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[filesystem] Path and UNCs
by Peter Barker 05 Sep '08

05 Sep '08

Hello, I'm using boost::filesystem in my application. It appears to work ok with UNC paths* but until now hadn't considered if there might be any problems lurking as they're quite different to "C:\something" or "/usr/something"? I had a look in the documentation but could not see UNCs mentioned. Regards, Pete

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Comparing a bimap::vector_of with a vector
by Sean Farrow 05 Sep '08

05 Sep '08

Hi: I have the following defines: typedef boost::bimaps::bimap<boost::bimaps::vector_of<std::bitset<6>>, int> SignsList_type; SignsList_type SignsList; I need to compare each std::bitset in the left-hand side of the map i.e in the vector with an std::vector I am fillingin a boost::foreach loop. What is the best way of doing this? Any help apreciated. Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3417 (20080905) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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Re: [Boost-users] How does boost.serialization do with BOM in text/xmlfiles
by Tan, Tom (Shanghai) 05 Sep '08

05 Sep '08

> what is BOM? >Probably "Byte Order Mark", see http://en.wikipedia.org/wiki/Byte-order_mark Yes, That's what I meant. I was testing the demo_xml_load.cpp and demo_xml_save.cpp available in the boost.serialization example. By simply opening demo_save.xml produced by demo_xml_save.exe with XML copy editor(http://xml-copy-editor.sourceforge.net/) and saving it back, demo_xml_load.exe would crash. I compared the two files with Winmerge. It said it's identical. by studying the hex view, I later found it's because the 3-byte UTF-8 BOM was inserted to the beginning of file. It would not change the data, and in many cases was ignored by the text editors. I thinking that Boost.serialization should also handle this for all text files including XML. Tom

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mutex locking!
by Wesley Khandavalli 05 Sep '08

05 Sep '08

I want to explicitly lock and unlock mutex. Is it possible and what are the methods? -- Wesley K

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Boost Training - Oct/Nov
by Kristin Menefee 04 Sep '08

04 Sep '08

OCI is currently accepting registrations for two upcoming Boost Programming using C++ open enrollment training events. Here are the details: Title: Boost <http://www.ociweb.com/education/services/descrip/escp08-01.html> Programming using C++ Event #1 - October 27-November 19 (M/W eves) - 5:30pm-8:30pm Event #2 - November 10-13 (M-Th) - 9am-4:30pm Location: St. Louis, MO Please contact me for additional information for these open enrollment events or private onsite events. Best regards, Kristin Menefee Education Services Object Computing, Inc. (OCI) 314-579-0066 x203 tel www.ociweb.com/education <http://www.youtube.com/user/OCItv> Check out our new YouTube Channel!

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[xpressive] Using placeholder in semantic actions
by Symons, Greg - SSD 04 Sep '08

04 Sep '08

Hi! I'm trying to use xpressive with semantic actions that use a placeholder, but I can't quite see the right way to do it. Here's my code: namespace grammar { using namespace boost::xpressive; struct ParsedUri { std::string hostname; std::string modelPath; std::string diagramPath; }; static placeholder<ParsedUri> result; static const mark_tag model(1), diagram(2), host(1); static const char pathSep = '/'; static sregex unreserved = set [ alpha | digit | '-' | '.' | '_' | '~' | ' ' | ':' | '$' ]; static sregex pctEncoded = as_xpr('%') >> xdigit >> xdigit; static sregex pathElem = *(unreserved | pctEncoded); static sregex path = pathElem | *(pathElem >> pathSep >> by_ref(path)); static sregex drive = alpha >> ':'; static sregex quad = repeat<1,3>(digit) [ check(as<int>(_) >= 1 && as<int>(_) <= 255) ]; static sregex ipv4 = repeat<3>(quad >> '.') >> quad; static sregex hostname = !(ipv4 | pathElem); static sregex pathNoHost = pathSep >> drive >> pathSep >> path; static sregex pathHost = (host= hostname) >> pathSep >> path [ result.hostname = host ]; static sregex modelPath = pathNoHost | pathHost static sregex uri = "rosert://" >> (model= modelPath) >> '?' >> (diagram= path) [ result.modelPath = model, result.diagramPath = diagram ]; } What happens is that when I compile the code, I get a compile error for the lines accessing the placeholder saying that the various members of the structure are not members of placeholder<T>, which looking at regex_actions.hpp seems to make sense to me. But in the example using placeholder<T> in the docs, it looks like you can use it in the semantic action as if it were a T. Somewhere I'm misunderstanding something, and I don't know what. Can anyone help me here? -- Gregory Symons Software Engineer ITT Space Systems Division greg.symons(a)itt.com (260) 451-6402 This e-mail and any files transmitted with it may be proprietary and are intended solely for the use of the individual or entity to whom they are addressed. If you have received this e-mail in error please notify the sender. Please note that any views or opinions presented in this e-mail are solely those of the author and do not necessarily represent those of ITT Corporation. The recipient should check this e-mail and any attachments for the presence of viruses. ITT accepts no liability for any damage caused by any virus transmitted by this e-mail.

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MS VC++ wchar_t type build Q
by Scott Morgan 04 Sep '08

04 Sep '08

Is there an option to build the Boost libs with or without the wchar_t treated as built in (that whole /Zc:wchar_t mess MS dropped on us) Scott

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Re: [Boost-users] Subsets of boost under version control (Angel Tsankov)
by Rodolfo Federico Gamarra 04 Sep '08

04 Sep '08

Hi Angel. I read your question and tought a little about it. I have some doubts about what exactly you're trying to do. >therefore it would be a good idea not to version control all of boost together with such projects. Do you want to version-control Boost's sources within the Boost client project's repository? Since, for that project which uses Boost, Boost it's an external dependency (and you're not touching Boost's sources) I believe that the general recommendation is not to version control those sources. But, it is sometimes helpful to have in the same repository the dependencies so as to check-put the whole thing easily. What do you mean by repository? The whole one or just particular SVN project within a given repository. You may create independent subsets as different SVN projects, within a same repository. The future additions would be new, independent, projects. Then, each one checks out the project that he/she needs. >Can someone recommend a way to achieve this with subversion's branches-tags-trunk policy? Trying to use tags/branchs/trunk, it seems that the concept of tag is closer to what you may need. In general, a tag is used to take a snapshot of the trunk and give a name to it. But it could be used in more ways. Take a look at this http://svnbook.red-bean.com/nightly/en/svn-book.html#svn.branchmerge.tags.m… With this, you can make-up in your local workspace whatever a subset you desire, and then upload it to the repository with any name you want to use to identify it. I hope you find these comments useful. Rodolfo. -- Rodolfo Federico Gamarra

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How does boost.serialization do with BOM in text/xml files
by Tan, Tom (Shanghai) 04 Sep '08

04 Sep '08

I am think of using boost.serialization to replace CMarkup(http://www.firstobject.com/) as handle my XML config files. By playing with the examples coming with Boost, I found boost.serialization - does not handle BOM of UTF-8 files. - does not ignore <!-- ... > comments. Is there any workaround to this? Thanks.

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[bjam] Presence of Mac OS X 10.6 SDK prevents boost 1.36 build
by Allen Cronce 04 Sep '08

04 Sep '08

Hi all, I have the Mac OS X 10.6 (Snow Leopard) SDK on my dev system. The presence of this SDK prevents boost 1.36 from building: --snip-- ./tools/jam/src/bin.macosxx86/bjam debug release --toolset=darwin -- architecture=combined --layout=system threading=multi address-model=32 link=shared,static macosx-version=10.4 --prefix=../1_36_0_install -- exec-prefix=../1_36_0_install install boost_1_36_0/tools/build/v2/build/feature.jam:466: in feature.validate- value-string from module feature error: "10.6" is not a known value of feature <macosx-version> error: legal values: "10.5" "10.4" "10.3" "10.2" "10.1" "iphone-2.0" "iphone-1.x" "iphonesim-2.0" boost_1_36_0/tools/build/v2/build/property.jam:276: in validate1 from module property boost_1_36_0/tools/build/v2/build/property.jam:301: in validate from module property boost_1_36_0/tools/build/v2/build/property.jam:310: in property.validate-property-sets from module property boost_1_36_0/tools/build/v2/build/toolset.jam:151: in flags from module toolset boost_1_36_0/tools/build/v2/tools/darwin.jam:227: in init-available- sdk-versions from module darwin boost_1_36_0/tools/build/v2/tools/darwin.jam:178: in darwin.init from module darwin boost_1_36_0/tools/build/v2/build/toolset.jam:38: in toolset.using from module toolset boost_1_36_0/tools/build/v2/build-system.jam:434: in process-explicit- toolset-requests from module build-system boost_1_36_0/tools/build/v2/build-system.jam:513: in load from module build-system boost_1_36_0/tools/build/v2/kernel/modules.jam:281: in import from module modules boost_1_36_0/tools/build/v2/kernel/bootstrap.jam:128: in boost-build from module boost_1_36_0/boost-build.jam:16: in module scope from module --snip-- The workaround was for me to hide the SDK, run configure again, then build. I still can't build successfully, due to an unrelated issue. But I'll post that separately in order to try and keep things clear. Snow Leopard will be here before you know it, so at some point the boost build system should be updated to know about 10.6. For that matter, maybe a new SDK would just generate a warning, not a hard error. Best, -- Allen Cronce

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