C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  help(about buffer)          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message berkay Guest Posted: Sat Oct 29, 2005 7:19 pm    Post subject: help(about buffer) i have a string s1 and if i want to make such a thing strstreambuf bbuf(char*,int); it only accepts a pointer and i have a string how can i do this i ll be happy if u can help me Back to top John Harrison Guest Posted: Sat Oct 29, 2005 7:43 pm    Post subject: Re: help(about buffer) berkay wrote: Quote: i have a string s1 and if i want to make such a thing strstreambuf bbuf(char*,int); it only accepts a pointer and i have a string how can i do this i ll be happy if u can help me Why on earth do you want to make a strstreambuf? It's a really unusual type of object to want to make, normally it is only made behind the scenes by other classes. Anyway the bad news it that you can't make a strstreambuf from a string, only from a char pointer. I expect that what you really want to make is a istringstream, like this string str = ...; istringstream buf(str); Perhaps you should explain what you are trying to do instead of what you think you want and I could help better. john Back to top Jim Langston Guest Posted: Sat Oct 29, 2005 7:47 pm    Post subject: Re: help(about buffer) "berkay" <berkay.beygo (AT) gmail (DOT) com> wrote Quote: i have a string s1 and if i want to make such a thing strstreambuf bbuf(char*,int); it only accepts a pointer and i have a string how can i do this i ll be happy if u can help me If the bbuf doesn't change the string, you can pass sl.c_str() but this is a const pointer. So you would have to const_cast it const_cast<char*>( sl.c_str() ) BUT, make 10000% sure that bbuf does NOT change the data. Now, if it does it is possible to pass sl.data() which is not const, it can be changed, but it is a fixed length buffer, make sure your bbuf doesnt' try to write past the end of it. Back to top TIT Guest Posted: Sat Oct 29, 2005 7:48 pm    Post subject: Re: help(about buffer) berkay sade: Quote: i have a string s1 and if i want to make such a thing strstreambuf bbuf(char*,int); it only accepts a pointer and i have a string how can i do this i ll be happy if u can help me Why use the deprecated strstream and not the newer stringstreams (<sstream>)? basic_stringbuf<char> buf(s1); or even more convenient: std::istringstream istrm(s); std::ostringstream ostrm(s); but to answer your question: std::strstreambuf bbuf(s1.c_str(),s1.size()); TIT Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.