本文整理汇总了C++中Ptree::data方法的典型用法代码示例。如果您正苦于以下问题：C++ Ptree::data方法的具体用法？C++ Ptree::data怎么用？C++ Ptree::data使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Ptree的用法示例。
在下文中一共展示了Ptree::data方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: read_xml_node
void read_xml_node( pugi::xml_node node, Ptree &pt, int flags)
{
typedef typename Ptree::key_type::value_type Ch;
switch ( node.type() )
{
case pugi::node_element:
{
Ptree &tmp = pt.push_back(std::make_pair( node.name(), Ptree()))->second;
for ( pugi::xml_attribute attr = node.first_attribute(); attr; attr = attr.next_attribute() )
tmp.put( xmlattr<Ch>() + "." + attr.name(), attr.value());
for ( pugi::xml_node child = node.first_child(); child; child = child.next_sibling())
read_xml_node(child, tmp, flags);
}
break;
case pugi::node_pcdata:
{
if (flags & no_concat_text)
pt.push_back(std::make_pair(xmltext<Ch>(), Ptree( node.value() )));
else
pt.data() += node.value();
}
break;
case pugi::node_comment:
{
if (!(flags & no_comments))
pt.push_back(std::make_pair(xmlcomment<Ch>(), Ptree( node.value() )));
}
break;
default:
// skip other types
break;
}
}示例2: read_xml_node
void read_xml_node(detail::pdalboostrapidxml::xml_node<Ch> *node,
Ptree &pt, int flags)
{
using namespace detail::pdalboostrapidxml;
switch (node->type())
{
// Element nodes
case node_element:
{
// Create node
Ptree &pt_node = pt.push_back(std::make_pair(node->name(),
Ptree()))->second;
// Copy attributes
if (node->first_attribute())
{
Ptree &pt_attr_root = pt_node.push_back(
std::make_pair(xmlattr<typename Ptree::key_type>(), Ptree()))->second;
for (xml_attribute<Ch> *attr = node->first_attribute();
attr; attr = attr->next_attribute())
{
Ptree &pt_attr = pt_attr_root.push_back(
std::make_pair(attr->name(), Ptree()))->second;
pt_attr.data() = typename Ptree::key_type(attr->value(), attr->value_size());
}
}
// Copy children
for (xml_node<Ch> *child = node->first_node();
child; child = child->next_sibling())
read_xml_node(child, pt_node, flags);
}
break;
// Data nodes
case node_data:
case node_cdata:
{
if (flags & no_concat_text)
pt.push_back(std::make_pair(xmltext<typename Ptree::key_type>(),
Ptree(node->value())));
else
pt.data() += typename Ptree::key_type(node->value(), node->value_size());
}
break;
// Comment nodes
case node_comment:
{
if (!(flags & no_comments))
pt.push_back(std::make_pair(xmlcomment<typename Ptree::key_type>(),
Ptree(typename Ptree::key_type(node->value(), node->value_size()))));
}
break;
default:
// Skip other node types
break;
}
}示例3:
typename Ptree::size_type total_data_size(const Ptree &pt)
{
typename Ptree::size_type size = pt.data().size();
for (typename Ptree::const_iterator it = pt.begin(); it != pt.end(); ++it)
size += total_data_size(it->second);
return size;
}示例4: write_info_helper
void write_info_helper(std::basic_ostream<typename Ptree::char_type> &stream,
const Ptree &pt,
int indent)
{
// Character type
typedef typename Ptree::char_type Ch;
// Write data
if (indent >= 0)
{
if (!pt.data().empty())
{
std::basic_string<Ch> data = create_escapes(pt.template get_own<std::basic_string<Ch> >());
if (is_simple_data(data))
stream << Ch(' ') << data << Ch('\n');
else
stream << Ch(' ') << Ch('\"') << data << Ch('\"') << Ch('\n');
}
else if (pt.empty())
stream << Ch(' ') << Ch('\"') << Ch('\"') << Ch('\n');
else
stream << Ch('\n');
}
// Write keys
if (!pt.empty())
{
// Open brace
if (indent >= 0)
stream << std::basic_string<Ch>(4 * indent, Ch(' ')) << Ch('{') << Ch('\n');
// Write keys
typename Ptree::const_iterator it = pt.begin();
for (; it != pt.end(); ++it)
{
// Output key
std::basic_string<Ch> key = create_escapes(it->first);
stream << std::basic_string<Ch>(4 * (indent + 1), Ch(' '));
if (is_simple_key(key))
stream << key;
else
stream << Ch('\"') << key << Ch('\"');
// Output data and children
write_info_helper(stream, it->second, indent + 1);
}
// Close brace
if (indent >= 0)
stream << std::basic_string<Ch>(4 * indent, Ch(' ')) << Ch('}') << Ch('\n');
}
}示例5: write_ini
void write_ini(std::basic_ostream<
typename Ptree::key_type::value_type
> &stream,
const Ptree &pt,
int flags = 0)
{
using detail::check_dupes;
typedef typename Ptree::key_type::value_type Ch;
typedef std::basic_string<Ch> Str;
BOOST_ASSERT(validate_flags(flags));
(void)flags;
if (!pt.data().empty())
BOOST_PROPERTY_TREE_THROW(ini_parser_error(
"ptree has data on root", "", 0));
check_dupes(pt);
for (typename Ptree::const_iterator it = pt.begin(), end = pt.end();
it != end; ++it)
{
check_dupes(it->second);
if (it->second.empty()) {
stream << it->first << Ch('=')
<< it->second.template get_value<
std::basic_string<Ch> >()
<< Ch('\n');
} else {
if (!it->second.data().empty())
BOOST_PROPERTY_TREE_THROW(ini_parser_error(
"mixed data and children", "", 0));
stream << Ch('[') << it->first << Ch(']') << Ch('\n');
for (typename Ptree::const_iterator it2 = it->second.begin(),
end2 = it->second.end(); it2 != end2; ++it2)
{
if (!it2->second.empty())
BOOST_PROPERTY_TREE_THROW(ini_parser_error(
"ptree is too deep", "", 0));
stream << it2->first << Ch('=')
<< it2->second.template get_value<
std::basic_string<Ch> >()
<< Ch('\n');
}
}
}
}示例6: write_xml_element
void write_xml_element(std::basic_ostream<typename Ptree::key_type::value_type> &stream,
const std::basic_string<typename Ptree::key_type::value_type> &key,
const Ptree &pt,
int indent,
const xml_writer_settings<typename Ptree::key_type::value_type> & settings)
{
typedef typename Ptree::key_type::value_type Ch;
typedef typename Ptree::const_iterator It;
bool want_pretty = settings.indent_count > 0;
// Find if elements present
bool has_elements = false;
bool has_attrs_only = pt.data().empty();
for (It it = pt.begin(), end = pt.end(); it != end; ++it)
{
if (it->first != xmlattr<Ch>() )
{
has_attrs_only = false;
if (it->first != xmltext<Ch>())
{
has_elements = true;
break;
}
}
}
// Write element
if (pt.data().empty() && pt.empty()) // Empty key
{
if (indent >= 0)
{
write_xml_indent(stream,indent,settings);
stream << Ch('<') << key <<
Ch('/') << Ch('>');
if (want_pretty)
stream << Ch('\n');
}
}
else // Nonempty key
{
// Write opening tag, attributes and data
if (indent >= 0)
{
// Write opening brace and key
write_xml_indent(stream,indent,settings);
stream << Ch('<') << key;
// Write attributes
if (optional<const Ptree &> attribs = pt.get_child_optional(xmlattr<Ch>()))
for (It it = attribs.get().begin(); it != attribs.get().end(); ++it)
stream << Ch(' ') << it->first << Ch('=')
<< Ch('"')
<< encode_char_entities(
it->second.template get_value<std::basic_string<Ch> >())
<< Ch('"');
if ( has_attrs_only )
{
// Write closing brace
stream << Ch('/') << Ch('>');
if (want_pretty)
stream << Ch('\n');
}
else
{
// Write closing brace
stream << Ch('>');
// Break line if needed and if we want pretty-printing
if (has_elements && want_pretty)
stream << Ch('\n');
}
}
// Write data text, if present
if (!pt.data().empty())
write_xml_text(stream,
pt.template get_value<std::basic_string<Ch> >(),
indent + 1, has_elements && want_pretty, settings);
// Write elements, comments and texts
for (It it = pt.begin(); it != pt.end(); ++it)
{
if (it->first == xmlattr<Ch>())
continue;
else if (it->first == xmlcomment<Ch>())
write_xml_comment(stream,
it->second.template get_value<std::basic_string<Ch> >(),
indent + 1, want_pretty, settings);
else if (it->first == xmltext<Ch>())
write_xml_text(stream,
it->second.template get_value<std::basic_string<Ch> >(),
indent + 1, has_elements && want_pretty, settings);
else
write_xml_element(stream, it->first, it->second,
indent + 1, settings);
}
//.........这里部分代码省略.........
示例7: write_xml_element
void write_xml_element(std::basic_ostream<typename Ptree::char_type> &stream,
const std::basic_string<typename Ptree::char_type> &key,
const Ptree &pt,
int indent)
{
typedef typename Ptree::char_type Ch;
typedef typename std::basic_string<Ch> Str;
typedef typename Ptree::const_iterator It;
// Find if elements present
bool has_elements = false;
for (It it = pt.begin(), end = pt.end(); it != end; ++it)
if (it->first != xmlattr<Ch>() &&
it->first != xmltext<Ch>())
{
has_elements = true;
break;
}
// Write element
if (pt.data().empty() && pt.empty()) // Empty key
{
if (indent >= 0)
stream << Str(4 * indent, Ch(' ')) << Ch('<') << key <<
Ch('/') << Ch('>') << std::endl;
}
else // Nonempty key
{
// Write opening tag, attributes and data
if (indent >= 0)
{
// Write opening brace and key
stream << Str(4 * indent, Ch(' '));
stream << Ch('<') << key;
// Write attributes
if (optional<const Ptree &> attribs = pt.get_child_optional(xmlattr<Ch>()))
for (It it = attribs.get().begin(); it != attribs.get().end(); ++it)
stream << Ch(' ') << it->first << Ch('=') <<
Ch('"') << it->second.template get_own<std::basic_string<Ch> >() << Ch('"');
// Write closing brace
stream << Ch('>');
// Break line if needed
if (has_elements)
stream << Ch('\n');
}
// Write data text, if present
if (!pt.data().empty())
write_xml_text(stream, pt.template get_own<std::basic_string<Ch> >(), indent + 1, has_elements);
// Write elements, comments and texts
for (It it = pt.begin(); it != pt.end(); ++it)
{
if (it->first == xmlattr<Ch>())
continue;
else if (it->first == xmlcomment<Ch>())
write_xml_comment(stream, it->second.template get_own<std::basic_string<Ch> >(), indent + 1);
else if (it->first == xmltext<Ch>())
write_xml_text(stream, it->second.template get_own<std::basic_string<Ch> >(), indent + 1, has_elements);
else
write_xml_element(stream, it->first, it->second, indent + 1);
}
// Write closing tag
if (indent >= 0)
{
if (has_elements)
stream << Str(4 * indent, Ch(' '));
stream << Ch('<') << Ch('/') << key << Ch('>') << std::endl;
}
}
}