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#include <sstream>
#include <iostream>
#include <boost/lexical_cast.hpp>
#include <boost/filesystem.hpp>
#include <boost/algorithm/string.hpp>
#include <libxml++/libxml++.h>
#include "xml.h"
#include "exceptions.h"
#include "util.h"
using namespace std;
using namespace boost;
using namespace libdcp;
XMLNode::XMLNode ()
: _node (0)
{
}
XMLNode::XMLNode (xmlpp::Node const * node)
: _node (node)
{
}
xmlpp::Node *
XMLNode::node_child (string name)
{
list<xmlpp::Node*> n = node_children (name);
if (n.size() > 1) {
boost::throw_exception (XMLError ("duplicate XML tag " + name));
} else if (n.empty ()) {
boost::throw_exception (XMLError ("missing XML tag " + name + " in " + _node->get_name()));
}
return n.front ();
}
list<xmlpp::Node*>
XMLNode::node_children (string name)
{
/* XXX: using find / get_path should work here, but I can't follow
how get_path works.
*/
xmlpp::Node::NodeList c = _node->get_children ();
list<xmlpp::Node*> n;
for (xmlpp::Node::NodeList::iterator i = c.begin (); i != c.end(); ++i) {
if ((*i)->get_name() == name) {
n.push_back (*i);
}
}
_taken.push_back (name);
return n;
}
string
XMLNode::string_child (string name)
{
return XMLNode (node_child (name)).content ();
}
string
XMLNode::optional_string_child (string name)
{
list<xmlpp::Node*> nodes = node_children (name);
if (nodes.size() > 2) {
boost::throw_exception (XMLError ("duplicate XML tag " + name));
}
if (nodes.empty ()) {
return "";
}
return string_child (name);
}
ContentKind
XMLNode::kind_child (string name)
{
return content_kind_from_string (string_child (name));
}
Fraction
XMLNode::fraction_child (string name)
{
return Fraction (string_child (name));
}
int64_t
XMLNode::int64_child (string name)
{
string s = string_child (name);
erase_all (s, " ");
return lexical_cast<int64_t> (s);
}
int64_t
XMLNode::optional_int64_child (string name)
{
list<xmlpp::Node*> nodes = node_children (name);
if (nodes.size() > 2) {
boost::throw_exception (XMLError ("duplicate XML tag " + name));
}
if (nodes.empty ()) {
return 0;
}
return int64_child (name);
}
float
XMLNode::float_child (string name)
{
return lexical_cast<float> (string_child (name));
}
void
XMLNode::ignore_child (string name)
{
_taken.push_back (name);
}
Time
XMLNode::time_attribute (string name)
{
return Time (string_attribute (name));
}
string
XMLNode::string_attribute (string name)
{
xmlpp::Element const * e = dynamic_cast<const xmlpp::Element *> (_node);
if (!e) {
boost::throw_exception (XMLError ("missing attribute"));
}
xmlpp::Attribute* a = e->get_attribute (name);
if (!a) {
boost::throw_exception (XMLError ("missing attribute"));
}
return a->get_value ();
}
string
XMLNode::optional_string_attribute (string name)
{
xmlpp::Element const * e = dynamic_cast<const xmlpp::Element *> (_node);
if (!e) {
return "";
}
xmlpp::Attribute* a = e->get_attribute (name);
if (!a) {
return "";
}
return a->get_value ();
}
float
XMLNode::float_attribute (string name)
{
return lexical_cast<float> (string_attribute (name));
}
int64_t
XMLNode::int64_attribute (string name)
{
return lexical_cast<int64_t> (string_attribute (name));
}
int64_t
XMLNode::optional_int64_attribute (string name)
{
string const s = optional_string_attribute (name);
if (s.empty ()) {
return 0;
}
return lexical_cast<int64_t> (s);
}
optional<bool>
XMLNode::optional_bool_attribute (string name)
{
string const s = optional_string_attribute (name);
if (s.empty ()) {
return optional<bool> ();
}
if (s == "1" || s == "yes") {
return optional<bool> (true);
}
return optional<bool> (false);
}
optional<Color>
XMLNode::optional_color_attribute (string name)
{
string const s = optional_string_attribute (name);
if (s.empty ()) {
return optional<Color> ();
}
return optional<Color> (Color (s));
}
void
XMLNode::done ()
{
xmlpp::Node::NodeList c = _node->get_children ();
for (xmlpp::Node::NodeList::iterator i = c.begin(); i != c.end(); ++i) {
if (dynamic_cast<xmlpp::Element *> (*i) && find (_taken.begin(), _taken.end(), (*i)->get_name()) == _taken.end ()) {
boost::throw_exception (XMLError ("unexpected XML node " + (*i)->get_name()));
}
}
}
string
XMLNode::content ()
{
string content;
xmlpp::Node::NodeList c = _node->get_children ();
for (xmlpp::Node::NodeList::const_iterator i = c.begin(); i != c.end(); ++i) {
xmlpp::ContentNode const * v = dynamic_cast<xmlpp::ContentNode const *> (*i);
if (v) {
content += v->get_content ();
}
}
return content;
}
XMLFile::XMLFile (string file, string root_name)
{
if (!filesystem::exists (file)) {
boost::throw_exception (FileError ("XML file does not exist", file));
}
_parser = new xmlpp::DomParser;
_parser->parse_file (file);
if (!_parser) {
boost::throw_exception (XMLError ("could not parse XML"));
}
_node = _parser->get_document()->get_root_node ();
if (_node->get_name() != root_name) {
boost::throw_exception (XMLError ("unrecognised root node"));
}
}
XMLFile::~XMLFile ()
{
delete _parser;
}
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