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#include "regexpimport.h"
#include "services/notifymanager.h"
#include "common/utils.h"
#include "services/importmanager.h"
#include "sqlitestudio.h"
#include <QRegularExpression>
#include <QFile>
#include <QTextStream>
RegExpImport::RegExpImport()
{
}
bool RegExpImport::init()
{
SQLS_INIT_RESOURCE(regexpimport);
return GenericPlugin::init();
}
void RegExpImport::deinit()
{
SQLS_CLEANUP_RESOURCE(regexpimport);
}
QString RegExpImport::getDataSourceTypeName() const
{
return "RegExp";
}
ImportManager::StandardConfigFlags RegExpImport::standardOptionsToEnable() const
{
return ImportManager::CODEC|ImportManager::FILE_NAME;
}
QString RegExpImport::getFileFilter() const
{
return tr("Text files (*.txt);;All files (*)");
}
bool RegExpImport::beforeImport(const ImportManager::StandardImportConfig& config)
{
safe_delete(re);
safe_delete(file);
safe_delete(stream);
groups.clear();
buffer.clear();
columns.clear();
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());
static const QString intColTemplate = QStringLiteral("column%1");
re = new QRegularExpression(cfg.RegExpImport.Pattern.get());
QString colName;
if (cfg.RegExpImport.GroupsMode.get() == "all")
{
for (int i = 1; i <= re->captureCount(); i++)
{
groups << i;
colName = intColTemplate.arg(i);
columns << generateUniqueName(colName, columns);
}
}
else
{
QStringList entries = cfg.RegExpImport.CustomGroupList.get().split(QRegularExpression(",\\s*"));
int i;
bool ok;
for (const QString& entry : entries)
{
i = entry.toInt(&ok);
if (ok)
{
groups << i;
colName = intColTemplate.arg(i);
}
else
{
groups << entry;
colName = entry;
}
columns << generateUniqueName(colName, columns);
}
}
return true;
}
void RegExpImport::afterImport()
{
safe_delete(re);
safe_delete(file);
safe_delete(stream);
buffer.clear();
groups.clear();
}
QList<ImportPlugin::ColumnDefinition> RegExpImport::getColumns() const
{
QList<ImportPlugin::ColumnDefinition> columnList;
for (const QString& colName : columns)
columnList << ImportPlugin::ColumnDefinition(colName, QString());
return columnList;
}
QList<QVariant> RegExpImport::next()
{
QRegularExpressionMatch match = re->match(buffer);
QString line;
while (!match.hasMatch() && !(line = stream->readLine()).isNull())
{
buffer += line;
match = re->match(buffer);
}
if (!match.hasMatch())
return QList<QVariant>();
QList<QVariant> values;
for (const QVariant& group : groups)
{
if (group.type() == QVariant::Int)
values << match.captured(group.toInt());
else
values << match.captured(group.toString());
}
buffer = buffer.mid(match.capturedEnd());
return values;
}
CfgMain* RegExpImport::getConfig()
{
return &cfg;
}
QString RegExpImport::getImportConfigFormName() const
{
return "RegExpImportConfig";
}
bool RegExpImport::validateOptions()
{
QString reMsg;
QString pattern = cfg.RegExpImport.Pattern.get();
bool reOk = true;
if (pattern.isEmpty())
{
reOk = false;
reMsg = tr("Enter the regular expression pattern.");
}
QRegularExpression localRe(pattern);
if (reOk)
{
reOk &= localRe.isValid();
if (!reOk)
reMsg = tr("Invalid pattern: %1").arg(localRe.errorString());
}
QString groupMsg;
bool groupsOk = true;
bool isCustom = (cfg.RegExpImport.GroupsMode.get() == "custom");
if (isCustom && reOk)
{
QStringList entries = cfg.RegExpImport.CustomGroupList.get().split(QRegularExpression(",\\s*"));
QStringList namedCaptureGroups = localRe.namedCaptureGroups();
int captureCount = localRe.captureCount();
int i;
bool ok;
for (const QString& entry : entries)
{
i = entry.toInt(&ok);
if (ok)
{
if (i < 0 || i > captureCount)
{
groupMsg = tr("Requested capture index %1 is out of range.").arg(i);
groupsOk = false;
break;
}
}
else if (!namedCaptureGroups.contains(entry))
{
groupMsg = tr("<p>Requested capture group name '%1', but it's not defined in the pattern: <pre>%2</pre></p>")
.arg(entry, pattern.toHtmlEscaped());
groupsOk = false;
break;
}
}
}
IMPORT_MANAGER->handleValidationFromPlugin(reOk, cfg.RegExpImport.Pattern, reMsg);
IMPORT_MANAGER->handleValidationFromPlugin(groupsOk, cfg.RegExpImport.CustomGroupList, groupMsg);
IMPORT_MANAGER->updateVisibilityAndEnabled(cfg.RegExpImport.CustomGroupList, true, isCustom);
return reOk && groupsOk;
}
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