boost_1_45_0/libs/algorithm/string/example/find_example.cpp

//  Boost string_algo library example file  ---------------------------------//

//  Copyright Pavol Droba 2002-2003. Use, modification and
//  distribution is subject to the Boost Software License, Version
//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org for updates, documentation, and revision history.

#include <string>
#include <iostream>
#include <algorithm>
#include <functional>
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/algorithm/string/find.hpp>

using namespace std;
using namespace boost;

int main()
{  
    cout << "* Find Example *" << endl << endl;

    string str1("abc___cde___efg");
    string str2("abc");

    // find "cde" substring
    iterator_range<string::iterator> range=find_first( str1, string("cde") );

    // convert a substring to upper case 
    // note that iterator range can be directly passed to the algorithm
    to_upper( range );

    cout << "str1 with upper-cased part matching cde: " << str1 << endl;

    // get a head of the string
    iterator_range<string::iterator> head=find_head( str1, 3 );
    cout << "head(3) of the str1: " << string( head.begin(), head.end() ) << endl;

    // get the tail
    head=find_tail( str2, 5 );
    cout << "tail(5) of the str2: " << string( head.begin(), head.end() ) << endl;

    // char processing
    char text[]="hello dolly!";
    iterator_range<char*> crange=find_last(text,"ll");

    // transform the range ( add 1 )
    transform( crange.begin(), crange.end(), crange.begin(), bind2nd( plus<char>(), 1 ) );
    // uppercase the range
    to_upper( crange );

    cout << text << endl;

    cout << endl;

    return 0;
}