doc: update documentation
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namespace YYCC::ArgParser {
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/**
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\page arg_parser Universal Argument Parser
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Universal argument parser provides an universal way to parsing command line arguments.
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YYCC::ArgParser provides an universal way to parsing command line arguments.
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Universal argument parser has similar design with universal config manager,
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it is highly recommand that read \ref config_manager chapter first,
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@ -11,6 +12,54 @@ because you will have a clear understanding of this namespace after reading univ
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There is an example about how to use universal argument parser.
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In following content, we will describe it in detail.
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\code{.cpp}
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class TestArgParser {
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public:
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TestArgParser() :
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m_IntArgument(YYCC_U8("int"), YYCC_U8_CHAR('i'), YYCC_U8("integral argument"), YYCC_U8("114514")),
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m_FloatArgument(nullptr, YYCC_U8_CHAR('f'), nullptr, nullptr, true),
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m_StringArgument(YYCC_U8("string"), YYCC::ArgParser::AbstractArgument::NO_SHORT_NAME, nullptr, nullptr, true),
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m_BoolArgument(nullptr, YYCC_U8_CHAR('b'), nullptr),
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m_ClampedFloatArgument(YYCC_U8("clamped-float"), YYCC::ArgParser::AbstractArgument::NO_SHORT_NAME, nullptr, nullptr, true, YYCC::Constraints::GetMinMaxRangeConstraint<float>(-1.0f, 1.0f)),
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m_OptionContext(YYCC_U8("TestArgParser"), YYCC_U8("This is the testbench of argument parser."), {
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&m_IntArgument, &m_FloatArgument, &m_StringArgument,
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&m_BoolArgument, &m_ClampedFloatArgument
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}) {}
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~TestArgParser() {}
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YYCC::ArgParser::NumberArgument<int32_t> m_IntArgument;
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YYCC::ArgParser::NumberArgument<float> m_FloatArgument;
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YYCC::ArgParser::StringArgument m_StringArgument;
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YYCC::ArgParser::SwitchArgument m_BoolArgument;
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YYCC::ArgParser::NumberArgument<float> m_ClampedFloatArgument;
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YYCC::ArgParser::OptionContext m_OptionContext;
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};
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// Initialize argument parser.
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TestArgParser test;
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// Get argument list for parsing from standard C main function.
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auto al = YYCC::ArgParser::ArgumentList::CreateFromStd(argc, argv);
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// Start parsing
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test.Parse(al);
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// Get captured string argument
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if (test.m_StringArgument.IsCaptured())
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auto val = test.m_StringArgument.Get();
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\endcode
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These code can resolve following command line
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\code{.sh}
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exec -i 114514 -f 2.0 --string fuck -b --clamped-float 0.5
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\endcode
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For convenience, we define following terms used in this article.
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\li Every items in command line: Argument.
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\li \c -i, \c --clamped-float: \b Switch / \b Option. the argument starts with dash or double dash.
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\li \c 114514: \b Value. the value of switch.
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\section arg_parser__argument Argument
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\subsection arg_parser__argument__presets Argument Presets
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@ -35,6 +84,18 @@ It can not hold any value.
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\section arg_parser__option_context Option Context
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Please note any unknow argument will let the parser return false.
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This is different with other argument parsers.
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In other common argument parsers,
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they will collect all unknow argument ad positional argument,
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or just simply ignore them.
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OptionContext also will not add \c -h or \c --help switch automatically.
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This is also differnent with other parsers.
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You should manually add it.
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However, OptionContext provide a universal help print function.
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You can directly call it to output help text if you needed (fail to parse or user order help).
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\section arg_parser__limitation Limitation
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This universal argument parser is a tiny parser.
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@ -44,7 +105,7 @@ In following content I will tell you some syntaxes which this parser \b not acce
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\subsection arg_parser__limitation__flag_combination Flag Combination
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\code{sh}
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\code{.sh}
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exec -l -s -h
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exec -lsh
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\endcode
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@ -54,7 +115,7 @@ You must write these flags independently.
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\subsection arg_parser__limitation__equal_symbol Equal Symbol
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\code
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\code{.sh}
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exec --value 114514
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exec --value=114514
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exec --value:114514
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@ -66,7 +127,7 @@ You must write value after the argument immediately please.
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\subsection arg_parser__limitation__variable_argument Variable Argument
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\code
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\code{.sh}
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exec -DSOME_VARABLE=SOME_VALUE
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exec -D SOME_VARIABLE=SOME_VALUE
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\endcode
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@ -74,4 +135,22 @@ exec -D SOME_VARIABLE=SOME_VALUE
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Parser only accept second line.
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However you nned to write a custom argument or constraint to holding this value.
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\subsection arg_parser__limitation__switch_dependency Switch Dependency
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\code{.sh}
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exec --action-a --action-b
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\endcode
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For command line written above,
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if you hope \c --action-a and \c --action-b is exclusive,
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or \c --action-b only be valid if \c --action-a specified,
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you should manually implement this.
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Parser don't have such features to process this switch dependency.
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The thing you need to do is set these switches are \b not optional.
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And after parser do a success parsing,
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manually calling AbstractArgument::IsCaptured to fetch whether corresponding switches are captured,
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then do your personal dependency check.
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*/
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}
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@ -1,8 +1,9 @@
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namespace YYCC::ConfigManager {
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/**
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\page config_manager Universal Config Manager
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Universal config manager give programmer an universal way to manage its program settings.
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YYCC::ConfigManager give programmer an universal way to manage its program settings.
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There is an example about how to use universal config manager.
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In following content, we will describe it in detail.
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@ -32,11 +33,11 @@ public:
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YYCC::ConfigManager::CoreManager m_CoreManager;
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};
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// init cfg manager
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// Initialize config manager
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TestConfigManager test;
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// load string
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// Load settings.
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test.m_CoreManager.Load()
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// get string value
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// Get string setting value.
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auto val = test.m_StringSetting.Get();
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\endcode
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@ -49,9 +50,9 @@ Each setting describe a single configuration entry.
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We currently provide 2 setting preset classes which you can directly use.
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\li YYCC::ConfigManager::NumberSetting: The setting storing a number inside.
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\li NumberSetting: The setting storing a number inside.
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It is a template class. Support all arithmetic and enum types (integral, floating point, bool, enum).
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\li YYCC::ConfigManager::StringSetting: The setting storing a string inside.
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\li StringSetting: The setting storing a string inside.
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When constructing these settings,
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you need to provide its unique name which will be used when saving to file or reading from file.
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@ -67,13 +68,13 @@ See \ref constraints chapters to know how we provide constraints.
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In most cases, the combination use of setting presets and constraints is enough.
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However, if you still are urge to create your personal setting,
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please inherit YYCC::ConfigManager::AbstractSetting and implement essential class functions.
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please inherit AbstractSetting and implement essential class functions.
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For the class functions you need to implement,
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please refer to our setting presets, YYCC::ConfigManager::NumberSetting and YYCC::ConfigManager::StringSetting.
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please refer to our setting presets, NumberSetting and StringSetting.
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\section config_manager__core_manager Core Manager
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YYCC::ConfigManager::CoreManager manage a collection of settings.
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CoreManager manage a collection of settings.
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And have responsibility to reading and writing config file.
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We highly suggest that you create a personal config manager class like example does.
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@ -93,3 +94,4 @@ Otherwise, core manager will try to read config file and do proper migration if
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The last argument is an initializer list which contain the \b pointer to all settings this manager managed.
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*/
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}
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namespace YYCC::Constraints {
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/**
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\page constraints Constraints
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YYCC::Constraints namespace provide YYCC::Constraints::Constraint struct declaration
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YYCC::Constraints namespace provide Constraint struct declaration
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and various common constraint generator function.
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This namespace is specifically used by YYCC::ConfigManager and YYCC::ArgParser namespaces.
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@ -10,12 +11,12 @@ See \ref config_manager chapter and \ref arg_parser chapter for how to utlize th
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\section constraints__prototype Prototype
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YYCC::Constraints::Constraint instruct library how check whether given value is in range,
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Constraint instruct library how check whether given value is in range,
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and how to clamp it if it is invalid.
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For example, you can use constraint to limit a number in given minimum maximum value,
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or limit a string in specific format by using regex and etc.
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YYCC::Constraints::Constraint is a template struct.
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Constraint is a template struct.
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The argument of template is the underlying data type which need to be checked.
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The struct with different template argument is not compatible.
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@ -25,23 +26,24 @@ which is used for detecting whether given value is in range / valid.
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\subsection constraints__presets Constraint Presets
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YYCC::Constraints provides some constraint presets which are commonly used.
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All functions inside this namespace will return a YYCC::Constraints::Constraint instance,
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All functions inside this namespace will return a Constraint instance,
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and you can directly use it.
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There is a list of all provided functions:
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\li YYCC::Constraints::GetMinMaxRangeConstraint: Limit the number value in given minimum maximum value range (inclusive).
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\li YYCC::Constraints::GetEnumEnumerationConstraint: Limit the enum value by given all possible value set.
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\li YYCC::Constraints::GetStringEnumerationConstraint: Limit the string by given all possible value set.
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\li GetMinMaxRangeConstraint(): Limit the number value in given minimum maximum value range (inclusive).
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\li GetEnumEnumerationConstraint(): Limit the enum value by given all possible value set.
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\li GetStringEnumerationConstraint(): Limit the string by given all possible value set.
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\subsection config_manager__constraint__custom Custom Constraint
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For creating your personal constraint,
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you need to create YYCC::Constraints::Constraint instance manually.
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you need to create Constraint instance manually.
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You can browse all existing constraint preset functions code for know how to write it.
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The things you need to do is simple.
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First, you need decide the template argument of YYCC::Constraints::Constraint.
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Second, you need assign class member of YYCC::Constraints::Constraint by C++ lambda syntax.
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First, you need decide the template argument of Constraint.
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Second, you need assign class member of Constraint by C++ lambda syntax.
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*/
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}
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@ -29,12 +29,12 @@ During programming, I found Windows is super lack in UTF8 supports.
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Programmer loves UTF8, because it can handle all charcaters over the world in one encoding and is still compatible with C-Style string.
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However, Windows use a weird way to achieve internationalization, 2 different function trailing, A and W for legacy code and modern code respectively.
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The worst things is that the char type W trailing function used, \c WCHAR, is defined as 2 bytes long, not 4 bytes long as Linux does (\c wchar_t).
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It mean that one emoji charcater will be torn into 2 \c WCHAR on Windows because emoji code unit is higher than the manimum value of \c WCHAR.
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It mean that one emoji charcater will be torn into 2 \c WCHAR on Windows because emoji code unit is higher than the maximum value of \c WCHAR.
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Also, there are various issues which should not be presented.
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For example, Microsoft invents various \e safe standard library functions to prevent possible overflow issues raised by \c std::fgets and etc.
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also, MSVC may throw weird error when you using some specific standard library functions.
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You need to define some weird macro to disable this shitty behavior.
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You need to define some weird macros to disable this shitty behavior.
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There are various non-standard issue you may faced on Windows programming.
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All in all, programming on Windows is a tough work.
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@ -14,7 +14,7 @@ namespace YYCC::Constraints {
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/**
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* @brief The constraint applied to settings to limit its stored value.
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* @tparam _Ty The internal data type stroed in corresponding setting.
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* @tparam _Ty The data type this constraint need to be processed with.
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*/
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template<typename _Ty>
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struct Constraint {
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