Implemented new command line options parser.

[stg.git] / projects / sgconf / actions.h

diff --git a/projects/sgconf/actions.h b/projects/sgconf/actions.h
new file mode 100644 (file)
index 0000000..739fbf1
--- /dev/null
+++ b/projects/sgconf/actions.h
@@ -0,0 +1,145 @@
+/*
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#ifndef __STG_SGCONF_ACTIONS_H__
+#define __STG_SGCONF_ACTIONS_H__
+
+#include "action.h"
+#include "options.h"
+#include "parser_state.h"
+
+#include "stg/common.h"
+#include "stg/resetable.h"
+
+#include <string>
+
+namespace SGCONF
+{
+
+typedef void (* FUNC0)();
+
+class FUNC0_ACTION : public ACTION
+{
+    public:
+        FUNC0_ACTION(FUNC0 func) : m_func(func) {}
+
+        virtual std::string ParamDescription() const { return ""; }
+        virtual std::string DefaultDescription() const { return ""; }
+        virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
+        virtual PARSER_STATE Parse(int argc, char ** argv);
+
+    private:
+        FUNC0 m_func;
+        OPTION_BLOCK m_suboptions;
+};
+
+inline
+FUNC0_ACTION * MakeFunc0Action(FUNC0 func)
+{
+return new FUNC0_ACTION(func);
+}
+
+template <typename T>
+class PARAM_ACTION: public ACTION
+{
+    public:
+        PARAM_ACTION(RESETABLE<T> & param,
+                     const T & defaultValue,
+                     const std::string & paramDescription)
+            : m_param(param),
+              m_defaltValue(defaultValue),
+              m_description(paramDescription),
+              m_hasDefault(true)
+        {}
+        PARAM_ACTION(RESETABLE<T> & param,
+                     const std::string & paramDescription)
+            : m_param(param),
+              m_description(paramDescription),
+              m_hasDefault(false)
+        {}
+
+        virtual std::string ParamDescription() const { return m_description; }
+        virtual std::string DefaultDescription() const;
+        virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
+        virtual PARSER_STATE Parse(int argc, char ** argv);
+
+    private:
+        RESETABLE<T> & m_param;
+        T m_defaltValue;
+        std::string m_description;
+        bool m_hasDefault;
+        OPTION_BLOCK m_suboptions;
+};
+
+template <typename T>
+inline
+std::string PARAM_ACTION<T>::DefaultDescription() const
+{
+return m_hasDefault ? " (default: '" + x2str(m_defaltValue) + "')"
+                    : "";
+}
+
+template <>
+inline
+std::string PARAM_ACTION<std::string>::DefaultDescription() const
+{
+return m_hasDefault ? " (default: '" + m_defaltValue + "')"
+                    : "";
+}
+
+template <typename T>
+inline
+PARSER_STATE PARAM_ACTION<T>::Parse(int argc, char ** argv)
+{
+T value;
+if (str2x(*argv, value))
+    throw ERROR(std::string("Bad argument: '") + *argv + "'");
+m_param = value;
+return PARSER_STATE(false, --argc, ++argv);
+}
+
+template <>
+inline
+PARSER_STATE PARAM_ACTION<std::string>::Parse(int argc, char ** argv)
+{
+m_param = *argv;
+return PARSER_STATE(false, --argc, ++argv);
+}
+
+template <typename T>
+inline
+PARAM_ACTION<T> * MakeParamAction(RESETABLE<T> & param,
+                                  const T & defaultValue,
+                                  const std::string & paramDescription)
+{
+return new PARAM_ACTION<T>(param, defaultValue, paramDescription);
+}
+
+template <typename T>
+inline
+PARAM_ACTION<T> * MakeParamAction(RESETABLE<T> & param,
+                                  const std::string & paramDescription)
+{
+return new PARAM_ACTION<T>(param, paramDescription);
+}
+
+} // namespace SGCONF
+
+#endif