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 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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GLib Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GLib Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GLib at ftp://ftp.gtk.org/pub/gtk/.
28 * MT safe for the unix part, FIXME: make the win32 part MT safe as well.
41 #include <ctype.h> /* For tolower() */
43 #include <sys/types.h>
48 #include <sys/types.h>
49 #ifdef HAVE_SYS_PARAM_H
50 #include <sys/param.h>
52 #ifdef HAVE_CRT_EXTERNS_H
53 #include <crt_externs.h> /* for _NSGetEnviron */
56 /* implement gutils's inline functions
58 #define G_IMPLEMENT_INLINES 1
62 #include "glib-init.h"
64 #include "gfileutils.h"
68 #include "gprintfint.h"
70 #include "gthreadprivate.h"
71 #include "gtestutils.h"
73 #include "gstrfuncs.h"
77 #ifdef G_PLATFORM_WIN32
86 * @title: Miscellaneous Utility Functions
87 * @short_description: a selection of portable utility functions
89 * These are portable utility functions.
92 #ifdef G_PLATFORM_WIN32
94 # ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
95 # define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 2
96 # define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 4
98 # include <lmcons.h> /* For UNLEN */
99 #endif /* G_PLATFORM_WIN32 */
104 /* older SDK (e.g. msvc 5.0) does not have these*/
105 # ifndef CSIDL_MYMUSIC
106 # define CSIDL_MYMUSIC 13
108 # ifndef CSIDL_MYVIDEO
109 # define CSIDL_MYVIDEO 14
111 # ifndef CSIDL_INTERNET_CACHE
112 # define CSIDL_INTERNET_CACHE 32
114 # ifndef CSIDL_COMMON_APPDATA
115 # define CSIDL_COMMON_APPDATA 35
117 # ifndef CSIDL_MYPICTURES
118 # define CSIDL_MYPICTURES 0x27
120 # ifndef CSIDL_COMMON_DOCUMENTS
121 # define CSIDL_COMMON_DOCUMENTS 46
123 # ifndef CSIDL_PROFILE
124 # define CSIDL_PROFILE 40
126 # include <process.h>
130 #include <CoreServices/CoreServices.h>
134 #include <langinfo.h>
137 #ifdef G_PLATFORM_WIN32
140 _glib_get_dll_directory (void)
144 wchar_t wc_fn[MAX_PATH];
147 if (glib_dll == NULL)
151 /* This code is different from that in
152 * g_win32_get_package_installation_directory_of_module() in that
153 * here we return the actual folder where the GLib DLL is. We don't
154 * do the check for it being in a "bin" or "lib" subfolder and then
155 * returning the parent of that.
157 * In a statically built GLib, glib_dll will be NULL and we will
158 * thus look up the application's .exe file's location.
160 if (!GetModuleFileNameW (glib_dll, wc_fn, MAX_PATH))
163 retval = g_utf16_to_utf8 (wc_fn, -1, NULL, NULL, NULL);
165 p = strrchr (retval, G_DIR_SEPARATOR);
178 #if !defined (HAVE_MEMMOVE) && !defined (HAVE_WORKING_BCOPY)
181 * @dest: the destination address to copy the bytes to.
182 * @src: the source address to copy the bytes from.
183 * @len: the number of bytes to copy.
185 * Copies a block of memory @len bytes long, from @src to @dest.
186 * The source and destination areas may overlap.
188 * In order to use this function, you must include
189 * <filename>string.h</filename> yourself, because this macro will
190 * typically simply resolve to memmove() and GLib does not include
191 * <filename>string.h</filename> for you.
194 g_memmove (gpointer dest,
198 gchar* destptr = dest;
199 const gchar* srcptr = src;
200 if (src + len < dest || dest + len < src)
202 bcopy (src, dest, len);
205 else if (dest <= src)
208 *(destptr++) = *(srcptr++);
215 *(--destptr) = *(--srcptr);
218 #endif /* !HAVE_MEMMOVE && !HAVE_WORKING_BCOPY */
226 * @func: (scope async): the function to call on normal program termination.
228 * Specifies a function to be called at normal program termination.
230 * Since GLib 2.8.2, on Windows g_atexit() actually is a preprocessor
231 * macro that maps to a call to the atexit() function in the C
232 * library. This means that in case the code that calls g_atexit(),
233 * i.e. atexit(), is in a DLL, the function will be called when the
234 * DLL is detached from the program. This typically makes more sense
235 * than that the function is called when the GLib DLL is detached,
236 * which happened earlier when g_atexit() was a function in the GLib
239 * The behaviour of atexit() in the context of dynamically loaded
240 * modules is not formally specified and varies wildly.
242 * On POSIX systems, calling g_atexit() (or atexit()) in a dynamically
243 * loaded module which is unloaded before the program terminates might
244 * well cause a crash at program exit.
246 * Some POSIX systems implement atexit() like Windows, and have each
247 * dynamically loaded module maintain an own atexit chain that is
248 * called when the module is unloaded.
250 * On other POSIX systems, before a dynamically loaded module is
251 * unloaded, the registered atexit functions (if any) residing in that
252 * module are called, regardless where the code that registered them
253 * resided. This is presumably the most robust approach.
255 * As can be seen from the above, for portability it's best to avoid
256 * calling g_atexit() (or atexit()) except in the main executable of a
260 g_atexit (GVoidFunc func)
263 const gchar *error = NULL;
265 /* keep this in sync with glib.h */
267 #ifdef G_NATIVE_ATEXIT
268 result = ATEXIT (func);
270 error = g_strerror (errno);
271 #elif defined (HAVE_ATEXIT)
272 # ifdef NeXT /* @#%@! NeXTStep */
273 result = !atexit ((void (*)(void)) func);
275 error = g_strerror (errno);
277 result = atexit ((void (*)(void)) func);
279 error = g_strerror (errno);
281 #elif defined (HAVE_ON_EXIT)
282 result = on_exit ((void (*)(int, void *)) func, NULL);
284 error = g_strerror (errno);
287 error = "no implementation";
288 #endif /* G_NATIVE_ATEXIT */
291 g_error ("Could not register atexit() function: %s", error);
294 /* Based on execvp() from GNU Libc.
295 * Some of this code is cut-and-pasted into gspawn.c
299 my_strchrnul (const gchar *str,
302 gchar *p = (gchar*)str;
303 while (*p && (*p != c))
311 static gchar *inner_find_program_in_path (const gchar *program);
314 g_find_program_in_path (const gchar *program)
316 const gchar *last_dot = strrchr (program, '.');
318 if (last_dot == NULL ||
319 strchr (last_dot, '\\') != NULL ||
320 strchr (last_dot, '/') != NULL)
322 const gint program_length = strlen (program);
323 gchar *pathext = g_build_path (";",
324 ".exe;.cmd;.bat;.com",
325 g_getenv ("PATHEXT"),
328 gchar *decorated_program;
334 gchar *q = my_strchrnul (p, ';');
336 decorated_program = g_malloc (program_length + (q-p) + 1);
337 memcpy (decorated_program, program, program_length);
338 memcpy (decorated_program+program_length, p, q-p);
339 decorated_program [program_length + (q-p)] = '\0';
341 retval = inner_find_program_in_path (decorated_program);
342 g_free (decorated_program);
350 } while (*p++ != '\0');
355 return inner_find_program_in_path (program);
361 * g_find_program_in_path:
362 * @program: a program name in the GLib file name encoding
364 * Locates the first executable named @program in the user's path, in the
365 * same way that execvp() would locate it. Returns an allocated string
366 * with the absolute path name, or %NULL if the program is not found in
367 * the path. If @program is already an absolute path, returns a copy of
368 * @program if @program exists and is executable, and %NULL otherwise.
370 * On Windows, if @program does not have a file type suffix, tries
371 * with the suffixes .exe, .cmd, .bat and .com, and the suffixes in
372 * the <envar>PATHEXT</envar> environment variable.
374 * On Windows, it looks for the file in the same way as CreateProcess()
375 * would. This means first in the directory where the executing
376 * program was loaded from, then in the current directory, then in the
377 * Windows 32-bit system directory, then in the Windows directory, and
378 * finally in the directories in the <envar>PATH</envar> environment
379 * variable. If the program is found, the return value contains the
380 * full name including the type suffix.
382 * Return value: absolute path, or %NULL
386 inner_find_program_in_path (const gchar *program)
389 g_find_program_in_path (const gchar *program)
392 const gchar *path, *p;
393 gchar *name, *freeme;
395 const gchar *path_copy;
396 gchar *filename = NULL, *appdir = NULL;
397 gchar *sysdir = NULL, *windir = NULL;
399 wchar_t wfilename[MAXPATHLEN], wsysdir[MAXPATHLEN],
405 g_return_val_if_fail (program != NULL, NULL);
407 /* If it is an absolute path, or a relative path including subdirectories,
408 * don't look in PATH.
410 if (g_path_is_absolute (program)
411 || strchr (program, G_DIR_SEPARATOR) != NULL
413 || strchr (program, '/') != NULL
417 if (g_file_test (program, G_FILE_TEST_IS_EXECUTABLE) &&
418 !g_file_test (program, G_FILE_TEST_IS_DIR))
419 return g_strdup (program);
424 path = g_getenv ("PATH");
425 #if defined(G_OS_UNIX) || defined(G_OS_BEOS)
428 /* There is no `PATH' in the environment. The default
429 * search path in GNU libc is the current directory followed by
430 * the path `confstr' returns for `_CS_PATH'.
433 /* In GLib we put . last, for security, and don't use the
434 * unportable confstr(); UNIX98 does not actually specify
435 * what to search if PATH is unset. POSIX may, dunno.
438 path = "/bin:/usr/bin:.";
441 n = GetModuleFileNameW (NULL, wfilename, MAXPATHLEN);
442 if (n > 0 && n < MAXPATHLEN)
443 filename = g_utf16_to_utf8 (wfilename, -1, NULL, NULL, NULL);
445 n = GetSystemDirectoryW (wsysdir, MAXPATHLEN);
446 if (n > 0 && n < MAXPATHLEN)
447 sysdir = g_utf16_to_utf8 (wsysdir, -1, NULL, NULL, NULL);
449 n = GetWindowsDirectoryW (wwindir, MAXPATHLEN);
450 if (n > 0 && n < MAXPATHLEN)
451 windir = g_utf16_to_utf8 (wwindir, -1, NULL, NULL, NULL);
455 appdir = g_path_get_dirname (filename);
459 path = g_strdup (path);
463 const gchar *tem = path;
464 path = g_strconcat (windir, ";", path, NULL);
465 g_free ((gchar *) tem);
471 const gchar *tem = path;
472 path = g_strconcat (sysdir, ";", path, NULL);
473 g_free ((gchar *) tem);
478 const gchar *tem = path;
479 path = g_strconcat (".;", path, NULL);
480 g_free ((gchar *) tem);
485 const gchar *tem = path;
486 path = g_strconcat (appdir, ";", path, NULL);
487 g_free ((gchar *) tem);
494 len = strlen (program) + 1;
495 pathlen = strlen (path);
496 freeme = name = g_malloc (pathlen + len + 1);
498 /* Copy the file name at the top, including '\0' */
499 memcpy (name + pathlen + 1, program, len);
500 name = name + pathlen;
501 /* And add the slash before the filename */
502 *name = G_DIR_SEPARATOR;
510 p = my_strchrnul (path, G_SEARCHPATH_SEPARATOR);
513 /* Two adjacent colons, or a colon at the beginning or the end
514 * of `PATH' means to search the current directory.
518 startp = memcpy (name - (p - path), path, p - path);
520 if (g_file_test (startp, G_FILE_TEST_IS_EXECUTABLE) &&
521 !g_file_test (startp, G_FILE_TEST_IS_DIR))
524 ret = g_strdup (startp);
527 g_free ((gchar *) path_copy);
532 while (*p++ != '\0');
536 g_free ((gchar *) path_copy);
544 * @mask: a #gulong containing flags
545 * @nth_bit: the index of the bit to start the search from
547 * Find the position of the first bit set in @mask, searching
548 * from (but not including) @nth_bit upwards. Bits are numbered
549 * from 0 (least significant) to sizeof(#gulong) * 8 - 1 (31 or 63,
550 * usually). To start searching from the 0th bit, set @nth_bit to -1.
552 * Returns: the index of the first bit set which is higher than @nth_bit
557 * @mask: a #gulong containing flags
558 * @nth_bit: the index of the bit to start the search from
560 * Find the position of the first bit set in @mask, searching
561 * from (but not including) @nth_bit downwards. Bits are numbered
562 * from 0 (least significant) to sizeof(#gulong) * 8 - 1 (31 or 63,
563 * usually). To start searching from the last bit, set @nth_bit to
564 * -1 or GLIB_SIZEOF_LONG * 8.
566 * Returns: the index of the first bit set which is lower than @nth_bit
573 * Gets the number of bits used to hold @number,
574 * e.g. if @number is 4, 3 bits are needed.
576 * Returns: the number of bits used to hold @number
579 G_LOCK_DEFINE_STATIC (g_utils_global);
581 static gchar *g_tmp_dir = NULL;
582 static gchar *g_user_name = NULL;
583 static gchar *g_real_name = NULL;
584 static gchar *g_home_dir = NULL;
585 static gchar *g_host_name = NULL;
588 /* System codepage versions of the above, kept at file level so that they,
589 * too, are produced only once.
591 static gchar *g_tmp_dir_cp = NULL;
592 static gchar *g_user_name_cp = NULL;
593 static gchar *g_real_name_cp = NULL;
594 static gchar *g_home_dir_cp = NULL;
597 static gchar *g_user_data_dir = NULL;
598 static gchar **g_system_data_dirs = NULL;
599 static gchar *g_user_cache_dir = NULL;
600 static gchar *g_user_config_dir = NULL;
601 static gchar **g_system_config_dirs = NULL;
603 static gchar **g_user_special_dirs = NULL;
605 /* fifteen minutes of fame for everybody */
606 #define G_USER_DIRS_EXPIRE 15 * 60
611 get_special_folder (int csidl)
613 wchar_t path[MAX_PATH+1];
615 LPITEMIDLIST pidl = NULL;
617 gchar *retval = NULL;
619 hr = SHGetSpecialFolderLocation (NULL, csidl, &pidl);
622 b = SHGetPathFromIDListW (pidl, path);
624 retval = g_utf16_to_utf8 (path, -1, NULL, NULL, NULL);
625 CoTaskMemFree (pidl);
631 get_windows_directory_root (void)
633 wchar_t wwindowsdir[MAX_PATH];
635 if (GetWindowsDirectoryW (wwindowsdir, G_N_ELEMENTS (wwindowsdir)))
637 /* Usually X:\Windows, but in terminal server environments
638 * might be an UNC path, AFAIK.
640 char *windowsdir = g_utf16_to_utf8 (wwindowsdir, -1, NULL, NULL, NULL);
643 if (windowsdir == NULL)
644 return g_strdup ("C:\\");
646 p = (char *) g_path_skip_root (windowsdir);
647 if (G_IS_DIR_SEPARATOR (p[-1]) && p[-2] != ':')
653 return g_strdup ("C:\\");
658 /* HOLDS: g_utils_global_lock */
660 g_get_any_init_do (void)
664 g_tmp_dir = g_strdup (g_getenv ("TMPDIR"));
665 if (g_tmp_dir == NULL || *g_tmp_dir == '\0')
666 g_tmp_dir = g_strdup (g_getenv ("TMP"));
667 if (g_tmp_dir == NULL || *g_tmp_dir == '\0')
668 g_tmp_dir = g_strdup (g_getenv ("TEMP"));
671 if (g_tmp_dir == NULL || *g_tmp_dir == '\0')
672 g_tmp_dir = get_windows_directory_root ();
675 if (g_tmp_dir == NULL || *g_tmp_dir == '\0')
678 g_tmp_dir = g_strdup (P_tmpdir);
679 k = strlen (g_tmp_dir);
680 if (k > 1 && G_IS_DIR_SEPARATOR (g_tmp_dir[k - 1]))
681 g_tmp_dir[k - 1] = '\0';
685 if (g_tmp_dir == NULL || *g_tmp_dir == '\0')
687 g_tmp_dir = g_strdup ("/tmp");
689 #endif /* !G_OS_WIN32 */
692 /* We check $HOME first for Win32, though it is a last resort for Unix
693 * where we prefer the results of getpwuid().
695 g_home_dir = g_strdup (g_getenv ("HOME"));
697 /* Only believe HOME if it is an absolute path and exists */
700 if (!(g_path_is_absolute (g_home_dir) &&
701 g_file_test (g_home_dir, G_FILE_TEST_IS_DIR)))
708 /* In case HOME is Unix-style (it happens), convert it to
714 while ((p = strchr (g_home_dir, '/')) != NULL)
720 /* USERPROFILE is probably the closest equivalent to $HOME? */
721 if (g_getenv ("USERPROFILE") != NULL)
722 g_home_dir = g_strdup (g_getenv ("USERPROFILE"));
726 g_home_dir = get_special_folder (CSIDL_PROFILE);
729 g_home_dir = get_windows_directory_root ();
730 #endif /* G_OS_WIN32 */
734 struct passwd *pw = NULL;
735 gpointer buffer = NULL;
739 # if defined (HAVE_POSIX_GETPWUID_R) || defined (HAVE_NONPOSIX_GETPWUID_R)
741 # ifdef _SC_GETPW_R_SIZE_MAX
742 /* This reurns the maximum length */
743 glong bufsize = sysconf (_SC_GETPW_R_SIZE_MAX);
747 # else /* _SC_GETPW_R_SIZE_MAX */
749 # endif /* _SC_GETPW_R_SIZE_MAX */
751 logname = (gchar *) g_getenv ("LOGNAME");
756 /* we allocate 6 extra bytes to work around a bug in
757 * Mac OS < 10.3. See #156446
759 buffer = g_malloc (bufsize + 6);
762 # ifdef HAVE_POSIX_GETPWUID_R
764 error = getpwnam_r (logname, &pwd, buffer, bufsize, &pw);
765 if (!pw || (pw->pw_uid != getuid ())) {
766 /* LOGNAME is lying, fall back to looking up the uid */
767 error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
770 error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
772 error = error < 0 ? errno : error;
773 # else /* HAVE_NONPOSIX_GETPWUID_R */
774 /* HPUX 11 falls into the HAVE_POSIX_GETPWUID_R case */
775 # if defined(_AIX) || defined(__hpux)
776 error = getpwuid_r (getuid (), &pwd, buffer, bufsize);
777 pw = error == 0 ? &pwd : NULL;
780 pw = getpwnam_r (logname, &pwd, buffer, bufsize);
781 if (!pw || (pw->pw_uid != getuid ())) {
782 /* LOGNAME is lying, fall back to looking up the uid */
783 pw = getpwuid_r (getuid (), &pwd, buffer, bufsize);
786 pw = getpwuid_r (getuid (), &pwd, buffer, bufsize);
788 error = pw ? 0 : errno;
790 # endif /* HAVE_NONPOSIX_GETPWUID_R */
794 /* we bail out prematurely if the user id can't be found
795 * (should be pretty rare case actually), or if the buffer
796 * should be sufficiently big and lookups are still not
799 if (error == 0 || error == ENOENT)
801 g_warning ("getpwuid_r(): failed due to unknown user id (%lu)",
805 if (bufsize > 32 * 1024)
807 g_warning ("getpwuid_r(): failed due to: %s.",
816 # endif /* HAVE_POSIX_GETPWUID_R || HAVE_NONPOSIX_GETPWUID_R */
821 pw = getpwuid (getuid ());
826 g_user_name = g_strdup (pw->pw_name);
828 if (pw->pw_gecos && *pw->pw_gecos != '\0')
830 gchar **gecos_fields;
833 /* split the gecos field and substitute '&' */
834 gecos_fields = g_strsplit (pw->pw_gecos, ",", 0);
835 name_parts = g_strsplit (gecos_fields[0], "&", 0);
836 pw->pw_name[0] = g_ascii_toupper (pw->pw_name[0]);
837 g_real_name = g_strjoinv (pw->pw_name, name_parts);
838 g_strfreev (gecos_fields);
839 g_strfreev (name_parts);
843 g_home_dir = g_strdup (pw->pw_dir);
848 #else /* !HAVE_PWD_H */
853 wchar_t buffer[UNLEN+1];
855 if (GetUserNameW (buffer, (LPDWORD) &len))
857 g_user_name = g_utf16_to_utf8 (buffer, -1, NULL, NULL, NULL);
858 g_real_name = g_strdup (g_user_name);
861 #endif /* G_OS_WIN32 */
863 #endif /* !HAVE_PWD_H */
867 g_home_dir = g_strdup (g_getenv ("HOME"));
871 /* change '\\' in %HOME% to '/' */
872 g_strdelimit (g_home_dir, "\\",'/');
875 g_user_name = g_strdup ("somebody");
877 g_real_name = g_strdup ("Unknown");
881 gboolean hostname_fail = (gethostname (hostname, sizeof (hostname)) == -1);
883 DWORD size = sizeof (hostname);
884 gboolean hostname_fail = (!GetComputerName (hostname, &size));
886 g_host_name = g_strdup (hostname_fail ? "localhost" : hostname);
890 g_tmp_dir_cp = g_locale_from_utf8 (g_tmp_dir, -1, NULL, NULL, NULL);
891 g_user_name_cp = g_locale_from_utf8 (g_user_name, -1, NULL, NULL, NULL);
892 g_real_name_cp = g_locale_from_utf8 (g_real_name, -1, NULL, NULL, NULL);
895 g_tmp_dir_cp = g_strdup ("\\");
897 g_user_name_cp = g_strdup ("somebody");
899 g_real_name_cp = g_strdup ("Unknown");
901 /* home_dir might be NULL, unlike tmp_dir, user_name and
905 g_home_dir_cp = g_locale_from_utf8 (g_home_dir, -1, NULL, NULL, NULL);
907 g_home_dir_cp = NULL;
908 #endif /* G_OS_WIN32 */
912 g_get_any_init (void)
915 g_get_any_init_do ();
919 g_get_any_init_locked (void)
921 G_LOCK (g_utils_global);
923 G_UNLOCK (g_utils_global);
930 * Gets the user name of the current user. The encoding of the returned
931 * string is system-defined. On UNIX, it might be the preferred file name
932 * encoding, or something else, and there is no guarantee that it is even
933 * consistent on a machine. On Windows, it is always UTF-8.
935 * Returns: the user name of the current user.
938 g_get_user_name (void)
940 g_get_any_init_locked ();
947 * Gets the real name of the user. This usually comes from the user's entry
948 * in the <filename>passwd</filename> file. The encoding of the returned
949 * string is system-defined. (On Windows, it is, however, always UTF-8.)
950 * If the real user name cannot be determined, the string "Unknown" is
953 * Returns: the user's real name.
956 g_get_real_name (void)
958 g_get_any_init_locked ();
965 * Gets the current user's home directory as defined in the
968 * Note that in contrast to traditional UNIX tools, this function
969 * prefers <filename>passwd</filename> entries over the <envar>HOME</envar>
970 * environment variable.
972 * One of the reasons for this decision is that applications in many
973 * cases need special handling to deal with the case where
974 * <envar>HOME</envar> is
976 * <member>Not owned by the user</member>
977 * <member>Not writeable</member>
978 * <member>Not even readable</member>
980 * Since applications are in general <emphasis>not</emphasis> written
981 * to deal with these situations it was considered better to make
982 * g_get_home_dir() not pay attention to <envar>HOME</envar> and to
983 * return the real home directory for the user. If applications
984 * want to pay attention to <envar>HOME</envar>, they can do:
986 * const char *homedir = g_getenv ("HOME");
988 * homedir = g_get_home_dir (<!-- -->);
991 * Returns: the current user's home directory
994 g_get_home_dir (void)
996 g_get_any_init_locked ();
1003 * Gets the directory to use for temporary files. This is found from
1004 * inspecting the environment variables <envar>TMPDIR</envar>,
1005 * <envar>TMP</envar>, and <envar>TEMP</envar> in that order. If none
1006 * of those are defined "/tmp" is returned on UNIX and "C:\" on Windows.
1007 * The encoding of the returned string is system-defined. On Windows,
1008 * it is always UTF-8. The return value is never %NULL or the empty string.
1010 * Returns: the directory to use for temporary files.
1013 g_get_tmp_dir (void)
1015 g_get_any_init_locked ();
1022 * Return a name for the machine.
1024 * The returned name is not necessarily a fully-qualified domain name,
1025 * or even present in DNS or some other name service at all. It need
1026 * not even be unique on your local network or site, but usually it
1027 * is. Callers should not rely on the return value having any specific
1028 * properties like uniqueness for security purposes. Even if the name
1029 * of the machine is changed while an application is running, the
1030 * return value from this function does not change. The returned
1031 * string is owned by GLib and should not be modified or freed. If no
1032 * name can be determined, a default fixed string "localhost" is
1035 * Returns: the host name of the machine.
1040 g_get_host_name (void)
1042 g_get_any_init_locked ();
1046 G_LOCK_DEFINE_STATIC (g_prgname);
1047 static gchar *g_prgname = NULL;
1052 * Gets the name of the program. This name should <emphasis>not</emphasis>
1053 * be localized, contrast with g_get_application_name().
1054 * (If you are using GDK or GTK+ the program name is set in gdk_init(),
1055 * which is called by gtk_init(). The program name is found by taking
1056 * the last component of <literal>argv[0]</literal>.)
1058 * Returns: the name of the program. The returned string belongs
1059 * to GLib and must not be modified or freed.
1062 g_get_prgname (void)
1068 if (g_prgname == NULL)
1070 static gboolean beenhere = FALSE;
1074 gchar *utf8_buf = NULL;
1075 wchar_t buf[MAX_PATH+1];
1078 if (GetModuleFileNameW (GetModuleHandle (NULL),
1079 buf, G_N_ELEMENTS (buf)) > 0)
1080 utf8_buf = g_utf16_to_utf8 (buf, -1, NULL, NULL, NULL);
1084 g_prgname = g_path_get_basename (utf8_buf);
1091 G_UNLOCK (g_prgname);
1098 * @prgname: the name of the program.
1100 * Sets the name of the program. This name should <emphasis>not</emphasis>
1101 * be localized, contrast with g_set_application_name(). Note that for
1102 * thread-safety reasons this function can only be called once.
1105 g_set_prgname (const gchar *prgname)
1109 g_prgname = g_strdup (prgname);
1110 G_UNLOCK (g_prgname);
1113 G_LOCK_DEFINE_STATIC (g_application_name);
1114 static gchar *g_application_name = NULL;
1117 * g_get_application_name:
1119 * Gets a human-readable name for the application, as set by
1120 * g_set_application_name(). This name should be localized if
1121 * possible, and is intended for display to the user. Contrast with
1122 * g_get_prgname(), which gets a non-localized name. If
1123 * g_set_application_name() has not been called, returns the result of
1124 * g_get_prgname() (which may be %NULL if g_set_prgname() has also not
1127 * Return value: human-readable application name. may return %NULL
1132 g_get_application_name (void)
1136 G_LOCK (g_application_name);
1137 retval = g_application_name;
1138 G_UNLOCK (g_application_name);
1141 return g_get_prgname ();
1147 * g_set_application_name:
1148 * @application_name: localized name of the application
1150 * Sets a human-readable name for the application. This name should be
1151 * localized if possible, and is intended for display to the user.
1152 * Contrast with g_set_prgname(), which sets a non-localized name.
1153 * g_set_prgname() will be called automatically by gtk_init(),
1154 * but g_set_application_name() will not.
1156 * Note that for thread safety reasons, this function can only
1159 * The application name will be used in contexts such as error messages,
1160 * or when displaying an application's name in the task list.
1165 g_set_application_name (const gchar *application_name)
1167 gboolean already_set = FALSE;
1169 G_LOCK (g_application_name);
1170 if (g_application_name)
1173 g_application_name = g_strdup (application_name);
1174 G_UNLOCK (g_application_name);
1177 g_warning ("g_set_application_name() called multiple times");
1181 * g_get_user_data_dir:
1183 * Returns a base directory in which to access application data such
1184 * as icons that is customized for a particular user.
1186 * On UNIX platforms this is determined using the mechanisms described in
1187 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
1188 * XDG Base Directory Specification</ulink>.
1189 * In this case the directory retrieved will be XDG_DATA_HOME.
1191 * On Windows this is the folder to use for local (as opposed to
1192 * roaming) application data. See documentation for
1193 * CSIDL_LOCAL_APPDATA. Note that on Windows it thus is the same as
1194 * what g_get_user_config_dir() returns.
1196 * Return value: a string owned by GLib that must not be modified
1201 g_get_user_data_dir (void)
1205 G_LOCK (g_utils_global);
1207 if (!g_user_data_dir)
1210 data_dir = get_special_folder (CSIDL_LOCAL_APPDATA);
1212 data_dir = (gchar *) g_getenv ("XDG_DATA_HOME");
1214 if (data_dir && data_dir[0])
1215 data_dir = g_strdup (data_dir);
1217 if (!data_dir || !data_dir[0])
1222 data_dir = g_build_filename (g_home_dir, ".local",
1225 data_dir = g_build_filename (g_tmp_dir, g_user_name, ".local",
1229 g_user_data_dir = data_dir;
1232 data_dir = g_user_data_dir;
1234 G_UNLOCK (g_utils_global);
1240 g_init_user_config_dir (void)
1244 if (!g_user_config_dir)
1247 config_dir = get_special_folder (CSIDL_LOCAL_APPDATA);
1249 config_dir = (gchar *) g_getenv ("XDG_CONFIG_HOME");
1251 if (config_dir && config_dir[0])
1252 config_dir = g_strdup (config_dir);
1254 if (!config_dir || !config_dir[0])
1259 config_dir = g_build_filename (g_home_dir, ".config", NULL);
1261 config_dir = g_build_filename (g_tmp_dir, g_user_name, ".config", NULL);
1264 g_user_config_dir = config_dir;
1269 * g_get_user_config_dir:
1271 * Returns a base directory in which to store user-specific application
1272 * configuration information such as user preferences and settings.
1274 * On UNIX platforms this is determined using the mechanisms described in
1275 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
1276 * XDG Base Directory Specification</ulink>.
1277 * In this case the directory retrieved will be XDG_CONFIG_HOME.
1279 * On Windows this is the folder to use for local (as opposed to
1280 * roaming) application data. See documentation for
1281 * CSIDL_LOCAL_APPDATA. Note that on Windows it thus is the same as
1282 * what g_get_user_data_dir() returns.
1284 * Return value: a string owned by GLib that must not be modified
1289 g_get_user_config_dir (void)
1291 G_LOCK (g_utils_global);
1293 g_init_user_config_dir ();
1295 G_UNLOCK (g_utils_global);
1297 return g_user_config_dir;
1301 * g_get_user_cache_dir:
1303 * Returns a base directory in which to store non-essential, cached
1304 * data specific to particular user.
1306 * On UNIX platforms this is determined using the mechanisms described in
1307 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
1308 * XDG Base Directory Specification</ulink>.
1309 * In this case the directory retrieved will be XDG_CACHE_HOME.
1311 * On Windows is the directory that serves as a common repository for
1312 * temporary Internet files. A typical path is
1313 * C:\Documents and Settings\username\Local Settings\Temporary Internet Files.
1314 * See documentation for CSIDL_INTERNET_CACHE.
1316 * Return value: a string owned by GLib that must not be modified
1321 g_get_user_cache_dir (void)
1325 G_LOCK (g_utils_global);
1327 if (!g_user_cache_dir)
1330 cache_dir = get_special_folder (CSIDL_INTERNET_CACHE); /* XXX correct? */
1332 cache_dir = (gchar *) g_getenv ("XDG_CACHE_HOME");
1334 if (cache_dir && cache_dir[0])
1335 cache_dir = g_strdup (cache_dir);
1337 if (!cache_dir || !cache_dir[0])
1342 cache_dir = g_build_filename (g_home_dir, ".cache", NULL);
1344 cache_dir = g_build_filename (g_tmp_dir, g_user_name, ".cache", NULL);
1346 g_user_cache_dir = cache_dir;
1349 cache_dir = g_user_cache_dir;
1351 G_UNLOCK (g_utils_global);
1357 * g_get_user_runtime_dir:
1359 * Returns a directory that is unique to the current user on the local
1362 * On UNIX platforms this is determined using the mechanisms described in
1363 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
1364 * XDG Base Directory Specification</ulink>. This is the directory
1365 * specified in the <envar>XDG_RUNTIME_DIR</envar> environment variable.
1366 * In the case that this variable is not set, GLib will issue a warning
1367 * message to stderr and return the value of g_get_user_cache_dir().
1369 * On Windows this is the folder to use for local (as opposed to
1370 * roaming) application data. See documentation for
1371 * CSIDL_LOCAL_APPDATA. Note that on Windows it thus is the same as
1372 * what g_get_user_config_dir() returns.
1374 * Returns: a string owned by GLib that must not be modified or freed.
1379 g_get_user_runtime_dir (void)
1382 static const gchar *runtime_dir;
1383 static gsize initialised;
1385 if (g_once_init_enter (&initialised))
1387 runtime_dir = g_strdup (getenv ("XDG_RUNTIME_DIR"));
1389 g_once_init_leave (&initialised, 1);
1395 /* Both fallback for UNIX and the default
1396 * in Windows: use the user cache directory.
1400 return g_get_user_cache_dir ();
1406 find_folder (OSType type)
1408 gchar *filename = NULL;
1411 if (FSFindFolder (kUserDomain, type, kDontCreateFolder, &found) == noErr)
1413 CFURLRef url = CFURLCreateFromFSRef (kCFAllocatorSystemDefault, &found);
1417 CFStringRef path = CFURLCopyFileSystemPath (url, kCFURLPOSIXPathStyle);
1421 filename = g_strdup (CFStringGetCStringPtr (path, kCFStringEncodingUTF8));
1425 filename = g_new0 (gchar, CFStringGetLength (path) * 3 + 1);
1427 CFStringGetCString (path, filename,
1428 CFStringGetLength (path) * 3 + 1,
1429 kCFStringEncodingUTF8);
1443 load_user_special_dirs (void)
1445 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] = find_folder (kDesktopFolderType);
1446 g_user_special_dirs[G_USER_DIRECTORY_DOCUMENTS] = find_folder (kDocumentsFolderType);
1447 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = find_folder (kDesktopFolderType); /* XXX correct ? */
1448 g_user_special_dirs[G_USER_DIRECTORY_MUSIC] = find_folder (kMusicDocumentsFolderType);
1449 g_user_special_dirs[G_USER_DIRECTORY_PICTURES] = find_folder (kPictureDocumentsFolderType);
1450 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = NULL;
1451 g_user_special_dirs[G_USER_DIRECTORY_TEMPLATES] = NULL;
1452 g_user_special_dirs[G_USER_DIRECTORY_VIDEOS] = find_folder (kMovieDocumentsFolderType);
1455 #endif /* HAVE_CARBON */
1457 #if defined(G_OS_WIN32)
1459 load_user_special_dirs (void)
1461 typedef HRESULT (WINAPI *t_SHGetKnownFolderPath) (const GUID *rfid,
1465 t_SHGetKnownFolderPath p_SHGetKnownFolderPath;
1467 static const GUID FOLDERID_Downloads =
1468 { 0x374de290, 0x123f, 0x4565, { 0x91, 0x64, 0x39, 0xc4, 0x92, 0x5e, 0x46, 0x7b } };
1469 static const GUID FOLDERID_Public =
1470 { 0xDFDF76A2, 0xC82A, 0x4D63, { 0x90, 0x6A, 0x56, 0x44, 0xAC, 0x45, 0x73, 0x85 } };
1474 p_SHGetKnownFolderPath = (t_SHGetKnownFolderPath) GetProcAddress (GetModuleHandle ("shell32.dll"),
1475 "SHGetKnownFolderPath");
1477 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1478 g_user_special_dirs[G_USER_DIRECTORY_DOCUMENTS] = get_special_folder (CSIDL_PERSONAL);
1480 if (p_SHGetKnownFolderPath == NULL)
1482 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1487 (*p_SHGetKnownFolderPath) (&FOLDERID_Downloads, 0, NULL, &wcp);
1490 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = g_utf16_to_utf8 (wcp, -1, NULL, NULL, NULL);
1491 if (g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] == NULL)
1492 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1493 CoTaskMemFree (wcp);
1496 g_user_special_dirs[G_USER_DIRECTORY_DOWNLOAD] = get_special_folder (CSIDL_DESKTOPDIRECTORY);
1499 g_user_special_dirs[G_USER_DIRECTORY_MUSIC] = get_special_folder (CSIDL_MYMUSIC);
1500 g_user_special_dirs[G_USER_DIRECTORY_PICTURES] = get_special_folder (CSIDL_MYPICTURES);
1502 if (p_SHGetKnownFolderPath == NULL)
1505 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1510 (*p_SHGetKnownFolderPath) (&FOLDERID_Public, 0, NULL, &wcp);
1513 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = g_utf16_to_utf8 (wcp, -1, NULL, NULL, NULL);
1514 if (g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] == NULL)
1515 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1516 CoTaskMemFree (wcp);
1519 g_user_special_dirs[G_USER_DIRECTORY_PUBLIC_SHARE] = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1522 g_user_special_dirs[G_USER_DIRECTORY_TEMPLATES] = get_special_folder (CSIDL_TEMPLATES);
1523 g_user_special_dirs[G_USER_DIRECTORY_VIDEOS] = get_special_folder (CSIDL_MYVIDEO);
1525 #endif /* G_OS_WIN32 */
1527 static void g_init_user_config_dir (void);
1529 #if defined(G_OS_UNIX) && !defined(HAVE_CARBON)
1531 /* adapted from xdg-user-dir-lookup.c
1533 * Copyright (C) 2007 Red Hat Inc.
1535 * Permission is hereby granted, free of charge, to any person
1536 * obtaining a copy of this software and associated documentation files
1537 * (the "Software"), to deal in the Software without restriction,
1538 * including without limitation the rights to use, copy, modify, merge,
1539 * publish, distribute, sublicense, and/or sell copies of the Software,
1540 * and to permit persons to whom the Software is furnished to do so,
1541 * subject to the following conditions:
1543 * The above copyright notice and this permission notice shall be
1544 * included in all copies or substantial portions of the Software.
1546 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
1547 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
1548 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
1549 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
1550 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
1551 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
1552 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
1556 load_user_special_dirs (void)
1563 g_init_user_config_dir ();
1564 config_file = g_build_filename (g_user_config_dir,
1568 if (!g_file_get_contents (config_file, &data, NULL, NULL))
1570 g_free (config_file);
1574 lines = g_strsplit (data, "\n", -1);
1575 n_lines = g_strv_length (lines);
1578 for (i = 0; i < n_lines; i++)
1580 gchar *buffer = lines[i];
1583 gboolean is_relative = FALSE;
1584 GUserDirectory directory;
1586 /* Remove newline at end */
1587 len = strlen (buffer);
1588 if (len > 0 && buffer[len - 1] == '\n')
1589 buffer[len - 1] = 0;
1592 while (*p == ' ' || *p == '\t')
1595 if (strncmp (p, "XDG_DESKTOP_DIR", strlen ("XDG_DESKTOP_DIR")) == 0)
1597 directory = G_USER_DIRECTORY_DESKTOP;
1598 p += strlen ("XDG_DESKTOP_DIR");
1600 else if (strncmp (p, "XDG_DOCUMENTS_DIR", strlen ("XDG_DOCUMENTS_DIR")) == 0)
1602 directory = G_USER_DIRECTORY_DOCUMENTS;
1603 p += strlen ("XDG_DOCUMENTS_DIR");
1605 else if (strncmp (p, "XDG_DOWNLOAD_DIR", strlen ("XDG_DOWNLOAD_DIR")) == 0)
1607 directory = G_USER_DIRECTORY_DOWNLOAD;
1608 p += strlen ("XDG_DOWNLOAD_DIR");
1610 else if (strncmp (p, "XDG_MUSIC_DIR", strlen ("XDG_MUSIC_DIR")) == 0)
1612 directory = G_USER_DIRECTORY_MUSIC;
1613 p += strlen ("XDG_MUSIC_DIR");
1615 else if (strncmp (p, "XDG_PICTURES_DIR", strlen ("XDG_PICTURES_DIR")) == 0)
1617 directory = G_USER_DIRECTORY_PICTURES;
1618 p += strlen ("XDG_PICTURES_DIR");
1620 else if (strncmp (p, "XDG_PUBLICSHARE_DIR", strlen ("XDG_PUBLICSHARE_DIR")) == 0)
1622 directory = G_USER_DIRECTORY_PUBLIC_SHARE;
1623 p += strlen ("XDG_PUBLICSHARE_DIR");
1625 else if (strncmp (p, "XDG_TEMPLATES_DIR", strlen ("XDG_TEMPLATES_DIR")) == 0)
1627 directory = G_USER_DIRECTORY_TEMPLATES;
1628 p += strlen ("XDG_TEMPLATES_DIR");
1630 else if (strncmp (p, "XDG_VIDEOS_DIR", strlen ("XDG_VIDEOS_DIR")) == 0)
1632 directory = G_USER_DIRECTORY_VIDEOS;
1633 p += strlen ("XDG_VIDEOS_DIR");
1638 while (*p == ' ' || *p == '\t')
1645 while (*p == ' ' || *p == '\t')
1652 if (strncmp (p, "$HOME", 5) == 0)
1660 d = strrchr (p, '"');
1667 /* remove trailing slashes */
1669 if (d[len - 1] == '/')
1675 g_user_special_dirs[directory] = g_build_filename (g_home_dir, d, NULL);
1678 g_user_special_dirs[directory] = g_strdup (d);
1682 g_free (config_file);
1685 #endif /* G_OS_UNIX && !HAVE_CARBON */
1689 * g_reload_user_special_dirs_cache:
1691 * Resets the cache used for g_get_user_special_dir(), so
1692 * that the latest on-disk version is used. Call this only
1693 * if you just changed the data on disk yourself.
1695 * Due to threadsafety issues this may cause leaking of strings
1696 * that were previously returned from g_get_user_special_dir()
1697 * that can't be freed. We ensure to only leak the data for
1698 * the directories that actually changed value though.
1703 g_reload_user_special_dirs_cache (void)
1707 G_LOCK (g_utils_global);
1709 if (g_user_special_dirs != NULL)
1711 /* save a copy of the pointer, to check if some memory can be preserved */
1712 char **old_g_user_special_dirs = g_user_special_dirs;
1715 /* recreate and reload our cache */
1716 g_user_special_dirs = g_new0 (gchar *, G_USER_N_DIRECTORIES);
1717 load_user_special_dirs ();
1719 /* only leak changed directories */
1720 for (i = 0; i < G_USER_N_DIRECTORIES; i++)
1722 old_val = old_g_user_special_dirs[i];
1723 if (g_strcmp0 (old_val, g_user_special_dirs[i]) == 0)
1726 g_free (g_user_special_dirs[i]);
1727 g_user_special_dirs[i] = old_val;
1733 /* free the old array */
1734 g_free (old_g_user_special_dirs);
1737 G_UNLOCK (g_utils_global);
1741 * g_get_user_special_dir:
1742 * @directory: the logical id of special directory
1744 * Returns the full path of a special directory using its logical id.
1746 * On Unix this is done using the XDG special user directories.
1747 * For compatibility with existing practise, %G_USER_DIRECTORY_DESKTOP
1748 * falls back to <filename>$HOME/Desktop</filename> when XDG special
1749 * user directories have not been set up.
1751 * Depending on the platform, the user might be able to change the path
1752 * of the special directory without requiring the session to restart; GLib
1753 * will not reflect any change once the special directories are loaded.
1755 * Return value: the path to the specified special directory, or %NULL
1756 * if the logical id was not found. The returned string is owned by
1757 * GLib and should not be modified or freed.
1762 g_get_user_special_dir (GUserDirectory directory)
1764 g_return_val_if_fail (directory >= G_USER_DIRECTORY_DESKTOP &&
1765 directory < G_USER_N_DIRECTORIES, NULL);
1767 G_LOCK (g_utils_global);
1769 if (G_UNLIKELY (g_user_special_dirs == NULL))
1771 g_user_special_dirs = g_new0 (gchar *, G_USER_N_DIRECTORIES);
1773 load_user_special_dirs ();
1775 /* Special-case desktop for historical compatibility */
1776 if (g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] == NULL)
1780 g_user_special_dirs[G_USER_DIRECTORY_DESKTOP] =
1781 g_build_filename (g_home_dir, "Desktop", NULL);
1785 G_UNLOCK (g_utils_global);
1787 return g_user_special_dirs[directory];
1792 #undef g_get_system_data_dirs
1795 get_module_for_address (gconstpointer address)
1797 /* Holds the g_utils_global lock */
1799 static gboolean beenhere = FALSE;
1800 typedef BOOL (WINAPI *t_GetModuleHandleExA) (DWORD, LPCTSTR, HMODULE *);
1801 static t_GetModuleHandleExA p_GetModuleHandleExA = NULL;
1802 HMODULE hmodule = NULL;
1809 p_GetModuleHandleExA =
1810 (t_GetModuleHandleExA) GetProcAddress (GetModuleHandle ("kernel32.dll"),
1811 "GetModuleHandleExA");
1815 if (p_GetModuleHandleExA == NULL ||
1816 !(*p_GetModuleHandleExA) (GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT |
1817 GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
1820 MEMORY_BASIC_INFORMATION mbi;
1821 VirtualQuery (address, &mbi, sizeof (mbi));
1822 hmodule = (HMODULE) mbi.AllocationBase;
1829 get_module_share_dir (gconstpointer address)
1835 hmodule = get_module_for_address (address);
1836 if (hmodule == NULL)
1839 filename = g_win32_get_package_installation_directory_of_module (hmodule);
1840 retval = g_build_filename (filename, "share", NULL);
1846 const gchar * const *
1847 g_win32_get_system_data_dirs_for_module (void (*address_of_function)())
1851 static GHashTable *per_module_data_dirs = NULL;
1856 if (address_of_function)
1858 G_LOCK (g_utils_global);
1859 hmodule = get_module_for_address (address_of_function);
1860 if (hmodule != NULL)
1862 if (per_module_data_dirs == NULL)
1863 per_module_data_dirs = g_hash_table_new (NULL, NULL);
1866 retval = g_hash_table_lookup (per_module_data_dirs, hmodule);
1870 G_UNLOCK (g_utils_global);
1871 return (const gchar * const *) retval;
1877 data_dirs = g_array_new (TRUE, TRUE, sizeof (char *));
1879 /* Documents and Settings\All Users\Application Data */
1880 p = get_special_folder (CSIDL_COMMON_APPDATA);
1882 g_array_append_val (data_dirs, p);
1884 /* Documents and Settings\All Users\Documents */
1885 p = get_special_folder (CSIDL_COMMON_DOCUMENTS);
1887 g_array_append_val (data_dirs, p);
1889 /* Using the above subfolders of Documents and Settings perhaps
1890 * makes sense from a Windows perspective.
1892 * But looking at the actual use cases of this function in GTK+
1893 * and GNOME software, what we really want is the "share"
1894 * subdirectory of the installation directory for the package
1895 * our caller is a part of.
1897 * The address_of_function parameter, if non-NULL, points to a
1898 * function in the calling module. Use that to determine that
1899 * module's installation folder, and use its "share" subfolder.
1901 * Additionally, also use the "share" subfolder of the installation
1902 * locations of GLib and the .exe file being run.
1904 * To guard against none of the above being what is really wanted,
1905 * callers of this function should have Win32-specific code to look
1906 * up their installation folder themselves, and handle a subfolder
1907 * "share" of it in the same way as the folders returned from this
1911 p = get_module_share_dir (address_of_function);
1913 g_array_append_val (data_dirs, p);
1915 if (glib_dll != NULL)
1917 gchar *glib_root = g_win32_get_package_installation_directory_of_module (glib_dll);
1918 p = g_build_filename (glib_root, "share", NULL);
1920 g_array_append_val (data_dirs, p);
1924 exe_root = g_win32_get_package_installation_directory_of_module (NULL);
1925 p = g_build_filename (exe_root, "share", NULL);
1927 g_array_append_val (data_dirs, p);
1930 retval = (gchar **) g_array_free (data_dirs, FALSE);
1932 if (address_of_function)
1934 if (hmodule != NULL)
1935 g_hash_table_insert (per_module_data_dirs, hmodule, retval);
1936 G_UNLOCK (g_utils_global);
1939 return (const gchar * const *) retval;
1945 * g_get_system_data_dirs:
1947 * Returns an ordered list of base directories in which to access
1948 * system-wide application data.
1950 * On UNIX platforms this is determined using the mechanisms described in
1951 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
1952 * XDG Base Directory Specification</ulink>
1953 * In this case the list of directories retrieved will be XDG_DATA_DIRS.
1955 * On Windows the first elements in the list are the Application Data
1956 * and Documents folders for All Users. (These can be determined only
1957 * on Windows 2000 or later and are not present in the list on other
1958 * Windows versions.) See documentation for CSIDL_COMMON_APPDATA and
1959 * CSIDL_COMMON_DOCUMENTS.
1961 * Then follows the "share" subfolder in the installation folder for
1962 * the package containing the DLL that calls this function, if it can
1965 * Finally the list contains the "share" subfolder in the installation
1966 * folder for GLib, and in the installation folder for the package the
1967 * application's .exe file belongs to.
1969 * The installation folders above are determined by looking up the
1970 * folder where the module (DLL or EXE) in question is located. If the
1971 * folder's name is "bin", its parent is used, otherwise the folder
1974 * Note that on Windows the returned list can vary depending on where
1975 * this function is called.
1977 * Return value: (array zero-terminated=1) (transfer none): a %NULL-terminated array of strings owned by GLib that must
1978 * not be modified or freed.
1981 const gchar * const *
1982 g_get_system_data_dirs (void)
1984 gchar **data_dir_vector;
1986 G_LOCK (g_utils_global);
1988 if (!g_system_data_dirs)
1991 data_dir_vector = (gchar **) g_win32_get_system_data_dirs_for_module (NULL);
1993 gchar *data_dirs = (gchar *) g_getenv ("XDG_DATA_DIRS");
1995 if (!data_dirs || !data_dirs[0])
1996 data_dirs = "/usr/local/share/:/usr/share/";
1998 data_dir_vector = g_strsplit (data_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2001 g_system_data_dirs = data_dir_vector;
2004 data_dir_vector = g_system_data_dirs;
2006 G_UNLOCK (g_utils_global);
2008 return (const gchar * const *) data_dir_vector;
2012 * g_get_system_config_dirs:
2014 * Returns an ordered list of base directories in which to access
2015 * system-wide configuration information.
2017 * On UNIX platforms this is determined using the mechanisms described in
2018 * the <ulink url="http://www.freedesktop.org/Standards/basedir-spec">
2019 * XDG Base Directory Specification</ulink>.
2020 * In this case the list of directories retrieved will be XDG_CONFIG_DIRS.
2022 * On Windows is the directory that contains application data for all users.
2023 * A typical path is C:\Documents and Settings\All Users\Application Data.
2024 * This folder is used for application data that is not user specific.
2025 * For example, an application can store a spell-check dictionary, a database
2026 * of clip art, or a log file in the CSIDL_COMMON_APPDATA folder.
2027 * This information will not roam and is available to anyone using the computer.
2029 * Return value: (array zero-terminated=1) (transfer none): a %NULL-terminated array of strings owned by GLib that must
2030 * not be modified or freed.
2033 const gchar * const *
2034 g_get_system_config_dirs (void)
2036 gchar *conf_dirs, **conf_dir_vector;
2038 G_LOCK (g_utils_global);
2040 if (!g_system_config_dirs)
2043 conf_dirs = get_special_folder (CSIDL_COMMON_APPDATA);
2046 conf_dir_vector = g_strsplit (conf_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2051 /* Return empty list */
2052 conf_dir_vector = g_strsplit ("", G_SEARCHPATH_SEPARATOR_S, 0);
2055 conf_dirs = (gchar *) g_getenv ("XDG_CONFIG_DIRS");
2057 if (!conf_dirs || !conf_dirs[0])
2058 conf_dirs = "/etc/xdg";
2060 conf_dir_vector = g_strsplit (conf_dirs, G_SEARCHPATH_SEPARATOR_S, 0);
2063 g_system_config_dirs = conf_dir_vector;
2066 conf_dir_vector = g_system_config_dirs;
2067 G_UNLOCK (g_utils_global);
2069 return (const gchar * const *) conf_dir_vector;
2073 * g_nullify_pointer:
2074 * @nullify_location: the memory address of the pointer.
2076 * Set the pointer at the specified location to %NULL.
2079 g_nullify_pointer (gpointer *nullify_location)
2081 g_return_if_fail (nullify_location != NULL);
2083 *nullify_location = NULL;
2086 #define KILOBYTE_FACTOR (G_GOFFSET_CONSTANT (1000))
2087 #define MEGABYTE_FACTOR (KILOBYTE_FACTOR * KILOBYTE_FACTOR)
2088 #define GIGABYTE_FACTOR (MEGABYTE_FACTOR * KILOBYTE_FACTOR)
2089 #define TERABYTE_FACTOR (GIGABYTE_FACTOR * KILOBYTE_FACTOR)
2090 #define PETABYTE_FACTOR (TERABYTE_FACTOR * KILOBYTE_FACTOR)
2091 #define EXABYTE_FACTOR (PETABYTE_FACTOR * KILOBYTE_FACTOR)
2093 #define KIBIBYTE_FACTOR (G_GOFFSET_CONSTANT (1024))
2094 #define MEBIBYTE_FACTOR (KIBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2095 #define GIBIBYTE_FACTOR (MEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2096 #define TEBIBYTE_FACTOR (GIBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2097 #define PEBIBYTE_FACTOR (TEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2098 #define EXBIBYTE_FACTOR (PEBIBYTE_FACTOR * KIBIBYTE_FACTOR)
2102 * @size: a size in bytes
2104 * Formats a size (for example the size of a file) into a human readable
2105 * string. Sizes are rounded to the nearest size prefix (kB, MB, GB)
2106 * and are displayed rounded to the nearest tenth. E.g. the file size
2107 * 3292528 bytes will be converted into the string "3.2 MB".
2109 * The prefix units base is 1000 (i.e. 1 kB is 1000 bytes).
2111 * This string should be freed with g_free() when not needed any longer.
2113 * See g_format_size_full() for more options about how the size might be
2116 * Returns: a newly-allocated formatted string containing a human readable
2122 g_format_size (guint64 size)
2124 return g_format_size_full (size, G_FORMAT_SIZE_DEFAULT);
2129 * @G_FORMAT_SIZE_DEFAULT: behave the same as g_format_size()
2130 * @G_FORMAT_SIZE_LONG_FORMAT: include the exact number of bytes as part
2131 * of the returned string. For example, "45.6 kB (45,612 bytes)".
2132 * @G_FORMAT_SIZE_IEC_UNITS: use IEC (base 1024) units with "KiB"-style
2133 * suffixes. IEC units should only be used for reporting things with
2134 * a strong "power of 2" basis, like RAM sizes or RAID stripe sizes.
2135 * Network and storage sizes should be reported in the normal SI units.
2137 * Flags to modify the format of the string returned by g_format_size_full().
2141 * g_format_size_full:
2142 * @size: a size in bytes
2143 * @flags: #GFormatSizeFlags to modify the output
2147 * This function is similar to g_format_size() but allows for flags
2148 * that modify the output. See #GFormatSizeFlags.
2150 * Returns: a newly-allocated formatted string containing a human
2151 * readable file size
2156 g_format_size_full (guint64 size,
2157 GFormatSizeFlags flags)
2161 string = g_string_new (NULL);
2163 if (flags & G_FORMAT_SIZE_IEC_UNITS)
2165 if (size < KIBIBYTE_FACTOR)
2167 g_string_printf (string,
2168 g_dngettext(GETTEXT_PACKAGE, "%u byte", "%u bytes", (guint) size),
2170 flags &= ~G_FORMAT_SIZE_LONG_FORMAT;
2173 else if (size < MEBIBYTE_FACTOR)
2174 g_string_printf (string, _("%.1f KiB"), (gdouble) size / (gdouble) KIBIBYTE_FACTOR);
2175 else if (size < GIBIBYTE_FACTOR)
2176 g_string_printf (string, _("%.1f MiB"), (gdouble) size / (gdouble) MEBIBYTE_FACTOR);
2178 else if (size < TEBIBYTE_FACTOR)
2179 g_string_printf (string, _("%.1f GiB"), (gdouble) size / (gdouble) GIBIBYTE_FACTOR);
2181 else if (size < PEBIBYTE_FACTOR)
2182 g_string_printf (string, _("%.1f TiB"), (gdouble) size / (gdouble) TEBIBYTE_FACTOR);
2184 else if (size < EXBIBYTE_FACTOR)
2185 g_string_printf (string, _("%.1f PiB"), (gdouble) size / (gdouble) PEBIBYTE_FACTOR);
2188 g_string_printf (string, _("%.1f EiB"), (gdouble) size / (gdouble) EXBIBYTE_FACTOR);
2192 if (size < KILOBYTE_FACTOR)
2194 g_string_printf (string,
2195 g_dngettext(GETTEXT_PACKAGE, "%u byte", "%u bytes", (guint) size),
2197 flags &= ~G_FORMAT_SIZE_LONG_FORMAT;
2200 else if (size < MEGABYTE_FACTOR)
2201 g_string_printf (string, _("%.1f kB"), (gdouble) size / (gdouble) KILOBYTE_FACTOR);
2203 else if (size < GIGABYTE_FACTOR)
2204 g_string_printf (string, _("%.1f MB"), (gdouble) size / (gdouble) MEGABYTE_FACTOR);
2206 else if (size < TERABYTE_FACTOR)
2207 g_string_printf (string, _("%.1f GB"), (gdouble) size / (gdouble) GIGABYTE_FACTOR);
2208 else if (size < PETABYTE_FACTOR)
2209 g_string_printf (string, _("%.1f TB"), (gdouble) size / (gdouble) TERABYTE_FACTOR);
2211 else if (size < EXABYTE_FACTOR)
2212 g_string_printf (string, _("%.1f PB"), (gdouble) size / (gdouble) PETABYTE_FACTOR);
2215 g_string_printf (string, _("%.1f EB"), (gdouble) size / (gdouble) EXABYTE_FACTOR);
2218 if (flags & G_FORMAT_SIZE_LONG_FORMAT)
2220 /* First problem: we need to use the number of bytes to decide on
2221 * the plural form that is used for display, but the number of
2222 * bytes potentially exceeds the size of a guint (which is what
2223 * ngettext() takes).
2225 * From a pragmatic standpoint, it seems that all known languages
2226 * base plural forms on one or both of the following:
2228 * - the lowest digits of the number
2230 * - if the number if greater than some small value
2232 * Here's how we fake it: Draw an arbitrary line at one thousand.
2233 * If the number is below that, then fine. If it is above it,
2234 * then we take the modulus of the number by one thousand (in
2235 * order to keep the lowest digits) and add one thousand to that
2236 * (in order to ensure that 1001 is not treated the same as 1).
2238 guint plural_form = size < 1000 ? size : size % 1000 + 1000;
2240 /* Second problem: we need to translate the string "%u byte" and
2241 * "%u bytes" for pluralisation, but the correct number format to
2242 * use for a gsize is different depending on which architecture
2245 * Solution: format the number separately and use "%s bytes" on
2248 const gchar *translated_format;
2249 gchar *formatted_number;
2251 /* Translators: the %s in "%s bytes" will always be replaced by a number. */
2252 translated_format = g_dngettext(GETTEXT_PACKAGE, "%s byte", "%s bytes", plural_form);
2253 /* XXX: Windows doesn't support the "'" format modifier, so we
2254 * must not use it there. Instead, just display the number
2255 * without separation. Bug #655336 is open until a solution is
2259 formatted_number = g_strdup_printf ("%'"G_GUINT64_FORMAT, size);
2261 formatted_number = g_strdup_printf ("%"G_GUINT64_FORMAT, size);
2264 g_string_append (string, " (");
2265 g_string_append_printf (string, translated_format, formatted_number);
2266 g_free (formatted_number);
2267 g_string_append (string, ")");
2270 return g_string_free (string, FALSE);
2274 * g_format_size_for_display:
2275 * @size: a size in bytes
2277 * Formats a size (for example the size of a file) into a human
2278 * readable string. Sizes are rounded to the nearest size prefix
2279 * (KB, MB, GB) and are displayed rounded to the nearest tenth.
2280 * E.g. the file size 3292528 bytes will be converted into the
2283 * The prefix units base is 1024 (i.e. 1 KB is 1024 bytes).
2285 * This string should be freed with g_free() when not needed any longer.
2287 * Returns: a newly-allocated formatted string containing a human
2288 * readable file size
2292 * Deprecated:2.30: This function is broken due to its use of SI
2293 * suffixes to denote IEC units. Use g_format_size() instead.
2296 g_format_size_for_display (goffset size)
2298 if (size < (goffset) KIBIBYTE_FACTOR)
2299 return g_strdup_printf (g_dngettext(GETTEXT_PACKAGE, "%u byte", "%u bytes",(guint) size), (guint) size);
2302 gdouble displayed_size;
2304 if (size < (goffset) MEBIBYTE_FACTOR)
2306 displayed_size = (gdouble) size / (gdouble) KIBIBYTE_FACTOR;
2307 return g_strdup_printf (_("%.1f KB"), displayed_size);
2309 else if (size < (goffset) GIBIBYTE_FACTOR)
2311 displayed_size = (gdouble) size / (gdouble) MEBIBYTE_FACTOR;
2312 return g_strdup_printf (_("%.1f MB"), displayed_size);
2314 else if (size < (goffset) TEBIBYTE_FACTOR)
2316 displayed_size = (gdouble) size / (gdouble) GIBIBYTE_FACTOR;
2317 return g_strdup_printf (_("%.1f GB"), displayed_size);
2319 else if (size < (goffset) PEBIBYTE_FACTOR)
2321 displayed_size = (gdouble) size / (gdouble) TEBIBYTE_FACTOR;
2322 return g_strdup_printf (_("%.1f TB"), displayed_size);
2324 else if (size < (goffset) EXBIBYTE_FACTOR)
2326 displayed_size = (gdouble) size / (gdouble) PEBIBYTE_FACTOR;
2327 return g_strdup_printf (_("%.1f PB"), displayed_size);
2331 displayed_size = (gdouble) size / (gdouble) EXBIBYTE_FACTOR;
2332 return g_strdup_printf (_("%.1f EB"), displayed_size);
2340 * _glib_get_locale_dir:
2342 * Return the path to the share\locale or lib\locale subfolder of the
2343 * GLib installation folder. The path is in the system codepage. We
2344 * have to use system codepage as bindtextdomain() doesn't have a
2348 _glib_get_locale_dir (void)
2350 gchar *install_dir = NULL, *locale_dir;
2351 gchar *retval = NULL;
2353 if (glib_dll != NULL)
2354 install_dir = g_win32_get_package_installation_directory_of_module (glib_dll);
2359 * Append "/share/locale" or "/lib/locale" depending on whether
2360 * autoconfigury detected GNU gettext or not.
2362 const char *p = GLIB_LOCALE_DIR + strlen (GLIB_LOCALE_DIR);
2368 locale_dir = g_build_filename (install_dir, p, NULL);
2370 retval = g_win32_locale_filename_from_utf8 (locale_dir);
2372 g_free (install_dir);
2373 g_free (locale_dir);
2379 return g_strdup ("");
2382 #undef GLIB_LOCALE_DIR
2384 #endif /* G_OS_WIN32 */
2387 #if defined (G_OS_WIN32) && !defined (_WIN64)
2389 /* Binary compatibility versions. Not for newly compiled code. */
2391 #undef g_find_program_in_path
2394 g_find_program_in_path (const gchar *program)
2396 gchar *utf8_program = g_locale_to_utf8 (program, -1, NULL, NULL, NULL);
2397 gchar *utf8_retval = g_find_program_in_path_utf8 (utf8_program);
2400 g_free (utf8_program);
2401 if (utf8_retval == NULL)
2403 retval = g_locale_from_utf8 (utf8_retval, -1, NULL, NULL, NULL);
2404 g_free (utf8_retval);
2409 #undef g_get_user_name
2412 g_get_user_name (void)
2414 g_get_any_init_locked ();
2415 return g_user_name_cp;
2418 #undef g_get_real_name
2421 g_get_real_name (void)
2423 g_get_any_init_locked ();
2424 return g_real_name_cp;
2427 #undef g_get_home_dir
2430 g_get_home_dir (void)
2432 g_get_any_init_locked ();
2433 return g_home_dir_cp;
2436 #undef g_get_tmp_dir
2439 g_get_tmp_dir (void)
2441 g_get_any_init_locked ();
2442 return g_tmp_dir_cp;