src/support/Package.cpp

   1 // -*- C++ -*-
   2 /**
   3  * \file package.cpp
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Angus Leeming
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "support/Package.h"
  15
  16 #include "support/debug.h"
  17 #include "support/environment.h"
  18 #include "support/ExceptionMessage.h"
  19 #include "support/filetools.h"
  20 #include "support/gettext.h"
  21 #include "support/lstrings.h"
  22 #include "support/os.h"
  23
  24 #if defined (USE_WINDOWS_PACKAGING)
  25 # include "support/os_win32.h"
  26 #endif
  27
  28
  29 #include <list>
  30
  31 #if !defined (USE_WINDOWS_PACKAGING) && \
  32     !defined (USE_MACOSX_PACKAGING) && \
  33     !defined (USE_POSIX_PACKAGING)
  34 #error USE_FOO_PACKAGING must be defined for FOO = WINDOWS, MACOSX or POSIX.
  35 #endif
  36
  37 #if defined (USE_MACOSX_PACKAGING)
  38 # include <CoreServices/CoreServices.h> // FSFindFolder, FSRefMakePath
  39 #endif
  40
  41 using namespace std;
  42
  43 namespace lyx {
  44 namespace support {
  45
  46 namespace {
  47
  48 Package package_;
  49 bool initialised_ = false;
  50
  51 } // namespace anon
  52
  53
  54 void init_package(string const & command_line_arg0,
  55                   string const & command_line_system_support_dir,
  56                   string const & command_line_user_support_dir,
  57                   exe_build_dir_to_top_build_dir top_build_dir_location)
  58 {
  59         // Can do so only once.
  60         if (initialised_)
  61                 return;
  62
  63         package_ = Package(command_line_arg0,
  64                            command_line_system_support_dir,
  65                            command_line_user_support_dir,
  66                            top_build_dir_location);
  67         initialised_ = true;
  68 }
  69
  70
  71 Package const & package()
  72 {
  73         // Commented out because package().locale_dir() can be called
  74         // from the message translation code in Messages.cpp before
  75         // init_package() is called. Lars is on the case...
  76         // LASSERT(initialised_, /**/);
  77         return package_;
  78 }
  79
  80
  81 namespace {
  82
  83 FileName const abs_path_from_binary_name(string const & exe);
  84
  85 void buildDirs(FileName const & abs_binary,
  86         exe_build_dir_to_top_build_dir top_build_dir_location,
  87         FileName &, FileName &);
  88
  89 FileName const get_document_dir(FileName const & home_dir);
  90
  91 FileName const get_home_dir();
  92
  93 FileName const get_locale_dir(FileName const & system_support_dir);
  94
  95 FileName const get_system_support_dir(FileName const & abs_binary,
  96                                     string const & command_line_system_support_dir);
  97
  98 FileName const get_default_user_support_dir(FileName const & home_dir);
  99
 100 bool userSupportDir(FileName const & default_user_support_dir,
 101                      string const & command_line_user_support_dir, FileName & result);
 102
 103
 104 string const & with_version_suffix();
 105
 106 } // namespace anon
 107
 108
 109 Package::Package(string const & command_line_arg0,
 110                  string const & command_line_system_support_dir,
 111                  string const & command_line_user_support_dir,
 112                  exe_build_dir_to_top_build_dir top_build_dir_location)
 113         : explicit_user_support_dir_(false)
 114 {
 115         home_dir_ = get_home_dir();
 116         // Specification of temp_dir_ may be reset by LyXRC,
 117         // but the default is fixed for a given OS.
 118         system_temp_dir_ = FileName::tempPath();
 119         temp_dir_ = system_temp_dir_;
 120         document_dir_ = get_document_dir(home_dir_);
 121
 122         FileName const abs_binary = abs_path_from_binary_name(command_line_arg0);
 123         binary_dir_ = FileName(onlyPath(abs_binary.absFilename()));
 124
 125         // Is LyX being run in-place from the build tree?
 126         buildDirs(abs_binary, top_build_dir_location,
 127                 build_support_dir_, system_support_dir_);
 128
 129         if (build_support_dir_.empty())
 130                 system_support_dir_ =
 131                         get_system_support_dir(abs_binary,
 132                                                command_line_system_support_dir);
 133
 134         locale_dir_ = get_locale_dir(system_support_dir_);
 135
 136         FileName const default_user_support_dir =
 137                 get_default_user_support_dir(home_dir_);
 138
 139         explicit_user_support_dir_ = userSupportDir(default_user_support_dir,
 140                                      command_line_user_support_dir, user_support_dir_);
 141
 142         FileName const configure_script(addName(system_support().absFilename(), "configure.py"));
 143         configure_command_ = os::python() + ' ' +
 144                         quoteName(configure_script.toFilesystemEncoding(), quote_python) +
 145                         with_version_suffix();
 146
 147         LYXERR(Debug::INIT, "<package>\n"
 148                 << "\tbinary_dir " << binary_dir().absFilename() << '\n'
 149                 << "\tsystem_support " << system_support().absFilename() << '\n'
 150                 << "\tbuild_support " << build_support().absFilename() << '\n'
 151                 << "\tuser_support " << user_support().absFilename() << '\n'
 152                 << "\tlocale_dir " << locale_dir().absFilename() << '\n'
 153                 << "\tdocument_dir " << document_dir().absFilename() << '\n'
 154                 << "\ttemp_dir " << temp_dir().absFilename() << '\n'
 155                 << "\thome_dir " << home_dir().absFilename() << '\n'
 156                 << "</package>\n");
 157 }
 158
 159
 160 void Package::set_temp_dir(FileName const & temp_dir) const
 161 {
 162         if (temp_dir.empty())
 163                 temp_dir_ = system_temp_dir_;
 164         else
 165                 temp_dir_ = temp_dir;
 166 }
 167
 168
 169 namespace {
 170
 171 // These next functions contain the stuff that is substituted at
 172 // configuration-time.
 173 FileName const hardcoded_localedir()
 174 {
 175         // FIXME UNICODE
 176         // The build system needs to make sure that this is in utf8 encoding.
 177         return FileName(LYX_ABS_INSTALLED_LOCALEDIR);
 178 }
 179
 180
 181 FileName const hardcoded_system_support_dir()
 182 {
 183         // FIXME UNICODE
 184         // The build system needs to make sure that this is in utf8 encoding.
 185         return FileName(LYX_ABS_INSTALLED_DATADIR);
 186 }
 187
 188
 189 string const & with_version_suffix()
 190 {
 191         static string const program_suffix = PROGRAM_SUFFIX;
 192         static string const with_version_suffix =
 193                 " --with-version-suffix=" PROGRAM_SUFFIX;
 194         return program_suffix.empty() ? program_suffix : with_version_suffix;
 195 }
 196
 197 } // namespace anon
 198
 199
 200 FileName const & Package::top_srcdir()
 201 {
 202         // FIXME UNICODE
 203         // The build system needs to make sure that this is in utf8 encoding.
 204         static FileName const dir(LYX_ABS_TOP_SRCDIR);
 205         return dir;
 206 }
 207
 208
 209 namespace {
 210
 211 bool check_command_line_dir(string const & dir,
 212                             string const & file,
 213                             string const & command_line_switch);
 214
 215 FileName const extract_env_var_dir(string const & env_var);
 216
 217 bool check_env_var_dir(FileName const & dir,
 218                        string const & env_var);
 219
 220 bool check_env_var_dir(FileName const & dir,
 221                        string const & file,
 222                        string const & env_var);
 223
 224 string const relative_locale_dir();
 225
 226 string const relative_system_support_dir();
 227
 228
 229 /**
 230  * Convert \p name to internal path and strip a trailing slash, since it
 231  * comes from user input (commandline or environment).
 232  * \p name is encoded in utf8.
 233  */
 234 string const fix_dir_name(string const & name)
 235 {
 236         return rtrim(os::internal_path(name), "/");
 237 }
 238
 239
 240 FileName buildSupportDir(string const & binary_dir,
 241                       exe_build_dir_to_top_build_dir top_build_dir_location)
 242 {
 243         string indirection;
 244         switch (top_build_dir_location) {
 245         case top_build_dir_is_one_level_up:
 246                 indirection = "../lib";
 247                 break;
 248         case top_build_dir_is_two_levels_up:
 249                 indirection = "../../lib";
 250                 break;
 251         }
 252         return FileName(addPath(binary_dir, indirection));
 253 }
 254
 255
 256 void buildDirs(FileName const & abs_binary,
 257   exe_build_dir_to_top_build_dir top_build_dir_location,
 258         FileName & build_support_dir, FileName & system_support_dir)
 259 {
 260         string const check_text = "Checking whether LyX is run in place...";
 261
 262         // We're looking for "Makefile" in a directory
 263         //   binary_dir/../lib
 264         // We're also looking for "chkconfig.ltx" in a directory
 265         //   top_srcdir()/lib
 266         // If both are found, then we're running LyX in-place.
 267
 268         // Note that the name of the lyx binary may be a symbolic link.
 269         // If that is the case, then we follow the links too.
 270         FileName binary = abs_binary;
 271         while (true) {
 272                 // Try and find "lyxrc.defaults".
 273                 string binary_dir = onlyPath(binary.absFilename());
 274                 build_support_dir = buildSupportDir(binary_dir, top_build_dir_location);
 275                 if (!fileSearch(build_support_dir.absFilename(), "Makefile").empty()) {
 276                         // Try and find "chkconfig.ltx".
 277                         system_support_dir =
 278                                 FileName(addPath(Package::top_srcdir().absFilename(), "lib"));
 279
 280                         if (!fileSearch(system_support_dir.absFilename(), "chkconfig.ltx").empty()) {
 281                                 LYXERR(Debug::INIT, check_text << " yes");
 282                                 return;
 283                         }
 284                 }
 285
 286                 // Check whether binary is a symbolic link.
 287                 // If so, resolve it and repeat the exercise.
 288                 if (!binary.isSymLink())
 289                         break;
 290
 291                 FileName link;
 292                 if (readLink(binary, link)) {
 293                         binary = link;
 294                 } else {
 295                         // Unable to resolve the link.
 296                         break;
 297                 }
 298         }
 299
 300         LYXERR(Debug::INIT, check_text << " no");
 301         system_support_dir = FileName();
 302         build_support_dir = FileName();
 303 }
 304
 305
 306 // Specification of document_dir_ may be reset by LyXRC,
 307 // but the default is fixed for a given OS.
 308 FileName const get_document_dir(FileName const & home_dir)
 309 {
 310 #if defined (USE_WINDOWS_PACKAGING)
 311         (void)home_dir; // Silence warning about unused variable.
 312         os::GetFolderPath win32_folder_path;
 313         return FileName(win32_folder_path(os::GetFolderPath::PERSONAL));
 314 #else // Posix-like.
 315         return home_dir;
 316 #endif
 317 }
 318
 319
 320 // The specification of home_dir_ is fixed for a given OS.
 321 // A typical example on Windows: "C:/Documents and Settings/USERNAME"
 322 // and on a Posix-like machine: "/home/USERNAME".
 323 FileName const get_home_dir()
 324 {
 325 #if defined (USE_WINDOWS_PACKAGING)
 326         string const home_dir = getEnv("USERPROFILE");
 327 #else // Posix-like.
 328         string const home_dir = getEnv("HOME");
 329 #endif
 330
 331         return FileName(fix_dir_name(home_dir));
 332 }
 333
 334
 335 // Several sources are probed to ascertain the locale directory.
 336 // The only requirement is that the result is indeed a directory.
 337 FileName const get_locale_dir(FileName const & system_support_dir)
 338 {
 339         // 1. Use the "LYX_LOCALEDIR" environment variable.
 340         FileName const path_env = extract_env_var_dir("LYX_LOCALEDIR");
 341         if (!path_env.empty() && check_env_var_dir(path_env, "LYX_LOCALEDIR"))
 342                 return path_env;
 343
 344         // 2. Search for system_support_dir / <relative locale dir>
 345         // The <relative locale dir> is OS-dependent. (On Unix, it will
 346         // be "../locale/".)
 347         FileName path(addPath(system_support_dir.absFilename(),
 348                 relative_locale_dir()));
 349
 350         if (path.exists() && path.isDirectory())
 351                 return path;
 352
 353         // 3. Fall back to the hard-coded LOCALEDIR.
 354         path = hardcoded_localedir();
 355         if (path.exists() && path.isDirectory())
 356                 return path;
 357
 358         return FileName();
 359 }
 360
 361
 362 // Extracts the absolute path from the foo of "-sysdir foo" or "-userdir foo"
 363 FileName const abs_path_from_command_line(string const & command_line)
 364 {
 365         if (command_line.empty())
 366                 return FileName();
 367
 368         string const str_path = fix_dir_name(command_line);
 369         return makeAbsPath(str_path);
 370 }
 371
 372
 373 // Does the grunt work for abs_path_from_binary_name()
 374 FileName const get_binary_path(string const & exe)
 375 {
 376 #if defined (USE_WINDOWS_PACKAGING)
 377         // The executable may have been invoked either with or
 378         // without the .exe extension.
 379         // Ensure that it is present.
 380         string const as_internal_path = os::internal_path(exe);
 381         string const exe_path = suffixIs(as_internal_path, ".exe") ?
 382                 as_internal_path : as_internal_path + ".exe";
 383 #else
 384         string const exe_path = os::internal_path(exe);
 385 #endif
 386         if (FileName::isAbsolute(exe_path))
 387                 return FileName(exe_path);
 388
 389         // Two possibilities present themselves.
 390         // 1. The binary is relative to the CWD.
 391         FileName const abs_exe_path = makeAbsPath(exe_path);
 392         if (abs_exe_path.exists())
 393                 return abs_exe_path;
 394
 395         // 2. exe must be the name of the binary only and it
 396         // can be found on the PATH.
 397         string const exe_name = onlyFilename(exe_path);
 398         if (exe_name != exe_path)
 399                 return FileName();
 400
 401         vector<string> const path = getEnvPath("PATH");
 402         vector<string>::const_iterator it = path.begin();
 403         vector<string>::const_iterator const end = path.end();
 404         for (; it != end; ++it) {
 405                 // This will do nothing if *it is already absolute.
 406                 string const exe_dir = makeAbsPath(*it).absFilename();
 407
 408                 FileName const exe_path(addName(exe_dir, exe_name));
 409                 if (exe_path.exists())
 410                         return exe_path;
 411         }
 412
 413         // Didn't find anything.
 414         return FileName();
 415 }
 416
 417
 418 // Extracts the absolute path to the binary name received as argv[0].
 419 FileName const abs_path_from_binary_name(string const & exe)
 420 {
 421         FileName const abs_binary = get_binary_path(exe);
 422         if (abs_binary.empty()) {
 423                 // FIXME UNICODE
 424                 throw ExceptionMessage(ErrorException,
 425                         _("LyX binary not found"),
 426                         bformat(_("Unable to determine the path to the LyX binary from the command line %1$s"),
 427                                 from_utf8(exe)));
 428         }
 429         return abs_binary;
 430 }
 431
 432
 433 // A plethora of directories is searched to ascertain the system
 434 // lyxdir which is defined as the first directory to contain
 435 // "chkconfig.ltx".
 436 FileName const
 437 get_system_support_dir(FileName const & abs_binary,
 438                   string const & command_line_system_support_dir)
 439 {
 440         string const chkconfig_ltx = "chkconfig.ltx";
 441
 442         // searched_dirs is used for diagnostic purposes only in the case
 443         // that "chkconfig.ltx" is not found.
 444         list<FileName> searched_dirs;
 445
 446         // 1. Use the -sysdir command line parameter.
 447         FileName path = abs_path_from_command_line(command_line_system_support_dir);
 448         if (!path.empty()) {
 449                 searched_dirs.push_back(path);
 450                 if (check_command_line_dir(path.absFilename(), chkconfig_ltx, "-sysdir"))
 451                         return path;
 452         }
 453
 454         // 2. Use the "LYX_DIR_${major}${minor}x" environment variable.
 455         path = extract_env_var_dir(LYX_DIR_VER);
 456         if (!path.empty()) {
 457                 searched_dirs.push_back(path);
 458                 if (check_env_var_dir(path, chkconfig_ltx, LYX_DIR_VER))
 459                         return path;
 460         }
 461
 462         // 3. Search relative to the lyx binary.
 463         // We're looking for "chkconfig.ltx" in a directory
 464         //   OnlyPath(abs_binary) / <relative dir> / PACKAGE /
 465         // PACKAGE is hardcoded in config.h. Eg "lyx" or "lyx-1.3.6cvs".
 466         // <relative dir> is OS-dependent; on Unix, it will be "../share/".
 467         string const relative_lyxdir = relative_system_support_dir();
 468
 469         // One subtlety to be aware of. The name of the lyx binary may be
 470         // a symbolic link. If that is the case, then we follow the links too.
 471         FileName binary = abs_binary;
 472         while (true) {
 473                 // Try and find "chkconfig.ltx".
 474                 string const binary_dir = onlyPath(binary.absFilename());
 475
 476                 FileName const lyxdir(addPath(binary_dir, relative_lyxdir));
 477                 searched_dirs.push_back(lyxdir);
 478
 479                 if (!fileSearch(lyxdir.absFilename(), chkconfig_ltx).empty()) {
 480                         // Success! "chkconfig.ltx" has been found.
 481                         return lyxdir;
 482                 }
 483
 484                 // Check whether binary is a symbolic link.
 485                 // If so, resolve it and repeat the exercise.
 486                 if (!binary.isSymLink())
 487                         break;
 488
 489                 FileName link;
 490                 if (readLink(binary, link)) {
 491                         binary = link;
 492                 } else {
 493                         // Unable to resolve the link.
 494                         break;
 495                 }
 496         }
 497
 498         // 4. Repeat the exercise on the directory itself.
 499         FileName binary_dir(onlyPath(abs_binary.absFilename()));
 500         while (true) {
 501                 // This time test whether the directory is a symbolic link
 502                 // *before* looking for "chkconfig.ltx".
 503                 // (We've looked relative to the original already.)
 504                 if (!binary.isSymLink())
 505                         break;
 506
 507                 FileName link;
 508                 if (readLink(binary_dir, link)) {
 509                         binary_dir = link;
 510                 } else {
 511                         // Unable to resolve the link.
 512                         break;
 513                 }
 514
 515                 // Try and find "chkconfig.ltx".
 516                 FileName const lyxdir(addPath(binary_dir.absFilename(),
 517                         relative_lyxdir));
 518                 searched_dirs.push_back(lyxdir);
 519
 520                 if (!fileSearch(lyxdir.absFilename(), chkconfig_ltx).empty()) {
 521                         // Success! "chkconfig.ltx" has been found.
 522                         return lyxdir;
 523                 }
 524         }
 525
 526         // 5. In desparation, try the hard-coded system support dir.
 527         path = hardcoded_system_support_dir();
 528         if (!fileSearch(path.absFilename(), chkconfig_ltx).empty())
 529                 return path;
 530
 531         // Everything has failed :-(
 532         // So inform the user and exit.
 533         string searched_dirs_str;
 534         typedef list<FileName>::const_iterator iterator;
 535         iterator const begin = searched_dirs.begin();
 536         iterator const end = searched_dirs.end();
 537         for (iterator it = begin; it != end; ++it) {
 538                 if (it != begin)
 539                         searched_dirs_str += "\n\t";
 540                 searched_dirs_str += it->absFilename();
 541         }
 542
 543         // FIXME UNICODE
 544         throw ExceptionMessage(ErrorException, _("No system directory"),
 545                 bformat(_("Unable to determine the system directory "
 546                                 "having searched\n"
 547                                 "\t%1$s\n"
 548                                 "Use the '-sysdir' command line parameter or "
 549                                 "set the environment variable\n%2$s "
 550                                 "to the LyX system directory containing the "
 551                                 "file `chkconfig.ltx'."),
 552                           from_utf8(searched_dirs_str), from_ascii(LYX_DIR_VER)));
 553
 554         // Keep the compiler happy.
 555         return FileName();
 556 }
 557
 558
 559 // Returns the absolute path to the user lyxdir, together with a flag
 560 // indicating whether this directory was specified explicitly (as -userdir
 561 // or through an environment variable) or whether it was deduced.
 562 bool userSupportDir(FileName const & default_user_support_dir,
 563         string const & command_line_user_support_dir, FileName & result)
 564 {
 565         // 1. Use the -userdir command line parameter.
 566         result = abs_path_from_command_line(command_line_user_support_dir);
 567         if (!result.empty())
 568                 return true;
 569
 570         // 2. Use the LYX_USERDIR_${major}${minor}x environment variable.
 571         result = extract_env_var_dir(LYX_USERDIR_VER);
 572         if (!result.empty())
 573                 return true;
 574
 575         // 3. Use the OS-dependent default_user_support_dir
 576         result = default_user_support_dir;
 577         return false;
 578 }
 579
 580
 581 // $HOME/.lyx on POSIX but on Win32 it will be something like
 582 // "C:/Documents and Settings/USERNAME/Application Data/LyX"
 583 FileName const get_default_user_support_dir(FileName const & home_dir)
 584 {
 585 #if defined (USE_WINDOWS_PACKAGING)
 586         (void)home_dir; // Silence warning about unused variable.
 587
 588         os::GetFolderPath win32_folder_path;
 589         return FileName(addPath(win32_folder_path(os::GetFolderPath::APPDATA), PACKAGE));
 590
 591 #elif defined (USE_MACOSX_PACKAGING)
 592         (void)home_dir; // Silence warning about unused variable.
 593
 594         FSRef fsref;
 595         OSErr const error_code =
 596                 FSFindFolder(kUserDomain, kApplicationSupportFolderType,
 597                              kDontCreateFolder, &fsref);
 598         if (error_code != 0)
 599                 return FileName();
 600
 601         // FSRefMakePath returns the result in utf8
 602         char store[PATH_MAX + 1];
 603         OSStatus const status_code =
 604                 FSRefMakePath(&fsref,
 605                               reinterpret_cast<UInt8*>(store), PATH_MAX);
 606         if (status_code != 0)
 607                 return FileName();
 608
 609         return FileName(addPath(reinterpret_cast<char const *>(store), PACKAGE));
 610
 611 #else // USE_POSIX_PACKAGING
 612         return FileName(addPath(home_dir.absFilename(), string(".") + PACKAGE));
 613 #endif
 614 }
 615
 616
 617 // Check that directory @c dir contains @c file.
 618 // Else emit an error message about an invalid @c command_line_switch.
 619 bool check_command_line_dir(string const & dir,
 620                             string const & file,
 621                             string const & command_line_switch)
 622 {
 623         FileName const abs_path = fileSearch(dir, file);
 624         if (abs_path.empty()) {
 625                 // FIXME UNICODE
 626                 throw ExceptionMessage(ErrorException, _("File not found"), bformat(
 627                         _("Invalid %1$s switch.\nDirectory %2$s does not contain %3$s."),
 628                         from_utf8(command_line_switch), from_utf8(dir),
 629                         from_utf8(file)));
 630         }
 631
 632         return !abs_path.empty();
 633 }
 634
 635
 636 // The environment variable @c env_var expands to a (single) file path.
 637 FileName const extract_env_var_dir(string const & env_var)
 638 {
 639         string const dir = fix_dir_name(getEnv(env_var));
 640         return dir.empty() ? FileName() : makeAbsPath(dir);
 641 }
 642
 643
 644 // Check that directory @c dir contains @c file.
 645 // Else emit a warning about an invalid @c env_var.
 646 bool check_env_var_dir(FileName const & dir,
 647                        string const & file,
 648                        string const & env_var)
 649 {
 650         FileName const abs_path = fileSearch(dir.absFilename(), file);
 651         if (abs_path.empty()) {
 652                 // FIXME UNICODE
 653                 throw ExceptionMessage(WarningException, _("File not found"), bformat(
 654                         _("Invalid %1$s environment variable.\n"
 655                                 "Directory %2$s does not contain %3$s."),
 656                         from_utf8(env_var), from_utf8(dir.absFilename()),
 657                         from_utf8(file)));
 658         }
 659
 660         return !abs_path.empty();
 661 }
 662
 663
 664 // Check that directory @c dir is indeed a directory.
 665 // Else emit a warning about an invalid @c env_var.
 666 bool check_env_var_dir(FileName const & dir,
 667                        string const & env_var)
 668 {
 669         bool const success = dir.exists() && dir.isDirectory();
 670
 671         if (!success) {
 672                 // Put this string on a single line so that the gettext
 673                 // search mechanism in po/Makefile.in.in will register
 674                 // Package.cpp.in as a file containing strings that need
 675                 // translation.
 676                 // FIXME UNICODE
 677                 docstring const fmt =
 678                         _("Invalid %1$s environment variable.\n%2$s is not a directory.");
 679
 680                 throw ExceptionMessage(WarningException, _("Directory not found"), bformat(
 681                         fmt, from_utf8(env_var), from_utf8(dir.absFilename())));
 682         }
 683
 684         return success;
 685 }
 686
 687
 688 // The locale directory relative to the LyX system directory.
 689 string const relative_locale_dir()
 690 {
 691 #if defined (USE_WINDOWS_PACKAGING) || defined (USE_MACOSX_PACKAGING)
 692         return "locale/";
 693 #else
 694         return "../locale/";
 695 #endif
 696 }
 697
 698
 699 // The system lyxdir is relative to the directory containing the LyX binary.
 700 string const relative_system_support_dir()
 701 {
 702         string result;
 703
 704 #if defined (USE_WINDOWS_PACKAGING) || defined (USE_MACOSX_PACKAGING)
 705         result = "../Resources/";
 706 #else // Posix-like.
 707         result = addPath("../share/", PACKAGE);
 708 #endif
 709
 710         return result;
 711 }
 712
 713 } // namespace anon
 714
 715 } // namespace support
 716 } // namespace lyx