diff options
Diffstat (limited to 'libbutl/builtin-options.cxx')
-rw-r--r-- | libbutl/builtin-options.cxx | 331 |
1 files changed, 322 insertions, 9 deletions
diff --git a/libbutl/builtin-options.cxx b/libbutl/builtin-options.cxx index 5f43659..98a47cf 100644 --- a/libbutl/builtin-options.cxx +++ b/libbutl/builtin-options.cxx @@ -27,7 +27,7 @@ namespace butl // unknown_option // unknown_option:: - ~unknown_option () throw () + ~unknown_option () noexcept { } @@ -38,7 +38,7 @@ namespace butl } const char* unknown_option:: - what () const throw () + what () const noexcept { return "unknown option"; } @@ -46,7 +46,7 @@ namespace butl // unknown_argument // unknown_argument:: - ~unknown_argument () throw () + ~unknown_argument () noexcept { } @@ -57,7 +57,7 @@ namespace butl } const char* unknown_argument:: - what () const throw () + what () const noexcept { return "unknown argument"; } @@ -65,7 +65,7 @@ namespace butl // missing_value // missing_value:: - ~missing_value () throw () + ~missing_value () noexcept { } @@ -76,7 +76,7 @@ namespace butl } const char* missing_value:: - what () const throw () + what () const noexcept { return "missing option value"; } @@ -84,7 +84,7 @@ namespace butl // invalid_value // invalid_value:: - ~invalid_value () throw () + ~invalid_value () noexcept { } @@ -99,7 +99,7 @@ namespace butl } const char* invalid_value:: - what () const throw () + what () const noexcept { return "invalid option value"; } @@ -113,7 +113,7 @@ namespace butl } const char* eos_reached:: - what () const throw () + what () const noexcept { return "end of argument stream reached"; } @@ -387,6 +387,56 @@ namespace butl } }; + template <typename K, typename V, typename C> + struct parser<std::multimap<K, V, C> > + { + static void + parse (std::multimap<K, V, C>& m, bool& xs, scanner& s) + { + const char* o (s.next ()); + + if (s.more ()) + { + std::size_t pos (s.position ()); + std::string ov (s.next ()); + std::string::size_type p = ov.find ('='); + + K k = K (); + V v = V (); + std::string kstr (ov, 0, p); + std::string vstr (ov, (p != std::string::npos ? p + 1 : ov.size ())); + + int ac (2); + char* av[] = + { + const_cast<char*> (o), + 0 + }; + + bool dummy; + if (!kstr.empty ()) + { + av[1] = const_cast<char*> (kstr.c_str ()); + argv_scanner s (0, ac, av, false, pos); + parser<K>::parse (k, dummy, s); + } + + if (!vstr.empty ()) + { + av[1] = const_cast<char*> (vstr.c_str ()); + argv_scanner s (0, ac, av, false, pos); + parser<V>::parse (v, dummy, s); + } + + m.insert (typename std::multimap<K, V, C>::value_type (k, v)); + } + else + throw missing_value (o); + + xs = true; + } + }; + template <typename X, typename T, T X::*M> void thunk (X& x, scanner& s) @@ -1221,6 +1271,269 @@ namespace butl return r; } + // find_options + // + + find_options:: + find_options () + { + } + + bool find_options:: + parse (int& argc, + char** argv, + bool erase, + ::butl::cli::unknown_mode opt, + ::butl::cli::unknown_mode arg) + { + ::butl::cli::argv_scanner s (argc, argv, erase); + bool r = _parse (s, opt, arg); + return r; + } + + bool find_options:: + parse (int start, + int& argc, + char** argv, + bool erase, + ::butl::cli::unknown_mode opt, + ::butl::cli::unknown_mode arg) + { + ::butl::cli::argv_scanner s (start, argc, argv, erase); + bool r = _parse (s, opt, arg); + return r; + } + + bool find_options:: + parse (int& argc, + char** argv, + int& end, + bool erase, + ::butl::cli::unknown_mode opt, + ::butl::cli::unknown_mode arg) + { + ::butl::cli::argv_scanner s (argc, argv, erase); + bool r = _parse (s, opt, arg); + end = s.end (); + return r; + } + + bool find_options:: + parse (int start, + int& argc, + char** argv, + int& end, + bool erase, + ::butl::cli::unknown_mode opt, + ::butl::cli::unknown_mode arg) + { + ::butl::cli::argv_scanner s (start, argc, argv, erase); + bool r = _parse (s, opt, arg); + end = s.end (); + return r; + } + + bool find_options:: + parse (::butl::cli::scanner& s, + ::butl::cli::unknown_mode opt, + ::butl::cli::unknown_mode arg) + { + bool r = _parse (s, opt, arg); + return r; + } + + typedef + std::map<std::string, void (*) (find_options&, ::butl::cli::scanner&)> + _cli_find_options_map; + + static _cli_find_options_map _cli_find_options_map_; + + struct _cli_find_options_map_init + { + _cli_find_options_map_init () + { + } + }; + + static _cli_find_options_map_init _cli_find_options_map_init_; + + bool find_options:: + _parse (const char* o, ::butl::cli::scanner& s) + { + _cli_find_options_map::const_iterator i (_cli_find_options_map_.find (o)); + + if (i != _cli_find_options_map_.end ()) + { + (*(i->second)) (*this, s); + return true; + } + + return false; + } + + bool find_options:: + _parse (::butl::cli::scanner& s, + ::butl::cli::unknown_mode opt_mode, + ::butl::cli::unknown_mode arg_mode) + { + // Can't skip combined flags (--no-combined-flags). + // + assert (opt_mode != ::butl::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; + } + + 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) + }; + + ::butl::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 ::butl::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 + }; + + ::butl::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 ::butl::cli::unknown_mode::skip: + { + s.skip (); + r = true; + continue; + } + case ::butl::cli::unknown_mode::stop: + { + break; + } + case ::butl::cli::unknown_mode::fail: + { + throw ::butl::cli::unknown_option (o); + } + } + + break; + } + } + + switch (arg_mode) + { + case ::butl::cli::unknown_mode::skip: + { + s.skip (); + r = true; + continue; + } + case ::butl::cli::unknown_mode::stop: + { + break; + } + case ::butl::cli::unknown_mode::fail: + { + throw ::butl::cli::unknown_argument (o); + } + } + + break; + } + + return r; + } + // ln_options // |