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@rioki
Created Sep 6, 2014
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Rioki's Option Parser
//
// Rioki's Option Parser
//
// Copyright (c) 2014 Sean Farrell <sean.farrell@rioki.org>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
#include "Options.h"
#include <cassert>
#include <stdexcept>
#include <regex>
Options::Options(int argc, char* argv[])
{
if (argc != 0)
{
command = argv[0];
}
std::regex option("--?[a-zA-Z0-9]+");
std::regex long_option("--([a-zA-Z0-9]+)");
std::regex short_option("-([a-zA-Z0-9]+)");
std::smatch match;
for (int i = 1; i < argc; i++)
{
std::string arg = argv[i];
if (std::regex_match(arg, match, long_option))
{
assert(match.size() == 2);
std::string a = match[1].str();
std::string value;
if (i+1 < argc && std::regex_match(argv[i+1], option) == false)
{
value = argv[i+1];
i++;
}
options[a] = value;
}
else if (std::regex_match(arg, match, short_option))
{
assert(match.size() == 2);
std::string aaa = match[1].str();
for (size_t j = 0; j < aaa.size(); j++)
{
std::string a = aaa.substr(j, 1);
std::string value;
if (j+1 == aaa.size()) // only the last short arg may have an option
{
if (i+1 < argc && std::regex_match(argv[i+1], option) == false)
{
value = argv[i+1];
i++;
}
}
options[a] = value;
}
}
else
{
files.push_back(arg);
}
}
}
Options::~Options() {}
const std::string& Options::get_command() const
{
return command;
}
size_t Options::get_file_count() const
{
return files.size();
}
const std::string& Options::get_file(size_t i) const
{
return files.at(i);
}
bool Options::has_option(const std::string& id) const
{
return options.find(id) != options.end();
}
const std::string& Options::get_option(const std::string& id) const
{
auto i = options.find(id);
if (i != options.end())
{
return i->second;
}
else
{
throw std::logic_error("invalid option id");
}
}
//
// Rioki's Option Parser
//
// Copyright (c) 2014 Sean Farrell <sean.farrell@rioki.org>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
#ifndef _OPTIONS_H_
#define _OPTIONS_H_
#include <map>
#include <vector>
#include <string>
class Options
{
public:
Options(int argc, char* argv[]);
~Options();
const std::string& get_command() const;
size_t get_file_count() const;
const std::string& get_file(size_t i = 0) const;
bool has_option(const std::string& id) const;
const std::string& get_option(const std::string& id) const;
private:
std::string command;
std::vector<std::string> files;
std::map<std::string, std::string> options;
Options(const Options&) = delete;
const Options& operator = (const Options&) = delete;
};
#endif
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