75555da78d
2000-07-07 brent verner <brent@rcfile.org> * testsuite/27_io/istream_unformatted.cc (test05): New test. 2000-07-07 Benjamin Kosnik <bkoz@gnu.org> * bits/istream.tcc (istream::getline): Minor tweaks. From-SVN: r34913
434 lines
11 KiB
C++
434 lines
11 KiB
C++
// 1999-08-11 bkoz
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// Copyright (C) 1999, 2000 Free Software Foundation
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// 27.6.1.3 unformatted input functions
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#include <istream>
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#include <sstream>
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#include <fstream>
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#ifdef DEBUG_ASSERT
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#include <cassert>
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# define VERIFY(fn) assert(fn)
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#else
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# define VERIFY(fn)
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#endif
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bool test01() {
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typedef std::ios::traits_type traits_type;
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bool test = true;
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const std::string str_01;
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const std::string str_02("soul eyes: john coltrane quartet");
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std::string strtmp;
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std::stringbuf isbuf_03(str_02, std::ios_base::in);
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std::stringbuf isbuf_04(str_02, std::ios_base::in);
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std::istream is_00(NULL);
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std::istream is_03(&isbuf_03);
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std::istream is_04(&isbuf_04);
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std::ios_base::iostate state1, state2, statefail, stateeof;
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statefail = std::ios_base::failbit;
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stateeof = std::ios_base::eofbit;
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// istream& read(char_type* s, streamsize n)
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char carray[60] = "";
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state1 = is_04.rdstate();
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is_04.read(carray, 0);
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state2 = is_04.rdstate();
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test &= state1 == state2;
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state1 = is_04.rdstate();
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is_04.read(carray, 9);
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= !strncmp(carray, "soul eyes", 9);
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test &= is_04.peek() == ':';
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state1 = is_03.rdstate();
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is_03.read(carray, 60);
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state2 = is_03.rdstate();
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test &= state1 != state2;
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test &= static_cast<bool>(state2 & stateeof);
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test &= static_cast<bool>(state2 & statefail);
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test &= !strncmp(carray, "soul eyes: john coltrane quartet", 35);
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// istream& ignore(streamsize n = 1, int_type delim = traits::eof())
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state1 = is_04.rdstate();
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is_04.ignore();
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test &= is_04.gcount() == 1;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= is_04.peek() == ' ';
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state1 = is_04.rdstate();
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is_04.ignore(0);
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test &= is_04.gcount() == 0;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= is_04.peek() == ' ';
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state1 = is_04.rdstate();
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is_04.ignore(5, traits_type::to_int_type(' '));
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test &= is_04.gcount() == 1;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= is_04.peek() == 'j';
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// int_type peek()
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state1 = is_04.rdstate();
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test &= is_04.peek() == 'j';
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test &= is_04.gcount() == 0;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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is_04.ignore(30);
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state1 = is_04.rdstate();
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test &= is_04.peek() == traits_type::eof();
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test &= is_04.gcount() == 0;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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// istream& putback(char c)
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is_04.clear();
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state1 = is_04.rdstate();
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is_04.putback('|');
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test &= is_04.gcount() == 0;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= is_04.peek() == '|';
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// istream& unget()
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is_04.clear();
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state1 = is_04.rdstate();
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is_04.unget();
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test &= is_04.gcount() == 0;
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state2 = is_04.rdstate();
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test &= state1 == state2;
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test &= is_04.peek() == 'e';
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// int sync()
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int i = is_00.sync();
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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bool test02(void)
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{
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typedef std::char_traits<char> traits_type;
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bool test = true;
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const char str_lit01[] = " sun*ra
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and his myth science arkestra present
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angles and demons @ play
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the nubians of plutonia";
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std::string str01(str_lit01);
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std::string strtmp;
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std::stringbuf sbuf_04(str01, std::ios_base::in);
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std::istream is_00(NULL);
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std::istream is_04(&sbuf_04);
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std::ios_base::iostate state1, state2, statefail, stateeof;
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statefail = std::ios_base::failbit;
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stateeof = std::ios_base::eofbit;
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std::streamsize count1, count2;
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char carray1[400] = "";
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// istream& getline(char* s, streamsize n, char delim)
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// istream& getline(char* s, streamsize n)
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state1 = is_00.rdstate();
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is_00.getline(carray1, 20, '*');
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state2 = is_00.rdstate();
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test &= is_04.gcount() == 0;
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test &= state1 != state2;
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test &= bool(state2 & statefail);
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state1 = is_04.rdstate();
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is_04.getline(carray1, 1, '\t'); // extracts, throws away
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 1;
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test &= state1 == state2;
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test &= state1 == 0;
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test &= !traits_type::compare("", carray1, 1);
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state1 = is_04.rdstate();
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is_04.getline(carray1, 20, '*');
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 10;
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test &= state1 == state2;
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test &= state1 == 0;
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test &= !traits_type::compare("\t\t sun", carray1, 10);
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state1 = is_04.rdstate();
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is_04.getline(carray1, 20);
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 4;
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test &= state1 == state2;
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test &= state1 == 0;
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test &= !traits_type::compare("ra ", carray1, 4);
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state1 = is_04.rdstate();
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is_04.getline(carray1, 65);
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 64;
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test &= state1 != state2;
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test &= state2 == statefail;
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test &= !traits_type::compare(" and his myth science arkestra presen", carray1, 65);
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is_04.clear();
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state1 = is_04.rdstate();
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is_04.getline(carray1, 120, '|');
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 106;
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test &= state1 != state2;
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test &= state2 == stateeof;
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is_04.clear();
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state1 = is_04.rdstate();
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is_04.getline(carray1, 100, '|');
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state2 = is_04.rdstate();
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test &= is_04.gcount() == 0;
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test &= state1 != state2;
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test &= static_cast<bool>(state2 & stateeof);
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test &= static_cast<bool>(state2 & statefail);
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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bool test03(void)
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{
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typedef std::char_traits<char> traits_type;
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bool test = true;
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const char str_lit01[] = " sun*ra
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& his arkestra, featuring john gilmore:
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jazz in silhouette: images and forecasts of tomorrow";
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std::string str01(str_lit01);
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std::string strtmp;
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std::stringbuf sbuf_03;
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std::stringbuf sbuf_04(str01, std::ios_base::in);
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std::stringbuf sbuf_05(str01, std::ios_base::in);
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std::istream is_00(NULL);
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std::istream is_04(&sbuf_04);
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std::istream is_05(&sbuf_05);
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std::ios_base::iostate state1, state2, statefail, stateeof;
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statefail = std::ios_base::failbit;
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stateeof = std::ios_base::eofbit;
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std::streamsize count1, count2;
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char carray1[400] = "";
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// int_type get()
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// istream& get(char*, streamsize, char delim)
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// istream& get(char*, streamsize)
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// istream& get(streambuf&, char delim)
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// istream& get(streambuf&)
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is_00.get(carray1, 2);
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test &= static_cast<bool>(is_00.rdstate() & statefail);
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test &= is_00.gcount() == 0;
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is_04.get(carray1, 4);
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test &= !(is_04.rdstate() & statefail);
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test &= !traits_type::compare(carray1, " ", 4);
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test &= is_04.gcount() == 3;
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is_04.clear();
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is_04.get(carray1 + 3, 200);
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test &= !(is_04.rdstate() & statefail);
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test &= !(is_04.rdstate() & stateeof);
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test &= !traits_type::compare(carray1, str_lit01, 10);
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test &= is_04.gcount() == 7;
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is_04.clear();
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is_04.get(carray1, 200);
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test &= !(is_04.rdstate() & stateeof);
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test &= static_cast<bool>(is_04.rdstate() & statefail); // delimiter
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test &= is_04.gcount() == 0;
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is_04.clear();
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is_04.get(carray1, 200, '[');
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test &= static_cast<bool>(is_04.rdstate() & stateeof);
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test &= !(is_04.rdstate() & statefail);
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test &= is_04.gcount() == 125;
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is_04.clear();
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is_04.get(carray1, 200);
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test &= static_cast<bool>(is_04.rdstate() & stateeof);
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test &= static_cast<bool>(is_04.rdstate() & statefail);
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test &= is_04.gcount() == 0;
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std::stringbuf sbuf_02(std::ios_base::in);
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is_05.clear();
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is_05.get(sbuf_02);
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test &= is_05.gcount() == 0;
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test &= static_cast<bool>(is_05.rdstate() & statefail);
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test &= !(is_05.rdstate() & stateeof);
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is_05.clear();
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is_05.get(sbuf_03);
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test &= is_05.gcount() == 10;
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test &= sbuf_03.str() == " sun*ra ";
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test &= !(is_05.rdstate() & statefail);
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test &= !(is_05.rdstate() & stateeof);
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is_05.clear();
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is_05.get(sbuf_03, '|');
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test &= is_05.gcount() == 125;
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test &= sbuf_03.str() == str_lit01;
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test &= !(is_05.rdstate() & statefail);
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test &= static_cast<bool>(is_05.rdstate() & stateeof);
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is_05.clear();
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is_05.get(sbuf_03, '|');
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test &= is_05.gcount() == 0;
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test &= static_cast<bool>(is_05.rdstate() & stateeof);
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test &= static_cast<bool>(is_05.rdstate() & statefail);
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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return test;
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}
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// http://sourceware.cygnus.com/ml/libstdc++/2000-q1/msg00177.html
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void test04()
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{
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bool test = true;
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const std::string str_00("Red_Garland_Qunitet-Soul_Junction");
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std::string strtmp;
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char c_array[str_00.size() + 4];
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std::stringbuf isbuf_00(str_00, std::ios_base::in);
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std::istream is_00(&isbuf_00);
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std::ios_base::iostate state1, state2, statefail, stateeof;
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statefail = std::ios_base::failbit;
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stateeof = std::ios_base::eofbit;
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state1 = stateeof | statefail;
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test &= is_00.gcount() == 0;
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is_00.read(c_array, str_00.size() + 1);
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test &= is_00.gcount() == str_00.size();
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test &= is_00.rdstate() == state1;
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is_00.read(c_array, str_00.size());
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test &= is_00.rdstate() == state1;
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#ifdef DEBUG_ASSERT
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assert(test);
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#endif
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}
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// http://sourceware.cygnus.com/ml/libstdc++/2000-07/msg00003.html
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bool test05()
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{
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const char* charray = "
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a
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aa
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aaa
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aaaa
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aaaaa
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aaaaaa
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aaaaaaa
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aaaaaaaa
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aaaaaaaaa
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aaaaaaaaaa
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aaaaaaaaaaa
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aaaaaaaaaaaa
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aaaaaaaaaaaaa
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aaaaaaaaaaaaaa
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";
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bool test = true;
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const std::streamsize it = 5;
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std::streamsize br = 0;
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char tmp[it];
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std::stringbuf sb(charray, std::ios_base::in);
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std::istream ifs(&sb);
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std::streamsize blen = strlen(charray);
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VERIFY(ifs);
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while(ifs.getline(tmp, it) || ifs.gcount())
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{
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br += ifs.gcount();
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if(ifs.eof())
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{
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// Just sanity checks to make sure we've extracted the same
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// number of chars that were in the file.
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VERIFY(br == blen);
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// Also, we should only set the failbit if we could
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// _extract_ no chars from the stream, i.e. the first read
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// returned EOF.
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VERIFY(ifs.fail() && ifs.gcount() == 0);
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}
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else if(ifs.fail())
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{
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// either
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// -> extracted no characters
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// or
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// -> n - 1 characters are stored
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VERIFY(strlen(tmp) == it - 1);
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ifs.clear(ifs.rdstate() & ~std::ios::failbit);
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VERIFY(ifs);
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continue;
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}
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else
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{
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// -> strlen(__s) < n - 1
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// -> delimiter was seen -> gcount() > strlen(__s)
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VERIFY(ifs.gcount() > strlen(tmp));
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VERIFY(it - 1 > strlen(tmp));
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continue;
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}
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}
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return 0;
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}
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int main()
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{
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test01();
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test02();
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test03();
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test04();
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test05();
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return 0;
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}
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