libstdc++-v3/testsuite/ext/rope/3.cc

   1 // Copyright (C) 2004-2019 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // rope (SGI extension)
  19
  20 #include <ext/rope>
  21 #include <testsuite_hooks.h>
  22
  23 const char base[] =
  24 "Happy families are all alike; every unhappy family is unhappy in   \
  25 its own way.                                                        \
  26                                                                     \
  27 Everything was in confusion in the Oblonskys' house.  The wife      \
  28 had discovered that the husband was carrying on an intrigue with    \
  29 a French girl, who had been a governess in their family, and she    \
  30 had announced to her husband that she could not go on living in     \
  31 the same house with him.  This position of affairs had now lasted   \
  32 three days, and not only the husband and wife themselves, but all   \
  33 the members of their family and household, were painfully           \
  34 conscious of it.  Every person in the house felt that there was     \
  35 so sense in their living together, and that the stray people        \
  36 brought together by chance in any inn had more in common with one   \
  37 another than they, the members of the family and household of the   \
  38 Oblonskys.  The wife did not leave her own room, the husband had    \
  39 not been at home for three days.  The children ran wild all over    \
  40 the house; the English governess quarreled with the housekeeper,    \
  41 and wrote to a friend asking her to look out for a new situation    \
  42 for her; the man-cook had walked off the day before just at         \
  43 dinner time; the kitchen-maid, and the coachman had given           \
  44 warning."
  45   ;
  46
  47 int baselen = sizeof(base) - 1;
  48
  49 template<class StringType>
  50 StringType
  51 multiply(const StringType& s, int n)
  52 {
  53   StringType result;
  54   while (n > 0)
  55     {
  56       result += s;
  57       --n;
  58     }
  59   return result;
  60 }
  61
  62 template <class StringType>
  63 StringType
  64 mung_substrings(const StringType& s, int len, int n, int skip)
  65 {
  66   StringType result;
  67   int start = 0;
  68   while (n > 0)
  69     {
  70       StringType tmp = s.substr (start, len);
  71       result += tmp;
  72       --n;
  73       start += skip;
  74     }
  75   return result;
  76 }
  77
  78 void
  79 test01()
  80 {
  81   using namespace __gnu_cxx;
  82
  83   crope r;
  84   r = multiply(crope(base), 100000);
  85
  86   crope r1;
  87   r1 = mung_substrings(r, 100000, 500, 73);
  88
  89   VERIFY( r1.size() == 50000000 );
  90   VERIFY( r1.substr(88888, 6)[0] == 's' );
  91   VERIFY( r1.substr(88888, 6)[2] == 'h' );
  92 }
  93
  94 int main()
  95 {
  96   test01();
  97   return 0;
  98 }