ceph/src/boost/libs/format/test/format_test3.cpp

   1 // ------------------------------------------------------------------------------
   2 // format_test3.cpp :  complicated format strings  and / or advanced uses
   3 // ------------------------------------------------------------------------------
   4
   5 //  Copyright Samuel Krempp 2003. Use, modification, and distribution are
   6 //  subject to the Boost Software License, Version 1.0. (See accompanying
   7 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8
   9 // see http://www.boost.org/libs/format for library home page
  10
  11 // ------------------------------------------------------------------------------
  12
  13 #include <boost/detail/lightweight_test.hpp>
  14 #include <boost/format.hpp>
  15 #include <iostream>
  16 #include <iomanip>
  17
  18 struct Rational {
  19   int n,d;
  20   Rational (int an, int ad) : n(an), d(ad) {}
  21 };
  22
  23 std::ostream& operator<<( std::ostream& os, const Rational& r) {
  24   os << r.n << "/" << r.d;
  25   return os;
  26 }
  27
  28 int main(int, char* [])
  29 {
  30     using namespace std;
  31     using boost::format;
  32     using boost::io::group;
  33     using boost::str;
  34
  35     string s, s2;
  36     // special paddings
  37     s = str( format("[%=6s] [%+6s] [%+6s] [% 6s] [%+6s]\n")
  38                       % 123
  39                       % group(internal, setfill('W'), 234)
  40                       % group(internal, setfill('X'), -345)
  41                       % group(setfill('Y'), 456)
  42                       % group(setfill('Z'), -10 ) );
  43
  44     if(s != "[  123 ] [+WW234] [-XX345] [YY 456] [ZZZ-10]\n" ) {
  45       cerr << s ;
  46       BOOST_ERROR("formatting error. (with special paddings)");
  47     }
  48
  49     s = str( format("[% 6.8s] [% 8.6s] [% 7.7s]\n")
  50                       % group(internal, setfill('x'), Rational(12345,54321))
  51                       % group(internal, setfill('x'), Rational(123,45))
  52                       % group(internal, setfill('x'), Rational(123,321))
  53              );
  54     if(s != (s2="[ 12345/5] [ xx123/4] [ 123/32]\n" )) {
  55         cerr << s << s2;
  56       BOOST_ERROR("formatting error. (with special paddings)");
  57     }
  58
  59     s = str( format("[% 6.8s] [% 6.8s] [% 6.8s] [% 6.8s] [%6.8s]\n")
  60                       % 1234567897
  61                       % group(setfill('x'), 12)
  62                       % group(internal, setfill('x'), 12)
  63                       % group(internal, setfill('x'), 1234567890)
  64                       % group(internal, setfill('x'), 123456)
  65              );
  66     if(s != (s2="[ 1234567] [xxx 12] [ xxx12] [ 1234567] [123456]\n") ) {
  67         cerr << s << s2;
  68       BOOST_ERROR("formatting error. (with special paddings)");
  69     }
  70
  71     s = str( format("[% 8.6s] [% 6.4s] [% 6.4s] [% 8.6s] [% 8.6s]\n")
  72                       % 1234567897
  73                       % group(setfill('x'), 12)
  74                       % group(internal, setfill('x'), 12)
  75                       % group(internal, setfill('x'), 1234567890)
  76                       % group(internal, setfill('x'), 12345)
  77              );
  78     if(s != (s2="[   12345] [xxx 12] [ xxx12] [ xx12345] [ xx12345]\n") ) {
  79         cerr << s << s2;
  80       BOOST_ERROR("formatting error. (with special paddings)");
  81     }
  82
  83     // nesting formats :
  84     s = str( format("%2$014x [%1%] %|2$05|\n") % (format("%05s / %s") % -18 % 7)
  85              %group(showbase, -100)
  86              );
  87     if( s != "0x0000ffffff9c [-0018 / 7] -0100\n" ){
  88       cerr << s ;
  89       BOOST_ERROR("nesting did not work");
  90     }
  91
  92     // bind args, and various arguments counts :
  93     {
  94         boost::format bf("%1% %4% %1%");
  95         bf.bind_arg(1, "one") % 2 % "three" ;
  96         BOOST_TEST_EQ(bf.expected_args(), 4);
  97         BOOST_TEST_EQ(bf.fed_args(), 2);
  98         BOOST_TEST_EQ(bf.bound_args(), 1);
  99         BOOST_TEST_EQ(bf.remaining_args(), 1);
 100         BOOST_TEST_EQ(bf.cur_arg(), 4);
 101         bf.clear_binds();
 102         bf % "one" % 2 % "three" ;
 103         BOOST_TEST_EQ(bf.expected_args(), 4);
 104         BOOST_TEST_EQ(bf.fed_args(), 3);
 105         BOOST_TEST_EQ(bf.bound_args(), 0);
 106         BOOST_TEST_EQ(bf.remaining_args(), 1);
 107         BOOST_TEST_EQ(bf.cur_arg(), 4);
 108     }
 109     // testcase for bug reported at
 110     // http://lists.boost.org/boost-users/2006/05/19723.php
 111     {
 112         format f("%40t%1%");
 113         int x = 0;
 114         f.bind_arg(1, x);
 115         f.clear();
 116     }
 117
 118     // testcase for bug reported at
 119     // http://lists.boost.org/boost-users/2005/11/15454.php
 120     std::string l_param;
 121     std::string l_str = (boost::format("here is an empty string: %1%") % l_param).str();
 122     BOOST_TEST_EQ(std::string("here is an empty string: "), l_str);
 123
 124     // testcase for SourceForge bug #1506914
 125     std::string arg; // empty string
 126     s = str(format("%=8s") % arg);
 127     BOOST_TEST_EQ(std::string("        "), s);
 128
 129     return boost::report_errors();
 130 }