logic: Added "Empty Python" Sourcegroup to project setup

The respective release of the SourcetrailPythonIndexer project is automatically downloaded from GitHub when the setup script is executed.

src/lib_python/project/SourceGroupPythonEmpty.cpp

@@ -0,0 +1,66 @@
+#include "SourceGroupPythonEmpty.h"
+
+#include "FileManager.h"
+#include "IndexerCommandCustom.h"
+#include "ProjectSettings.h"
+#include "ResourcePaths.h"
+#include "SourceGroupSettingsPythonEmpty.h"
+#include "SqliteIndexStorage.h"
+#include "utility.h"
+
+SourceGroupPythonEmpty::SourceGroupPythonEmpty(std::shared_ptr<SourceGroupSettingsPythonEmpty> settings)
+	: m_settings(settings)
+{
+}
+
+std::set<FilePath> SourceGroupPythonEmpty::filterToContainedFilePaths(const std::set<FilePath>& filePaths) const
+{
+	return SourceGroup::filterToContainedFilePaths(
+		filePaths,
+		std::set<FilePath>(),
+		utility::toSet(m_settings->getSourcePathsExpandedAndAbsolute()),
+		m_settings->getExcludeFiltersExpandedAndAbsolute()
+	);
+}
+
+std::set<FilePath> SourceGroupPythonEmpty::getAllSourceFilePaths() const
+{
+	FileManager fileManager;
+	fileManager.update(
+		m_settings->getSourcePathsExpandedAndAbsolute(),
+		m_settings->getExcludeFiltersExpandedAndAbsolute(),
+		m_settings->getSourceExtensions()
+	);
+	return fileManager.getAllSourceFilePaths();
+}
+
+std::vector<std::shared_ptr<IndexerCommand>> SourceGroupPythonEmpty::getIndexerCommands(const std::set<FilePath>& filesToIndex) const
+{
+	std::vector<std::shared_ptr<IndexerCommand>> indexerCommands;
+	for (const FilePath& sourceFilePath : getAllSourceFilePaths())
+	{
+		if (filesToIndex.find(sourceFilePath) != filesToIndex.end())
+		{
+			indexerCommands.push_back(std::make_shared<IndexerCommandCustom>(
+				L"\"" + ResourcePaths::getPythonPath().wstr() + L"SourcetrailPythonIndexer\" --source-file-path=%{SOURCE_FILE_PATH} --database-file-path=%{DATABASE_FILE_PATH}",
+				m_settings->getProjectSettings()->getProjectFilePath(),
+				m_settings->getProjectSettings()->getTempDBFilePath(),
+				std::to_wstring(SqliteIndexStorage::getStorageVersion()),
+				sourceFilePath,
+				true
+			));
+		}
+	}
+
+	return indexerCommands;
+}
+
+std::shared_ptr<SourceGroupSettings> SourceGroupPythonEmpty::getSourceGroupSettings()
+{
+	return m_settings;
+}
+
+std::shared_ptr<const SourceGroupSettings> SourceGroupPythonEmpty::getSourceGroupSettings() const
+{
+	return m_settings;
+}