enum ввод из xml в c ++ программу с использованием boost :: property_tree

Прочитайте property_tree/xml_parser.hpp заголовочный файл Это довольно просто.

Вот самые важные части, все в boost::property_tree::xml_parser Пространство имен:

/**
* Reads XML from an input stream and translates it to property tree.
* @note Clears existing contents of property tree.  In case of error the
*       property tree unmodified.
* @note XML attributes are placed under keys named @c \<xmlattr\>.
* @throw xml_parser_error In case of error deserializing the property tree.
* @param stream Stream from which to read in the property tree.
* @param[out] pt The property tree to populate.
* @param flags Flags controlling the behaviour of the parser.
*              The following flags are supported:
* @li @c no_concat_text -- Prevents concatenation of text nodes into
*                          datastring of property tree.  Puts them in
*                          separate @c \<xmltext\> strings instead.
* @li @c no_comments -- Skip XML comments.
* @li @c trim_whitespace -- Trim leading and trailing whitespace from text,
*                           and collapse sequences of whitespace.
*/
template<class Ptree>
void read_xml(std::basic_istream<
typename Ptree::key_type::value_type
> &stream,
Ptree &pt,
int flags = 0)
{
read_xml_internal(stream, pt, flags, std::string());
}

/**
* Reads XML from a file using the given locale and translates it to
* property tree.
* @note Clears existing contents of property tree.  In case of error the
*       property tree unmodified.
* @note XML attributes are placed under keys named @c \<xmlattr\>.
* @throw xml_parser_error In case of error deserializing the property tree.
* @param filename The file from which to read in the property tree.
* @param[out] pt The property tree to populate.
* @param flags Flags controlling the bahviour of the parser.
*              The following flags are supported:
* @li @c no_concat_text -- Prevents concatenation of text nodes into
*                          datastring of property tree.  Puts them in
*                          separate @c \<xmltext\> strings instead.
* @li @c no_comments -- Skip XML comments.
* @param loc The locale to use when reading in the file contents.
*/
template<class Ptree>
void read_xml(const std::string &filename,
Ptree &pt,
int flags = 0,
const std::locale &loc = std::locale())
{
BOOST_ASSERT(validate_flags(flags));
std::basic_ifstream<typename Ptree::key_type::value_type>
stream(filename.c_str());
if (!stream)
BOOST_PROPERTY_TREE_THROW(xml_parser_error(
"cannot open file", filename, 0));
stream.imbue(loc);
read_xml_internal(stream, pt, flags, filename);
}