src/trans_mgr.C

   1 /**
   2  * \file trans_mgr.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Matthias Ettrich
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "trans_mgr.h"
  15 #include "trans.h"
  16 #include "lyxtext.h"
  17 #include "debug.h"
  18 #include "insets/insetlatexaccent.h"
  19 #include "lyxrc.h"
  20 #include "support/lstrings.h"
  21
  22 using lyx::support::split;
  23
  24 using std::endl;
  25 using std::string;
  26 using std::pair;
  27
  28
  29 extern string const DoAccent(string const &, tex_accent);
  30 extern string const DoAccent(char, tex_accent);
  31
  32
  33 // TransFSMData
  34 TransFSMData::TransFSMData()
  35 {
  36         deadkey_ = deadkey2_ = 0;
  37         deadkey_info_.accent = deadkey2_info_.accent = TEX_NOACCENT;
  38 }
  39
  40
  41 // TransState
  42 char const TransState::TOKEN_SEP = 4;
  43
  44
  45 // TransInitState
  46 TransInitState::TransInitState()
  47 {
  48         init_state_ = this;
  49 }
  50
  51
  52 string const TransInitState::normalkey(char c)
  53 {
  54         string res;
  55         res = c;
  56         return res;
  57 }
  58
  59
  60 string const TransInitState::deadkey(char c, KmodInfo d)
  61 {
  62         deadkey_ = c;
  63         deadkey_info_ = d;
  64         currentState = deadkey_state_;
  65         return string();
  66 }
  67
  68
  69 // TransDeadkeyState
  70 TransDeadkeyState::TransDeadkeyState()
  71 {
  72         deadkey_state_ = this;
  73 }
  74
  75
  76 string const TransDeadkeyState::normalkey(char c)
  77 {
  78         string res;
  79
  80         KmodException::iterator it = deadkey_info_.exception_list.begin();
  81         KmodException::iterator end = deadkey_info_.exception_list.end();
  82
  83         for (; it != end; ++it) {
  84                 if (it->c == c) {
  85                         res = it->data;
  86                         break;
  87                 }
  88         }
  89         if (it == end) {
  90                 res = DoAccent(c, deadkey_info_.accent);
  91         }
  92         currentState = init_state_;
  93         return res;
  94 }
  95
  96
  97 string const TransDeadkeyState::deadkey(char c, KmodInfo d)
  98 {
  99         string res;
 100
 101         // Check if the same deadkey was typed twice
 102         if (deadkey_ == c) {
 103                 res = deadkey_;
 104                 deadkey_ = 0;
 105                 deadkey_info_.accent = TEX_NOACCENT;
 106                 currentState = init_state_;
 107                 return res;
 108         }
 109
 110         // Check if it is a combination or an exception
 111         KmodException::const_iterator cit = deadkey_info_.exception_list.begin();
 112         KmodException::const_iterator end = deadkey_info_.exception_list.end();
 113         for (; cit != end; ++cit) {
 114                 if (cit->combined == true && cit->accent == d.accent) {
 115                         deadkey2_ = c;
 116                         deadkey2_info_ = d;
 117                         comb_info_ = (*cit);
 118                         currentState = combined_state_;
 119                         return string();
 120                 }
 121                 if (cit->c == c) {
 122                         res = cit->data;
 123                         deadkey_ = 0;
 124                         deadkey_info_.accent = TEX_NOACCENT;
 125                         currentState = init_state_;
 126                         return res;
 127                 }
 128         }
 129
 130         // Not a combination or an exception.
 131         // Output deadkey1 and keep deadkey2
 132
 133         if (deadkey_!= 0)
 134                 res = deadkey_;
 135         deadkey_ = c;
 136         deadkey_info_ = d;
 137         currentState = deadkey_state_;
 138         return res;
 139 }
 140
 141
 142 TransCombinedState::TransCombinedState()
 143 {
 144         combined_state_ = this;
 145 }
 146
 147
 148 string const TransCombinedState::normalkey(char c)
 149 {
 150         string const temp = DoAccent(c, deadkey2_info_.accent);
 151         string const res = DoAccent(temp, deadkey_info_.accent);
 152         currentState = init_state_;
 153         return res;
 154 }
 155
 156
 157 string const TransCombinedState::deadkey(char c, KmodInfo d)
 158 {
 159         // Third key in a row. Output the first one and
 160         // reenter with shifted deadkeys
 161         string res;
 162         if (deadkey_ != 0)
 163                 res = deadkey_;
 164         res += TOKEN_SEP;
 165         deadkey_ = deadkey2_;
 166         deadkey_info_ = deadkey2_info_;
 167         res += deadkey_state_->deadkey(c, d);
 168         return res;
 169 }
 170
 171
 172 // TransFSM
 173 TransFSM::TransFSM():
 174         TransFSMData(),
 175         TransInitState(),
 176         TransDeadkeyState(),
 177         TransCombinedState()
 178 {
 179         currentState = init_state_;
 180 }
 181
 182
 183 // TransManager
 184
 185 // Initialize static member.
 186 Trans TransManager::default_;
 187
 188
 189 TransManager::TransManager()
 190         : active_(0), t1_(new Trans), t2_(new Trans)
 191 {}
 192
 193
 194 // For the sake of boost::scoped_ptr.
 195 TransManager::~TransManager()
 196 {}
 197
 198
 199 int TransManager::SetPrimary(string const & language)
 200 {
 201         if (t1_->GetName() == language)
 202                 return 0;
 203
 204         return t1_->Load(language);
 205 }
 206
 207
 208 int TransManager::SetSecondary(string const & language)
 209 {
 210         if (t2_->GetName() == language)
 211                 return 0;
 212
 213         return t2_->Load(language);
 214 }
 215
 216
 217 bool TransManager::setCharset(string const & str)
 218 {
 219         return chset_.loadFile(str);
 220 }
 221
 222
 223 void TransManager::EnablePrimary()
 224 {
 225         if (t1_->IsDefined())
 226                 active_ = t1_.get();
 227
 228         lyxerr[Debug::KBMAP] << "Enabling primary keymap" << endl;
 229 }
 230
 231
 232 void TransManager::EnableSecondary()
 233 {
 234         if (t2_->IsDefined())
 235                 active_ = t2_.get();
 236         lyxerr[Debug::KBMAP] << "Enabling secondary keymap" << endl;
 237 }
 238
 239
 240 void TransManager::DisableKeymap()
 241 {
 242         active_ = &default_;
 243         lyxerr[Debug::KBMAP] << "Disabling keymap" << endl;
 244 }
 245
 246
 247 void  TransManager::TranslateAndInsert(char c, LyXText * text)
 248 {
 249         string res = active_->process(c, *this);
 250
 251         // Process with tokens
 252         string temp;
 253
 254         while (res.length() > 0) {
 255                 res = split(res, temp, TransState::TOKEN_SEP);
 256                 insert(temp, text);
 257         }
 258 }
 259
 260
 261 void TransManager::insertVerbatim(string const & str, LyXText * text)
 262 {
 263         string::size_type const l = str.length();
 264
 265         for (string::size_type i = 0; i < l; ++i) {
 266                 text->insertChar(str[i]);
 267         }
 268 }
 269
 270
 271 void TransManager::insert(string const & str, LyXText * text)
 272 {
 273         // Go through the character encoding only if the current
 274         // encoding (chset_->name()) matches the current font_norm
 275         // (lyrxc->font_norm)
 276
 277         // Is false to speak about "only if" the current encoding will
 278         // almost always be equal to font_norm.
 279         pair<bool, int> enc = chset_.encodeString(str);
 280         if (chset_.getName() != lyxrc.font_norm ||
 281             !enc.first) {
 282                 // Could not find an encoding
 283                 InsetLatexAccent ins(str);
 284                 if (ins.canDisplay()) {
 285                         text->insertInset(
 286                                           new InsetLatexAccent(ins));
 287                 } else {
 288                         insertVerbatim(str, text);
 289                 }
 290                 return;
 291         }
 292         string tmp;
 293         tmp += static_cast<char>(enc.second);
 294         insertVerbatim(tmp, text);
 295 }
 296
 297
 298 void TransManager::deadkey(char c, tex_accent accent, LyXText * t)
 299 {
 300         if (c == 0 && active_ != &default_) {
 301                 // A deadkey was pressed that cannot be printed
 302                 // or a accent command was typed in the minibuffer
 303                 KmodInfo i;
 304                 if (active_->isAccentDefined(accent, i) == true) {
 305                         string const res = trans_fsm_
 306                                 .currentState->deadkey(c, i);
 307                         insert(res, t);
 308                         return;
 309                 }
 310         }
 311
 312         if (active_ == &default_ || c == 0) {
 313                 KmodInfo i;
 314                 i.accent = accent;
 315                 i.data.erase();
 316                 string res = trans_fsm_.currentState->deadkey(c, i);
 317                 insert(res, t);
 318         } else {
 319                 // Go through the translation
 320                 TranslateAndInsert(c, t);
 321         }
 322 }