1 /* GLIB - Library of useful routines for C programming
2 * Copyright (C) 1995-1998 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
20 * file for a list of people on the GLib Team. See the ChangeLog
21 * files for a list of changes. These files are distributed with
22 * GLib at ftp://ftp.gtk.org/pub/gtk/.
26 * MT safe for the unix part, FIXME: make the win32 part MT safe as well.
38 #include <ctype.h> /* For tolower() */
40 #include <sys/types.h>
46 #include <sys/types.h>
47 #ifdef HAVE_SYS_PARAM_H
48 #include <sys/param.h>
50 #ifdef HAVE_CRT_EXTERNS_H
51 #include <crt_externs.h> /* for _NSGetEnviron */
54 #include "glib-init.h"
55 #include "glib-private.h"
57 #include "gfileutils.h"
61 #include "gtestutils.h"
63 #include "gstrfuncs.h"
68 #ifdef G_PLATFORM_WIN32
76 * @title: Miscellaneous Utility Functions
77 * @short_description: a selection of portable utility functions
79 * These are portable utility functions.
82 #ifdef G_PLATFORM_WIN32
84 # ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
85 # define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 2
86 # define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 4
88 # include <lmcons.h> /* For UNLEN */
89 #endif /* G_PLATFORM_WIN32 */
94 /* older SDK (e.g. msvc 5.0) does not have these*/
95 # ifndef CSIDL_MYMUSIC
96 # define CSIDL_MYMUSIC 13
98 # ifndef CSIDL_MYVIDEO
99 # define CSIDL_MYVIDEO 14
101 # ifndef CSIDL_INTERNET_CACHE
102 # define CSIDL_INTERNET_CACHE 32
104 # ifndef CSIDL_COMMON_APPDATA
105 # define CSIDL_COMMON_APPDATA 35
107 # ifndef CSIDL_MYPICTURES
108 # define CSIDL_MYPICTURES 0x27
110 # ifndef CSIDL_COMMON_DOCUMENTS
111 # define CSIDL_COMMON_DOCUMENTS 46
113 # ifndef CSIDL_PROFILE
114 # define CSIDL_PROFILE 40
116 # include <process.h>
120 #include <CoreServices/CoreServices.h>
124 #include <langinfo.h>
127 #ifdef G_PLATFORM_WIN32
130 _glib_get_dll_directory (void)
134 wchar_t wc_fn[MAX_PATH];
137 if (glib_dll == NULL)
141 /* This code is different from that in
142 * g_win32_get_package_installation_directory_of_module() in that
143 * here we return the actual folder where the GLib DLL is. We don't
144 * do the check for it being in a "bin" or "lib" subfolder and then
145 * returning the parent of that.
147 * In a statically built GLib, glib_dll will be NULL and we will
148 * thus look up the application's .exe file's location.
150 if (!GetModuleFileNameW (glib_dll, wc_fn, MAX_PATH))
153 retval = g_utf16_to_utf8 (wc_fn, -1, NULL, NULL, NULL);
155 p = strrchr (retval, G_DIR_SEPARATOR);
170 * @dest: the destination address to copy the bytes to.
171 * @src: the source address to copy the bytes from.
172 * @len: the number of bytes to copy.
174 * Copies a block of memory @len bytes long, from @src to @dest.
175 * The source and destination areas may overlap.
177 * Deprecated:2.40: Just use memmove().
186 * @func: (scope async): the function to call on normal program termination.
188 * Specifies a function to be called at normal program termination.
190 * Since GLib 2.8.2, on Windows g_atexit() actually is a preprocessor
191 * macro that maps to a call to the atexit() function in the C
192 * library. This means that in case the code that calls g_atexit(),
193 * i.e. atexit(), is in a DLL, the function will be called when the
194 * DLL is detached from the program. This typically makes more sense
195 * than that the function is called when the GLib DLL is detached,
196 * which happened earlier when g_atexit() was a function in the GLib
199 * The behaviour of atexit() in the context of dynamically loaded
200 * modules is not formally specified and varies wildly.
202 * On POSIX systems, calling g_atexit() (or atexit()) in a dynamically
203 * loaded module which is unloaded before the program terminates might
204 * well cause a crash at program exit.
206 * Some POSIX systems implement atexit() like Windows, and have each
207 * dynamically loaded module maintain an own atexit chain that is
208 * called when the module is unloaded.
210 * On other POSIX systems, before a dynamically loaded module is
211 * unloaded, the registered atexit functions (if any) residing in that
212 * module are called, regardless where the code that registered them
213 * resided. This is presumably the most robust approach.
215 * As can be seen from the above, for portability it's best to avoid
216 * calling g_atexit() (or atexit()) except in the main executable of a
219 * Deprecated:2.32: It is best to avoid g_atexit().
222 g_atexit (GVoidFunc func)
227 result = atexit ((void (*)(void)) func);
231 g_error ("Could not register atexit() function: %s",
236 /* Based on execvp() from GNU Libc.
237 * Some of this code is cut-and-pasted into gspawn.c
241 my_strchrnul (const gchar *str,
244 gchar *p = (gchar*)str;
245 while (*p && (*p != c))
253 static gchar *inner_find_program_in_path (const gchar *program);
256 g_find_program_in_path (const gchar *program)
258 const gchar *last_dot = strrchr (program, '.');
260 if (last_dot == NULL ||
261 strchr (last_dot, '\\') != NULL ||
262 strchr (last_dot, '/') != NULL)
264 const gint program_length = strlen (program);
265 gchar *pathext = g_build_path (";",
266 ".exe;.cmd;.bat;.com",
267 g_getenv ("PATHEXT"),
270 gchar *decorated_program;
276 gchar *q = my_strchrnul (p, ';');
278 decorated_program = g_malloc (program_length + (q-p) + 1);
279 memcpy (decorated_program, program, program_length);
280 memcpy (decorated_program+program_length, p, q-p);
281 decorated_program [program_length + (q-p)] = '\0';
283 retval = inner_find_program_in_path (decorated_program);
284 g_free (decorated_program);
292 } while (*p++ != '\0');
297 return inner_find_program_in_path (program);
303 * g_find_program_in_path:
304 * @program: (type filename): a program name in the GLib file name encoding
306 * Locates the first executable named @program in the user's path, in the
307 * same way that execvp() would locate it. Returns an allocated string
308 * with the absolute path name, or %NULL if the program is not found in
309 * the path. If @program is already an absolute path, returns a copy of
310 * @program if @program exists and is executable, and %NULL otherwise.
312 * On Windows, if @program does not have a file type suffix, tries
313 * with the suffixes .exe, .cmd, .bat and .com, and the suffixes in
314 * the `PATHEXT` environment variable.
316 * On Windows, it looks for the file in the same way as CreateProcess()
317 * would. This means first in the directory where the executing
318 * program was loaded from, then in the current directory, then in the
319 * Windows 32-bit system directory, then in the Windows directory, and
320 * finally in the directories in the `PATH` environment variable. If
321 * the program is found, the return value contains the full name
322 * including the type suffix.
324 * Returns: (type filename): a newly-allocated string with the absolute path,
329 inner_find_program_in_path (const gchar *program)
332 g_find_program_in_path (const gchar *program)
335 const gchar *path, *p;
336 gchar *name, *freeme;
338 const gchar *path_copy;
339 gchar *filename = NULL, *appdir = NULL;
340 gchar *sysdir = NULL, *windir = NULL;
342 wchar_t wfilename[MAXPATHLEN], wsysdir[MAXPATHLEN],
348 g_return_val_if_fail (program != NULL, NULL);
350 /* If it is an absolute path, or a relative path including subdirectories,
351 * don't look in PATH.
353 if (g_path_is_absolute (program)
354 || strchr (program, G_DIR_SEPARATOR) != NULL
356 || strchr (program, '/') != NULL
360 if (g_file_test (program, G_FILE_TEST_IS_EXECUTABLE) &&
361 !g_file_test (program, G_FILE_TEST_IS_DIR))
362 return g_strdup (program);
367 path = g_getenv ("PATH");
368 #if defined(G_OS_UNIX)
371 /* There is no 'PATH' in the environment. The default
372 * search path in GNU libc is the current directory followed by
373 * the path 'confstr' returns for '_CS_PATH'.
376 /* In GLib we put . last, for security, and don't use the
377 * unportable confstr(); UNIX98 does not actually specify
378 * what to search if PATH is unset. POSIX may, dunno.
381 path = "/bin:/usr/bin:.";
384 n = GetModuleFileNameW (NULL, wfilename, MAXPATHLEN);
385 if (n > 0 && n < MAXPATHLEN)
386 filename = g_utf16_to_utf8 (wfilename, -1, NULL, NULL, NULL);
388 n = GetSystemDirectoryW (wsysdir, MAXPATHLEN);
389 if (n > 0 && n < MAXPATHLEN)
390 sysdir = g_utf16_to_utf8 (wsysdir, -1, NULL, NULL, NULL);
392 n = GetWindowsDirectoryW (wwindir, MAXPATHLEN);
393 if (n > 0 && n < MAXPATHLEN)
394 windir = g_utf16_to_utf8 (wwindir, -1, NULL, NULL, NULL);
398 appdir = g_path_get_dirname (filename);
402 path = g_strdup (path);
406 const gchar *tem = path;
407 path = g_strconcat (windir, ";", path, NULL);
408 g_free ((gchar *) tem);
414 const gchar *tem = path;
415 path = g_strconcat (sysdir, ";", path, NULL);
416 g_free ((gchar *) tem);
421 const gchar *tem = path;
422 path = g_strconcat (".;", path, NULL);
423 g_free ((gchar *) tem);
428 const gchar *tem = path;
429 path = g_strconcat (appdir, ";", path, NULL);
430 g_free ((gchar *) tem);
437 len = strlen (program) + 1;
438 pathlen = strlen (path);
439 freeme = name = g_malloc (pathlen + len + 1);
441 /* Copy the file name at the top, including '\0' */
442 memcpy (name + pathlen + 1, program, len);
443 name = name + pathlen;
444 /* And add the slash before the filename */
445 *name = G_DIR_SEPARATOR;
453 p = my_strchrnul (path, G_SEARCHPATH_SEPARATOR);
456 /* Two adjacent colons, or a colon at the beginning or the end
457 * of 'PATH' means to search the current directory.
461 startp = memcpy (name - (p - path), path, p - path);
463 if (g_file_test (startp, G_FILE_TEST_IS_EXECUTABLE) &&
464 !g_file_test (startp, G_FILE_TEST_IS_DIR))
467 ret = g_strdup (startp);
470 g_free ((gchar *) path_copy);
475 while (*p++ != '\0');
479 g_free ((gchar *) path_copy);
485 /* The functions below are defined this way for compatibility reasons.
486 * See the note in gutils.h.
491 * @mask: a #gulong containing flags
492 * @nth_bit: the index of the bit to start the search from
494 * Find the position of the first bit set in @mask, searching
495 * from (but not including) @nth_bit upwards. Bits are numbered
496 * from 0 (least significant) to sizeof(#gulong) * 8 - 1 (31 or 63,
497 * usually). To start searching from the 0th bit, set @nth_bit to -1.
499 * Returns: the index of the first bit set which is higher than @nth_bit, or -1
500 * if no higher bits are set
503 (g_bit_nth_lsf) (gulong mask,
506 return g_bit_nth_lsf_impl (mask, nth_bit);
511 * @mask: a #gulong containing flags
512 * @nth_bit: the index of the bit to start the search from
514 * Find the position of the first bit set in @mask, searching
515 * from (but not including) @nth_bit downwards. Bits are numbered
516 * from 0 (least significant) to sizeof(#gulong) * 8 - 1 (31 or 63,
517 * usually). To start searching from the last bit, set @nth_bit to
518 * -1 or GLIB_SIZEOF_LONG * 8.
520 * Returns: the index of the first bit set which is lower than @nth_bit, or -1
521 * if no lower bits are set
524 (g_bit_nth_msf) (gulong mask,
527 return g_bit_nth_msf_impl (mask, nth_bit);
535 * Gets the number of bits used to hold @number,
536 * e.g. if @number is 4, 3 bits are needed.
538 * Returns: the number of bits used to hold @number
541 (g_bit_storage) (gulong number)
543 return g_bit_storage_impl (number);
546 G_LOCK_DEFINE_STATIC (g_utils_global);
555 static gchar *g_user_data_dir = NULL;
556 static gchar **g_system_data_dirs = NULL;
557 static gchar *g_user_cache_dir = NULL;
558 static gchar *g_user_config_dir = NULL;
559 static gchar **g_system_config_dirs = NULL;
561 static gchar **g_user_special_dirs = NULL;
563 /* fifteen minutes of fame for everybody */
564 #define G_USER_DIRS_EXPIRE 15 * 60
569 get_special_folder (int csidl)
571 wchar_t path[MAX_PATH+1];
573 LPITEMIDLIST pidl = NULL;
575 gchar *retval = NULL;
577 hr = SHGetSpecialFolderLocation (NULL, csidl, &pidl);
580 b = SHGetPathFromIDListW (pidl, path);
582 retval = g_utf16_to_utf8 (path, -1, NULL, NULL, NULL);
583 CoTaskMemFree (pidl);
589 get_windows_directory_root (void)
591 wchar_t wwindowsdir[MAX_PATH];
593 if (GetWindowsDirectoryW (wwindowsdir, G_N_ELEMENTS (wwindowsdir)))
595 /* Usually X:\Windows, but in terminal server environments
596 * might be an UNC path, AFAIK.
598 char *windowsdir = g_utf16_to_utf8 (wwindowsdir, -1, NULL, NULL, NULL);
601 if (windowsdir == NULL)
602 return g_strdup ("C:\\");
604 p = (char *) g_path_skip_root (windowsdir);
605 if (G_IS_DIR_SEPARATOR (p[-1]) && p[-2] != ':')
611 return g_strdup ("C:\\");
616 /* HOLDS: g_utils_global_lock */
617 static UserDatabaseEntry *
618 g_get_user_database_entry (void)
620 static UserDatabaseEntry *entry;
622 if (g_once_init_enter (&entry))
624 static UserDatabaseEntry e;
628 struct passwd *pw = NULL;
629 gpointer buffer = NULL;
633 # if defined (HAVE_GETPWUID_R)
635 # ifdef _SC_GETPW_R_SIZE_MAX
636 /* This reurns the maximum length */
637 glong bufsize = sysconf (_SC_GETPW_R_SIZE_MAX);
641 # else /* _SC_GETPW_R_SIZE_MAX */
643 # endif /* _SC_GETPW_R_SIZE_MAX */
645 logname = (gchar *) g_getenv ("LOGNAME");
650 /* we allocate 6 extra bytes to work around a bug in
651 * Mac OS < 10.3. See #156446
653 buffer = g_malloc (bufsize + 6);
657 error = getpwnam_r (logname, &pwd, buffer, bufsize, &pw);
658 if (!pw || (pw->pw_uid != getuid ())) {
659 /* LOGNAME is lying, fall back to looking up the uid */
660 error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
663 error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
665 error = error < 0 ? errno : error;
669 /* we bail out prematurely if the user id can't be found
670 * (should be pretty rare case actually), or if the buffer
671 * should be sufficiently big and lookups are still not
674 if (error == 0 || error == ENOENT)
676 g_warning ("getpwuid_r(): failed due to unknown user id (%lu)",
680 if (bufsize > 32 * 1024)
682 g_warning ("getpwuid_r(): failed due to: %s.",
691 # endif /* HAVE_GETPWUID_R */
695 pw = getpwuid (getuid ());
699 e.user_name = g_strdup (pw->pw_name);
702 if (pw->pw_gecos && *pw->pw_gecos != '\0')
704 gchar **gecos_fields;
707 /* split the gecos field and substitute '&' */
708 gecos_fields = g_strsplit (pw->pw_gecos, ",", 0);
709 name_parts = g_strsplit (gecos_fields[0], "&", 0);
710 pw->pw_name[0] = g_ascii_toupper (pw->pw_name[0]);
711 e.real_name = g_strjoinv (pw->pw_name, name_parts);
712 g_strfreev (gecos_fields);
713 g_strfreev (name_parts);
718 e.home_dir = g_strdup (pw->pw_dir);
723 #endif /* G_OS_UNIX */
728 wchar_t buffer[UNLEN+1];
730 if (GetUserNameW (buffer, (LPDWORD) &len))
732 e.user_name = g_utf16_to_utf8 (buffer, -1, NULL, NULL, NULL);
733 e.real_name = g_strdup (e.user_name);
736 #endif /* G_OS_WIN32 */
739 e.user_name = g_strdup ("somebody");
741 e.real_name = g_strdup ("Unknown");
743 g_once_init_leave (&entry, &e);
752 * Gets the user name of the current user. The encoding of the returned
753 * string is system-defined. On UNIX, it might be the preferred file name
754 * encoding, or something else, and there is no guarantee that it is even
755 * consistent on a machine. On Windows, it is always UTF-8.
757 * Returns: (type filename): the user name of the current user.
760 g_get_user_name (void)
762 UserDatabaseEntry *entry;
764 entry = g_get_user_database_entry ();
766 return entry->user_name;
772 * Gets the real name of the user. This usually comes from the user's
773 * entry in the `passwd` file. The encoding of the returned string is
774 * system-defined. (On Windows, it is, however, always UTF-8.) If the
775 * real user name cannot be determined, the string "Unknown" is
778 * Returns: (type filename): the user's real name.
781 g_get_real_name (void)
783 UserDatabaseEntry *entry;
785 entry = g_get_user_database_entry ();
787 return entry->real_name;
793 * Gets the current user's home directory.
795 * As with most UNIX tools, this function will return the value of the
796 * `HOME` environment variable if it is set to an existing absolute path
797 * name, falling back to the `passwd` file in the case that it is unset.
799 * If the path given in `HOME` is non-absolute, does not exist, or is
800 * not a directory, the result is undefined.
802 * Before version 2.36 this function would ignore the `HOME` environment
803 * variable, taking the value from the `passwd` database instead. This was
804 * changed to increase the compatibility of GLib with other programs (and
805 * the XDG basedir specification) and to increase testability of programs
806 * based on GLib (by making it easier to run them from test frameworks).
808 * If your program has a strong requirement for either the new or the
809 * old behaviour (and if you don't wish to increase your GLib
810 * dependency to ensure that the new behaviour is in effect) then you
811 * should either directly check the `HOME` environment variable yourself
812 * or unset it before calling any functions in GLib.
814 * Returns: (type filename): the current user's home directory
817 g_get_home_dir (void)
819 static gchar *home_dir;
821 if (g_once_init_enter (&home_dir))
825 /* We first check HOME and use it if it is set */
826 tmp = g_strdup (g_getenv ("HOME"));
829 /* Only believe HOME if it is an absolute path and exists.
831 * We only do this check on Windows for a couple of reasons.
832 * Historically, we only did it there because we used to ignore $HOME
833 * on UNIX. There are concerns about enabling it now on UNIX because
834 * of things like autofs. In short, if the user has a bogus value in
835 * $HOME then they get what they pay for...
839 if (!(g_path_is_absolute (tmp) &&
840 g_file_test (tmp, G_FILE_TEST_IS_DIR)))
847 /* In case HOME is Unix-style (it happens), convert it to
853 while ((p = strchr (tmp, '/')) != NULL)
859 /* USERPROFILE is probably the closest equivalent to $HOME? */
860 if (g_getenv ("USERPROFILE") != NULL)
861 tmp = g_strdup (g_getenv ("USERPROFILE"));
865 tmp = get_special_folder (CSIDL_PROFILE);
868 tmp = get_windows_directory_root ();
869 #endif /* G_OS_WIN32 */
873 /* If we didn't get it from any of those methods, we will have
874 * to read the user database entry.
876 UserDatabaseEntry *entry;
878 entry = g_get_user_database_entry ();
880 /* Strictly speaking, we should copy this, but we know that
881 * neither will ever be freed, so don't bother...
883 tmp = entry->home_dir;
886 g_once_init_leave (&home_dir, tmp);
895 * Gets the directory to use for temporary files.
897 * On UNIX, this is taken from the `TMPDIR` environment variable.
898 * If the variable is not set, `P_tmpdir` is
899 * used, as defined by the system C library. Failing that, a
900 * hard-coded default of "/tmp" is returned.
902 * On Windows, the `TEMP` environment variable is used, with the
903 * root directory of the Windows installation (eg: "C:\") used
906 * The encoding of the returned string is system-defined. On Windows,
907 * it is always UTF-8. The return value is never %NULL or the empty
910 * Returns: (type filename): the directory to use for temporary files.
915 static gchar *tmp_dir;
917 if (g_once_init_enter (&tmp_dir))
922 tmp = g_strdup (g_getenv ("TEMP"));
924 if (tmp == NULL || *tmp == '\0')
927 tmp = get_windows_directory_root ();
929 #else /* G_OS_WIN32 */
930 tmp = g_strdup (g_getenv ("TMPDIR"));
933 if (tmp == NULL || *tmp == '\0')
937 tmp = g_strdup (P_tmpdir);
939 if (k > 1 && G_IS_DIR_SEPARATOR (tmp[k - 1]))
942 #endif /* P_tmpdir */
944 if (tmp == NULL || *tmp == '\0')
947 tmp = g_strdup ("/tmp");
949 #endif /* !G_OS_WIN32 */
951 g_once_init_leave (&tmp_dir, tmp);
960 * Return a name for the machine.
962 * The returned name is not necessarily a fully-qualified domain name,
963 * or even present in DNS or some other name service at all. It need
964 * not even be unique on your local network or site, but usually it
965 * is. Callers should not rely on the return value having any specific
966 * properties like uniqueness for security purposes. Even if the name
967 * of the machine is changed while an application is running, the
968 * return value from this function does not change. The returned
969 * string is owned by GLib and should not be modified or freed. If no
970 * name can be determined, a default fixed string "localhost" is
973 * The encoding of the returned string is UTF-8.
975 * Returns: the host name of the machine.
980 g_get_host_name (void)
982 static gchar *hostname;
984 if (g_once_init_enter (&hostname))
990 gchar *tmp = g_malloc (sizeof (gchar) * 100);
991 failed = (gethostname (tmp, sizeof (gchar) * 100) == -1);
993 g_clear_pointer (&tmp, g_free);
996 wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1];
997 DWORD size = sizeof (tmp) / sizeof (tmp[0]);
998 failed = (!GetComputerNameW (tmp, &size));
1000 utmp = g_utf16_to_utf8 (tmp, size, NULL, NULL, NULL);
1005 g_once_init_leave (&hostname, failed ? g_strdup ("localhost") : utmp);
1011 G_LOCK_DEFINE_STATIC (g_prgname);
1012 static gchar *g_prgname = NULL;
1017 * Gets the name of the program. This name should not be localized,
1018 * in contrast to g_get_application_name().
1020 * If you are using #GApplication the program name is set in
1021 * g_application_run(). In case of GDK or GTK+ it is set in
1022 * gdk_init(), which is called by gtk_init() and the
1023 * #GtkApplication::startup handler. The program name is found by
1024 * taking the last component of @argv[0].
1026 * Returns: the name of the program. The returned string belongs
1027 * to GLib and must not be modified or freed.
1030 g_get_prgname (void)
1036 if (g_prgname == NULL)
1038 static gboolean beenhere = FALSE;
1042 gchar *utf8_buf = NULL;
1043 wchar_t buf[MAX_PATH+1];
1046 if (GetModuleFileNameW (GetModuleHandle (NULL),
1047 buf, G_N_ELEMENTS (buf)) > 0)
1048 utf8_buf = g_utf16_to_utf8 (buf, -1, NULL, NULL, NULL);
1052 g_prgname = g_path_get_basename (utf8_buf);
1059 G_UNLOCK (g_prgname);
1066 * @prgname: the name of the program.
1068 * Sets the name of the program. This name should not be localized,
1069 * in contrast to g_set_application_name().
1071 * If you are using #GApplication the program name is set in
1072 * g_application_run(). In case of GDK or GTK+ it is set in
1073 * gdk_init(), which is called by gtk_init() and the
1074 * #GtkApplication::startup handler. The program name is found by
1075 * taking the last component of @argv[0].
1077 * Note that for thread-safety reasons this function can only be called once.
1080 g_set_prgname (const gchar *prgname)
1084 g_prgname = g_strdup (prgname);
1085 G_UNLOCK (g_prgname);
1088 G_LOCK_DEFINE_STATIC (g_application_name);
1089 static gchar *g_application_name = NULL;
1092 * g_get_application_name:
1094 * Gets a human-readable name for the application, as set by
1095 * g_set_application_name(). This name should be localized if
1096 * possible, and is intended for display to the user. Contrast with
1097 * g_get_prgname(), which gets a non-localized name. If
1098 * g_set_application_name() has not been called, returns the result of
1099 * g_get_prgname() (which may be %NULL if g_set_prgname() has also not
1102 * Returns: human-readable application name. may return %NULL
1107 g_get_application_name (void)
1111 G_LOCK (g_application_name);
1112 retval = g_application_name;
1113 G_UNLOCK (g_application_name);
1116 return g_get_prgname ();
1122 * g_set_application_name:
1123 * @application_name: localized name of the application
1125 * Sets a human-readable name for the application. This name should be
1126 * localized if possible, and is intended for display to the user.
1127 * Contrast with g_set_prgname(), which sets a non-localized name.
1128 * g_set_prgname() will be called automatically by gtk_init(),
1129 * but g_set_application_name() will not.
1131 * Note that for thread safety reasons, this function can only
1134 * The application name will be used in contexts such as error messages,
1135 * or when displaying an application's name in the task list.
1140 g_set_application_name (const gchar *application_name)
1142 gboolean already_set = FALSE;
1144 G_LOCK (g_application_name);
1145 if (g_application_name)
1148 g_application_name = g_strdup (application_name);
1149 G_UNLOCK (g_application_name);
1152 g_warning ("g_set_application_name() called multiple times");
1156 * g_get_user_data_dir:
1158 * Returns a base directory in which to access application data such
1159 * as icons that is customized for a particular user.
1161 * On UNIX platforms this is determined using the mechanisms described
1163 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec).
1164 * In this case the directory retrieved will be `XDG_DATA_HOME`.
1166 * On Windows it follows XDG Base Directory Specification if `XDG_DATA_HOME`
1167 * is defined. If `XDG_DATA_HOME` is undefined, the folder to use for local (as
1168 * opposed to roaming) application data is used instead. See the
1169 * [documentation for `CSIDL_LOCAL_APPDATA`](https://msdn.microsoft.com/en-us/library/windows/desktop/bb762494%28v=vs.85%29.aspx#csidl_local_appdata).
1170 * Note that in this case on Windows it will be the same
1171 * as what g_get_user_config_dir() returns.
1173 * Returns: (type filename): a string owned by GLib that must not be modified
1178 g_get_user_data_dir (void)
1180 gchar *data_dir = NULL;
1182 G_LOCK (g_utils_global);
1184 if (!g_user_data_dir)
1186 const gchar *data_dir_env = g_getenv ("XDG_DATA_HOME");
1188 if (data_dir_env && data_dir_env[0])
1189 data_dir = g_strdup (data_dir_env);
1192 data_dir = get_special_folder (CSIDL_LOCAL_APPDATA);
1194 if (!data_dir || !data_dir[0])
1196 const gchar *home_dir = g_get_home_dir ();
1199 data_dir = g_build_filename (home_dir, ".local", "share", NULL);
1201 data_dir = g_build_filename (g_get_tmp_dir (), g_get_user_name (), ".local", "share", NULL);
1204 g_user_data_dir = data_dir;
1207 data_dir = g_user_data_dir;
1209 G_UNLOCK (g_utils_global);
1215 g_init_user_config_dir (void)
1217 gchar *config_dir = NULL;
1219 if (!g_user_config_dir)
1221 const gchar *config_dir_env = g_getenv ("XDG_CONFIG_HOME");
1223 if (config_dir_env && config_dir_env[0])
1224 config_dir = g_strdup (config_dir_env);
1227 config_dir = get_special_folder (CSIDL_LOCAL_APPDATA);
1229 if (!config_dir || !config_dir[0])
1231 const gchar *home_dir = g_get_home_dir ();
1234 config_dir = g_build_filename (home_dir, ".config", NULL);
1236 config_dir = g_build_filename (g_get_tmp_dir (), g_get_user_name (), ".config", NULL);
1239 g_user_config_dir = config_dir;
1244 * g_get_user_config_dir:
1246 * Returns a base directory in which to store user-specific application
1247 * configuration information such as user preferences and settings.
1249 * On UNIX platforms this is determined using the mechanisms described
1251 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec).
1252 * In this case the directory retrieved will be `XDG_CONFIG_HOME`.
1254 * On Windows it follows XDG Base Directory Specification if `XDG_CONFIG_HOME` is defined.
1255 * If `XDG_CONFIG_HOME` is undefined, the folder to use for local (as opposed
1256 * to roaming) application data is used instead. See the
1257 * [documentation for `CSIDL_LOCAL_APPDATA`](https://msdn.microsoft.com/en-us/library/windows/desktop/bb762494%28v=vs.85%29.aspx#csidl_local_appdata).
1258 * Note that in this case on Windows it will be the same
1259 * as what g_get_user_data_dir() returns.
1261 * Returns: (type filename): a string owned by GLib that must not be modified
1266 g_get_user_config_dir (void)
1268 G_LOCK (g_utils_global);
1270 g_init_user_config_dir ();
1272 G_UNLOCK (g_utils_global);
1274 return g_user_config_dir;
1278 * g_get_user_cache_dir:
1280 * Returns a base directory in which to store non-essential, cached
1281 * data specific to particular user.
1283 * On UNIX platforms this is determined using the mechanisms described
1285 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec).
1286 * In this case the directory retrieved will be `XDG_CACHE_HOME`.
1288 * On Windows it follows XDG Base Directory Specification if `XDG_CACHE_HOME` is defined.
1289 * If `XDG_CACHE_HOME` is undefined, the directory that serves as a common
1290 * repository for temporary Internet files is used instead. A typical path is
1291 * `C:\Documents and Settings\username\Local Settings\Temporary Internet Files`.
1292 * See the [documentation for `CSIDL_INTERNET_CACHE`](https://msdn.microsoft.com/en-us/library/windows/desktop/bb762494%28v=vs.85%29.aspx#csidl_internet_cache).
1294 * Returns: (type filename): a string owned by GLib that must not be modified
1299 g_get_user_cache_dir (void)
1301 gchar *cache_dir = NULL;
1303 G_LOCK (g_utils_global);
1305 if (!g_user_cache_dir)
1307 const gchar *cache_dir_env = g_getenv ("XDG_CACHE_HOME");
1309 if (cache_dir_env && cache_dir_env[0])
1310 cache_dir = g_strdup (cache_dir_env);
1313 cache_dir = get_special_folder (CSIDL_INTERNET_CACHE);
1315 if (!cache_dir || !cache_dir[0])
1317 const gchar *home_dir = g_get_home_dir ();
1320 cache_dir = g_build_filename (home_dir, ".cache", NULL);
1322 cache_dir = g_build_filename (g_get_tmp_dir (), g_get_user_name (), ".cache", NULL);
1324 g_user_cache_dir = cache_dir;
1327 cache_dir = g_user_cache_dir;
1329 G_UNLOCK (g_utils_global);
1335 * g_get_user_runtime_dir:
1337 * Returns a directory that is unique to the current user on the local
1340 * This is determined using the mechanisms described
1342 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec).
1343 * This is the directory
1344 * specified in the `XDG_RUNTIME_DIR` environment variable.
1345 * In the case that this variable is not set, we return the value of
1346 * g_get_user_cache_dir(), after verifying that it exists.
1348 * Returns: (type filename): a string owned by GLib that must not be
1349 * modified or freed.
1354 g_get_user_runtime_dir (void)
1356 static const gchar *runtime_dir;
1358 if (g_once_init_enter (&runtime_dir))
1362 dir = g_strdup (getenv ("XDG_RUNTIME_DIR"));
1366 /* No need to strdup this one since it is valid forever. */
1367 dir = g_get_user_cache_dir ();
1369 /* The user should be able to rely on the directory existing
1370 * when the function returns. Probably it already does, but
1371 * let's make sure. Just do mkdir() directly since it will be
1372 * no more expensive than a stat() in the case that the
1373 * directory already exists and is a lot easier.
1375 * $XDG_CACHE_HOME is probably ~/.cache/ so as long as $HOME
1376 * exists this will work. If the user changed $XDG_CACHE_HOME
1377 * then they can make sure that it exists...
1379 (void) g_mkdir (dir, 0700);
1382 g_assert (dir != NULL);
1384 g_once_init_leave (&runtime_dir, dir);
1393 find_folder (OSType type)
1395 gchar *filename = NULL;
1398 if (FSFindFolder (kUserDomain, type, kDontCreateFolder, &found) == noErr)
1400 CFURLRef url = CFURLCreateFromFSRef (kCFAllocatorSystemDefault, &found);
1404 CFStringRef path = CFURLCopyFileSystemPath (url, kCFURLPOSIXPathStyle);
1408 filename = g_strdup (CFStringGetCStringPtr (path, kCFStringEncodingUTF8));
1412 filename = g_new0 (gchar, CFStringGetLength (path) * 3 + 1);
1414 CFStringGetCString (path, filename,
1415 CFStringGetLength (path) * 3 + 1,
1416 kCFStringEncodingUTF8);
1430 load_user_special_dirs (void)
1432 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] = find_folder (kDesktopFolderType);
1433 g_user_special_dirs[G_USER_DIRECTORY_DOCUMENTS] = find_folder (kDocumentsFolderType);
1434 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = find_folder (kDesktopFolderType); /* XXX correct ? */
1435 g_user_special_dirs[G_USER_DIRECTORY_MUSIC] = find_folder (kMusicDocumentsFolderType);
1436 g_user_special_dirs[G_USER_DIRECTORY_PICTURES] = find_folder (kPictureDocumentsFolderType);
1437 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = NULL;
1438 g_user_special_dirs[G_USER_DIRECTORY_TEMPLATES] = NULL;
1439 g_user_special_dirs[G_USER_DIRECTORY_VIDEOS] = find_folder (kMovieDocumentsFolderType);
1442 #elif defined(G_OS_WIN32)
1445 load_user_special_dirs (void)
1447 typedef HRESULT (WINAPI *t_SHGetKnownFolderPath) (const GUID *rfid,
1451 t_SHGetKnownFolderPath p_SHGetKnownFolderPath;
1453 static const GUID FOLDERID_Downloads =
1454 { 0x374de290, 0x123f, 0x4565, { 0x91, 0x64, 0x39, 0xc4, 0x92, 0x5e, 0x46, 0x7b } };
1455 static const GUID FOLDERID_Public =
1456 { 0xDFDF76A2, 0xC82A, 0x4D63, { 0x90, 0x6A, 0x56, 0x44, 0xAC, 0x45, 0x73, 0x85 } };
1460 p_SHGetKnownFolderPath = (t_SHGetKnownFolderPath) GetProcAddress (GetModuleHandle ("shell32.dll"),
1461 "SHGetKnownFolderPath");
1463 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1464 g_user_special_dirs[G_USER_DIRECTORY_DOCUMENTS] = get_special_folder (CSIDL_PERSONAL);
1466 if (p_SHGetKnownFolderPath == NULL)
1468 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1473 (*p_SHGetKnownFolderPath) (&FOLDERID_Downloads, 0, NULL, &wcp);
1476 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = g_utf16_to_utf8 (wcp, -1, NULL, NULL, NULL);
1477 if (g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] == NULL)
1478 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1479 CoTaskMemFree (wcp);
1482 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1485 g_user_special_dirs[G_USER_DIRECTORY_MUSIC] = get_special_folder (CSIDL_MYMUSIC);
1486 g_user_special_dirs[G_USER_DIRECTORY_PICTURES] = get_special_folder (CSIDL_MYPICTURES);
1488 if (p_SHGetKnownFolderPath == NULL)
1491 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1496 (*p_SHGetKnownFolderPath) (&FOLDERID_Public, 0, NULL, &wcp);
1499 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = g_utf16_to_utf8 (wcp, -1, NULL, NULL, NULL);
1500 if (g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] == NULL)
1501 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1502 CoTaskMemFree (wcp);
1505 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1508 g_user_special_dirs[G_USER_DIRECTORY_TEMPLATES] = get_special_folder (CSIDL_TEMPLATES);
1509 g_user_special_dirs[G_USER_DIRECTORY_VIDEOS] = get_special_folder (CSIDL_MYVIDEO);
1512 #else /* default is unix */
1514 /* adapted from xdg-user-dir-lookup.c
1516 * Copyright (C) 2007 Red Hat Inc.
1518 * Permission is hereby granted, free of charge, to any person
1519 * obtaining a copy of this software and associated documentation files
1520 * (the "Software"), to deal in the Software without restriction,
1521 * including without limitation the rights to use, copy, modify, merge,
1522 * publish, distribute, sublicense, and/or sell copies of the Software,
1523 * and to permit persons to whom the Software is furnished to do so,
1524 * subject to the following conditions:
1526 * The above copyright notice and this permission notice shall be
1527 * included in all copies or substantial portions of the Software.
1529 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
1530 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
1531 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
1532 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
1533 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
1534 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
1535 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
1539 load_user_special_dirs (void)
1546 g_init_user_config_dir ();
1547 config_file = g_build_filename (g_user_config_dir,
1551 if (!g_file_get_contents (config_file, &data, NULL, NULL))
1553 g_free (config_file);
1557 lines = g_strsplit (data, "\n", -1);
1558 n_lines = g_strv_length (lines);
1561 for (i = 0; i < n_lines; i++)
1563 gchar *buffer = lines[i];
1566 gboolean is_relative = FALSE;
1567 GUserDirectory directory;
1569 /* Remove newline at end */
1570 len = strlen (buffer);
1571 if (len > 0 && buffer[len - 1] == '\n')
1572 buffer[len - 1] = 0;
1575 while (*p == ' ' || *p == '\t')
1578 if (strncmp (p, "XDG_DESKTOP_DIR", strlen ("XDG_DESKTOP_DIR")) == 0)
1580 directory = G_USER_DIRECTORY_DESKTOP;
1581 p += strlen ("XDG_DESKTOP_DIR");
1583 else if (strncmp (p, "XDG_DOCUMENTS_DIR", strlen ("XDG_DOCUMENTS_DIR")) == 0)
1585 directory = G_USER_DIRECTORY_DOCUMENTS;
1586 p += strlen ("XDG_DOCUMENTS_DIR");
1588 else if (strncmp (p, "XDG_DOWNLOAD_DIR", strlen ("XDG_DOWNLOAD_DIR")) == 0)
1590 directory = G_USER_DIRECTORY_DOWNLOAD;
1591 p += strlen ("XDG_DOWNLOAD_DIR");
1593 else if (strncmp (p, "XDG_MUSIC_DIR", strlen ("XDG_MUSIC_DIR")) == 0)
1595 directory = G_USER_DIRECTORY_MUSIC;
1596 p += strlen ("XDG_MUSIC_DIR");
1598 else if (strncmp (p, "XDG_PICTURES_DIR", strlen ("XDG_PICTURES_DIR")) == 0)
1600 directory = G_USER_DIRECTORY_PICTURES;
1601 p += strlen ("XDG_PICTURES_DIR");
1603 else if (strncmp (p, "XDG_PUBLICSHARE_DIR", strlen ("XDG_PUBLICSHARE_DIR")) == 0)
1605 directory = G_USER_DIRECTORY_PUBLIC_SHARE;
1606 p += strlen ("XDG_PUBLICSHARE_DIR");
1608 else if (strncmp (p, "XDG_TEMPLATES_DIR", strlen ("XDG_TEMPLATES_DIR")) == 0)
1610 directory = G_USER_DIRECTORY_TEMPLATES;
1611 p += strlen ("XDG_TEMPLATES_DIR");
1613 else if (strncmp (p, "XDG_VIDEOS_DIR", strlen ("XDG_VIDEOS_DIR")) == 0)
1615 directory = G_USER_DIRECTORY_VIDEOS;
1616 p += strlen ("XDG_VIDEOS_DIR");
1621 while (*p == ' ' || *p == '\t')
1628 while (*p == ' ' || *p == '\t')
1635 if (strncmp (p, "$HOME", 5) == 0)
1643 d = strrchr (p, '"');
1650 /* remove trailing slashes */
1652 if (d[len - 1] == '/')
1657 g_user_special_dirs[directory] = g_build_filename (g_get_home_dir (), d, NULL);
1660 g_user_special_dirs[directory] = g_strdup (d);
1664 g_free (config_file);
1667 #endif /* platform-specific load_user_special_dirs implementations */
1671 * g_reload_user_special_dirs_cache:
1673 * Resets the cache used for g_get_user_special_dir(), so
1674 * that the latest on-disk version is used. Call this only
1675 * if you just changed the data on disk yourself.
1677 * Due to threadsafety issues this may cause leaking of strings
1678 * that were previously returned from g_get_user_special_dir()
1679 * that can't be freed. We ensure to only leak the data for
1680 * the directories that actually changed value though.
1685 g_reload_user_special_dirs_cache (void)
1689 G_LOCK (g_utils_global);
1691 if (g_user_special_dirs != NULL)
1693 /* save a copy of the pointer, to check if some memory can be preserved */
1694 char **old_g_user_special_dirs = g_user_special_dirs;
1697 /* recreate and reload our cache */
1698 g_user_special_dirs = g_new0 (gchar *, G_USER_N_DIRECTORIES);
1699 load_user_special_dirs ();
1701 /* only leak changed directories */
1702 for (i = 0; i < G_USER_N_DIRECTORIES; i++)
1704 old_val = old_g_user_special_dirs[i];
1705 if (g_user_special_dirs[i] == NULL)
1707 g_user_special_dirs[i] = old_val;
1709 else if (g_strcmp0 (old_val, g_user_special_dirs[i]) == 0)
1712 g_free (g_user_special_dirs[i]);
1713 g_user_special_dirs[i] = old_val;
1719 /* free the old array */
1720 g_free (old_g_user_special_dirs);
1723 G_UNLOCK (g_utils_global);
1727 * g_get_user_special_dir:
1728 * @directory: the logical id of special directory
1730 * Returns the full path of a special directory using its logical id.
1732 * On UNIX this is done using the XDG special user directories.
1733 * For compatibility with existing practise, %G_USER_DIRECTORY_DESKTOP
1734 * falls back to `$HOME/Desktop` when XDG special user directories have
1737 * Depending on the platform, the user might be able to change the path
1738 * of the special directory without requiring the session to restart; GLib
1739 * will not reflect any change once the special directories are loaded.
1741 * Returns: (type filename): the path to the specified special directory, or
1742 * %NULL if the logical id was not found. The returned string is owned by
1743 * GLib and should not be modified or freed.
1748 g_get_user_special_dir (GUserDirectory directory)
1750 g_return_val_if_fail (directory >= G_USER_DIRECTORY_DESKTOP &&
1751 directory < G_USER_N_DIRECTORIES, NULL);
1753 G_LOCK (g_utils_global);
1755 if (G_UNLIKELY (g_user_special_dirs == NULL))
1757 g_user_special_dirs = g_new0 (gchar *, G_USER_N_DIRECTORIES);
1759 load_user_special_dirs ();
1761 /* Special-case desktop for historical compatibility */
1762 if (g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] == NULL)
1763 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] = g_build_filename (g_get_home_dir (), "Desktop", NULL);
1766 G_UNLOCK (g_utils_global);
1768 return g_user_special_dirs[directory];
1773 #undef g_get_system_data_dirs
1776 get_module_for_address (gconstpointer address)
1778 /* Holds the g_utils_global lock */
1780 static gboolean beenhere = FALSE;
1781 typedef BOOL (WINAPI *t_GetModuleHandleExA) (DWORD, LPCTSTR, HMODULE *);
1782 static t_GetModuleHandleExA p_GetModuleHandleExA = NULL;
1783 HMODULE hmodule = NULL;
1790 p_GetModuleHandleExA =
1791 (t_GetModuleHandleExA) GetProcAddress (GetModuleHandle ("kernel32.dll"),
1792 "GetModuleHandleExA");
1796 if (p_GetModuleHandleExA == NULL ||
1797 !(*p_GetModuleHandleExA) (GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT |
1798 GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
1801 MEMORY_BASIC_INFORMATION mbi;
1802 VirtualQuery (address, &mbi, sizeof (mbi));
1803 hmodule = (HMODULE) mbi.AllocationBase;
1810 get_module_share_dir (gconstpointer address)
1816 hmodule = get_module_for_address (address);
1817 if (hmodule == NULL)
1820 filename = g_win32_get_package_installation_directory_of_module (hmodule);
1821 retval = g_build_filename (filename, "share", NULL);
1827 static const gchar * const *
1828 g_win32_get_system_data_dirs_for_module_real (void (*address_of_function)(void))
1832 static GHashTable *per_module_data_dirs = NULL;
1838 if (address_of_function)
1840 G_LOCK (g_utils_global);
1841 hmodule = get_module_for_address (address_of_function);
1842 if (hmodule != NULL)
1844 if (per_module_data_dirs == NULL)
1845 per_module_data_dirs = g_hash_table_new (NULL, NULL);
1848 retval = g_hash_table_lookup (per_module_data_dirs, hmodule);
1852 G_UNLOCK (g_utils_global);
1853 return (const gchar * const *) retval;
1859 data_dirs = g_array_new (TRUE, TRUE, sizeof (char *));
1861 /* Documents and Settings\All Users\Application Data */
1862 p = get_special_folder (CSIDL_COMMON_APPDATA);
1864 g_array_append_val (data_dirs, p);
1866 /* Documents and Settings\All Users\Documents */
1867 p = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1869 g_array_append_val (data_dirs, p);
1871 /* Using the above subfolders of Documents and Settings perhaps
1872 * makes sense from a Windows perspective.
1874 * But looking at the actual use cases of this function in GTK+
1875 * and GNOME software, what we really want is the "share"
1876 * subdirectory of the installation directory for the package
1877 * our caller is a part of.
1879 * The address_of_function parameter, if non-NULL, points to a
1880 * function in the calling module. Use that to determine that
1881 * module's installation folder, and use its "share" subfolder.
1883 * Additionally, also use the "share" subfolder of the installation
1884 * locations of GLib and the .exe file being run.
1886 * To guard against none of the above being what is really wanted,
1887 * callers of this function should have Win32-specific code to look
1888 * up their installation folder themselves, and handle a subfolder
1889 * "share" of it in the same way as the folders returned from this
1893 p = get_module_share_dir (address_of_function);
1895 g_array_append_val (data_dirs, p);
1897 if (glib_dll != NULL)
1899 gchar *glib_root = g_win32_get_package_installation_directory_of_module (glib_dll);
1900 p = g_build_filename (glib_root, "share", NULL);
1902 g_array_append_val (data_dirs, p);
1906 exe_root = g_win32_get_package_installation_directory_of_module (NULL);
1907 p = g_build_filename (exe_root, "share", NULL);
1909 g_array_append_val (data_dirs, p);
1912 retval = (gchar **) g_array_free (data_dirs, FALSE);
1914 if (address_of_function)
1916 if (hmodule != NULL)
1917 g_hash_table_insert (per_module_data_dirs, hmodule, retval);
1918 G_UNLOCK (g_utils_global);
1921 return (const gchar * const *) retval;
1924 const gchar * const *
1925 g_win32_get_system_data_dirs_for_module (void (*address_of_function)(void))
1927 gboolean should_call_g_get_system_data_dirs;
1929 should_call_g_get_system_data_dirs = TRUE;
1930 /* These checks are the same as the ones that g_get_system_data_dirs() does.
1931 * Please keep them in sync.
1933 G_LOCK (g_utils_global);
1935 if (!g_system_data_dirs)
1937 const gchar *data_dirs = g_getenv ("XDG_DATA_DIRS");
1939 if (!data_dirs || !data_dirs[0])
1940 should_call_g_get_system_data_dirs = FALSE;
1943 G_UNLOCK (g_utils_global);
1945 /* There is a subtle difference between g_win32_get_system_data_dirs_for_module (NULL),
1946 * which is what GLib code can normally call,
1947 * and g_win32_get_system_data_dirs_for_module (&_g_win32_get_system_data_dirs),
1948 * which is what the inline function used by non-GLib code calls.
1949 * The former gets prefix relative to currently-running executable,
1950 * the latter - relative to the module that calls _g_win32_get_system_data_dirs()
1951 * (disguised as g_get_system_data_dirs()), which could be an executable or
1952 * a DLL that is located somewhere else.
1953 * This is why that inline function in gutils.h exists, and why we can't just
1954 * call g_get_system_data_dirs() from there - because we need to get the address
1955 * local to the non-GLib caller-module.
1959 * g_get_system_data_dirs() will fall back to calling
1960 * g_win32_get_system_data_dirs_for_module_real(NULL) if XDG_DATA_DIRS is NULL
1961 * or an empty string. The checks above ensure that we do not call it in such
1962 * cases and use the address_of_function that we've been given by the inline function.
1963 * The reason we're calling g_get_system_data_dirs /at all/ is to give
1964 * XDG_DATA_DIRS precedence (if it is set).
1966 if (should_call_g_get_system_data_dirs)
1967 return g_get_system_data_dirs ();
1969 return g_win32_get_system_data_dirs_for_module_real (address_of_function);
1975 * g_get_system_data_dirs:
1977 * Returns an ordered list of base directories in which to access
1978 * system-wide application data.
1980 * On UNIX platforms this is determined using the mechanisms described
1982 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec)
1983 * In this case the list of directories retrieved will be `XDG_DATA_DIRS`.
1985 * On Windows it follows XDG Base Directory Specification if `XDG_DATA_DIRS` is defined.
1986 * If `XDG_DATA_DIRS` is undefined,
1987 * the first elements in the list are the Application Data
1988 * and Documents folders for All Users. (These can be determined only
1989 * on Windows 2000 or later and are not present in the list on other
1990 * Windows versions.) See documentation for CSIDL_COMMON_APPDATA and
1991 * CSIDL_COMMON_DOCUMENTS.
1993 * Then follows the "share" subfolder in the installation folder for
1994 * the package containing the DLL that calls this function, if it can
1997 * Finally the list contains the "share" subfolder in the installation
1998 * folder for GLib, and in the installation folder for the package the
1999 * application's .exe file belongs to.
2001 * The installation folders above are determined by looking up the
2002 * folder where the module (DLL or EXE) in question is located. If the
2003 * folder's name is "bin", its parent is used, otherwise the folder
2006 * Note that on Windows the returned list can vary depending on where
2007 * this function is called.
2009 * Returns: (array zero-terminated=1) (element-type filename) (transfer none):
2010 * a %NULL-terminated array of strings owned by GLib that must not be
2011 * modified or freed.
2015 const gchar * const *
2016 g_get_system_data_dirs (void)
2018 gchar **data_dir_vector;
2020 /* These checks are the same as the ones that g_win32_get_system_data_dirs_for_module()
2021 * does. Please keep them in sync.
2023 G_LOCK (g_utils_global);
2025 if (!g_system_data_dirs)
2027 gchar *data_dirs = (gchar *) g_getenv ("XDG_DATA_DIRS");
2030 if (!data_dirs || !data_dirs[0])
2031 data_dirs = "/usr/local/share/:/usr/share/";
2033 data_dir_vector = g_strsplit (data_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2035 if (!data_dirs || !data_dirs[0])
2036 data_dir_vector = g_strdupv ((gchar **) g_win32_get_system_data_dirs_for_module_real (NULL));
2038 data_dir_vector = g_strsplit (data_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2041 g_system_data_dirs = data_dir_vector;
2044 data_dir_vector = g_system_data_dirs;
2046 G_UNLOCK (g_utils_global);
2048 return (const gchar * const *) data_dir_vector;
2052 * g_get_system_config_dirs:
2054 * Returns an ordered list of base directories in which to access
2055 * system-wide configuration information.
2057 * On UNIX platforms this is determined using the mechanisms described
2059 * [XDG Base Directory Specification](http://www.freedesktop.org/Standards/basedir-spec).
2060 * In this case the list of directories retrieved will be `XDG_CONFIG_DIRS`.
2062 * On Windows it follows XDG Base Directory Specification if `XDG_CONFIG_DIRS` is defined.
2063 * If `XDG_CONFIG_DIRS` is undefined, the directory that contains application
2064 * data for all users is used instead. A typical path is
2065 * `C:\Documents and Settings\All Users\Application Data`.
2066 * This folder is used for application data
2067 * that is not user specific. For example, an application can store
2068 * a spell-check dictionary, a database of clip art, or a log file in the
2069 * CSIDL_COMMON_APPDATA folder. This information will not roam and is available
2070 * to anyone using the computer.
2072 * Returns: (array zero-terminated=1) (element-type filename) (transfer none):
2073 * a %NULL-terminated array of strings owned by GLib that must not be
2074 * modified or freed.
2078 const gchar * const *
2079 g_get_system_config_dirs (void)
2081 gchar **conf_dir_vector;
2083 G_LOCK (g_utils_global);
2085 if (!g_system_config_dirs)
2087 const gchar *conf_dirs = g_getenv ("XDG_CONFIG_DIRS");
2091 conf_dir_vector = g_strsplit (conf_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2095 gchar *special_conf_dirs = get_special_folder (CSIDL_COMMON_APPDATA);
2097 if (special_conf_dirs)
2098 conf_dir_vector = g_strsplit (special_conf_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2100 /* Return empty list */
2101 conf_dir_vector = g_strsplit ("", G_SEARCHPATH_SEPARATOR_S, 0);
2103 g_free (special_conf_dirs);
2106 if (!conf_dirs || !conf_dirs[0])
2107 conf_dirs = "/etc/xdg";
2109 conf_dir_vector = g_strsplit (conf_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2112 g_system_config_dirs = conf_dir_vector;
2115 conf_dir_vector = g_system_config_dirs;
2116 G_UNLOCK (g_utils_global);
2118 return (const gchar * const *) conf_dir_vector;
2122 * g_nullify_pointer:
2123 * @nullify_location: (not nullable): the memory address of the pointer.
2125 * Set the pointer at the specified location to %NULL.
2128 g_nullify_pointer (gpointer *nullify_location)
2130 g_return_if_fail (nullify_location != NULL);
2132 *nullify_location = NULL;
2135 #define KILOBYTE_FACTOR (G_GOFFSET_CONSTANT (1000))
2136 #define MEGABYTE_FACTOR (KILOBYTE_FACTOR * KILOBYTE_FACTOR)
2137 #define GIGABYTE_FACTOR (MEGABYTE_FACTOR * KILOBYTE_FACTOR)
2138 #define TERABYTE_FACTOR (GIGABYTE_FACTOR * KILOBYTE_FACTOR)
2139 #define PETABYTE_FACTOR (TERABYTE_FACTOR * KILOBYTE_FACTOR)
2140 #define EXABYTE_FACTOR (PETABYTE_FACTOR * KILOBYTE_FACTOR)
2142 #define KIBIBYTE_FACTOR (G_GOFFSET_CONSTANT (1024))
2143 #define MEBIBYTE_FACTOR (KIBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2144 #define GIBIBYTE_FACTOR (MEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2145 #define TEBIBYTE_FACTOR (GIBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2146 #define PEBIBYTE_FACTOR (TEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2147 #define EXBIBYTE_FACTOR (PEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2151 * @size: a size in bytes
2153 * Formats a size (for example the size of a file) into a human readable
2154 * string. Sizes are rounded to the nearest size prefix (kB, MB, GB)
2155 * and are displayed rounded to the nearest tenth. E.g. the file size
2156 * 3292528 bytes will be converted into the string "3.2 MB".
2158 * The prefix units base is 1000 (i.e. 1 kB is 1000 bytes).
2160 * This string should be freed with g_free() when not needed any longer.
2162 * See g_format_size_full() for more options about how the size might be
2165 * Returns: a newly-allocated formatted string containing a human readable
2171 g_format_size (guint64 size)
2173 return g_format_size_full (size, G_FORMAT_SIZE_DEFAULT);
2178 * @G_FORMAT_SIZE_DEFAULT: behave the same as g_format_size()
2179 * @G_FORMAT_SIZE_LONG_FORMAT: include the exact number of bytes as part
2180 * of the returned string. For example, "45.6 kB (45,612 bytes)".
2181 * @G_FORMAT_SIZE_IEC_UNITS: use IEC (base 1024) units with "KiB"-style
2182 * suffixes. IEC units should only be used for reporting things with
2183 * a strong "power of 2" basis, like RAM sizes or RAID stripe sizes.
2184 * Network and storage sizes should be reported in the normal SI units.
2185 * @G_FORMAT_SIZE_BITS: set the size as a quantity in bits, rather than
2186 * bytes, and return units in bits. For example, ‘Mb’ rather than ‘MB’.
2188 * Flags to modify the format of the string returned by g_format_size_full().
2191 #pragma GCC diagnostic push
2192 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
2195 * g_format_size_full:
2196 * @size: a size in bytes
2197 * @flags: #GFormatSizeFlags to modify the output
2201 * This function is similar to g_format_size() but allows for flags
2202 * that modify the output. See #GFormatSizeFlags.
2204 * Returns: a newly-allocated formatted string containing a human
2205 * readable file size
2210 g_format_size_full (guint64 size,
2211 GFormatSizeFlags flags)
2227 const struct Format formats[4][6] = {
2229 { KILOBYTE_FACTOR, N_("%.1f kB") },
2230 { MEGABYTE_FACTOR, N_("%.1f MB") },
2231 { GIGABYTE_FACTOR, N_("%.1f GB") },
2232 { TERABYTE_FACTOR, N_("%.1f TB") },
2233 { PETABYTE_FACTOR, N_("%.1f PB") },
2234 { EXABYTE_FACTOR, N_("%.1f EB") }
2237 { KIBIBYTE_FACTOR, N_("%.1f KiB") },
2238 { MEBIBYTE_FACTOR, N_("%.1f MiB") },
2239 { GIBIBYTE_FACTOR, N_("%.1f GiB") },
2240 { TEBIBYTE_FACTOR, N_("%.1f TiB") },
2241 { PEBIBYTE_FACTOR, N_("%.1f PiB") },
2242 { EXBIBYTE_FACTOR, N_("%.1f EiB") }
2245 { KILOBYTE_FACTOR, N_("%.1f kb") },
2246 { MEGABYTE_FACTOR, N_("%.1f Mb") },
2247 { GIGABYTE_FACTOR, N_("%.1f Gb") },
2248 { TERABYTE_FACTOR, N_("%.1f Tb") },
2249 { PETABYTE_FACTOR, N_("%.1f Pb") },
2250 { EXABYTE_FACTOR, N_("%.1f Eb") }
2253 { KIBIBYTE_FACTOR, N_("%.1f Kib") },
2254 { MEBIBYTE_FACTOR, N_("%.1f Mib") },
2255 { GIBIBYTE_FACTOR, N_("%.1f Gib") },
2256 { TEBIBYTE_FACTOR, N_("%.1f Tib") },
2257 { PEBIBYTE_FACTOR, N_("%.1f Pib") },
2258 { EXBIBYTE_FACTOR, N_("%.1f Eib") }
2265 string = g_string_new (NULL);
2267 switch (flags & ~G_FORMAT_SIZE_LONG_FORMAT)
2269 case G_FORMAT_SIZE_DEFAULT:
2270 index = FORMAT_BYTES;
2272 case (G_FORMAT_SIZE_DEFAULT | G_FORMAT_SIZE_IEC_UNITS):
2273 index = FORMAT_BYTES_IEC;
2275 case G_FORMAT_SIZE_BITS:
2276 index = FORMAT_BITS;
2278 case (G_FORMAT_SIZE_BITS | G_FORMAT_SIZE_IEC_UNITS):
2279 index = FORMAT_BITS_IEC;
2282 g_assert_not_reached ();
2286 if (size < formats[index][0].factor)
2288 const char * format;
2290 if (index == FORMAT_BYTES || index == FORMAT_BYTES_IEC)
2292 format = g_dngettext (GETTEXT_PACKAGE, "%u byte", "%u bytes", (guint) size);
2296 format = g_dngettext (GETTEXT_PACKAGE, "%u bit", "%u bits", (guint) size);
2299 g_string_printf (string, format, (guint) size);
2301 flags &= ~G_FORMAT_SIZE_LONG_FORMAT;
2305 const gsize n = G_N_ELEMENTS (formats[index]);
2309 * Point the last format (the highest unit) by default
2310 * and then then scan all formats, starting with the 2nd one
2311 * because the 1st is already managed by with the plural form
2313 const struct Format * f = &formats[index][n - 1];
2315 for (i = 1; i < n; i++)
2317 if (size < formats[index][i].factor)
2319 f = &formats[index][i - 1];
2324 g_string_printf (string, _(f->string), (gdouble) size / (gdouble) f->factor);
2327 if (flags & G_FORMAT_SIZE_LONG_FORMAT)
2329 /* First problem: we need to use the number of bytes to decide on
2330 * the plural form that is used for display, but the number of
2331 * bytes potentially exceeds the size of a guint (which is what
2332 * ngettext() takes).
2334 * From a pragmatic standpoint, it seems that all known languages
2335 * base plural forms on one or both of the following:
2337 * - the lowest digits of the number
2339 * - if the number if greater than some small value
2341 * Here's how we fake it: Draw an arbitrary line at one thousand.
2342 * If the number is below that, then fine. If it is above it,
2343 * then we take the modulus of the number by one thousand (in
2344 * order to keep the lowest digits) and add one thousand to that
2345 * (in order to ensure that 1001 is not treated the same as 1).
2347 guint plural_form = size < 1000 ? size : size % 1000 + 1000;
2349 /* Second problem: we need to translate the string "%u byte/bit" and
2350 * "%u bytes/bits" for pluralisation, but the correct number format to
2351 * use for a gsize is different depending on which architecture
2354 * Solution: format the number separately and use "%s bytes/bits" on
2357 const gchar *translated_format;
2358 gchar *formatted_number;
2360 if (index == FORMAT_BYTES || index == FORMAT_BYTES_IEC)
2362 /* Translators: the %s in "%s bytes" will always be replaced by a number. */
2363 translated_format = g_dngettext (GETTEXT_PACKAGE, "%s byte", "%s bytes", plural_form);
2367 /* Translators: the %s in "%s bits" will always be replaced by a number. */
2368 translated_format = g_dngettext (GETTEXT_PACKAGE, "%s bit", "%s bits", plural_form);
2370 /* XXX: Windows doesn't support the "'" format modifier, so we
2371 * must not use it there. Instead, just display the number
2372 * without separation. Bug #655336 is open until a solution is
2376 formatted_number = g_strdup_printf ("%'"G_GUINT64_FORMAT, size);
2378 formatted_number = g_strdup_printf ("%"G_GUINT64_FORMAT, size);
2381 g_string_append (string, " (");
2382 g_string_append_printf (string, translated_format, formatted_number);
2383 g_free (formatted_number);
2384 g_string_append (string, ")");
2387 return g_string_free (string, FALSE);
2390 #pragma GCC diagnostic pop
2393 * g_format_size_for_display:
2394 * @size: a size in bytes
2396 * Formats a size (for example the size of a file) into a human
2397 * readable string. Sizes are rounded to the nearest size prefix
2398 * (KB, MB, GB) and are displayed rounded to the nearest tenth.
2399 * E.g. the file size 3292528 bytes will be converted into the
2402 * The prefix units base is 1024 (i.e. 1 KB is 1024 bytes).
2404 * This string should be freed with g_free() when not needed any longer.
2406 * Returns: a newly-allocated formatted string containing a human
2407 * readable file size
2411 * Deprecated:2.30: This function is broken due to its use of SI
2412 * suffixes to denote IEC units. Use g_format_size() instead.
2415 g_format_size_for_display (goffset size)
2417 if (size < (goffset) KIBIBYTE_FACTOR)
2418 return g_strdup_printf (g_dngettext(GETTEXT_PACKAGE, "%u byte", "%u bytes",(guint) size), (guint) size);
2421 gdouble displayed_size;
2423 if (size < (goffset) MEBIBYTE_FACTOR)
2425 displayed_size = (gdouble) size / (gdouble) KIBIBYTE_FACTOR;
2426 /* Translators: this is from the deprecated function g_format_size_for_display() which uses 'KB' to
2427 * mean 1024 bytes. I am aware that 'KB' is not correct, but it has been preserved for reasons of
2428 * compatibility. Users will not see this string unless a program is using this deprecated function.
2429 * Please translate as literally as possible.
2431 return g_strdup_printf (_("%.1f KB"), displayed_size);
2433 else if (size < (goffset) GIBIBYTE_FACTOR)
2435 displayed_size = (gdouble) size / (gdouble) MEBIBYTE_FACTOR;
2436 return g_strdup_printf (_("%.1f MB"), displayed_size);
2438 else if (size < (goffset) TEBIBYTE_FACTOR)
2440 displayed_size = (gdouble) size / (gdouble) GIBIBYTE_FACTOR;
2441 return g_strdup_printf (_("%.1f GB"), displayed_size);
2443 else if (size < (goffset) PEBIBYTE_FACTOR)
2445 displayed_size = (gdouble) size / (gdouble) TEBIBYTE_FACTOR;
2446 return g_strdup_printf (_("%.1f TB"), displayed_size);
2448 else if (size < (goffset) EXBIBYTE_FACTOR)
2450 displayed_size = (gdouble) size / (gdouble) PEBIBYTE_FACTOR;
2451 return g_strdup_printf (_("%.1f PB"), displayed_size);
2455 displayed_size = (gdouble) size / (gdouble) EXBIBYTE_FACTOR;
2456 return g_strdup_printf (_("%.1f EB"), displayed_size);
2461 #if defined (G_OS_WIN32) && !defined (_WIN64)
2463 /* Binary compatibility versions. Not for newly compiled code. */
2465 _GLIB_EXTERN const gchar *g_get_user_name_utf8 (void);
2466 _GLIB_EXTERN const gchar *g_get_real_name_utf8 (void);
2467 _GLIB_EXTERN const gchar *g_get_home_dir_utf8 (void);
2468 _GLIB_EXTERN const gchar *g_get_tmp_dir_utf8 (void);
2469 _GLIB_EXTERN gchar *g_find_program_in_path_utf8 (const gchar *program);
2472 g_find_program_in_path_utf8 (const gchar *program)
2474 return g_find_program_in_path (program);
2477 const gchar *g_get_user_name_utf8 (void) { return g_get_user_name (); }
2478 const gchar *g_get_real_name_utf8 (void) { return g_get_real_name (); }
2479 const gchar *g_get_home_dir_utf8 (void) { return g_get_home_dir (); }
2480 const gchar *g_get_tmp_dir_utf8 (void) { return g_get_tmp_dir (); }
2486 * Returns %TRUE if the current process was executed as setuid (or an
2487 * equivalent __libc_enable_secure is available). See:
2488 * http://osdir.com/ml/linux.lfs.hardened/2007-04/msg00032.html
2491 g_check_setuid (void)
2493 /* TODO: get __libc_enable_secure exported from glibc.
2494 * See http://www.openwall.com/lists/owl-dev/2012/08/14/1
2496 #if 0 && defined(HAVE_LIBC_ENABLE_SECURE)
2498 /* See glibc/include/unistd.h */
2499 extern int __libc_enable_secure;
2500 return __libc_enable_secure;
2502 #elif defined(HAVE_ISSETUGID) && !defined(__BIONIC__)
2503 /* BSD: http://www.freebsd.org/cgi/man.cgi?query=issetugid&sektion=2 */
2505 /* Android had it in older versions but the new 64 bit ABI does not
2506 * have it anymore, and some versions of the 32 bit ABI neither.
2507 * https://code.google.com/p/android-developer-preview/issues/detail?id=168
2509 return issetugid ();
2510 #elif defined(G_OS_UNIX)
2511 uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
2512 gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
2514 static gsize check_setuid_initialised;
2515 static gboolean is_setuid;
2517 if (g_once_init_enter (&check_setuid_initialised))
2519 #ifdef HAVE_GETRESUID
2520 /* These aren't in the header files, so we prototype them here.
2522 int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
2523 int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
2525 if (getresuid (&ruid, &euid, &suid) != 0 ||
2526 getresgid (&rgid, &egid, &sgid) != 0)
2527 #endif /* HAVE_GETRESUID */
2529 suid = ruid = getuid ();
2530 sgid = rgid = getgid ();
2535 is_setuid = (ruid != euid || ruid != suid ||
2536 rgid != egid || rgid != sgid);
2538 g_once_init_leave (&check_setuid_initialised, 1);
2550 * A wrapper for the POSIX abort() function.
2552 * On Windows it is a function that makes extra effort (including a call
2553 * to abort()) to ensure that a debugger-catchable exception is thrown
2554 * before the program terminates.
2556 * See your C library manual for more details about abort().
2563 /* One call to break the debugger */
2565 /* One call in case CRT does get saner about abort() behaviour */
2567 /* And one call to bind them all and terminate the program for sure */