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// 1999-08-16 bkoz

// 1999-11-01 bkoz

// Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 27.6.2.5.4 basic_ostream character inserters

#include <ostream>

#include <sstream>

#include <testsuite_hooks.h>

class test_buffer_1 : public std::streambuf

{

public:

  test_buffer_1(const std::string& s) : str(s), it(str.begin()) { }

protected:

  virtual int underflow() { return (it != str.end() ? *it : EOF); }

  virtual int uflow() { return (it != str.end() ? *it++ : EOF); }

private:

  const std::string str;

  std::string::const_iterator it;

};

class test_buffer_2 : public std::streambuf

{

public:

  test_buffer_2(const std::string& s) : str(s), it(str.begin()) { }

protected:

  virtual int underflow() { return (it != str.end() ? *it : EOF); }

  virtual int uflow() { return (it != str.end() ? *it++ : EOF); }

  virtual std::streamsize showmanyc() { return std::distance(it, str.end()); }

private:

  const std::string str;

  std::string::const_iterator it;

};

class test_buffer_3 : public std::streambuf

{

public:

  test_buffer_3(const std::string& s) : str(s), it(str.begin()) { }

protected:

  virtual int underflow() { return (it != str.end() ? *it : EOF); }

  virtual int uflow() { return (it != str.end() ? *it++ : EOF); }

  virtual std::streamsize showmanyc()

  {

    std::streamsize ret = std::distance(it, str.end());

    return ret > 0 ? ret : -1;

  }

private:

  const std::string str;

  std::string::const_iterator it;

};

class test_buffer_4 : public std::streambuf {

public:

  test_buffer_4(const std::string& s) : str(s), it(str.begin())

  {

    if (it != str.end()) {

      buf[0] = *it++;

      setg(buf, buf, buf+1);

    }

  }

protected:

  virtual int underflow() { return (it != str.end() ? *it : EOF); }

  virtual int uflow() { return (it != str.end() ? *it++ : EOF); }

  virtual std::streamsize showmanyc() {

    std::streamsize ret = std::distance(it, str.end());

    return ret > 0 ? ret : -1;

  }

private:

  const std::string str;

  std::string::const_iterator it;

  char buf[1];

};

void test(const std::string& str, std::streambuf& buf)

{

  bool test __attribute__((unused)) = true;

  std::ostringstream out;

  std::istream in(&buf);

  out << in.rdbuf();

  if (out.str() != str)

    VERIFY( false );

}

// libstdc++/6745

// libstdc++/8071

// libstdc++/8127

// Jonathan Lennox  <lennox@cs.columbia.edu>

void test05()

{

  std::string string_a("Hello, world!");

  std::string string_b("");

  test_buffer_1 buf1a(string_a);

  test_buffer_1 buf1b(string_b);

  test_buffer_2 buf2a(string_a);

  test_buffer_2 buf2b(string_b);

  test_buffer_3 buf3a(string_a);

  test_buffer_3 buf3b(string_b);

  test_buffer_4 buf4a(string_a);

  test_buffer_4 buf4b(string_b);

  test(string_a, buf1a);

  test(string_b, buf1b);

  test(string_a, buf2a);

  test(string_b, buf2b);

  test(string_a, buf3a);

  test(string_b, buf3b);

  test(string_a, buf4a);

  test(string_b, buf4b);

}

int

main()

{

  test05();

  return 0;

}