294 lines
11 KiB
C++
294 lines
11 KiB
C++
|
// Copyright Vladimir Prus 2002-2004.
|
||
|
|
// Distributed under the Boost Software License, Version 1.0.
|
||
|
|
// (See accompanying file LICENSE_1_0.txt
|
||
|
|
// or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef BOOST_PARSERS_VP_2003_05_19
|
||
|
|
#define BOOST_PARSERS_VP_2003_05_19
|
||
|
|
|
||
|
|
#include <boost/program_options/config.hpp>
|
||
|
|
#include <boost/program_options/option.hpp>
|
||
|
|
#include <boost/program_options/detail/cmdline.hpp>
|
||
|
|
|
||
|
|
#include <boost/function/function1.hpp>
|
||
|
|
|
||
|
|
#include <iosfwd>
|
||
|
|
#include <vector>
|
||
|
|
#include <utility>
|
||
|
|
|
||
|
|
#if defined(BOOST_MSVC)
|
||
|
|
# pragma warning (push)
|
||
|
|
# pragma warning (disable:4251) // class 'std::vector<_Ty>' needs to have dll-interface to be used by clients of class 'boost::program_options::basic_parsed_options<wchar_t>'
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace boost { namespace program_options {
|
||
|
|
|
||
|
|
class options_description;
|
||
|
|
class positional_options_description;
|
||
|
|
|
||
|
|
|
||
|
|
/** Results of parsing an input source.
|
||
|
|
The primary use of this class is passing information from parsers
|
||
|
|
component to value storage component. This class does not makes
|
||
|
|
much sense itself.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
class basic_parsed_options {
|
||
|
|
public:
|
||
|
|
explicit basic_parsed_options(const options_description* xdescription, int options_prefix = 0)
|
||
|
|
: description(xdescription), m_options_prefix(options_prefix) {}
|
||
|
|
/** Options found in the source. */
|
||
|
|
std::vector< basic_option<charT> > options;
|
||
|
|
/** Options description that was used for parsing.
|
||
|
|
Parsers should return pointer to the instance of
|
||
|
|
option_description passed to them, and issues of lifetime are
|
||
|
|
up to the caller. Can be NULL.
|
||
|
|
*/
|
||
|
|
const options_description* description;
|
||
|
|
|
||
|
|
/** Mainly used for the diagnostic messages in exceptions.
|
||
|
|
* The canonical option prefix for the parser which generated these results,
|
||
|
|
* depending on the settings for basic_command_line_parser::style() or
|
||
|
|
* cmdline::style(). In order of precedence of command_line_style enums:
|
||
|
|
* allow_long
|
||
|
|
* allow_long_disguise
|
||
|
|
* allow_dash_for_short
|
||
|
|
* allow_slash_for_short
|
||
|
|
*/
|
||
|
|
int m_options_prefix;
|
||
|
|
};
|
||
|
|
|
||
|
|
/** Specialization of basic_parsed_options which:
|
||
|
|
- provides convenient conversion from basic_parsed_options<char>
|
||
|
|
- stores the passed char-based options for later use.
|
||
|
|
*/
|
||
|
|
template<>
|
||
|
|
class BOOST_PROGRAM_OPTIONS_DECL basic_parsed_options<wchar_t> {
|
||
|
|
public:
|
||
|
|
/** Constructs wrapped options from options in UTF8 encoding. */
|
||
|
|
explicit basic_parsed_options(const basic_parsed_options<char>& po);
|
||
|
|
|
||
|
|
std::vector< basic_option<wchar_t> > options;
|
||
|
|
const options_description* description;
|
||
|
|
|
||
|
|
/** Stores UTF8 encoded options that were passed to constructor,
|
||
|
|
to avoid reverse conversion in some cases. */
|
||
|
|
basic_parsed_options<char> utf8_encoded_options;
|
||
|
|
|
||
|
|
/** Mainly used for the diagnostic messages in exceptions.
|
||
|
|
* The canonical option prefix for the parser which generated these results,
|
||
|
|
* depending on the settings for basic_command_line_parser::style() or
|
||
|
|
* cmdline::style(). In order of precedence of command_line_style enums:
|
||
|
|
* allow_long
|
||
|
|
* allow_long_disguise
|
||
|
|
* allow_dash_for_short
|
||
|
|
* allow_slash_for_short
|
||
|
|
*/
|
||
|
|
int m_options_prefix;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef basic_parsed_options<char> parsed_options;
|
||
|
|
typedef basic_parsed_options<wchar_t> wparsed_options;
|
||
|
|
|
||
|
|
/** Augments basic_parsed_options<wchar_t> with conversion from
|
||
|
|
'parsed_options' */
|
||
|
|
|
||
|
|
|
||
|
|
typedef function1<std::pair<std::string, std::string>, const std::string&> ext_parser;
|
||
|
|
|
||
|
|
/** Command line parser.
|
||
|
|
|
||
|
|
The class allows one to specify all the information needed for parsing
|
||
|
|
and to parse the command line. It is primarily needed to
|
||
|
|
emulate named function parameters \-- a regular function with 5
|
||
|
|
parameters will be hard to use and creating overloads with a smaller
|
||
|
|
number of parameters will be confusing.
|
||
|
|
|
||
|
|
For the most common case, the function parse_command_line is a better
|
||
|
|
alternative.
|
||
|
|
|
||
|
|
There are two typedefs \-- command_line_parser and wcommand_line_parser,
|
||
|
|
for charT == char and charT == wchar_t cases.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
class basic_command_line_parser : private detail::cmdline {
|
||
|
|
public:
|
||
|
|
/** Creates a command line parser for the specified arguments
|
||
|
|
list. The 'args' parameter should not include program name.
|
||
|
|
*/
|
||
|
|
basic_command_line_parser(const std::vector<
|
||
|
|
std::basic_string<charT> >& args);
|
||
|
|
/** Creates a command line parser for the specified arguments
|
||
|
|
list. The parameters should be the same as passed to 'main'.
|
||
|
|
*/
|
||
|
|
basic_command_line_parser(int argc, const charT* const argv[]);
|
||
|
|
|
||
|
|
/** Sets options descriptions to use. */
|
||
|
|
basic_command_line_parser& options(const options_description& desc);
|
||
|
|
/** Sets positional options description to use. */
|
||
|
|
basic_command_line_parser& positional(
|
||
|
|
const positional_options_description& desc);
|
||
|
|
|
||
|
|
/** Sets the command line style. */
|
||
|
|
basic_command_line_parser& style(int);
|
||
|
|
/** Sets the extra parsers. */
|
||
|
|
basic_command_line_parser& extra_parser(ext_parser);
|
||
|
|
|
||
|
|
/** Parses the options and returns the result of parsing.
|
||
|
|
Throws on error.
|
||
|
|
*/
|
||
|
|
basic_parsed_options<charT> run();
|
||
|
|
|
||
|
|
/** Specifies that unregistered options are allowed and should
|
||
|
|
be passed though. For each command like token that looks
|
||
|
|
like an option but does not contain a recognized name, an
|
||
|
|
instance of basic_option<charT> will be added to result,
|
||
|
|
with 'unrecognized' field set to 'true'. It's possible to
|
||
|
|
collect all unrecognized options with the 'collect_unrecognized'
|
||
|
|
funciton.
|
||
|
|
*/
|
||
|
|
basic_command_line_parser& allow_unregistered();
|
||
|
|
|
||
|
|
using detail::cmdline::style_parser;
|
||
|
|
|
||
|
|
basic_command_line_parser& extra_style_parser(style_parser s);
|
||
|
|
|
||
|
|
private:
|
||
|
|
const options_description* m_desc;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef basic_command_line_parser<char> command_line_parser;
|
||
|
|
typedef basic_command_line_parser<wchar_t> wcommand_line_parser;
|
||
|
|
|
||
|
|
/** Creates instance of 'command_line_parser', passes parameters to it,
|
||
|
|
and returns the result of calling the 'run' method.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
basic_parsed_options<charT>
|
||
|
|
parse_command_line(int argc, const charT* const argv[],
|
||
|
|
const options_description&,
|
||
|
|
int style = 0,
|
||
|
|
function1<std::pair<std::string, std::string>,
|
||
|
|
const std::string&> ext
|
||
|
|
= ext_parser());
|
||
|
|
|
||
|
|
/** Parse a config file.
|
||
|
|
|
||
|
|
Read from given stream.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
#if ! BOOST_WORKAROUND(__ICL, BOOST_TESTED_AT(700))
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL
|
||
|
|
#endif
|
||
|
|
basic_parsed_options<charT>
|
||
|
|
parse_config_file(std::basic_istream<charT>&, const options_description&,
|
||
|
|
bool allow_unregistered = false);
|
||
|
|
|
||
|
|
/** Parse a config file.
|
||
|
|
|
||
|
|
Read from file with the given name. The character type is
|
||
|
|
passed to the file stream.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
#if ! BOOST_WORKAROUND(__ICL, BOOST_TESTED_AT(700))
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL
|
||
|
|
#endif
|
||
|
|
basic_parsed_options<charT>
|
||
|
|
parse_config_file(const char* filename, const options_description&,
|
||
|
|
bool allow_unregistered = false);
|
||
|
|
|
||
|
|
/** Controls if the 'collect_unregistered' function should
|
||
|
|
include positional options, or not. */
|
||
|
|
enum collect_unrecognized_mode
|
||
|
|
{ include_positional, exclude_positional };
|
||
|
|
|
||
|
|
/** Collects the original tokens for all named options with
|
||
|
|
'unregistered' flag set. If 'mode' is 'include_positional'
|
||
|
|
also collects all positional options.
|
||
|
|
Returns the vector of origianl tokens for all collected
|
||
|
|
options.
|
||
|
|
*/
|
||
|
|
template<class charT>
|
||
|
|
std::vector< std::basic_string<charT> >
|
||
|
|
collect_unrecognized(const std::vector< basic_option<charT> >& options,
|
||
|
|
enum collect_unrecognized_mode mode);
|
||
|
|
|
||
|
|
/** Parse environment.
|
||
|
|
|
||
|
|
For each environment variable, the 'name_mapper' function is called to
|
||
|
|
obtain the option name. If it returns empty string, the variable is
|
||
|
|
ignored.
|
||
|
|
|
||
|
|
This is done since naming of environment variables is typically
|
||
|
|
different from the naming of command line options.
|
||
|
|
*/
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL parsed_options
|
||
|
|
parse_environment(const options_description&,
|
||
|
|
const function1<std::string, std::string>& name_mapper);
|
||
|
|
|
||
|
|
/** Parse environment.
|
||
|
|
|
||
|
|
Takes all environment variables which start with 'prefix'. The option
|
||
|
|
name is obtained from variable name by removing the prefix and
|
||
|
|
converting the remaining string into lower case.
|
||
|
|
*/
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL parsed_options
|
||
|
|
parse_environment(const options_description&, const std::string& prefix);
|
||
|
|
|
||
|
|
/** @overload
|
||
|
|
This function exists to resolve ambiguity between the two above
|
||
|
|
functions when second argument is of 'char*' type. There's implicit
|
||
|
|
conversion to both function1 and string.
|
||
|
|
*/
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL parsed_options
|
||
|
|
parse_environment(const options_description&, const char* prefix);
|
||
|
|
|
||
|
|
/** Splits a given string to a collection of single strings which
|
||
|
|
can be passed to command_line_parser. The second parameter is
|
||
|
|
used to specify a collection of possible seperator chars used
|
||
|
|
for splitting. The seperator is defaulted to space " ".
|
||
|
|
Splitting is done in a unix style way, with respect to quotes '"'
|
||
|
|
and escape characters '\'
|
||
|
|
*/
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL std::vector<std::string>
|
||
|
|
split_unix(const std::string& cmdline, const std::string& seperator = " \t",
|
||
|
|
const std::string& quote = "'\"", const std::string& escape = "\\");
|
||
|
|
|
||
|
|
#ifndef BOOST_NO_STD_WSTRING
|
||
|
|
/** @overload */
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL std::vector<std::wstring>
|
||
|
|
split_unix(const std::wstring& cmdline, const std::wstring& seperator = L" \t",
|
||
|
|
const std::wstring& quote = L"'\"", const std::wstring& escape = L"\\");
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef _WIN32
|
||
|
|
/** Parses the char* string which is passed to WinMain function on
|
||
|
|
windows. This function is provided for convenience, and because it's
|
||
|
|
not clear how to portably access split command line string from
|
||
|
|
runtime library and if it always exists.
|
||
|
|
This function is available only on Windows.
|
||
|
|
*/
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL std::vector<std::string>
|
||
|
|
split_winmain(const std::string& cmdline);
|
||
|
|
|
||
|
|
#ifndef BOOST_NO_STD_WSTRING
|
||
|
|
/** @overload */
|
||
|
|
BOOST_PROGRAM_OPTIONS_DECL std::vector<std::wstring>
|
||
|
|
split_winmain(const std::wstring& cmdline);
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
}}
|
||
|
|
|
||
|
|
#if defined(BOOST_MSVC)
|
||
|
|
# pragma warning (pop)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#undef DECL
|
||
|
|
|
||
|
|
#include "boost/program_options/detail/parsers.hpp"
|
||
|
|
|
||
|
|
#endif
|