| <!-- |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright |
| ownership. The ASF licenses this file to you under the Apache |
| License, Version 2.0 (the License); you may not use this file |
| except in compliance with the License. You may obtain a copy of |
| the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
| |
| Copyright 1999-2007 Rogue Wave Software, Inc. |
| --> |
| |
| <HTML> |
| <HEAD> |
| <TITLE>basic_stringstream</TITLE> |
| <LINK REL=StyleSheet HREF="../rw.css" TYPE="text/css" TITLE="Apache stdcxx Stylesheet"></HEAD> |
| <BODY BGCOLOR=#FFFFFF> |
| <A HREF="basic-stringbuf.html"><IMG SRC="images/bprev.gif" WIDTH=20 HEIGHT=21 ALT="Previous file" BORDER=O></A><A HREF="noframes.html"><IMG SRC="images/btop.gif" WIDTH=56 HEIGHT=21 ALT="Top of Document" BORDER=O></A><A HREF="booktoc.html"><IMG SRC="images/btoc.gif" WIDTH=56 HEIGHT=21 ALT="Contents" BORDER=O></A><A HREF="tindex.html"><IMG SRC="images/bindex.gif" WIDTH=56 HEIGHT=21 ALT="Index page" BORDER=O></A><A HREF="bidirectionaliterators.html"><IMG SRC="images/bnext.gif" WIDTH=25 HEIGHT=21 ALT="Next file" BORDER=O></A><DIV CLASS="DOCUMENTNAME"><B>Apache C++ Standard Library Reference Guide</B></DIV> |
| <H2>basic_stringstream</H2> |
| <P><B>Library:</B> <A HREF="2-11.html">Input/output</A></P> |
| |
| <PRE><HR> <IMG SRC="images/inherits.gif"><B><I><A HREF="basic-ostream.html">basic_ostream</A></I></B><IMG SRC="images/inherits.gif"> |
| <B><I>basic_stringstream</I></B><IMG SRC="images/inherits.gif"><B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> <B><I><A HREF="basic-ios.html">basic_ios</A></I></B><IMG SRC="images/inherits.gif"><B><I><A HREF="ios-base.html">ios_base</A></I></B> |
| <IMG SRC="images/inherits.gif"><B><I><A HREF="basic-istream.html">basic_istream</A></I></B><IMG SRC="images/inherits.gif"><HR></PRE> |
| <UL> |
| <LI><A HREF="#sec1">Local Index</A></LI> |
| <LI><A HREF="#sec2">Summary</A></LI> |
| <LI><A HREF="#sec3">Synopsis</A></LI> |
| <LI><A HREF="#sec4">Description</A></LI> |
| <LI><A HREF="#sec5">Interface</A></LI> |
| <LI><A HREF="#sec6">Member Types</A></LI> |
| <LI><A HREF="#sec7">Nonmember Types</A></LI> |
| <LI><A HREF="#sec8">Constructors</A></LI> |
| <LI><A HREF="#sec9">Destructor</A></LI> |
| <LI><A HREF="#sec10">Member Functions</A></LI> |
| <LI><A HREF="#sec11">Example</A></LI> |
| <LI><A HREF="#sec12">See Also</A></LI> |
| <LI><A HREF="#sec13">Standards Conformance</A></LI> |
| </UL> |
| <A NAME="sec1"><H3>Local Index</H3></A> |
| <H4>Members</H4> |
| <UL><TABLE CELLPADDING=3> |
| <TR><TD VALIGN=top> |
| <A HREF="#idx409">allocator_type</A><BR> |
| <A HREF="#idx418">basic_stringstream()</A><BR> |
| <A HREF="#idx410">char_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx411">int_type</A><BR> |
| <A HREF="#idx412">off_type</A><BR> |
| <A HREF="#idx413">pos_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx421">rdbuf()</A><BR> |
| <A HREF="#idx422">str()</A><BR> |
| <A HREF="#idx414">string_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx415">traits_type</A><BR> |
| <A HREF="#idx420">~basic_stringstream()</A><BR> |
| </TD></TR> |
| </TABLE></UL> |
| <H4>Non-Members</H4> |
| <UL><TABLE CELLPADDING=3> |
| <TR><TD VALIGN=top> |
| <A HREF="#idx416">stringstream</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx417">wstringstream</A><BR> |
| </TD> |
| <TD VALIGN=top></TD></TR> |
| </TABLE></UL> |
| |
| <A NAME="sec2"><H3>Summary</H3></A> |
| <P>Class that supports writing and reading objects of specializations of the class template <B><I><A HREF="basic-string.html">basic_string</A></I></B> to and from an array in memory</P> |
| <A NAME="sec3"><H3>Synopsis</H3></A> |
| |
| <PRE>#include <sstream> |
| |
| namespace std { |
| template<class charT, class traits = char_traits<charT>, |
| class Allocator = allocator<charT> > |
| class basic_stringstream; |
| } |
| </PRE> |
| <A NAME="sec4"><H3>Description</H3></A> |
| <P>The class template <B><I>basic_stringstream</I></B> reads and writes to an array in memory. It supports writing and reading objects of class <B><I><A HREF="basic-string.html">basic_string</A></I></B>, and uses a <B><I><A HREF="basic-stringbuf.html">basic_stringbuf</A></I></B> object to control the associated storage. It inherits from <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> and therefore can use all the formatted and unformatted output and input functions.</P> |
| <A NAME="sec5"><H3>Interface</H3></A> |
| |
| <UL><PRE>namespace std { |
| |
| template<class charT, class traits = char_traits<charT>, |
| class Allocator = allocator<charT> > |
| class basic_stringstream |
| : public basic_iostream<charT, traits> { |
| public: |
| typedef traits traits_type; |
| typedef charT char_type; |
| typedef Allocator allocator_type; |
| typedef typename traits_type::int_type int_type; |
| typedef typename traits_type::pos_type pos_type; |
| typedef typename traits_type::off_type off_type; |
| |
| explicit |
| basic_stringstream(ios_base::openmode = |
| ios_base::out | ios_base::in); |
| |
| explicit |
| basic_stringstream(const basic_string<char_type, |
| traits_type, allocator_type>&, |
| ios_base::openmode = |
| ios_base::out | ios_base::in); |
| |
| virtual ~basic_stringstream(); |
| |
| basic_stringbuf<char_type, traits_type, allocator_type> * |
| rdbuf() const; |
| basic_string<char_type, traits_type, allocator_type> |
| str() const; |
| void |
| str(const basic_string<char_type, traits_type, allocator_type>&); |
| }; |
| } |
| </PRE></UL> |
| <A NAME="sec6"><H3>Member Types</H3></A> |
| |
| <A NAME="idx409"></A><PRE><B>allocator_type </B></PRE> |
| <UL> |
| <P>The type <SAMP>allocator_type</SAMP> is a synonym for the template parameter <SAMP>Allocator</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx410"></A><PRE><B>char_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>char_type</SAMP> is a synonym for the template parameter <SAMP>charT</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx411"></A><PRE><B>int_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>int_type</SAMP> is a synonym of type <SAMP>traits::in_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx412"></A><PRE><B>off_type</B></PRE> |
| <UL> |
| <P>The type<SAMP> off_type</SAMP> is a synonym of type<SAMP> traits::off_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx413"></A><PRE><B>pos_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>pos_type</SAMP> is a synonym of type <SAMP>traits::pos_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx414"></A><PRE><B>string_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>string_type</SAMP> is an instantiation of class <B><I><A HREF="basic-string.html">basic_string</A></I></B> on type <SAMP>charT</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx415"></A><PRE><B>traits_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>traits_type</SAMP> is a synonym for the template parameter <SAMP>traits</SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec7"><H3>Nonmember Types</H3></A> |
| |
| <A NAME="idx416"></A><PRE><B>stringstream</B></PRE> |
| <UL> |
| <P>The type <SAMP>stringstream</SAMP> is a specialization of class template <B><I>basic_stringstream</I></B> on type <SAMP>char</SAMP>:</P> |
| <P><SAMP>typedef basic_stringstream<char> stringstream;</SAMP></P> |
| </UL> |
| |
| |
| <A NAME="idx417"></A><PRE><B>wstringstream</B></PRE> |
| <UL> |
| <P>The type <SAMP>wstringstream</SAMP> is a specialization of class template <B><I>basic_stringstream</I></B> on type <SAMP>wchar_t:</SAMP></P> |
| <P><SAMP>typedef basic_stringstream<wchar_t> wstringstream;</SAMP></P> |
| </UL> |
| |
| <A NAME="sec8"><H3>Constructors</H3></A> |
| |
| <A NAME="idx418"></A><PRE>explicit <B>basic_stringstream</B>(ios_base::openmode which = |
| ios_base::in | ios_base::out); </PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>basic_stringstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated string buffer. This string buffer is initialized by calling the <B><I><A HREF="basic-stringbuf.html">basic_stringbuf</A></I></B> constructor <SAMP>basic_stringbuf<charT,traits,Allocator>(which)</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx419"></A><PRE>explicit <B>basic_stringstream</B>(const basic_string<char_type, |
| traits_type, allocator_type>& str, |
| ios_base::openmode which = |
| ios_base::in | ios_base::out); </PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>basic_stringstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated string buffer. The string buffer is initialized by calling the <B><I><A HREF="basic-stringbuf.html">basic_stringbuf</A></I></B> constructor <SAMP>basic_stringbuf<char_type, traits_type, allocator_type>(str,which)</SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec9"><H3>Destructor</H3></A> |
| |
| <A NAME="idx420"></A><PRE>virtual <B>~basic_stringstream</B>();</PRE> |
| <UL> |
| <P>Destroys an object of class <B><I>basic_stringstream</I></B>.</P> |
| </UL> |
| |
| <A NAME="sec10"><H3>Member Functions</H3></A> |
| |
| <A NAME="idx421"></A><PRE>basic_stringbuf<char_type, traits_type, allocator_type>* |
| <B>rdbuf</B>() const; </PRE> |
| <UL> |
| <P>Returns a pointer to the <B><I><A HREF="basic-stringbuf.html">basic_stringbuf</A></I></B> associated with the stream.</P> |
| </UL> |
| |
| |
| <A NAME="idx422"></A><PRE>basic_string<char_type, traits_type, allocator_type> |
| <B>str</B>() const; </PRE> |
| <UL> |
| <P>Returns <SAMP>rdbuf()->str()</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx423"></A><PRE>void |
| <B>str</B>(const basic_string<char_type, traits_type, |
| allocator_type>& str); </PRE> |
| <UL> |
| <P>Calls <SAMP>rdbuf()->str(str)</SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec11"><H3>Example</H3></A> |
| |
| <UL><PRE>// |
| // stringstream.cpp |
| // |
| |
| #include <iostream> // for wcout, endl |
| #include <sstream> // for wstringstream |
| |
| |
| |
| int main () |
| { |
| // create a bi-directional wstringstream object |
| std::wstringstream inout; |
| |
| // write out three lines to the stream |
| inout << "Dieses ist die Geschichte eines Mannes.\n" |
| << "C'est l'histoire d'un homme.\n" |
| << "This is the story of a man." << std::endl; |
| |
| std::wstring line; |
| |
| // extract the first line |
| std::getline (inout, line); |
| |
| // output the first line to stdout |
| std::wcout << "\nDeutsch:\n" << line; |
| |
| // extract the second line |
| std::getline (inout, line); |
| |
| // output the second line to stdout |
| std::wcout << "\nFrançais:\n" << line; |
| |
| // extract the third line |
| std::getline (inout, line); |
| |
| // output the third line to stdout |
| std::wcout << "\nEnglish:\n" << line << std::endl; |
| |
| // output the contents of the stream object to stdout |
| std::wcout << std::endl << inout.str() << std::endl; |
| |
| return 0; |
| } |
| |
| |
| Program Output: |
| </PRE></UL> |
| <UL><PRE></PRE></UL> |
| |
| <UL><PRE>Deutsch: |
| Dieses ist die Geschichte eines Mannes. |
| Français: |
| C'est l'histoire d'un homme. |
| English: |
| This is the story of a man. |
| |
| Dieses ist die Geschichte eines Mannes. |
| C'est l'histoire d'un homme. |
| This is the story of a man. |
| </PRE></UL> |
| <A NAME="sec12"><H3>See Also</H3></A> |
| <P><B><I><A HREF="char-traits.html">char_traits</A></I></B>, <B><I><A HREF="ios-base.html">ios_base</A></I></B>, <B><I><A HREF="basic-ios.html">basic_ios</A></I></B>, <B><I><A HREF="basic-stringbuf.html">basic_stringbuf</A></I></B>, <B><I><A HREF="basic-string.html">basic_string</A></I></B>, <B><I><A HREF="basic-istringstream.html">basic_istringstream</A></I></B>, <B><I><A HREF="basic-ostringstream.html">basic_ostringstream</A></I></B></P> |
| <A NAME="sec13"><H3>Standards Conformance</H3></A> |
| <P><I>ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, Section 27.7.4</I></P> |
| |
| <BR> |
| <HR> |
| <A HREF="basic-stringbuf.html"><IMG SRC="images/bprev.gif" WIDTH=20 HEIGHT=21 ALT="Previous file" BORDER=O></A><A HREF="noframes.html"><IMG SRC="images/btop.gif" WIDTH=56 HEIGHT=21 ALT="Top of Document" BORDER=O></A><A HREF="booktoc.html"><IMG SRC="images/btoc.gif" WIDTH=56 HEIGHT=21 ALT="Contents" BORDER=O></A><A HREF="tindex.html"><IMG SRC="images/bindex.gif" WIDTH=56 HEIGHT=21 ALT="Index page" BORDER=O></A><A HREF="bidirectionaliterators.html"><IMG SRC="images/bnext.gif" WIDTH=20 HEIGHT=21 ALT="Next file" BORDER=O></A> |
| |
| <!-- Google Analytics tracking code --> |
| <script src="http://www.google-analytics.com/urchin.js" type="text/javascript"> |
| </script> |
| <script type="text/javascript"> |
| _uacct = "UA-1775151-1"; |
| urchinTracker(); |
| </script> |
| <!-- end of Google Analytics tracking code --> |
| |
| </BODY> |
| </HTML> |