1 ///////////////////////////////////////////////////////////////////////////////
2 // test_format.hpp
3 //
4 // Copyright 2008 Eric Niebler. Distributed under the Boost
5 // Software License, Version 1.0. (See accompanying file
6 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 //
8 // Test all the different ways to call regex_replace with a formatter.
9
10 #include <map>
11 #include <string>
12 #include <boost/test/unit_test.hpp>
13 #include <boost/xpressive/xpressive.hpp>
14
15 using namespace boost::xpressive;
16
17 std::map<std::string, std::string> replacements;
18
19 struct format1
20 {
21 template<typename BidiIter>
operator ()format122 std::string operator()(match_results<BidiIter> const &what) const
23 {
24 return replacements[what[1].str()];
25 }
26 };
27
28 struct format2
29 {
30 template<typename BidiIter, typename OutIter>
operator ()format231 OutIter operator()(match_results<BidiIter> const &what, OutIter out) const
32 {
33 std::map<std::string, std::string>::const_iterator where = replacements.find(what[1].str());
34 if(where != replacements.end())
35 out = std::copy((*where).second.begin(), (*where).second.end(), out);
36 return out;
37 }
38 };
39
40 struct format3
41 {
42 template<typename BidiIter, typename OutIter>
operator ()format343 OutIter operator()(match_results<BidiIter> const &what, OutIter out, regex_constants::match_flag_type) const
44 {
45 std::map<std::string, std::string>::const_iterator where = replacements.find(what[1].str());
46 if(where != replacements.end())
47 out = std::copy((*where).second.begin(), (*where).second.end(), out);
48 return out;
49 }
50 };
51
format_fun(smatch const & what)52 std::string format_fun(smatch const &what)
53 {
54 return replacements[what[1].str()];
55 }
56
c_format_fun(cmatch const & what)57 std::string c_format_fun(cmatch const &what)
58 {
59 return replacements[what[1].str()];
60 }
61
test_main()62 void test_main()
63 {
64 replacements["X"] = "this";
65 replacements["Y"] = "that";
66
67 std::string input("\"$(X)\" has the value \"$(Y)\""), output;
68 sregex rx = sregex::compile("\\$\\(([^\\)]+)\\)");
69 cregex crx = cregex::compile("\\$\\(([^\\)]+)\\)");
70
71 std::string result("\"this\" has the value \"that\"");
72
73 output = regex_replace(input, rx, format1());
74 BOOST_CHECK_EQUAL(output, result);
75
76 output = regex_replace(input.c_str(), crx, format1());
77 BOOST_CHECK_EQUAL(output, result);
78
79 output = regex_replace(input, rx, format2());
80 BOOST_CHECK_EQUAL(output, result);
81
82 output = regex_replace(input.c_str(), crx, format2());
83 BOOST_CHECK_EQUAL(output, result);
84
85 output = regex_replace(input, rx, format3());
86 BOOST_CHECK_EQUAL(output, result);
87
88 output = regex_replace(input.c_str(), crx, format3());
89 BOOST_CHECK_EQUAL(output, result);
90
91 output = regex_replace(input, rx, format_fun);
92 BOOST_CHECK_EQUAL(output, result);
93
94 output = regex_replace(input.c_str(), crx, c_format_fun);
95 BOOST_CHECK_EQUAL(output, result);
96
97 output = regex_replace(input, rx, &format_fun);
98 BOOST_CHECK_EQUAL(output, result);
99
100 output = regex_replace(input.c_str(), crx, &c_format_fun);
101 BOOST_CHECK_EQUAL(output, result);
102
103 output.clear();
104 regex_replace(std::back_inserter(output), input.begin(), input.end(), rx, format1());
105 BOOST_CHECK_EQUAL(output, result);
106
107 output.clear();
108 regex_replace(std::back_inserter(output), input.begin(), input.end(), rx, format2());
109 BOOST_CHECK_EQUAL(output, result);
110
111 output.clear();
112 regex_replace(std::back_inserter(output), input.begin(), input.end(), rx, format2());
113 BOOST_CHECK_EQUAL(output, result);
114
115 output.clear();
116 regex_replace(std::back_inserter(output), input.begin(), input.end(), rx, format_fun);
117 BOOST_CHECK_EQUAL(output, result);
118
119 output.clear();
120 regex_replace(std::back_inserter(output), input.begin(), input.end(), rx, &format_fun);
121 BOOST_CHECK_EQUAL(output, result);
122 }
123
124 using namespace boost::unit_test;
125 ///////////////////////////////////////////////////////////////////////////////
126 // init_unit_test_suite
127 //
init_unit_test_suite(int argc,char * argv[])128 test_suite* init_unit_test_suite( int argc, char* argv[] )
129 {
130 test_suite *test = BOOST_TEST_SUITE("test_format");
131 test->add(BOOST_TEST_CASE(&test_main));
132 return test;
133 }
134