src/insets/ExternalSupport.cpp

   1 /**
   2  * \file ExternalSupport.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  * \author Angus Leeming
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "ExternalSupport.h"
  15 #include "ExternalTemplate.h"
  16 #include "ExternalTransforms.h"
  17 #include "InsetExternal.h"
  18
  19 #include "Buffer.h"
  20 #include "Converter.h"
  21 #include "ErrorList.h"
  22 #include "Exporter.h"
  23 #include "Format.h"
  24 #include "Mover.h"
  25
  26 #include "frontends/alert.h"
  27
  28 #include "support/debug.h"
  29 #include "support/filetools.h"
  30 #include "support/gettext.h"
  31 #include "support/lstrings.h"
  32 #include "support/lyxalgo.h"
  33 #include "support/os.h"
  34 #include "support/Package.h"
  35
  36 #include <algorithm>
  37
  38 using namespace std;
  39 using namespace lyx::support;
  40
  41 namespace lyx {
  42 namespace external {
  43
  44 Template const * getTemplatePtr(InsetExternalParams const & params)
  45 {
  46         TemplateManager const & etm = TemplateManager::get();
  47         return etm.getTemplateByName(params.templatename());
  48 }
  49
  50
  51 void editExternal(InsetExternalParams const & params, Buffer const & buffer)
  52 {
  53         formats.edit(buffer, params.filename,
  54                 formats.getFormatFromFile(params.filename));
  55 }
  56
  57
  58 namespace {
  59
  60 string const subst_path(string const & input,
  61                         string const & placeholder,
  62                         string const & path,
  63                         bool use_latex_path,
  64                         latex_path_extension ext = PROTECT_EXTENSION,
  65                         latex_path_dots dots = LEAVE_DOTS)
  66 {
  67         if (input.find(placeholder) == string::npos)
  68                 return input;
  69         // Don't use external_path here when use_latex_path is false, as the
  70         // path will be compared with another one in internal style later
  71         // in Converters::move.
  72         string const path2 = use_latex_path ?
  73                 latex_path(path, ext, dots) : path;
  74         return subst(input, placeholder, path2);
  75 }
  76
  77 } // namespace anon
  78
  79
  80 string const doSubstitution(InsetExternalParams const & params,
  81                             Buffer const & buffer, string const & s,
  82                             bool use_latex_path,
  83                             bool external_in_tmpdir,
  84                             Substitute what)
  85 {
  86         string result = s;
  87         if (what != PATHS && contains(result, "$$pngOrjpg")) {
  88                 // This is for raster images and pdflatex:
  89                 // Since pdflatex supports both jpg and png, we choose the best format:
  90                 // jpg if the original file is jpg to retain the compression, else png.
  91                 string format = formats.getFormatFromFile(params.filename);
  92                 if (format == "jpg")
  93                         result = subst(result, "$$pngOrjpg", "jpg");
  94                 else
  95                         result = subst(result, "$$pngOrjpg", "png");
  96         }
  97
  98         if (what == FORMATS)
  99                 return result;
 100
 101         Buffer const * masterBuffer = buffer.masterBuffer();
 102         string const parentpath = external_in_tmpdir ?
 103                 masterBuffer->temppath() :
 104                 buffer.filePath();
 105         string const filename = external_in_tmpdir ?
 106                 params.filename.mangledFileName() :
 107                 params.filename.outputFileName(parentpath);
 108         string const basename = changeExtension(
 109                         onlyFileName(filename), string());
 110         string const absname = makeAbsPath(filename, parentpath).absFileName();
 111
 112         if (what != ALL_BUT_PATHS) {
 113                 string const filepath = onlyPath(filename);
 114                 string const abspath = onlyPath(absname);
 115                 string const masterpath = external_in_tmpdir ?
 116                         masterBuffer->temppath() :
 117                         masterBuffer->filePath();
 118                 // FIXME UNICODE
 119                 string relToMasterPath = onlyPath(
 120                                 to_utf8(makeRelPath(from_utf8(absname),
 121                                                              from_utf8(masterpath))));
 122                 if (relToMasterPath == "./")
 123                         relToMasterPath.clear();
 124                 // FIXME UNICODE
 125                 string relToParentPath = onlyPath(
 126                                 to_utf8(makeRelPath(from_utf8(absname),
 127                                                              from_utf8(parentpath))));
 128                 if (relToParentPath == "./")
 129                         relToParentPath.clear();
 130
 131                 result = subst_path(result, "$$FPath", filepath,
 132                                     use_latex_path,
 133                                     PROTECT_EXTENSION,
 134                                     ESCAPE_DOTS);
 135                 result = subst_path(result, "$$AbsPath", abspath,
 136                                     use_latex_path,
 137                                     PROTECT_EXTENSION,
 138                                     ESCAPE_DOTS);
 139                 result = subst_path(result, "$$RelPathMaster",
 140                                     relToMasterPath, use_latex_path,
 141                                     PROTECT_EXTENSION,
 142                                     ESCAPE_DOTS);
 143                 result = subst_path(result, "$$RelPathParent",
 144                                     relToParentPath, use_latex_path,
 145                                     PROTECT_EXTENSION,
 146                                     ESCAPE_DOTS);
 147                 if (FileName::isAbsolute(filename)) {
 148                         result = subst_path(result, "$$AbsOrRelPathMaster",
 149                                             abspath, use_latex_path,
 150                                             PROTECT_EXTENSION,
 151                                             ESCAPE_DOTS);
 152                         result = subst_path(result, "$$AbsOrRelPathParent",
 153                                             abspath, use_latex_path,
 154                                             PROTECT_EXTENSION,
 155                                             ESCAPE_DOTS);
 156                 } else {
 157                         result = subst_path(result, "$$AbsOrRelPathMaster",
 158                                             relToMasterPath, use_latex_path,
 159                                             PROTECT_EXTENSION,
 160                                             ESCAPE_DOTS);
 161                         result = subst_path(result, "$$AbsOrRelPathParent",
 162                                             relToParentPath, use_latex_path,
 163                                             PROTECT_EXTENSION,
 164                                             ESCAPE_DOTS);
 165                 }
 166         }
 167
 168         if (what == PATHS)
 169                 return result;
 170
 171         result = subst_path(result, "$$FName", filename, use_latex_path,
 172                             EXCLUDE_EXTENSION);
 173         result = subst_path(result, "$$Basename", basename, use_latex_path,
 174                             PROTECT_EXTENSION, ESCAPE_DOTS);
 175         result = subst_path(result, "$$Extension",
 176                         '.' + getExtension(filename), use_latex_path);
 177         result = subst_path(result, "$$Tempname", params.tempname().absFileName(), use_latex_path);
 178         result = subst_path(result, "$$Sysdir",
 179                                 package().system_support().absFileName(), use_latex_path);
 180
 181         // Handle the $$Contents(filename) syntax
 182         if (contains(result, "$$Contents(\"")) {
 183                 // Since use_latex_path may be true we must extract the file
 184                 // name from s instead of result and do the substitutions
 185                 // again, this time with use_latex_path false.
 186                 size_t const spos = s.find("$$Contents(\"");
 187                 size_t const send = s.find("\")", spos);
 188                 string const file_template = s.substr(spos + 12, send - (spos + 12));
 189                 string const file = doSubstitution(params, buffer,
 190                                                    file_template, false,
 191                                                    external_in_tmpdir, what);
 192                 string contents;
 193
 194                 FileName const absfile(
 195                         makeAbsPath(file, masterBuffer->temppath()));
 196                 if (absfile.isReadableFile())
 197                         // FIXME UNICODE
 198                         contents = to_utf8(absfile.fileContents("UTF-8"));
 199
 200                 size_t const pos = result.find("$$Contents(\"");
 201                 size_t const end = result.find("\")", pos);
 202                 result.replace(pos, end + 2, contents);
 203         }
 204
 205         return result;
 206 }
 207
 208
 209 namespace {
 210
 211 /** update the file represented by the template.
 212     If \p external_in_tmpdir == true, then the generated file is
 213     placed in the buffer's temporary directory.
 214 */
 215 void updateExternal(InsetExternalParams const & params,
 216                     string const & format,
 217                     Buffer const & buffer,
 218                     ExportData & exportdata,
 219                     bool external_in_tmpdir,
 220                     bool dryrun)
 221 {
 222         Template const * const et_ptr = getTemplatePtr(params);
 223         if (!et_ptr)
 224                 return; // FAILURE
 225         Template const & et = *et_ptr;
 226
 227         if (!et.automaticProduction)
 228                 return; // NOT_NEEDED
 229
 230         Template::Formats::const_iterator cit = et.formats.find(format);
 231         if (cit == et.formats.end())
 232                 return; // FAILURE
 233
 234         Template::Format const & outputFormat = cit->second;
 235         if (outputFormat.updateResult.empty())
 236                 return; // NOT_NEEDED
 237
 238         string from_format = et.inputFormat;
 239         if (from_format.empty())
 240                 return; // NOT_NEEDED
 241
 242         if (from_format == "*") {
 243                 if (params.filename.empty())
 244                         return; // NOT_NEEDED
 245
 246                 // Try and ascertain the file format from its contents.
 247                 from_format = formats.getFormatFromFile(params.filename);
 248                 if (from_format.empty())
 249                         return; // FAILURE
 250         }
 251
 252         string const to_format = doSubstitution(params, buffer,
 253                 outputFormat.updateFormat, false, external_in_tmpdir, FORMATS);
 254         if (to_format.empty())
 255                 return; // NOT_NEEDED
 256
 257         // The master buffer. This is useful when there are multiple levels
 258         // of include files
 259         Buffer const * masterBuffer = buffer.masterBuffer();
 260
 261         // We copy the source file to the temp dir and do the conversion
 262         // there if necessary
 263         bool const isDir = params.filename.isDirectory();
 264         FileName const temp_file(
 265                 makeAbsPath(params.filename.mangledFileName(),
 266                                      masterBuffer->temppath()));
 267         if (!params.filename.empty() && !isDir) {
 268                 unsigned long const from_checksum = params.filename.checksum();
 269                 unsigned long const temp_checksum = temp_file.checksum();
 270
 271                 if (from_checksum != temp_checksum) {
 272                         Mover const & mover = getMover(from_format);
 273                         if (!mover.copy(params.filename, temp_file)) {
 274                                 LYXERR(Debug::EXTERNAL, "external::updateExternal. "
 275                                         << "Unable to copy " << params.filename << " to " << temp_file);
 276                                 return; // FAILURE
 277                         }
 278                 }
 279         }
 280
 281         // the generated file (always in the temp dir)
 282         string const to_file = doSubstitution(params, buffer,
 283                                               outputFormat.updateResult,
 284                                               false, true);
 285         FileName const abs_to_file(
 286                 makeAbsPath(to_file, masterBuffer->temppath()));
 287
 288         if (!dryrun) {
 289                 // Record the referenced files for the exporter.
 290                 // The exporter will copy them to the export dir.
 291                 typedef Template::Format::FileMap FileMap;
 292                 FileMap::const_iterator rit  = outputFormat.referencedFiles.begin();
 293                 FileMap::const_iterator rend = outputFormat.referencedFiles.end();
 294                 for (; rit != rend; ++rit) {
 295                         vector<string>::const_iterator fit  = rit->second.begin();
 296                         vector<string>::const_iterator fend = rit->second.end();
 297                         for (; fit != fend; ++fit) {
 298                                 FileName const source(makeAbsPath(
 299                                                 doSubstitution(params, buffer, *fit,
 300                                                                false, true),
 301                                                 masterBuffer->temppath()));
 302                                 // The path of the referenced file is never the
 303                                 // temp path, but the filename may be the mangled
 304                                 // or the real name. Therefore we substitute the
 305                                 // paths and names separately.
 306                                 string file = subst(*fit, "$$FName",
 307                                                 "$$FPath$$Basename$$Extension");
 308                                 file = doSubstitution(params, buffer, file, false, false,
 309                                                       PATHS);
 310                                 file = doSubstitution(params, buffer, file,
 311                                                       false, external_in_tmpdir,
 312                                                       ALL_BUT_PATHS);
 313                                 // if file is a relative name, it is interpreted
 314                                 // relative to the master document.
 315                                 if (makeAbsPath(file, masterBuffer->filePath()) !=
 316                                         params.filename.absFileName())
 317                                                 exportdata.addExternalFile(rit->first, source, file);
 318                         }
 319                 }
 320         }
 321
 322         // Do we need to perform the conversion?
 323         // Yes if to_file does not exist or if from_file is newer than to_file
 324         // or if from_file is a directory (bug 9925)
 325         if (!isDir && compare_timestamps(temp_file, abs_to_file) < 0)
 326                 return; // SUCCESS
 327
 328         // FIXME (Abdel 12/08/06): Is there a need to show these errors?
 329         ErrorList el;
 330         bool const success =
 331                 theConverters().convert(&buffer, temp_file, abs_to_file,
 332                                    params.filename, from_format, to_format, el,
 333                                    Converters::try_default | Converters::try_cache);
 334
 335         if (!success) {
 336                 LYXERR(Debug::EXTERNAL, "external::updateExternal. "
 337                         << "Unable to convert from " << from_format << " to " << to_format);
 338         }
 339
 340         // return success
 341 }
 342
 343
 344 string const substituteCommands(InsetExternalParams const & params,
 345                                 string const & input, string const & format);
 346
 347 string const substituteOptions(InsetExternalParams const & params,
 348                                string const & input, string const & format);
 349
 350 } // namespace anon
 351
 352
 353 void writeExternal(InsetExternalParams const & params,
 354                    string const & format,
 355                    Buffer const & buffer, otexstream & os,
 356                    ExportData & exportdata,
 357                    bool external_in_tmpdir,
 358                    bool dryrun)
 359 {
 360         Template const * const et_ptr = getTemplatePtr(params);
 361         if (!et_ptr)
 362                 return;
 363         Template const & et = *et_ptr;
 364
 365         Template::Formats::const_iterator cit = et.formats.find(format);
 366         if (cit == et.formats.end()) {
 367                 LYXERR(Debug::EXTERNAL, "External template format '" << format
 368                         << "' not specified in template " << params.templatename());
 369                 return;
 370         }
 371
 372         if (!dryrun || contains(cit->second.product, "$$Contents"))
 373                 updateExternal(params, format, buffer, exportdata,
 374                                external_in_tmpdir, dryrun);
 375
 376         bool const use_latex_path = format == "LaTeX";
 377         string str = doSubstitution(params, buffer, cit->second.product,
 378                                     use_latex_path, external_in_tmpdir);
 379
 380         string const absname = makeAbsPath(
 381                 params.filename.outputFileName(buffer.filePath()), buffer.filePath()).absFileName();
 382
 383         if (!dryrun && !external_in_tmpdir) {
 384                 if (!isValidLaTeXFileName(absname)) {
 385                         lyx::frontend::Alert::warning(_("Invalid filename"),
 386                                          _("The following filename will cause troubles "
 387                                                "when running the exported file through LaTeX: ") +
 388                                              from_utf8(absname));
 389                 }
 390                 if (!isValidDVIFileName(absname)) {
 391                         lyx::frontend::Alert::warning(_("Problematic filename for DVI"),
 392                                          _("The following filename can cause troubles "
 393                                                "when running the exported file through LaTeX "
 394                                                    "and opening the resulting DVI: ") +
 395                                              from_utf8(absname), true);
 396                 }
 397         }
 398
 399         str = substituteCommands(params, str, format);
 400         str = substituteOptions(params, str, format);
 401         // FIXME UNICODE
 402         os << from_utf8(str);
 403         return;
 404 }
 405
 406 namespace {
 407
 408 // Empty template, specialised below.
 409 template <typename TransformType>
 410 string const substituteIt(string const &,
 411                           TransformID,
 412                           string const &,
 413                           Template::Format const &,
 414                           InsetExternalParams const &);
 415
 416
 417 template <>
 418 string const substituteIt<TransformCommand>(string const & input,
 419                                             TransformID id,
 420                                             string const & /* formatname */,
 421                                             Template::Format const & format,
 422                                             InsetExternalParams const & params)
 423 {
 424         typedef map<TransformID, TransformStore> Transformers;
 425         Transformers::const_iterator it = format.command_transformers.find(id);
 426         if (it == format.command_transformers.end())
 427                 return input;
 428
 429         TransformStore const & store = it->second;
 430
 431         TransformCommand::ptr_type ptr;
 432         if (id == Rotate)
 433                 ptr = store.getCommandTransformer(params.rotationdata);
 434         else if (id == Resize)
 435                 ptr = store.getCommandTransformer(params.resizedata);
 436
 437         if (!ptr.get())
 438                 return input;
 439
 440         string result =
 441                 subst(input, ptr->front_placeholder(), ptr->front());
 442         return subst(result, ptr->back_placeholder(),  ptr->back());
 443 }
 444
 445
 446 template <>
 447 string const substituteIt<TransformOption>(string const & input,
 448                                            TransformID id,
 449                                            string const & fname,
 450                                            Template::Format const & format,
 451                                            InsetExternalParams const & params)
 452 {
 453         typedef map<TransformID, TransformStore> Transformers;
 454         Transformers::const_iterator it = format.option_transformers.find(id);
 455         if (it == format.option_transformers.end())
 456                 return input;
 457
 458         TransformStore const & store = it->second;
 459
 460         TransformOption::ptr_type ptr;
 461         switch (id) {
 462         case Clip:
 463                 ptr = store.getOptionTransformer(params.clipdata);
 464                 break;
 465         case Extra:
 466                 ptr = store.getOptionTransformer(params.extradata.get(fname));
 467                 break;
 468         case Rotate:
 469                 ptr = store.getOptionTransformer(params.rotationdata);
 470                 break;
 471         case Resize:
 472                 ptr = store.getOptionTransformer(params.resizedata);
 473                 break;
 474         }
 475
 476         if (!ptr.get())
 477                 return input;
 478
 479         return subst(input, ptr->placeholder(), ptr->option());
 480 }
 481
 482
 483 template <typename TransformerType>
 484 string const transformIt(InsetExternalParams const & params,
 485                          string const & s, string const & formatname)
 486 {
 487         Template const * const et = getTemplatePtr(params);
 488         if (!et || et->transformIds.empty())
 489                 return s;
 490
 491         Template::Formats::const_iterator fit = et->formats.find(formatname);
 492         if (fit == et->formats.end())
 493                 return s;
 494
 495         string result = s;
 496         Template::Format const & format =  fit->second;
 497
 498         typedef vector<TransformID> TransformsIDs;
 499         TransformsIDs::const_iterator it  = et->transformIds.begin();
 500         TransformsIDs::const_iterator end = et->transformIds.end();
 501         for (; it != end; ++it) {
 502                 result = substituteIt<TransformerType>(result, *it, formatname,
 503                                                        format, params);
 504         }
 505         return result;
 506 }
 507
 508
 509 string const substituteCommands(InsetExternalParams const & params,
 510                                 string const & input, string const & format)
 511 {
 512         return transformIt<TransformCommand>(params, input, format);
 513 }
 514
 515
 516 string const substituteOption(InsetExternalParams const & params,
 517                               string const & input, string const & format)
 518 {
 519         string opt = transformIt<TransformOption>(params, input, format);
 520
 521         if (format == "LaTeX" || format == "PDFLaTeX")
 522                 return sanitizeLatexOption(opt);
 523         if (format == "DocBook")
 524                 return sanitizeDocBookOption(opt);
 525         return opt;
 526 }
 527
 528
 529 string const substituteOptions(InsetExternalParams const & params,
 530                                string const & input, string const & format)
 531 {
 532         string output = input;
 533
 534         Template const * const et = getTemplatePtr(params);
 535         if (!et || et->transformIds.empty())
 536                 return output;
 537
 538         Template::Formats::const_iterator fit = et->formats.find(format);
 539         if (fit == et->formats.end() || fit->second.options.empty())
 540                 return output;
 541
 542         typedef vector<Template::Option> Options;
 543         Options const & options = fit->second.options;
 544         Options::const_iterator it  = options.begin();
 545         Options::const_iterator end = options.end();
 546         for (; it != end; ++it) {
 547                 string const opt = substituteOption(params, it->option, format);
 548                 string const placeholder = "$$" + it->name;
 549                 output = subst(output, placeholder, opt);
 550         }
 551
 552         return output;
 553 }
 554
 555 } // namespace anon
 556
 557 } // namespace external
 558
 559 } // namespace lyx