| <!-- |
| 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>strstream</TITLE> |
| <LINK REL=StyleSheet HREF="../rw.css" TYPE="text/css" TITLE="Apache stdcxx Stylesheet"></HEAD> |
| <BODY BGCOLOR=#FFFFFF> |
| <A HREF="strstream-h.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="strstreambuf.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>strstream</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> |
| <B><I>strstream</I></B> <IMG SRC="images/inherits.gif"> <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> <IMG SRC="images/inherits.gif"> <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> <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">Constructors</A></LI> |
| <LI><A HREF="#sec8">Destructors</A></LI> |
| <LI><A HREF="#sec9">Member Functions</A></LI> |
| <LI><A HREF="#sec10">Example</A></LI> |
| <LI><A HREF="#sec11">See Also</A></LI> |
| <LI><A HREF="#sec12">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="#idx1194">char_type</A><BR> |
| <A HREF="#idx1202">freeze()</A><BR> |
| <A HREF="#idx1195">int_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1196">off_type</A><BR> |
| <A HREF="#idx1203">pcount()</A><BR> |
| <A HREF="#idx1197">pos_type</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1204">rdbuf()</A><BR> |
| <A HREF="#idx1205">str()</A><BR> |
| <A HREF="#idx1199">strstream()</A><BR> |
| </TD> |
| <TD VALIGN=top><A HREF="#idx1198">traits_type</A><BR> |
| <A HREF="#idx1201">~strstream()</A><BR> |
| </TD></TR> |
| </TABLE></UL> |
| |
| <A NAME="sec2"><H3>Summary</H3></A> |
| <P>Class that reads and writes to an array in memory</P> |
| <A NAME="sec3"><H3>Synopsis</H3></A> |
| |
| <PRE>#include <strstream> |
| |
| namespace std { |
| class strstream; |
| } |
| </PRE> |
| <A NAME="sec4"><H3>Description</H3></A> |
| <P>The class <B><I>strstream</I></B> reads and writes to an array in memory. It uses a private <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object to control the associated array. 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> |
| <BLOCKQUOTE><HR><B> |
| NOTE -- This is a deprecated feature and might not be available in future versions. |
| </B><HR></BLOCKQUOTE> |
| <A NAME="sec5"><H3>Interface</H3></A> |
| |
| <UL><PRE>namespace std { |
| |
| class strstream |
| : public basic_iostream<char> { |
| |
| public: |
| |
| typedef char char_type; |
| typedef char_traits<char_type> traits_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; |
| |
| strstream(); |
| strstream(char *s, int n, |
| ios_base::openmode = |
| ios_base::out | ios_base::in); |
| |
| void freeze(int freezefl = 1); |
| int pcount() const; |
| |
| virtual ~strstream(); |
| strstreambuf *rdbuf() const; |
| |
| char *str(); |
| |
| }; |
| } |
| </PRE></UL> |
| <A NAME="sec6"><H3>Member Types</H3></A> |
| |
| <A NAME="idx1194"></A><PRE><B>char_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>char_type</SAMP> is a synonym of type <SAMP>char</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1195"></A><PRE><B>int_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>int_type</SAMP> is a synonym of type<SAMP> traits_type::in_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1196"></A><PRE><B>off_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>off_type</SAMP> is a synonym of type <SAMP>traits_type::off_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1197"></A><PRE><B>pos_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>pos_type</SAMP> is a synonym of type <SAMP>traits_type::pos_type</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1198"></A><PRE><B>traits_type</B></PRE> |
| <UL> |
| <P>The type <SAMP>traits_type</SAMP> is a synonym of type <SAMP>char_traits<char></SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec7"><H3>Constructors</H3></A> |
| |
| <A NAME="idx1199"></A><PRE><B>strstream</B>();</PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>strstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object. The <B><I>strstreambuf</I></B> object is initialized by calling its default constructor <SAMP>strstreambuf()</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1200"></A><PRE><B>strstream</B>(char* s, int n, ios_base::openmode |
| mode = ios_base::out | ios_base::in); </PRE> |
| <UL> |
| <P>Constructs an object of class <B><I>strstream</I></B>, initializing the base class <B><I><A HREF="basic-iostream.html">basic_iostream</A></I></B> with the associated <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object. The <B><I>strstreambuf</I></B> object is initialized by calling one of two constructors:</P> |
| <UL> |
| <LI><P CLASS="LIST">If <SAMP>mode & app == 0</SAMP>, calls <SAMP>strstreambuf(s,n,s)</SAMP></P></LI> |
| <LI><P CLASS="LIST">Otherwise calls <SAMP>strstreambuf(s,n,s + ::strlen(s))</SAMP></P></LI> |
| </UL> |
| </UL> |
| |
| <A NAME="sec8"><H3>Destructors</H3></A> |
| |
| <A NAME="idx1201"></A><PRE>virtual <B>~strstream</B>();</PRE> |
| <UL> |
| <P>Destroys an object of class <B><I>strstream</I></B>. </P> |
| </UL> |
| |
| <A NAME="sec9"><H3>Member Functions</H3></A> |
| |
| <A NAME="idx1202"></A><PRE>void |
| <B>freeze</B>(bool freezefl = true); </PRE> |
| <UL> |
| <P>Calls <SAMP>rdbuf()->freeze(freezefl)</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1203"></A><PRE>int |
| <B>pcount</B>() const; </PRE> |
| <UL> |
| <P>Returns <SAMP>rdbuf()->pcount()</SAMP>.</P> |
| </UL> |
| |
| |
| <A NAME="idx1204"></A><PRE>strstreambuf* |
| <B>rdbuf</B>() const; </PRE> |
| <UL> |
| <P>Returns a pointer to the <B><I><A HREF="strstreambuf.html">strstreambuf</A></I></B> object associated with the stream.</P> |
| </UL> |
| |
| |
| <A NAME="idx1205"></A><PRE>char* |
| <B>str</B>();</PRE> |
| <UL> |
| <P>Returns <SAMP>rdbuf()->str()</SAMP>.</P> |
| </UL> |
| |
| <A NAME="sec10"><H3>Example</H3></A> |
| |
| <UL><PRE>// |
| // strstream.cpp |
| // |
| |
| #include <iostream> // for cout, endl |
| #include <strstream> // for sstream |
| |
| |
| int main () |
| { |
| // create a bi-directional strstream object |
| std::strstream 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; |
| |
| char line [80]; |
| |
| // extract the first line |
| inout.getline (line, sizeof line); |
| |
| // output the first line to stdout |
| std::cout << "\nDeutsch:\n" << line; |
| |
| // extract the second line |
| inout.getline (line, sizeof line); |
| |
| // output the second line to stdout |
| std::cout << "\nFrançais:\n" << line; |
| |
| // extract the third line |
| inout.getline (line, sizeof line); |
| |
| // output the third line to stdout |
| std::cout << "\nEnglish:\n" << line << std::endl; |
| |
| // output the contents of the stream object to stdout |
| std::cout << std::endl << inout.str () << std::endl; |
| |
| return 0; |
| } |
| |
| |
| Program Output: |
| </PRE></UL> |
| <UL><PRE> |
| Deutsch: |
| Dieses ist die Geschichte eines Mannes. |
| Francais: |
| 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="sec11"><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="strstreambuf.html">strstreambuf</A></I></B>, <B><I><A HREF="istrstream.html">istrstream</A></I></B>, <B><I><A HREF="ostrstream.html">ostrstream</A></I></B></P> |
| <A NAME="sec12"><H3>Standards Conformance</H3></A> |
| <P><I>Deprecated. See ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, </I>Annex D Compatibility features Section D.7.4</P> |
| |
| <BR> |
| <HR> |
| <A HREF="strstream-h.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="strstreambuf.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> |