Add command line flag processing.
This commit is contained in:
parent
e80f597ec8
commit
4d2abcf434
2
Arena.cc
2
Arena.cc
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@ -346,7 +346,7 @@ uint8_t &
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Arena::operator[](size_t index)
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{
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if (index > this->size) {
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#if defined(SCSL_DESKTOP_BUILD) and !defined(SCSL_NO_ASSERT)
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#if defined(SCSL_DESKTOP_BUILD) and !defined(SCSL_NOEXCEPT)
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throw std::range_error("index out of range");
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#else
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abort();
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@ -330,7 +330,7 @@ uint8_t &
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Buffer::operator[](size_t index)
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{
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if (index > this->length) {
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#if defined(SCSL_DESKTOP_BUILD) and !defined(SCSL_NO_ASSERT)
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#if defined(SCSL_DESKTOP_BUILD) and !defined(SCSL_NOEXCEPT)
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throw std::range_error("array index out of bounds");
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#else
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abort();
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@ -5,6 +5,7 @@ if (${DOXYGEN_FOUND})
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set(DOXYGEN_GENERATE_MAN YES)
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set(DOXYGEN_GENERATE_LATEX YES)
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#set(DOXYGEN_EXTRACT_ALL YES)
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message(STATUS "Doxygen found, building docs.")
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doxygen_add_docs(scsl_docs
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${HEADER_FILES} ${SOURCE_FILES}
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@ -1,6 +1,6 @@
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cmake_minimum_required(VERSION 3.25)
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cmake_minimum_required(VERSION 3.22)
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project(scsl LANGUAGES CXX
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VERSION 0.1.0
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VERSION 0.1.1
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DESCRIPTION "Shimmering Clarity Standard Library")
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set(CMAKE_CXX_STANDARD 14)
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@ -33,6 +33,7 @@ set(HEADER_FILES scsl.h
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Buffer.h
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Dictionary.h
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Exceptions.h
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Flag.h
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StringUtil.h
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TLV.h
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Test.h
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@ -45,6 +46,7 @@ set(SOURCE_FILES
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Commander.h
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Dictionary.cc
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Exceptions.cc
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Flag.cc
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StringUtil.cc
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TLV.cc
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Test.cc
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@ -66,6 +68,10 @@ target_link_libraries(phonebook scsl)
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include(CTest)
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enable_testing()
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add_executable(buffer_test bufferTest.cc)
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target_link_libraries(buffer_test scsl)
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add_test(bufferTest buffer_test)
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add_executable(tlv_test tlvTest.cc)
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target_link_libraries(tlv_test scsl)
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add_test(tlvTest tlv_test)
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@ -74,9 +80,9 @@ add_executable(dictionary_test dictionaryTest.cc)
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target_link_libraries(dictionary_test scsl)
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add_test(dictionaryTest dictionary_test)
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add_executable(buffer_test bufferTest.cc)
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target_link_libraries(buffer_test scsl)
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add_test(bufferTest buffer_test)
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add_executable(flag_test flagTest.cc)
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target_link_libraries(flag_test scsl)
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add_test(flagTest flag_test)
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add_executable(stringutil_test stringutil_test.cc)
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target_link_libraries(stringutil_test scsl)
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@ -94,7 +100,7 @@ add_custom_target(cloc
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COMMAND cloc ${SOURCE_FILES} ${HEADER_FILES}
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WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
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add_custom_target(deploy-docs
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COMMAND rsync --progress -auvz ${CMAKE_CURRENT_BINARY_DIR}/html/* docs.shimmering-clarity.net:sites/cc/
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COMMAND rsync --delete-after --progress -auvz ${CMAKE_CURRENT_BINARY_DIR}/html/* docs.shimmering-clarity.net:sites/cc/${PROJECT_NAME}/
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DEPENDS scsl_docs
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)
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235
Flag.cc
235
Flag.cc
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@ -30,18 +30,45 @@
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#include <vector>
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#include "Flag.h"
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#include "StringUtil.h"
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namespace klib {
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namespace scsl {
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static const std::regex isFlag("^-[a-zA-Z0-9]+$",
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static const std::regex isFlag("^--?[a-zA-Z0-9][a-zA-Z0-9-_]*$",
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std::regex_constants::nosubs);
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Flag::Flag(FlagType fType, std::string fName, std::string fDescription)
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: Type(fType), WasSet(false), Name(fName), Description(fDescription)
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std::string
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ParseStatusToString(ParseStatus status)
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{
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switch (status) {
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case ParseStatus::OK:
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return "OK";
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case ParseStatus::EndOfFlags:
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return "end of flags";
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case ParseStatus::NotRegistered:
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return "flag not registered";
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case ParseStatus::NotEnoughArgs:
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return "not enough args passed to flags";
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default:
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return "unknown/unspecified parse error";
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}
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}
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Flag *
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NewFlag(FlagType fType, std::string fName, std::string fDescription)
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{
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auto flag = new Flag;
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flag->Type = fType;
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flag->WasSet = false;
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flag->Name = fName;
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flag->Description = fDescription;
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flag->Value = FlagValue{};
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return flag;
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}
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@ -68,16 +95,79 @@ Flags::Register(std::string fName, FlagType fType, std::string fDescription)
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return false;
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}
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auto flag = new Flag;
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flag->Type = fType;
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flag->WasSet = false;
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flag->name = name;
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this->desription = fDescription;
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auto flag = NewFlag(fType, fName, fDescription);
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this->flags[fName] = flag;
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return true;
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}
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bool
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Flags::Register(std::string fName, bool defaultValue, std::string fDescription)
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{
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if (!this->Register(fName, FlagType::Boolean, fDescription)) {
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return false;
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}
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this->flags[fName]->Value.b = defaultValue;
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return true;
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}
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bool
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Flags::Register(std::string fName, int defaultValue, std::string fDescription)
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{
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if (!this->Register(fName, FlagType::Integer, fDescription)) {
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return false;
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}
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this->flags[fName]->Value.i = defaultValue;
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return true;
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}
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bool
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Flags::Register(std::string fName, unsigned int defaultValue, std::string fDescription)
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{
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if (!this->Register(fName, FlagType::UnsignedInteger, fDescription)) {
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return false;
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}
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this->flags[fName]->Value.u = defaultValue;
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return true;
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}
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bool
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Flags::Register(std::string fName, size_t defaultValue, std::string fDescription)
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{
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if (!this->Register(fName, FlagType::SizeT, fDescription)) {
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return false;
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}
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this->flags[fName]->Value.size = defaultValue;
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return true;
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}
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bool
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Flags::Register(std::string fName, std::string defaultValue, std::string fDescription)
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{
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if (!this->Register(fName, FlagType::String, fDescription)) {
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return false;
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}
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this->flags[fName]->Value.s = new std::string(defaultValue);
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return true;
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}
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size_t
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Flags::Size()
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{
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return this->flags.size();
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}
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Flag *
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Flags::Lookup(std::string fName)
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{
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@ -85,18 +175,19 @@ Flags::Lookup(std::string fName)
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return nullptr;
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}
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return this->flags[fName];
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}
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OptFlagValue
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Flags::ValueOf(std::string fName)
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bool
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Flags::ValueOf(std::string fName, FlagValue &value)
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{
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if (this->flags.count(fName)) {
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return std::nullopt;
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return false;
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}
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return OptFlagValue(this->flags[fName]->Value);
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value = this->flags[fName]->Value;
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return true;
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}
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@ -106,6 +197,8 @@ Flags::parseArg(int argc, char **argv, int &index)
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{
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std::string arg(argv[index]);
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U::S::TrimWhitespace(arg);
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index++;
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if (!std::regex_search(arg, isFlag)) {
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return ParseStatus::EndOfFlags;
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@ -116,15 +209,33 @@ Flags::parseArg(int argc, char **argv, int &index)
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}
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auto flag = flags[arg];
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if (flag->Type == FlagType::Boolean) {
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switch (flag->Type) {
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case FlagType::Boolean:
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flag->WasSet = true;
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flag->Value.b = true;
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return ParseStatus::OK;
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}
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switch (flag->Type) {
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case FlagType::Integer:
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flag->WasSet = true;
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flag->Value.i = std::stoi(argv[++index], 0, 0);
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return ParseStatus::OK;
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case FlagType::UnsignedInteger:
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flag->WasSet = true;
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flag->Value.u = static_cast<unsigned int>(std::stoi(argv[index++], 0, 0));
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return ParseStatus::OK;
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case FlagType::String:
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flag->WasSet = true;
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flag->Value.s = new std::string(argv[index++]);
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return ParseStatus::OK;
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case FlagType::SizeT:
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flag->WasSet = true;
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flag->Value.size = static_cast<size_t>(std::stoull(argv[index++]));
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return ParseStatus::OK;
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default:
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throw std::runtime_error("not handled");
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#if defined(NDEBUG) or defined(SCSL_NOEXCEPT)
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return ParseStatus::Unknown;
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#else
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throw std::runtime_error("unhandled type");
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#endif
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}
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return ParseStatus::OK;
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@ -148,12 +259,16 @@ Flags::Parse(int argc, char **argv)
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index++;
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}
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continue;
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case ParseStatus::EndOfFlags:
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case ParseStatus::NotEnoughArgs:
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case ParseStatus::NotRegistered:
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// fall through //
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return result;
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default:
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throw runtime_error("unhandled parse state");
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#if defined(NDEBUG) or defined(SCSL_NOEXCEPT)
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return ParseStatus::Unknown;
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#else
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throw std::runtime_error("unhandled parse state");
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#endif
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}
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}
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@ -176,16 +291,80 @@ Flags::Args()
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}
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bool
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Flags::GetBool(std::string name, bool &flagValue)
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Flag *
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Flags::checkGetArg(std::string fName, FlagType eType)
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{
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if (this->flags[name] == 0) {
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return false;
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if (this->flags[fName] == 0) {
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return nullptr;
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}
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return std::get<bool>(this->flags[name]->Value);
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auto flag = this->flags[fName];
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if (flag == nullptr) {
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return nullptr;
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}
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if (flag->Type != eType) {
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return nullptr;
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}
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return flag;
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}
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} // namespace klib
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bool
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Flags::GetBool(std::string fName, bool &flagValue)
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{
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auto flag = this->checkGetArg(fName, FlagType::Boolean);
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flagValue = flag->Value.b;
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return flag->WasSet;
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}
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bool
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Flags::GetInteger(std::string fName, int &flagValue)
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{
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auto flag = this->checkGetArg(fName, FlagType::Integer);
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flagValue = flag->Value.i;
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return flag->WasSet;
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}
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bool
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Flags::GetUnsignedInteger(std::string fName, unsigned int &flagValue)
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{
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auto flag = this->checkGetArg(fName, FlagType::UnsignedInteger);
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flagValue = flag->Value.u;
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return flag->WasSet;
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}
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bool
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Flags::GetSizeT(std::string fName, std::size_t &flagValue)
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{
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auto flag = this->checkGetArg(fName, FlagType::SizeT);
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flagValue = flag->Value.size;
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return flag->WasSet;
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}
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bool
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Flags::GetString(std::string fName, std::string &flagValue)
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{
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auto flag = this->checkGetArg(fName, FlagType::String);
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if (flag->Value.s == nullptr) {
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return false;
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}
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flagValue = *(flag->Value.s);
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return flag->WasSet;
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}
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} // namespace scsl
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121
Flag.h
121
Flag.h
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@ -26,49 +26,56 @@
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#include <cstdint>
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#include <functional>
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#include <map>
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#include <optional>
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#include <string>
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#include <variant>
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#include <vector>
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namespace klib {
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namespace scsl {
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/// FlagType indicates the value held in a FlagValue.
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enum class FlagType : uint8_t {
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Unknown = 0,
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Boolean = 1,
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Integer = 2,
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UnsignedInteger = 3,
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String = 4,
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Unknown = 0,
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Boolean = 1,
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Integer = 2, ///< int32_t
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UnsignedInteger = 3, ///< uint32_t
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SizeT = 4, ///< size_t
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String = 5,
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};
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enum class ParseStatus : uint8_t {
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OK = 0,
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EndOfFlags = 1,
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NotRegistered = 2,
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NotEnoughArgs = 3,
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Unknown = 0,
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OK = 1,
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EndOfFlags = 2,
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NotRegistered = 3,
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NotEnoughArgs = 4,
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};
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typedef std::variant<
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std::string *,
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bool *,
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int64_t *,
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uint64_t *> FlagValue;
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std::string
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ParseStatusToString(ParseStatus status);
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struct Flag {
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Flag(FlagType fType, std::string fName, std::string fDescription);
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typedef union {
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unsigned int u;
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int i;
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std::size_t size;
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std::string *s;
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bool b;
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} FlagValue;
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FlagType Type;
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bool WasSet;
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std::string Name;
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std::string Description;
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FlagValue Value;
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};
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typedef std::optional<FlagValue> OptFlagValue;
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typedef struct {
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FlagType Type;
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bool WasSet;
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std::string Name;
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std::string Description;
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FlagValue Value;
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} Flag;
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Flag *
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NewFlag(FlagType fType, std::string fName, std::string fDescription);
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class Flags {
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@ -76,36 +83,52 @@ public:
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Flags(std::string fName);
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Flags(std::string fName, std::string fDescription);
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bool Register(std::string fName,
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FlagType fType,
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std::string fDescription);
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Flag *Lookup(std::string fName);
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OptFlagValue
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ValueOf(std::string fName);
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bool Register(std::string fName,
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FlagType fType,
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std::string fDescription);
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bool Register(std::string fName,
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bool defaultValue,
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std::string fDescription);
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bool Register(std::string fName,
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int defaultValue,
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std::string fDescription);
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bool Register(std::string fName,
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unsigned int defaultValue,
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std::string fDescription);
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bool Register(std::string fName,
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size_t defaultValue,
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std::string fDescription);
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bool Register(std::string fName,
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std::string defaultValue,
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std::string fDescription);
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size_t Size();
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Flag *Lookup(std::string fName);
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bool ValueOf(std::string fName, FlagValue &value);
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int Parse(int argc, char **argv);
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ParseStatus Parse(int argc, char **argv);
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void Usage(std::ostream &os, int exitCode);
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void Usage(std::ostream &os, int exitCode);
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size_t NumArgs();
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std::vector<std::string> Args();
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std::string Arg(int index);
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size_t NumArgs();
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std::vector<std::string> Args();
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std::string Arg(int index);
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bool GetBool(std::string name, bool &flagValue);
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// bool GetUnsignedInteger(std::string name, uint64_t &flagValue)
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// bool GetInteger(std::string name, int64_t &flagValue)
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// bool GetString(std::string name, std::string &flagValue)
|
||||
bool GetBool(std::string fName, bool &flagValue);
|
||||
bool GetUnsignedInteger(std::string fName, unsigned int &flagValue);
|
||||
bool GetInteger(std::string fName, int &flagValue);
|
||||
bool GetString(std::string fName, std::string &flagValue);
|
||||
bool GetSizeT(std::string fName, std::size_t &flagValue);
|
||||
|
||||
|
||||
private:
|
||||
ParseStatus parseArg(int argc, char **argv, int &index);
|
||||
ParseStatus parseArg(int argc, char **argv, int &index);
|
||||
Flag *checkGetArg(std::string fName, FlagType eType);
|
||||
|
||||
std::string name;
|
||||
std::string description;
|
||||
std::vector<std::string> args;
|
||||
std::map<std::string, Flag *> flags;
|
||||
std::string name;
|
||||
std::string description;
|
||||
std::vector<std::string> args;
|
||||
std::map<std::string, Flag *> flags;
|
||||
};
|
||||
|
||||
|
||||
|
||||
} // namespace klib
|
||||
} // namespace scsl
|
||||
|
|
4
Test.cc
4
Test.cc
|
@ -15,7 +15,7 @@ namespace scsl {
|
|||
void
|
||||
TestAssert(bool condition, std::string message)
|
||||
{
|
||||
#if defined(NDEBUG) || defined(SCSL_NO_ASSERT)
|
||||
#if defined(NDEBUG) || defined(SCSL_NOEXCEPT)
|
||||
if (!condition) {
|
||||
throw AssertionFailed(message);
|
||||
}
|
||||
|
@ -35,7 +35,7 @@ TestAssert(bool condition)
|
|||
if (condition) {
|
||||
return;
|
||||
}
|
||||
#if defined(SCSL_NO_ASSERT)
|
||||
#if defined(SCSL_NOEXCEPT)
|
||||
std::cerr << "Assertion failed!\n";
|
||||
#else
|
||||
std::stringstream msg;
|
||||
|
|
2
Test.h
2
Test.h
|
@ -29,7 +29,7 @@ void TestAssert(bool condition);
|
|||
/// If NDEBUG is set, TestAssert will throw an exception if condition is false.
|
||||
/// Otherwise, it calls assert after printing the message.
|
||||
///
|
||||
/// In addition to NDEBUG, SCSL_NO_ASSERT will suppress assertions.
|
||||
/// In addition to NDEBUG, SCSL_NOEXCEPT will suppress assertions.
|
||||
///
|
||||
/// \throws AssertionFailed
|
||||
///
|
||||
|
|
|
@ -0,0 +1,59 @@
|
|||
//
|
||||
// Created by kyle on 10/15/23.
|
||||
//
|
||||
|
||||
|
||||
#include <iostream>
|
||||
#include "Flag.h"
|
||||
#include "Test.h"
|
||||
|
||||
|
||||
using namespace scsl;
|
||||
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
bool testFlag = false;
|
||||
size_t testSize = 0;
|
||||
unsigned int testUnsigned = 0;
|
||||
int testInteger = 0;
|
||||
std::string testString;
|
||||
|
||||
auto flags = new Flags("flag_test", "this is a test of the flag functionality.");
|
||||
flags->Register("-b", FlagType::Boolean, "test boolean");
|
||||
flags->Register("-s", FlagType::String, "test string");
|
||||
flags->Register("-u", (unsigned int)42, "test unsigned integer");
|
||||
flags->Register("-i", -42, "test integer");
|
||||
flags->Register("-size", FlagType::SizeT, "test size_t");
|
||||
TestAssert(flags->Size() == 5, "flags weren't registered");
|
||||
|
||||
auto status = flags->Parse(argc, argv);
|
||||
|
||||
if (status != ParseStatus::OK) {
|
||||
std::cerr << "failed to parse flags: " << ParseStatusToString(status) << "\n";
|
||||
exit(1);
|
||||
}
|
||||
|
||||
auto wasSet = flags->GetBool("-b", testFlag);
|
||||
std::cout << " (bool) test flag was set: " << wasSet << "\n";
|
||||
std::cout << " (bool) test flag value: " << testFlag << "\n";
|
||||
|
||||
wasSet = flags->GetInteger("-i", testInteger);
|
||||
std::cout << " (int) test flag was set: " << wasSet << "\n";
|
||||
std::cout << " (int) test flag value: " << testInteger << "\n";
|
||||
|
||||
wasSet = flags->GetUnsignedInteger("-u", testUnsigned);
|
||||
std::cout << " (uint) test flag was set: " << wasSet << "\n";
|
||||
std::cout << " (uint) test flag value: " << testUnsigned << "\n";
|
||||
|
||||
wasSet = flags->GetSizeT("-size", testSize);
|
||||
std::cout << "(size_t) test flag was set: " << wasSet << "\n";
|
||||
std::cout << "(size_t) test flag value: " << testSize << "\n";
|
||||
|
||||
wasSet = flags->GetString("-s", testString);
|
||||
std::cout << "(string) test flag was set: " << wasSet << "\n";
|
||||
std::cout << "(string) test flag value: " << testString << "\n";
|
||||
|
||||
return 0;
|
||||
}
|
Loading…
Reference in New Issue