void load_file2(std::wstring& wstrOut, std::wistream& wistreamIn)
{
wstrOut.erase();
//bad() 如果出现错误则返回true
if(wistreamIn.bad())
return;
wstrOut.reserve(wistreamIn.rdbuf()->in_avail());
wchar_t c;
//get() 读取字符
while(wistreamIn.get(c))
{
if(wstrOut.capacity() == wstrOut.size())
wstrOut.reserve(wstrOut.capacity() * 3);
wstrOut.append(1, c);
}
}
int bmc2ly( std::wistream &wistream
, bool lilypond, bool musicxml
, bool include_locations, std::string instrument, bool no_tagline
) {
std::istreambuf_iterator<wchar_t> wcin_begin(wistream.rdbuf()), wcin_end;
std::wstring source(wcin_begin, wcin_end);
typedef std::wstring::const_iterator iterator_type;
iterator_type iter = source.begin();
iterator_type const end = source.end();
typedef ::bmc::braille::error_handler<iterator_type> error_handler_type;
error_handler_type error_handler(iter, end);
typedef ::bmc::braille::score_grammar<iterator_type> parser_type;
parser_type parser(error_handler);
boost::spirit::traits::attribute_of<parser_type>::type score;
bool const success = parse(iter, end, parser, score);
if (success and iter == end) {
::bmc::braille::compiler<error_handler_type> compile(error_handler);
if (compile(score)) {
std::wcerr << error_handler;
if (lilypond) {
::bmc::lilypond::generator generate(std::cout, true, true, include_locations);
if (not instrument.empty()) generate.instrument(instrument);
if (no_tagline) generate.remove_tagline();
generate(score);
}
if (musicxml) {
::bmc::musicxml(std::cout, score);
}
return EXIT_SUCCESS;
} else {
std::wcerr << "Failed to compile:" << std::endl << error_handler << std::endl;
}
} else {
std::wcerr << "Failed to Parse:" << std::endl << source << std::endl;
}
return EXIT_FAILURE;
}