src/ASpell.cpp

   1 /**
   2  * \file ASpell.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Kevin Atkinson
   7  * \author John Levon
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "support/debug.h"
  15
  16 #include <aspell.h>
  17
  18 #include "ASpell_local.h"
  19 #include "LyXRC.h"
  20 #include "WordLangTuple.h"
  21
  22 #include "support/lassert.h"
  23
  24 using namespace std;
  25
  26 namespace lyx {
  27
  28 ASpell::ASpell(BufferParams const &, string const & lang)
  29         : els(0), spell_error_object(0)
  30 {
  31         addSpeller(lang);
  32 }
  33
  34
  35 ASpell::~ASpell()
  36 {
  37         if (spell_error_object) {
  38                 delete_aspell_can_have_error(spell_error_object);
  39                 spell_error_object = 0;
  40         }
  41
  42         if (els)
  43                 delete_aspell_string_enumeration(els);
  44
  45         Spellers::iterator it = spellers_.begin();
  46         Spellers::iterator end = spellers_.end();
  47
  48         for (; it != end; ++it) {
  49                 aspell_speller_save_all_word_lists(it->second.speller);
  50                 delete_aspell_speller(it->second.speller);
  51                 delete_aspell_config(it->second.config);
  52         }
  53 }
  54
  55
  56 void ASpell::addSpeller(string const & lang)
  57 {
  58         AspellConfig * config = new_aspell_config();
  59         // FIXME The aspell documentation says to use "lang"
  60         aspell_config_replace(config, "language-tag", lang.c_str());
  61         // Set the encoding to utf-8.
  62         // aspell does also understand "ucs-4", so we would not need a
  63         // conversion in theory, but if this is used it expects all
  64         // char const * arguments to be a cast from  uint const *, and it
  65         // seems that this uint is not compatible with our char_type on some
  66         // platforms (cygwin, OS X). Therefore we use utf-8, that does
  67         // always work.
  68         aspell_config_replace(config, "encoding", "utf-8");
  69         if (lyxrc.spellchecker_accept_compound)
  70                 // Consider run-together words as legal compounds
  71                 aspell_config_replace(config, "run-together", "true");
  72         else
  73                 // Report run-together words as errors
  74                 aspell_config_replace(config, "run-together", "false");
  75         AspellCanHaveError * err = new_aspell_speller(config);
  76         if (spell_error_object)
  77                 delete_aspell_can_have_error(spell_error_object);
  78         spell_error_object = 0;
  79
  80         if (aspell_error_number(err) == 0) {
  81                 Speller m;
  82                 m.speller = to_aspell_speller(err);
  83                 m.config = config;
  84                 spellers_[lang] = m;
  85         } else {
  86                 spell_error_object = err;
  87         }
  88 }
  89
  90
  91 ASpell::Result ASpell::check(WordLangTuple const & word)
  92 {
  93         Result res = UNKNOWN_WORD;
  94
  95         Spellers::iterator it = spellers_.find(word.lang_code());
  96         if (it == spellers_.end()) {
  97                 addSpeller(word.lang_code());
  98                 it = spellers_.find(word.lang_code());
  99                 // FIXME
 100                 if (it == spellers_.end())
 101                         return res;
 102         }
 103
 104         AspellSpeller * m = it->second.speller;
 105
 106         int const word_ok = aspell_speller_check(m, to_utf8(word.word()).c_str(), -1);
 107         LASSERT(word_ok != -1, /**/);
 108
 109         if (word_ok)
 110                 return OK;
 111
 112         AspellWordList const * sugs =
 113                 aspell_speller_suggest(m, to_utf8(word.word()).c_str(), -1);
 114         LASSERT(sugs != 0, /**/);
 115         els = aspell_word_list_elements(sugs);
 116         if (aspell_word_list_empty(sugs))
 117                 res = UNKNOWN_WORD;
 118         else
 119                 res = SUGGESTED_WORDS;
 120
 121         return res;
 122 }
 123
 124
 125 void ASpell::insert(WordLangTuple const & word)
 126 {
 127         Spellers::iterator it = spellers_.find(word.lang_code());
 128         if (it != spellers_.end())
 129                 aspell_speller_add_to_personal(it->second.speller, to_utf8(word.word()).c_str(), -1);
 130 }
 131
 132
 133 void ASpell::accept(WordLangTuple const & word)
 134 {
 135         Spellers::iterator it = spellers_.find(word.lang_code());
 136         if (it != spellers_.end())
 137                 aspell_speller_add_to_session(it->second.speller, to_utf8(word.word()).c_str(), -1);
 138 }
 139
 140
 141 docstring const ASpell::nextMiss()
 142 {
 143         char const * str = 0;
 144
 145         if (els)
 146                 str = aspell_string_enumeration_next(els);
 147
 148         return (str ? from_utf8(str) : docstring());
 149 }
 150
 151
 152 docstring const ASpell::error()
 153 {
 154         char const * err = 0;
 155
 156         if (spell_error_object && aspell_error_number(spell_error_object) != 0)
 157                 err = aspell_error_message(spell_error_object);
 158
 159         // FIXME UNICODE: err is not in UTF8, but probably the locale encoding
 160         return (err ? from_utf8(err) : docstring());
 161 }
 162
 163
 164 } // namespace lyx