libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/1.cc

   1 // { dg-require-namedlocale "se_NO.UTF-8" }
   2
   3 // 2003-09-08  Petur Runolfsson  <peturr02@ru.is>
   4
   5 // Copyright (C) 2003-2024 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 27.8.1.4 Overridden virtual functions
  23
  24 #include <fstream>
  25 #include <locale>
  26 #include <cstdio>
  27 #include <testsuite_hooks.h>
  28
  29 // Check that basic_filebuf::seekoff handles UTF-8 when open for input.
  30 void test01()
  31 {
  32   using namespace std;
  33   typedef wfilebuf::pos_type pos_type;
  34   typedef wfilebuf::int_type int_type;
  35
  36   const char name[] = "tmp_seekoff-1.tst";
  37   const int_type eof = wfilebuf::traits_type::eof();
  38
  39   const char cstr[] =
  40     "\x1\x2\x3\x4\x5\x6\x7\x8\x9\xa\xb\xc\xd\xe\xf\x10\x11\x12\x13"
  41     "\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20!\"#$%&"
  42     "'()*+,-./0123456789:;<=>?@}~\x7f\xc2\x80\xc2\x81\xc2\x82\xc2"
  43     "\x83\xc2\x84\xc2\x85\xc2\x86\xc2\x87\xc2\x88\xc2\x89\xc2\x8a"
  44     "\xc2\x8b\xc2\x8c\xc2\x8d\xc2\x8e\xc2\x8f\xc2\x90\xc2\x91\xc2"
  45     "\x92\xc2\x93\xc2\x94\xc2\x95\xc2\x96\xc2\x97\xc2\x98\xc2\x99"
  46     "\xc2\x9a\xc2\x9b\xc2\x9c\xc3\xba\xc3\xbb\xc3\xbc\xc3\xbd\xc3"
  47     "\xbe\xc3\xbf\xc4\x80\xc4\x81\xc4\x82\xc4\x83\xc4\x84\xc4\x85"
  48     "\xc4\x86\xc4\x87\xc4\x88\xc4\x89\xc4\x8a\xc4\x8b\xc4\x8c\xc4"
  49     "\x8d\xc4\x8e\xc4\x8f\xc4\x90\xc4\x91\xc4\x92\xc4\x93\xc4\x94"
  50     "\xc4\x95\xc4\x96\xc4\x97\xc4\x98\xc4\x99\xdf\xb8\xdf\xb9\xdf"
  51     "\xba\xdf\xbb\xdf\xbc\xdf\xbd\xdf\xbe\xdf\xbf\xe0\xa0\x80\xe0"
  52     "\xa0\x81\xe0\xa0\x82\xe0\xa0\x83\xe0\xa0\x84\xe0\xa0\x85\xe0"
  53     "\xa0\x86\xe0\xa0\x87\xe0\xa0\x88\xe0\xa0\x89\xe0\xa0\x8a\xe0"
  54     "\xa0\x8b\xe0\xa0\x8c\xe0\xa0\x8d\xe0\xa0\x8e\xe0\xa0\x8f\xe0"
  55     "\xa0\x90\xe0\xa0\x91\xe0\xa0\x92\xe0\xa0\x93\xe0\xa0\x94\xe0"
  56     "\xa0\x95\xe0\xa0\x96\xe0\xa0\x97\x1\x2\x4\x8\x10\x20@\xc2\x80"
  57     "\xc4\x80\xc8\x80\xd0\x80\xe0\xa0\x80\xe1\x80\x80\xe2\x80\x80"
  58     "\xe4\x80\x80\xe8\x80\x80\xf0\x90\x80\x80\xf0\xa0\x80\x80\xf1"
  59     "\x80\x80\x80\xf2\x80\x80\x80\xf4\x80\x80\x80";
  60
  61   const wchar_t wstr[] = {
  62     0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc,
  63     0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  64     0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, L'!',
  65     L'"', L'#', L'$', L'%', L'&', L'\'', L'(', L')', L'*', L'+',
  66     L',', L'-', L'.', L'/', L'0', L'1', L'2', L'3', L'4', L'5',
  67     L'6', L'7', L'8', L'9', L':', L';', L'<', L'=', L'>', L'?',
  68     L'@', L'}', L'~', 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85,
  69     0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
  70     0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99,
  71     0x9a, 0x9b, 0x9c, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x100,
  72     0x101, 0x102, 0x103, 0x104, 0x105, 0x106, 0x107, 0x108, 0x109,
  73     0x10a, 0x10b, 0x10c, 0x10d, 0x10e, 0x10f, 0x110, 0x111, 0x112,
  74     0x113, 0x114, 0x115, 0x116, 0x117, 0x118, 0x119, 0x7f8, 0x7f9,
  75     0x7fa, 0x7fb, 0x7fc, 0x7fd, 0x7fe, 0x7ff, 0x800, 0x801, 0x802,
  76     0x803, 0x804, 0x805, 0x806, 0x807, 0x808, 0x809, 0x80a, 0x80b,
  77     0x80c, 0x80d, 0x80e, 0x80f, 0x810, 0x811, 0x812, 0x813, 0x814,
  78     0x815, 0x816, 0x817, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, L'@',
  79     0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000, 0x8000,
  80     0x10000, 0x20000, 0x40000, 0x80000, 0x100000, 0x0
  81   };
  82
  83   const size_t clen = sizeof(cstr) / sizeof(cstr[0]);
  84   const size_t wlen = sizeof(wstr) / sizeof(wstr[0]);
  85
  86   const int loops = 2 * BUFSIZ / wlen;
  87   locale loc = locale("se_NO.UTF-8");
  88
  89   FILE* file = fopen(name, "w");
  90   for (int i = 0; i < loops; ++i)
  91     fwrite(cstr, 1, clen, file);
  92   fclose(file);
  93
  94   wfilebuf fb;
  95   fb.pubimbue(loc);
  96   fb.open(name, ios_base::in);
  97
  98   pos_type p1 = fb.pubseekoff(0, ios_base::cur);
  99   pos_type end = fb.pubseekoff(0, ios_base::end);
 100   pos_type beg = fb.pubseekoff(0, ios_base::beg);
 101   VERIFY( p1 == beg );
 102
 103   const size_t limit = wlen * loops;
 104   for (size_t index = 0; index < limit; ++index)
 105     {
 106       // Call seekoff at pseudo-random intervals.
 107       if (index % 5 == 0 || index % 7 == 0)
 108         {
 109           pos_type p2 = fb.pubseekoff(0, ios_base::cur);
 110           VERIFY( p2 != pos_type(-1) );
 111         }
 112       int_type c1 = fb.sbumpc();
 113       VERIFY( c1 != eof );
 114       VERIFY( static_cast<wchar_t>(c1) == wstr[index % wlen] );
 115     }
 116
 117   pos_type p3 = fb.pubseekoff(0, ios_base::cur);
 118   VERIFY( p3 == end );
 119
 120   int_type c2 = fb.sbumpc();
 121   VERIFY( c2 == eof );
 122
 123   fb.close();
 124 }
 125
 126 int main()
 127 {
 128   test01();
 129   return 0;
 130 }