src/Thesaurus.C

   1 /**
   2  * \file Thesaurus.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "Thesaurus.h"
  14
  15 #include "support/lstrings.h"
  16
  17 #include <algorithm>
  18
  19
  20 namespace lyx {
  21
  22 #ifdef HAVE_LIBAIKSAURUS
  23
  24 using std::sort;
  25 using std::string;
  26
  27
  28 Thesaurus::Thesaurus()
  29         : aik_(new Aiksaurus)
  30 {}
  31
  32
  33 Thesaurus::~Thesaurus()
  34 {
  35         delete aik_;
  36 }
  37
  38
  39 Thesaurus::Meanings Thesaurus::lookup(docstring const & t)
  40 {
  41         Meanings meanings;
  42
  43         // aiksaurus is for english text only, therefore it does not work
  44         // with non-ascii strings.
  45         // The interface of the Thesaurus class uses docstring because a
  46         // non-english thesaurus is possible in theory.
  47         if (!support::isAscii(t))
  48                 // to_ascii() would assert
  49                 return meanings;
  50
  51         string const text = to_ascii(t);
  52         if (!aik_->find(text.c_str()))
  53                 return meanings;
  54
  55         // weird api, but ...
  56
  57         int prev_meaning = -1;
  58         int cur_meaning;
  59         docstring meaning;
  60
  61         // correct, returns "" at the end
  62         string ret = aik_->next(cur_meaning);
  63
  64         while (!ret.empty()) {
  65                 if (cur_meaning != prev_meaning) {
  66                         meaning = from_ascii(ret);
  67                         ret = aik_->next(cur_meaning);
  68                         prev_meaning = cur_meaning;
  69                 } else {
  70                         if (ret != text)
  71                                 meanings[meaning].push_back(from_ascii(ret));
  72                 }
  73
  74                 ret = aik_->next(cur_meaning);
  75         }
  76
  77         for (Meanings::iterator it = meanings.begin();
  78              it != meanings.end(); ++it)
  79                 sort(it->second.begin(), it->second.end());
  80
  81         return meanings;
  82 }
  83
  84 #else
  85
  86 Thesaurus::Thesaurus()
  87 {
  88 }
  89
  90
  91 Thesaurus::~Thesaurus()
  92 {
  93 }
  94
  95
  96 Thesaurus::Meanings Thesaurus::lookup(docstring const &)
  97 {
  98         return Meanings();
  99 }
 100
 101 #endif // HAVE_LIBAIKSAURUS
 102
 103 // Global instance
 104 Thesaurus thesaurus;
 105
 106
 107 } // namespace lyx