src/insets/InsetExternal.cpp

   1 /**
   2  * \file InsetExternal.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Asger Alstrup Nielsen
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetExternal.h"
  14 #include "insets/ExternalSupport.h"
  15 #include "insets/RenderButton.h"
  16 #include "insets/RenderGraphic.h"
  17 #include "insets/RenderPreview.h"
  18
  19 #include "Buffer.h"
  20 #include "BufferView.h"
  21 #include "Cursor.h"
  22 #include "DispatchResult.h"
  23 #include "Exporter.h"
  24 #include "FuncStatus.h"
  25 #include "FuncRequest.h"
  26 #include "LaTeXFeatures.h"
  27 #include "Lexer.h"
  28 #include "LyX.h" // use_gui
  29 #include "LyXRC.h"
  30 #include "MetricsInfo.h"
  31 #include "OutputParams.h"
  32 #include "output_latex.h"
  33 #include "output_xhtml.h"
  34 #include "texstream.h"
  35 #include "TocBackend.h"
  36
  37 #include "frontends/alert.h"
  38 #include "frontends/Application.h"
  39
  40 #include "graphics/PreviewLoader.h"
  41
  42 #include "support/convert.h"
  43 #include "support/debug.h"
  44 #include "support/ExceptionMessage.h"
  45 #include "support/filetools.h"
  46 #include "support/gettext.h"
  47 #include "support/lassert.h"
  48 #include "support/lstrings.h"
  49 #include "support/lyxlib.h"
  50 #include "support/TempFile.h"
  51
  52 #include <sstream>
  53 #include <vector>
  54
  55 using namespace std;
  56 using namespace lyx::support;
  57
  58 namespace {
  59
  60 unsigned int const defaultLyxScale = 100;
  61
  62 string defaultTemplateName;
  63
  64 } // namespace
  65
  66
  67 namespace lyx {
  68
  69 namespace Alert = frontend::Alert;
  70
  71 namespace external {
  72
  73 TempName::TempName()
  74 {
  75         // must have an extension for the converter code to work correctly.
  76         support::TempFile f("lyxextXXXXXX.tmp");
  77         // Let f go out of scope here and delete the file ourselves in
  78         // ~TempName(), since otherwise external processes would not be able
  79         // to use the file on windows (bug 9925). This is not as safe as
  80         // keeping a support::TempFile member would be, but the best we can do.
  81         f.setAutoRemove(false);
  82         tempname_ = f.name();
  83 }
  84
  85
  86 TempName::TempName(TempName const & that)
  87 {
  88         *this = that;
  89 }
  90
  91
  92 TempName::~TempName()
  93 {
  94         tempname_.removeFile();
  95 }
  96
  97
  98 TempName & TempName::operator=(TempName const & other)
  99 {
 100         if (this != &other) {
 101                 if (!tempname_.empty())
 102                         tempname_.removeFile();
 103                 support::TempFile f("lyxextXXXXXX.tmp");
 104                 f.setAutoRemove(false);
 105                 tempname_ = f.name();
 106         }
 107         return *this;
 108 }
 109
 110
 111 support::FileName TempName::operator()() const
 112 {
 113         return tempname_;
 114 }
 115
 116 } // namespace external
 117
 118
 119 InsetExternalParams::InsetExternalParams()
 120         : display(true),
 121           preview_mode(PREVIEW_OFF),
 122           lyxscale(defaultLyxScale),
 123           draft(false)
 124 {
 125         if (defaultTemplateName.empty()) {
 126                 external::TemplateManager const & etm =
 127                         external::TemplateManager::get();
 128                 if (!etm.getTemplates().empty())
 129                         templatename_ = etm.getTemplates().begin()->first;
 130         } else
 131                 templatename_ = defaultTemplateName;
 132 }
 133
 134
 135 namespace {
 136
 137 template <typename T>
 138 void clearIfNotFound(T & data, external::TransformID value,
 139                      vector<external::TransformID> const & ids)
 140 {
 141         typedef vector<external::TransformID>::const_iterator
 142                 const_iterator;
 143
 144         const_iterator it  = ids.begin();
 145         const_iterator end = ids.end();
 146         it = find(it, end, value);
 147         if (it == end)
 148                 data = T();
 149 }
 150
 151 } // namespace
 152
 153
 154 void InsetExternalParams::settemplate(string const & name)
 155 {
 156         templatename_ = name;
 157
 158         external::TemplateManager const & etm =
 159                 external::TemplateManager::get();
 160         external::Template const * const et = etm.getTemplateByName(name);
 161         if (!et)
 162                 // Be safe. Don't lose data.
 163                 return;
 164
 165         // Ascertain which transforms the template supports.
 166         // Empty all those that it doesn't.
 167         vector<external::TransformID> const & ids = et->transformIds;
 168         clearIfNotFound(clipdata,     external::Clip,   ids);
 169         clearIfNotFound(extradata,    external::Extra,  ids);
 170         clearIfNotFound(resizedata,   external::Resize, ids);
 171         clearIfNotFound(rotationdata, external::Rotate, ids);
 172
 173         //
 174         preview_mode = et->preview_mode;
 175 }
 176
 177
 178 void InsetExternalParams::write(Buffer const & buf, ostream & os) const
 179 {
 180         os << "External\n"
 181            << "\ttemplate " << templatename() << '\n';
 182
 183         if (!filename.empty())
 184                 os << "\tfilename " << filename.outputFileName(buf.filePath()) << '\n';
 185
 186         if (!display)
 187                 os << "\tdisplay false\n";
 188
 189         if (lyxscale != defaultLyxScale)
 190                 os << "\tlyxscale " << convert<string>(lyxscale) << '\n';
 191
 192         if (draft)
 193                 os << "\tdraft\n";
 194
 195         if (!clipdata.bbox.empty())
 196                 os << "\tboundingBox " << clipdata.bbox << '\n';
 197         if (clipdata.clip)
 198                 os << "\tclip\n";
 199
 200         external::ExtraData::const_iterator it  = extradata.begin();
 201         external::ExtraData::const_iterator end = extradata.end();
 202         for (; it != end; ++it) {
 203                 if (!it->second.empty())
 204                         os << "\textra " << it->first << " \""
 205                            << it->second << "\"\n";
 206         }
 207
 208         if (!rotationdata.no_rotation()) {
 209                 os << "\trotateAngle " << rotationdata.adjAngle() << '\n';
 210                 if (rotationdata.origin() != external::RotationData::DEFAULT)
 211                         os << "\trotateOrigin "
 212                            << rotationdata.originString() << '\n';
 213         }
 214
 215         if (!resizedata.no_resize()) {
 216                 double const scl = convert<double>(resizedata.scale);
 217                 if (!float_equal(scl, 0.0, 0.05)) {
 218                         if (!float_equal(scl, 100.0, 0.05))
 219                                 os << "\tscale "
 220                                    << resizedata.scale << '\n';
 221                 } else {
 222                         if (!resizedata.width.zero())
 223                                 os << "\twidth "
 224                                    << resizedata.width.asString() << '\n';
 225                         if (!resizedata.height.zero())
 226                                 os << "\theight "
 227                                    << resizedata.height.asString() << '\n';
 228                 }
 229                 if (resizedata.keepAspectRatio)
 230                         os << "\tkeepAspectRatio\n";
 231         }
 232 }
 233
 234
 235 bool InsetExternalParams::read(Buffer const & buffer, Lexer & lex)
 236 {
 237         enum {
 238                 EX_TEMPLATE = 1,
 239                 EX_FILENAME,
 240                 EX_DISPLAY,
 241                 EX_LYXSCALE,
 242                 EX_DRAFT,
 243                 EX_BOUNDINGBOX,
 244                 EX_CLIP,
 245                 EX_EXTRA,
 246                 EX_HEIGHT,
 247                 EX_KEEPASPECTRATIO,
 248                 EX_ROTATEANGLE,
 249                 EX_ROTATEORIGIN,
 250                 EX_SCALE,
 251                 EX_WIDTH,
 252                 EX_END
 253         };
 254
 255         LexerKeyword external_tags[] = {
 256                 { "\\end_inset",     EX_END },
 257                 { "boundingBox",     EX_BOUNDINGBOX },
 258                 { "clip",            EX_CLIP },
 259                 { "display",         EX_DISPLAY},
 260                 { "draft",           EX_DRAFT},
 261                 { "extra",           EX_EXTRA },
 262                 { "filename",        EX_FILENAME},
 263                 { "height",          EX_HEIGHT },
 264                 { "keepAspectRatio", EX_KEEPASPECTRATIO },
 265                 { "lyxscale",        EX_LYXSCALE},
 266                 { "rotateAngle",     EX_ROTATEANGLE },
 267                 { "rotateOrigin",    EX_ROTATEORIGIN },
 268                 { "scale",           EX_SCALE },
 269                 { "template",        EX_TEMPLATE },
 270                 { "width",           EX_WIDTH }
 271         };
 272
 273         PushPopHelper pph(lex, external_tags);
 274
 275         bool found_end  = false;
 276         bool read_error = false;
 277
 278         while (lex.isOK()) {
 279                 switch (lex.lex()) {
 280                 case EX_TEMPLATE:
 281                         lex.next();
 282                         templatename_ = lex.getString();
 283                         break;
 284
 285                 case EX_FILENAME: {
 286                         lex.eatLine();
 287                         string const name = lex.getString();
 288                         filename = buffer.getReferencedFileName(name);
 289                         break;
 290                 }
 291
 292                 case EX_DISPLAY: {
 293                         lex.next();
 294                         display = lex.getString() != "false";
 295                         break;
 296                 }
 297
 298                 case EX_LYXSCALE: {
 299                         lex.next();
 300                         int const ls = lex.getInteger();
 301                         // negative values are not accepted.
 302                         if (ls >= 0)
 303                                 lyxscale = ls;
 304                         else
 305                                 lex.printError("ExternalInset::read: Wrong lyxscale: $$Token");
 306                         break;
 307                 }
 308
 309                 case EX_DRAFT:
 310                         draft = true;
 311                         break;
 312
 313                 case EX_BOUNDINGBOX:
 314                         lex.next();
 315                         clipdata.bbox.xl = Length(lex.getString());
 316                         lex.next();
 317                         clipdata.bbox.yb = Length(lex.getString());
 318                         lex.next();
 319                         clipdata.bbox.xr = Length(lex.getString());
 320                         lex.next();
 321                         clipdata.bbox.yt = Length(lex.getString());
 322                         break;
 323
 324                 case EX_CLIP:
 325                         clipdata.clip = true;
 326                         break;
 327
 328                 case EX_EXTRA: {
 329                         lex.next();
 330                         string const name = lex.getString();
 331                         lex.next();
 332                         extradata.set(name, lex.getString());
 333                         break;
 334                 }
 335
 336                 case EX_HEIGHT:
 337                         lex.next();
 338                         resizedata.height = Length(lex.getString());
 339                         break;
 340
 341                 case EX_KEEPASPECTRATIO:
 342                         resizedata.keepAspectRatio = true;
 343                         break;
 344
 345                 case EX_ROTATEANGLE:
 346                         lex.next();
 347                         rotationdata.angle = lex.getString();
 348                         break;
 349
 350                 case EX_ROTATEORIGIN:
 351                         lex.next();
 352                         rotationdata.origin(lex.getString());
 353                         break;
 354
 355                 case EX_SCALE:
 356                         lex.next();
 357                         resizedata.scale = lex.getString();
 358                         break;
 359
 360                 case EX_WIDTH:
 361                         lex.next();
 362                         resizedata.width = Length(lex.getString());
 363                         break;
 364
 365                 case EX_END:
 366                         found_end = true;
 367                         break;
 368
 369                 default:
 370                         lex.printError("ExternalInset::read: Wrong tag: $$Token");
 371                         read_error = true;
 372                         break;
 373                 }
 374
 375                 if (found_end || read_error)
 376                         break;
 377         }
 378
 379         if (!found_end)
 380                 lex.printError("ExternalInsetParams::read: Missing \\end_inset.");
 381
 382         // This is a trick to make sure that the data are self-consistent.
 383         settemplate(templatename_);
 384
 385         if (lyxerr.debugging(Debug::EXTERNAL)) {
 386                 lyxerr  << "InsetExternalParams::read:\n";
 387                 write(buffer, lyxerr);
 388         }
 389
 390         return !read_error;
 391 }
 392
 393
 394 namespace {
 395
 396 docstring screenLabel(InsetExternalParams const & params,
 397                             Buffer const & buffer)
 398 {
 399         external::Template const * const ptr =
 400                 external::getTemplatePtr(params);
 401         if (!ptr)
 402                 // FIXME UNICODE
 403                 return bformat((_("External template %1$s is not installed")),
 404                                         from_utf8(params.templatename()));
 405         // FIXME UNICODE
 406         docstring gui = _(ptr->guiName);
 407         gui += ": ";
 408
 409         if (params.filename.empty())
 410                 gui += "???";
 411         else
 412                 gui += from_utf8(params.filename.relFileName(buffer.filePath()));
 413
 414         return gui;
 415 }
 416
 417 } // namespace
 418
 419
 420 InsetExternal::InsetExternal(Buffer * buf)
 421         : Inset(buf), renderer_(new RenderButton)
 422 {
 423 }
 424
 425
 426 // Mouse hover is not copied and remains empty
 427 InsetExternal::InsetExternal(InsetExternal const & other)
 428         : Inset(other),
 429           params_(other.params_),
 430           renderer_(other.renderer_->clone(this))
 431 {}
 432
 433
 434 InsetExternal::~InsetExternal()
 435 {
 436         hideDialogs("external", this);
 437
 438         map<BufferView const *, bool>::iterator it = mouse_hover_.begin();
 439         map<BufferView const *, bool>::iterator end = mouse_hover_.end();
 440         for (; it != end; ++it)
 441                 if (it->second)
 442                         it->first->clearLastInset(this);
 443 }
 444
 445
 446 bool InsetExternal::setMouseHover(BufferView const * bv, bool mouse_hover) const
 447 {
 448         mouse_hover_[bv] = mouse_hover;
 449         return true;
 450 }
 451
 452
 453 void InsetExternal::statusChanged() const
 454 {
 455         updateFrontend();
 456 }
 457
 458
 459 void InsetExternal::doDispatch(Cursor & cur, FuncRequest & cmd)
 460 {
 461         switch (cmd.action()) {
 462
 463         case LFUN_INSET_EDIT: {
 464                 InsetExternalParams p =  params();
 465                 if (!cmd.argument().empty())
 466                         string2params(to_utf8(cmd.argument()), buffer(), p);
 467                 external::editExternal(p, buffer());
 468                 break;
 469         }
 470
 471         case LFUN_INSET_MODIFY: {
 472                 InsetExternalParams p;
 473                 string2params(to_utf8(cmd.argument()), buffer(), p);
 474                 cur.recordUndo();
 475                 setParams(p);
 476                 break;
 477         }
 478
 479         case LFUN_INSET_DIALOG_UPDATE:
 480                 cur.bv().updateDialog("external",
 481                         params2string(params(), cur.bv().buffer()));
 482                 break;
 483
 484         default:
 485                 Inset::doDispatch(cur, cmd);
 486         }
 487 }
 488
 489
 490 bool InsetExternal::getStatus(Cursor & cur, FuncRequest const & cmd,
 491                 FuncStatus & flag) const
 492 {
 493         switch (cmd.action()) {
 494
 495         case LFUN_INSET_EDIT:
 496         case LFUN_INSET_MODIFY:
 497         case LFUN_INSET_DIALOG_UPDATE:
 498                 flag.setEnabled(true);
 499                 return true;
 500
 501         default:
 502                 return Inset::getStatus(cur, cmd, flag);
 503         }
 504 }
 505
 506
 507 void InsetExternal::addToToc(DocIterator const & cpit, bool output_active,
 508                                                          UpdateType, TocBackend & backend) const
 509 {
 510         docstring str = screenLabel(params_, buffer());
 511         TocBuilder & b = backend.builder("external");
 512         b.pushItem(cpit, str, output_active);
 513         b.pop();
 514 }
 515
 516
 517 bool InsetExternal::showInsetDialog(BufferView * bv) const
 518 {
 519         bv->showDialog("external", params2string(params(), bv->buffer()),
 520                 const_cast<InsetExternal *>(this));
 521         return true;
 522 }
 523
 524
 525 void InsetExternal::metrics(MetricsInfo & mi, Dimension & dim) const
 526 {
 527         renderer_->metrics(mi, dim);
 528 }
 529
 530
 531 void InsetExternal::draw(PainterInfo & pi, int x, int y) const
 532 {
 533         if (renderer_->asButton())
 534                 renderer_->setRenderState(mouse_hover_[pi.base.bv]);
 535         renderer_->draw(pi, x, y);
 536 }
 537
 538
 539 namespace {
 540
 541 graphics::Params get_grfx_params(InsetExternalParams const & eparams)
 542 {
 543         graphics::Params gparams;
 544
 545         gparams.filename = eparams.filename;
 546         gparams.scale = eparams.lyxscale;
 547         if (eparams.clipdata.clip)
 548                 gparams.bb = eparams.clipdata.bbox;
 549         gparams.angle = convert<double>(eparams.rotationdata.adjAngle());
 550         gparams.display = eparams.display;
 551
 552         return gparams;
 553 }
 554
 555 } // namespace
 556
 557
 558 static bool isPreviewWanted(InsetExternalParams const & params)
 559 {
 560         return params.display && params.filename.isReadableFile();
 561 }
 562
 563
 564 static docstring latexString(InsetExternal const & inset)
 565 {
 566         odocstringstream ods;
 567         otexstream os(ods);
 568         // We don't need to set runparams.encoding since it is not used by
 569         // latex().
 570         OutputParams runparams(0);
 571         runparams.flavor = OutputParams::LATEX;
 572         inset.latex(os, runparams);
 573         return ods.str();
 574 }
 575
 576
 577 static void add_preview_and_start_loading(RenderMonitoredPreview & renderer,
 578                                    InsetExternal const & inset,
 579                                    Buffer const & buffer)
 580 {
 581         InsetExternalParams const & params = inset.params();
 582
 583         if (RenderPreview::previewText() && isPreviewWanted(params)) {
 584                 renderer.setAbsFile(params.filename);
 585                 docstring const snippet = latexString(inset);
 586                 renderer.addPreview(snippet, buffer);
 587                 renderer.startLoading(buffer);
 588         }
 589 }
 590
 591
 592 InsetExternalParams const & InsetExternal::params() const
 593 {
 594         return params_;
 595 }
 596
 597
 598 void InsetExternal::updatePreview()
 599 {
 600         setParams(params_);
 601 }
 602
 603
 604 void InsetExternal::setParams(InsetExternalParams const & p)
 605 {
 606         params_ = p;
 607
 608         // Subsequent calls to the InsetExternal::Params default constructor
 609         // will use this.
 610         defaultTemplateName = params_.templatename();
 611
 612         if (!external::getTemplatePtr(params_) || params_.filename.empty()
 613                 || !params_.display
 614                 || !lyxrc.display_graphics
 615                 || params_.preview_mode == PREVIEW_OFF
 616                 || (params_.preview_mode == PREVIEW_INSTANT
 617                     && !RenderPreview::previewText())) {
 618                 RenderButton * button_ptr = renderer_->asButton();
 619                 if (!button_ptr) {
 620                         renderer_.reset(new RenderButton);
 621                         button_ptr = renderer_->asButton();
 622                 }
 623                 button_ptr->update(screenLabel(params_, buffer()), true, false);
 624                 return;
 625         }
 626
 627         switch (params_.preview_mode) {
 628         case PREVIEW_OFF:
 629                 // Already taken care of above.
 630                 LASSERT(false, return);
 631                 break;
 632         case PREVIEW_INSTANT: {
 633                 renderer_ = make_unique<RenderMonitoredPreview>(this);
 634                 RenderMonitoredPreview * preview_ptr = renderer_->asMonitoredPreview();
 635                 // This connection is closed at the same time as this is destroyed.
 636                 preview_ptr->connect([=]() { fileChanged(); });
 637                 add_preview_and_start_loading(*preview_ptr, *this, buffer());
 638                 break;
 639         }
 640         case PREVIEW_GRAPHICS: {
 641                 RenderGraphic * graphic_ptr = renderer_->asGraphic();
 642                 if (!graphic_ptr) {
 643                         renderer_.reset(new RenderGraphic(this));
 644                         graphic_ptr = renderer_->asGraphic();
 645                 }
 646                 graphic_ptr->update(get_grfx_params(params_));
 647                 break;
 648         }
 649         }
 650 }
 651
 652
 653 void InsetExternal::fileChanged() const
 654 {
 655         Buffer const * const buffer = updateFrontend();
 656         if (!buffer)
 657                 return;
 658
 659         RenderMonitoredPreview * const ptr = renderer_->asMonitoredPreview();
 660         LASSERT(ptr, return);
 661
 662         ptr->removePreview(*buffer);
 663         add_preview_and_start_loading(*ptr, *this, *buffer);
 664 }
 665
 666
 667 void InsetExternal::write(ostream & os) const
 668 {
 669         params_.write(buffer(), os);
 670 }
 671
 672
 673 void InsetExternal::read(Lexer & lex)
 674 {
 675         InsetExternalParams params;
 676         if (params.read(buffer(), lex))
 677                 setParams(params);
 678 }
 679
 680
 681 void InsetExternal::latex(otexstream & os, OutputParams const & runparams) const
 682 {
 683         if (params_.draft) {
 684                 // FIXME UNICODE
 685                 os << "\\fbox{\\ttfamily{}"
 686                    << from_utf8(params_.filename.outputFileName(buffer().filePath()))
 687                    << "}\n";
 688                 return;
 689         }
 690
 691         // "nice" means that the buffer is exported to LaTeX format but not
 692         // run through the LaTeX compiler.
 693         // If we're running through the LaTeX compiler, we should write the
 694         // generated files in the buffer's temporary directory.
 695         bool const external_in_tmpdir = !runparams.nice;
 696         bool const dryrun = runparams.dryrun || runparams.inComment;
 697
 698         // If the template has specified a PDFLaTeX output, then we try and
 699         // use that.
 700         if (runparams.flavor == OutputParams::PDFLATEX) {
 701                 external::Template const * const et_ptr =
 702                         external::getTemplatePtr(params_);
 703                 if (!et_ptr)
 704                         return;
 705                 external::Template const & et = *et_ptr;
 706
 707                 external::Template::Formats::const_iterator cit =
 708                         et.formats.find("PDFLaTeX");
 709
 710                 if (cit != et.formats.end()) {
 711                         external::writeExternal(params_, "PDFLaTeX",
 712                                                 buffer(), os,
 713                                                 *(runparams.exportdata),
 714                                                 external_in_tmpdir,
 715                                                 dryrun);
 716                         return;
 717                 }
 718         }
 719
 720         external::writeExternal(params_, "LaTeX", buffer(), os,
 721                                 *(runparams.exportdata),
 722                                 external_in_tmpdir,
 723                                 dryrun);
 724 }
 725
 726
 727 int InsetExternal::plaintext(odocstringstream & os,
 728                              OutputParams const & runparams, size_t) const
 729 {
 730         // this is too slow for constant use
 731         if (runparams.for_tooltip)
 732                 return 0;
 733
 734         bool const external_in_tmpdir = !runparams.nice;
 735         bool const dryrun = runparams.dryrun || runparams.inComment;
 736         otexstream ots(os);
 737         ots << '\n'; // output external material on a new line
 738         external::writeExternal(params_, "Ascii", buffer(), ots,
 739                                 *(runparams.exportdata), external_in_tmpdir, dryrun);
 740         return PLAINTEXT_NEWLINE;
 741 }
 742
 743
 744 int InsetExternal::docbook(odocstream & os,
 745                            OutputParams const & runparams) const
 746 {
 747         bool const external_in_tmpdir = !runparams.nice;
 748         bool const dryrun = runparams.dryrun || runparams.inComment;
 749         odocstringstream ods;
 750         otexstream ots(ods);
 751         external::writeExternal(params_, "DocBook", buffer(), ots,
 752                                 *(runparams.exportdata), external_in_tmpdir, dryrun);
 753         os << ods.str();
 754         return int(count(ods.str().begin(), ods.str().end(), '\n'));
 755 }
 756
 757
 758 docstring InsetExternal::xhtml(XHTMLStream & xs,
 759                         OutputParams const & runparams) const
 760 {
 761         bool const external_in_tmpdir = !runparams.nice;
 762         bool const dryrun = runparams.dryrun || runparams.inComment;
 763         odocstringstream ods;
 764         otexstream ots(ods);
 765         external::writeExternal(params_, "XHTML", buffer(), ots,
 766                                        *(runparams.exportdata), external_in_tmpdir, dryrun);
 767         xs << XHTMLStream::ESCAPE_NONE << ods.str();
 768         return docstring();
 769 }
 770
 771
 772 void InsetExternal::validate(LaTeXFeatures & features) const
 773 {
 774         if (params_.draft)
 775                 return;
 776
 777         external::Template const * const et_ptr =
 778                 external::getTemplatePtr(params_);
 779         if (!et_ptr)
 780                 return;
 781         external::Template const & et = *et_ptr;
 782
 783         string format;
 784         switch (features.runparams().flavor) {
 785         case OutputParams::LATEX:
 786         case OutputParams::DVILUATEX:
 787                 format = "LaTeX";
 788                 break;
 789         case OutputParams::LUATEX:
 790         case OutputParams::PDFLATEX:
 791         case OutputParams::XETEX:
 792                 format = "PDFLaTeX";
 793                 break;
 794         case OutputParams::XML:
 795                 format = "DocBook";
 796                 break;
 797         case OutputParams::HTML:
 798                 format = "html";
 799                 break;
 800         case OutputParams::TEXT:
 801                 format = "text";
 802                 break;
 803         case OutputParams::LYX:
 804                 format = "lyx";
 805                 break;
 806         }
 807         external::Template::Formats::const_iterator cit =
 808                 et.formats.find(format);
 809
 810         if (cit == et.formats.end()) {
 811                 // If the template has not specified a PDFLaTeX output,
 812                 // we try the LaTeX format.
 813                 if (format == "PDFLaTeX") {
 814                         cit = et.formats.find("LaTeX");
 815                         if (cit == et.formats.end())
 816                                 return;
 817                 } else
 818                         return;
 819         }
 820
 821         // FIXME: We don't need that always, see InsetGraphics
 822         features.require("lyxdot");
 823
 824         vector<string>::const_iterator it  = cit->second.requirements.begin();
 825         vector<string>::const_iterator end = cit->second.requirements.end();
 826         for (; it != end; ++it)
 827                 features.require(*it);
 828
 829         external::TemplateManager & etm = external::TemplateManager::get();
 830
 831         for (string const & name : cit->second.preambleNames) {
 832                 docstring const preamble = etm.getPreambleDefByName(name);
 833                 if (!preamble.empty())
 834                         features.addPreambleSnippet(preamble);
 835         }
 836 }
 837
 838
 839 void InsetExternal::addPreview(DocIterator const & /*inset_pos*/,
 840                                graphics::PreviewLoader & ploader) const
 841 {
 842         RenderMonitoredPreview * const ptr = renderer_->asMonitoredPreview();
 843         if (!ptr)
 844                 return;
 845
 846         if (isPreviewWanted(params())) {
 847                 ptr->setAbsFile(params_.filename);
 848                 docstring const snippet = latexString(*this);
 849                 ptr->addPreview(snippet, ploader);
 850         }
 851 }
 852
 853
 854 string InsetExternal::contextMenuName() const
 855 {
 856         return "context-external";
 857 }
 858
 859
 860 void InsetExternal::string2params(string const & in, Buffer const & buffer,
 861         InsetExternalParams & params)
 862 {
 863         params = InsetExternalParams();
 864         if (in.empty())
 865                 return;
 866
 867         istringstream data(in);
 868         Lexer lex;
 869         lex.setStream(data);
 870
 871         string name;
 872         lex >> name;
 873         if (!lex || name != "external") {
 874                 LYXERR0("InsetExternal::string2params(" << in << ")\n"
 875                                           "Expected arg 1 to be \"external\"\n");
 876                 return;
 877         }
 878
 879         // This is part of the inset proper that is usually swallowed
 880         // by Text::readInset
 881         string id;
 882         lex >> id;
 883         if (!lex || id != "External") {
 884                 LYXERR0("InsetExternal::string2params(" << in << ")\n"
 885                                           "Expected arg 2 to be \"External\"\n");
 886                 return;
 887         }
 888
 889         params.read(buffer, lex);
 890 }
 891
 892
 893 string InsetExternal::params2string(InsetExternalParams const & params,
 894         Buffer const & buffer)
 895 {
 896         ostringstream data;
 897         data << "external" << ' ';
 898         params.write(buffer, data);
 899         data << "\\end_inset\n";
 900         return data.str();
 901 }
 902
 903 } // namespace lyx