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74 lines
2.7 KiB
74 lines
2.7 KiB
// Copyright Vladimir Prus 2004. |
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// Distributed under the Boost Software License, Version 1.0. |
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// (See accompanying file LICENSE_1_0.txt |
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// or copy at http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_PROGRAM_OPTIONS_POSITIONAL_OPTIONS_VP_2004_03_02 |
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#define BOOST_PROGRAM_OPTIONS_POSITIONAL_OPTIONS_VP_2004_03_02 |
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#include <boost/program_options/config.hpp> |
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#include <vector> |
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#include <string> |
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#if defined(BOOST_MSVC) |
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# pragma warning (push) |
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# pragma warning (disable:4251) // class 'std::vector<_Ty>' needs to have dll-interface to be used by clients of class 'boost::program_options::positional_options_description' |
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#endif |
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namespace boost { namespace program_options { |
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/** Describes positional options. |
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The class allows to guess option names for positional options, which |
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are specified on the command line and are identified by the position. |
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The class uses the information provided by the user to associate a name |
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with every positional option, or tell that no name is known. |
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The primary assumption is that only the relative order of the |
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positional options themselves matters, and that any interleaving |
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ordinary options don't affect interpretation of positional options. |
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The user initializes the class by specifying that first N positional |
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options should be given the name X1, following M options should be given |
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the name X2 and so on. |
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*/ |
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class BOOST_PROGRAM_OPTIONS_DECL positional_options_description { |
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public: |
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positional_options_description(); |
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/** Species that up to 'max_count' next positional options |
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should be given the 'name'. The value of '-1' means 'unlimited'. |
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No calls to 'add' can be made after call with 'max_value' equal to |
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'-1'. |
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*/ |
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positional_options_description& |
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add(const char* name, int max_count); |
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/** Returns the maximum number of positional options that can |
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be present. Can return (numeric_limits<unsigned>::max)() to |
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indicate unlimited number. */ |
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unsigned max_total_count() const; |
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/** Returns the name that should be associated with positional |
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options at 'position'. |
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Precondition: position < max_total_count() |
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*/ |
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const std::string& name_for_position(unsigned position) const; |
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private: |
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// List of names corresponding to the positions. If the number of |
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// positions is unlimited, then the last name is stored in |
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// m_trailing; |
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std::vector<std::string> m_names; |
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std::string m_trailing; |
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}; |
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}} |
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#if defined(BOOST_MSVC) |
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# pragma warning (pop) |
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#endif |
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#endif |
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