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90 lines
3.6 KiB
90 lines
3.6 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_CMDLINE_HPP_VP_2004_03_13 |
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#define BOOST_CMDLINE_HPP_VP_2004_03_13 |
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namespace boost { namespace program_options { namespace command_line_style { |
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/** Various possible styles of options. |
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There are "long" options, which start with "--" and "short", |
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which start with either "-" or "/". Both kinds can be allowed or |
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disallowed, see allow_long and allow_short. The allowed character |
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for short options is also configurable. |
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Option's value can be specified in the same token as name |
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("--foo=bar"), or in the next token. |
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It's possible to introduce long options by the same character as |
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short options, see allow_long_disguise. |
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Finally, guessing (specifying only prefix of option) and case |
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insensitive processing are supported. |
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*/ |
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enum style_t { |
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/// Allow "--long_name" style |
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allow_long = 1, |
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/// Allow "-<single character" style |
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allow_short = allow_long << 1, |
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/// Allow "-" in short options |
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allow_dash_for_short = allow_short << 1, |
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/// Allow "/" in short options |
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allow_slash_for_short = allow_dash_for_short << 1, |
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/** Allow option parameter in the same token |
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for long option, like in |
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@verbatim |
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--foo=10 |
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@endverbatim |
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*/ |
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long_allow_adjacent = allow_slash_for_short << 1, |
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/** Allow option parameter in the next token for |
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long options. */ |
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long_allow_next = long_allow_adjacent << 1, |
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/** Allow option parameter in the same token for |
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short options. */ |
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short_allow_adjacent = long_allow_next << 1, |
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/** Allow option parameter in the next token for |
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short options. */ |
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short_allow_next = short_allow_adjacent << 1, |
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/** Allow to merge several short options together, |
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so that "-s -k" become "-sk". All of the options |
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but last should accept no parameter. For example, if |
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"-s" accept a parameter, then "k" will be taken as |
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parameter, not another short option. |
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Dos-style short options cannot be sticky. |
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*/ |
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allow_sticky = short_allow_next << 1, |
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/** Allow abbreviated spellings for long options, |
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if they unambiguously identify long option. |
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No long option name should be prefix of other |
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long option name if guessing is in effect. |
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*/ |
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allow_guessing = allow_sticky << 1, |
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/** Ignore the difference in case for long options. |
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*/ |
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long_case_insensitive = allow_guessing << 1, |
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/** Ignore the difference in case for short options. |
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*/ |
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short_case_insensitive = long_case_insensitive << 1, |
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/** Ignore the difference in case for all options. |
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*/ |
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case_insensitive = (long_case_insensitive | short_case_insensitive), |
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/** Allow long options with single option starting character, |
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e.g <tt>-foo=10</tt> |
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*/ |
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allow_long_disguise = short_case_insensitive << 1, |
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/** The more-or-less traditional unix style. */ |
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unix_style = (allow_short | short_allow_adjacent | short_allow_next |
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| allow_long | long_allow_adjacent | long_allow_next |
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| allow_sticky | allow_guessing |
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| allow_dash_for_short), |
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/** The default style. */ |
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default_style = unix_style |
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}; |
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}}} |
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#endif |
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