ceph/src/boost/libs/algorithm/string/example/predicate_example.cpp

   1 //  Boost string_algo library example file  ---------------------------------//
   2
   3 //  Copyright Pavol Droba 2002-2003. Use, modification and
   4 //  distribution is subject to the Boost Software License, Version
   5 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 //  http://www.boost.org/LICENSE_1_0.txt)
   7
   8 //  See http://www.boost.org for updates, documentation, and revision history.
   9
  10 #include <string>
  11 #include <iostream>
  12 #include <functional>
  13 #include <boost/algorithm/string/predicate.hpp>
  14 #include <boost/algorithm/string/classification.hpp>
  15
  16 using namespace std;
  17 using namespace boost;
  18
  19 int main()
  20 {
  21     cout << "* Predicate Example *" << endl << endl;
  22
  23     string str1("123xxx321");
  24     string str2("abc");
  25
  26     // Check if str1 starts with '123'
  27     cout << "str1 starts with \"123\": " <<
  28         (starts_with( str1, string("123") )?"true":"false") << endl;
  29
  30     // Check if str1 ends with '123'
  31     cout << "str1 ends with \"123\": " <<
  32         (ends_with( str1, string("123") )?"true":"false") << endl;
  33
  34     // Check if str1 contains 'xxx'
  35     cout << "str1 contains \"xxx\": " <<
  36         (contains( str1, string("xxx") )?"true":"false") << endl;
  37
  38
  39     // Check if str2 equals to 'abc'
  40     cout << "str2 equals \"abc\": " <<
  41         (equals( str2, string("abc") )?"true":"false") << endl;
  42
  43
  44     // Classification functors and all predicate
  45     if ( all(";.,", is_punct() ) )
  46     {
  47         cout << "\";.,\" are all punctuation characters" << endl;
  48     }
  49
  50     // Classification predicates can be combined
  51     if ( all("abcxxx", is_any_of("xabc") && !is_space() ) )
  52     {
  53         cout << "true" << endl;
  54     }
  55
  56     cout << endl;
  57
  58     return 0;
  59 }