comphelper/test/uno_iterators/uno_iterators.cxx

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  29
  30 #include <algorithm>
  31 #include <comphelper/stlunosequence.hxx>
  32 #include <com/sun/star/uno/Sequence.hxx>
  33 #include <iostream>
  34 #include <list>
  35 #include <rtl/textenc.h>
  36 #include <rtl/ustrbuf.hxx>
  37 #include <rtl/ustring.hxx>
  38 #include <vector>
  39
  40 using namespace ::comphelper;
  41 using namespace ::com::sun::star::uno;
  42 using namespace ::rtl;
  43 using namespace ::std;
  44
  45 // some helpers for testing (imperative)
  46 void fill_testdata(Sequence<OUString>& seq)
  47 {
  48     OUStringBuffer buf;
  49     for(sal_Int32 i=0; i<seq.getLength(); i++)
  50     {
  51         buf.appendAscii("Sampletext ");
  52         buf.append(i);
  53         seq[i] = buf.makeStringAndClear();
  54     }
  55 }
  56
  57 void print_oustring(const OUString& ustr)
  58 { cout << OUStringToOString(ustr, RTL_TEXTENCODING_ASCII_US).getStr() << endl; }
  59
  60 void print_sequence(const Sequence<OUString>& seq)
  61 {
  62     cout << "Sequence of " << seq.getLength() << " OUStrings: " << endl;
  63     for(sal_Int32 i=0; i<seq.getLength(); i++)
  64         print_oustring(seq[i]);
  65     cout << endl;
  66 }
  67
  68 // some helpers for testing (functional)
  69 class TestdataGenerator
  70 {
  71     public:
  72         TestdataGenerator() : m_Index(0) {};
  73         OUString operator()() { return m_Buf.appendAscii("Sampletext ").append(m_Index++).makeStringAndClear(); };
  74         OUStringBuffer m_Buf;
  75         sal_Int32 m_Index;
  76 };
  77
  78 void fill_testdata_stl(StlUnoSequence<OUString>& stl_seq)
  79 {
  80     generate(stl_seq.begin(), stl_seq.end(), TestdataGenerator());
  81 }
  82
  83 void print_sequence_stl(const StlUnoSequence<OUString>& stl_seq)
  84 {
  85     cout << "Sequence of " << stl_seq.size() << " OUStrings: " << endl;
  86     for_each(stl_seq.begin(), stl_seq.end(), &print_oustring);
  87     cout << endl;
  88 }
  89
  90
  91 // code samples
  92
  93 // imperative loops (just to show they work, using for_each would be better most of the time
  94 void classic_loops()
  95 {
  96     Sequence<OUString> s(10);
  97     fill_testdata(s);
  98     StlUnoSequence<OUString>::iterator stl_s_it;
  99
 100     cout << "for iteration" << endl;
 101     for(stl_s_it = stl_begin(s); stl_s_it != stl_end(s); stl_s_it++)
 102         cout << OUStringToOString(*stl_s_it, RTL_TEXTENCODING_ASCII_US).getStr() << endl;
 103
 104     cout << "reverse for iteration" << endl;
 105     for(stl_s_it = stl_end(s); stl_s_it != stl_begin(s); stl_s_it--)
 106         cout << OUStringToOString(*(stl_s_it-1), RTL_TEXTENCODING_ASCII_US).getStr() << endl;
 107
 108     cout << "skipping for iteration" << endl;
 109     for(stl_s_it = stl_begin(s); stl_s_it != stl_end(s); stl_s_it+=2)
 110         cout << OUStringToOString(*stl_s_it, RTL_TEXTENCODING_ASCII_US).getStr() << endl;
 111
 112     cout << "skipping reverse for iteration" << endl;
 113     for(stl_s_it = stl_end(s); stl_s_it != stl_begin(s); stl_s_it-=2)
 114         std::cout << OUStringToOString(*(stl_s_it-1), RTL_TEXTENCODING_ASCII_US).getStr() << endl;
 115 }
 116
 117 void stl_algos()
 118 {
 119     Sequence<OUString> s(10);
 120     fill_testdata(s);
 121
 122     random_shuffle(stl_begin(s), stl_end(s));
 123     cout << "shuffed" << std::endl;
 124     print_sequence(s);
 125
 126     sort(stl_begin(s), stl_end(s));
 127     cout << "sorted" << std::endl;
 128     print_sequence(s);
 129 }
 130
 131 void stl_conversions()
 132 {
 133     Sequence<OUString> s(10);
 134     fill_testdata(s);
 135     StlUnoSequence<OUString> stl_s = StlUnoSequence<OUString>::createInstance(s);
 136
 137     // convert to stl::vector, modify in vector, copy back, print
 138     cout << "vector conversion" << endl;
 139     vector<OUString> vec(stl_s.begin(), stl_s.end());
 140     vec[2] = OUString::createFromAscii("changed in vector");
 141     copy(vec.begin(), vec.end(), stl_s.begin());
 142     print_sequence(s);
 143
 144     // convert to stl::list, modify in list, copy back, print
 145     cout << "list conversion" << endl;
 146     list<OUString> l(stl_s.begin(), stl_s.end());
 147     l.pop_back();
 148     l.push_back(OUString::createFromAscii("changed in list"));
 149     copy(l.begin(), l.end(), stl_s.begin());
 150     print_sequence(s);
 151 }
 152
 153 // inserts the second half of the second sequence after the first element of the first sequence
 154 void stl_inserting()
 155 {
 156     Sequence<OUString> s1(10);
 157     Sequence<OUString> s2(10);
 158     Sequence<OUString> result(15);
 159     StlUnoSequence<OUString> stl_s1 = StlUnoSequence<OUString>::createInstance(s1);
 160     StlUnoSequence<OUString> stl_s2 = StlUnoSequence<OUString>::createInstance(s2);
 161     StlUnoSequence<OUString> stl_result = StlUnoSequence<OUString>::createInstance(result);
 162     fill_testdata(s1);
 163     fill_testdata(s2);
 164
 165     list<OUString> temp(stl_s1.begin(), stl_s1.end());
 166     copy(stl_s2.begin()+5, stl_s2.end(), insert_iterator<list<OUString> >(temp, ++temp.begin()));
 167     copy(temp.begin(), temp.end(), stl_result.begin());
 168     print_sequence(result);
 169 }
 170
 171 void stl_compare()
 172 {
 173     Sequence<OUString> s1(10);
 174     Sequence<OUString> s2(10);
 175     StlUnoSequence<OUString> stl_s1 = StlUnoSequence<OUString>::createInstance(s1);
 176     StlUnoSequence<OUString> stl_s2 = StlUnoSequence<OUString>::createInstance(s2);
 177     if (stl_s1 == stl_s2)
 178         cout << "sequences are equal." << endl;
 179     s2[9] = OUString::createFromAscii("ZZZZZ");
 180     if(stl_s1 < stl_s2)
 181         cout << "first sequence is smaller." << endl;
 182 }
 183
 184 void stl_const_sequence()
 185 {
 186     const Sequence<OUString> s(10);
 187     for(StlUnoSequence<OUString>::const_iterator stl_s_it = stl_begin(s); stl_s_it != stl_end(s); stl_s_it++)
 188         cout << OUStringToOString(*stl_s_it, RTL_TEXTENCODING_ASCII_US).getStr() << endl;
 189 }
 190
 191 void stl_helpers()
 192 {
 193     Sequence<OUString> s(10);
 194     StlUnoSequence<OUString> stl_s = StlUnoSequence<OUString>::createInstance(s);
 195     fill_testdata_stl(stl_s);
 196     print_sequence_stl(stl_s);
 197 }
 198
 199 int main()
 200 {
 201     cout << "--- CLASSIC LOOPS" << endl;
 202     classic_loops();
 203
 204     cout << "--- SOME STL ALGORITHMS" << endl;
 205     stl_algos();
 206
 207     cout << "--- SOME STL CONVERSIONS" << endl;
 208     stl_conversions();
 209
 210     cout << "--- INSERTING IN SEQUENCE" << endl;
 211     stl_inserting();
 212
 213     cout << "--- COMPARING" << endl;
 214     stl_compare();
 215
 216     cout << "--- CONST SEQUENCE" << endl;
 217     stl_const_sequence();
 218
 219     cout << "--- HELPERS IN STL-STYLE" << endl;
 220     stl_helpers();
 221 }