Jeff Garland wrote: I'm not sure that this bug is related to boost::date_time as it occurs in boost::lexical_cast but I encounter it using the last cvs 1.33 version of it.

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Another question is about wide char support. As far as I understand, wstring is supported only through stringstream and facets?

Yes, but the new facets are much better than 1.32. They now support 'format string' based input and output. Here's how I'd implement your parsing problem for narrow and wide streams:

using namespace boost::gregorian; using namespace boost::posix_time; using namespace std;

time_input_facet* tf = new time_input_facet(); //below sets: %Y%m%dT%H%M%S%F for format. tf->set_iso_format(); stringstream ss; ss.imbue(std::locale(std::locale::classic(), tf)); ss.str("20021017T231217.12345"); ptime pt3; ss >> pt3; cout << "pt3: " << pt3 << endl;

wstringstream wss; wss.str(L"20021017T231217.12345");

//this time we'll set the format wtime_input_facet* wtif = new wtime_input_facet(L"%Y%m%dT%H%M%S%F"); // wtif->set_iso_format(); <-- this works too... wss.imbue(std::locale(std::locale::classic(), wtif)); ptime pt4; wss >> pt4;

wtime_facet* wtf = new wtime_facet(); wtf->set_iso_format(); wcout.imbue(std::locale(std::locale::classic(), wtf)); wcout << "pt4: " << pt4 << endl;

This code does not complie with MSVC++.NET 2003 with the following error: c:\usr\include\boost-1_33\boost\lexical_cast.hpp(150) : error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const NewSource' (or there is no acceptable conversion) c:\usr\include\boost-1_33\boost\lexical_cast.hpp(149) : while compiling class-template member function 'bool boost::detail::lexical_stream::operator <<(const Source &)' with [ Target=boost::date_time::time_input_facetboost::posix_time::ptime,wchar_t::fracional_seconds_type, Source=NewSource ] c:\usr\include\boost-1_33\boost\lexical_cast.hpp(218) : see reference to class template instantiation 'boost::detail::lexical_stream' being compiled with [ Target=boost::date_time::time_input_facetboost::posix_time::ptime,wchar_t::fracional_seconds_type, Source=NewSource ] c:\usr\include\boost-1_33\boost\date_time\time_facet.hpp(1172) : see reference to function template instantiation 'Target boost::lexical_cast::fracional_seconds_type,boost::date_time::time_input_facet::string_type>(const Source &)' being compiled with [ Target=boost::date_time::time_input_facetboost::posix_time::ptime,wchar_t::fracional_seconds_type, time_type=boost::posix_time::ptime, CharT=wchar_t, Source=boost::date_time::time_input_facetboost::posix_time::ptime,wchar_t::string_type ] c:\usr\include\boost-1_33\boost\date_time\time_facet.hpp(1162) : while compiling class-template member function 'void boost::date_time::time_input_facet::parse_frac_type(InItrT &,InItrT &,boost::date_time::time_input_facet::fracional_seconds_type &) const' with [ time_type=boost::posix_time::ptime, CharT=wchar_t, InItrT=std::istreambuf_iterator> ] c:\Documents and Settings\suralis\My Documents\Visual Studio Projects\boostdttest\dothings.cpp(24) : see reference to class template instantiation 'boost::date_time::time_input_facet' being compiled with [ time_type=boost::posix_time::ptime, CharT=wchar_t ] c:\usr\include\boost-1_33\boost\lexical_cast.hpp(150) : error C2228: left of '.fail' must have class/struct/union type The problem seems to be too deep in the library for me:( TIA -- Serge

Jeff Garland wrote:

This is VC7 I presume? I'm afraid that the new i/o code is incompatible with VC7, for a variety of reasons, and I have no intent to try and support it. Anyway, I may be able to fix the other parsing bug in time for 1.33, but that won't help you with wide chars...

Not exactly, it's VC7.1. It's a pity if new boost will be not compatible with a major Win32 compiler:( I'll try to compile the tests for date_time and see what happen. By the way, implicit_cast test failed to compile with vc-7_1 tool:( I guess that wchar support is not crucial for my purpose anyway 'cause I do not need any days of week etc.;) The problem is that the data is always in UTF-16 in Windows COM;)) Thanks for your effort -- Serge

Hi, <skip> Jeff Garland wrote:

This is VC7 I presume? I'm afraid that the new i/o code is incompatible with VC7, for a variety of reasons, and I have no intent to try and support it. Anyway, I may be able to fix the other parsing bug in time for 1.33, but that won't help you with wide chars...

<skip> I've found why it didn't work. Visual C++ has a compiler setting that force the compiler to treat wchar_t as a built-in compiler type instead of a typedef of short. Everything compiles and works perfectly with this setting (/Zc:wchar_t). Well, except of being the right thing it may be not very good for some Win32 API functions that seem to prefer to work with wchars as shorts:( Another question though:) ptime::hours() etc ruturn an extreamly lengthy typedef instead of long. Is it possible to "export" this typedef somehow in the library? Just to save a little bit typing? :))) -- Serge

Jeff Garland wrote:

On Mon, 18 Jul 2005 02:20:24 +0400, Serge Skorokhodov wrote

...

Another question though:)

ptime::hours() etc ruturn an extreamly lengthy typedef instead of long. Is it possible to "export" this typedef somehow in the library? Just to save a little bit typing? :)))

You can use time_duration::hour_type -- is that what you mean?

I think so and try it asap:) thank you. -- Serge