--- /dev/null
+/*
+ * 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>
+ */
+
+#include "options.h"
+
+#include "action.h"
+#include "parser_state.h"
+
+#include "stg/common.h"
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <functional>
+#include <algorithm>
+
+#include <unistd.h>
+
+namespace
+{
+
+template <class C>
+void ReadConfigFile(const std::string & filePath, void (C::* callback)(const std::string&, const std::string&), C * obj)
+{
+std::ifstream stream(filePath.c_str());
+std::string line;
+size_t num = 0;
+while (std::getline(stream, line))
+ {
+ ++num;
+ line = Trim(line);
+ std::string::size_type pos = line.find_first_of('#');
+ if (pos != std::string::npos)
+ line = line.substr(0, pos);
+ if (line.empty())
+ continue;
+ pos = line.find_first_of('=');
+ if (pos == std::string::npos)
+ {
+ std::ostringstream error;
+ error << "Bad file format, missing '=' in '" << filePath << ":" << num << "'.";
+ throw std::runtime_error(error.str().c_str());
+ }
+ (obj->*callback)(Trim(line.substr(0, pos)), Trim(line.substr(pos + 1, line.length() - pos - 1)));
+ }
+}
+
+} // namespace anonymous
+
+using SGCONF::OPTION;
+using SGCONF::OPTION_BLOCK;
+using SGCONF::OPTION_BLOCKS;
+using SGCONF::ACTION;
+using SGCONF::PARSER_STATE;
+
+OPTION::OPTION(const std::string & shortName,
+ const std::string & longName,
+ ACTION * action,
+ const std::string & description)
+ : m_shortName(shortName),
+ m_longName(longName),
+ m_action(action),
+ m_description(description)
+{
+}
+
+OPTION::OPTION(const std::string & longName,
+ ACTION * action,
+ const std::string & description)
+ : m_longName(longName),
+ m_action(action),
+ m_description(description)
+{
+}
+
+OPTION::OPTION(const OPTION & rhs)
+ : m_shortName(rhs.m_shortName),
+ m_longName(rhs.m_longName),
+ m_action(rhs.m_action->Clone()),
+ m_description(rhs.m_description)
+{
+}
+
+OPTION::~OPTION()
+{
+delete m_action;
+}
+
+OPTION & OPTION::operator=(const OPTION & rhs)
+{
+m_shortName = rhs.m_shortName;
+m_longName = rhs.m_longName;
+m_action = rhs.m_action->Clone();
+m_description = rhs.m_description;
+return *this;
+}
+
+void OPTION::Help(size_t level) const
+{
+if (!m_action)
+ throw ERROR("Option is not defined.");
+std::string indent(level, '\t');
+std::cout << indent;
+if (!m_shortName.empty())
+ std::cout << "-" << m_shortName << ", ";
+std::cout << "--" << m_longName << " " << m_action->ParamDescription()
+ << "\t" << m_description << m_action->DefaultDescription() << "\n";
+m_action->Suboptions().Help(level);
+}
+
+bool OPTION::Check(const char * arg) const
+{
+if (arg == NULL)
+ return false;
+
+if (*arg++ != '-')
+ return false;
+
+if (*arg == '-')
+{
+ return m_longName == arg + 1;
+}
+
+return m_shortName == arg;
+}
+
+PARSER_STATE OPTION::Parse(int argc, char ** argv, void * data)
+{
+if (!m_action)
+ throw ERROR("Option is not defined.");
+try
+ {
+ return m_action->Parse(argc, argv, data);
+ }
+catch (const ACTION::ERROR & ex)
+ {
+ if (m_longName.empty())
+ throw ERROR("-" + m_shortName + ": " + ex.what());
+ else
+ throw m_shortName.empty() ? ERROR("--" + m_longName + ": " + ex.what())
+ : ERROR("--" + m_longName + ", -" + m_shortName + ": " + ex.what());
+ }
+}
+
+void OPTION::ParseValue(const std::string & value)
+{
+if (!m_action)
+ throw ERROR("Option is not defined.");
+try
+ {
+ return m_action->ParseValue(value);
+ }
+catch (const ACTION::ERROR & ex)
+ {
+ throw ERROR(m_longName + ": " + ex.what());
+ }
+}
+
+OPTION_BLOCK & OPTION_BLOCK::Add(const std::string & shortName,
+ const std::string & longName,
+ ACTION * action,
+ const std::string & description)
+{
+m_options.push_back(OPTION(shortName, longName, action, description));
+return *this;
+}
+
+OPTION_BLOCK & OPTION_BLOCK::Add(const std::string & longName,
+ ACTION * action,
+ const std::string & description)
+{
+m_options.push_back(OPTION(longName, action, description));
+return *this;
+}
+
+void OPTION_BLOCK::Help(size_t level) const
+{
+if (m_options.empty())
+ return;
+if (!m_description.empty())
+ std::cout << m_description << ":\n";
+std::for_each(m_options.begin(),
+ m_options.end(),
+ std::bind2nd(std::mem_fun_ref(&OPTION::Help), level + 1));
+}
+
+PARSER_STATE OPTION_BLOCK::Parse(int argc, char ** argv, void * data)
+{
+PARSER_STATE state(false, argc, argv);
+if (state.argc == 0)
+ return state;
+while (state.argc > 0 && !state.stop)
+ {
+ std::vector<OPTION>::iterator it = std::find_if(m_options.begin(), m_options.end(), std::bind2nd(std::mem_fun_ref(&OPTION::Check), *state.argv));
+ if (it != m_options.end())
+ state = it->Parse(--state.argc, ++state.argv, data);
+ else
+ break;
+ ++it;
+ }
+return state;
+}
+
+void OPTION_BLOCK::ParseFile(const std::string & filePath)
+{
+if (access(filePath.c_str(), R_OK))
+ throw ERROR("File '" + filePath + "' does not exists.");
+ReadConfigFile(filePath, &OPTION_BLOCK::OptionCallback, this);
+}
+
+void OPTION_BLOCK::OptionCallback(const std::string & key, const std::string & value)
+{
+for (std::vector<OPTION>::iterator it = m_options.begin(); it != m_options.end(); ++it)
+ if (it->Name() == key)
+ it->ParseValue(value);
+}
+
+void OPTION_BLOCKS::Help(size_t level) const
+{
+std::list<OPTION_BLOCK>::const_iterator it(m_blocks.begin());
+while (it != m_blocks.end())
+ {
+ it->Help(level);
+ std::cout << "\n";
+ ++it;
+ }
+}
+
+PARSER_STATE OPTION_BLOCKS::Parse(int argc, char ** argv)
+{
+PARSER_STATE state(false, argc, argv);
+std::list<OPTION_BLOCK>::iterator it(m_blocks.begin());
+while (state.argc > 0 && !state.stop && it != m_blocks.end())
+ {
+ state = it->Parse(state.argc, state.argv);
+ ++it;
+ }
+return state;
+}
git.stg.codes / stg.git / blobdiff