From 8350acca946fc925d359f2d7c8f342cef8f5b71b Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Mon, 19 Mar 2012 23:34:37 +0000
Subject: Use dynamic type IDs for Atoms (for direct compatibility with LV2
 atoms).

git-svn-id: http://svn.drobilla.net/lad/trunk/raul@4079 a436a847-0d15-0410-975c-d299462d15a1
---
 raul/Configuration.hpp | 112 ++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 98 insertions(+), 14 deletions(-)

(limited to 'raul/Configuration.hpp')

diff --git a/raul/Configuration.hpp b/raul/Configuration.hpp
index 9efca42..7983850 100644
--- a/raul/Configuration.hpp
+++ b/raul/Configuration.hpp
@@ -18,14 +18,17 @@
 #ifndef RAUL_CONFIGURATION_HPP
 #define RAUL_CONFIGURATION_HPP
 
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include <exception>
 #include <list>
 #include <map>
 #include <ostream>
 #include <string>
 
-#include "raul/Atom.hpp"
-
 namespace Raul {
 
 /** Program configuration (command line options and/or configuration file).
@@ -34,20 +37,90 @@ namespace Raul {
  */
 class Configuration {
 public:
-	Configuration(Forge*             forge,
-	              const std::string& shortdesc,
+	Configuration(const std::string& shortdesc,
 	              const std::string& desc)
-		: _forge(forge)
-		, _shortdesc(shortdesc)
+		: _shortdesc(shortdesc)
 		, _desc(desc)
 		, _max_name_length(0)
 	{}
 
+	enum OptionType {
+		NOTHING,
+		BOOL,
+		INT,
+		STRING
+	};
+
+	class Value {
+	public:
+		Value()       : _type(NOTHING) { _val._string = NULL; }
+		Value(bool v) : _type(BOOL)    { _val._bool = v; }
+		Value(int  v) : _type(INT)     { _val._int = v; }
+
+		Value(const char* v) : _type(STRING) {
+			const size_t len = strlen(v);
+			_val._string = (char*)calloc(len + 1, 1);
+			memcpy(_val._string, v, len + 1);
+		}
+
+		Value(const std::string& v) : _type(STRING) {
+			_val._string = (char*)calloc(v.length() + 1, 1);
+			memcpy(_val._string, v.c_str(), v.length() + 1);
+		}
+
+		Value(const Value& copy)
+			: _type(copy._type)
+			, _val(copy._val)
+		{
+			if (_type == STRING) {
+				const size_t len = strlen(copy.get_string());
+				_val._string = (char*)malloc(len + 1);
+				memcpy(_val._string, copy.get_string(), len + 1);
+			}
+		}
+
+		Value& operator=(const Value& other)
+		{
+			if (_type == STRING) {
+				free(_val._string);
+			}
+			_type = other._type;
+			_val  = other._val;
+			if (_type == STRING) {
+				const size_t len = strlen(other.get_string());
+				_val._string = (char*)malloc(len + 1);
+				memcpy(_val._string, other.get_string(), len + 1);
+			}
+			return *this;
+		}
+
+		~Value() {
+			if (_type == STRING) {
+				free(_val._string);
+			}
+		}
+
+		inline OptionType type()     const { return _type; }
+		inline bool       is_valid() const { return _type != NOTHING; }
+
+		inline int32_t     get_int()    const { assert(_type == INT);    return _val._int; }
+		inline bool        get_bool()   const { assert(_type == BOOL);   return _val._bool; }
+		inline const char* get_string() const { assert(_type == STRING); return _val._string; }
+
+	private:
+		OptionType _type;
+		union {
+			bool    _bool;
+			int32_t _int;
+			char*   _string;
+		} _val;
+	};
+
 	Configuration& add(const std::string& name,
 	                   char               letter,
 	                   const std::string& desc,
-	                   const Atom::Type   type,
-	                   const Atom&        value);
+	                   OptionType         type,
+	                   const Value&       value);
 
 	void print_usage(const std::string& program, std::ostream& os);
 
@@ -62,23 +135,23 @@ public:
 
 	void print(std::ostream& os, const std::string mime_type="text/plain") const;
 
-	const Raul::Atom& option(const std::string& long_name);
+	const Value& option(const std::string& long_name);
 	const std::list<std::string>& files() const { return _files; }
 
 private:
 	struct Option {
 	public:
 		Option(const std::string& n, char l, const std::string& d,
-		       const Atom::Type type, const Raul::Atom& def)
+		       const OptionType type, const Value& def)
 			: name(n), letter(l), desc(d), type(type), default_value(def), value(def)
 		{}
 
 		std::string name;
 		char        letter;
 		std::string desc;
-		Atom::Type  type;
-		Raul::Atom  default_value;
-		Raul::Atom  value;
+		OptionType  type;
+		Value       default_value;
+		Value       value;
 	};
 
 	struct OptionNameOrder {
@@ -94,7 +167,6 @@ private:
 	int set_value_from_string(Configuration::Option& option, const std::string& value)
 			throw (Configuration::CommandLineError);
 
-	Forge*            _forge;
 	const std::string _shortdesc;
 	const std::string _desc;
 	Options           _options;
@@ -105,5 +177,17 @@ private:
 
 } // namespace Raul
 
+static inline std::ostream&
+operator<<(std::ostream& os, const Raul::Configuration::Value& value)
+{
+	switch (value.type()) {
+	case Raul::Configuration::NOTHING: return os << "(nil)";
+	case Raul::Configuration::INT:     return os << value.get_int();
+	case Raul::Configuration::BOOL:    return os << (value.get_bool() ? "true" : "false");
+	case Raul::Configuration::STRING:  return os << value.get_string();
+	}
+	return os;
+}
+
 #endif // RAUL_CONFIGURATION_HPP
 
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