1 /************************************************************************* 2 * 3 * The Contents of this file are made available subject to the terms of 4 * the BSD license. 5 * 6 * Copyright 2000, 2010 Oracle and/or its affiliates. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of Sun Microsystems, Inc. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 28 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 30 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 31 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 *************************************************************************/ 34 35 #include <stdio.h> 36 37 #include <sal/main.h> 38 39 #include <rtl/ustrbuf.hxx> 40 #include <rtl/string.hxx> 41 42 using rtl::OUString; 43 using rtl::OUStringBuffer; 44 using rtl::OString; 45 46 SAL_IMPLEMENT_MAIN() 47 { 48 // string concatination 49 50 sal_Int32 n = 42; 51 double pi = 3.14159; 52 53 // give it an initial size, should be a good guess. 54 // stringbuffer extends if necessary 55 OUStringBuffer buf( 128 ); 56 57 // append an ascii string 58 buf.appendAscii( "pi ( here " ); 59 60 // numbers can be simply appended 61 buf.append( pi ); 62 63 // lets the compiler count the stringlength, so this is more efficient than 64 // the above appendAscii call, where length of the string must be calculated at 65 // runtime 66 buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(" ) multiplied with " ) ); 67 buf.append( n ); 68 buf.appendAscii( RTL_CONSTASCII_STRINGPARAM(" gives ") ); 69 buf.append( (double)( n * pi ) ); 70 buf.appendAscii( RTL_CONSTASCII_STRINGPARAM( "." ) ); 71 72 // now transfer the buffer into the string. 73 // afterwards buffer is empty and may be reused again ! 74 OUString string = buf.makeStringAndClear(); 75 76 // I could of course also used the OStringBuffer directly 77 OString oString = rtl::OUStringToOString( string , RTL_TEXTENCODING_ASCII_US ); 78 79 // just to print something 80 printf( "%s\n" ,oString.getStr() ); 81 82 return 0; 83 } 84 85