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.availableFile(),
  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         Buffer const * masterBuffer = buffer.masterBuffer();
  87         string const parentpath = external_in_tmpdir ?
  88                 masterBuffer->temppath() :
  89                 buffer.filePath();
  90         string const filename = external_in_tmpdir ?
  91                 params.filename.mangledFilename() :
  92                 params.filename.outputFilename(parentpath);
  93         string const basename = changeExtension(
  94                         onlyFilename(filename), string());
  95         string const absname = makeAbsPath(filename, parentpath).absFilename();
  96
  97         string result = s;
  98         if (what != ALL_BUT_PATHS) {
  99                 string const filepath = onlyPath(filename);
 100                 string const abspath = onlyPath(absname);
 101                 string const masterpath = external_in_tmpdir ?
 102                         masterBuffer->temppath() :
 103                         masterBuffer->filePath();
 104                 // FIXME UNICODE
 105                 string relToMasterPath = onlyPath(
 106                                 to_utf8(makeRelPath(from_utf8(absname),
 107                                                              from_utf8(masterpath))));
 108                 if (relToMasterPath == "./")
 109                         relToMasterPath.clear();
 110                 // FIXME UNICODE
 111                 string relToParentPath = onlyPath(
 112                                 to_utf8(makeRelPath(from_utf8(absname),
 113                                                              from_utf8(parentpath))));
 114                 if (relToParentPath == "./")
 115                         relToParentPath.clear();
 116
 117                 result = subst_path(result, "$$FPath", filepath,
 118                                     use_latex_path,
 119                                     PROTECT_EXTENSION,
 120                                     ESCAPE_DOTS);
 121                 result = subst_path(result, "$$AbsPath", abspath,
 122                                     use_latex_path,
 123                                     PROTECT_EXTENSION,
 124                                     ESCAPE_DOTS);
 125                 result = subst_path(result, "$$RelPathMaster",
 126                                     relToMasterPath, use_latex_path,
 127                                     PROTECT_EXTENSION,
 128                                     ESCAPE_DOTS);
 129                 result = subst_path(result, "$$RelPathParent",
 130                                     relToParentPath, use_latex_path,
 131                                     PROTECT_EXTENSION,
 132                                     ESCAPE_DOTS);
 133                 if (FileName(filename).isAbsolute()) {
 134                         result = subst_path(result, "$$AbsOrRelPathMaster",
 135                                             abspath, use_latex_path,
 136                                             PROTECT_EXTENSION,
 137                                             ESCAPE_DOTS);
 138                         result = subst_path(result, "$$AbsOrRelPathParent",
 139                                             abspath, use_latex_path,
 140                                             PROTECT_EXTENSION,
 141                                             ESCAPE_DOTS);
 142                 } else {
 143                         result = subst_path(result, "$$AbsOrRelPathMaster",
 144                                             relToMasterPath, use_latex_path,
 145                                             PROTECT_EXTENSION,
 146                                             ESCAPE_DOTS);
 147                         result = subst_path(result, "$$AbsOrRelPathParent",
 148                                             relToParentPath, use_latex_path,
 149                                             PROTECT_EXTENSION,
 150                                             ESCAPE_DOTS);
 151                 }
 152         }
 153
 154         if (what == PATHS)
 155                 return result;
 156
 157         result = subst_path(result, "$$FName", filename, use_latex_path,
 158                             EXCLUDE_EXTENSION);
 159         result = subst_path(result, "$$Basename", basename, use_latex_path,
 160                             PROTECT_EXTENSION, ESCAPE_DOTS);
 161         result = subst_path(result, "$$Extension",
 162                         '.' + getExtension(filename), use_latex_path);
 163         result = subst_path(result, "$$Tempname", params.tempname().absFilename(), use_latex_path);
 164         result = subst_path(result, "$$Sysdir",
 165                                 package().system_support().absFilename(), use_latex_path);
 166
 167         // Handle the $$Contents(filename) syntax
 168         if (contains(result, "$$Contents(\"")) {
 169                 // Since use_latex_path may be true we must extract the file
 170                 // name from s instead of result and do the substitutions
 171                 // again, this time with use_latex_path false.
 172                 size_t const spos = s.find("$$Contents(\"");
 173                 size_t const send = s.find("\")", spos);
 174                 string const file_template = s.substr(spos + 12, send - (spos + 12));
 175                 string const file = doSubstitution(params, buffer,
 176                                                    file_template, false,
 177                                                    external_in_tmpdir, what);
 178                 string contents;
 179
 180                 FileName const absfile(
 181                         makeAbsPath(file, masterBuffer->temppath()));
 182                 if (absfile.isReadableFile())
 183                         // FIXME UNICODE
 184                         contents = to_utf8(absfile.fileContents("UTF-8"));
 185
 186                 size_t const pos = result.find("$$Contents(\"");
 187                 size_t const end = result.find("\")", pos);
 188                 result.replace(pos, end + 2, contents);
 189         }
 190
 191         return result;
 192 }
 193
 194
 195 namespace {
 196
 197 /** update the file represented by the template.
 198     If \p external_in_tmpdir == true, then the generated file is
 199     placed in the buffer's temporary directory.
 200 */
 201 void updateExternal(InsetExternalParams const & params,
 202                     string const & format,
 203                     Buffer const & buffer,
 204                     ExportData & exportdata,
 205                     bool external_in_tmpdir,
 206                     bool dryrun)
 207 {
 208         Template const * const et_ptr = getTemplatePtr(params);
 209         if (!et_ptr)
 210                 return; // FAILURE
 211         Template const & et = *et_ptr;
 212
 213         if (!et.automaticProduction)
 214                 return; // NOT_NEEDED
 215
 216         Template::Formats::const_iterator cit = et.formats.find(format);
 217         if (cit == et.formats.end())
 218                 return; // FAILURE
 219
 220         Template::Format const & outputFormat = cit->second;
 221         if (outputFormat.updateResult.empty())
 222                 return; // NOT_NEEDED
 223
 224         string from_format = et.inputFormat;
 225         if (from_format.empty())
 226                 return; // NOT_NEEDED
 227
 228         if (from_format == "*") {
 229                 if (params.filename.empty())
 230                         return; // NOT_NEEDED
 231
 232                 // Try and ascertain the file format from its contents.
 233                 from_format = formats.getFormatFromFile(params.filename);
 234                 if (from_format.empty())
 235                         return; // FAILURE
 236         }
 237
 238         string const to_format = outputFormat.updateFormat;
 239         if (to_format.empty())
 240                 return; // NOT_NEEDED
 241
 242         // The master buffer. This is useful when there are multiple levels
 243         // of include files
 244         Buffer const * masterBuffer = buffer.masterBuffer();
 245
 246         // We copy the source file to the temp dir and do the conversion
 247         // there if necessary
 248         FileName const temp_file(
 249                 makeAbsPath(params.filename.mangledFilename(),
 250                                      masterBuffer->temppath()));
 251         if (!params.filename.empty() && !params.filename.isDirectory()) {
 252                 unsigned long const from_checksum = params.filename.checksum();
 253                 unsigned long const temp_checksum = temp_file.checksum();
 254
 255                 if (from_checksum != temp_checksum) {
 256                         Mover const & mover = getMover(from_format);
 257                         if (!mover.copy(params.filename.availableFile(), temp_file)) {
 258                                 LYXERR(Debug::EXTERNAL, "external::updateExternal. "
 259                                         << "Unable to copy " << params.filename << " to " << temp_file);
 260                                 return; // FAILURE
 261                         }
 262                 }
 263         }
 264
 265         // the generated file (always in the temp dir)
 266         string const to_file = doSubstitution(params, buffer,
 267                                               outputFormat.updateResult,
 268                                               false, true);
 269         FileName const abs_to_file(
 270                 makeAbsPath(to_file, masterBuffer->temppath()));
 271
 272         if (!dryrun) {
 273                 // Record the referenced files for the exporter.
 274                 // The exporter will copy them to the export dir.
 275                 typedef Template::Format::FileMap FileMap;
 276                 FileMap::const_iterator rit  = outputFormat.referencedFiles.begin();
 277                 FileMap::const_iterator rend = outputFormat.referencedFiles.end();
 278                 for (; rit != rend; ++rit) {
 279                         vector<string>::const_iterator fit  = rit->second.begin();
 280                         vector<string>::const_iterator fend = rit->second.end();
 281                         for (; fit != fend; ++fit) {
 282                                 FileName const source(makeAbsPath(
 283                                                 doSubstitution(params, buffer, *fit,
 284                                                                false, true),
 285                                                 masterBuffer->temppath()));
 286                                 // The path of the referenced file is never the
 287                                 // temp path, but the filename may be the mangled
 288                                 // or the real name. Therefore we substitute the
 289                                 // paths and names separately.
 290                                 string file = subst(*fit, "$$FName",
 291                                                 "$$FPath$$Basename$$Extension");
 292                                 file = doSubstitution(params, buffer, file, false, false,
 293                                                       PATHS);
 294                                 file = doSubstitution(params, buffer, file,
 295                                                       false, external_in_tmpdir,
 296                                                       ALL_BUT_PATHS);
 297                                 // if file is a relative name, it is interpreted
 298                                 // relative to the master document.
 299                                 exportdata.addExternalFile(rit->first, source, file);
 300                         }
 301                 }
 302         }
 303
 304         // Do we need to perform the conversion?
 305         // Yes if to_file does not exist or if from_file is newer than to_file
 306         if (compare_timestamps(temp_file, abs_to_file) < 0)
 307                 return; // SUCCESS
 308
 309         // FIXME (Abdel 12/08/06): Is there a need to show these errors?
 310         ErrorList el;
 311         bool const success =
 312                 theConverters().convert(&buffer, temp_file, abs_to_file,
 313                                    params.filename.availableFile(), from_format, to_format, el,
 314                                    Converters::try_default | Converters::try_cache);
 315
 316         if (!success) {
 317                 LYXERR(Debug::EXTERNAL, "external::updateExternal. "
 318                         << "Unable to convert from " << from_format << " to " << to_format);
 319         }
 320
 321         // return success
 322 }
 323
 324
 325 string const substituteCommands(InsetExternalParams const & params,
 326                                 string const & input, string const & format);
 327
 328 string const substituteOptions(InsetExternalParams const & params,
 329                                string const & input, string const & format);
 330
 331 } // namespace anon
 332
 333
 334 int writeExternal(InsetExternalParams const & params,
 335                   string const & format,
 336                   Buffer const & buffer, odocstream & os,
 337                   ExportData & exportdata,
 338                   bool external_in_tmpdir,
 339                   bool dryrun)
 340 {
 341         Template const * const et_ptr = getTemplatePtr(params);
 342         if (!et_ptr)
 343                 return 0;
 344         Template const & et = *et_ptr;
 345
 346         Template::Formats::const_iterator cit = et.formats.find(format);
 347         if (cit == et.formats.end()) {
 348                 LYXERR(Debug::EXTERNAL, "External template format '" << format
 349                         << "' not specified in template " << params.templatename());
 350                 return 0;
 351         }
 352
 353         if (!dryrun || contains(cit->second.product, "$$Contents"))
 354                 updateExternal(params, format, buffer, exportdata,
 355                                external_in_tmpdir, dryrun);
 356
 357         bool const use_latex_path = format == "LaTeX";
 358         string str = doSubstitution(params, buffer, cit->second.product,
 359                                     use_latex_path, external_in_tmpdir);
 360
 361         string const absname = makeAbsPath(
 362                 params.filename.outputFilename(buffer.filePath()), buffer.filePath()).absFilename();
 363
 364         if (!external_in_tmpdir && !isValidLaTeXFilename(absname)) {
 365                 lyx::frontend::Alert::warning(_("Invalid filename"),
 366                                               _("The following filename is likely to cause trouble "
 367                                                 "when running the exported file through LaTeX: ") +
 368                                               from_utf8(absname));
 369         }
 370
 371         str = substituteCommands(params, str, format);
 372         str = substituteOptions(params, str, format);
 373         // FIXME UNICODE
 374         os << from_utf8(str);
 375         return int(count(str.begin(), str.end(),'\n'));
 376 }
 377
 378 namespace {
 379
 380 // Empty template, specialised below.
 381 template <typename TransformType>
 382 string const substituteIt(string const &,
 383                           TransformID,
 384                           string const &,
 385                           Template::Format const &,
 386                           InsetExternalParams const &);
 387
 388
 389 template <>
 390 string const substituteIt<TransformCommand>(string const & input,
 391                                             TransformID id,
 392                                             string const & /* formatname */,
 393                                             Template::Format const & format,
 394                                             InsetExternalParams const & params)
 395 {
 396         typedef map<TransformID, TransformStore> Transformers;
 397         Transformers::const_iterator it = format.command_transformers.find(id);
 398         if (it == format.command_transformers.end())
 399                 return input;
 400
 401         TransformStore const & store = it->second;
 402
 403         TransformCommand::ptr_type ptr;
 404         if (id == Rotate)
 405                 ptr = store.getCommandTransformer(params.rotationdata);
 406         else if (id == Resize)
 407                 ptr = store.getCommandTransformer(params.resizedata);
 408
 409         if (!ptr.get())
 410                 return input;
 411
 412         string result =
 413                 subst(input, ptr->front_placeholder(), ptr->front());
 414         return subst(result, ptr->back_placeholder(),  ptr->back());
 415 }
 416
 417
 418 template <>
 419 string const substituteIt<TransformOption>(string const & input,
 420                                            TransformID id,
 421                                            string const & fname,
 422                                            Template::Format const & format,
 423                                            InsetExternalParams const & params)
 424 {
 425         typedef map<TransformID, TransformStore> Transformers;
 426         Transformers::const_iterator it = format.option_transformers.find(id);
 427         if (it == format.option_transformers.end())
 428                 return input;
 429
 430         TransformStore const & store = it->second;
 431
 432         TransformOption::ptr_type ptr;
 433         switch (id) {
 434         case Clip:
 435                 ptr = store.getOptionTransformer(params.clipdata);
 436                 break;
 437         case Extra:
 438                 ptr = store.getOptionTransformer(params.extradata.get(fname));
 439                 break;
 440         case Rotate:
 441                 ptr = store.getOptionTransformer(params.rotationdata);
 442                 break;
 443         case Resize:
 444                 ptr = store.getOptionTransformer(params.resizedata);
 445                 break;
 446         }
 447
 448         if (!ptr.get())
 449                 return input;
 450
 451         return subst(input, ptr->placeholder(), ptr->option());
 452 }
 453
 454
 455 template <typename TransformerType>
 456 string const transformIt(InsetExternalParams const & params,
 457                          string const & s, string const & formatname)
 458 {
 459         Template const * const et = getTemplatePtr(params);
 460         if (!et || et->transformIds.empty())
 461                 return s;
 462
 463         Template::Formats::const_iterator fit = et->formats.find(formatname);
 464         if (fit == et->formats.end())
 465                 return s;
 466
 467         string result = s;
 468         Template::Format const & format =  fit->second;
 469
 470         typedef vector<TransformID> TransformsIDs;
 471         TransformsIDs::const_iterator it  = et->transformIds.begin();
 472         TransformsIDs::const_iterator end = et->transformIds.end();
 473         for (; it != end; ++it) {
 474                 result = substituteIt<TransformerType>(result, *it, formatname,
 475                                                        format, params);
 476         }
 477         return result;
 478 }
 479
 480
 481 string const substituteCommands(InsetExternalParams const & params,
 482                                 string const & input, string const & format)
 483 {
 484         return transformIt<TransformCommand>(params, input, format);
 485 }
 486
 487
 488 string const substituteOption(InsetExternalParams const & params,
 489                               string const & input, string const & format)
 490 {
 491         string opt = transformIt<TransformOption>(params, input, format);
 492
 493         if (format == "LaTeX" || format == "PDFLaTeX")
 494                 return sanitizeLatexOption(opt);
 495         if (format == "DocBook")
 496                 return sanitizeDocBookOption(opt);
 497         return opt;
 498 }
 499
 500
 501 string const substituteOptions(InsetExternalParams const & params,
 502                                string const & input, string const & format)
 503 {
 504         string output = input;
 505
 506         Template const * const et = getTemplatePtr(params);
 507         if (!et || et->transformIds.empty())
 508                 return output;
 509
 510         Template::Formats::const_iterator fit = et->formats.find(format);
 511         if (fit == et->formats.end() || fit->second.options.empty())
 512                 return output;
 513
 514         typedef vector<Template::Option> Options;
 515         Options const & options = fit->second.options;
 516         Options::const_iterator it  = options.begin();
 517         Options::const_iterator end = options.end();
 518         for (; it != end; ++it) {
 519                 string const opt = substituteOption(params, it->option, format);
 520                 string const placeholder = "$$" + it->name;
 521                 output = subst(output, placeholder, opt);
 522         }
 523
 524         return output;
 525 }
 526
 527 } // namespace anon
 528
 529 } // namespace external
 530
 531 } // namespace lyx