diff options
Diffstat (limited to 'build/options.cxx')
| -rw-r--r-- | build/options.cxx | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/build/options.cxx b/build/options.cxx new file mode 100644 index 0000000..0d4248d --- /dev/null +++ b/build/options.cxx @@ -0,0 +1,518 @@ +// -*- C++ -*- +// +// This file was generated by CLI, a command line interface +// compiler for C++. +// + +// Begin prologue. +// +// +// End prologue. + +#include <build/options> + +#include <map> +#include <set> +#include <string> +#include <vector> +#include <ostream> +#include <sstream> + +namespace cli +{ + // unknown_option + // + unknown_option:: + ~unknown_option () throw () + { + } + + void unknown_option:: + print (::std::ostream& os) const + { + os << "unknown option '" << option ().c_str () << "'"; + } + + const char* unknown_option:: + what () const throw () + { + return "unknown option"; + } + + // unknown_argument + // + unknown_argument:: + ~unknown_argument () throw () + { + } + + void unknown_argument:: + print (::std::ostream& os) const + { + os << "unknown argument '" << argument ().c_str () << "'"; + } + + const char* unknown_argument:: + what () const throw () + { + return "unknown argument"; + } + + // missing_value + // + missing_value:: + ~missing_value () throw () + { + } + + void missing_value:: + print (::std::ostream& os) const + { + os << "missing value for option '" << option ().c_str () << "'"; + } + + const char* missing_value:: + what () const throw () + { + return "missing option value"; + } + + // invalid_value + // + invalid_value:: + ~invalid_value () throw () + { + } + + void invalid_value:: + print (::std::ostream& os) const + { + os << "invalid value '" << value ().c_str () << "' for option '" + << option ().c_str () << "'"; + } + + const char* invalid_value:: + what () const throw () + { + return "invalid option value"; + } + + // eos_reached + // + void eos_reached:: + print (::std::ostream& os) const + { + os << what (); + } + + const char* eos_reached:: + what () const throw () + { + return "end of argument stream reached"; + } + + // scanner + // + scanner:: + ~scanner () + { + } + + // argv_scanner + // + bool argv_scanner:: + more () + { + return i_ < argc_; + } + + const char* argv_scanner:: + peek () + { + if (i_ < argc_) + return argv_[i_]; + else + throw eos_reached (); + } + + const char* argv_scanner:: + next () + { + if (i_ < argc_) + { + const char* r (argv_[i_]); + + if (erase_) + { + for (int i (i_ + 1); i < argc_; ++i) + argv_[i - 1] = argv_[i]; + + --argc_; + argv_[argc_] = 0; + } + else + ++i_; + + return r; + } + else + throw eos_reached (); + } + + void argv_scanner:: + skip () + { + if (i_ < argc_) + ++i_; + else + throw eos_reached (); + } + + template <typename X> + struct parser + { + static void + parse (X& x, scanner& s) + { + std::string o (s.next ()); + + if (s.more ()) + { + std::string v (s.next ()); + std::istringstream is (v); + if (!(is >> x && is.eof ())) + throw invalid_value (o, v); + } + else + throw missing_value (o); + } + }; + + template <> + struct parser<bool> + { + static void + parse (bool& x, scanner& s) + { + s.next (); + x = true; + } + }; + + template <> + struct parser<std::string> + { + static void + parse (std::string& x, scanner& s) + { + const char* o (s.next ()); + + if (s.more ()) + x = s.next (); + else + throw missing_value (o); + } + }; + + template <typename X> + struct parser<std::vector<X> > + { + static void + parse (std::vector<X>& c, scanner& s) + { + X x; + parser<X>::parse (x, s); + c.push_back (x); + } + }; + + template <typename X> + struct parser<std::set<X> > + { + static void + parse (std::set<X>& c, scanner& s) + { + X x; + parser<X>::parse (x, s); + c.insert (x); + } + }; + + template <typename K, typename V> + struct parser<std::map<K, V> > + { + static void + parse (std::map<K, V>& m, scanner& s) + { + std::string o (s.next ()); + + if (s.more ()) + { + std::string ov (s.next ()); + std::string::size_type p = ov.find ('='); + + if (p == std::string::npos) + { + K k = K (); + + if (!ov.empty ()) + { + std::istringstream ks (ov); + + if (!(ks >> k && ks.eof ())) + throw invalid_value (o, ov); + } + + m[k] = V (); + } + else + { + K k = K (); + V v = V (); + std::string kstr (ov, 0, p); + std::string vstr (ov, p + 1); + + if (!kstr.empty ()) + { + std::istringstream ks (kstr); + + if (!(ks >> k && ks.eof ())) + throw invalid_value (o, ov); + } + + if (!vstr.empty ()) + { + std::istringstream vs (vstr); + + if (!(vs >> v && vs.eof ())) + throw invalid_value (o, ov); + } + + m[k] = v; + } + } + else + throw missing_value (o); + } + }; + + template <typename X, typename T, T X::*M> + void + thunk (X& x, scanner& s) + { + parser<T>::parse (x.*M, s); + } +} + +#include <map> +#include <cstring> + +// options +// + +options:: +options () +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ +} + +options:: +options (int& argc, + char** argv, + bool erase, + ::cli::unknown_mode opt, + ::cli::unknown_mode arg) +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ + ::cli::argv_scanner s (argc, argv, erase); + _parse (s, opt, arg); +} + +options:: +options (int start, + int& argc, + char** argv, + bool erase, + ::cli::unknown_mode opt, + ::cli::unknown_mode arg) +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ + ::cli::argv_scanner s (start, argc, argv, erase); + _parse (s, opt, arg); +} + +options:: +options (int& argc, + char** argv, + int& end, + bool erase, + ::cli::unknown_mode opt, + ::cli::unknown_mode arg) +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ + ::cli::argv_scanner s (argc, argv, erase); + _parse (s, opt, arg); + end = s.end (); +} + +options:: +options (int start, + int& argc, + char** argv, + int& end, + bool erase, + ::cli::unknown_mode opt, + ::cli::unknown_mode arg) +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ + ::cli::argv_scanner s (start, argc, argv, erase); + _parse (s, opt, arg); + end = s.end (); +} + +options:: +options (::cli::scanner& s, + ::cli::unknown_mode opt, + ::cli::unknown_mode arg) +: help_ (), + version_ (), + v_ (), + verbose_ (0) +{ + _parse (s, opt, arg); +} + +void options:: +print_usage (::std::ostream& os) +{ + os << "--help Print usage information and exit." << ::std::endl; + + os << "--version Print version and exit." << ::std::endl; + + os << "-v Print actual commands being executed." << ::std::endl; + + os << "--verbose <level> Set the diagnostics verbosity to a level between 0 (disabled)" << ::std::endl + << " and 5 (lots of information)." << ::std::endl; +} + +typedef +std::map<std::string, void (*) (options&, ::cli::scanner&)> +_cli_options_map; + +static _cli_options_map _cli_options_map_; + +struct _cli_options_map_init +{ + _cli_options_map_init () + { + _cli_options_map_["--help"] = + &::cli::thunk< options, bool, &options::help_ >; + _cli_options_map_["--version"] = + &::cli::thunk< options, bool, &options::version_ >; + _cli_options_map_["-v"] = + &::cli::thunk< options, bool, &options::v_ >; + _cli_options_map_["--verbose"] = + &::cli::thunk< options, std::uint16_t, &options::verbose_ >; + } +}; + +static _cli_options_map_init _cli_options_map_init_; + +bool options:: +_parse (const char* o, ::cli::scanner& s) +{ + _cli_options_map::const_iterator i (_cli_options_map_.find (o)); + + if (i != _cli_options_map_.end ()) + { + (*(i->second)) (*this, s); + return true; + } + + return false; +} + +void options:: +_parse (::cli::scanner& s, + ::cli::unknown_mode opt_mode, + ::cli::unknown_mode arg_mode) +{ + bool opt = true; + + while (s.more ()) + { + const char* o = s.peek (); + + if (std::strcmp (o, "--") == 0) + { + s.skip (); + opt = false; + continue; + } + + if (opt && _parse (o, s)); + else if (opt && std::strncmp (o, "-", 1) == 0 && o[1] != '\0') + { + switch (opt_mode) + { + case ::cli::unknown_mode::skip: + { + s.skip (); + continue; + } + case ::cli::unknown_mode::stop: + { + break; + } + case ::cli::unknown_mode::fail: + { + throw ::cli::unknown_option (o); + } + } + + break; + } + else + { + switch (arg_mode) + { + case ::cli::unknown_mode::skip: + { + s.skip (); + continue; + } + case ::cli::unknown_mode::stop: + { + break; + } + case ::cli::unknown_mode::fail: + { + throw ::cli::unknown_argument (o); + } + } + + break; + } + } +} + +// Begin epilogue. +// +// +// End epilogue. + |