1 /*
2 *
3 * Copyright (c) 2003
4 * John Maddock
5 *
6 * Use, modification and distribution are subject to the
7 * Boost Software License, Version 1.0. (See accompanying file
8 * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9 *
10 */
11
12 /*
13 * LOCATION: see http://www.boost.org for most recent version.
14 * FILE regex_token_iterator_example_1.cpp
15 * VERSION see <boost/version.hpp>
16 * DESCRIPTION: regex_token_iterator example: split a string into tokens.
17 */
18
19
20 #include <boost/regex.hpp>
21
22 #include <iostream>
23 using namespace std;
24
25
26 #if defined(BOOST_MSVC) || (defined(BOOST_BORLANDC) && (BOOST_BORLANDC == 0x550))
27 //
28 // problem with std::getline under MSVC6sp3
getline(istream & is,std::string & s)29 istream& getline(istream& is, std::string& s)
30 {
31 s.erase();
32 char c = static_cast<char>(is.get());
33 while(c != '\n')
34 {
35 s.append(1, c);
36 c = static_cast<char>(is.get());
37 }
38 return is;
39 }
40 #endif
41
42
main(int argc,const char * [])43 int main(int argc, const char*[])
44 {
45 string s;
46 do{
47 if(argc == 1)
48 {
49 cout << "Enter text to split (or \"quit\" to exit): ";
50 getline(cin, s);
51 if(s == "quit") break;
52 }
53 else
54 s = "This is a string of tokens";
55
56 boost::regex re("\\s+");
57 boost::sregex_token_iterator i(s.begin(), s.end(), re, -1);
58 boost::sregex_token_iterator j;
59
60 unsigned count = 0;
61 while(i != j)
62 {
63 cout << *i++ << endl;
64 count++;
65 }
66 cout << "There were " << count << " tokens found." << endl;
67
68 }while(argc == 1);
69 return 0;
70 }
71
72
73