src/support/package.C.in

   1 // -*- C++ -*-
   2 /**
   3  * \file package.C
   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  * Warning! This file is autogenerated from package.C.in.
  12  * All changes to this file will be lost.
  13  */
  14
  15 #include <config.h>
  16
  17 #include "support/package.h"
  18
  19 #include "debug.h"
  20 #include "gettext.h"
  21
  22 #include "support/environment.h"
  23 #include "support/filetools.h"
  24 #include "support/lstrings.h"
  25 #include "support/ExceptionMessage.h"
  26 #include "support/os.h"
  27
  28 #if defined (USE_WINDOWS_PACKAGING)
  29 # include "support/os_win32.h"
  30 #endif
  31
  32 #include <boost/filesystem/operations.hpp>
  33 #include <boost/tuple/tuple.hpp>
  34
  35 #include <list>
  36 #include <utility>
  37
  38 #if !defined (USE_WINDOWS_PACKAGING) && \
  39     !defined (USE_MACOSX_PACKAGING) && \
  40     !defined (USE_POSIX_PACKAGING)
  41 #error USE_FOO_PACKAGING must be defined for FOO = WINDOWS, MACOSX or POSIX.
  42 #endif
  43
  44 #if defined (USE_MACOSX_PACKAGING)
  45 # include <CoreServices/CoreServices.h> // FSFindFolder, FSRefMakePath
  46 #endif
  47
  48 using std::string;
  49
  50 namespace fs = boost::filesystem;
  51
  52 namespace lyx {
  53 namespace support {
  54
  55 namespace {
  56
  57 Package package_;
  58 bool initialised_ = false;
  59
  60 } // namespace anon
  61
  62
  63 void init_package(string const & command_line_arg0,
  64                   string const & command_line_system_support_dir,
  65                   string const & command_line_user_support_dir,
  66                   exe_build_dir_to_top_build_dir top_build_dir_location)
  67 {
  68         // Can do so only once.
  69         if (initialised_)
  70                 return;
  71
  72         package_ = Package(command_line_arg0,
  73                            command_line_system_support_dir,
  74                            command_line_user_support_dir,
  75                            top_build_dir_location);
  76         initialised_ = true;
  77 }
  78
  79
  80 Package const & package()
  81 {
  82         // Commented out because package().locale_dir() can be called
  83         // from the message translation code in messages.C before
  84         // init_package() is called. Lars is on the case...
  85         // BOOST_ASSERT(initialised_);
  86         return package_;
  87 }
  88
  89
  90 namespace {
  91
  92 string const abs_path_from_binary_name(string const & exe);
  93
  94 std::pair<string, string> const
  95 get_build_dirs(string const & abs_binary,
  96                exe_build_dir_to_top_build_dir top_build_dir_location);
  97
  98 string const get_document_dir(string const & home_dir);
  99
 100 string const get_home_dir();
 101
 102 string const get_locale_dir(string const & system_support_dir);
 103
 104 string const get_system_support_dir(string const & abs_binary,
 105                                     string const & command_line_system_support_dir);
 106
 107 string const get_temp_dir();
 108
 109 string const get_default_user_support_dir(string const & home_dir);
 110
 111 std::pair<string, bool> const
 112 get_user_support_dir(string const & default_user_support_dir,
 113                      string const & command_line_user_support_dir);
 114
 115
 116 string const & with_version_suffix();
 117
 118 } // namespace anon
 119
 120
 121 Package::Package(string const & command_line_arg0,
 122                  string const & command_line_system_support_dir,
 123                  string const & command_line_user_support_dir,
 124                  exe_build_dir_to_top_build_dir top_build_dir_location)
 125         : explicit_user_support_dir_(false)
 126 {
 127         home_dir_ = get_home_dir();
 128         system_temp_dir_ = get_temp_dir();
 129         temp_dir_ = system_temp_dir_;
 130         document_dir_ = get_document_dir(home_dir_);
 131
 132         string const abs_binary = abs_path_from_binary_name(command_line_arg0);
 133         binary_dir_ = onlyPath(abs_binary);
 134
 135         // Is LyX being run in-place from the build tree?
 136         boost::tie(build_support_dir_, system_support_dir_) =
 137                 get_build_dirs(abs_binary, top_build_dir_location);
 138
 139         if (build_support_dir_.empty())
 140                 system_support_dir_ =
 141                         get_system_support_dir(abs_binary,
 142                                                command_line_system_support_dir);
 143
 144         locale_dir_ = get_locale_dir(system_support_dir_);
 145
 146         string const default_user_support_dir =
 147                 get_default_user_support_dir(home_dir_);
 148         boost::tie(user_support_dir_, explicit_user_support_dir_) =
 149                 get_user_support_dir(default_user_support_dir,
 150                                      command_line_user_support_dir);
 151
 152         string const configure_script = addName(system_support(), "configure.py");
 153         configure_command_ = os::python() + ' ' + quoteName(configure_script)
 154                                        + with_version_suffix();
 155
 156         lyxerr[Debug::INIT]
 157                 << "<package>\n"
 158                 << "\tbinary_dir " << binary_dir() << '\n'
 159                 << "\tsystem_support " << system_support() << '\n'
 160                 << "\tbuild_support " << build_support() << '\n'
 161                 << "\tuser_support " << user_support() << '\n'
 162                 << "\tlocale_dir " << locale_dir() << '\n'
 163                 << "\tdocument_dir " << document_dir() << '\n'
 164                 << "\ttemp_dir " << temp_dir() << '\n'
 165                 << "\thome_dir " << home_dir() << '\n'
 166                 << "</package>\n" << std::endl;
 167 }
 168
 169
 170 namespace {
 171
 172 // These next three functions contain the stuff that is substituted at
 173 // configuration-time.
 174 string const top_srcdir()
 175 {
 176         static string const dir("@TOP_SRCDIR@");
 177         return dir;
 178 }
 179
 180
 181 string const hardcoded_localedir()
 182 {
 183         return string("@LOCALEDIR@");
 184 }
 185
 186
 187 string const hardcoded_system_support_dir()
 188 {
 189         return string("@LYX_DIR@");
 190 }
 191
 192
 193 string const & with_version_suffix()
 194 {
 195         static string const program_suffix("@PROGRAM_SUFFIX@");
 196         static string const
 197                 with_version_suffix(" --with-version-suffix=@PROGRAM_SUFFIX@");
 198         return program_suffix.empty() ? program_suffix : with_version_suffix;
 199 }
 200
 201 } // namespace anon
 202
 203
 204 string const & Package::top_srcdir() const
 205 {
 206         static string const dir("@TOP_SRCDIR@");
 207         return dir;
 208 }
 209
 210
 211 namespace {
 212
 213 bool check_command_line_dir(string const & dir,
 214                             string const & file,
 215                             string const & command_line_switch);
 216
 217 string const extract_env_var_dir(string const & env_var);
 218
 219 bool check_env_var_dir(string const & dir,
 220                        string const & env_var);
 221
 222 bool check_env_var_dir(string const & dir,
 223                        string const & file,
 224                        string const & env_var);
 225
 226 string const relative_locale_dir();
 227
 228 string const relative_system_support_dir();
 229
 230
 231 std::string const
 232 get_build_support_dir(std::string const & binary_dir,
 233                       exe_build_dir_to_top_build_dir top_build_dir_location)
 234 {
 235         string indirection;
 236         switch (top_build_dir_location) {
 237         case top_build_dir_is_one_level_up:
 238                 indirection = "../lib";
 239                 break;
 240         case top_build_dir_is_two_levels_up:
 241                 indirection = "../../lib";
 242                 break;
 243         }
 244
 245         return normalizePath(addPath(binary_dir, indirection));
 246 }
 247
 248
 249 std::pair<string, string> const
 250 get_build_dirs(string const & abs_binary,
 251                exe_build_dir_to_top_build_dir top_build_dir_location)
 252 {
 253         string const check_text = "Checking whether LyX is run in place...";
 254
 255         // We're looking for "Makefile" in a directory
 256         //   binary_dir/../lib
 257         // We're also looking for "chkconfig.ltx" in a directory
 258         //   top_srcdir()/lib
 259         // If both are found, then we're running LyX in-place.
 260
 261         // Note that the name of the lyx binary may be a symbolic link.
 262         // If that is the case, then we follow the links too.
 263         string binary = abs_binary;
 264         while (true) {
 265                 // Try and find "lyxrc.defaults".
 266                 string const binary_dir = onlyPath(binary);
 267                 string const build_support_dir =
 268                         get_build_support_dir(binary_dir, top_build_dir_location);
 269
 270                 if (!fileSearch(build_support_dir, "Makefile").empty()) {
 271                         // Try and find "chkconfig.ltx".
 272                         string const system_support_dir =
 273                                 addPath(top_srcdir(), "lib");
 274
 275                         if (!fileSearch(system_support_dir, "chkconfig.ltx").empty()) {
 276                                 lyxerr[Debug::INIT] << check_text << " yes"
 277                                                     << std::endl;
 278                                 return std::make_pair(build_support_dir, system_support_dir);
 279                         }
 280                 }
 281
 282                 // Check whether binary is a symbolic link.
 283                 // If so, resolve it and repeat the exercise.
 284                 if (!fs::symbolic_link_exists(FileName(binary).toFilesystemEncoding()))
 285                         break;
 286
 287                 string link;
 288                 if (readLink(binary, link, true)) {
 289                         binary = link;
 290                 } else {
 291                         // Unable to resolve the link.
 292                         break;
 293                 }
 294         }
 295
 296         lyxerr[Debug::INIT] << check_text << " no" << std::endl;
 297         return std::make_pair(string(), string());
 298 }
 299
 300
 301 // Specification of document_dir_ may be reset by LyXRC,
 302 // but the default is fixed for a given OS.
 303 string const get_document_dir(string const & home_dir)
 304 {
 305 #if defined (USE_WINDOWS_PACKAGING)
 306         (void)home_dir; // Silence warning about unused variable.
 307         os::GetFolderPath win32_folder_path;
 308         return win32_folder_path(os::GetFolderPath::PERSONAL);
 309 #else // Posix-like.
 310         return home_dir;
 311 #endif
 312 }
 313
 314
 315 // The specification of home_dir_ is fixed for a given OS.
 316 // A typical example on Windows: "C:/Documents and Settings/USERNAME"
 317 // and on a Posix-like machine: "/home/USERNAME".
 318 string const get_home_dir()
 319 {
 320 #if defined (USE_WINDOWS_PACKAGING)
 321         string const home_dir = getEnv("USERPROFILE");
 322 #else // Posix-like.
 323         string const home_dir = getEnv("HOME");
 324 #endif
 325
 326         return os::internal_path(home_dir);
 327 }
 328
 329
 330 // Several sources are probed to ascertain the locale directory.
 331 // The only requirement is that the result is indeed a directory.
 332 string const get_locale_dir(string const & system_support_dir)
 333 {
 334         // 1. Use the "LYX_LOCALEDIR" environment variable.
 335         string const path_env = extract_env_var_dir("LYX_LOCALEDIR");
 336         if (!path_env.empty() && check_env_var_dir(path_env, "LYX_LOCALEDIR"))
 337                 return path_env;
 338
 339         // 2. Search for system_support_dir / <relative locale dir>
 340         // The <relative locale dir> is OS-dependent. (On Unix, it will
 341         // be "../locale/".)
 342         FileName path(normalizePath(addPath(system_support_dir, relative_locale_dir())));
 343
 344         if (fs::exists(path.toFilesystemEncoding()) &&
 345             fs::is_directory(path.toFilesystemEncoding()))
 346                 return path.absFilename();
 347
 348         // 3. Fall back to the hard-coded LOCALEDIR.
 349         path = FileName(hardcoded_localedir());
 350         if (fs::exists(path.toFilesystemEncoding()) &&
 351             fs::is_directory(path.toFilesystemEncoding()))
 352                 return path.absFilename();
 353
 354         return string();
 355 }
 356
 357
 358 // Specification of temp_dir_ may be reset by LyXRC,
 359 // but the default is fixed for a given OS.
 360 string const get_temp_dir()
 361 {
 362 #if defined (USE_WINDOWS_PACKAGING)
 363         // Typical example: C:/TEMP/.
 364         char path[MAX_PATH];
 365         GetTempPath(MAX_PATH, path);
 366         return os::internal_path(path);
 367 #else // Posix-like.
 368         return "/tmp";
 369 #endif
 370 }
 371
 372
 373 // Extracts the absolute path from the foo of "-sysdir foo" or "-userdir foo"
 374 string const abs_path_from_command_line(string const & command_line)
 375 {
 376         if (command_line.empty())
 377                 return string();
 378
 379         string const path = os::internal_path(command_line);
 380         return os::is_absolute_path(path) ? path : makeAbsPath(path).absFilename();
 381 }
 382
 383
 384 // Does the grunt work for abs_path_from_binary_name()
 385 string const get_binary_path(string const & exe)
 386 {
 387 #if defined (USE_WINDOWS_PACKAGING)
 388         // The executable may have been invoked either with or
 389         // without the .exe extension.
 390         // Ensure that it is present.
 391         string const as_internal_path = os::internal_path(exe);
 392         string const exe_path = suffixIs(as_internal_path, ".exe") ?
 393                 as_internal_path : as_internal_path + ".exe";
 394 #else
 395         string const exe_path = os::internal_path(exe);
 396 #endif
 397         if (os::is_absolute_path(exe_path))
 398                 return exe_path;
 399
 400         // Two possibilities present themselves.
 401         // 1. The binary is relative to the CWD.
 402         string const abs_exe_path = makeAbsPath(exe_path).absFilename();
 403         if (fs::exists(FileName(abs_exe_path).toFilesystemEncoding()))
 404                 return abs_exe_path;
 405
 406         // 2. exe must be the name of the binary only and it
 407         // can be found on the PATH.
 408         string const exe_name = onlyFilename(exe_path);
 409         if (exe_name != exe_path)
 410                 return string();
 411
 412         std::vector<string> const path = getEnvPath("PATH");
 413         std::vector<string>::const_iterator it = path.begin();
 414         std::vector<string>::const_iterator const end = path.end();
 415         for (; it != end; ++it) {
 416                 // This will do nothing if *it is already absolute.
 417                 string const exe_dir = makeAbsPath(*it).absFilename();
 418
 419                 string const exe_path = addName(exe_dir, exe_name);
 420                 if (fs::exists(FileName(exe_path).toFilesystemEncoding()))
 421                         return exe_path;
 422         }
 423
 424         // Didn't find anything.
 425         return string();
 426 }
 427
 428
 429 // Extracts the absolute path to the binary name received as argv[0].
 430 string const abs_path_from_binary_name(string const & exe)
 431 {
 432         string const abs_binary = get_binary_path(exe);
 433         if (abs_binary.empty()) {
 434                 // FIXME UNICODE
 435                 throw ExceptionMessage(ErrorException,
 436                         _("LyX binary not found"),
 437                         bformat(_("Unable to determine the path to the LyX binary from the command line %1$s"),
 438                                 lyx::from_utf8(exe)));
 439         }
 440         return abs_binary;
 441 }
 442
 443
 444 // A plethora of directories is searched to ascertain the system
 445 // lyxdir which is defined as the first directory to contain
 446 // "chkconfig.ltx".
 447 string const
 448 get_system_support_dir(string const & abs_binary,
 449                   string const & command_line_system_support_dir)
 450 {
 451         string const chkconfig_ltx = "chkconfig.ltx";
 452
 453         // searched_dirs is used for diagnostic purposes only in the case
 454         // that "chkconfig.ltx" is not found.
 455         std::list<string> searched_dirs;
 456
 457         // 1. Use the -sysdir command line parameter.
 458         string path = abs_path_from_command_line(command_line_system_support_dir);
 459         if (!path.empty()) {
 460                 searched_dirs.push_back(path);
 461                 if (check_command_line_dir(path, chkconfig_ltx, "-sysdir"))
 462                         return path;
 463         }
 464
 465         // 2. Use the "LYX_DIR_15x" environment variable.
 466         path = extract_env_var_dir("LYX_DIR_15x");
 467         if (!path.empty()) {
 468                 searched_dirs.push_back(path);
 469                 if (check_env_var_dir(path, chkconfig_ltx, "LYX_DIR_15x"))
 470                         return path;
 471         }
 472
 473         // 3. Search relative to the lyx binary.
 474         // We're looking for "chkconfig.ltx" in a directory
 475         //   OnlyPath(abs_binary) / <relative dir> / PACKAGE /
 476         // PACKAGE is hardcoded in config.h. Eg "lyx" or "lyx-1.3.6cvs".
 477         // <relative dir> is OS-dependent; on Unix, it will be "../share/".
 478         string const relative_lyxdir = relative_system_support_dir();
 479
 480         // One subtlety to be aware of. The name of the lyx binary may be
 481         // a symbolic link. If that is the case, then we follow the links too.
 482         string binary = abs_binary;
 483         while (true) {
 484                 // Try and find "chkconfig.ltx".
 485                 string const binary_dir = onlyPath(binary);
 486
 487                 string const lyxdir =
 488                         normalizePath(addPath(binary_dir, relative_lyxdir));
 489                 searched_dirs.push_back(lyxdir);
 490
 491                 if (!fileSearch(lyxdir, chkconfig_ltx).empty()) {
 492                         // Success! "chkconfig.ltx" has been found.
 493                         return lyxdir;
 494                 }
 495
 496                 // Check whether binary is a symbolic link.
 497                 // If so, resolve it and repeat the exercise.
 498                 if (!fs::symbolic_link_exists(FileName(binary).toFilesystemEncoding()))
 499                         break;
 500
 501                 string link;
 502                 if (readLink(binary, link, true)) {
 503                         binary = link;
 504                 } else {
 505                         // Unable to resolve the link.
 506                         break;
 507                 }
 508         }
 509
 510         // 4. Repeat the exercise on the directory itself.
 511         string binary_dir = onlyPath(abs_binary);
 512         while (true) {
 513                 // This time test whether the directory is a symbolic link
 514                 // *before* looking for "chkconfig.ltx".
 515                 // (We've looked relative to the original already.)
 516                 if (!fs::symbolic_link_exists(FileName(binary).toFilesystemEncoding()))
 517                         break;
 518
 519                 string link;
 520                 if (readLink(binary_dir, link, true)) {
 521                         binary_dir = link;
 522                 } else {
 523                         // Unable to resolve the link.
 524                         break;
 525                 }
 526
 527                 // Try and find "chkconfig.ltx".
 528                 string const lyxdir =
 529                         normalizePath(addPath(binary_dir, relative_lyxdir));
 530                 searched_dirs.push_back(lyxdir);
 531
 532                 if (!fileSearch(lyxdir, chkconfig_ltx).empty()) {
 533                         // Success! "chkconfig.ltx" has been found.
 534                         return lyxdir;
 535                 }
 536         }
 537
 538         // 5. In desparation, try the hard-coded system support dir.
 539         path = hardcoded_system_support_dir();
 540         if (!fileSearch(path, chkconfig_ltx).empty())
 541                 return path;
 542
 543         // Everything has failed :-(
 544         // So inform the user and exit.
 545         string searched_dirs_str;
 546         typedef std::list<string>::const_iterator iterator;
 547         iterator const begin = searched_dirs.begin();
 548         iterator const end = searched_dirs.end();
 549         for (iterator it = begin; it != end; ++it) {
 550                 if (it != begin)
 551                         searched_dirs_str += "\n\t";
 552                 searched_dirs_str += *it;
 553         }
 554
 555         // FIXME UNICODE
 556         throw ExceptionMessage(ErrorException, _("No system directory"),
 557                 bformat(_("Unable to determine the system directory "
 558                                          "having searched\n"
 559                                          "\t%1$s\n"
 560                                          "Use the '-sysdir' command line parameter or "
 561                                          "set the environment variable LYX_DIR_15x to "
 562                                          "the LyX system directory containing the file "
 563                                          "`chkconfig.ltx'."),
 564                           lyx::from_utf8(searched_dirs_str)));
 565
 566         // Keep the compiler happy.
 567         return string();
 568 }
 569
 570
 571 // Returns the absolute path to the user lyxdir, together with a flag
 572 // indicating whether this directory was specified explicitly (as -userdir
 573 // or through an environment variable) or whether it was deduced.
 574 std::pair<string, bool> const
 575 get_user_support_dir(string const & default_user_support_dir,
 576                      string const & command_line_user_support_dir)
 577 {
 578         bool explicit_userdir = true;
 579
 580         // 1. Use the -userdir command line parameter.
 581         string path =
 582                 abs_path_from_command_line(command_line_user_support_dir);
 583         if (!path.empty())
 584                 return std::make_pair(path, explicit_userdir);
 585
 586         // 2. Use the LYX_USERDIR_15x environment variable.
 587         path = extract_env_var_dir("LYX_USERDIR_15x");
 588         if (!path.empty())
 589                 return std::make_pair(path, explicit_userdir);
 590
 591         // 3. Use the OS-dependent default_user_support_dir
 592         explicit_userdir = false;
 593         return std::make_pair(default_user_support_dir, explicit_userdir);
 594 }
 595
 596
 597 // $HOME/.lyx on POSIX but on Win32 it will be something like
 598 // "C:/Documents and Settings/USERNAME/Application Data/LyX"
 599 string const get_default_user_support_dir(string const & home_dir)
 600 {
 601 #if defined (USE_WINDOWS_PACKAGING)
 602         (void)home_dir; // Silence warning about unused variable.
 603
 604         os::GetFolderPath win32_folder_path;
 605         return addPath(win32_folder_path(os::GetFolderPath::APPDATA), PACKAGE);
 606
 607 #elif defined (USE_MACOSX_PACKAGING)
 608         (void)home_dir; // Silence warning about unused variable.
 609
 610         FSRef fsref;
 611         OSErr const error_code =
 612                 FSFindFolder(kUserDomain, kApplicationSupportFolderType,
 613                              kDontCreateFolder, &fsref);
 614         if (error_code != 0)
 615                 return string();
 616
 617         char store[PATH_MAX + 1];
 618         OSStatus const status_code =
 619                 FSRefMakePath(&fsref,
 620                               reinterpret_cast<UInt8*>(store), PATH_MAX);
 621         if (status_code != 0)
 622                 return string();
 623
 624         return addPath(reinterpret_cast<char const *>(store), PACKAGE);
 625
 626 #else // USE_POSIX_PACKAGING
 627         return addPath(home_dir, string(".") + PACKAGE);
 628 #endif
 629 }
 630
 631
 632 // Check that directory @c dir contains @c file.
 633 // Else emit a warning about an invalid @c command_line_switch.
 634 bool check_command_line_dir(string const & dir,
 635                             string const & file,
 636                             string const & command_line_switch)
 637 {
 638         FileName const abs_path = fileSearch(dir, file);
 639         if (abs_path.empty()) {
 640                 // FIXME UNICODE
 641                 throw ExceptionMessage(WarningException, _("File not found"), bformat(
 642                         _("Invalid %1$s switch.\nDirectory %2$s does not contain %3$s."),
 643                         lyx::from_utf8(command_line_switch), lyx::from_utf8(dir),
 644                         lyx::from_utf8(file)));
 645         }
 646
 647         return !abs_path.empty();
 648 }
 649
 650
 651 // The environment variable @c env_var expands to a (single) file path.
 652 string const extract_env_var_dir(string const & env_var)
 653 {
 654         string const dir = os::internal_path(getEnv(env_var));
 655         return dir.empty() ? dir : makeAbsPath(dir).absFilename();
 656 }
 657
 658
 659 // Check that directory @c dir contains @c file.
 660 // Else emit a warning about an invalid @c env_var.
 661 bool check_env_var_dir(string const & dir,
 662                        string const & file,
 663                        string const & env_var)
 664 {
 665         FileName const abs_path = fileSearch(dir, file);
 666         if (abs_path.empty()) {
 667                 // FIXME UNICODE
 668                 throw ExceptionMessage(WarningException, _("File not found"), bformat(
 669                         _("Invalid %1$s environment variable.\n"
 670                                 "Directory %2$s does not contain %3$s."),
 671                         lyx::from_utf8(env_var), lyx::from_utf8(dir),
 672                         lyx::from_utf8(file)));
 673         }
 674
 675         return !abs_path.empty();
 676 }
 677
 678
 679 // Check that directory @c dir is indeed a directory.
 680 // Else emit a warning about an invalid @c env_var.
 681 bool check_env_var_dir(string const & dir,
 682                        string const & env_var)
 683 {
 684         string const encoded(FileName(dir).toFilesystemEncoding());
 685         bool const success = (fs::exists(encoded) && fs::is_directory(encoded));
 686
 687         if (!success) {
 688                 // Put this string on a single line so that the gettext
 689                 // search mechanism in po/Makefile.in.in will register
 690                 // package.C.in as a file containing strings that need
 691                 // translation.
 692                 // FIXME UNICODE
 693                 docstring const fmt =
 694                         _("Invalid %1$s environment variable.\n%2$s is not a directory.");
 695
 696                 throw ExceptionMessage(WarningException, _("Directory not found"), bformat(
 697                         fmt, lyx::from_utf8(env_var), lyx::from_utf8(dir)));
 698         }
 699
 700         return success;
 701 }
 702
 703
 704 // The locale directory relative to the LyX system directory.
 705 string const relative_locale_dir()
 706 {
 707 #if defined (USE_WINDOWS_PACKAGING) || defined (USE_MACOSX_PACKAGING)
 708         return "locale/";
 709 #else
 710         return "../locale/";
 711 #endif
 712 }
 713
 714
 715 // The system lyxdir is relative to the directory containing the LyX binary.
 716 string const relative_system_support_dir()
 717 {
 718         string result;
 719
 720 #if defined (USE_WINDOWS_PACKAGING) || defined (USE_MACOSX_PACKAGING)
 721         result = "../Resources/";
 722 #else // Posix-like.
 723         result = addPath("../share/", PACKAGE);
 724 #endif
 725
 726         return result;
 727 }
 728
 729 } // namespace anon
 730
 731 } // namespace support
 732 } // namespace lyx