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<!--
changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
Edit the package's CHANGELOG.json file only.
-->

CHANGELOG

## v2.1.7 - _December 10, 2018_

    * Dependencies updated

## v2.1.6 - _November 28, 2018_

    * Dependencies updated

## v2.1.5 - _November 21, 2018_

    * Dependencies updated

## v2.1.4 - _November 14, 2018_

    * Dependencies updated

## v2.1.3 - _November 13, 2018_

    * Dependencies updated

## v2.1.2 - _November 12, 2018_

    * Dependencies updated

## v2.1.1 - _November 9, 2018_

    * Dependencies updated

## v2.1.0 - _October 18, 2018_

    * Add `MetamaskSubprovider` to handle inconsistent JSON RPC behaviour (#1102)
    * Add support for `eth_signTypedData` in wallets Mnemonic, Private and EthLightWallet (#1102)
    * Make web3-provider-engine types a 'dependency' so it's available to users of the library (#1105)

## v2.0.7 - _October 4, 2018_

    * Dependencies updated

## v2.0.6 - _September 28, 2018_

    * Dependencies updated

## v2.0.5 - _September 25, 2018_

    * Dependencies updated

## v2.0.4 - _September 25, 2018_

    * Dependencies updated

## v2.0.3 - _September 21, 2018_

    * Dependencies updated

## v2.0.2 - _September 5, 2018_

    * Dependencies updated

## v2.0.1 - _August 27, 2018_

    * Dependencies updated

## v2.0.0 - _August 24, 2018_

    * Export types: `PartialTxParams`, `JSONRPCRequestPayloadWithMethod`, `ECSignatureString`, `AccountFetchingConfigs`, `LedgerEthereumClientFactoryAsync`, `OnNextCompleted`, `MnemonicWalletSubproviderConfigs`, LedgerGetAddressResult, `JSONRPCRequestPayload`, `Provider`, `JSONRPCResponsePayload` and `JSONRPCErrorCallback` (#924)

## v1.0.5 - _August 14, 2018_

    * Dependencies updated

## v1.0.4 - _July 26, 2018_

    * Dependencies updated

## v1.0.3 - _July 26, 2018_

    * Dependencies updated

## v1.0.2 - _July 26, 2018_

    * Dependencies updated

## v1.0.1 - _July 23, 2018_

    * Dependencies updated

## v1.0.0 - _July 19, 2018_

    * Add `RpcSubprovider` with timeout (#874)
    * Add `EthLightwalletSubprovider` (#775)

## v0.10.6 - _July 18, 2018_

    * Dependencies updated

## v0.10.4 - _June 19, 2018_

    * Dependencies updated

## v0.10.3 - _May 22, 2018_

    * Define engine type as Provider in setEngine (#675)

## v0.10.2 - _May 22, 2018_

    * Dependencies updated

## v0.10.1 - _May 4, 2018_

    * Dependencies updated

## v0.10.0 - _May 4, 2018_

    * Upgrade web3-provider-engine to 14.0.4 (#555)
    * Relax `to` validation in base wallet subprovider for transactions that deploy contracts (#555)

## v0.9.0 - _April 11, 2018_

    * Refactor RedundantRPCSubprovider into RedundantSubprovider where it now accepts an array of subproviders rather then an array of RPC endpoints (#500)
    * Add PrivateKeySubprovider and refactor shared functionality into a base wallet subprovider (#506)
    * Add MnemonicWalletsubprovider, deprecating our truffle-hdwallet-provider fork (#507)
    * Support multiple addresses in ledger and mnemonic wallets (#507)
    * Refactors LedgerSubprovider such that explicitly setting the `pathIndex` is no longer required. Simply set the request `from` address as desired (#507)
    * Renamed derivationPath to baseDerivationPath. (#507)

## v0.8.4 - _April 2, 2018_

    * Dependencies updated

## v0.8.3 - _April 2, 2018_

    * Introduce `JSONRPCRequestPayloadWithMethod` type (#465)
    * Export `ErrorCallback` type. (#465)

## v0.8.0 - _March 17, 2018_

    * Export `GanacheSubprovider` and `Subprovider` (#426)
    * Make all subproviders to derive from `Subprovider` (#426)
    * Add types for `NextCallback`, `OnNextCompleted` (#426)
    * Ignore `ganache-core` dependency when using package in a browser environment.

## v0.7.0 - _March 7, 2018_

    * Updated legerco packages. Removed node-hid package as a dependency and make it an optional dependency. It is still used in integration tests but is causing problems for users on Linux distros. (#437)

## v0.6.0 - _March 3, 2018_

    * Move web3 types from being a devDep to a dep since one cannot use this package without it (#429)
    * Add `numberOfAccounts` param to `LedgerSubprovider` method `getAccountsAsync` (#432)

## v0.5.0 - _February 15, 2018_

    * Add EmptyWalletSubprovider and FakeGasEstimateSubprovider (#392)

## v0.4.1 - _February 8, 2018_

    * Fix publishing issue where .npmignore was not properly excluding undesired content (#389)

## v0.4.0 - _February 6, 2018_

    * Added NonceTrackerSubprovider (#355)
    * InjectedWeb3Subprovider accepts a Provider in the constructor, previously it was a Web3 object (#363)

## v0.3.6 - _January 27, 2018_

    * Return a transaction hash from `_sendTransactionAsync` (#303)

## v0.3.0 - _December 27, 2017_

    * Allow LedgerSubprovider to handle `eth_sign` in addition to `personal_sign` RPC requests

## v0.2.0 - _December 19, 2017_

    * Improve the performance of address fetching (#271)
href='#n534'>534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500
/* eggdesktopfile.c - Freedesktop.Org Desktop Files
 * Copyright (C) 2007 Novell, Inc.
 *
 * Based on gnome-desktop-item.c
 * Copyright (C) 1999, 2000 Red Hat Inc.
 * Copyright (C) 2001 George Lebl
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.LIB. If not,
 * write to the Free Software Foundation, Inc., 59 Temple Place -
 * Suite 330, Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "eggdesktopfile.h"

#include <string.h>
#include <unistd.h>

#include <glib/gi18n.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>

struct EggDesktopFile {
  GKeyFile           *key_file;
  gchar               *source;

  gchar               *name, *icon;
  EggDesktopFileType  type;
  gchar                document_code;
};

/**
 * egg_desktop_file_new:
 * @desktop_file_path: path to a Freedesktop-style Desktop file
 * @error: error pointer
 *
 * Creates a new #EggDesktopFile for @desktop_file.
 *
 * Return value: the new #EggDesktopFile, or %NULL on error.
 **/
EggDesktopFile *
egg_desktop_file_new (const gchar *desktop_file_path, GError **error)
{
  GKeyFile *key_file;

  key_file = g_key_file_new ();
  if (!g_key_file_load_from_file (key_file, desktop_file_path, 0, error))
    {
      g_key_file_free (key_file);
      return NULL;
    }

  return egg_desktop_file_new_from_key_file (key_file, desktop_file_path,
                         error);
}

/**
 * egg_desktop_file_new_from_data_dirs:
 * @desktop_file_path: relative path to a Freedesktop-style Desktop file
 * @error: error pointer
 *
 * Looks for @desktop_file_path in the paths returned from
 * g_get_user_data_dir() and g_get_system_data_dirs(), and creates
 * a new #EggDesktopFile from it.
 *
 * Return value: the new #EggDesktopFile, or %NULL on error.
 **/
EggDesktopFile *
egg_desktop_file_new_from_data_dirs (const gchar  *desktop_file_path,
                     GError     **error)
{
  EggDesktopFile *desktop_file;
  GKeyFile *key_file;
  gchar *full_path;

  key_file = g_key_file_new ();
  if (!g_key_file_load_from_data_dirs (key_file, desktop_file_path,
                       &full_path, 0, error))
    {
      g_key_file_free (key_file);
      return NULL;
    }

  desktop_file = egg_desktop_file_new_from_key_file (key_file,
                             full_path,
                             error);
  g_free (full_path);
  return desktop_file;
}

/**
 * egg_desktop_file_new_from_dirs:
 * @desktop_file_path: relative path to a Freedesktop-style Desktop file
 * @search_dirs: NULL-terminated array of directories to search
 * @error: error pointer
 *
 * Looks for @desktop_file_path in the paths returned from
 * g_get_user_data_dir() and g_get_system_data_dirs(), and creates
 * a new #EggDesktopFile from it.
 *
 * Return value: the new #EggDesktopFile, or %NULL on error.
 **/
EggDesktopFile *
egg_desktop_file_new_from_dirs (const gchar  *desktop_file_path,
                const gchar **search_dirs,
                GError     **error)
{
  EggDesktopFile *desktop_file;
  GKeyFile *key_file;
  gchar *full_path;

  key_file = g_key_file_new ();
  if (!g_key_file_load_from_dirs (key_file, desktop_file_path, search_dirs,
                  &full_path, 0, error))
    {
      g_key_file_free (key_file);
      return NULL;
    }

  desktop_file = egg_desktop_file_new_from_key_file (key_file,
                             full_path,
                             error);
  g_free (full_path);
  return desktop_file;
}

/**
 * egg_desktop_file_new_from_key_file:
 * @key_file: a #GKeyFile representing a desktop file
 * @source: the path or URI that @key_file was loaded from, or %NULL
 * @error: error pointer
 *
 * Creates a new #EggDesktopFile for @key_file. Assumes ownership of
 * @key_file (on success or failure); you should consider @key_file to
 * be freed after calling this function.
 *
 * Return value: the new #EggDesktopFile, or %NULL on error.
 **/
EggDesktopFile *
egg_desktop_file_new_from_key_file (GKeyFile    *key_file,
                    const gchar  *source,
                    GError     **error)
{
  EggDesktopFile *desktop_file;
  gchar *version, *type;

  if (!g_key_file_has_group (key_file, EGG_DESKTOP_FILE_GROUP))
    {
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
           EGG_DESKTOP_FILE_ERROR_INVALID,
           _("File is not a valid .desktop file"));
      g_key_file_free (key_file);
      return NULL;
    }

  version = g_key_file_get_value (key_file, EGG_DESKTOP_FILE_GROUP,
                  EGG_DESKTOP_FILE_KEY_VERSION,
                  NULL);
  if (version)
    {
      gdouble version_num;
      gchar *end;

      version_num = g_ascii_strtod (version, &end);
      if (*end)
    {
      g_warning ("Invalid Version string '%s' in %s",
             version, source ? source : "(unknown)");
    }
      else if (version_num > 1.0)
    {
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
               EGG_DESKTOP_FILE_ERROR_INVALID,
               _("Unrecognized desktop file Version '%s'"), version);
      g_free (version);
      g_key_file_free (key_file);
      return NULL;
    }
      g_free (version);
    }

  desktop_file = g_new0 (EggDesktopFile, 1);
  desktop_file->key_file = key_file;

  if (g_path_is_absolute (source))
    desktop_file->source = g_filename_to_uri (source, NULL, NULL);
  else
    desktop_file->source = g_strdup (source);

  desktop_file->name = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
                          EGG_DESKTOP_FILE_KEY_NAME, error);
  if (!desktop_file->name)
    {
      egg_desktop_file_free (desktop_file);
      return NULL;
    }

  type = g_key_file_get_string (key_file, EGG_DESKTOP_FILE_GROUP,
                EGG_DESKTOP_FILE_KEY_TYPE, error);
  if (!type)
    {
      egg_desktop_file_free (desktop_file);
      return NULL;
    }

  if (!strcmp (type, "Application"))
    {
      gchar *exec, *p;

      desktop_file->type = EGG_DESKTOP_FILE_TYPE_APPLICATION;

      exec = g_key_file_get_string (key_file,
                    EGG_DESKTOP_FILE_GROUP,
                    EGG_DESKTOP_FILE_KEY_EXEC,
                    error);
      if (!exec)
    {
      egg_desktop_file_free (desktop_file);
      g_free (type);
      return NULL;
    }

      /* See if it takes paths or URIs or neither */
      for (p = exec; *p; p++)
    {
      if (*p == '%')
        {
          if (p[1] == '\0' || strchr ("FfUu", p[1]))
        {
          desktop_file->document_code = p[1];
          break;
        }
          p++;
        }
    }

      g_free (exec);
    }
  else if (!strcmp (type, "Link"))
    {
      gchar *url;

      desktop_file->type = EGG_DESKTOP_FILE_TYPE_LINK;

      url = g_key_file_get_string (key_file,
                   EGG_DESKTOP_FILE_GROUP,
                   EGG_DESKTOP_FILE_KEY_URL,
                   error);
      if (!url)
    {
      egg_desktop_file_free (desktop_file);
      g_free (type);
      return NULL;
    }
      g_free (url);
    }
  else if (!strcmp (type, "Directory"))
    desktop_file->type = EGG_DESKTOP_FILE_TYPE_DIRECTORY;
  else
    desktop_file->type = EGG_DESKTOP_FILE_TYPE_UNRECOGNIZED;

  g_free (type);

  /* Check the Icon key */
  desktop_file->icon = g_key_file_get_string (key_file,
                          EGG_DESKTOP_FILE_GROUP,
                          EGG_DESKTOP_FILE_KEY_ICON,
                          NULL);
  if (desktop_file->icon && !g_path_is_absolute (desktop_file->icon))
    {
      gchar *ext;

      /* Lots of .desktop files still get this wrong */
      ext = strrchr (desktop_file->icon, '.');
      if (ext && (!strcmp (ext, ".png") ||
          !strcmp (ext, ".xpm") ||
          !strcmp (ext, ".svg")))
    {
      g_warning ("Desktop file '%s' has malformed Icon key '%s'"
             "(should not include extension)",
             source ? source : "(unknown)",
             desktop_file->icon);
      *ext = '\0';
    }
    }

  return desktop_file;
}

/**
 * egg_desktop_file_free:
 * @desktop_file: an #EggDesktopFile
 *
 * Frees @desktop_file.
 **/
void
egg_desktop_file_free (EggDesktopFile *desktop_file)
{
  g_key_file_free (desktop_file->key_file);
  g_free (desktop_file->source);
  g_free (desktop_file->name);
  g_free (desktop_file->icon);
  g_free (desktop_file);
}

/**
 * egg_desktop_file_get_source:
 * @desktop_file: an #EggDesktopFile
 *
 * Gets the URI that @desktop_file was loaded from.
 *
 * Return value: @desktop_file's source URI
 **/
const gchar *
egg_desktop_file_get_source (EggDesktopFile *desktop_file)
{
  return desktop_file->source;
}

/**
 * egg_desktop_file_get_desktop_file_type:
 * @desktop_file: an #EggDesktopFile
 *
 * Gets the desktop file type of @desktop_file.
 *
 * Return value: @desktop_file's type
 **/
EggDesktopFileType
egg_desktop_file_get_desktop_file_type (EggDesktopFile *desktop_file)
{
  return desktop_file->type;
}

/**
 * egg_desktop_file_get_name:
 * @desktop_file: an #EggDesktopFile
 *
 * Gets the (localized) value of @desktop_file's "Name" key.
 *
 * Return value: the application/link name
 **/
const gchar *
egg_desktop_file_get_name (EggDesktopFile *desktop_file)
{
  return desktop_file->name;
}

/**
 * egg_desktop_file_get_icon:
 * @desktop_file: an #EggDesktopFile
 *
 * Gets the value of @desktop_file's "Icon" key.
 *
 * If the icon string is a full path (that is, if g_path_is_absolute()
 * returns %TRUE when called on it), it points to a file containing an
 * unthemed icon. If the icon string is not a full path, it is the
 * name of a themed icon, which can be looked up with %GtkIconTheme,
 * or passed directly to a theme-aware widget like %GtkImage or
 * %GtkCellRendererPixbuf.
 *
 * Return value: the icon path or name
 **/
const gchar *
egg_desktop_file_get_icon (EggDesktopFile *desktop_file)
{
  return desktop_file->icon;
}

gboolean
egg_desktop_file_has_key (EggDesktopFile  *desktop_file,
              const gchar      *key,
              GError         **error)
{
  return g_key_file_has_key (desktop_file->key_file,
                 EGG_DESKTOP_FILE_GROUP, key,
                 error);
}

gchar *
egg_desktop_file_get_string (EggDesktopFile  *desktop_file,
                 const gchar      *key,
                 GError         **error)
{
  return g_key_file_get_string (desktop_file->key_file,
                EGG_DESKTOP_FILE_GROUP, key,
                error);
}

gchar *
egg_desktop_file_get_locale_string (EggDesktopFile  *desktop_file,
                    const gchar      *key,
                    const gchar      *locale,
                    GError         **error)
{
  return g_key_file_get_locale_string (desktop_file->key_file,
                       EGG_DESKTOP_FILE_GROUP, key, locale,
                       error);
}

gboolean
egg_desktop_file_get_boolean (EggDesktopFile  *desktop_file,
                  const gchar      *key,
                  GError         **error)
{
  return g_key_file_get_boolean (desktop_file->key_file,
                 EGG_DESKTOP_FILE_GROUP, key,
                 error);
}

gdouble
egg_desktop_file_get_numeric (EggDesktopFile  *desktop_file,
                  const gchar      *key,
                  GError         **error)
{
  return g_key_file_get_double (desktop_file->key_file,
                EGG_DESKTOP_FILE_GROUP, key,
                error);
}

gchar **
egg_desktop_file_get_string_list (EggDesktopFile  *desktop_file,
                  const gchar      *key,
                  gsize           *length,
                  GError         **error)
{
  return g_key_file_get_string_list (desktop_file->key_file,
                     EGG_DESKTOP_FILE_GROUP, key, length,
                     error);
}

gchar **
egg_desktop_file_get_locale_string_list (EggDesktopFile  *desktop_file,
                     const gchar      *key,
                     const gchar      *locale,
                     gsize           *length,
                     GError         **error)
{
  return g_key_file_get_locale_string_list (desktop_file->key_file,
                        EGG_DESKTOP_FILE_GROUP, key,
                        locale, length,
                        error);
}

/**
 * egg_desktop_file_can_launch:
 * @desktop_file: an #EggDesktopFile
 * @desktop_environment: the name of the running desktop environment,
 * or %NULL
 *
 * Tests if @desktop_file can/should be launched in the current
 * environment. If @desktop_environment is non-%NULL, @desktop_file's
 * "OnlyShowIn" and "NotShowIn" keys are checked to make sure that
 * this desktop_file is appropriate for the named environment.
 *
 * Furthermore, if @desktop_file has type
 * %EGG_DESKTOP_FILE_TYPE_APPLICATION, its "TryExec" key (if any) is
 * also checked, to make sure the binary it points to exists.
 *
 * egg_desktop_file_can_launch() does NOT check the value of the
 * "Hidden" key.
 *
 * Return value: %TRUE if @desktop_file can be launched
 **/
gboolean
egg_desktop_file_can_launch (EggDesktopFile *desktop_file,
                 const gchar     *desktop_environment)
{
  gchar *try_exec, *found_program;
  gchar **only_show_in, **not_show_in;
  gboolean found;
  gint i;

  if (desktop_file->type != EGG_DESKTOP_FILE_TYPE_APPLICATION &&
      desktop_file->type != EGG_DESKTOP_FILE_TYPE_LINK)
    return FALSE;

  if (desktop_environment)
    {
      only_show_in = g_key_file_get_string_list (desktop_file->key_file,
                         EGG_DESKTOP_FILE_GROUP,
                         EGG_DESKTOP_FILE_KEY_ONLY_SHOW_IN,
                         NULL, NULL);
      if (only_show_in)
    {
      for (i = 0, found = FALSE; only_show_in[i] && !found; i++)
        {
          if (!strcmp (only_show_in[i], desktop_environment))
        found = TRUE;
        }

      g_strfreev (only_show_in);

      if (!found)
        return FALSE;
    }

      not_show_in = g_key_file_get_string_list (desktop_file->key_file,
                        EGG_DESKTOP_FILE_GROUP,
                        EGG_DESKTOP_FILE_KEY_NOT_SHOW_IN,
                        NULL, NULL);
      if (not_show_in)
    {
      for (i = 0, found = FALSE; not_show_in[i] && !found; i++)
        {
          if (!strcmp (not_show_in[i], desktop_environment))
        found = TRUE;
        }

      g_strfreev (not_show_in);

      if (found)
        return FALSE;
    }
    }

  if (desktop_file->type == EGG_DESKTOP_FILE_TYPE_APPLICATION)
    {
      try_exec = g_key_file_get_string (desktop_file->key_file,
                    EGG_DESKTOP_FILE_GROUP,
                    EGG_DESKTOP_FILE_KEY_TRY_EXEC,
                    NULL);
      if (try_exec)
    {
      found_program = g_find_program_in_path (try_exec);
      g_free (try_exec);

      if (!found_program)
        return FALSE;
      g_free (found_program);
    }
    }

  return TRUE;
}

/**
 * egg_desktop_file_accepts_documents:
 * @desktop_file: an #EggDesktopFile
 *
 * Tests if @desktop_file represents an application that can accept
 * documents on the command line.
 *
 * Return value: %TRUE or %FALSE
 **/
gboolean
egg_desktop_file_accepts_documents (EggDesktopFile *desktop_file)
{
  return desktop_file->document_code != 0;
}

/**
 * egg_desktop_file_accepts_multiple:
 * @desktop_file: an #EggDesktopFile
 *
 * Tests if @desktop_file can accept multiple documents at once.
 *
 * If this returns %FALSE, you can still pass multiple documents to
 * egg_desktop_file_launch(), but that will result in multiple copies
 * of the application being launched. See egg_desktop_file_launch()
 * for more details.
 *
 * Return value: %TRUE or %FALSE
 **/
gboolean
egg_desktop_file_accepts_multiple (EggDesktopFile *desktop_file)
{
  return (desktop_file->document_code == 'F' ||
      desktop_file->document_code == 'U');
}

/**
 * egg_desktop_file_accepts_uris:
 * @desktop_file: an #EggDesktopFile
 *
 * Tests if @desktop_file can accept (non-"file:") URIs as documents to
 * open.
 *
 * Return value: %TRUE or %FALSE
 **/
gboolean
egg_desktop_file_accepts_uris (EggDesktopFile *desktop_file)
{
  return (desktop_file->document_code == 'U' ||
      desktop_file->document_code == 'u');
}

static void
append_quoted_word (GString    *str,
            const gchar *s,
            gboolean    in_single_quotes,
            gboolean    in_double_quotes)
{
  const gchar *p;

  if (!in_single_quotes && !in_double_quotes)
    g_string_append_c (str, '\'');
  else if (!in_single_quotes && in_double_quotes)
    g_string_append (str, "\"'");

  if (!strchr (s, '\''))
    g_string_append (str, s);
  else
    {
      for (p = s; *p != '\0'; p++)
    {
      if (*p == '\'')
        g_string_append (str, "'\\''");
      else
        g_string_append_c (str, *p);
    }
    }

  if (!in_single_quotes && !in_double_quotes)
    g_string_append_c (str, '\'');
  else if (!in_single_quotes && in_double_quotes)
    g_string_append (str, "'\"");
}

static void
do_percent_subst (EggDesktopFile *desktop_file,
          gchar            code,
          GString        *str,
          GSList        **documents,
          gboolean        in_single_quotes,
          gboolean        in_double_quotes)
{
  GSList *d;
  gchar *doc;

  switch (code)
    {
    case '%':
      g_string_append_c (str, '%');
      break;

    case 'F':
    case 'U':
      for (d = *documents; d; d = d->next)
    {
      doc = d->data;
      g_string_append (str, " ");
      append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
    }
      *documents = NULL;
      break;

    case 'f':
    case 'u':
      if (*documents)
    {
      doc = (*documents)->data;
      g_string_append (str, " ");
      append_quoted_word (str, doc, in_single_quotes, in_double_quotes);
      *documents = (*documents)->next;
    }
      break;

    case 'i':
      if (desktop_file->icon)
    {
      g_string_append (str, "--icon ");
      append_quoted_word (str, desktop_file->icon,
                  in_single_quotes, in_double_quotes);
    }
      break;

    case 'c':
      if (desktop_file->name)
    {
      append_quoted_word (str, desktop_file->name,
                  in_single_quotes, in_double_quotes);
    }
      break;

    case 'k':
      if (desktop_file->source)
    {
      append_quoted_word (str, desktop_file->source,
                  in_single_quotes, in_double_quotes);
    }
      break;

    case 'D':
    case 'N':
    case 'd':
    case 'n':
    case 'v':
    case 'm':
      /* Deprecated; skip */
      break;

    default:
      g_warning ("Unrecognized %%-code '%%%c' in Exec", code);
      break;
    }
}

static gchar *
parse_exec (EggDesktopFile  *desktop_file,
        GSList         **documents,
        GError         **error)
{
  gchar *exec, *p, *command;
  gboolean escape, single_quot, double_quot;
  GString *gs;

  exec = g_key_file_get_string (desktop_file->key_file,
                EGG_DESKTOP_FILE_GROUP,
                EGG_DESKTOP_FILE_KEY_EXEC,
                error);
  if (!exec)
    return NULL;

  /* Build the command */
  gs = g_string_new (NULL);
  escape = single_quot = double_quot = FALSE;

  for (p = exec; *p != '\0'; p++)
    {
      if (escape)
    {
      escape = FALSE;
      g_string_append_c (gs, *p);
    }
      else if (*p == '\\')
    {
      if (!single_quot)
        escape = TRUE;
      g_string_append_c (gs, *p);
    }
      else if (*p == '\'')
    {
      g_string_append_c (gs, *p);
      if (!single_quot && !double_quot)
        single_quot = TRUE;
      else if (single_quot)
        single_quot = FALSE;
    }
      else if (*p == '"')
    {
      g_string_append_c (gs, *p);
      if (!single_quot && !double_quot)
        double_quot = TRUE;
      else if (double_quot)
        double_quot = FALSE;
    }
      else if (*p == '%' && p[1])
    {
      do_percent_subst (desktop_file, p[1], gs, documents,
                single_quot, double_quot);
      p++;
    }
      else
    g_string_append_c (gs, *p);
    }

  g_free (exec);
  command = g_string_free (gs, FALSE);

  /* Prepend "xdg-terminal " if needed (FIXME: use gvfs) */
  if (g_key_file_has_key (desktop_file->key_file,
              EGG_DESKTOP_FILE_GROUP,
              EGG_DESKTOP_FILE_KEY_TERMINAL,
              NULL))
    {
      GError *terminal_error = NULL;
      gboolean use_terminal =
    g_key_file_get_boolean (desktop_file->key_file,
                EGG_DESKTOP_FILE_GROUP,
                EGG_DESKTOP_FILE_KEY_TERMINAL,
                &terminal_error);
      if (terminal_error)
    {
      g_free (command);
      g_propagate_error (error, terminal_error);
      return NULL;
    }

      if (use_terminal)
    {
      gs = g_string_new ("xdg-terminal ");
      append_quoted_word (gs, command, FALSE, FALSE);
      g_free (command);
      command = g_string_free (gs, FALSE);
    }
    }

  return command;
}

static GSList *
translate_document_list (EggDesktopFile *desktop_file, GSList *documents)
{
  gboolean accepts_uris = egg_desktop_file_accepts_uris (desktop_file);
  GSList *ret, *d;

  for (d = documents, ret = NULL; d; d = d->next)
    {
      const gchar *document = d->data;
      gboolean is_uri = !g_path_is_absolute (document);
      gchar *translated;

      if (accepts_uris)
    {
      if (is_uri)
        translated = g_strdup (document);
      else
        translated = g_filename_to_uri (document, NULL, NULL);
    }
      else
    {
      if (is_uri)
        translated = g_filename_from_uri (document, NULL, NULL);
      else
        translated = g_strdup (document);
    }

      if (translated)
    ret = g_slist_prepend (ret, translated);
    }

  return g_slist_reverse (ret);
}

static void
free_document_list (GSList *documents)
{
  GSList *d;

  for (d = documents; d; d = d->next)
    g_free (d->data);
  g_slist_free (documents);
}

/**
 * egg_desktop_file_parse_exec:
 * @desktop_file: a #EggDesktopFile
 * @documents: a list of document paths or URIs
 * @error: error pointer
 *
 * Parses @desktop_file's Exec key, inserting @documents into it, and
 * returns the result.
 *
 * If @documents contains non-file: URIs and @desktop_file does not
 * accept URIs, those URIs will be ignored. Likewise, if @documents
 * contains more elements than @desktop_file accepts, the extra
 * documents will be ignored.
 *
 * Return value: the parsed Exec string
 **/
gchar *
egg_desktop_file_parse_exec (EggDesktopFile  *desktop_file,
                 GSList          *documents,
                 GError         **error)
{
  GSList *translated, *docs;
  gchar *command;

  docs = translated = translate_document_list (desktop_file, documents);
  command = parse_exec (desktop_file, &docs, error);
  free_document_list (translated);

  return command;
}

static gboolean
parse_link (EggDesktopFile  *desktop_file,
        EggDesktopFile **app_desktop_file,
        GSList         **documents,
        GError         **error)
{
  gchar *url;
  GKeyFile *key_file;

  url = g_key_file_get_string (desktop_file->key_file,
                   EGG_DESKTOP_FILE_GROUP,
                   EGG_DESKTOP_FILE_KEY_URL,
                   error);
  if (!url)
    return FALSE;
  *documents = g_slist_prepend (NULL, url);

  /* FIXME: use gvfs */
  key_file = g_key_file_new ();
  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
             EGG_DESKTOP_FILE_KEY_NAME,
             "xdg-open");
  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
             EGG_DESKTOP_FILE_KEY_TYPE,
             "Application");
  g_key_file_set_string (key_file, EGG_DESKTOP_FILE_GROUP,
             EGG_DESKTOP_FILE_KEY_EXEC,
             "xdg-open %u");
  *app_desktop_file = egg_desktop_file_new_from_key_file (key_file, NULL, NULL);
  return TRUE;
}

static gchar *
start_startup_notification (GdkDisplay     *display,
                EggDesktopFile *desktop_file,
                const gchar     *argv0,
                gint             screen,
                gint             workspace,
                guint32         launch_time)
{
  static gint sequence = 0;
  gchar *startup_id;
  gchar *description, *wmclass;
  gchar *screen_str, *workspace_str;

  if (g_key_file_has_key (desktop_file->key_file,
              EGG_DESKTOP_FILE_GROUP,
              EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
              NULL))
    {
      if (!g_key_file_get_boolean (desktop_file->key_file,
                   EGG_DESKTOP_FILE_GROUP,
                   EGG_DESKTOP_FILE_KEY_STARTUP_NOTIFY,
                   NULL))
    return NULL;
      wmclass = NULL;
    }
  else
    {
      wmclass = g_key_file_get_string (desktop_file->key_file,
                       EGG_DESKTOP_FILE_GROUP,
                       EGG_DESKTOP_FILE_KEY_STARTUP_WM_CLASS,
                       NULL);
      if (!wmclass)
    return NULL;
    }

  if (launch_time == (guint32)-1)
    launch_time = gdk_x11_display_get_user_time (display);
  startup_id = g_strdup_printf ("%s-%lu-%s-%s-%d_TIME%lu",
                g_get_prgname (),
                (unsigned long)getpid (),
                g_get_host_name (),
                argv0,
                sequence++,
                (unsigned long)launch_time);

  description = g_strdup_printf (_("Starting %s"), desktop_file->name);
  screen_str = g_strdup_printf ("%d", screen);
  workspace_str = workspace == -1 ? NULL : g_strdup_printf ("%d", workspace);

  gdk_x11_display_broadcast_startup_message (display, "new",
                         "ID", startup_id,
                         "NAME", desktop_file->name,
                         "SCREEN", screen_str,
                         "BIN", argv0,
                         "ICON", desktop_file->icon,
                         "DESKTOP", workspace_str,
                         "DESCRIPTION", description,
                         "WMCLASS", wmclass,
                         NULL);

  g_free (description);
  g_free (wmclass);
  g_free (screen_str);
  g_free (workspace_str);

  return startup_id;
}

static void
end_startup_notification (GdkDisplay *display,
              const gchar *startup_id)
{
  gdk_x11_display_broadcast_startup_message (display, "remove",
                         "ID", startup_id,
                         NULL);
}

#define EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH (30 /* seconds */)

typedef struct {
  GdkDisplay *display;
  gchar *startup_id;
} StartupNotificationData;

static gboolean
startup_notification_timeout (gpointer data)
{
  StartupNotificationData *sn_data = data;

  end_startup_notification (sn_data->display, sn_data->startup_id);
  g_object_unref (sn_data->display);
  g_free (sn_data->startup_id);
  g_free (sn_data);

  return FALSE;
}

static void
set_startup_notification_timeout (GdkDisplay *display,
                  const gchar *startup_id)
{
  StartupNotificationData *sn_data;

  sn_data = g_new (StartupNotificationData, 1);
  sn_data->display = g_object_ref (display);
  sn_data->startup_id = g_strdup (startup_id);

  g_timeout_add_seconds (EGG_DESKTOP_FILE_SN_TIMEOUT_LENGTH,
             startup_notification_timeout, sn_data);
}

static GPtrArray *
array_putenv (GPtrArray *env, gchar *variable)
{
  guint i, keylen;

  if (!env)
    {
      gchar **envp;

      env = g_ptr_array_new ();

      envp = g_listenv ();
      for (i = 0; envp[i]; i++)
    {
      const gchar *value;

      value = g_getenv (envp[i]);
          g_ptr_array_add (env, g_strdup_printf ("%s=%s", envp[i],
                                                 value ? value : ""));
    }
      g_strfreev (envp);
    }

  keylen = strcspn (variable, "=");

  /* Remove old value of key */
  for (i = 0; i < env->len; i++)
    {
      gchar *envvar = env->pdata[i];

      if (!strncmp (envvar, variable, keylen) && envvar[keylen] == '=')
    {
      g_free (envvar);
      g_ptr_array_remove_index_fast (env, i);
      break;
    }
    }

  /* Add new value */
  g_ptr_array_add (env, g_strdup (variable));

  return env;
}

static gboolean
egg_desktop_file_launchv (EggDesktopFile *desktop_file,
              GSList *documents, va_list args,
              GError **error)
{
  EggDesktopFileLaunchOption option;
  GSList *translated_documents = NULL, *docs = NULL;
  gchar *command, **argv;
  gint argc, i, screen_num;
  gboolean success, current_success;
  GdkDisplay *display;
  gchar *startup_id;

  GPtrArray   *env = NULL;
  gchar       **variables = NULL;
  GdkScreen   *screen = NULL;
  gint          workspace = -1;
  const gchar  *directory = NULL;
  guint32      launch_time = (guint32)-1;
  GSpawnFlags  flags = G_SPAWN_SEARCH_PATH;
  GSpawnChildSetupFunc setup_func = NULL;
  gpointer     setup_data = NULL;

  GPid        *ret_pid = NULL;
  gint         *ret_stdin = NULL, *ret_stdout = NULL, *ret_stderr = NULL;
  gchar       **ret_startup_id = NULL;

  if (documents && desktop_file->document_code == 0)
    {
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
           EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
           _("Application does not accept documents on command line"));
      return FALSE;
    }

  /* Read the options: technically it's incorrect for the caller to
   * NULL-terminate the list of options (rather than 0-terminating
   * it), but NULL-terminating lets us use G_GNUC_NULL_TERMINATED,
   * it's more consistent with other glib/gtk methods, and it will
   * work as long as sizeof (gint) <= sizeof (NULL), and NULL is
   * represented as 0. (Which is true everywhere we care about.)
   */
  while ((option = va_arg (args, EggDesktopFileLaunchOption)))
    {
      switch (option)
    {
    case EGG_DESKTOP_FILE_LAUNCH_CLEARENV:
      if (env)
        g_ptr_array_free (env, TRUE);
      env = g_ptr_array_new ();
      break;
    case EGG_DESKTOP_FILE_LAUNCH_PUTENV:
      variables = va_arg (args, gchar **);
      for (i = 0; variables[i]; i++)
        env = array_putenv (env, variables[i]);
      break;

    case EGG_DESKTOP_FILE_LAUNCH_SCREEN:
      screen = va_arg (args, GdkScreen *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_WORKSPACE:
      workspace = va_arg (args, gint);
      break;

    case EGG_DESKTOP_FILE_LAUNCH_DIRECTORY:
      directory = va_arg (args, const gchar *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_TIME:
      launch_time = va_arg (args, guint32);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_FLAGS:
      flags |= va_arg (args, GSpawnFlags);
      /* Make sure they didn't set any flags that don't make sense. */
      flags &= ~G_SPAWN_FILE_AND_ARGV_ZERO;
      break;
    case EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC:
      setup_func = va_arg (args, GSpawnChildSetupFunc);
      setup_data = va_arg (args, gpointer);
      break;

    case EGG_DESKTOP_FILE_LAUNCH_RETURN_PID:
      ret_pid = va_arg (args, GPid *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE:
      ret_stdin = va_arg (args, gint *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE:
      ret_stdout = va_arg (args, gint *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE:
      ret_stderr = va_arg (args, gint *);
      break;
    case EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID:
      ret_startup_id = va_arg (args, gchar **);
      break;

    default:
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
               EGG_DESKTOP_FILE_ERROR_UNRECOGNIZED_OPTION,
               _("Unrecognized launch option: %d"),
               GPOINTER_TO_INT (option));
      success = FALSE;
      goto out;
    }
    }

  if (screen)
    {
      gchar *display_name = gdk_screen_make_display_name (screen);
      gchar *display_env = g_strdup_printf ("DISPLAY=%s", display_name);
      env = array_putenv (env, display_env);
      g_free (display_name);
      g_free (display_env);

      display = gdk_screen_get_display (screen);
    }
  else
    {
      display = gdk_display_get_default ();
      screen = gdk_display_get_default_screen (display);
    }
  screen_num = gdk_screen_get_number (screen);

  translated_documents = translate_document_list (desktop_file, documents);
  docs = translated_documents;

  success = FALSE;

  do
    {
      command = parse_exec (desktop_file, &docs, error);
      if (!command)
    goto out;

      if (!g_shell_parse_argv (command, &argc, &argv, error))
    {
      g_free (command);
      goto out;
    }
      g_free (command);

      startup_id = start_startup_notification (display, desktop_file,
                           argv[0], screen_num,
                           workspace, launch_time);
      if (startup_id)
    {
      gchar *startup_id_env = g_strdup_printf ("DESKTOP_STARTUP_ID=%s",
                          startup_id);
      env = array_putenv (env, startup_id_env);
      g_free (startup_id_env);
    }

      if (env != NULL)
    g_ptr_array_add (env, NULL);

      current_success =
    g_spawn_async_with_pipes (directory,
                  argv,
                  env ? (gchar **)(env->pdata) : NULL,
                  flags,
                  setup_func, setup_data,
                  ret_pid,
                  ret_stdin, ret_stdout, ret_stderr,
                  error);
      g_strfreev (argv);

      if (startup_id)
    {
      if (current_success)
        {
          set_startup_notification_timeout (display, startup_id);

          if (ret_startup_id)
        *ret_startup_id = startup_id;
          else
        g_free (startup_id);
        }
      else
        g_free (startup_id);
    }
      else if (ret_startup_id)
    *ret_startup_id = NULL;

      if (current_success)
    {
      /* If we successfully launch any instances of the app, make
       * sure we return TRUE and don't set @error.
       */
      success = TRUE;
      error = NULL;

      /* Also, only set the output params on the first one */
      ret_pid = NULL;
      ret_stdin = ret_stdout = ret_stderr = NULL;
      ret_startup_id = NULL;
    }
    }
  while (docs && current_success);

 out:
  if (env)
    {
      g_ptr_array_foreach (env, (GFunc)g_free, NULL);
      g_ptr_array_free (env, TRUE);
    }
  free_document_list (translated_documents);

  return success;
}

/**
 * egg_desktop_file_launch:
 * @desktop_file: an #EggDesktopFile
 * @documents: a list of URIs or paths to documents to open
 * @error: error pointer
 * @...: additional options
 *
 * Launches @desktop_file with the given arguments. Additional options
 * can be specified as follows:
 *
 *   %EGG_DESKTOP_FILE_LAUNCH_CLEARENV: (no arguments)
 *       clears the environment in the child process
 *   %EGG_DESKTOP_FILE_LAUNCH_PUTENV: (gchar **variables)
 *       adds the NAME=VALUE strings in the given %NULL-terminated
 *       array to the child process's environment
 *   %EGG_DESKTOP_FILE_LAUNCH_SCREEN: (GdkScreen *screen)
 *       causes the application to be launched on the given screen
 *   %EGG_DESKTOP_FILE_LAUNCH_WORKSPACE: (gint workspace)
 *       causes the application to be launched on the given workspace
 *   %EGG_DESKTOP_FILE_LAUNCH_DIRECTORY: (gchar *dir)
 *       causes the application to be launched in the given directory
 *   %EGG_DESKTOP_FILE_LAUNCH_TIME: (guint32 launch_time)
 *       sets the "launch time" for the application. If the user
 *       interacts with another window after @launch_time but before
 *       the launched application creates its first window, the window
 *       manager may choose to not give focus to the new application.
 *       Passing 0 for @launch_time will explicitly request that the
 *       application not receive focus.
 *   %EGG_DESKTOP_FILE_LAUNCH_FLAGS (GSpawnFlags flags)
 *       Sets additional #GSpawnFlags to use. See g_spawn_async() for
 *       more details.
 *   %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC (GSpawnChildSetupFunc, gpointer)
 *       Sets the child setup callback and the data to pass to it.
 *       (See g_spawn_async() for more details.)
 *
 *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID (GPid **pid)
 *       On a successful launch, sets *@pid to the PID of the launched
 *       application.
 *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STARTUP_ID (gchar **startup_id)
 *       On a successful launch, sets *@startup_id to the Startup
 *       Notification "startup id" of the launched application.
 *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDIN_PIPE (gint *fd)
 *       On a successful launch, sets *@fd to the file descriptor of
 *       a pipe connected to the application's stdin.
 *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDOUT_PIPE (gint *fd)
 *       On a successful launch, sets *@fd to the file descriptor of
 *       a pipe connected to the application's stdout.
 *   %EGG_DESKTOP_FILE_LAUNCH_RETURN_STDERR_PIPE (gint *fd)
 *       On a successful launch, sets *@fd to the file descriptor of
 *       a pipe connected to the application's stderr.
 *
 * The options should be terminated with a single %NULL.
 *
 * If @documents contains multiple documents, but
 * egg_desktop_file_accepts_multiple() returns %FALSE for
 * @desktop_file, then egg_desktop_file_launch() will actually launch
 * multiple instances of the application. In that case, the return
 * value (as well as any values passed via
 * %EGG_DESKTOP_FILE_LAUNCH_RETURN_PID, etc) will only reflect the
 * first instance of the application that was launched (but the
 * %EGG_DESKTOP_FILE_LAUNCH_SETUP_FUNC will be called for each
 * instance).
 *
 * Return value: %TRUE if the application was successfully launched.
 **/
gboolean
egg_desktop_file_launch (EggDesktopFile *desktop_file,
             GSList *documents, GError **error,
             ...)
{
  va_list args;
  gboolean success;
  EggDesktopFile *app_desktop_file;

  switch (desktop_file->type)
    {
    case EGG_DESKTOP_FILE_TYPE_APPLICATION:
      va_start (args, error);
      success = egg_desktop_file_launchv (desktop_file, documents,
                      args, error);
      va_end (args);
      break;

    case EGG_DESKTOP_FILE_TYPE_LINK:
      if (documents)
    {
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
               EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
               _("Can't pass document URIs to a 'Type=Link' desktop entry"));
      return FALSE;
    }

      if (!parse_link (desktop_file, &app_desktop_file, &documents, error))
    return FALSE;

      va_start (args, error);
      success = egg_desktop_file_launchv (app_desktop_file, documents,
                      args, error);
      va_end (args);

      egg_desktop_file_free (app_desktop_file);
      free_document_list (documents);
      break;

    case EGG_DESKTOP_FILE_TYPE_UNRECOGNIZED:
    case EGG_DESKTOP_FILE_TYPE_DIRECTORY:
    default:
      g_set_error (error, EGG_DESKTOP_FILE_ERROR,
           EGG_DESKTOP_FILE_ERROR_NOT_LAUNCHABLE,
           _("Not a launchable item"));
      success = FALSE;
      break;
    }

  return success;
}

GQuark
egg_desktop_file_error_quark (void)
{
  return g_quark_from_static_string ("egg-desktop_file-error-quark");
}

G_LOCK_DEFINE_STATIC (egg_desktop_file);
static EggDesktopFile *egg_desktop_file;

static void
egg_set_desktop_file_internal (const gchar *desktop_file_path,
                               gboolean set_defaults)
{
  GError *error = NULL;

  G_LOCK (egg_desktop_file);
  if (egg_desktop_file)
    egg_desktop_file_free (egg_desktop_file);

  egg_desktop_file = egg_desktop_file_new (desktop_file_path, &error);
  if (error)
    {
      g_warning ("Could not load desktop file '%s': %s",
         desktop_file_path, error->message);
      g_error_free (error);
    }

  if (set_defaults && egg_desktop_file != NULL) {
    /* Set localized application name and default window icon */
    if (egg_desktop_file->name)
      g_set_application_name (egg_desktop_file->name);
    if (egg_desktop_file->icon)
      {
    if (g_path_is_absolute (egg_desktop_file->icon))
      gtk_window_set_default_icon_from_file (egg_desktop_file->icon, NULL);
    else
      gtk_window_set_default_icon_name (egg_desktop_file->icon);
      }
  }

  G_UNLOCK (egg_desktop_file);
}

/**
 * egg_set_desktop_file:
 * @desktop_file_path: path to the application's desktop file
 *
 * Creates an #EggDesktopFile for the application from the data at
 * @desktop_file_path. This will also call g_set_application_name()
 * with the localized application name from the desktop file, and
 * gtk_window_set_default_icon_name() or
 * gtk_window_set_default_icon_from_file() with the application's
 * icon. Other code may use additional information from the desktop
 * file.
 * See egg_set_desktop_file_without_defaults() for a variant of this
 * function that does not set the application name and default window
 * icon.
 *
 * Note that for thread safety reasons, this function can only
 * be called once, and is mutually exclusive with calling
 * egg_set_desktop_file_without_defaults().
 **/
void
egg_set_desktop_file (const gchar *desktop_file_path)
{
  egg_set_desktop_file_internal (desktop_file_path, TRUE);
}

/**
 * egg_set_desktop_file_without_defaults:
 * @desktop_file_path: path to the application's desktop file
 *
 * Creates an #EggDesktopFile for the application from the data at
 * @desktop_file_path.
 * See egg_set_desktop_file() for a variant of this function that
 * sets the application name and default window icon from the information
 * in the desktop file.
 *
 * Note that for thread safety reasons, this function can only
 * be called once, and is mutually exclusive with calling
 * egg_set_desktop_file().
 **/
void
egg_set_desktop_file_without_defaults (const gchar *desktop_file_path)
{
  egg_set_desktop_file_internal (desktop_file_path, FALSE);
}

/**
 * egg_get_desktop_file:
 *
 * Gets the application's #EggDesktopFile, as set by
 * egg_set_desktop_file().
 *
 * Return value: the #EggDesktopFile, or %NULL if it hasn't been set.
 **/
EggDesktopFile *
egg_get_desktop_file (void)
{
  EggDesktopFile *retval;

  G_LOCK (egg_desktop_file);
  retval = egg_desktop_file;
  G_UNLOCK (egg_desktop_file);

  return retval;
}