
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msg.append(curDBFilename);
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msg.append(" ?");
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if (QMessageBox::question( 0, applicationName ,msg, QMessageBox::Yes, QMessageBox::No)==QMessageBox::Yes)
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{
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save();
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} else {
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//not really necessary, I think... but will not hurt.
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revert();
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}
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}
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sqlite3_close(_db);
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}
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_db = 0;
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idxmap.clear();
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tbmap.clear();
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idmap.clear();
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browseRecs.clear();
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browseFields.clear();
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hasValidBrowseSet = false;
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}
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bool DBBrowserDB::compact ( )
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{
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char *errmsg;
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bool ok=false;
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if (!isOpen()) return false;
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if (_db){
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save();
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logSQL(QString("VACUUM;"), kLogMsg_App);
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if (SQLITE_OK==sqlite3_exec(_db,"VACUUM;",
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NULL,NULL,&errmsg)){
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ok=true;
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setDirty(false);
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}
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}
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if (!ok){
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lastErrorMessage = QString(errmsg);
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return false;
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}else{
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return true;
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}
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}
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bool DBBrowserDB::reload( const QString & filename, int * lineErr)
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{
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/*to avoid a nested transaction error*/
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sqlite3_exec(_db,"COMMIT;", NULL,NULL,NULL);
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FILE * cfile = fopen((const char *) filename, (const char *) "r");
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load_database(_db, cfile, lineErr);
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fclose(cfile);
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setDirty(false);
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if ((*lineErr)!=0)
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{
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return false;
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}
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return true;
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}
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bool DBBrowserDB::dump( const QString & filename)
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{
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FILE * cfile = fopen((const char *) filename, (const char *) "w");
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if (!cfile)
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{
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return false;
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}
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dump_database(_db, cfile);
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fclose(cfile);
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return true;
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}
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bool DBBrowserDB::executeSQL ( const QString & statement, bool dirtyDB, bool logsql)
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{
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char *errmsg;
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bool ok = false;
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if (!isOpen()) return false;
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if (_db){
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if (logsql) logSQL(statement, kLogMsg_App);
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if (dirtyDB) setDirty(true);
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if (SQLITE_OK==sqlite3_exec(_db,GetEncodedQString(statement),
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NULL,NULL,&errmsg)){
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ok=true;
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}
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}
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if (!ok){
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lastErrorMessage = QString(errmsg);
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return false;
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}
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return true;
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}
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bool DBBrowserDB::addRecord ( )
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{
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char *errmsg;
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if (!hasValidBrowseSet) return false;
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if (!isOpen()) return false;
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bool ok = false;
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int fields = browseFields.count();
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QString emptyvalue = curNewData;
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QString statement = "INSERT INTO ";
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statement.append(GetEncodedQString(curBrowseTableName));
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statement.append(" VALUES(");
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for ( int i=1; i<=fields; i++ ) {
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statement.append(emptyvalue);
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if (i<fields) statement.append(", ");
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}
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statement.append(");");
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lastErrorMessage = QString("no error");
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if (_db){
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logSQL(statement, kLogMsg_App);
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setDirty(true);
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if (SQLITE_OK==sqlite3_exec(_db,statement,NULL,NULL, &errmsg)){
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ok=true;
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//int newrowid = sqlite3_last_insert_rowid(_db);
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} else {
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lastErrorMessage = QString(errmsg);
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}
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}
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return ok;
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}
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bool DBBrowserDB::deleteRecord( int wrow)
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{
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char * errmsg;
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if (!hasValidBrowseSet) return false;
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if (!isOpen()) return false;
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bool ok = false;
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rowList tab = browseRecs;
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QStringList& rt = tab[wrow];
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QString& rowid = rt[0];
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lastErrorMessage = QString("no error");
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QString statement = "DELETE FROM ";
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statement.append(GetEncodedQString(curBrowseTableName));
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statement.append(" WHERE rowid=");
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statement.append(rowid);
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statement.append(";");
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if (_db){
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logSQL(statement, kLogMsg_App);
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setDirty(true);
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if (SQLITE_OK==sqlite3_exec(_db,GetEncodedQString(statement),
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NULL,NULL,&errmsg)){
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ok=true;
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} else {
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lastErrorMessage = QString(errmsg);
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}
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}
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return ok;
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}
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bool DBBrowserDB::updateRecord(int wrow, int wcol, const QString & wtext)
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{
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char * errmsg;
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if (!hasValidBrowseSet) return false;
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if (!isOpen()) return false;
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bool ok = false;
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lastErrorMessage = QString("no error");
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QStringList& rt = browseRecs[wrow];
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QString& rowid = rt[0];
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QString& cv = rt[wcol+1];//must account for rowid
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QString ct = browseFields.at(wcol);
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QString statement = "UPDATE ";
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statement.append(GetEncodedQString(curBrowseTableName));
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statement.append(" SET ");
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statement.append(GetEncodedQString(ct));
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statement.append("=");
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QString wenc = GetEncodedQString(wtext);
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char * formSQL = sqlite3_mprintf("%Q",(const char *) wenc);
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statement.append(formSQL);
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if (formSQL) sqlite3_free(formSQL);
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statement.append(" WHERE rowid=");
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statement.append(rowid);
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statement.append(";");
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if (_db){
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logSQL(statement, kLogMsg_App);
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setDirty(true);
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if (SQLITE_OK==sqlite3_exec(_db,statement,
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NULL,NULL,&errmsg)){
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ok=true;
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/*update local copy*/
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cv = wtext;
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} else {
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lastErrorMessage = QString(errmsg);
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}
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}
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return ok;
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}
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bool DBBrowserDB::browseTable( const QString & tablename )
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{
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QStringList testFields = getTableFields( tablename );
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if (testFields.count()>0) {//table exists
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getTableRecords( tablename );
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browseFields = testFields;
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hasValidBrowseSet = true;
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curBrowseTableName = tablename;
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} else {
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hasValidBrowseSet = false;
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curBrowseTableName = QString(" ");
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browseFields.clear();
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browseRecs.clear();
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idmap.clear();
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}
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return hasValidBrowseSet;
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}
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bool DBBrowserDB::createColumn( QString tablename, QString fieldname, QString fieldtype ){
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qDebug("create column");
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QString sql = QString("ALTER TABLE `%1` ADD COLUMN `%2` %3").arg(tablename).arg(fieldname).arg(fieldtype);
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qDebug(sql);
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return executeSQL(sql);
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}
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bool DBBrowserDB::renameTable(QString from_table, QString to_table){
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qDebug("renameTable column");
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return true;
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}
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void DBBrowserDB::getTableRecords( const QString & tablename )
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{
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sqlite3_stmt *vm;
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const char *tail;
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int ncol;
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QStringList r;
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// char *errmsg;
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int err=0;
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// int tabnum = 0;
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browseRecs.clear();
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idmap.clear();
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lastErrorMessage = QString("no error");
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QString statement = "SELECT rowid, * FROM ";
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statement.append( GetEncodedQString(tablename) );
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statement.append(" ORDER BY rowid; ");
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//qDebug(statement);
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logSQL(statement, kLogMsg_App);
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err=sqlite3_prepare(_db,statement,statement.length(),
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&vm, &tail);
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if (err == SQLITE_OK){
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int rownum = 0;
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while ( sqlite3_step(vm) == SQLITE_ROW ){
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r.clear();
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ncol = sqlite3_data_count(vm);
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for (int e=0; e<ncol; e++){
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char * strresult = 0;
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QString rv;
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strresult = (char *) sqlite3_column_text(vm, e);
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rv = QString(strresult);
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r << GetDecodedQString(rv);
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if (e==0){
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idmap.insert(rv.toInt(),rownum);
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rownum++;
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}
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}
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browseRecs.append(r);
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}
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sqlite3_finalize(vm);
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}else{
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lastErrorMessage = QString ("could not get fields");
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}
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}
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resultMap DBBrowserDB::getFindResults( const QString & wstatement)
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{
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sqlite3_stmt *vm;
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const char *tail;
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int ncol;
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// char *errmsg;
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int err=0;
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resultMap res;
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lastErrorMessage = QString("no error");
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QString encstatement = GetEncodedQString(wstatement);
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logSQL(encstatement, kLogMsg_App);
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err=sqlite3_prepare(_db,encstatement,encstatement.length(),
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&vm, &tail);
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if (err == SQLITE_OK){
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int rownum = 0;
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int recnum = 0;
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QString r;
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while ( sqlite3_step(vm) == SQLITE_ROW ){
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ncol = sqlite3_data_count(vm);
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for (int e=0; e<ncol; e++){
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char * strresult = 0;
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strresult = (char *) sqlite3_column_text(vm, e);
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r = QString(strresult);
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if (e==0){
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rownum = r.toInt();
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rowIdMap::iterator mit = idmap.find(rownum);
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recnum = *mit;
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}
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}
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res.insert(recnum, GetDecodedQString(r));
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}
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sqlite3_finalize(vm);
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}else{
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lastErrorMessage = QString(sqlite3_errmsg(_db));
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}
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return res;
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}
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QStringList DBBrowserDB::getTableNames()
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{
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tableMap::Iterator it;
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tableMap tmap = tbmap;
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QStringList res;
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for ( it = tmap.begin(); it != tmap.end(); ++it ) {
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res.append( it.data().getname() );
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}
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return res;
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}
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QStringList DBBrowserDB::getIndexNames()
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{
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indexMap::Iterator it;
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indexMap tmap = idxmap;
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QStringList res;
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for ( it = tmap.begin(); it != tmap.end(); ++it ) {
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res.append( it.data().getname() );
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}
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return res;
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}
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QStringList DBBrowserDB::getTableFields(const QString & tablename)
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{
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tableMap::Iterator it;
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tableMap tmap = tbmap;
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QStringList res;
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for ( it = tmap.begin(); it != tmap.end(); ++it ) {
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if (tablename.compare(it.data().getname())==0 ){
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fieldMap::Iterator fit;
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fieldMap fmap = it.data().fldmap;
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for ( fit = fmap.begin(); fit != fmap.end(); ++fit ) {
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res.append( fit.data().getname() );
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}
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}
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}
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return res;
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}
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QStringList DBBrowserDB::getTableTypes(const QString & tablename)
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{
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tableMap::Iterator it;
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tableMap tmap = tbmap;
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QStringList res;
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|
|
for ( it = tmap.begin(); it != tmap.end(); ++it ) {
|
|
if (tablename.compare(it.data().getname())==0 ){
|
|
fieldMap::Iterator fit;
|
|
fieldMap fmap = it.data().fldmap;
|
|
|
|
for ( fit = fmap.begin(); fit != fmap.end(); ++fit ) {
|
|
res.append( fit.data().gettype() );
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int DBBrowserDB::getRecordCount()
|
|
{
|
|
return browseRecs.count();
|
|
}
|
|
|
|
void DBBrowserDB::logSQL(QString statement, int msgtype)
|
|
{
|
|
if (logWin)
|
|
{
|
|
/*limit log message to a sensible size, this will truncate some binary messages*/
|
|
int loglimit = 300;
|
|
if ((statement.length() > loglimit)&&(msgtype==kLogMsg_App))
|
|
{
|
|
statement.truncate(32);
|
|
statement.append("... <string too wide to log, probably contains binary data> ...");
|
|
}
|
|
logWin->log(statement, msgtype);
|
|
}
|
|
}
|
|
|
|
|
|
void DBBrowserDB::updateSchema( )
|
|
{
|
|
// qDebug ("Getting list of tables");
|
|
sqlite3_stmt *vm;
|
|
const char *tail;
|
|
QStringList r;
|
|
int err=0;
|
|
QString num;
|
|
int idxnum =0;
|
|
int tabnum = 0;
|
|
|
|
idxmap.clear();
|
|
tbmap.clear();
|
|
|
|
lastErrorMessage = QString("no error");
|
|
QString statement = "SELECT name, sql "
|
|
"FROM sqlite_master "
|
|
"WHERE type='table' ;";
|
|
|
|
err=sqlite3_prepare(_db, (const char *) statement,statement.length(),
|
|
&vm, &tail);
|
|
if (err == SQLITE_OK){
|
|
logSQL(statement, kLogMsg_App);
|
|
while ( sqlite3_step(vm) == SQLITE_ROW ){
|
|
num.setNum(tabnum);
|
|
QString val1, val2;
|
|
val1 = QString((const char *) sqlite3_column_text(vm, 0));
|
|
val2 = QString((const char *) sqlite3_column_text(vm, 1));
|
|
tbmap[num] = DBBrowserTable(GetDecodedQString(val1), GetDecodedQString(val2));
|
|
tabnum++;
|
|
}
|
|
sqlite3_finalize(vm);
|
|
}else{
|
|
qDebug ("could not get list of tables: %d, %s",err,sqlite3_errmsg(_db));
|
|
}
|
|
|
|
//now get the field list for each table in tbmap
|
|
tableMap::Iterator it;
|
|
for ( it = tbmap.begin(); it != tbmap.end(); ++it ) {
|
|
statement = "PRAGMA TABLE_INFO(";
|
|
statement.append( (const char *) GetEncodedQString(it.data().getname()));
|
|
statement.append(");");
|
|
logSQL(statement, kLogMsg_App);
|
|
err=sqlite3_prepare(_db,statement,statement.length(),
|
|
&vm, &tail);
|
|
if (err == SQLITE_OK){
|
|
it.data(). fldmap.clear();
|
|
int e = 0;
|
|
while ( sqlite3_step(vm) == SQLITE_ROW ){
|
|
if (sqlite3_column_count(vm)==6) {
|
|
QString val1, val2;
|
|
int ispk= 0;
|
|
val1 = QString((const char *) sqlite3_column_text(vm, 1));
|
|
val2 = QString((const char *) sqlite3_column_text(vm, 2));
|
|
ispk = sqlite3_column_int(vm, 5);
|
|
if (ispk==1){
|
|
val2.append(QString(" PRIMARY KEY"));
|
|
}
|
|
it.data().addField(e,GetDecodedQString(val1),GetDecodedQString(val2));
|
|
e++;
|
|
}
|
|
}
|
|
sqlite3_finalize(vm);
|
|
} else{
|
|
lastErrorMessage = QString ("could not get types");
|
|
}
|
|
}
|
|
statement = "SELECT name, sql "
|
|
"FROM sqlite_master "
|
|
"WHERE type='index' ";
|
|
/*"ORDER BY name;"*/
|
|
//finally get indices
|
|
err=sqlite3_prepare(_db,statement,statement.length(),
|
|
&vm, &tail);
|
|
logSQL(statement, kLogMsg_App);
|
|
if (err == SQLITE_OK){
|
|
while ( sqlite3_step(vm) == SQLITE_ROW ){
|
|
QString val1, val2;
|
|
val1 = QString((const char *) sqlite3_column_text(vm, 0));
|
|
val2 = QString((const char *) sqlite3_column_text(vm, 1));
|
|
num.setNum(idxnum);
|
|
idxmap[num] = DBBrowserIndex(GetDecodedQString(val1),GetDecodedQString(val2));
|
|
idxnum ++;
|
|
}
|
|
sqlite3_finalize(vm);
|
|
}else{
|
|
lastErrorMessage = QString ("could not get list of indices");
|
|
}
|
|
}
|
|
|
|
QStringList DBBrowserDB::decodeCSV(const QString & csvfilename, char sep, char quote, int maxrecords, int * numfields)
|
|
{
|
|
QFile file(csvfilename);
|
|
QStringList result;
|
|
QString current = "";
|
|
bool inquotemode = false;
|
|
bool inescapemode = false;
|
|
int recs = 0;
|
|
*numfields = 0;
|
|
|
|
if ( file.open( QIODevice::ReadWrite ) ) {
|
|
QProgressDialog progress("Decoding CSV file...", "Cancel", 0, file.size());
|
|
progress.setWindowModality(Qt::ApplicationModal);
|
|
char c=0;
|
|
while ( c!=-1) {
|
|
c = file.getch();
|
|
if (c==quote){
|
|
if (inquotemode){
|
|
if (inescapemode){
|
|
inescapemode = false;
|
|
//add the escaped char here
|
|
current.append(c);
|
|
} else {
|
|
//are we escaping, or just finishing the quote?
|
|
char d = file.getch();
|
|
if (d==quote) {
|
|
inescapemode = true;
|
|
} else {
|
|
inquotemode = false;
|
|
}
|
|
file.ungetch(d);
|
|
}
|
|
} else {
|
|
inquotemode = true;
|
|
}
|
|
} else if (c==sep) {
|
|
if (inquotemode){
|
|
//add the sep here
|
|
current.append(c);
|
|
} else {
|
|
//not quoting, start new record
|
|
result << current;
|
|
current = "";
|
|
}
|
|
} else if (c==10) {
|
|
if (inquotemode){
|
|
//add the newline
|
|
current.append(c);
|
|
} else {
|
|
//not quoting, start new record
|
|
result << current;
|
|
current = "";
|
|
//for the first line, store the field count
|
|
if (*numfields == 0){
|
|
*numfields = result.count();
|
|
}
|
|
recs++;
|
|
progress.setValue(file.pos());
|
|
if (progress.wasCanceled()) break;
|
|
if ((recs>maxrecords)&&(maxrecords!=-1)) {
|
|
break;
|
|
}
|
|
}
|
|
} else if (c==13) {
|
|
if (inquotemode){
|
|
//add the carrier return if in quote mode only
|
|
current.append(c);
|
|
}
|
|
} else {//another character type
|
|
current.append(c);
|
|
}
|
|
}
|
|
file.close();
|
|
//do we still have a last result, not appended?
|
|
//proper csv files should end with a linefeed , so this is not necessary
|
|
//if (current.length()>0) result << current;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
|
|
|
|
|