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'); } }
void write_json_helper(std::basic_ostream<typename Ptree::key_type::value_type> &stream, const Ptree &pt, int indent, bool pretty) { typedef typename Ptree::key_type::value_type Ch; typedef typename std::basic_string<Ch> Str; // Value or object or array if (indent > 0 && pt.empty()) { // Write value Str data = create_escapes(pt.template get_value<Str>()); stream << Ch('"') << data << Ch('"'); } else if (indent > 0 && pt.count(Str()) == pt.size()) { // Write array stream << Ch('['); if (pretty) stream << Ch('\n'); typename Ptree::const_iterator it = pt.begin(); for (; it != pt.end(); ++it) { if (pretty) stream << Str(4 * (indent + 1), Ch(' ')); write_json_helper(stream, it->second, indent + 1, pretty); if (lslboost::next(it) != pt.end()) stream << Ch(','); if (pretty) stream << Ch('\n'); } stream << Str(4 * indent, Ch(' ')) << Ch(']'); } else { // Write object stream << Ch('{'); if (pretty) stream << Ch('\n'); typename Ptree::const_iterator it = pt.begin(); for (; it != pt.end(); ++it) { if (pretty) stream << Str(4 * (indent + 1), Ch(' ')); stream << Ch('"') << create_escapes(it->first) << Ch('"') << Ch(':'); if (pretty) { if (it->second.empty()) stream << Ch(' '); else stream << Ch('\n') << Str(4 * (indent + 1), Ch(' ')); } write_json_helper(stream, it->second, indent + 1, pretty); if (lslboost::next(it) != pt.end()) stream << Ch(','); if (pretty) stream << Ch('\n'); } if (pretty) stream << Str(4 * indent, Ch(' ')); stream << Ch('}'); } }
bool verify_json(const Ptree &pt, int depth) { typedef typename Ptree::char_type Ch; typedef typename std::basic_string<Ch> Str; // Root ptree cannot have data if (depth == 0 && !pt.template get_own<Str>().empty()) return false; // Ptree cannot have both children and data if (!pt.template get_own<Str>().empty() && !pt.empty()) return false; // Check children typename Ptree::const_iterator it = pt.begin(); for (; it != pt.end(); ++it) if (!verify_json(it->second, depth + 1)) return false; // Success return true; }
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); } // Write closing tag if (indent >= 0 && !has_attrs_only) { if (has_elements) write_xml_indent(stream,indent,settings); stream << Ch('<') << Ch('/') << key << Ch('>'); if (want_pretty) stream << Ch('\n'); } } }
void read_ini(std::basic_istream< typename Ptree::key_type::value_type> &stream, Ptree &pt) { typedef typename Ptree::key_type::value_type Ch; typedef std::basic_string<Ch> Str; const Ch semicolon = stream.widen(';'); const Ch hash = stream.widen('#'); const Ch lbracket = stream.widen('['); const Ch rbracket = stream.widen(']'); Ptree local; unsigned long line_no = 0; Ptree *section = 0; Str line; // For all lines while (stream.good()) { // Get line from stream ++line_no; std::getline(stream, line); if (!stream.good() && !stream.eof()) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "read error", "", line_no)); // If line is non-empty line = property_tree::detail::trim(line, stream.getloc()); if (!line.empty()) { // Comment, section or key? if (line[0] == semicolon || line[0] == hash) { // Ignore comments } else if (line[0] == lbracket) { // If the previous section was empty, drop it again. if (section && section->empty()) local.pop_back(); typename Str::size_type end = line.find(rbracket); if (end == Str::npos) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "unmatched '['", "", line_no)); Str key = property_tree::detail::trim( line.substr(1, end - 1), stream.getloc()); if (local.find(key) != local.not_found()) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "duplicate section name", "", line_no)); section = &local.push_back( std::make_pair(key, Ptree()))->second; } else { Ptree &container = section ? *section : local; typename Str::size_type eqpos = line.find(Ch('=')); if (eqpos == Str::npos) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "'=' character not found in line", "", line_no)); if (eqpos == 0) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "key expected", "", line_no)); Str key = property_tree::detail::trim( line.substr(0, eqpos), stream.getloc()); Str data = property_tree::detail::trim( line.substr(eqpos + 1, Str::npos), stream.getloc()); if (container.find(key) != container.not_found()) BOOST_PROPERTY_TREE_THROW(ini_parser_error( "duplicate key name", "", line_no)); container.push_back(std::make_pair(key, Ptree(data))); } } } // If the last section was empty, drop it again. if (section && section->empty()) local.pop_back(); // Swap local ptree with result ptree pt.swap(local); }
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; } } }