Add commandlets

src/commandlets/commandlet.h

@@ -0,0 +1,69 @@
+
+#pragma once
+
+#include <memory>
+#include "templates.h"
+#include "zstring.h"
+#include "printf.h"
+#include "m_argv.h"
+
+class Commandlet
+{
+public:
+	virtual ~Commandlet() = default;
+
+	virtual void OnCommand(FArgs args) = 0;
+	virtual void OnPrintHelp() = 0;
+
+	const FString& GetLongFormName() const { return LongFormName; }
+	const FString& GetShortDescription() const { return ShortDescription; }
+
+protected:
+	void SetLongFormName(FString name) { LongFormName = std::move(name); }
+	void SetShortDescription(FString desc) { ShortDescription = std::move(desc); }
+
+private:
+	FString LongFormName;
+	FString ShortDescription;
+};
+
+class CommandletGroup
+{
+public:
+	void AddGroup(std::unique_ptr<CommandletGroup> group);
+	void AddCommand(std::unique_ptr<Commandlet> command);
+
+	template<typename T>
+	void AddGroup() { AddGroup(std::make_unique<T>()); }
+
+	template<typename T>
+	void AddCommand() { AddCommand(std::make_unique<T>()); }
+
+	const FString& GetLongFormName() const { return LongFormName; }
+	const FString& GetShortDescription() const { return ShortDescription; }
+
+protected:
+	void SetLongFormName(FString name) { LongFormName = std::move(name); }
+	void SetShortDescription(FString desc) { ShortDescription = std::move(desc); }
+
+private:
+	FString LongFormName;
+	FString ShortDescription;
+
+	TArray<std::unique_ptr<CommandletGroup>> Groups;
+	TArray<std::unique_ptr<Commandlet>> Commands;
+
+	friend class RootCommandlet;
+};
+
+class RootCommandlet : public CommandletGroup
+{
+public:
+	RootCommandlet();
+	void RunCommand();
+
+private:
+	void RunCommand(CommandletGroup* group, FArgs args, const FString prefix);
+	void PrintCommandList(CommandletGroup* group, const FString prefix);
+	void PrintDetailHelp(CommandletGroup* group, FArgs args);
+};