[857] | 1 | // (C) Copyright Jonathan Turkanis 2005.
|
---|
| 2 | // Distributed under the Boost Software License, Version 1.0. (See accompanying
|
---|
| 3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
|
---|
| 4 |
|
---|
| 5 | // See http://www.boost.org/libs/iostreams for documentation.
|
---|
| 6 |
|
---|
| 7 | #ifndef BOOST_IOSTREAMS_FILTER_TEST_HPP_INCLUDED
|
---|
| 8 |
|
---|
| 9 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
|
---|
| 10 | # pragma once
|
---|
| 11 | #endif
|
---|
| 12 |
|
---|
| 13 | #include <boost/config.hpp> // BOOST_MSVC,put size_t in std.
|
---|
| 14 | #include <boost/detail/workaround.hpp>
|
---|
| 15 | #include <algorithm> // min.
|
---|
| 16 | #include <cstddef> // size_t.
|
---|
| 17 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) || \
|
---|
| 18 | BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) || \
|
---|
| 19 | BOOST_WORKAROUND(__MWERKS__, <= 0x3003) \
|
---|
| 20 | /**/
|
---|
| 21 | # include <cstdlib> // rand.
|
---|
| 22 | #endif
|
---|
| 23 | #include <cstring> // memcpy, strlen.
|
---|
| 24 | #include <iterator>
|
---|
| 25 | #include <string>
|
---|
| 26 | #include <vector>
|
---|
| 27 | #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) && \
|
---|
| 28 | !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \
|
---|
| 29 | !BOOST_WORKAROUND(__MWERKS__, <= 0x3003) \
|
---|
| 30 | /**/
|
---|
| 31 | # include <boost/random/linear_congruential.hpp>
|
---|
| 32 | # include <boost/random/uniform_smallint.hpp>
|
---|
| 33 | #endif
|
---|
| 34 | #include <boost/iostreams/categories.hpp>
|
---|
| 35 | #include <boost/iostreams/compose.hpp>
|
---|
| 36 | #include <boost/iostreams/copy.hpp>
|
---|
| 37 | #include <boost/iostreams/detail/adapter/basic_adapter.hpp>
|
---|
| 38 | #include <boost/iostreams/detail/bool_trait_def.hpp>
|
---|
| 39 | #include <boost/iostreams/detail/ios.hpp>
|
---|
| 40 | #include <boost/iostreams/device/array.hpp>
|
---|
| 41 | #include <boost/iostreams/device/back_inserter.hpp>
|
---|
| 42 | #include <boost/iostreams/operations.hpp>
|
---|
| 43 | #include <boost/mpl/bool.hpp>
|
---|
| 44 | #include <boost/type_traits/is_array.hpp>
|
---|
| 45 | #include <boost/type_traits/is_same.hpp>
|
---|
| 46 |
|
---|
| 47 | #undef memcpy
|
---|
| 48 | #undef rand
|
---|
| 49 | #undef strlen
|
---|
| 50 |
|
---|
| 51 | #if defined(BOOST_NO_STDC_NAMESPACE) && !defined(__LIBCOMO__)
|
---|
| 52 | namespace std {
|
---|
| 53 | using ::memcpy;
|
---|
| 54 | using ::strlen;
|
---|
| 55 | #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) || \
|
---|
| 56 | BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) || \
|
---|
| 57 | BOOST_WORKAROUND(__MWERKS__, <= 0x3003) \
|
---|
| 58 | /**/
|
---|
| 59 | using ::rand;
|
---|
| 60 | #endif
|
---|
| 61 | }
|
---|
| 62 | #endif
|
---|
| 63 |
|
---|
| 64 | namespace boost { namespace iostreams {
|
---|
| 65 |
|
---|
| 66 | BOOST_IOSTREAMS_BOOL_TRAIT_DEF(is_string, std::basic_string, 3)
|
---|
| 67 |
|
---|
| 68 | const std::streamsize default_increment = 5;
|
---|
| 69 |
|
---|
| 70 | #if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) && \
|
---|
| 71 | !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) && \
|
---|
| 72 | !BOOST_WORKAROUND(__MWERKS__, <= 0x3003) \
|
---|
| 73 | /**/
|
---|
| 74 | std::streamsize rand(int inc)
|
---|
| 75 | {
|
---|
| 76 | static rand48 random_gen;
|
---|
| 77 | static uniform_smallint<int> random_dist(0, inc);
|
---|
| 78 | return random_dist(random_gen);
|
---|
| 79 | }
|
---|
| 80 | #else
|
---|
| 81 | std::streamsize rand(int inc)
|
---|
| 82 | {
|
---|
| 83 | return (std::rand() * inc + 1) / RAND_MAX;
|
---|
| 84 | }
|
---|
| 85 | #endif
|
---|
| 86 |
|
---|
| 87 | class non_blocking_source {
|
---|
| 88 | public:
|
---|
| 89 | typedef char char_type;
|
---|
| 90 | struct category
|
---|
| 91 | : source_tag,
|
---|
| 92 | peekable_tag
|
---|
| 93 | { };
|
---|
| 94 | explicit non_blocking_source( const std::string& data,
|
---|
| 95 | std::streamsize inc = default_increment )
|
---|
| 96 | : data_(data), inc_(inc), pos_(0)
|
---|
| 97 | { }
|
---|
| 98 | std::streamsize read(char* s, std::streamsize n)
|
---|
| 99 | {
|
---|
| 100 | if (pos_ == static_cast<std::streamsize>(data_.size()))
|
---|
| 101 | return -1;
|
---|
| 102 | std::streamsize avail =
|
---|
| 103 | (std::min) (n, static_cast<std::streamsize>(data_.size() - pos_));
|
---|
| 104 | std::streamsize amt = (std::min) (rand(inc_), avail);
|
---|
| 105 | if (amt)
|
---|
| 106 | std::memcpy(s, data_.c_str() + pos_, amt);
|
---|
| 107 | pos_ += amt;
|
---|
| 108 | return amt;
|
---|
| 109 | }
|
---|
| 110 |
|
---|
| 111 | bool putback(char c)
|
---|
| 112 | {
|
---|
| 113 | if (pos_ > 0) {
|
---|
| 114 | data_[--pos_] = c;
|
---|
| 115 | return true;
|
---|
| 116 | }
|
---|
| 117 | return false;
|
---|
| 118 | }
|
---|
| 119 | private:
|
---|
| 120 | std::string data_;
|
---|
| 121 | std::streamsize inc_, pos_;
|
---|
| 122 | };
|
---|
| 123 |
|
---|
| 124 | class non_blocking_sink : public sink {
|
---|
| 125 | public:
|
---|
| 126 | non_blocking_sink( std::string& dest,
|
---|
| 127 | std::streamsize inc = default_increment )
|
---|
| 128 | : dest_(dest), inc_(inc)
|
---|
| 129 | { }
|
---|
| 130 | std::streamsize write(const char* s, std::streamsize n)
|
---|
| 131 | {
|
---|
| 132 | std::streamsize amt = (std::min) (rand(inc_), n);
|
---|
| 133 | dest_.insert(dest_.end(), s, s + amt);
|
---|
| 134 | return amt;
|
---|
| 135 | }
|
---|
| 136 | private:
|
---|
| 137 | std::string& dest_;
|
---|
| 138 | std::streamsize inc_;
|
---|
| 139 | };
|
---|
| 140 |
|
---|
| 141 | //--------------Definition of test_input_filter-------------------------------//
|
---|
| 142 |
|
---|
| 143 | template<typename Filter>
|
---|
| 144 | bool test_input_filter( Filter filter,
|
---|
| 145 | const std::string& input,
|
---|
| 146 | const std::string& output,
|
---|
| 147 | mpl::true_ )
|
---|
| 148 | {
|
---|
| 149 | for ( int inc = default_increment;
|
---|
| 150 | inc < default_increment * 40;
|
---|
| 151 | inc += default_increment )
|
---|
| 152 | {
|
---|
| 153 | non_blocking_source src(input, inc);
|
---|
| 154 | std::string dest;
|
---|
| 155 | iostreams::copy(compose(filter, src), iostreams::back_inserter(dest));
|
---|
| 156 | if (dest != output)
|
---|
| 157 | return false;
|
---|
| 158 | }
|
---|
| 159 | return true;
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | template<typename Filter, typename Source1, typename Source2>
|
---|
| 163 | bool test_input_filter( Filter filter,
|
---|
| 164 | const Source1& input,
|
---|
| 165 | const Source2& output,
|
---|
| 166 | mpl::false_ )
|
---|
| 167 | {
|
---|
| 168 | std::string in;
|
---|
| 169 | std::string out;
|
---|
| 170 | iostreams::copy(input, iostreams::back_inserter(in));
|
---|
| 171 | iostreams::copy(output, iostreams::back_inserter(out));
|
---|
| 172 | return test_input_filter(filter, in, out);
|
---|
| 173 | }
|
---|
| 174 |
|
---|
| 175 | template<typename Filter, typename Source1, typename Source2>
|
---|
| 176 | bool test_input_filter( Filter filter,
|
---|
| 177 | const Source1& input,
|
---|
| 178 | const Source2& output )
|
---|
| 179 | {
|
---|
| 180 | // Use tag dispatch to compensate for bad overload resolution.
|
---|
| 181 | return test_input_filter( filter, input, output,
|
---|
| 182 | is_string<Source1>() );
|
---|
| 183 | }
|
---|
| 184 |
|
---|
| 185 | //--------------Definition of test_output_filter------------------------------//
|
---|
| 186 |
|
---|
| 187 | template<typename Filter>
|
---|
| 188 | bool test_output_filter( Filter filter,
|
---|
| 189 | const std::string& input,
|
---|
| 190 | const std::string& output,
|
---|
| 191 | mpl::true_ )
|
---|
| 192 | {
|
---|
| 193 | for ( int inc = default_increment;
|
---|
| 194 | inc < default_increment * 40;
|
---|
| 195 | inc += default_increment )
|
---|
| 196 | {
|
---|
| 197 | array_source src(input.data(), input.data() + input.size());
|
---|
| 198 | std::string dest;
|
---|
| 199 | iostreams::copy(src, compose(filter, non_blocking_sink(dest, inc)));
|
---|
| 200 | if (dest != output )
|
---|
| 201 | return false;
|
---|
| 202 | }
|
---|
| 203 | return true;
|
---|
| 204 | }
|
---|
| 205 |
|
---|
| 206 | template<typename Filter, typename Source1, typename Source2>
|
---|
| 207 | bool test_output_filter( Filter filter,
|
---|
| 208 | const Source1& input,
|
---|
| 209 | const Source2& output,
|
---|
| 210 | mpl::false_ )
|
---|
| 211 | {
|
---|
| 212 | std::string in;
|
---|
| 213 | std::string out;
|
---|
| 214 | iostreams::copy(input, iostreams::back_inserter(in));
|
---|
| 215 | iostreams::copy(output, iostreams::back_inserter(out));
|
---|
| 216 | return test_output_filter(filter, in, out);
|
---|
| 217 | }
|
---|
| 218 |
|
---|
| 219 | template<typename Filter, typename Source1, typename Source2>
|
---|
| 220 | bool test_output_filter( Filter filter,
|
---|
| 221 | const Source1& input,
|
---|
| 222 | const Source2& output )
|
---|
| 223 | {
|
---|
| 224 | // Use tag dispatch to compensate for bad overload resolution.
|
---|
| 225 | return test_output_filter( filter, input, output,
|
---|
| 226 | is_string<Source1>() );
|
---|
| 227 | }
|
---|
| 228 |
|
---|
| 229 | //--------------Definition of test_filter_pair--------------------------------//
|
---|
| 230 |
|
---|
| 231 | template<typename OutputFilter, typename InputFilter>
|
---|
| 232 | bool test_filter_pair( OutputFilter out,
|
---|
| 233 | InputFilter in,
|
---|
| 234 | const std::string& data,
|
---|
| 235 | mpl::true_ )
|
---|
| 236 | {
|
---|
| 237 | for ( int inc = default_increment;
|
---|
| 238 | inc <= default_increment * 40;
|
---|
| 239 | inc += default_increment )
|
---|
| 240 | {
|
---|
| 241 | array_source src(data.data(), data.data() + data.size());
|
---|
| 242 | std::string temp;
|
---|
| 243 | std::string dest;
|
---|
| 244 | iostreams::copy(src, compose(out, non_blocking_sink(temp, inc)));
|
---|
| 245 | iostreams::copy(
|
---|
| 246 | compose(in, non_blocking_source(temp, inc)),
|
---|
| 247 | iostreams::back_inserter(dest)
|
---|
| 248 | );
|
---|
| 249 | if (dest != data)
|
---|
| 250 | return false;
|
---|
| 251 | }
|
---|
| 252 | return true;
|
---|
| 253 | }
|
---|
| 254 |
|
---|
| 255 | template<typename OutputFilter, typename InputFilter, typename Source>
|
---|
| 256 | bool test_filter_pair( OutputFilter out,
|
---|
| 257 | InputFilter in,
|
---|
| 258 | const Source& data,
|
---|
| 259 | mpl::false_ )
|
---|
| 260 | {
|
---|
| 261 | std::string str;
|
---|
| 262 | iostreams::copy(data, iostreams::back_inserter(str));
|
---|
| 263 | return test_filter_pair(out, in, str);
|
---|
| 264 | }
|
---|
| 265 |
|
---|
| 266 | template<typename OutputFilter, typename InputFilter, typename Source>
|
---|
| 267 | bool test_filter_pair( OutputFilter out,
|
---|
| 268 | InputFilter in,
|
---|
| 269 | const Source& data )
|
---|
| 270 | {
|
---|
| 271 | // Use tag dispatch to compensate for bad overload resolution.
|
---|
| 272 | return test_filter_pair(out, in, data, is_string<Source>());
|
---|
| 273 | }
|
---|
| 274 |
|
---|
| 275 | } } // End namespaces iostreams, boost.
|
---|
| 276 |
|
---|
| 277 | #endif // #ifndef BOOST_IOSTREAMS_FILTER_TEST_HPP_INCLUDED
|
---|