diff options
Diffstat (limited to 'libbuild2/script/builtin-options.cxx')
| -rw-r--r-- | libbuild2/script/builtin-options.cxx | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/libbuild2/script/builtin-options.cxx b/libbuild2/script/builtin-options.cxx index 9b91bd2..c27f266 100644 --- a/libbuild2/script/builtin-options.cxx +++ b/libbuild2/script/builtin-options.cxx @@ -923,6 +923,303 @@ namespace build2 return r; } + + // export_options + // + + export_options:: + export_options () + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + } + + export_options:: + export_options (int& argc, + char** argv, + bool erase, + ::build2::script::cli::unknown_mode opt, + ::build2::script::cli::unknown_mode arg) + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + ::build2::script::cli::argv_scanner s (argc, argv, erase); + _parse (s, opt, arg); + } + + export_options:: + export_options (int start, + int& argc, + char** argv, + bool erase, + ::build2::script::cli::unknown_mode opt, + ::build2::script::cli::unknown_mode arg) + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + ::build2::script::cli::argv_scanner s (start, argc, argv, erase); + _parse (s, opt, arg); + } + + export_options:: + export_options (int& argc, + char** argv, + int& end, + bool erase, + ::build2::script::cli::unknown_mode opt, + ::build2::script::cli::unknown_mode arg) + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + ::build2::script::cli::argv_scanner s (argc, argv, erase); + _parse (s, opt, arg); + end = s.end (); + } + + export_options:: + export_options (int start, + int& argc, + char** argv, + int& end, + bool erase, + ::build2::script::cli::unknown_mode opt, + ::build2::script::cli::unknown_mode arg) + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + ::build2::script::cli::argv_scanner s (start, argc, argv, erase); + _parse (s, opt, arg); + end = s.end (); + } + + export_options:: + export_options (::build2::script::cli::scanner& s, + ::build2::script::cli::unknown_mode opt, + ::build2::script::cli::unknown_mode arg) + : unset_ (), + unset_specified_ (false), + clear_ (), + clear_specified_ (false) + { + _parse (s, opt, arg); + } + + typedef + std::map<std::string, void (*) (export_options&, ::build2::script::cli::scanner&)> + _cli_export_options_map; + + static _cli_export_options_map _cli_export_options_map_; + + struct _cli_export_options_map_init + { + _cli_export_options_map_init () + { + _cli_export_options_map_["--unset"] = + &::build2::script::cli::thunk< export_options, vector<string>, &export_options::unset_, + &export_options::unset_specified_ >; + _cli_export_options_map_["-u"] = + &::build2::script::cli::thunk< export_options, vector<string>, &export_options::unset_, + &export_options::unset_specified_ >; + _cli_export_options_map_["--clear"] = + &::build2::script::cli::thunk< export_options, vector<string>, &export_options::clear_, + &export_options::clear_specified_ >; + _cli_export_options_map_["-c"] = + &::build2::script::cli::thunk< export_options, vector<string>, &export_options::clear_, + &export_options::clear_specified_ >; + } + }; + + static _cli_export_options_map_init _cli_export_options_map_init_; + + bool export_options:: + _parse (const char* o, ::build2::script::cli::scanner& s) + { + _cli_export_options_map::const_iterator i (_cli_export_options_map_.find (o)); + + if (i != _cli_export_options_map_.end ()) + { + (*(i->second)) (*this, s); + return true; + } + + return false; + } + + bool export_options:: + _parse (::build2::script::cli::scanner& s, + ::build2::script::cli::unknown_mode opt_mode, + ::build2::script::cli::unknown_mode arg_mode) + { + // Can't skip combined flags (--no-combined-flags). + // + assert (opt_mode != ::build2::script::cli::unknown_mode::skip); + + bool r = false; + bool opt = true; + + while (s.more ()) + { + const char* o = s.peek (); + + if (std::strcmp (o, "--") == 0) + { + opt = false; + s.skip (); + r = true; + continue; + } + + if (opt) + { + if (_parse (o, s)) + { + r = true; + continue; + } + + if (std::strncmp (o, "-", 1) == 0 && o[1] != '\0') + { + // Handle combined option values. + // + std::string co; + if (const char* v = std::strchr (o, '=')) + { + co.assign (o, 0, v - o); + ++v; + + int ac (2); + char* av[] = + { + const_cast<char*> (co.c_str ()), + const_cast<char*> (v) + }; + + ::build2::script::cli::argv_scanner ns (0, ac, av); + + if (_parse (co.c_str (), ns)) + { + // Parsed the option but not its value? + // + if (ns.end () != 2) + throw ::build2::script::cli::invalid_value (co, v); + + s.next (); + r = true; + continue; + } + else + { + // Set the unknown option and fall through. + // + o = co.c_str (); + } + } + + // Handle combined flags. + // + char cf[3]; + { + const char* p = o + 1; + for (; *p != '\0'; ++p) + { + if (!((*p >= 'a' && *p <= 'z') || + (*p >= 'A' && *p <= 'Z') || + (*p >= '0' && *p <= '9'))) + break; + } + + if (*p == '\0') + { + for (p = o + 1; *p != '\0'; ++p) + { + std::strcpy (cf, "-"); + cf[1] = *p; + cf[2] = '\0'; + + int ac (1); + char* av[] = + { + cf + }; + + ::build2::script::cli::argv_scanner ns (0, ac, av); + + if (!_parse (cf, ns)) + break; + } + + if (*p == '\0') + { + // All handled. + // + s.next (); + r = true; + continue; + } + else + { + // Set the unknown option and fall through. + // + o = cf; + } + } + } + + switch (opt_mode) + { + case ::build2::script::cli::unknown_mode::skip: + { + s.skip (); + r = true; + continue; + } + case ::build2::script::cli::unknown_mode::stop: + { + break; + } + case ::build2::script::cli::unknown_mode::fail: + { + throw ::build2::script::cli::unknown_option (o); + } + } + + break; + } + } + + switch (arg_mode) + { + case ::build2::script::cli::unknown_mode::skip: + { + s.skip (); + r = true; + continue; + } + case ::build2::script::cli::unknown_mode::stop: + { + break; + } + case ::build2::script::cli::unknown_mode::fail: + { + throw ::build2::script::cli::unknown_argument (o); + } + } + + break; + } + + return r; + } } } |