bool myparse(std::istream& input, const std::string filename, DataType &result)
{
namespace qi = boost::spirit::qi;
namespace ascii = boost::spirit::ascii;
namespace classic = boost::spirit::classic;
typedef std::istreambuf_iterator<char> base_iterator_type;
base_iterator_type in_begin(input);
// convert input iterator to forward iterator, usable by spirit parser
typedef boost::spirit::multi_pass<base_iterator_type> forward_iterator_type;
forward_iterator_type fwd_begin = boost::spirit::make_default_multi_pass(in_begin);
forward_iterator_type fwd_end;
// wrap forward iterator with position iterator, to record the position
typedef classic::position_iterator2<forward_iterator_type> pos_iterator_type;
pos_iterator_type position_begin(fwd_begin, fwd_end, filename);
pos_iterator_type position_end;
typedef forward_iterator_type used_iterator_type;
used_iterator_type s = fwd_begin;
used_iterator_type e = fwd_end;
// typedef pos_iterator_type used_iterator_type;
// used_iterator_type s = position_begin;
// used_iterator_type e = position_end;
qi::rule<used_iterator_type> skipper = ascii::space |
'#' >> *(ascii::char_ - qi::eol) >> qi::eol; // comment skipper,
Grammar<used_iterator_type, qi::rule<used_iterator_type> > g;
bool r = false;
try {
r = phrase_parse(s, e, g, skipper, result);
} catch(const qi::expectation_failure<used_iterator_type>& e)
{
std::stringstream msg;
// const classic::file_position_base<std::string>& pos = e.first.get_position();
// msg <<
// "parse error at file " << pos.file <<
// " line " << pos.line << " column " << pos.column << std::endl <<
// "'" << e.first.get_currentline() << "'" << std::endl <<
// std::setw(pos.column) << " " << "^- here";
msg << "parse error";
throw std::runtime_error(msg.str());
}
return r;
}
bool SurveyBuilder::buildQuestion(std::istream& input, Question*& output)
{
base_iterator_type in_begin(input);
// convert input iterator to forward iterator, usable by spirit parser
forward_iterator_type fwd_begin = boost::spirit::make_default_multi_pass(in_begin);
forward_iterator_type fwd_end;
// wrap forward iterator with position iterator, to record the position
pos_iterator_type position_begin(fwd_begin, fwd_end);
pos_iterator_type position_end;
bool ret = spirit::qi::phrase_parse(position_begin, position_end, grammar.question, spirit::ascii::blank, output);
return ret && position_begin == position_end;
}
// implementation
std::vector<double> parse(std::istream& input, const std::string& filename)
{
// iterate over stream input
typedef std::istreambuf_iterator<char> base_iterator_type;
base_iterator_type in_begin(input);
// convert input iterator to forward iterator, usable by spirit parser
typedef boost::spirit::multi_pass<base_iterator_type> forward_iterator_type;
forward_iterator_type fwd_begin = boost::spirit::make_default_multi_pass(in_begin);
forward_iterator_type fwd_end;
// wrap forward iterator with position iterator, to record the position
typedef classic::position_iterator2<forward_iterator_type> pos_iterator_type;
pos_iterator_type position_begin(fwd_begin, fwd_end, filename);
pos_iterator_type position_end;
// prepare output
std::vector<double> output;
// parse
try
{
qi::phrase_parse(
position_begin, position_end, // iterators over input
qi::double_ > *(',' > qi::double_) >> qi::eoi, // recognize list of doubles
ascii::space | '#' >> *(ascii::char_ - qi::eol) >> qi::eol, // comment skipper
output); // doubles are stored into this object
}
catch(const qi::expectation_failure<pos_iterator_type>& e)
{
const classic::file_position_base<std::string>& pos = e.first.get_position();
std::stringstream msg;
msg <<
"parse error at file " << pos.file <<
" line " << pos.line << " column " << pos.column << std::endl <<
"'" << e.first.get_currentline() << "'" << std::endl <<
std::setw(pos.column) << " " << "^- here";
throw std::runtime_error(msg.str());
}
// return result
return output;
}
bool SurveyBuilder::buildSurvey(std::istream& input, Survey*& output)
{
base_iterator_type in_begin(input);
// convert input iterator to forward iterator, usable by spirit parser
forward_iterator_type fwd_begin = boost::spirit::make_default_multi_pass(in_begin);
forward_iterator_type fwd_end;
// wrap forward iterator with position iterator, to record the position
pos_iterator_type position_begin(fwd_begin, fwd_end);
pos_iterator_type position_end;
bool ret;
try {
ret = spirit::qi::phrase_parse(position_begin, position_end, grammar, spirit::ascii::blank, output);
} catch(const qi::expectation_failure<pos_iterator_type>& e) {
const classic::file_position_base<std::string>& pos = e.first.get_position();
std::stringstream msg;
msg << "parse error at line " << pos.line << " column " << pos.column << std::endl;
msg << "'" << e.first.get_currentline() << "'" << std::endl;
throw std::runtime_error(msg.str());
}
return ret && position_begin == position_end;
}
int ParseVRMLFile(MultiBody *aMB,
std::string aFileName,
vector<BodyGeometricalData> &aListOfURLs,
bool ReadGeometry)
{
if (aFileName == std::string("")) {
std::cerr << "SpiritVRMLReader: Filename is empty." << std::endl;
return 0;
}
ifstream aif;
SkipGrammar aSkipGrammar;
SpiritOpenHRP< Actions > aSpiritOpenHRP;
aif.open(aFileName.c_str(),ifstream::in|ifstream::binary);
if (!aif.is_open())
{
cout << "Unable to open file "<< aFileName<< endl;
return 0;
}
else {
/* if (aSpiritOpenHRP.getVerbose()>10)
{
cout << "Succeeded in opening " << aFileName <<endl;
} */
}
aif.open(aFileName.c_str(),ifstream::in|ifstream::binary);
typedef multi_pass<istreambuf_iterator<char> > multi_pass_iterator_t;
typedef istream::char_type char_t;
multi_pass_iterator_t
in_begin(make_multi_pass(istreambuf_iterator<char_t>(aif))),
in_end(make_multi_pass(istreambuf_iterator<char_t>()));
typedef position_iterator<multi_pass_iterator_t> iterator_t;
iterator_t first(in_begin, in_end, aFileName), last;
if (!parse(first,last,aSpiritOpenHRP,aSkipGrammar).full)
{
file_position fp_cur;
// Store the current file position
fp_cur = last.get_position();
ODEBUG("Display - Current file: " << fp_cur.file );
ODEBUG( "Line : " << fp_cur.line
<< " Column : " << fp_cur.column
<< endl);
}
aif.close();
if (ReadGeometry)
{
// Iterate over the included files if there is some.
vector<BodyGeometricalData*> aLOU = aSpiritOpenHRP.actions.m_DataForParsing.m_ListOfURLs;
string Path;
unsigned int npos = aFileName.find_last_of('/');
Path = aFileName.substr(0,npos+1);
ODEBUG( "Path: " << Path
<< " Size of m_ListOfURLs: "
<< aSpiritOpenHRP.actions.m_DataForParsing.m_ListOfURLs.size());
for(unsigned int iIndexBDG=0;
iIndexBDG<aLOU.size();
iIndexBDG++)
{
const vector<string > URLs = aLOU[iIndexBDG]->getURLs();
ODEBUG(" i: " << iIndexBDG << " URLs.size():" << URLs.size());
for(unsigned int j=0;j<URLs.size();j++)
{
string GeomFileName = Path + URLs[j];
aif.open(GeomFileName.c_str(),ifstream::in|ifstream::binary);
if (!aif.is_open())
{
ODEBUG(" Unable to open :" << GeomFileName );
}
else
{
ODEBUG3( " Open :" << GeomFileName );
multi_pass_iterator_t
lin_begin(make_multi_pass(istreambuf_iterator<char_t>(aif))),
lin_end(make_multi_pass(istreambuf_iterator<char_t>()));
iterator_t lfirst(lin_begin, lin_end, URLs[j]), llast;
*aSpiritOpenHRP.actions.m_DataForParsing.m_LOUIndex =
iIndexBDG;
if (!parse(lfirst,llast,aSpiritOpenHRP,aSkipGrammar).full)
{
file_position fp_cur;
// Store the current file position
fp_cur = lfirst.get_position();
ODEBUG("Display - Current file: " << fp_cur.file );
ODEBUG( "Line : " << fp_cur.line
<< " Column : " << fp_cur.column
<< endl);
}
ODEBUG3(" Finished");
}
aif.close();
}
}
// Copy the list of URLS.
aListOfURLs.resize(aLOU.size());
vector<BodyGeometricalData *>::iterator it_BGD = aLOU.begin();
unsigned int i=0;
while (it_BGD!= aLOU.end())
{
aListOfURLs[i] = *(*it_BGD);
i++;
it_BGD++;
}
};
// Copy multibody structure.
*aMB = aSpiritOpenHRP.actions.m_DataForParsing.m_MultiBody;
return 1;
}