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#include "csvimport.h"
#include "services/importmanager.h"
#include "sqlitestudio.h"
#include "services/notifymanager.h"
#include <QVariant>
#include <QFile>
#include <QTextStream>
CsvImport::CsvImport()
{
}
QString CsvImport::getDataSourceTypeName() const
{
return "CSV";
}
ImportManager::StandardConfigFlags CsvImport::standardOptionsToEnable() const
{
return ImportManager::CODEC|ImportManager::FILE_NAME;
}
bool CsvImport::beforeImport(const ImportManager::StandardImportConfig& config)
{
defineCsvFormat();
file = new QFile(config.inputFileName);
if (!file->open(QFile::ReadOnly) || !file->isReadable())
{
notifyError(tr("Cannot read file %1").arg(config.inputFileName));
safe_delete(file);
return false;
}
stream = new QTextStream(file);
stream->setCodec(config.codec.toLatin1().data());
if (!extractColumns())
{
safe_delete(stream);
safe_delete(file);
return false;
}
return true;
}
void CsvImport::afterImport()
{
safe_delete(stream);
safe_delete(file);
}
bool CsvImport::extractColumns()
{
QStringList deserializedEntry = CsvSerializer::deserializeOneEntry(*stream, csvFormat);
while (deserializedEntry.isEmpty() && !stream->atEnd())
deserializedEntry = CsvSerializer::deserializeOneEntry(*stream, csvFormat);
if (deserializedEntry.isEmpty())
{
notifyError(tr("Could not find any data in the file %1.").arg(file->fileName()));
return false;
}
if (cfg.CsvImport.FirstRowAsColumns.get())
{
columnNames = deserializedEntry;
}
else
{
static const QString colTmp = QStringLiteral("column%1");
columnNames.clear();
for (int i = 1, total = deserializedEntry.size(); i <= total; ++i)
columnNames << colTmp.arg(i);
stream->seek(0);
}
return true;
}
void CsvImport::defineCsvFormat()
{
csvFormat = CsvFormat();
csvFormat.rowSeparators = QStringList({"\r\n", "\n", "\r"});
csvFormat.multipleRowSeparators = true;
csvFormat.strictRowSeparator = true;
csvFormat.quotationMark = cfg.CsvImport.QuotationMark.get();
switch (cfg.CsvImport.Separator.get())
{
case 0:
csvFormat.columnSeparator = ',';
break;
case 1:
csvFormat.columnSeparator = ';';
break;
case 2:
csvFormat.columnSeparator = '\t';
break;
case 3:
csvFormat.columnSeparator = ' ';
break;
default:
csvFormat.columnSeparator = cfg.CsvImport.CustomSeparator.get();
break;
}
csvFormat.calculateSeparatorMaxLengths();
}
QList<ImportPlugin::ColumnDefinition> CsvImport::getColumns() const
{
QList<ImportPlugin::ColumnDefinition> columnList;
for (const QString& colName : columnNames)
columnList << ImportPlugin::ColumnDefinition(colName, QString());
return columnList;
}
QList<QVariant> CsvImport::next()
{
QStringList deserializedEntry = CsvSerializer::deserializeOneEntry(*stream, csvFormat);
QList<QVariant> values;
if (deserializedEntry.isEmpty())
return values;
if (cfg.CsvImport.NullValues.get())
{
QString nullVal = cfg.CsvImport.NullValueString.get();
for (const QString& val : deserializedEntry)
{
if (val == nullVal)
values << QVariant(QVariant::String);
else
values << val;
}
}
else
{
for (const QString& val : deserializedEntry)
values << val;
}
return values;
}
CfgMain* CsvImport::getConfig()
{
return &cfg;
}
QString CsvImport::getImportConfigFormName() const
{
return "csvImportOptions";
}
bool CsvImport::validateOptions()
{
bool isValid = true;
if (cfg.CsvImport.Separator.get() >= 4)
{
IMPORT_MANAGER->updateVisibilityAndEnabled(cfg.CsvImport.CustomSeparator, true, true);
bool valid = !cfg.CsvImport.CustomSeparator.get().isEmpty();
IMPORT_MANAGER->handleValidationFromPlugin(valid, cfg.CsvImport.CustomSeparator, tr("Enter the custom separator character."));
isValid &= valid;
}
else
{
IMPORT_MANAGER->updateVisibilityAndEnabled(cfg.CsvImport.CustomSeparator, true, false);
IMPORT_MANAGER->handleValidationFromPlugin(true, cfg.CsvImport.CustomSeparator);
}
if (cfg.CsvImport.NullValues.get())
{
IMPORT_MANAGER->updateVisibilityAndEnabled(cfg.CsvImport.NullValueString, true, true);
}
else
{
IMPORT_MANAGER->updateVisibilityAndEnabled(cfg.CsvImport.NullValueString, true, false);
IMPORT_MANAGER->handleValidationFromPlugin(true, cfg.CsvImport.NullValueString);
}
return isValid;
}
QString CsvImport::getFileFilter() const
{
return tr("CSV files (*.csv);;Text files (*.txt);;All files (*)");
}
bool CsvImport::init()
{
SQLS_INIT_RESOURCE(csvimport);
return GenericPlugin::init();
}
void CsvImport::deinit()
{
SQLS_CLEANUP_RESOURCE(csvimport);
}
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