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         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::isAbsolute(filename)) {
 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, 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                                 if (makeAbsPath(file, masterBuffer->filePath()) !=
 300                                         params.filename.absFileName())
 301                                                 exportdata.addExternalFile(rit->first, source, file);
 302                         }
 303                 }
 304         }
 305
 306         // Do we need to perform the conversion?
 307         // Yes if to_file does not exist or if from_file is newer than to_file
 308         if (compare_timestamps(temp_file, abs_to_file) < 0)
 309                 return; // SUCCESS
 310
 311         // FIXME (Abdel 12/08/06): Is there a need to show these errors?
 312         ErrorList el;
 313         bool const success =
 314                 theConverters().convert(&buffer, temp_file, abs_to_file,
 315                                    params.filename, from_format, to_format, el,
 316                                    Converters::try_default | Converters::try_cache);
 317
 318         if (!success) {
 319                 LYXERR(Debug::EXTERNAL, "external::updateExternal. "
 320                         << "Unable to convert from " << from_format << " to " << to_format);
 321         }
 322
 323         // return success
 324 }
 325
 326
 327 string const substituteCommands(InsetExternalParams const & params,
 328                                 string const & input, string const & format);
 329
 330 string const substituteOptions(InsetExternalParams const & params,
 331                                string const & input, string const & format);
 332
 333 } // namespace anon
 334
 335
 336 int writeExternal(InsetExternalParams const & params,
 337                   string const & format,
 338                   Buffer const & buffer, odocstream & os,
 339                   ExportData & exportdata,
 340                   bool external_in_tmpdir,
 341                   bool dryrun)
 342 {
 343         Template const * const et_ptr = getTemplatePtr(params);
 344         if (!et_ptr)
 345                 return 0;
 346         Template const & et = *et_ptr;
 347
 348         Template::Formats::const_iterator cit = et.formats.find(format);
 349         if (cit == et.formats.end()) {
 350                 LYXERR(Debug::EXTERNAL, "External template format '" << format
 351                         << "' not specified in template " << params.templatename());
 352                 return 0;
 353         }
 354
 355         if (!dryrun || contains(cit->second.product, "$$Contents"))
 356                 updateExternal(params, format, buffer, exportdata,
 357                                external_in_tmpdir, dryrun);
 358
 359         bool const use_latex_path = format == "LaTeX";
 360         string str = doSubstitution(params, buffer, cit->second.product,
 361                                     use_latex_path, external_in_tmpdir);
 362
 363         string const absname = makeAbsPath(
 364                 params.filename.outputFileName(buffer.filePath()), buffer.filePath()).absFileName();
 365
 366         if (!external_in_tmpdir && !isValidLaTeXFilename(absname)) {
 367                 lyx::frontend::Alert::warning(_("Invalid filename"),
 368                                               _("The following filename is likely to cause trouble "
 369                                                 "when running the exported file through LaTeX: ") +
 370                                               from_utf8(absname));
 371         }
 372
 373         str = substituteCommands(params, str, format);
 374         str = substituteOptions(params, str, format);
 375         // FIXME UNICODE
 376         os << from_utf8(str);
 377         return int(count(str.begin(), str.end(),'\n'));
 378 }
 379
 380 namespace {
 381
 382 // Empty template, specialised below.
 383 template <typename TransformType>
 384 string const substituteIt(string const &,
 385                           TransformID,
 386                           string const &,
 387                           Template::Format const &,
 388                           InsetExternalParams const &);
 389
 390
 391 template <>
 392 string const substituteIt<TransformCommand>(string const & input,
 393                                             TransformID id,
 394                                             string const & /* formatname */,
 395                                             Template::Format const & format,
 396                                             InsetExternalParams const & params)
 397 {
 398         typedef map<TransformID, TransformStore> Transformers;
 399         Transformers::const_iterator it = format.command_transformers.find(id);
 400         if (it == format.command_transformers.end())
 401                 return input;
 402
 403         TransformStore const & store = it->second;
 404
 405         TransformCommand::ptr_type ptr;
 406         if (id == Rotate)
 407                 ptr = store.getCommandTransformer(params.rotationdata);
 408         else if (id == Resize)
 409                 ptr = store.getCommandTransformer(params.resizedata);
 410
 411         if (!ptr.get())
 412                 return input;
 413
 414         string result =
 415                 subst(input, ptr->front_placeholder(), ptr->front());
 416         return subst(result, ptr->back_placeholder(),  ptr->back());
 417 }
 418
 419
 420 template <>
 421 string const substituteIt<TransformOption>(string const & input,
 422                                            TransformID id,
 423                                            string const & fname,
 424                                            Template::Format const & format,
 425                                            InsetExternalParams const & params)
 426 {
 427         typedef map<TransformID, TransformStore> Transformers;
 428         Transformers::const_iterator it = format.option_transformers.find(id);
 429         if (it == format.option_transformers.end())
 430                 return input;
 431
 432         TransformStore const & store = it->second;
 433
 434         TransformOption::ptr_type ptr;
 435         switch (id) {
 436         case Clip:
 437                 ptr = store.getOptionTransformer(params.clipdata);
 438                 break;
 439         case Extra:
 440                 ptr = store.getOptionTransformer(params.extradata.get(fname));
 441                 break;
 442         case Rotate:
 443                 ptr = store.getOptionTransformer(params.rotationdata);
 444                 break;
 445         case Resize:
 446                 ptr = store.getOptionTransformer(params.resizedata);
 447                 break;
 448         }
 449
 450         if (!ptr.get())
 451                 return input;
 452
 453         return subst(input, ptr->placeholder(), ptr->option());
 454 }
 455
 456
 457 template <typename TransformerType>
 458 string const transformIt(InsetExternalParams const & params,
 459                          string const & s, string const & formatname)
 460 {
 461         Template const * const et = getTemplatePtr(params);
 462         if (!et || et->transformIds.empty())
 463                 return s;
 464
 465         Template::Formats::const_iterator fit = et->formats.find(formatname);
 466         if (fit == et->formats.end())
 467                 return s;
 468
 469         string result = s;
 470         Template::Format const & format =  fit->second;
 471
 472         typedef vector<TransformID> TransformsIDs;
 473         TransformsIDs::const_iterator it  = et->transformIds.begin();
 474         TransformsIDs::const_iterator end = et->transformIds.end();
 475         for (; it != end; ++it) {
 476                 result = substituteIt<TransformerType>(result, *it, formatname,
 477                                                        format, params);
 478         }
 479         return result;
 480 }
 481
 482
 483 string const substituteCommands(InsetExternalParams const & params,
 484                                 string const & input, string const & format)
 485 {
 486         return transformIt<TransformCommand>(params, input, format);
 487 }
 488
 489
 490 string const substituteOption(InsetExternalParams const & params,
 491                               string const & input, string const & format)
 492 {
 493         string opt = transformIt<TransformOption>(params, input, format);
 494
 495         if (format == "LaTeX" || format == "PDFLaTeX")
 496                 return sanitizeLatexOption(opt);
 497         if (format == "DocBook")
 498                 return sanitizeDocBookOption(opt);
 499         return opt;
 500 }
 501
 502
 503 string const substituteOptions(InsetExternalParams const & params,
 504                                string const & input, string const & format)
 505 {
 506         string output = input;
 507
 508         Template const * const et = getTemplatePtr(params);
 509         if (!et || et->transformIds.empty())
 510                 return output;
 511
 512         Template::Formats::const_iterator fit = et->formats.find(format);
 513         if (fit == et->formats.end() || fit->second.options.empty())
 514                 return output;
 515
 516         typedef vector<Template::Option> Options;
 517         Options const & options = fit->second.options;
 518         Options::const_iterator it  = options.begin();
 519         Options::const_iterator end = options.end();
 520         for (; it != end; ++it) {
 521                 string const opt = substituteOption(params, it->option, format);
 522                 string const placeholder = "$$" + it->name;
 523                 output = subst(output, placeholder, opt);
 524         }
 525
 526         return output;
 527 }
 528
 529 } // namespace anon
 530
 531 } // namespace external
 532
 533 } // namespace lyx