Added command line parser prototype.

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

diff --git a/projects/sgconf/parsers.h b/projects/sgconf/parsers.h
new file mode 100644 (file)
index 0000000..3ecb18a
--- /dev/null
+++ b/projects/sgconf/parsers.h
@@ -0,0 +1,124 @@
+/*
+ *    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_PARSERS_H__
+#define __STG_SGCONF_PARSERS_H__
+
+namespace SGCONF
+{
+
+typedef void (*FUNC0)();
+
+template <typename T>
+struct FUNC1
+{
+typedef void (*type)(T);
+};
+
+class PARSER
+{
+    public:
+        virtual PARSER_STATE parse(int, char **, CONFIG&) = 0;
+};
+
+template <typename T>
+class PARAM_PARSER : public PARSER
+{
+    public:
+        PARAM_PARSER(T& var) : m_var(var) {}
+        virtual PARSER_STATE parse(int argc, char ** argv, CONFIG& config)
+        {
+        std::istringstream stream(argv[0]);
+        stream >> m_var;
+        PARSER_STATE state;
+        state.argc = argc - 1;
+        state.argv = argv + 1;
+        state.config = config;
+        state.result = false;
+        return state;
+        }
+
+    private:
+        T& m_var;
+};
+
+class FUNC0_PARSER
+{
+    public:
+        FUNC0_PARSER(FUNC0 func) : m_func(func) {}
+        virtual PARSER_STATE parse(int argc, char ** argv, CONFIG& config)
+        {
+        m_func();
+        PARSER_STATE state;
+        state.argc = argc - 1;
+        state.argv = argv + 1;
+        state.config = config;
+        state.result = true;
+        return state;
+        }
+
+    private:
+        FUNC0 m_func;
+};
+
+template <typename T>
+class FUNC1_PARSER
+{
+    public:
+        FUNC1_PARSER(typename FUNC1<T>::type func, const T & arg) : m_func(func), m_arg(arg) {}
+        virtual PARSER_STATE parse(int argc, char ** argv, CONFIG& config)
+        {
+        m_func(m_arg);
+        PARSER_STATE state;
+        state.argc = argc - 1;
+        state.argv = argv + 1;
+        state.config = config;
+        state.result = true;
+        return state;
+        }
+
+    private:
+        typename FUNC1<T>::type m_func;
+        T m_arg;
+}
+
+class PARSERS
+{
+    public:
+        typedef PARSER_STATE (* FUNC)(int, char **, CONFIG&);
+
+        template <typename T>
+        void add(const std::string & shortToken,
+                 const std::string & fullToken,
+                 T& var);
+
+        template <>
+        void add<void>(const std:string & shortToken,
+                       const std::string & fullToken,
+                       FUNC0 func);
+        template <typename V>
+        void add<void>(const std:string & shortToken,
+                       const std::string & fullToken,
+                       FUNC1 func, const V& v);
+
+    private:
+};
+
+}