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// ------------------------------------------------------------------------------
// format_test3.cpp : complicated format strings and / or advanced uses
// ------------------------------------------------------------------------------
// Copyright Samuel Krempp 2003. Use, modification, and distribution are
// 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/libs/format for library home page
// ------------------------------------------------------------------------------
#include <boost/detail/lightweight_test.hpp>
#include <boost/format.hpp>
#include <iostream>
#include <iomanip>
struct Rational {
int n,d;
Rational (int an, int ad) : n(an), d(ad) {}
};
std::ostream& operator<<( std::ostream& os, const Rational& r) {
os << r.n << "/" << r.d;
return os;
}
int main(int, char* [])
{
using namespace std;
using boost::format;
using boost::io::group;
using boost::str;
string s, s2;
// special paddings
s = str( format("[%=6s] [%+6s] [%+6s] [% 6s] [%+6s]\n")
% 123
% group(internal, setfill('W'), 234)
% group(internal, setfill('X'), -345)
% group(setfill('Y'), 456)
% group(setfill('Z'), -10 ) );
if(s != "[ 123 ] [+WW234] [-XX345] [YY 456] [ZZZ-10]\n" ) {
cerr << s ;
BOOST_ERROR("formatting error. (with special paddings)");
}
s = str( format("[% 6.8s] [% 8.6s] [% 7.7s]\n")
% group(internal, setfill('x'), Rational(12345,54321))
% group(internal, setfill('x'), Rational(123,45))
% group(internal, setfill('x'), Rational(123,321))
);
if(s != (s2="[ 12345/5] [ xx123/4] [ 123/32]\n" )) {
cerr << s << s2;
BOOST_ERROR("formatting error. (with special paddings)");
}
s = str( format("[% 6.8s] [% 6.8s] [% 6.8s] [% 6.8s] [%6.8s]\n")
% 1234567897
% group(setfill('x'), 12)
% group(internal, setfill('x'), 12)
% group(internal, setfill('x'), 1234567890)
% group(internal, setfill('x'), 123456)
);
if(s != (s2="[ 1234567] [xxx 12] [ xxx12] [ 1234567] [123456]\n") ) {
cerr << s << s2;
BOOST_ERROR("formatting error. (with special paddings)");
}
s = str( format("[% 8.6s] [% 6.4s] [% 6.4s] [% 8.6s] [% 8.6s]\n")
% 1234567897
% group(setfill('x'), 12)
% group(internal, setfill('x'), 12)
% group(internal, setfill('x'), 1234567890)
% group(internal, setfill('x'), 12345)
);
if(s != (s2="[ 12345] [xxx 12] [ xxx12] [ xx12345] [ xx12345]\n") ) {
cerr << s << s2;
BOOST_ERROR("formatting error. (with special paddings)");
}
// nesting formats :
s = str( format("%2$014x [%1%] %|2$05|\n") % (format("%05s / %s") % -18 % 7)
%group(showbase, -100)
);
if( s != "0x0000ffffff9c [-0018 / 7] -0100\n" ){
cerr << s ;
BOOST_ERROR("nesting did not work");
}
// bind args, and various arguments counts :
{
boost::format bf("%1% %4% %1%");
bf.bind_arg(1, "one") % 2 % "three" ;
BOOST_TEST_EQ(bf.expected_args(), 4);
BOOST_TEST_EQ(bf.fed_args(), 2);
BOOST_TEST_EQ(bf.bound_args(), 1);
BOOST_TEST_EQ(bf.remaining_args(), 1);
BOOST_TEST_EQ(bf.cur_arg(), 4);
bf.clear_binds();
bf % "one" % 2 % "three" ;
BOOST_TEST_EQ(bf.expected_args(), 4);
BOOST_TEST_EQ(bf.fed_args(), 3);
BOOST_TEST_EQ(bf.bound_args(), 0);
BOOST_TEST_EQ(bf.remaining_args(), 1);
BOOST_TEST_EQ(bf.cur_arg(), 4);
}
// testcase for bug reported at
// http://lists.boost.org/boost-users/2006/05/19723.php
{
format f("%40t%1%");
int x = 0;
f.bind_arg(1, x);
f.clear();
}
// testcase for bug reported at
// http://lists.boost.org/boost-users/2005/11/15454.php
std::string l_param;
std::string l_str = (boost::format("here is an empty string: %1%") % l_param).str();
BOOST_TEST_EQ(std::string("here is an empty string: "), l_str);
// testcase for SourceForge bug #1506914
std::string arg; // empty string
s = str(format("%=8s") % arg);
BOOST_TEST_EQ(std::string(" "), s);
return boost::report_errors();
}
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