/usr/include/zeep/xml/serialize.hpp is in libzeep-dev 3.0.2-5ubuntu1.
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// 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 SOAP_XML_SERIALIZE_H
#define SOAP_XML_SERIALIZE_H
#include <sstream>
#include <vector>
#include <list>
#include <map>
#include <cassert>
#include <ctime>
#include <zeep/xml/node.hpp>
#include <zeep/exception.hpp>
#include <boost/config.hpp>
#include <boost/foreach.hpp>
#include <boost/mpl/if.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/type_traits/is_arithmetic.hpp>
#include <boost/type_traits/is_enum.hpp>
#include <boost/type_traits/remove_pointer.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/type_traits/remove_const.hpp>
#include <boost/type_traits/integral_promotion.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/optional.hpp>
#include <boost/regex.hpp>
// Lots of template wizardry here...
//
// The goal is to make a completely transparent XML serializer/deserializer
// in order to translate SOAP messages into/out of native C++ types.
//
// The interface for the code below is compatible with the 'serialize' member
// function required to use boost::serialization.
/// \def SOAP_XML_ADD_ENUM(e,v)
/// \brief A macro to add the name of an enum value to the serializer
///
/// To be able to correctly use enum values in a schema file or when serializing,
/// you have to specify the enum values.
///
/// E.g., if you have a struct name Algorithm with values 'vector', 'dice' and 'jaccard'
/// you would write:
///
///> enum Algorithm { vector, dice, jaccard };
///> SOAP_XML_ADD_ENUM(Algorithm, vector);
///> SOAP_XML_ADD_ENUM(Algorithm, dice);
///> SOAP_XML_ADD_ENUM(Algorithm, jaccard);
///
/// An alternative (better?) way to do this is:
///
///> zeep::xml::enum_map<Algorithm>::instance("Algorithm").add_enum()
///> ("vector", vector)
///> ("dice", dice)
///> ("jaccard", jaccard);
/// \def SOAP_XML_SET_STRUCT_NAME(s)
/// \brief A macro to assign a name to a struct used in serialization.
///
/// By default, libzeep uses the typeid(s).name() as the name for an element.
/// That's often not what is intented. Calling this macro will make sure
/// the type name you used in your code will be used instead.
///
/// E.g., struct FindResult { ... } might end up with a mangled name in the
/// schema. To use FindResult instead, call SOAP_XML_SET_STRUCT_NAME(FindResult);
///
/// An alternative is to call, which allows different schema and struct names:
/// zeep::xml::struct_serializer<FindResult>::set_struct_name("FindResult");
namespace zeep { namespace xml {
#ifndef LIBZEEP_DOXYGEN_INVOKED
const std::string kPrefix = "ns";
#endif
/// Older versions of libzeep used to use boost::serialization::nvp as type to
/// specify name/value pairs. This will continue to work, but to use attributes
/// we come up with a special version of name/value pairs specific for libzeep.
struct serializer;
struct deserializer;
template<typename T>
struct element_nvp : public boost::serialization::nvp<T>
{
explicit element_nvp(const char* name, T& v) : boost::serialization::nvp<T>(name, v) {}
element_nvp(const element_nvp& rhs) : boost::serialization::nvp<T>(rhs) {}
};
template<typename T>
struct attribute_nvp : public boost::serialization::nvp<T>
{
explicit attribute_nvp(const char* name, T& v) : boost::serialization::nvp<T>(name, v) {}
attribute_nvp(const attribute_nvp& rhs) : boost::serialization::nvp<T>(rhs) {}
};
template<typename T>
inline element_nvp<T> make_element_nvp(const char* name, T& v)
{
return element_nvp<T>(name, v);
}
template<typename T>
inline attribute_nvp<T> make_attribute_nvp(const char* name, T& v)
{
return attribute_nvp<T>(name, v);
}
#define ZEEP_ELEMENT_NAME_VALUE(name) \
zeep::xml::make_element_nvp(BOOST_PP_STRINGIZE(name), name)
#define ZEEP_ATTRIBUTE_NAME_VALUE(name) \
zeep::xml::make_attribute_nvp(BOOST_PP_STRINGIZE(name), name)
/// serializer, deserializer and schema_creator are classes that can be used
/// to initiate the serialization. They are the Archive classes that are
/// the first parameter to the templated function 'serialize' in the classes
/// that can be serialized. (See boost::serialization for more info).
/// serializer is the class that initiates the serialization process.
struct serializer
{
serializer(container* node) : m_node(node) {}
template<typename T>
serializer& operator&(const boost::serialization::nvp<T>& rhs)
{
return serialize_element(rhs.name(), rhs.value());
}
template<typename T>
serializer& operator&(const element_nvp<T>& rhs)
{
return serialize_element(rhs.name(), rhs.value());
}
template<typename T>
serializer& operator&(const attribute_nvp<T>& rhs)
{
return serialize_attribute(rhs.name(), rhs.value());
}
template<typename T>
serializer& serialize_element(const char* name, const T& data);
template<typename T>
serializer& serialize_attribute(const char* name, const T& data);
container* m_node;
};
/// deserializer is the class that initiates the deserialization process.
struct deserializer
{
deserializer(const container* node) : m_node(node) {}
template<typename T>
deserializer& operator&(const boost::serialization::nvp<T>& rhs)
{
return deserialize_element(rhs.name(), rhs.value());
}
template<typename T>
deserializer& operator&(const element_nvp<T>& rhs)
{
return deserialize_element(rhs.name(), rhs.value());
}
template<typename T>
deserializer& operator&(const attribute_nvp<T>& rhs)
{
return deserialize_attribute(rhs.name(), rhs.value());
}
template<typename T>
deserializer& deserialize_element(const char* name, T& data);
template<typename T>
deserializer& deserialize_attribute(const char* name, T& data);
const container* m_node;
};
#ifndef LIBZEEP_DOXYGEN_INVOKED
typedef std::map<std::string,element*> type_map;
#endif
/// schema_creator is used by zeep::dispatcher to create schema files.
struct schema_creator
{
schema_creator(type_map& types, element* node)
: m_node(node), m_types(types) {}
template<typename T>
schema_creator& operator&(const boost::serialization::nvp<T>& rhs)
{
return add_element(rhs.name(), rhs.value());
}
template<typename T>
schema_creator& operator&(const element_nvp<T>& rhs)
{
return add_element(rhs.name(), rhs.value());
}
template<typename T>
schema_creator& operator&(const attribute_nvp<T>& rhs)
{
return add_attribute(rhs.name(), rhs.value());
}
template<typename T>
schema_creator& add_element(const char* name, const T& value);
template<typename T>
schema_creator& add_attribute(const char* name, const T& value);
element* m_node;
type_map& m_types;
};
#ifndef LIBZEEP_DOXYGEN_INVOKED
// The actual (de)serializers
//
// We have two kinds of serializers, basic type serializers can read and write
// their values from/to strings. They also have a type_name that is used in
// schema's, this should be the XSD standard name. These basic serializers are
// used to write either XML element content or attribute values.
//
// The basic serializers should typedef a type value_type and also implement
// the following functions:
//
// static std::string serialize_value(const value_type& value);
// static value_type deserialize_value(const std::string& value);
// static const char* type_name();
//
// The basic serializers are accessed through another templated class,
// serializer_type.
//
// All versions of serializer_type<> should implement the following
// functions:
//
// static void serialize(element* n, const T& v);
// static void serialize_child(container* n, const char* name, const T& v);
// static void deserialize(const element* n, T& v);
// static void deserialize_child(const container* n, const char* name, T& v);
// static element* schema(const std::string& name);
// static void register_type(type_map& types);
//
// Examples of specializations of serializer_type are serialize_container_type
// and serialize_boost_optional.
// arithmetic types are ints, doubles, etc... simply use lexical_cast to convert these
template<typename T, int S = sizeof(T), bool = boost::is_unsigned<T>::value> struct arithmetic_schema_name {};
template<typename T> struct arithmetic_schema_name<T, 1, false> {
static const char* type_name() { return "xsd:byte"; }
};
template<typename T> struct arithmetic_schema_name<T, 1, true> {
static const char* type_name() { return "xsd:unsignedByte"; }
};
template<typename T> struct arithmetic_schema_name<T, 2, false> {
static const char* type_name() { return "xsd:short"; }
};
template<typename T> struct arithmetic_schema_name<T, 2, true> {
static const char* type_name() { return "xsd:unsignedShort"; }
};
template<typename T> struct arithmetic_schema_name<T, 4, false> {
static const char* type_name() { return "xsd:int"; }
};
template<typename T> struct arithmetic_schema_name<T, 4, true> {
static const char* type_name() { return "xsd:unsignedInt"; }
};
template<typename T> struct arithmetic_schema_name<T, 8, false> {
static const char* type_name() { return "xsd:long"; }
};
template<typename T> struct arithmetic_schema_name<T, 8, true> {
static const char* type_name() { return "xsd:unsignedLong"; }
};
template<> struct arithmetic_schema_name<float> {
static const char* type_name() { return "xsd:float"; }
};
template<> struct arithmetic_schema_name<double> {
static const char* type_name() { return "xsd:double"; }
};
template<typename T>
struct arithmetic_serializer : public arithmetic_schema_name<T>
{
typedef T value_type;
// use promoted type to force writing out char as an integer
typedef typename boost::integral_promotion<T>::type promoted_type;
static std::string serialize_value(const value_type& value)
{
return boost::lexical_cast<std::string>(static_cast<promoted_type>(value));
}
static value_type deserialize_value(const std::string& value)
{
return value.empty() ? 0 : static_cast<value_type>(boost::lexical_cast<promoted_type>(value));
}
};
struct string_serializer
{
typedef std::string value_type;
static const char* type_name() { return "xsd:string"; }
static std::string serialize_value(const std::string& value)
{
return value;
}
static std::string deserialize_value(const std::string& value)
{
return value;
}
};
struct bool_serializer
{
typedef bool value_type;
static const char* type_name() { return "xsd:boolean"; }
static std::string serialize_value(bool value)
{
return value ? "true" : "false";
}
static bool deserialize_value(const std::string& value)
{
return (value == "true" or value == "1");
}
};
/// \brief serializer/deserializer for boost::posix_time::ptime
/// boost::posix_time::ptime values are always assumed to be UTC
struct boost_posix_time_ptime_serializer
{
typedef boost::posix_time::ptime value_type;
static const char* type_name() { return "xsd:dateTime"; }
/// Serialize the boost::posix_time::ptime as YYYY-MM-DDThh:mm:ssZ (zero UTC offset)
static std::string serialize_value(const boost::posix_time::ptime& v)
{
return boost::posix_time::to_iso_extended_string(v).append("Z");
}
/// Deserialize according to ISO8601 rules.
/// If Zulu time is specified, then the parsed xsd:dateTime is returned.
/// If an UTC offset is present, then the offset is subtracted from the xsd:dateTime, this yields UTC.
/// If no UTC offset is present, then the xsd:dateTime is assumed to be local time and converted to UTC.
static boost::posix_time::ptime deserialize_value(const std::string& s)
{
// We accept 3 general formats:
// 1: date fields separated with dashes, time fields separated with colons, eg. 2013-02-17T15:25:20,502104+01:00
// 2: date fields not separated, time fields separated with colons, eg. 20130217T15:25:20,502104+01:00
// 3: date fields not separated, time fields not separated, eg. 20130217T152520,502104+01:00
// Apart from the separators, the 3 regexes are basically the same, i.e. they have the same fields
// Note: boost::regex is threadsafe, so we can declare these statically
// Format 1:
// ^(-?\d{4})-(\d{2})-(\d{2})T(\d{2})(:(\d{2})(:(\d{2})([.,](\d+))?)?)?((Z)|([-+])(\d{2})(:(\d{2}))?)?$
// ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^^ ^ ^ ^ ^
// | | | | | | | | | | || | | | |
// | | | | | | | | | | || | | | [16] UTC minutes offset
// | | | | | | | | | | || | | [15] have UTC minutes offset?
// | | | | | | | | | | || | [14] UTC hour offset
// | | | | | | | | | | || [13] UTC offset sign
// | | | | | | | | | | |[12] Zulu time
// | | | | | | | | | | [11] have time zone?
// | | | | | | | | | [10] fractional seconds
// | | | | | | | | [9] have fractional seconds
// | | | | | | | [8] seconds
// | | | | | | [7] have seconds?
// | | | | | [6] minutes
// | | | | [5] have minutes?
// | | | [4] hours
// | | [3] day
// | [2] month
// [1] year
static boost::regex re1("^(-?\\d{4})-(\\d{2})-(\\d{2})T(\\d{2})(:(\\d{2})(:(\\d{2})([.,](\\d+))?)?)?((Z)|([-+])(\\d{2})(:(\\d{2}))?)?$");
// Format 2:
// ^(-?\d{4})(\d{2})(\d{2})T(\d{2})(:(\d{2})(:(\d{2})([.,]\d+)?)?)?((Z)|([-+])(\d{2})(:(\d{2}))?)?$
static boost::regex re2("^(-?\\d{4})(\\d{2})(\\d{2})T(\\d{2})(:(\\d{2})(:(\\d{2})([.,]\\d+)?)?)?((Z)|([-+])(\\d{2})(:(\\d{2}))?)?$");
// Format 3:
// ^(-?\d{4})(\d{2})(\d{2})T(\d{2})((\d{2})((\d{2})([.,]\d+)?)?)?((Z)|([-+])(\d{2})(:(\d{2}))?)?$
static boost::regex re3("^(-?\\d{4})(\\d{2})(\\d{2})T(\\d{2})((\\d{2})((\\d{2})([.,]\\d+)?)?)?((Z)|([-+])(\\d{2})(:(\\d{2}))?)?$");
static const int f_year = 1;
static const int f_month = 2;
static const int f_day = 3;
static const int f_hours = 4;
static const int f_have_minutes = 5;
static const int f_minutes = 6;
static const int f_have_seconds = 7;
static const int f_seconds = 8;
static const int f_have_frac = 9;
static const int f_frac = 10;
static const int f_have_tz = 11;
static const int f_zulu = 12;
static const int f_offs_sign = 13;
static const int f_offs_hours = 14;
static const int f_have_offs_minutes = 15;
static const int f_offs_minutes = 16;
boost::smatch m;
if (not boost::regex_match(s, m, re1)) {
if (not boost::regex_match(s, m, re2)) {
if (not boost::regex_match(s, m, re3)) {
throw exception("Bad dateTime format");
}
}
}
boost::gregorian::date d(
boost::lexical_cast<int>(m[f_year])
, boost::lexical_cast<int>(m[f_month])
, boost::lexical_cast<int>(m[f_day])
);
int hours = boost::lexical_cast<int>(m[f_hours]);
int minutes = 0, seconds = 0;
if (m.length(f_have_minutes)) {
minutes = boost::lexical_cast<int>(m[f_minutes]);
if (m.length(f_have_seconds)) {
seconds = boost::lexical_cast<int>(m[f_seconds]);
}
}
boost::posix_time::time_duration t(hours, minutes, seconds);
if (m.length(f_have_frac)) {
double frac = boost::lexical_cast<double>(std::string(".").append(std::string(m[f_frac])));
t += boost::posix_time::microseconds(static_cast<int64_t>((frac + .5) * 1e6));
}
boost::posix_time::ptime result = boost::posix_time::ptime(d, t);
if (m.length(f_have_tz)) {
if (not m.length(f_zulu)) {
std::string sign = m[f_offs_sign];
int hours = boost::lexical_cast<int>(m[f_offs_hours]);
int minutes = 0;
if (m.length(f_have_offs_minutes)) {
minutes = boost::lexical_cast<int>(m[f_offs_minutes]);
}
boost::posix_time::time_duration offs(hours, minutes, 0);
if (sign == "+") {
result -= offs;
} else {
result += offs;
}
}
} else {
// Boost has no clear way of instantiating the *current* timezone, so
// it's not possible to convert from local to UTC, using boost::local_time classes
// For now, settle on using mktime...
std::tm tm = boost::posix_time::to_tm(result);
tm.tm_isdst = -1;
std::time_t t = mktime(&tm);
result = boost::posix_time::from_time_t(t);
}
return result;
}
};
/// \brief serializer/deserializer for boost::gregorian::date
/// boost::gregorian::date values are assumed to be floating, i.e. we don't accept timezone info in dates
struct boost_gregorian_date_serializer
{
typedef boost::gregorian::date value_type;
static const char* type_name() { return "xsd:date"; }
/// Serialize the boost::gregorian::date as YYYY-MM-DD
static std::string serialize_value(container* parent, const std::string& name, const boost::gregorian::date& v)
{
return boost::gregorian::to_iso_extended_string(v);
}
/// Deserialize boost::gregorian::date according to ISO8601 rules, but without timezone.
static boost::gregorian::date deserialize_value(const std::string& s)
{
// We accept 2 general formats:
// 1: date fields separated with dashes, eg. 2013-02-17
// 2: date fields not separated, eg. 20130217
// Apart from the separators, the 2 regexes are basically the same, i.e. they have the same fields
// Note: boost::regex is threadsafe, so we can declare these statically
// Format 1:
// ^(-?\d{4})-(\d{2})-(\d{2})$
// ^ ^ ^
// | | |
// | | |
// | | [3] day
// | [2] month
// [1] year
static boost::regex re1("^(-?\\d{4})-(\\d{2})-(\\d{2})$");
// Format 2:
// ^(-?\d{4})(\d{2})(\d{2})$
static boost::regex re2("^(-?\\d{4})(\\d{2})(\\d{2})$");
static const int f_year = 1;
static const int f_month = 2;
static const int f_day = 3;
boost::smatch m;
if (not boost::regex_match(s, m, re1)) {
if (not boost::regex_match(s, m, re2)) {
throw exception("Bad date format");
}
}
return boost::gregorian::date(
boost::lexical_cast<int>(m[f_year])
, boost::lexical_cast<int>(m[f_month])
, boost::lexical_cast<int>(m[f_day])
);
}
};
/// \brief serializer/deserializer for boost::posix_time::time_duration
/// boost::posix_time::time_duration values are assumed to be floating, i.e. we don't accept timezone info in times
struct boost_posix_time_time_duration_serializer
{
typedef boost::posix_time::time_duration value_type;
static const char* type_name() { return "xsd:time"; }
/// Serialize the boost::posix_time::time_duration as hh:mm:ss,ffffff
static std::string serialize_value(const boost::posix_time::time_duration& v)
{
return boost::posix_time::to_simple_string(v);
}
/// Deserialize boost::posix_time::time_duration according to ISO8601 rules, but without timezone.
static boost::posix_time::time_duration deserialize_value(const std::string& s)
{
// We accept 2 general formats:
// 1: time fields separated with colons, eg. 15:25:20,502104
// 2: time fields not separated, eg. 152520,502104
// Apart from the separators, the 2 regexes are basically the same, i.e. they have the same fields
// Note: boost::regex is threadsafe, so we can declare these statically
// Format 1:
// ^(\d{2})(:(\d{2})(:(\d{2})([.,](\d+))?)?)?$
// ^ ^ ^ ^ ^ ^ ^
// | | | | | | |
// | | | | | | [7] fractional seconds
// | | | | | [6] have fractional seconds
// | | | | [5] seconds
// | | | [4] have seconds?
// | | [3] minutes
// | [2] have minutes?
// [1] hours
static boost::regex re1("^(\\d{2})(:(\\d{2})(:(\\d{2})([.,](\\d+))?)?)?$");
// Format 2:
// ^(\d{2})((\d{2})((\d{2})([.,](\d+))?)?)?$
static boost::regex re2("^(\\d{2})((\\d{2})((\\d{2})([.,](\\d+))?)?)?$");
static const int f_hours = 1;
static const int f_have_minutes = 2;
static const int f_minutes = 3;
static const int f_have_seconds = 4;
static const int f_seconds = 5;
static const int f_have_frac = 6;
static const int f_frac = 7;
boost::smatch m;
if (not boost::regex_match(s, m, re1)) {
if (not boost::regex_match(s, m, re2)) {
throw exception("Bad time format");
}
}
int hours = boost::lexical_cast<int>(m[f_hours]);
int minutes = 0, seconds = 0;
if (m.length(f_have_minutes)) {
minutes = boost::lexical_cast<int>(m[f_minutes]);
if (m.length(f_have_seconds)) {
seconds = boost::lexical_cast<int>(m[f_seconds]);
}
}
boost::posix_time::time_duration result = boost::posix_time::time_duration(hours, minutes, seconds);
if (m.length(f_have_frac)) {
double frac = boost::lexical_cast<double>(std::string(".").append(std::string(m[f_frac])));
result += boost::posix_time::microseconds(static_cast<int64_t>((frac + .5) * 1e6));
}
return result;
}
};
// code to serialize structs.
// struct_serializer_archive is a helper class to be used as Archive
template<typename Archive, typename T>
struct struct_serializer
{
static void serialize(Archive& stream, T& data)
{
data.serialize(stream, 0U);
}
};
template<typename Struct>
struct struct_serializer_impl
{
typedef Struct value_type;
static std::string s_struct_name;
static const char* type_name() { return s_struct_name.c_str(); }
static void serialize(container* n, const value_type& value)
{
typedef struct_serializer<serializer,value_type> archive;
serializer sr(n);
archive::serialize(sr, const_cast<value_type&>(value));
}
static void deserialize(const container* n, value_type& v)
{
typedef struct_serializer<deserializer,value_type> archive;
deserializer ds(n);
archive::serialize(ds, v);
}
static element* schema(const std::string& name)
{
element* result(new element("xsd:element"));
result->set_attribute("name", name);
result->set_attribute("type", kPrefix + ':' + s_struct_name);
result->set_attribute("minOccurs", "1");
result->set_attribute("maxOccurs", "1");
return result;
}
static void register_type(type_map& types)
{
element* n(new element("xsd:complexType"));
n->set_attribute("name", s_struct_name);
types[s_struct_name] = n;
element* sequence(new element("xsd:sequence"));
n->append(sequence);
typedef struct_serializer<schema_creator,value_type> archive;
schema_creator schema(types, sequence);
value_type v;
archive::serialize(schema, v);
}
static void set_struct_name(const std::string& name)
{
s_struct_name = name;
}
};
template<typename Struct>
std::string struct_serializer_impl<Struct>::s_struct_name = typeid(Struct).name();
#endif
#define SOAP_XML_SET_STRUCT_NAME(s) zeep::xml::struct_serializer_impl<s>::s_struct_name = BOOST_PP_STRINGIZE(s);
// code to serialize enums.
#ifndef LIBZEEP_DOXYGEN_INVOKED
template<typename T>
struct enum_map
{
typedef typename std::map<T,std::string> name_mapping_type;
name_mapping_type m_name_mapping;
std::string m_name;
static enum_map& instance(const char* name = NULL)
{
static enum_map s_instance;
if (name and s_instance.m_name.empty())
s_instance.m_name = name;
return s_instance;
}
class add_enum_helper
{
friend struct enum_map;
add_enum_helper(name_mapping_type& mapping)
: m_mapping(mapping) {}
name_mapping_type& m_mapping;
public:
add_enum_helper& operator()(const std::string& name, T value)
{
m_mapping[value] = name;
return *this;
}
};
add_enum_helper add_enum()
{
return add_enum_helper(m_name_mapping);
}
};
#endif
#define SOAP_XML_ADD_ENUM(e,v) zeep::xml::enum_map<e>::instance(BOOST_PP_STRINGIZE(e)).m_name_mapping[v] = BOOST_PP_STRINGIZE(v);
#ifndef LIBZEEP_DOXYGEN_INVOKED
template<typename T>
struct enum_serializer
{
typedef T value_type;
typedef enum_map<T> t_enum_map;
typedef std::map<T,std::string> t_map;
static const char* type_name()
{
static std::string s_type_name = t_enum_map::instance().m_name;
return s_type_name.c_str();
}
static std::string serialize_value(const T& value)
{
return t_enum_map::instance().m_name_mapping[value];
}
static void serialize(container* n, const value_type& value)
{
n->str(serialize_value(value));
}
static T deserialize_value(const std::string& value)
{
T result = T();
t_map& m = t_enum_map::instance().m_name_mapping;
for (typename t_map::iterator e = m.begin(); e != m.end(); ++e)
{
if (e->second == value)
{
result = e->first;
break;
}
}
return result;
}
static void deserialize(const container* n, value_type& value)
{
value = deserialize_value(n->str());
}
static element* schema(const std::string& name)
{
std::string my_type_name = type_name();
element* result(new element("xsd:element"));
result->set_attribute("name", name);
result->set_attribute("type", kPrefix + ':' + my_type_name);
result->set_attribute("minOccurs", "1");
result->set_attribute("maxOccurs", "1");
return result;
}
static void register_type(type_map& types)
{
element* n(new element("xsd:simpleType"));
n->set_attribute("name", type_name());
types[type_name()] = n;
element* restriction(new element("xsd:restriction"));
restriction->set_attribute("base", "xsd:string");
n->append(restriction);
t_map& m = t_enum_map::instance().m_name_mapping;
for (typename t_map::iterator e = m.begin(); e != m.end(); ++e)
{
element* en(new element("xsd:enumeration"));
en->set_attribute("value", e->second);
restriction->append(en);
}
}
};
// a wrapper type for basic type serializers
template<class Serializer>
struct wrapped_serializer : public Serializer
{
typedef typename Serializer::value_type value_type;
static void serialize(container* n, const value_type& value)
{
n->str(Serializer::serialize_value(value));
}
static void deserialize(const container* n, value_type& value)
{
value = Serializer::deserialize_value(n->str());
}
static element* schema(const std::string& name)
{
element* n(new element("xsd:element"));
n->set_attribute("name", name);
n->set_attribute("type", Serializer::type_name());
n->set_attribute("minOccurs", "1");
n->set_attribute("maxOccurs", "1");
return n;
}
static void register_type(type_map& types)
{
}
};
// a common base class for many serializer_type classes
template<typename Serializer>
struct basic_serializer_type : public Serializer
{
typedef typename Serializer::value_type value_type;
typedef Serializer type_serializer_type;
static void serialize_child(container* n, const char* name, const value_type& value)
{
element* e = new element(name);
basic_serializer_type::serialize(e, value);
n->append(e);
}
static void deserialize_child(const container* n, const char* name, value_type& value)
{
element* e = n->find_first(name);
if (e != nullptr)
basic_serializer_type::deserialize(e, value);
else
value = value_type();
}
};
// serializer_type, the final interface for doing the actual work, is
// a templated class with a default implementation that derives from
// basic_serializer_type and a couple of specializations.
template<typename T>
struct serializer_type : public basic_serializer_type<
typename boost::mpl::if_c<
boost::is_arithmetic<T>::value,
wrapped_serializer<arithmetic_serializer<T> >,
typename boost::mpl::if_c<
boost::is_enum<T>::value,
enum_serializer<T>,
struct_serializer_impl<T>
>::type
>::type>
{
};
template<>
struct serializer_type<bool> : public basic_serializer_type<wrapped_serializer<bool_serializer> >
{
};
template<>
struct serializer_type<std::string> : public basic_serializer_type<wrapped_serializer<string_serializer> >
{
};
template<>
struct serializer_type<boost::posix_time::ptime>
: public basic_serializer_type<wrapped_serializer<boost_posix_time_ptime_serializer> >
{
};
template<>
struct serializer_type<boost::gregorian::date>
: public basic_serializer_type<wrapped_serializer<boost_gregorian_date_serializer> >
{
};
template<>
struct serializer_type<boost::posix_time::time_duration>
: public basic_serializer_type<wrapped_serializer<boost_posix_time_time_duration_serializer> >
{
};
// serializer for STL container types
template<typename C>
struct serialize_container_type
{
typedef C container_type;
typedef typename container_type::value_type value_type;
typedef serializer_type<value_type> base_serializer_type;
static const char* type_name() { return base_serializer_type::type_name(); }
static void serialize_child(container* n, const char* name, const container_type& value)
{
BOOST_FOREACH (const value_type& v, value)
{
base_serializer_type::serialize_child(n, name, v);
}
}
static void deserialize_child(const container* n, const char* name, container_type& value)
{
// clear the value first
value.clear();
BOOST_FOREACH (const element* e, *n)
{
if (e->name() != name)
continue;
value_type v;
base_serializer_type::deserialize(e, v);
value.push_back(v);
}
}
static element* schema(const std::string& name)
{
element* result = base_serializer_type::schema(name);
result->remove_attribute("minOccurs");
result->set_attribute("minOccurs", "0");
result->remove_attribute("maxOccurs");
result->set_attribute("maxOccurs", "unbounded");
return result;
}
static void register_type(type_map& types)
{
base_serializer_type::register_type(types);
}
};
template<typename T>
struct serializer_type<std::vector<T> > : public serialize_container_type<std::vector<T> >
{
};
template<typename T>
struct serializer_type<std::list<T> > : public serialize_container_type<std::list<T> >
{
};
template<typename T>
struct serializer_type<std::deque<T> > : public serialize_container_type<std::deque<T> >
{
};
template<typename T>
struct serializer_type<boost::optional<T> >
{
typedef T value_type;
typedef serializer_type<value_type> base_serializer_type;
static const char* type_name() { return base_serializer_type::type_name(); }
static void serialize_child(container* n, const char* name, const boost::optional<value_type>& value)
{
if (value.is_initialized())
base_serializer_type::serialize_child(n, name, value.get());
}
static void deserialize_child(const container* n, const char* name, boost::optional<value_type>& value)
{
// clear value first
value.reset();
element* e = n->find_first(name);
if (e != nullptr)
{
value_type v;
base_serializer_type::deserialize_child(n, name, v);
value = v;
}
}
static element* schema(const std::string& name)
{
element* result = base_serializer_type::schema(name);
result->remove_attribute("minOccurs");
result->set_attribute("minOccurs", "0");
result->remove_attribute("maxOccurs");
result->set_attribute("maxOccurs", "1");
return result;
}
static void register_type(type_map& types)
{
base_serializer_type::register_type(types);
}
};
// And finally, the implementation of serializer, deserializer and schema_creator.
template<typename T>
serializer& serializer::serialize_element(const char* name, const T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef serializer_type<value_type> type_serializer;
type_serializer::serialize_child(m_node, name, value);
return *this;
}
template<typename T>
serializer& serializer::serialize_attribute(const char* name, const T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef typename serializer_type<value_type>::type_serializer_type type_serializer;
element* e = dynamic_cast<element*>(m_node);
if (e == nullptr)
throw exception("can only create attributes for elements");
e->set_attribute(name, type_serializer::serialize_value(value));
return *this;
}
template<typename T>
deserializer& deserializer::deserialize_element(const char* name, T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef serializer_type<value_type> type_serializer;
type_serializer::deserialize_child(m_node, name, value);
return *this;
}
template<typename T>
deserializer& deserializer::deserialize_attribute(const char* name, T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef typename serializer_type<value_type>::type_serializer_type type_serializer;
const element* e = dynamic_cast<const element*>(m_node);
if (e == nullptr)
throw exception("can only deserialize attributes for elements");
else
{
std::string attr = e->get_attribute(name);
if (not attr.empty())
value = type_serializer::deserialize_value(attr);
}
return *this;
}
template<typename T>
schema_creator& schema_creator::add_element(const char* name, const T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef serializer_type<value_type> type_serializer;
m_node->append(type_serializer::schema(name));
std::string type_name = type_serializer::type_name();
// we might be known already
if (m_types.find(type_name) == m_types.end())
type_serializer::register_type(m_types);
return *this;
}
template<typename T>
schema_creator& schema_creator::add_attribute(const char* name, const T& value)
{
typedef typename boost::remove_const<typename boost::remove_reference<T>::type>::type value_type;
typedef serializer_type<value_type> type_serializer;
element* n(new element("xsd:attribute"));
std::string type_name = type_serializer::type_name();
n->set_attribute("name", name);
n->set_attribute("type", type_name);
if (m_types.find(type_name) == m_types.end())
type_serializer::register_type(m_types);
assert(m_node->parent() != nullptr);
if (m_node->parent() != nullptr)
m_node->parent()->append(n);
return *this;
}
#endif
}
}
#endif
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