#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)
+OPTION::OPTION(const std::string& shortName,
+ const std::string& longName,
+ std::unique_ptr<ACTION> action,
+ const std::string& description)
: m_shortName(shortName),
m_longName(longName),
- m_action(action),
+ m_action(std::move(action)),
m_description(description)
{
}
-OPTION::OPTION(const std::string & longName,
- ACTION * action,
- const std::string & description)
+OPTION::OPTION(const std::string& longName,
+ std::unique_ptr<ACTION> action,
+ const std::string& description)
: m_longName(longName),
- m_action(action),
+ m_action(std::move(action)),
m_description(description)
{
}
-OPTION::OPTION(const OPTION & rhs)
- : m_shortName(rhs.m_shortName),
- m_longName(rhs.m_longName),
- m_action(rhs.m_action),
- m_description(rhs.m_description)
+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);
}
-OPTION::~OPTION()
+bool OPTION::Check(const char* arg) const
{
-delete m_action;
+ if (arg == NULL)
+ return false;
+
+ if (*arg++ != '-')
+ return false;
+
+ if (*arg == '-')
+ return m_longName == arg + 1;
+
+ return m_shortName == arg;
}
-void OPTION::Help(size_t level) const
+PARSER_STATE OPTION::Parse(int argc, char** argv, void* data)
{
-if (!m_action)
- throw ERROR("Option is not defined.");
-std::string indent(level, '\t');
-std::cout << indent << "\t";
-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 + 1);
+ 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());
+ }
}
-bool OPTION::Check(const char * arg) const
+void OPTION::ParseValue(const std::string& value)
{
-if (arg == NULL)
- return false;
+ 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());
+ }
+}
-if (*arg++ != '-')
- return false;
+OPTION_BLOCK& OPTION_BLOCK::Add(const std::string& shortName,
+ const std::string& longName,
+ std::unique_ptr<ACTION> action,
+ const std::string& description)
+{
+ m_options.emplace_back(shortName, longName, std::move(action), description);
+ return *this;
+}
-if (*arg == '-')
- return m_longName == arg + 1;
+OPTION_BLOCK& OPTION_BLOCK::Add(const std::string& longName,
+ std::unique_ptr<ACTION> action,
+ const std::string& description)
+{
+ m_options.emplace_back(longName, std::move(action), description);
+ return *this;
+}
-return m_shortName == arg;
+void OPTION_BLOCK::Help(size_t level) const
+{
+ if (m_options.empty())
+ return;
+ if (!m_description.empty())
+ std::cout << m_description << ":\n";
+ for (const auto& option : m_options)
+ option.Help(level + 1);
}
-PARSER_STATE OPTION::Parse(int argc, char ** argv)
+PARSER_STATE OPTION_BLOCK::Parse(int argc, char** argv, void* data)
{
-if (!m_action)
- throw ERROR("Option is not defined.");
-try
- {
- return m_action->Parse(argc, argv);
- }
-catch (const ACTION::ERROR & ex)
+ PARSER_STATE state(false, argc, argv);
+ if (state.argc == 0)
+ return state;
+ while (state.argc > 0 && !state.stop)
{
- throw ERROR(m_longName + ": " + ex.what());
+ const auto it = std::find_if(m_options.begin(), m_options.end(), [&state](const auto& opt){ return opt.Check(*state.argv); });
+ if (it != m_options.end())
+ state = it->Parse(--state.argc, ++state.argv, data);
+ else
+ break;
}
+ return state;
}
-void OPTION_BLOCK::Add(const std::string & shortName,
- const std::string & longName,
- ACTION * action,
- const std::string & description)
+void OPTION_BLOCK::ParseFile(const std::string& filePath)
{
-m_options.push_back(OPTION(shortName, longName, action, description));
+ if (access(filePath.c_str(), R_OK))
+ throw ERROR("File '" + filePath + "' does not exists.");
+ ReadConfigFile(filePath, &OPTION_BLOCK::OptionCallback, this);
}
-void OPTION_BLOCK::Add(const std::string & longName,
- ACTION * action,
- const std::string & description)
+void OPTION_BLOCK::OptionCallback(const std::string& key, const std::string& value)
{
-m_options.push_back(OPTION(longName, action, description));
+ for (auto& option : m_options)
+ if (option.Name() == key)
+ option.ParseValue(value);
}
-void OPTION_BLOCK::Help(size_t level) const
+void OPTION_BLOCKS::Help(size_t level) const
{
-std::for_each(m_options.begin(),
- m_options.end(),
- std::bind2nd(std::mem_fun_ref(&OPTION::Help), level));
+ for (const auto& block : m_blocks)
+ {
+ block.Help(level);
+ std::cout << "\n";
+ }
}
-PARSER_STATE OPTION_BLOCK::Parse(int argc, char ** argv)
+PARSER_STATE OPTION_BLOCKS::Parse(int argc, char** argv)
{
-PARSER_STATE state(false, argc, argv);
-while (state.argc > 0 && !state.stop)
+ PARSER_STATE state(false, argc, argv);
+ auto it = m_blocks.begin();
+ while (state.argc > 0 && !state.stop && it != m_blocks.end())
{
- 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);
- else
- break;
+ state = it->Parse(state.argc, state.argv);
+ ++it;
}
-return state;
+ return state;
}
git.stg.codes / stg.git / blobdiff