From 0583e0b72b6bf7064c2e8af498b18f0bc168485f Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Wed, 21 Nov 2012 03:49:32 +0000
Subject: Move Configuration from Raul to Ingen.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@4836 a436a847-0d15-0410-975c-d299462d15a1
---
 ingen/Configuration.hpp | 159 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 156 insertions(+), 3 deletions(-)

(limited to 'ingen/Configuration.hpp')

diff --git a/ingen/Configuration.hpp b/ingen/Configuration.hpp
index f45f3869..fac798d1 100644
--- a/ingen/Configuration.hpp
+++ b/ingen/Configuration.hpp
@@ -17,19 +17,172 @@
 #ifndef INGEN_CONFIGURATION_HPP
 #define INGEN_CONFIGURATION_HPP
 
-#include "raul/Configuration.hpp"
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <list>
+#include <map>
+#include <string>
+
+#include "raul/Exception.hpp"
 
 namespace Ingen {
 
-/** Ingen configuration (command line options).
+/** Ingen configuration (command line options and/or configuration file).
  * @ingroup IngenShared
  */
-class Configuration : public Raul::Configuration {
+class Configuration {
 public:
 	Configuration();
+
+	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 (&other == this) {
+				return *this;
+			}
+			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,
+	                   OptionType         type,
+	                   const Value&       value);
+
+	void print_usage(const std::string& program, std::ostream& os);
+
+	struct CommandLineError : public Exception {
+		explicit CommandLineError(const std::string& m) : Exception(m) {}
+	};
+
+	void parse(int argc, char** argv) throw (CommandLineError);
+
+	void print(std::ostream& os, const std::string mime_type="text/plain") const;
+
+	const Value& option(const std::string& long_name) const;
+	bool         set(const std::string& long_name, const Value& value);
+
+	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 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;
+		OptionType  type;
+		Value       default_value;
+		Value       value;
+	};
+
+	struct OptionNameOrder {
+		inline bool operator()(const Option& a, const Option& b) {
+			return a.name < b.name;
+		}
+	};
+
+	typedef std::map<std::string, Option> Options;
+	typedef std::map<char, std::string>   ShortNames;
+	typedef std::list<std::string>        Files;
+
+	int set_value_from_string(Configuration::Option& option, const std::string& value)
+			throw (Configuration::CommandLineError);
+
+	const std::string _shortdesc;
+	const std::string _desc;
+	Options           _options;
+	ShortNames        _short_names;
+	Files             _files;
+	size_t            _max_name_length;
 };
 
 } // namespace Ingen
 
+static inline std::ostream&
+operator<<(std::ostream& os, const Ingen::Configuration::Value& value)
+{
+	switch (value.type()) {
+	case Ingen::Configuration::NOTHING: return os << "(nil)";
+	case Ingen::Configuration::INT:     return os << value.get_int();
+	case Ingen::Configuration::BOOL:    return os << (value.get_bool() ? "true" : "false");
+	case Ingen::Configuration::STRING:  return os << value.get_string();
+	}
+	return os;
+}
+
 #endif // INGEN_CONFIGURATION_HPP
 
-- 
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