Чтение аргументов с предварительной обработкой
This commit is contained in:
Alexander Zhirov
parent
1c978ba183
commit
ba8e55d9c0
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@ -0,0 +1,17 @@
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{
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"files.associations": {
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"functional": "cpp",
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"type_traits": "cpp",
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"variant": "cpp",
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"__hash_table": "cpp",
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"deque": "cpp",
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"map": "cpp",
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"memory": "cpp",
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"mutex": "cpp",
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"optional": "cpp",
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"queue": "cpp",
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"thread": "cpp",
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"unordered_map": "cpp",
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"vector": "cpp"
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}
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}
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177
argpars.cpp
177
argpars.cpp
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@ -7,110 +7,125 @@
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#include <argpars.hpp>
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ArgPars::ArgPars(cPtr callback, bool silencemode) :
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longOptions(nullptr), sizeLongOption(0), shortOptions(nullptr), sizeShortOption(0), _callback(callback)
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namespace args
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{
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if (silencemode)
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ConfigOption::ConfigOption(const std::string &longParameter, const char shortParameter, const hasArg ha, _handler h) :
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_longParameter(nullptr), _shortParameter(shortParameter), _ha(ha), _h(h)
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{
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_longParameter = new char[longParameter.length() + 1];
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strcpy(_longParameter, longParameter.c_str());
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}
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const char* ConfigOption::getLongParameter() const
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{
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return _longParameter;
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}
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const char& ConfigOption::getShortParameter() const
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{
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return _shortParameter;
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}
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const hasArg& ConfigOption::getPresenceArgument() const
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{
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return _ha;
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}
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const _handler ConfigOption::getHandler() const
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{
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return _h;
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}
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std::vector<std::string> Option::_handling() const
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{
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return _h ? _h(_values) : _values;
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}
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Option::Option(const _handler h) :
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_h(h)
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{
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}
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void Option::push(const std::string &value)
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{
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_values.push_back(value);
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}
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std::vector<std::string> Option::getValues(bool handling)
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{
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if (handling)
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return _handling();
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return _values;
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}
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void Hub::_createArguments(const std::vector<ConfigOption> &options, bool silence)
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{
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_longOptions = new struct option[options.size() + 1];
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std::string temp;
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if (silence)
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temp.push_back(':');
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for (auto const &opt : options | boost::adaptors::indexed(0))
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{
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shortOptions = new char[++sizeShortOption];
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shortOptions[0] = ':';
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_longOptions[opt.index()].name = opt.value().getLongParameter();
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_longOptions[opt.index()].has_arg = opt.value().getPresenceArgument();
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_longOptions[opt.index()].flag = nullptr;
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_longOptions[opt.index()].val = opt.value().getShortParameter();
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temp.push_back(opt.value().getShortParameter());
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switch (opt.value().getPresenceArgument())
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{
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case hasArg::OPTIONAL:
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temp.push_back(':');
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case hasArg::REQUIRED:
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temp.push_back(':');
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break;
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case hasArg::NO:
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break;
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}
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_arguments[opt.value().getShortParameter()].first = false;
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_arguments[opt.value().getShortParameter()].second =
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{ opt.value().getHandler() };
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}
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_longOptions[options.size()].name = nullptr;
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_longOptions[options.size()].has_arg = 0;
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_longOptions[options.size()].flag = nullptr;
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_longOptions[options.size()].val = 0;
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_shortOptions = new char[temp.size() + 1];
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strcpy(_shortOptions, temp.c_str());
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}
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void ArgPars::addShortOption(const char shortKey, hasArg argument)
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Hub::Hub(const std::vector<ConfigOption> &options, bool silence) :
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_longOptions(nullptr), _shortOptions(nullptr)
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{
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size_t sizeTemp = sizeShortOption;
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if (argument == hasArg::REQUIRED)
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++sizeShortOption;
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else if (argument == hasArg::OPTIONAL)
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sizeShortOption += 2;
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char *temp = new char[++sizeShortOption];
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if (sizeTemp)
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strcpy(temp, shortOptions);
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temp[sizeTemp++] = shortKey;
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if (argument == hasArg::REQUIRED)
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temp[sizeTemp] = ':';
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else if (argument == hasArg::OPTIONAL)
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strcpy(&temp[sizeTemp], "::");
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delete[] shortOptions;
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shortOptions = temp;
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cfg[shortKey].first = false;
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_createArguments(options, silence);
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}
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struct option ArgPars::createNewOption(const char shortKey, const std::string &longKey, hasArg argument)
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void Hub::readArguments(int argc, char *argv[], void (*_callback)())
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{
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struct option newOption;
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char *name = new char[longKey.length() + 1];
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strcpy(name, longKey.c_str());
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newOption.name = name;
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newOption.has_arg = argument;
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newOption.flag = nullptr;
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newOption.val = shortKey;
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return newOption;
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}
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void ArgPars::addLongOption(const char shortKey, const std::string &longKey, hasArg argument)
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{
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struct option *temp = new struct option[++sizeLongOption];
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for (size_t i = 0; i < sizeLongOption - 1; ++i)
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temp[i] = longOptions[i];
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temp[sizeLongOption - 1] = createNewOption(shortKey, longKey, argument);
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delete[] longOptions;
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longOptions = temp;
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}
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void ArgPars::readArguments(int argc, char *argv[])
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{
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int option_index;
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int next_option;
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while ((next_option = getopt_long(argc, argv, shortOptions, longOptions, &option_index)) != -1)
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while ((next_option = getopt_long(argc, argv, _shortOptions, _longOptions, nullptr)) != -1)
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{
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if (cfg.count(next_option))
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if (_arguments.count(next_option))
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{
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cfg[next_option].first = true;
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_arguments[next_option].first = true;
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if (optarg)
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cfg[next_option].second.push_back(std::string(optarg));
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_arguments[next_option].second.push(std::string(optarg));
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}
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if (next_option == '?' && _callback)
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_callback();
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}
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}
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void ArgPars::addKey(const char shortKey, const std::string &longKey, hasArg argument)
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Option Hub::getOption(char key) const
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{
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addShortOption(shortKey, argument);
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addLongOption(shortKey, longKey, argument);
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return _arguments.count(key) && _arguments.at(key).first ? _arguments.at(key).second : Option();
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}
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void ArgPars::addNullKey()
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Hub::~Hub()
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{
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struct option *temp = new struct option[++sizeLongOption];
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for (size_t i = 0; i < sizeLongOption - 1; ++i)
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temp[i] = longOptions[i];
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temp[sizeLongOption - 1] = option
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{ nullptr, 0, nullptr, 0 };
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delete[] longOptions;
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longOptions = temp;
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delete[] _shortOptions;
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}
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bool ArgPars::checkKey(const char shortKey)
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{
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return cfg.count(shortKey) > 0 && cfg[shortKey].first;
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}
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std::string ArgPars::getValue(const char shortKey)
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{
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if (cfg.count(shortKey) && cfg[shortKey].first)
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{
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if (cfg[shortKey].second.size())
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return cfg[shortKey].second.front();
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}
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return {};
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}
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std::vector<std::string> ArgPars::getValues(const char shortKey)
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{
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if (cfg.count(shortKey) && cfg[shortKey].first)
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return cfg[shortKey].second;
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return {};
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}
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76
argpars.hpp
76
argpars.hpp
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@ -7,36 +7,66 @@
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#pragma once
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#include <iostream>
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#include <getopt.h>
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#include <vector>
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#include <string>
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#include <cstring>
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#include <map>
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class ArgPars
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#include <boost/range/adaptors.hpp>
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#include <iostream>
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namespace args
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{
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enum hasArg
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{
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NO, REQUIRED, OPTIONAL
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};
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typedef std::vector<std::string> (*_handler)(const std::vector<std::string>&);
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class ConfigOption
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{
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private:
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typedef void (*cPtr)();
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char *_longParameter;
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const char _shortParameter;
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const hasArg _ha;
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const _handler _h;
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public:
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enum hasArg {NO, REQUIRED, OPTIONAL};
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ArgPars(cPtr callback = nullptr, bool silencemode = true);
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void readArguments(int argc, char *argv[]);
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void addKey(const char shortKey, const std::string &longKey, hasArg argument);
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bool checkKey(const char shortKey);
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std::string getValue(const char shortKey);
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std::vector<std::string> getValues(const char shortKey);
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private:
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struct option *longOptions;
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size_t sizeLongOption;
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char* shortOptions;
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size_t sizeShortOption;
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std::map<char, std::pair<bool, std::vector<std::string>>> cfg;
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cPtr _callback;
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void addShortOption(const char shortKey, hasArg argument);
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struct option createNewOption(const char shortKey, const std::string &longKey, hasArg argument);
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void addLongOption(const char shortKey, const std::string &longKey, hasArg argument);
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void addNullKey();
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ConfigOption(const std::string &longParameter, const char shortParameter, const hasArg ha, _handler h = nullptr);
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const char* getLongParameter() const;
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const char& getShortParameter() const;
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const hasArg& getPresenceArgument() const;
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const _handler getHandler() const;
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};
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class Option
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{
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private:
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_handler _h;
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std::vector<std::string> _values;
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std::vector<std::string> _handling() const;
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public:
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Option(const _handler h = nullptr);
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void push(const std::string &value);
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std::vector<std::string> getValues(bool handling = false);
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};
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class Hub
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{
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private:
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struct option *_longOptions;
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char *_shortOptions;
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std::map<char, std::pair<bool, Option>> _arguments;
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void _createArguments(const std::vector<ConfigOption> &options, bool silence);
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public:
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Hub(const std::vector<ConfigOption> &options, bool silence = true);
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void readArguments(int argc, char *argv[], void (*_callback)() = nullptr);
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Option getOption(char key) const;
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~Hub();
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};
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}
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