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/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): Clement Jamin
*
* Copyright (C) 2016 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#include <string>
#include <vector>
#include <iostream>
#include <fstream>
#include <ctime>
template<typename value_type = std::string>
class Simple_XML_exporter {
public:
typedef value_type Value_type;
typedef std::vector<value_type> Element;
typedef std::map<std::string, value_type> Element_with_map;
typedef std::vector<Element> List_of_elements;
Simple_XML_exporter(
const std::string &list_name,
const std::string &element_name,
const std::vector<std::string> &subelement_names,
bool add_timestamp = true)
: m_list_name(list_name),
m_element_name(element_name),
m_subelement_names(subelement_names),
m_add_timestamp(add_timestamp) { }
bool add_element(const Element &element) {
if (element.size() == m_subelement_names.size()) {
m_list_of_elements.push_back(element);
return true;
} else {
std::cerr << "ERROR: element.size() == m_subelement_names.size()" << std::endl;
return false;
}
}
bool add_element(Element_with_map &element) {
Element elt;
std::vector<std::string>::const_iterator
it_subelement_name = m_subelement_names.begin();
std::vector<std::string>::const_iterator
it_subelement_name_end = m_subelement_names.end();
for (; it_subelement_name != it_subelement_name_end; ++it_subelement_name) {
elt.push_back(element[*it_subelement_name]);
}
return add_element(elt);
}
bool export_to_xml(const std::string &filename) const {
std::ofstream xmlfile;
xmlfile.open(filename.c_str());
xmlfile << "<?xml version='1.0'?>" << std::endl;
xmlfile << "<" << m_list_name << ">" << std::endl;
typename List_of_elements::const_iterator it_element = m_list_of_elements.begin();
typename List_of_elements::const_iterator it_element_end = m_list_of_elements.end();
for (int id = 1; it_element != it_element_end; ++it_element, ++id) {
xmlfile << " <" << m_element_name << ">" << std::endl;
std::vector<std::string>::const_iterator
it_subelement_name = m_subelement_names.begin();
std::vector<std::string>::const_iterator
it_subelement_name_end = m_subelement_names.end();
if (m_add_timestamp)
xmlfile << " <id> " << time(NULL) << " </id>" << std::endl;
for (int i = 0;
it_subelement_name != it_subelement_name_end;
++it_subelement_name, ++i) {
xmlfile
<< " <" << *it_subelement_name << "> "
<< (*it_element)[i]
<< " </" << *it_subelement_name << ">" << std::endl;
}
xmlfile << " </" << m_element_name << ">" << std::endl;
}
xmlfile << "</" << m_list_name << ">" << std::endl;
xmlfile.close();
return 0;
}
protected:
std::string m_list_name;
std::string m_element_name;
std::vector<std::string> m_subelement_names;
List_of_elements m_list_of_elements;
bool m_add_timestamp;
};
template<typename value_type = std::string>
class Streaming_XML_exporter {
public:
typedef value_type Value_type;
typedef std::vector<value_type> Element;
typedef std::map<std::string, value_type> Element_with_map;
typedef std::vector<Element> List_of_elements;
Streaming_XML_exporter(
const std::string &filename,
const std::string &list_name,
const std::string &element_name,
const std::vector<std::string> &subelement_names,
bool add_timestamp = true)
: m_list_name(list_name),
m_element_name(element_name),
m_subelement_names(subelement_names),
m_add_timestamp(add_timestamp) {
m_xml_fstream.open(filename.c_str());
if (m_xml_fstream.good()) {
m_xml_fstream << "<?xml version='1.0'?>" << std::endl;
m_xml_fstream << "<" << m_list_name << ">" << std::endl;
} else {
std::cerr << "Could not open file '" << filename << "'." << std::endl;
}
}
virtual ~Streaming_XML_exporter() {
close_file();
}
void close_file() {
m_xml_fstream.close();
}
bool add_element(const Element &element) {
if (element.size() == m_subelement_names.size()) {
m_xml_fstream << " <" << m_element_name << ">" << std::endl;
std::vector<std::string>::const_iterator
it_subelement_name = m_subelement_names.begin();
std::vector<std::string>::const_iterator
it_subelement_name_end = m_subelement_names.end();
if (m_add_timestamp) {
m_xml_fstream << " <id> " << time(NULL) << " </id>" << std::endl;
}
for (int i = 0;
it_subelement_name != it_subelement_name_end;
++it_subelement_name, ++i) {
m_xml_fstream
<< " <" << *it_subelement_name << "> "
<< element[i]
<< " </" << *it_subelement_name << ">" << std::endl;
}
m_xml_fstream << " </" << m_element_name << ">" << std::endl;
// Save current pointer position
std::ofstream::streampos pos = m_xml_fstream.tellp();
// Close the XML file (temporarily) so that the XML file is always correct
m_xml_fstream << "</" << m_list_name << ">" << std::endl;
// Restore the pointer position so that the next "add_element" will overwrite
// the end of the file
m_xml_fstream.seekp(pos);
m_xml_fstream.flush();
return true;
} else {
std::cerr << "ERROR: element.size() == m_subelement_names.size()" << std::endl;
return false;
}
}
bool add_element(Element_with_map &element) {
Element elt;
std::vector<std::string>::const_iterator
it_subelement_name = m_subelement_names.begin();
std::vector<std::string>::const_iterator
it_subelement_name_end = m_subelement_names.end();
for (; it_subelement_name != it_subelement_name_end; ++it_subelement_name) {
elt.push_back(element[*it_subelement_name]);
}
return add_element(elt);
}
protected:
std::ofstream m_xml_fstream;
std::string m_list_name;
std::string m_element_name;
std::vector<std::string> m_subelement_names;
bool m_add_timestamp;
};
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