455 lines
15 KiB
C++
455 lines
15 KiB
C++
// 981208 bkoz test functionality of basic_stringbuf for char_type == char
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// Copyright (C) 1997-2001 Free Software Foundation, Inc.
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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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#include <sstream>
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#include <testsuite_hooks.h>
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std::string str_01("mykonos. . . or what?");
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std::string str_02("paris, or sainte-maxime?");
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std::string str_03;
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std::stringbuf strb_01(str_01);
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std::stringbuf strb_02(str_02, std::ios_base::in);
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std::stringbuf strb_03(str_03, std::ios_base::out);
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// test the underlying allocator
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bool test01() {
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bool test = false;
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std::allocator<char> alloc_01;
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std::allocator<char>::size_type size_01 = alloc_01.max_size();
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std::allocator<char>::pointer p_01 = alloc_01.allocate(32);
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return true;
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}
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// test the streambuf/stringbuf locale settings
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bool test02() {
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std::locale loc_tmp;
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loc_tmp = strb_01.getloc();
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strb_01.pubimbue(loc_tmp); //This should initialize _M_init to true
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strb_01.getloc(); //This should just return _M_locale
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return true;
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}
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// test member functions
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bool test03() {
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bool test = true;
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//stringbuf::str()
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VERIFY( strb_01.str() == str_01 );
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VERIFY( strb_02.str() == str_02 );
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VERIFY( strb_03.str() == str_03 );
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//stringbuf::str(string&)
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strb_03.str("none of the above, go to the oberoi in cairo, egypt.");
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strb_03.str(str_01);
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std::streamsize d1 = strb_01.in_avail();
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std::streamsize d2 = strb_03.in_avail();
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VERIFY( d1 ); // non-zero
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VERIFY( !d2 ); // zero, cuz ios_base::out
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VERIFY( d1 != d2 ); //these should be the same
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VERIFY( str_01.length() == d1 );
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VERIFY( strb_01.str() == strb_03.str() ); //ditto
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// stringbuf::str(string&) and stringbuf::stringbuf(string&), where the
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// string in question contains embedded NUL characters. Note that in this
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// embedded-NUL situation, the size must be passed to the string ctor.
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std::string str_nulls ("eschew \0 obfuscation", 20); // tested in 21_strings
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std::stringbuf strb_normal (str_01);
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std::stringbuf strb_nulls (str_nulls);
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strb_normal.str(str_nulls); // tried using 'strb_01' rather than declaring
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// another variable, but then test04 broke!
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VERIFY( strb_nulls.in_avail() == str_nulls.size() );
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VERIFY( strb_nulls.str().size() == 20 );
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VERIFY( strb_normal.in_avail() == str_nulls.size() );
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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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// test overloaded virtual functions
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bool test04() {
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bool test = true;
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std::string str_tmp;
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std::stringbuf strb_tmp;
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std::streamsize strmsz_1, strmsz_2;
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std::streamoff strmof_1(-1), strmof_2;
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typedef std::stringbuf::int_type int_type;
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typedef std::stringbuf::traits_type traits_type;
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typedef std::stringbuf::pos_type pos_type;
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typedef std::stringbuf::off_type off_type;
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// GET
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// int in_avail()
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strmof_1 = strb_01.in_avail();
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strmof_2 = strb_02.in_avail();
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VERIFY( strmof_1 != strmof_2 );
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VERIFY( strmof_1 == str_01.length() );
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VERIFY( strmof_2 == str_02.length() );
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strmof_1 = strb_03.in_avail();
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VERIFY( strmof_1 == 0 ); // zero cuz write-only, or eof()? zero, from showmany
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// int_type sbumpc()
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// if read_cur not avail, return uflow(), else return *read_cur & increment
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int_type c1 = strb_01.sbumpc();
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int_type c2 = strb_02.sbumpc();
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VERIFY( c1 != c2 );
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VERIFY( c1 == str_01[0] );
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VERIFY( c2 == str_02[0] ); //should equal first letter at this point
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int_type c3 = strb_01.sbumpc();
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int_type c4 = strb_02.sbumpc();
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VERIFY( c1 != c2 );
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VERIFY( c1 != c3 );
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VERIFY( c2 != c4 );
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int_type c5 = strb_03.sbumpc();
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VERIFY( c5 == traits_type::eof() );
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// int_type sgetc()
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// if read_cur not avail, return uflow(), else return *read_cur
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int_type c6 = strb_01.sgetc();
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int_type c7 = strb_02.sgetc();
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VERIFY( c6 != c3 );
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VERIFY( c7 != c4 );
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int_type c8 = strb_01.sgetc();
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int_type c9 = strb_02.sgetc();
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VERIFY( c6 == c8 );
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VERIFY( c7 == c9 );
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c5 = strb_03.sgetc();
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VERIFY( c5 == traits_type::eof() );
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// int_type snextc()
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// calls sbumpc and if sbumpc != eof, return sgetc
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c6 = strb_01.snextc();
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c7 = strb_02.snextc();
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VERIFY( c6 != c8 );
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VERIFY( c7 != c9 );
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VERIFY( c6 == str_01[3] );
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VERIFY( c7 == str_02[3] ); //should equal fourth letter at this point
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c5 = strb_03.snextc();
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VERIFY( c5 == traits_type::eof() );
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// int showmanyc
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// streamsize sgetn(char_type *s, streamsize n)
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// streamsize xsgetn(char_type *s, streamsize n)
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// assign up to n chars to s from input sequence, indexing in_cur as
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// approp and returning the number of chars assigned
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strmsz_1 = strb_01.in_avail();
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strmsz_2 = strb_02.in_avail();
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test = strmsz_1 != strmsz_2;
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VERIFY( strmsz_1 != str_01.length() );
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VERIFY( strmsz_2 != str_02.length() ); //because now we've moved into string
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char carray1[11] = "";
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strmsz_1 = strb_01.sgetn(carray1, 10);
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char carray2[20] = "";
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strmsz_2 = strb_02.sgetn(carray2, 10);
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VERIFY( strmsz_1 == strmsz_2 );
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VERIFY( strmsz_1 == 10 );
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c1 = strb_01.sgetc();
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c2 = strb_02.sgetc();
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VERIFY( c6 == c1 ); //just by co-incidence both o's
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VERIFY( c7 != c2 ); // n != i
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VERIFY( c1 == str_01[13] );
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VERIFY( c2 == str_02[13] ); //should equal fourteenth letter at this point
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strmsz_1 = strb_03.sgetn(carray1, 10);
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VERIFY( !strmsz_1 ); //zero
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strmsz_1 = strb_02.in_avail();
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strmsz_2 = strb_02.sgetn(carray2, strmsz_1 + 5);
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VERIFY( strmsz_1 == strmsz_2 ); //write off the end
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c4 = strb_02.sgetc(); // should be EOF
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VERIFY( c4 == traits_type::eof() );
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// PUT
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// int_type sputc(char_type c)
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// if out_cur not avail, return overflow. Else, stores c at out_cur,
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// increments out_cur, and returns c as int_type
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strb_03.str(str_01); //reset
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std::string::size_type sz1 = strb_03.str().length();
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c1 = strb_03.sputc('a');
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std::string::size_type sz2 = strb_03.str().length();
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VERIFY( sz1 == sz2 ); //cuz inserting at out_cur, which is at beg to start
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c2 = strb_03.sputc('b');
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VERIFY( c1 != c2 );
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VERIFY( strb_03.str() != str_01 );
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c3 = strb_02.sputc('a'); // should be EOF because this is read-only
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VERIFY( c3 == traits_type::eof() );
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// streamsize sputn(const char_typs* s, streamsize n)
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// write up to n chars to out_cur from s, returning number assigned
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// NB *sputn will happily put '\0' into your stream if you give it a chance*
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str_tmp = strb_03.str();
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sz1 = str_tmp.length();
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strmsz_1 = strb_03.sputn("racadabras", 10);//"abracadabras or what?"
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sz2 = strb_03.str().length();
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VERIFY( sz1 == sz2 ); //shouldn't have changed length
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VERIFY( strmsz_1 == 10 );
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VERIFY( str_tmp != strb_03.str() );
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strmsz_2 = strb_03.sputn(", i wanna reach out and", 10);
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VERIFY( strmsz_1 == strmsz_2 ); // should re-allocate, copy 10 chars.
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VERIFY( strmsz_1 == 10 );
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VERIFY( strmsz_2 == 10 );
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sz2 = strb_03.str().length();
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VERIFY( sz1 != sz2 ); // need to change length
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VERIFY( str_tmp != strb_03.str() );
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str_tmp = strb_02.str();
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strmsz_1 = strb_02.sputn("racadabra", 10);
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VERIFY( strmsz_1 == 0 );
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VERIFY( str_tmp == strb_02.str() );
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// PUTBACK
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// int_type pbfail(int_type c)
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// called when gptr() null, gptr() == eback(), or traits::eq(*gptr, c) false
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// "pending sequence" is:
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// 1) everything as defined in underflow
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// 2) + if (traits::eq_int_type(c, traits::eof()), then input
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// sequence is backed up one char before the pending sequence is
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// determined.
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// 3) + if (not 2) then c is prepended. Left unspecified is
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// whether the input sequence is backedup or modified in any way
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// returns traits::eof() for failure, unspecified other value for success
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// int_type sputbackc(char_type c)
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// if in_cur not avail || ! traits::eq(c, gptr() [-1]), return pbfail
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// otherwise decrements in_cur and returns *gptr()
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strmsz_1 = strb_01.in_avail();
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str_tmp = strb_01.str();
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c1 = strb_01.sgetc(); //"mykonos. . . 'o'r what?"
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c2 = strb_01.sputbackc('z');//"mykonos. . .zor what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 == c2 );
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VERIFY( strb_01.str() == std::string("mykonos. . .zor what?") );
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VERIFY( str_tmp.size() == strb_01.str().size() );
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//test for _in_cur == _in_beg
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strb_01.str(str_tmp);
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strmsz_1 = strb_01.in_avail();
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c1 = strb_01.sgetc(); //"'m'ykonos. . . or what?"
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c2 = strb_01.sputbackc('z');//"mykonos. . . or what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 != c2 );
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VERIFY( c1 == c3 );
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VERIFY( c2 == traits_type::eof() );
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VERIFY( strb_01.str() == str_tmp );
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VERIFY( str_tmp.size() == strb_01.str().size() );
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// test for replacing char with identical one
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strb_01.str(str_01); //reset
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strmsz_1 = strb_01.in_avail();
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strb_01.sbumpc();
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strb_01.sbumpc();
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c1 = strb_01.sgetc(); //"my'k'onos. . . or what?"
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c2 = strb_01.sputbackc('y');//"mykonos. . . or what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 == c2 );
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VERIFY( c1 != c3 );
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VERIFY( strb_01.str() == str_01 );
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VERIFY( str_01.size() == strb_01.str().size() );
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//test for ios_base::out
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strmsz_2 = strb_03.in_avail();
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c4 = strb_03.sputbackc('x');
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VERIFY( c4 == traits_type::eof() );
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// int_type sungetc()
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// if in_cur not avail, return pbackfail(), else decrement and
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// return to_int_type(*gptr())
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for (int i = 0; i<12; ++i)
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strb_01.sbumpc();
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strmsz_1 = strb_01.in_avail();
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str_tmp = strb_01.str();
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c1 = strb_01.sgetc(); //"mykonos. . . 'o'r what?"
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c2 = strb_01.sungetc();//"mykonos. . . or what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 == c2 );
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VERIFY( c1 != c3 );
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VERIFY( c2 == ' ' );
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VERIFY( strb_01.str() == str_01 );
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VERIFY( str_01.size() == strb_01.str().size() );
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//test for _in_cur == _in_beg
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strb_01.str(str_tmp);
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strmsz_1 = strb_01.in_avail();
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c1 = strb_01.sgetc(); //"'m'ykonos. . . or what?"
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c2 = strb_01.sungetc();//"mykonos. . . or what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 != c2 );
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VERIFY( c1 == c3 );
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VERIFY( c2 == traits_type::eof() );
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VERIFY( strb_01.str() == str_01 );
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VERIFY( str_01.size() == strb_01.str().size() );
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// test for replacing char with identical one
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strb_01.str(str_01); //reset
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strmsz_1 = strb_01.in_avail();
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strb_01.sbumpc();
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strb_01.sbumpc();
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c1 = strb_01.sgetc(); //"my'k'onos. . . or what?"
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c2 = strb_01.sungetc();//"mykonos. . . or what?"
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( c3 == c2 );
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VERIFY( c1 != c3 );
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VERIFY( strb_01.str() == str_01 );
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VERIFY( str_01.size() == strb_01.str().size() );
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//test for ios_base::out
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strmsz_2 = strb_03.in_avail();
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c4 = strb_03.sungetc();
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VERIFY( c4 == traits_type::eof() );
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// BUFFER MANAGEMENT & POSITIONING
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// sync
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// pubsync
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strb_01.pubsync();
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strb_02.pubsync();
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strb_03.pubsync();
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// setbuf
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// pubsetbuf(char_type* s, streamsize n)
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str_tmp = std::string("naaaah, go to cebu");
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strb_01.pubsetbuf(const_cast<char*> (str_tmp.c_str()), str_tmp.size());
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VERIFY( strb_01.str() == str_tmp );
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strb_01.pubsetbuf(0,0);
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VERIFY( strb_01.str() == str_tmp );
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// seekoff
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// pubseekoff(off_type off, ios_base::seekdir way, ios_base::openmode which)
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// alters the stream position to off
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pos_type pt_1(off_type(-1));
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pos_type pt_2(off_type(0));
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off_type off_1 = 0;
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off_type off_2 = 0;
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strb_01.str(str_01); //in|out ("mykonos. . . or what?");
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strb_02.str(str_02); //in ("paris, or sainte-maxime?");
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strb_03.str(str_03); //out ("")
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//IN|OUT
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//beg
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pt_1 = strb_01.pubseekoff(2, std::ios_base::beg);
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off_1 = pt_1;
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VERIFY( off_1 >= 0 );
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c1 = strb_01.snextc(); //current in pointer +1
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VERIFY( c1 == 'o' );
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c2 = strb_01.sputc('x'); //test current out pointer
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str_tmp = std::string("myxonos. . . or what?");
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VERIFY( strb_01.str() == str_tmp );
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//cur
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pt_1 = strb_01.pubseekoff(2, std::ios_base::cur);
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off_1 = pt_1;
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VERIFY( off_1 == -1 ); // can't seekoff for in and out + cur in sstreams
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pt_1 = strb_01.pubseekoff(2, std::ios_base::cur, std::ios_base::in);
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off_1 = pt_1;
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pt_2 = strb_01.pubseekoff(2, std::ios_base::cur, std::ios_base::in);
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off_2 = pt_2;
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VERIFY( off_2 == off_1 + 2 );
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c1 = strb_01.snextc(); //current in pointer + 1
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VERIFY( c1 == ' ' );
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c2 = strb_01.sputc('x'); //test current out pointer
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str_tmp = std::string("myxxnos. . . or what?");
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VERIFY( strb_01.str() == str_tmp );
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//end
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pt_2 = strb_01.pubseekoff(2, std::ios_base::end);
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off_1 = pt_2;
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VERIFY( off_1 == -1 ); // not a valid position
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VERIFY( strb_01.str() == str_tmp );
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// end part two (from the filebuf tests)
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strb_01.pubseekoff(0, std::ios_base::end);
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strmsz_1 = strb_01.in_avail(); // 0 cuz at the end
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c1 = strb_01.sgetc();
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c2 = strb_01.sungetc();
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strmsz_2 = strb_01.in_avail(); // 1
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c3 = strb_01.sgetc();
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VERIFY( c1 != c2 );
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VERIFY( strmsz_2 != strmsz_1 );
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VERIFY( strmsz_2 == 1 );
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// end part three
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strmsz_1 = strb_01.str().size();
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strmsz_2 = strb_01.sputn(" ravi shankar meets carlos santana in LoHa", 90);
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strb_01.pubseekoff(0, std::ios_base::end);
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strb_01.sputc('<');
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str_tmp = strb_01.str();
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VERIFY( str_tmp.size() == strmsz_1 + strmsz_2 + 1 );
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// IN
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// OUT
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// seekpos
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// pubseekpos(pos_type sp, ios_base::openmode)
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// alters the stream position to sp
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strb_01.str(str_01); //in|out ("mykonos. . . or what?");
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strb_02.str(str_02); //in ("paris, or sainte-maxime?");
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strb_03.str(str_03); //out ("")
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//IN|OUT
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//beg
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pt_1 = strb_01.pubseekoff(2, std::ios_base::beg);
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off_1 = pt_1;
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|
VERIFY( off_1 >= 0 );
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|
pt_1 = strb_01.pubseekoff(0, std::ios_base::cur, std::ios_base::out);
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|
off_1 = pt_1;
|
|
c1 = strb_01.snextc(); //current in pointer +1
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|
VERIFY( c1 == 'o' );
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|
c2 = strb_01.sputc('x'); //test current out pointer
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|
str_tmp = std::string("myxonos. . . or what?");
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|
VERIFY( strb_01.str() == str_tmp );
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|
strb_01.pubsync(); //resets pointers
|
|
pt_2 = strb_01.pubseekpos(pt_1, std::ios_base::in|std::ios_base::out);
|
|
off_2 = pt_2;
|
|
VERIFY( off_1 == off_2 );
|
|
c3 = strb_01.snextc(); //current in pointer +1
|
|
VERIFY( c1 == c3 );
|
|
c2 = strb_01.sputc('x'); //test current out pointer
|
|
str_tmp = std::string("myxonos. . . or what?");
|
|
VERIFY( strb_01.str() == str_tmp );
|
|
|
|
// VIRTUALS (indirectly tested)
|
|
// underflow
|
|
// if read position avail, returns *gptr()
|
|
|
|
// pbackfail(int_type c)
|
|
// put c back into input sequence
|
|
|
|
// overflow
|
|
// appends c to output seq
|
|
|
|
#ifdef DEBUG_ASSERT
|
|
assert(test);
|
|
#endif
|
|
|
|
return test;
|
|
}
|
|
|
|
|
|
int main() {
|
|
|
|
test01();
|
|
test02();
|
|
test03();
|
|
test04();
|
|
|
|
return 0;
|
|
}
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|
|
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|
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|
|
// more candy!!!
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