Re: [Boost-users] [boost.regex]Does boost:u32regex recognize theunicode named blocks like "\p{IsBasicLatin}"?

From: gj_uestc (gj_uestc_at_[hidden])
Date: 2008-08-10 23:34:34

 Thanks John,
     I have used "[\x0-\x7f]" instead of "/p{IsBasicLatin}" to construct the regular expression (expression=boost::make_u32regex("[\\x0-\\x7f]" )). The regular expression has been  constructed correctly but it cannot accecpt instance string either "a" or "	" (boost:u32match("a",expression)==false).I am wondering whether it has something to do with unicode? I have tried expression=boost::regex("[\\x0-\\x7f]" )); then I can pass the string "a" but not string "	"(boost:match("a",expression)==true), which I think is reaonable for boost:regex since it does not support the unicode. So my point is: why the boost:u32match doesn't work well?
 
Thanks&regards
Juan
 
 
 

ÔÚ2008-08-08 16:48:38£¬"John Maddock" <john_at_[hidden]> дµÀ£º
>John Maddock wrote:
>>> gj_uestc wrote:
>>>>> Hi,all
>>>>>    Nowadays I am using boost:u32regex to do some regular expression
>>>>> processing.But it seems that "/p{IsBasicLatin}"is not a accessable
>>>>> expression by boost::make_u32regex(tmp).Does boost:regex not suppor
>>>>> the named unicode blocks or I have to pass some other flags to the
>>>>> library? Now I was using the defult flag wich indicate using perl
>>>>> syntactic.
>>>
>>> The named properties/character classes supported are here:
>>> http://www.boost.org/doc/libs/1_35_0/libs/regex/doc/html/boost_regex/syntax/character_classes/optional_char_class_names.html
>>>
>>> As you can see I haven't added support for language-specific blocks
>>> yet :-(
>
>I forgot to mention that \p{IsBasicLatin} is the same as: [\x0-\x7f], 
>likewise the other continuous blocks can be expressed in the same way.
>
>HTH, John. 
>