src/frontends/qt4/GuiCitation.cpp

   1 /**
   2  * \file GuiCitation.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Angus Leeming
   7  * \author Kalle Dalheimer
   8  * \author Abdelrazak Younes
   9  * \author Richard Heck
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "GuiCitation.h"
  17
  18 #include "support/debug.h"
  19 #include "support/gettext.h"
  20 #include "qt_helpers.h"
  21 #include "Buffer.h"
  22 #include "BufferParams.h"
  23
  24 #include "support/lstrings.h"
  25 #include "support/docstring.h"
  26
  27 #include "insets/InsetCommand.h"
  28
  29 #include <vector>
  30 #include <string>
  31
  32 #include <QCloseEvent>
  33 #include <QShowEvent>
  34
  35 #undef KeyPress
  36
  37 #include <boost/regex.hpp>
  38
  39 #include <algorithm>
  40 #include <string>
  41 #include <vector>
  42
  43 using namespace std;
  44 using namespace lyx::support;
  45
  46 namespace lyx {
  47 namespace frontend {
  48
  49 static vector<biblio::CiteStyle> citeStyles_;
  50
  51
  52 template<typename String>
  53 static QStringList to_qstring_list(vector<String> const & v)
  54 {
  55         QStringList qlist;
  56
  57         for (size_t i = 0; i != v.size(); ++i) {
  58                 if (v[i].empty())
  59                         continue;
  60                 qlist.append(lyx::toqstr(v[i]));
  61         }
  62         return qlist;
  63 }
  64
  65
  66 static vector<lyx::docstring> to_docstring_vector(QStringList const & qlist)
  67 {
  68         vector<lyx::docstring> v;
  69         for (int i = 0; i != qlist.size(); ++i) {
  70                 if (qlist[i].isEmpty())
  71                         continue;
  72                 v.push_back(lyx::qstring_to_ucs4(qlist[i]));
  73         }
  74         return v;
  75 }
  76
  77
  78 GuiCitation::GuiCitation(GuiView & lv)
  79         : GuiCommand(lv, "citation")
  80 {
  81         setupUi(this);
  82         setViewTitle(_("Citation"));
  83
  84         connect(citationStyleCO, SIGNAL(activated(int)),
  85                 this, SLOT(on_citationStyleCO_currentIndexChanged(int)));
  86         connect(fulllistCB, SIGNAL(clicked()),
  87                 this, SLOT(changed()));
  88         connect(forceuppercaseCB, SIGNAL(clicked()),
  89                 this, SLOT(changed()));
  90         connect(textBeforeED, SIGNAL(textChanged(QString)),
  91                 this, SLOT(changed()));
  92         connect(textAfterED, SIGNAL(textChanged(QString)),
  93                 this, SLOT(changed()));
  94         connect(clearPB, SIGNAL(clicked()),
  95                 findLE, SLOT(clear()));
  96         connect(this, SIGNAL(rejected()), this, SLOT(cleanUp()));
  97
  98         selectionManager = new GuiSelectionManager(availableLV, selectedLV,
  99                         addPB, deletePB, upPB, downPB, available(), selected());
 100         connect(selectionManager, SIGNAL(selectionChanged()),
 101                 this, SLOT(setCitedKeys()));
 102         connect(selectionManager, SIGNAL(updateHook()),
 103                 this, SLOT(updateDialog()));
 104         connect(selectionManager, SIGNAL(okHook()),
 105                 this, SLOT(on_okPB_clicked()));
 106
 107         bc().setPolicy(ButtonPolicy::NoRepeatedApplyReadOnlyPolicy);
 108 }
 109
 110
 111 void GuiCitation::cleanUp()
 112 {
 113         clearSelection();
 114         clearParams();
 115         close();
 116 }
 117
 118
 119 void GuiCitation::closeEvent(QCloseEvent * e)
 120 {
 121         clearSelection();
 122         clearParams();
 123         GuiDialog::closeEvent(e);
 124 }
 125
 126
 127 void GuiCitation::applyView()
 128 {
 129         int  const choice = max(0, citationStyleCO->currentIndex());
 130         style_ = choice;
 131         bool const full  = fulllistCB->isChecked();
 132         bool const force = forceuppercaseCB->isChecked();
 133
 134         QString const before = textBeforeED->text();
 135         QString const after = textAfterED->text();
 136
 137         apply(choice, full, force, before, after);
 138 }
 139
 140
 141 void GuiCitation::showEvent(QShowEvent * e)
 142 {
 143         init();
 144         findLE->clear();
 145         availableLV->setFocus();
 146         GuiDialog::showEvent(e);
 147 }
 148
 149
 150 void GuiCitation::on_okPB_clicked()
 151 {
 152         applyView();
 153         clearSelection();
 154         hide();
 155 }
 156
 157
 158 void GuiCitation::on_cancelPB_clicked()
 159 {
 160         clearSelection();
 161         hide();
 162 }
 163
 164
 165 void GuiCitation::on_applyPB_clicked()
 166 {
 167         applyView();
 168 }
 169
 170
 171 void GuiCitation::on_restorePB_clicked()
 172 {
 173         init();
 174         updateView();
 175 }
 176
 177
 178 void GuiCitation::updateView()
 179 {
 180         init();
 181         fillFields();
 182         fillEntries();
 183         updateDialog();
 184 }
 185
 186
 187 // The main point of separating this out is that the fill*() methods
 188 // called in update() do not need to be called for INTERNAL updates,
 189 // such as when addPB is pressed, as the list of fields, entries, etc,
 190 // will not have changed. At the moment, however, the division between
 191 // fillStyles() and updateStyle() doesn't lend itself to dividing the
 192 // two methods, though they should be divisible.
 193 void GuiCitation::updateDialog()
 194 {
 195         if (selectionManager->selectedFocused()) {
 196                 if (selectedLV->selectionModel()->selectedIndexes().isEmpty())
 197                         updateInfo(availableLV->currentIndex());
 198                 else
 199                         updateInfo(selectedLV->currentIndex());
 200         } else {
 201                 if (availableLV->selectionModel()->selectedIndexes().isEmpty())
 202                         updateInfo(QModelIndex());
 203                 else
 204                         updateInfo(availableLV->currentIndex());
 205         }
 206         setButtons();
 207
 208         textBeforeED->setText(textBefore());
 209         textAfterED->setText(textAfter());
 210         fillStyles();
 211         updateStyle();
 212 }
 213
 214
 215 void GuiCitation::updateFormatting(biblio::CiteStyle currentStyle)
 216 {
 217         biblio::CiteEngine const engine = getEngine();
 218         bool const natbib_engine =
 219                 engine == biblio::ENGINE_NATBIB_AUTHORYEAR ||
 220                 engine == biblio::ENGINE_NATBIB_NUMERICAL;
 221         bool const basic_engine = engine == biblio::ENGINE_BASIC;
 222
 223         bool const haveSelection =
 224                 selectedLV->model()->rowCount() > 0;
 225
 226         bool const isNocite = currentStyle == biblio::NOCITE;
 227
 228         fulllistCB->setEnabled(natbib_engine && haveSelection && !isNocite);
 229         forceuppercaseCB->setEnabled(natbib_engine && haveSelection && !isNocite);
 230         textBeforeED->setEnabled(!basic_engine && haveSelection && !isNocite);
 231         textBeforeLA->setEnabled(!basic_engine && haveSelection && !isNocite);
 232         textAfterED->setEnabled(haveSelection && !isNocite);
 233         textAfterLA->setEnabled(haveSelection && !isNocite);
 234         citationStyleCO->setEnabled(haveSelection);
 235         citationStyleLA->setEnabled(haveSelection);
 236 }
 237
 238
 239 void GuiCitation::updateStyle()
 240 {
 241         string const & command = params_.getCmdName();
 242
 243         // Find the style of the citekeys
 244         vector<biblio::CiteStyle> const & styles = citeStyles_;
 245         biblio::CitationStyle const cs(command);
 246
 247         vector<biblio::CiteStyle>::const_iterator cit =
 248                 std::find(styles.begin(), styles.end(), cs.style);
 249
 250         // restore the latest natbib style
 251         if (style_ >= 0 && style_ < citationStyleCO->count())
 252                 citationStyleCO->setCurrentIndex(style_);
 253         else
 254                 citationStyleCO->setCurrentIndex(0);
 255
 256         if (cit != styles.end()) {
 257                 int const i = int(cit - styles.begin());
 258                 citationStyleCO->setCurrentIndex(i);
 259                 fulllistCB->setChecked(cs.full);
 260                 forceuppercaseCB->setChecked(cs.forceUCase);
 261         } else {
 262                 fulllistCB->setChecked(false);
 263                 forceuppercaseCB->setChecked(false);
 264         }
 265         updateFormatting(cs.style);
 266 }
 267
 268 //This one needs to be called whenever citationStyleCO needs
 269 //to be updated---and this would be on anything that changes the
 270 //selection in selectedLV, or on a general update.
 271 void GuiCitation::fillStyles()
 272 {
 273         int const oldIndex = citationStyleCO->currentIndex();
 274
 275         citationStyleCO->clear();
 276
 277         QStringList selected_keys = selected()->stringList();
 278         if (selected_keys.empty()) {
 279                 citationStyleCO->setEnabled(false);
 280                 citationStyleLA->setEnabled(false);
 281                 return;
 282         }
 283
 284         int curr = selectedLV->model()->rowCount() - 1;
 285         if (curr < 0)
 286                 return;
 287
 288         if (!selectedLV->selectionModel()->selectedIndexes().empty())
 289                 curr = selectedLV->selectionModel()->selectedIndexes()[0].row();
 290
 291         QStringList sty = citationStyles(curr);
 292
 293         citationStyleCO->setEnabled(!sty.isEmpty());
 294         citationStyleLA->setEnabled(!sty.isEmpty());
 295
 296         if (sty.isEmpty())
 297                 return;
 298
 299         citationStyleCO->insertItems(0, sty);
 300
 301         if (oldIndex != -1 && oldIndex < citationStyleCO->count())
 302                 citationStyleCO->setCurrentIndex(oldIndex);
 303 }
 304
 305
 306 void GuiCitation::fillFields()
 307 {
 308         fieldsCO->blockSignals(true);
 309         int const oldIndex = fieldsCO->currentIndex();
 310         fieldsCO->clear();
 311         QStringList const & fields = getFieldsAsQStringList();
 312         fieldsCO->insertItem(0, qt_("All Fields"));
 313         fieldsCO->insertItem(1, qt_("Keys"));
 314         fieldsCO->insertItems(2, fields);
 315         if (oldIndex != -1 && oldIndex < fieldsCO->count())
 316                 fieldsCO->setCurrentIndex(oldIndex);
 317         fieldsCO->blockSignals(false);
 318 }
 319
 320
 321 void GuiCitation::fillEntries()
 322 {
 323         entriesCO->blockSignals(true);
 324         int const oldIndex = entriesCO->currentIndex();
 325         entriesCO->clear();
 326         QStringList const & entries = getEntriesAsQStringList();
 327         entriesCO->insertItem(0, qt_("All Entry Types"));
 328         entriesCO->insertItems(1, entries);
 329         if (oldIndex != -1 && oldIndex < entriesCO->count())
 330                 entriesCO->setCurrentIndex(oldIndex);
 331         entriesCO->blockSignals(false);
 332 }
 333
 334
 335 bool GuiCitation::isSelected(const QModelIndex & idx)
 336 {
 337         QString const str = idx.data().toString();
 338         return selected()->stringList().contains(str);
 339 }
 340
 341
 342 void GuiCitation::setButtons()
 343 {
 344         selectionManager->update();
 345         int const srows = selectedLV->model()->rowCount();
 346         applyPB->setEnabled(srows > 0);
 347         okPB->setEnabled(srows > 0);
 348 }
 349
 350
 351 void GuiCitation::updateInfo(QModelIndex const & idx)
 352 {
 353         if (idx.isValid()) {
 354                 QString const keytxt = getKeyInfo(idx.data().toString());
 355                 infoML->document()->setPlainText(keytxt);
 356         } else
 357                 infoML->document()->clear();
 358 }
 359
 360
 361 void GuiCitation::findText(QString const & text, bool reset)
 362 {
 363         //"All Fields" and "Keys" are the first two
 364         int index = fieldsCO->currentIndex() - 2;
 365         vector<docstring> const & fields = availableFields();
 366         docstring field;
 367
 368         if (index <= -1 || index >= int(fields.size()))
 369                 //either "All Fields" or "Keys" or an invalid value
 370                 field = from_ascii("");
 371         else
 372                 field = fields[index];
 373
 374         //Was it "Keys"?
 375         bool const onlyKeys = index == -1;
 376
 377         //"All Entry Types" is first.
 378         index = entriesCO->currentIndex() - 1;
 379         vector<docstring> const & entries = availableEntries();
 380         docstring entryType;
 381         if (index < 0 || index >= int(entries.size()))
 382                 entryType = from_ascii("");
 383         else
 384                 entryType = entries[index];
 385
 386         bool const case_sentitive = caseCB->checkState();
 387         bool const reg_exp = regexCB->checkState();
 388         findKey(text, onlyKeys, field, entryType,
 389                        case_sentitive, reg_exp, reset);
 390         //FIXME
 391         //It'd be nice to save and restore the current selection in
 392         //availableLV. Currently, we get an automatic reset, since the
 393         //model is reset.
 394
 395         updateDialog();
 396 }
 397
 398
 399 void GuiCitation::on_fieldsCO_currentIndexChanged(int /*index*/)
 400 {
 401         findText(findLE->text(), true);
 402 }
 403
 404
 405 void GuiCitation::on_entriesCO_currentIndexChanged(int /*index*/)
 406 {
 407         findText(findLE->text(), true);
 408 }
 409
 410
 411 void GuiCitation::on_citationStyleCO_currentIndexChanged(int index)
 412 {
 413         if (index >= 0 && index < citationStyleCO->count()) {
 414                 vector<biblio::CiteStyle> const & styles = citeStyles_;
 415                 updateFormatting(styles[index]);
 416         }
 417 }
 418
 419
 420 void GuiCitation::on_findLE_textChanged(const QString & text)
 421 {
 422         clearPB->setDisabled(text.isEmpty());
 423         if (text.isEmpty())
 424                 findLE->setFocus();
 425         findText(text);
 426 }
 427
 428
 429 void GuiCitation::on_caseCB_stateChanged(int)
 430 {
 431         findText(findLE->text());
 432 }
 433
 434
 435 void GuiCitation::on_regexCB_stateChanged(int)
 436 {
 437         findText(findLE->text());
 438 }
 439
 440
 441 void GuiCitation::changed()
 442 {
 443         setButtons();
 444 }
 445
 446
 447 void GuiCitation::apply(int const choice, bool full, bool force,
 448         QString before, QString after)
 449 {
 450         if (cited_keys_.isEmpty())
 451                 return;
 452
 453         vector<biblio::CiteStyle> const & styles = citeStyles_;
 454         if (styles[choice] == biblio::NOCITE) {
 455                 full = false;
 456                 force = false;
 457                 before.clear();
 458                 after.clear();
 459         }
 460
 461         string const command =
 462                 biblio::CitationStyle(styles[choice], full, force)
 463                 .asLatexStr();
 464
 465         params_.setCmdName(command);
 466         params_["key"] = qstring_to_ucs4(cited_keys_.join(","));
 467         params_["before"] = qstring_to_ucs4(before);
 468         params_["after"] = qstring_to_ucs4(after);
 469         dispatchParams();
 470 }
 471
 472
 473 void GuiCitation::clearSelection()
 474 {
 475         cited_keys_.clear();
 476         selected_model_.setStringList(cited_keys_);
 477 }
 478
 479
 480 QString GuiCitation::textBefore()
 481 {
 482         return toqstr(params_["before"]);
 483 }
 484
 485
 486 QString GuiCitation::textAfter()
 487 {
 488         return toqstr(params_["after"]);
 489 }
 490
 491
 492 void GuiCitation::init()
 493 {
 494         // Make the list of all available bibliography keys
 495         all_keys_ = to_qstring_list(availableKeys());
 496         available_model_.setStringList(all_keys_);
 497
 498         // Ditto for the keys cited in this inset
 499         QString str = toqstr(params_["key"]);
 500         if (str.isEmpty())
 501                 cited_keys_.clear();
 502         else
 503                 cited_keys_ = str.split(",");
 504         selected_model_.setStringList(cited_keys_);
 505 }
 506
 507
 508 void GuiCitation::findKey(QString const & str, bool only_keys,
 509         docstring field, docstring entryType,
 510         bool case_sensitive, bool reg_exp, bool reset)
 511 {
 512         // Used for optimisation: store last searched string.
 513         static QString last_searched_string;
 514         // Used to disable the above optimisation.
 515         static bool last_case_sensitive;
 516         static bool last_reg_exp;
 517         // Reset last_searched_string in case of changed option.
 518         if (last_case_sensitive != case_sensitive
 519                 || last_reg_exp != reg_exp) {
 520                         LYXERR(Debug::GUI, "GuiCitation::findKey: optimisation disabled!");
 521                 last_searched_string.clear();
 522         }
 523         // save option for next search.
 524         last_case_sensitive = case_sensitive;
 525         last_reg_exp = reg_exp;
 526
 527         Qt::CaseSensitivity qtcase = case_sensitive?
 528                         Qt::CaseSensitive: Qt::CaseInsensitive;
 529         QStringList keys;
 530         // If new string (str) contains the last searched one...
 531         if (!reset &&
 532                 !last_searched_string.isEmpty() &&
 533                 str.size() > 1 &&
 534                 str.contains(last_searched_string, qtcase))
 535                 // ... then only search within already found list.
 536                 keys = available_model_.stringList();
 537         else
 538                 // ... else search all keys.
 539                 keys = all_keys_;
 540         // save searched string for next search.
 541         last_searched_string = str;
 542
 543         QStringList result;
 544
 545         // First, filter by entryType, which will be faster than
 546         // what follows, so we may get to do that on less.
 547         vector<docstring> keyVector = to_docstring_vector(keys);
 548         filterByEntryType(keyVector, entryType);
 549
 550         if (str.isEmpty())
 551                 result = to_qstring_list(keyVector);
 552         else
 553                 result = to_qstring_list(searchKeys(keyVector, only_keys,
 554                         qstring_to_ucs4(str), field, case_sensitive, reg_exp));
 555
 556         available_model_.setStringList(result);
 557 }
 558
 559
 560 QStringList GuiCitation::getFieldsAsQStringList()
 561 {
 562         return to_qstring_list(availableFields());
 563 }
 564
 565
 566 QStringList GuiCitation::getEntriesAsQStringList()
 567 {
 568         return to_qstring_list(availableEntries());
 569 }
 570
 571
 572 QStringList GuiCitation::citationStyles(int sel)
 573 {
 574         docstring const key = qstring_to_ucs4(cited_keys_[sel]);
 575         return to_qstring_list(bibkeysInfo_.getCiteStrings(key, buffer()));
 576 }
 577
 578
 579 QString GuiCitation::getKeyInfo(QString const & sel)
 580 {
 581         return toqstr(getInfo(qstring_to_ucs4(sel)));
 582 }
 583
 584
 585 void GuiCitation::setCitedKeys()
 586 {
 587         cited_keys_ = selected_model_.stringList();
 588 }
 589
 590
 591 bool GuiCitation::initialiseParams(string const & data)
 592 {
 593         InsetCommandMailer::string2params(lfun_name_, data, params_);
 594
 595         biblio::CiteEngine const engine = buffer().params().getEngine();
 596
 597         bibkeysInfo_.fillWithBibKeys(&buffer());
 598
 599         citeStyles_ = biblio::getCiteStyles(engine);
 600
 601         return true;
 602 }
 603
 604
 605 void GuiCitation::clearParams()
 606 {
 607         params_.clear();
 608         bibkeysInfo_.clear();
 609 }
 610
 611
 612 vector<docstring> const GuiCitation::availableKeys() const
 613 {
 614         return bibkeysInfo_.getKeys();
 615 }
 616
 617
 618 vector<docstring> const GuiCitation::availableFields() const
 619 {
 620         return bibkeysInfo_.getFields();
 621 }
 622
 623
 624 vector<docstring> const GuiCitation::availableEntries() const
 625 {
 626         return bibkeysInfo_.getEntries();
 627 }
 628
 629
 630 void GuiCitation::filterByEntryType(
 631         vector<docstring> & keyVector, docstring entryType)
 632 {
 633         if (entryType.empty())
 634                 return;
 635
 636         vector<docstring>::iterator it = keyVector.begin();
 637         vector<docstring>::iterator end = keyVector.end();
 638
 639         vector<docstring> result;
 640         for (; it != end; ++it) {
 641                 docstring const key = *it;
 642                 BiblioInfo::const_iterator cit = bibkeysInfo_.find(key);
 643                 if (cit == bibkeysInfo_.end())
 644                         continue;
 645                 if (cit->second.entryType == entryType)
 646                         result.push_back(key);
 647         }
 648         keyVector = result;
 649 }
 650
 651
 652 biblio::CiteEngine GuiCitation::getEngine() const
 653 {
 654         return buffer().params().getEngine();
 655 }
 656
 657
 658 docstring GuiCitation::getInfo(docstring const & key) const
 659 {
 660         if (bibkeysInfo_.empty())
 661                 return docstring();
 662
 663         return bibkeysInfo_.getInfo(key);
 664 }
 665
 666
 667 // Escape special chars.
 668 // All characters are literals except: '.|*?+(){}[]^$\'
 669 // These characters are literals when preceded by a "\", which is done here
 670 // @todo: This function should be moved to support, and then the test in tests
 671 //        should be moved there as well.
 672 static docstring escape_special_chars(docstring const & expr)
 673 {
 674         // Search for all chars '.|*?+(){}[^$]\'
 675         // Note that '[' and '\' must be escaped.
 676         // This is a limitation of boost::regex, but all other chars in BREs
 677         // are assumed literal.
 678         static const boost::regex reg("[].|*?+(){}^$\\[\\\\]");
 679
 680         // $& is a perl-like expression that expands to all
 681         // of the current match
 682         // The '$' must be prefixed with the escape character '\' for
 683         // boost to treat it as a literal.
 684         // Thus, to prefix a matched expression with '\', we use:
 685         // FIXME: UNICODE
 686         return from_utf8(boost::regex_replace(to_utf8(expr), reg, "\\\\$&"));
 687 }
 688
 689
 690 vector<docstring> GuiCitation::searchKeys(
 691         vector<docstring> const & keys_to_search, bool only_keys,
 692         docstring const & search_expression, docstring field,
 693         bool case_sensitive, bool regex)
 694 {
 695         vector<docstring> foundKeys;
 696
 697         docstring expr = trim(search_expression);
 698         if (expr.empty())
 699                 return foundKeys;
 700
 701         if (!regex)
 702                 // We must escape special chars in the search_expr so that
 703                 // it is treated as a simple string by boost::regex.
 704                 expr = escape_special_chars(expr);
 705
 706         boost::regex reg_exp;
 707         try {
 708                 reg_exp.assign(to_utf8(expr), case_sensitive ?
 709                         boost::regex_constants::normal : boost::regex_constants::icase);
 710         } catch (boost::regex_error & e) {
 711                 // boost::regex throws an exception if the regular expression is not
 712                 // valid.
 713                 LYXERR(Debug::GUI, e.what());
 714                 return vector<docstring>();
 715         }
 716
 717         vector<docstring>::const_iterator it = keys_to_search.begin();
 718         vector<docstring>::const_iterator end = keys_to_search.end();
 719         for (; it != end; ++it ) {
 720                 BiblioInfo::const_iterator info = bibkeysInfo_.find(*it);
 721                 if (info == bibkeysInfo_.end())
 722                         continue;
 723
 724                 BibTeXInfo const & kvm = info->second;
 725                 string data;
 726                 if (only_keys)
 727                         data = to_utf8(*it);
 728                 else if (field.empty())
 729                         data = to_utf8(*it) + ' ' + to_utf8(kvm.allData);
 730                 else if (kvm.hasField(field))
 731                         data = to_utf8(kvm.getValueForField(field));
 732
 733                 if (data.empty())
 734                         continue;
 735
 736                 try {
 737                         if (boost::regex_search(data, reg_exp))
 738                                 foundKeys.push_back(*it);
 739                 }
 740                 catch (boost::regex_error & e) {
 741                         LYXERR(Debug::GUI, e.what());
 742                         return vector<docstring>();
 743                 }
 744         }
 745         return foundKeys;
 746 }
 747
 748
 749 Dialog * createGuiCitation(GuiView & lv) { return new GuiCitation(lv); }
 750
 751
 752 } // namespace frontend
 753 } // namespace lyx
 754
 755 #include "GuiCitation_moc.cpp"
 756