Re: [Boost-users] boost::iostreams : equivalent of std::getline() in boost

Subject: Re: [Boost-users] boost::iostreams : equivalent of std::getline() in boost
From: vandamme (alain.mari2_at_[hidden])
Date: 2009-02-22 15:04:17

Thanks for your answer.

Still, I have a strange behavior :
When the file doesn't exist, file.is_open() still return true !!!

When I use 'ifstream file' instead of
'boost::iostreams::stream<boost::iostreams::file_source> file',
the test 'if (file)' is always wrong when the file doesn't exist.

Steven Watanabe-4 wrote:
> 
> AMDG
> 
> vandamme wrote:
>> I want to use boost to read a text file like this :
>>
>> boost::iostreams::file_source file(filename.c_str());
>>
>> But, when I want to get each single line with getline(), it doesn't
>> compile
>> :
>>
>> while (std::getline(file, line)) { ...} // COMPILATION ERROR
>>
>> What's the equivalent in boost for std::getline() ?
>>   
> 
> You can use boost::iostreams::stream.
> 
> #include <boost/iostreams/device/file.hpp>
> #include <boost/iostreams/stream.hpp>
> #include <istream>
> 
> int main() {
>     std::string filename("test");
>     boost::iostreams::stream<boost::iostreams::file_source> 
> file(filename.c_str());
>     std::string line;
>     while (std::getline(file, line)) { }
> }
> 
> In Christ,
> Steven Watanabe
> 
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> 
> 

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