mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-28 00:15:23 +08:00
3b0fd4bcdb
2001-06-11 Benjamin Kosnik <bkoz@redhat.com> libstdc++/3126 * include/bits/basic_string.h (string::compare): Adjust signatures as per DR 5. * include/bits/basic_string.tcc: And here. libstdc++/2346 * config/c_io_stdio.h: Remove whitespace. * testsuite/27_io/istream_seeks.cc (test03): Add regression. (test02): Add regression. * testsuite/27_io/istream_seeks-3.tst: New file. From-SVN: r43240
366 lines
9.1 KiB
C++
366 lines
9.1 KiB
C++
// 2000-06-29 bkoz
|
|
|
|
// Copyright (C) 2000, 2001 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
// USA.
|
|
|
|
// 27.6.1.3 unformatted input functions
|
|
// NB: ostream has a particular "seeks" category. Adopt this for istreams too.
|
|
// @require@ %-*.tst %-*.txt
|
|
// @diff@ %-*.tst %-*.txt
|
|
|
|
#include <istream>
|
|
#include <sstream>
|
|
#include <fstream>
|
|
#include <debug_assert.h>
|
|
|
|
bool test01()
|
|
{
|
|
using namespace std;
|
|
typedef ios::pos_type pos_type;
|
|
|
|
bool test = true;
|
|
const char str_lit01[] = "istream_seeks-1.tst";
|
|
|
|
// in
|
|
// test default ctors leave things in the same positions...
|
|
istringstream ist1;
|
|
pos_type p3 = ist1.tellg();
|
|
|
|
ifstream ifs1;
|
|
pos_type p4 = ifs1.tellg();
|
|
|
|
VERIFY( p3 == p4 );
|
|
|
|
// in
|
|
// test ctors leave things in the same positions...
|
|
istringstream ist2("bob_marley:kaya");
|
|
p3 = ist2.tellg();
|
|
|
|
ifstream ifs2(str_lit01);
|
|
p4 = ifs2.tellg();
|
|
|
|
VERIFY( p3 == p4 );
|
|
|
|
#ifdef DEBUG_ASSERT
|
|
assert(test);
|
|
#endif
|
|
|
|
return test;
|
|
}
|
|
|
|
const char* s = " lootpack, peanut butter wolf, rob swift, madlib, quasimoto";
|
|
const int times = 10;
|
|
|
|
void write_rewind(std::iostream& stream)
|
|
{
|
|
for (int j = 0; j < times; j++)
|
|
{
|
|
bool test = true;
|
|
std::streampos begin = stream.tellg();
|
|
|
|
for (int i = 0; i < times; ++i)
|
|
stream << j << '-' << i << s << '\n';
|
|
|
|
stream.seekg(begin);
|
|
std::streampos end = stream.tellg();
|
|
std::streampos badpos = std::streampos(std::streambuf::off_type(-1));
|
|
}
|
|
}
|
|
|
|
void check_contents(std::iostream& stream)
|
|
{
|
|
bool test = true;
|
|
|
|
stream.clear();
|
|
stream.seekg(0, std::ios::beg);
|
|
int i = 0;
|
|
int loop = times * times + 2;
|
|
while (i < loop)
|
|
{
|
|
stream.ignore(80, '\n');
|
|
if (stream.good())
|
|
++i;
|
|
else
|
|
break;
|
|
}
|
|
VERIFY( i == times );
|
|
}
|
|
|
|
// fstream
|
|
// libstdc++/2346
|
|
void test02()
|
|
{
|
|
std::fstream ofstrm;
|
|
ofstrm.open("istream_seeks-3.txt", std::ios::out);
|
|
if (!ofstrm)
|
|
abort();
|
|
write_rewind(ofstrm);
|
|
ofstrm.close();
|
|
|
|
std::fstream ifstrm;
|
|
ifstrm.open("istream_seeks-3.txt", std::ios::in);
|
|
check_contents(ifstrm);
|
|
ifstrm.close();
|
|
}
|
|
|
|
// stringstream
|
|
// libstdc++/2346
|
|
void test03()
|
|
{
|
|
std::stringstream sstrm;
|
|
|
|
write_rewind(sstrm);
|
|
check_contents(sstrm);
|
|
}
|
|
|
|
// fstreams
|
|
void test04(void)
|
|
{
|
|
typedef std::istream::off_type off_type;
|
|
|
|
bool test = true;
|
|
std::istream::pos_type pos01, pos02, pos03, pos04, pos05, pos06;
|
|
std::ios_base::iostate state01, state02;
|
|
const char str_lit01[] = "istream_seeks-1.txt";
|
|
const char str_lit02[] = "istream_seeks-2.txt";
|
|
std::ifstream if01(str_lit01, std::ios_base::in | std::ios_base::out);
|
|
std::ifstream if02(str_lit01, std::ios_base::in);
|
|
std::ifstream if03(str_lit02, std::ios_base::out | std::ios_base::trunc);
|
|
VERIFY( if01.good() );
|
|
VERIFY( if02.good() );
|
|
VERIFY( if03.good() );
|
|
|
|
std::istream is01(if01.rdbuf());
|
|
std::istream is02(if02.rdbuf());
|
|
std::istream is03(if03.rdbuf());
|
|
|
|
// pos_type tellg()
|
|
// in | out
|
|
pos01 = is01.tellg();
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos01 == pos02 );
|
|
// VERIFY( istream::pos_type(0) != pos01 ); //deprecated
|
|
|
|
// in
|
|
pos03 = is02.tellg();
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
// VERIFY( istream::pos_type(0) != pos03 ); //deprecated
|
|
|
|
// out
|
|
pos05 = is03.tellg();
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
// VERIFY( istream::pos_type(0) != pos01 ); //deprecated
|
|
|
|
// istream& seekg(pos_type)
|
|
// istream& seekg(off_type, ios_base::seekdir)
|
|
|
|
// cur
|
|
// NB: see library issues list 136. It's the v-3 interp that seekg
|
|
// only sets the input buffer, or else istreams with buffers that
|
|
// have _M_mode == ios_base::out will fail to have consistency
|
|
// between seekg and tellg.
|
|
state01 = is01.rdstate();
|
|
is01.seekg(10, std::ios_base::cur);
|
|
state02 = is01.rdstate();
|
|
pos01 = is01.tellg();
|
|
VERIFY( pos01 == pos02 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos02 == pos01 );
|
|
|
|
state01 = is02.rdstate();
|
|
is02.seekg(10, std::ios_base::cur);
|
|
state02 = is02.rdstate();
|
|
pos03 = is02.tellg();
|
|
VERIFY( pos03 == pos04 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
|
|
state01 = is03.rdstate();
|
|
is03.seekg(10, std::ios_base::cur);
|
|
state02 = is03.rdstate();
|
|
pos05 = is03.tellg();
|
|
VERIFY( pos05 == pos06 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
|
|
// beg
|
|
state01 = is01.rdstate();
|
|
is01.seekg(20, std::ios_base::beg);
|
|
state02 = is01.rdstate();
|
|
pos01 = is01.tellg();
|
|
VERIFY( pos01 == pos02 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos02 == pos01 );
|
|
|
|
state01 = is02.rdstate();
|
|
is02.seekg(20, std::ios_base::beg);
|
|
state02 = is02.rdstate();
|
|
pos03 = is02.tellg();
|
|
VERIFY( pos03 == pos04 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
|
|
state01 = is03.rdstate();
|
|
is03.seekg(20, std::ios_base::beg);
|
|
state02 = is03.rdstate();
|
|
pos05 = is03.tellg();
|
|
VERIFY( pos05 == pos06 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
|
|
#ifdef DEBUG_ASSERT
|
|
assert(test);
|
|
#endif
|
|
}
|
|
|
|
// stringstreams
|
|
void test05(void)
|
|
{
|
|
typedef std::istream::off_type off_type;
|
|
|
|
bool test = true;
|
|
std::istream::pos_type pos01, pos02, pos03, pos04, pos05, pos06;
|
|
std::ios_base::iostate state01, state02;
|
|
const char str_lit01[] = "istream_seeks-1.tst";
|
|
std::ifstream if01(str_lit01);
|
|
std::ifstream if02(str_lit01);
|
|
std::ifstream if03(str_lit01);
|
|
VERIFY( if01.good() );
|
|
VERIFY( if02.good() );
|
|
VERIFY( if03.good() );
|
|
|
|
std::stringbuf strbuf01(std::ios_base::in | std::ios_base::out);
|
|
if01 >> &strbuf01;
|
|
// initialize stringbufs that are ios_base::out
|
|
std::stringbuf strbuf03(strbuf01.str(), std::ios_base::out);
|
|
// initialize stringbufs that are ios_base::in
|
|
std::stringbuf strbuf02(strbuf01.str(), std::ios_base::in);
|
|
|
|
std::istream is01(&strbuf01);
|
|
std::istream is02(&strbuf02);
|
|
std::istream is03(&strbuf03);
|
|
|
|
// pos_type tellg()
|
|
// in | out
|
|
pos01 = is01.tellg();
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos01 == pos02 );
|
|
// VERIFY( istream::pos_type(0) != pos01 ); // deprecated
|
|
|
|
// in
|
|
pos03 = is02.tellg();
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
// VERIFY( istream::pos_type(0) != pos03 ); // deprecated
|
|
|
|
// out
|
|
pos05 = is03.tellg();
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
// VERIFY( istream::pos_type(0) != pos01 ); //deprecated
|
|
|
|
// istream& seekg(pos_type)
|
|
// istream& seekg(off_type, ios_base::seekdir)
|
|
|
|
// cur
|
|
// NB: see library issues list 136. It's the v-3 interp that seekg
|
|
// only sets the input buffer, or else istreams with buffers that
|
|
// have _M_mode == ios_base::out will fail to have consistency
|
|
// between seekg and tellg.
|
|
state01 = is01.rdstate();
|
|
is01.seekg(10, std::ios_base::cur);
|
|
state02 = is01.rdstate();
|
|
pos01 = is01.tellg();
|
|
VERIFY( pos01 == pos02 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos02 == pos01 );
|
|
|
|
state01 = is02.rdstate();
|
|
is02.seekg(10, std::ios_base::cur);
|
|
state02 = is02.rdstate();
|
|
pos03 = is02.tellg();
|
|
VERIFY( pos03 == pos04 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
|
|
state01 = is03.rdstate();
|
|
is03.seekg(10, std::ios_base::cur);
|
|
state02 = is03.rdstate();
|
|
pos05 = is03.tellg();
|
|
VERIFY( pos05 == pos06 ); // as only out buffer
|
|
VERIFY( state01 != state02 );
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
|
|
// beg
|
|
state01 = is01.rdstate();
|
|
is01.seekg(20, std::ios_base::beg);
|
|
state02 = is01.rdstate();
|
|
pos01 = is01.tellg();
|
|
VERIFY( pos01 == pos02 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos02 = is01.tellg();
|
|
VERIFY( pos02 == pos01 );
|
|
|
|
state01 = is02.rdstate();
|
|
is02.seekg(20, std::ios_base::beg);
|
|
state02 = is02.rdstate();
|
|
pos03 = is02.tellg();
|
|
VERIFY( pos03 == pos04 + off_type(10) );
|
|
VERIFY( state01 == state02 );
|
|
pos04 = is02.tellg();
|
|
VERIFY( pos03 == pos04 );
|
|
|
|
state01 = is03.rdstate();
|
|
is03.seekg(20, std::ios_base::beg);
|
|
state02 = is03.rdstate();
|
|
pos05 = is03.tellg();
|
|
VERIFY( pos05 == pos06 ); // as only out buffer
|
|
VERIFY( state01 == state02 );
|
|
pos06 = is03.tellg();
|
|
VERIFY( pos05 == pos06 );
|
|
|
|
#ifdef DEBUG_ASSERT
|
|
assert(test);
|
|
#endif
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test01();
|
|
|
|
test02();
|
|
test03();
|
|
|
|
test04();
|
|
test05();
|
|
return 0;
|
|
}
|
|
|
|
|