X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/4271ab433cd55bbd2612292bcf39e4dc3d7274f1..0907aa4037b12b6b88ee24495d4577a064d4f8db:/projects/sgconf/actions.h

diff --git a/projects/sgconf/actions.h b/projects/sgconf/actions.h
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+++ b/projects/sgconf/actions.h
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+/*
+ *    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>
+ */
+
+#pragma once
+
+#include "action.h"
+#include "options.h"
+#include "parser_state.h"
+
+#include "stg/common.h"
+#include "stg/optional.h"
+
+#include <string>
+
+#include <cassert>
+
+namespace SGCONF
+{
+
+typedef void (* FUNC0)();
+
+template <typename F>
+class FUNC0_ACTION : public ACTION
+{
+    public:
+        FUNC0_ACTION(const F & func) : m_func(func) {}
+
+        virtual ACTION * Clone() const { return new FUNC0_ACTION<F>(*this); }
+
+        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, void * /*data*/)
+        {
+        m_func();
+        return PARSER_STATE(true, argc, argv);
+        }
+
+    private:
+        F m_func;
+        OPTION_BLOCK m_suboptions;
+};
+
+template <typename F>
+inline
+FUNC0_ACTION<F> * MakeFunc0Action(F func)
+{
+return new FUNC0_ACTION<F>(func);
+}
+
+template <typename T>
+class PARAM_ACTION : public ACTION
+{
+    public:
+        PARAM_ACTION(STG::Optional<T> & param,
+                     const T & defaultValue,
+                     const std::string & paramDescription)
+            : m_param(param),
+              m_defaltValue(defaultValue),
+              m_description(paramDescription),
+              m_hasDefault(true)
+        {}
+        PARAM_ACTION(STG::Optional<T> & param)
+            : m_param(param),
+              m_hasDefault(false)
+        {}
+        PARAM_ACTION(STG::Optional<T> & param,
+                     const std::string & paramDescription)
+            : m_param(param),
+              m_description(paramDescription),
+              m_hasDefault(false)
+        {}
+
+        virtual ACTION * Clone() const { return new PARAM_ACTION<T>(*this); }
+
+        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, void * /*data*/);
+        virtual void ParseValue(const std::string & value);
+
+    private:
+        STG::Optional<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: '" + std::to_string(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, void * /*data*/)
+{
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
+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<bool>::Parse(int argc, char ** argv, void * /*data*/)
+{
+m_param = true;
+return PARSER_STATE(false, argc, argv);
+}
+
+template <typename T>
+inline
+void PARAM_ACTION<T>::ParseValue(const std::string & stringValue)
+{
+if (stringValue.empty())
+    throw ERROR("Missing value.");
+T value;
+if (str2x(stringValue, value))
+    throw ERROR(std::string("Bad value: '") + stringValue + "'");
+m_param = value;
+}
+
+template <>
+inline
+void PARAM_ACTION<std::string>::ParseValue(const std::string & stringValue)
+{
+m_param = stringValue;
+}
+
+template <>
+inline
+PARSER_STATE PARAM_ACTION<std::string>::Parse(int argc, char ** argv, void * /*data*/)
+{
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
+m_param = *argv;
+return PARSER_STATE(false, --argc, ++argv);
+}
+
+template <typename T>
+inline
+PARAM_ACTION<T> * MakeParamAction(STG::Optional<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(STG::Optional<T> & param)
+{
+return new PARAM_ACTION<T>(param);
+}
+
+template <typename T>
+inline
+PARAM_ACTION<T> * MakeParamAction(STG::Optional<T> & param,
+                                  const std::string & paramDescription)
+{
+return new PARAM_ACTION<T>(param, paramDescription);
+}
+
+class KV_ACTION : public ACTION
+{
+    public:
+        KV_ACTION(const std::string & name,
+                  const std::string & paramDescription)
+            : m_name(name),
+              m_description(paramDescription)
+        {}
+
+        virtual ACTION * Clone() const { return new KV_ACTION(*this); }
+
+        virtual std::string ParamDescription() const { return m_description; }
+        virtual std::string DefaultDescription() const { return ""; }
+        virtual OPTION_BLOCK & Suboptions() { return m_suboptions; }
+        virtual PARSER_STATE Parse(int argc, char ** argv, void * data);
+
+    private:
+        std::string m_name;
+        std::string m_description;
+        OPTION_BLOCK m_suboptions;
+};
+
+inline
+PARSER_STATE KV_ACTION::Parse(int argc, char ** argv, void * data)
+{
+if (argc == 0 ||
+    argv == NULL ||
+    *argv == NULL)
+    throw ERROR("Missing argument.");
+assert(data != NULL && "Expecting container pointer.");
+std::map<std::string, std::string> & kvs = *static_cast<std::map<std::string, std::string>*>(data);
+kvs[m_name] = *argv;
+return PARSER_STATE(false, --argc, ++argv);
+}
+
+inline
+KV_ACTION * MakeKVAction(const std::string & name,
+                         const std::string & paramDescription)
+{
+return new KV_ACTION(name, paramDescription);
+}
+
+} // namespace SGCONF