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 Library 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 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library 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 * MT safe for the unix part, FIXME: make the win32 part MT safe as well.
28 #include "glibconfig.h"
41 #include <sys/types.h>
42 #ifdef HAVE_SYS_PARAM_H
43 #include <sys/param.h>
47 # define STRICT /* Strict typing, please */
54 # endif /* _MSC_VER */
55 #endif /* NATIVE_WIN32 */
57 /* implement Glib's inline functions
59 #define G_INLINE_FUNC extern
60 #define G_CAN_INLINE 1
64 #define G_PATH_LENGTH (MAXPATHLEN + 1)
65 #elif defined (PATH_MAX)
66 #define G_PATH_LENGTH (PATH_MAX + 1)
67 #else /* !MAXPATHLEN */
68 #define G_PATH_LENGTH (2048 + 1)
69 #endif /* !MAXPATHLEN && !PATH_MAX */
71 const guint glib_major_version = GLIB_MAJOR_VERSION;
72 const guint glib_minor_version = GLIB_MINOR_VERSION;
73 const guint glib_micro_version = GLIB_MICRO_VERSION;
74 const guint glib_interface_age = GLIB_INTERFACE_AGE;
75 const guint glib_binary_age = GLIB_BINARY_AGE;
77 #if defined (NATIVE_WIN32) && defined (__LCC__)
79 LibMain (void *hinstDll,
80 unsigned long dwReason,
85 #endif /* NATIVE_WIN32 && __LCC__ */
88 g_atexit (GVoidFunc func)
93 /* keep this in sync with glib.h */
95 #ifdef G_NATIVE_ATEXIT
96 result = ATEXIT (func);
98 error = g_strerror (errno);
99 #elif defined (HAVE_ATEXIT)
100 # ifdef NeXT /* @#%@! NeXTStep */
101 result = !atexit ((void (*)(void)) func);
103 error = g_strerror (errno);
105 result = atexit ((void (*)(void)) func);
107 error = g_strerror (errno);
109 #elif defined (HAVE_ON_EXIT)
110 result = on_exit ((void (*)(int, void *)) func, NULL);
112 error = g_strerror (errno);
115 error = "no implementation";
116 #endif /* G_NATIVE_ATEXIT */
119 g_error ("Could not register atexit() function: %s", error);
123 g_snprintf (gchar *str,
128 #ifdef HAVE_VSNPRINTF
132 va_start (args, fmt);
133 retval = vsnprintf (str, n, fmt, args);
137 #else /* !HAVE_VSNPRINTF */
141 va_start (args, fmt);
142 printed = g_strdup_vprintf (fmt, args);
145 strncpy (str, printed, n);
151 #endif /* !HAVE_VSNPRINTF */
155 g_vsnprintf (gchar *str,
160 #ifdef HAVE_VSNPRINTF
163 retval = vsnprintf (str, n, fmt, args);
166 #else /* !HAVE_VSNPRINTF */
169 printed = g_strdup_vprintf (fmt, args);
170 strncpy (str, printed, n);
176 #endif /* !HAVE_VSNPRINTF */
180 g_parse_debug_string (const gchar *string,
187 g_return_val_if_fail (string != NULL, 0);
189 if (!g_strcasecmp (string, "all"))
191 for (i=0; i<nkeys; i++)
192 result |= keys[i].value;
196 gchar *str = g_strdup (string);
199 gboolean done = FALSE;
212 for (i=0; i<nkeys; i++)
213 if (!g_strcasecmp(keys[i].key, p))
214 result |= keys[i].value;
226 g_basename (const gchar *file_name)
228 register gchar *base;
230 g_return_val_if_fail (file_name != NULL, NULL);
232 base = strrchr (file_name, G_DIR_SEPARATOR);
237 if (isalpha (file_name[0]) && file_name[1] == ':')
238 return (gchar*) file_name + 2;
239 #endif /* NATIVE_WIN32 */
241 return (gchar*) file_name;
245 g_path_is_absolute (const gchar *file_name)
247 g_return_val_if_fail (file_name != NULL, FALSE);
249 if (file_name[0] == G_DIR_SEPARATOR)
253 if (isalpha (file_name[0]) && file_name[1] == ':' && file_name[2] == G_DIR_SEPARATOR)
261 g_path_skip_root (gchar *file_name)
263 g_return_val_if_fail (file_name != NULL, NULL);
265 if (file_name[0] == G_DIR_SEPARATOR)
266 return file_name + 1;
269 if (isalpha (file_name[0]) && file_name[1] == ':' && file_name[2] == G_DIR_SEPARATOR)
270 return file_name + 3;
277 g_dirname (const gchar *file_name)
279 register gchar *base;
282 g_return_val_if_fail (file_name != NULL, NULL);
284 base = strrchr (file_name, G_DIR_SEPARATOR);
286 return g_strdup (".");
287 while (base > file_name && *base == G_DIR_SEPARATOR)
289 len = (guint) 1 + base - file_name;
291 base = g_new (gchar, len + 1);
292 g_memmove (base, file_name, len);
299 g_get_current_dir (void)
304 buffer = g_new (gchar, G_PATH_LENGTH);
307 /* We don't use getcwd(3) on SUNOS, because, it does a popen("pwd")
308 * and, if that wasn't bad enough, hangs in doing so.
310 #if defined (sun) && !defined (__SVR4)
311 dir = getwd (buffer);
313 dir = getcwd (buffer, G_PATH_LENGTH - 1);
316 if (!dir || !*buffer)
318 /* hm, should we g_error() out here?
319 * this can happen if e.g. "./" has mode \0000
321 buffer[0] = G_DIR_SEPARATOR;
325 dir = g_strdup (buffer);
332 g_getenv (const gchar *variable)
335 g_return_val_if_fail (variable != NULL, NULL);
337 return getenv (variable);
341 static gchar *p = NULL;
345 g_return_val_if_fail (variable != NULL, NULL);
347 v = getenv (variable);
351 /* On Windows NT, it is relatively typical that environment variables
352 * contain references to other environment variables. Handle that by
353 * calling ExpandEnvironmentStrings.
356 /* First check how much space we need */
357 k = ExpandEnvironmentStrings (v, dummy, 2);
358 /* Then allocate that much, and actualy do the expansion */
366 p = g_realloc (p, k);
369 ExpandEnvironmentStrings (v, p, k);
375 G_LOCK_DECLARE_STATIC (g_utils_global);
377 static gchar *g_tmp_dir = NULL;
378 static gchar *g_user_name = NULL;
379 static gchar *g_real_name = NULL;
380 static gchar *g_home_dir = NULL;
382 /* HOLDS: g_utils_global_lock */
384 g_get_any_init (void)
388 g_tmp_dir = g_strdup (g_getenv ("TMPDIR"));
390 g_tmp_dir = g_strdup (g_getenv ("TMP"));
392 g_tmp_dir = g_strdup (g_getenv ("TEMP"));
398 g_tmp_dir = g_strdup (P_tmpdir);
399 k = strlen (g_tmp_dir);
400 if (g_tmp_dir[k-1] == G_DIR_SEPARATOR)
401 g_tmp_dir[k-1] = '\0';
408 g_tmp_dir = g_strdup ("/tmp");
409 #else /* NATIVE_WIN32 */
410 g_tmp_dir = g_strdup ("C:\\");
411 #endif /* NATIVE_WIN32 */
415 /* The official way to specify a home directory on NT is
416 * the HOMEDRIVE and HOMEPATH environment variables.
418 * This is inside #ifdef NATIVE_WIN32 because with the cygwin dll,
419 * HOME should be a POSIX style pathname.
422 if (getenv ("HOMEDRIVE") != NULL && getenv ("HOMEPATH") != NULL)
424 gchar *homedrive, *homepath;
426 homedrive = g_strdup (g_getenv ("HOMEDRIVE"));
427 homepath = g_strdup (g_getenv ("HOMEPATH"));
429 g_home_dir = g_strconcat (homedrive, homepath, NULL);
433 #endif /* !NATIVE_WIN32 */
436 g_home_dir = g_strdup (g_getenv ("HOME"));
441 struct passwd *pw = NULL;
442 gpointer buffer = NULL;
444 # ifdef HAVE_GETPWUID_R
446 guint bufsize = 1; /* sizeof (struct passwd); */
450 buffer = g_malloc (bufsize);
452 # ifdef HAVE_GETPWUID_R_POSIX
453 /* There appears to be some confusion about what the return
454 value should be, and whether errno is set or not.
455 So, we are careful about it. */
457 error = getpwuid_r (getuid (), &pwd, buffer, bufsize, &pw);
462 /* Some kind of error.
464 SUSv2 says returned value is an error code; says nothing
465 about `errno'. GNU Libc says some non-null (sic) value and
466 errno is set. Either way, this code path is chosen.
468 If `errno' isn't changed, the return value contains the
469 error code (like ERANGE).
471 If `errno' is changed, then it must be right, irrespective
472 of whether the return value follows SUSv2 or not. */
476 # else /* !HAVE_GETPWUID_R_POSIX */
477 pw = getpwuid_r (getuid (), &pwd, buffer, bufsize);
480 /* If it got here, there is an error. The `uid' should be
481 valid, so there must be something else wrong. */
483 # endif /* !HAVE_GETPWUID_R_POSIX */
485 /* If it came here, there's some kind of error. */
494 g_warning ("getpwuid_r(): failed due to: %s", g_strerror (error));
495 /* Make any subsequent g_free (buffer) a no-op. */
501 # else /* !HAVE_GETPWUID_R */
504 pw = getpwuid (getuid ());
507 # endif /* !HAVE_GETPWUID_R */
511 g_user_name = g_strdup (pw->pw_name);
512 g_real_name = g_strdup (pw->pw_gecos);
514 g_home_dir = g_strdup (pw->pw_dir);
519 #else /* !HAVE_PWD_H */
526 if (GetUserName (buffer, &len))
528 g_user_name = g_strdup (buffer);
529 g_real_name = g_strdup (buffer);
532 # else /* !NATIVE_WIN32 */
533 /* why are we forcefully setting g_home_dir to NULL here? */
536 # endif /* !NATIVE_WIN32 */
538 #endif /* !HAVE_PWD_H */
541 g_user_name = g_strdup ("somebody");
543 g_real_name = g_strdup ("Unknown");
548 g_get_user_name (void)
550 G_LOCK (g_utils_global);
553 G_UNLOCK (g_utils_global);
559 g_get_real_name (void)
561 G_LOCK (g_utils_global);
564 G_UNLOCK (g_utils_global);
569 /* Return the home directory of the user. If there is a HOME
570 * environment variable, its value is returned, otherwise use some
571 * system-dependent way of finding it out. If no home directory can be
572 * deduced, return NULL.
576 g_get_home_dir (void)
578 G_LOCK (g_utils_global);
581 G_UNLOCK (g_utils_global);
586 /* Return a directory to be used to store temporary files. This is the
587 * value of the TMPDIR, TMP or TEMP environment variables (they are
588 * checked in that order). If none of those exist, use P_tmpdir from
589 * stdio.h. If that isn't defined, return "/tmp" on POSIXly systems,
590 * and C:\ on Windows.
596 G_LOCK (g_utils_global);
599 G_UNLOCK (g_utils_global);
604 static gchar *g_prgname = NULL;
611 G_LOCK (g_utils_global);
613 G_UNLOCK (g_utils_global);
619 g_set_prgname (const gchar *prgname)
623 G_LOCK (g_utils_global);
625 g_prgname = g_strdup (prgname);
627 G_UNLOCK (g_utils_global);
631 g_direct_hash (gconstpointer v)
633 return GPOINTER_TO_UINT (v);
637 g_direct_equal (gconstpointer v1,
640 return GPOINTER_TO_UINT (v1) == GPOINTER_TO_UINT (v2);
644 g_int_equal (gconstpointer v1,
647 return *((const gint*) v1) == *((const gint*) v2);
651 g_int_hash (gconstpointer v)
653 return *(const gint*) v;
656 #if 0 /* Old IO Channels */
659 g_iochannel_new (gint fd)
661 GIOChannel *channel = g_new (GIOChannel, 1);
667 channel->peer_fd = 0;
669 channel->need_wakeups = 0;
670 #endif /* NATIVE_WIN32 */
676 g_iochannel_free (GIOChannel *channel)
678 g_return_if_fail (channel != NULL);
684 g_iochannel_close_and_free (GIOChannel *channel)
686 g_return_if_fail (channel != NULL);
690 g_iochannel_free (channel);
693 #undef g_iochannel_wakeup_peer
696 g_iochannel_wakeup_peer (GIOChannel *channel)
699 static guint message = 0;
702 g_return_if_fail (channel != NULL);
706 message = RegisterWindowMessage ("gdk-pipe-readable");
709 g_print ("g_iochannel_wakeup_peer: calling PostThreadMessage (%#x, %d, %d, %d)\n",
710 channel->peer, message, channel->peer_fd, channel->offset);
712 PostThreadMessage (channel->peer, message,
713 channel->peer_fd, channel->offset);
714 #endif /* NATIVE_WIN32 */
717 #endif /* Old IO Channels */
723 gwin_ftruncate (gint fd,
729 g_return_val_if_fail (fd >= 0, -1);
731 hfile = (HANDLE) _get_osfhandle (fd);
732 curpos = SetFilePointer (hfile, 0, NULL, FILE_CURRENT);
733 if (curpos == 0xFFFFFFFF
734 || SetFilePointer (hfile, size, NULL, FILE_BEGIN) == 0xFFFFFFFF
735 || !SetEndOfFile (hfile))
737 gint error = GetLastError ();
741 case ERROR_INVALID_HANDLE:
756 gwin_opendir (const char *dirname)
762 g_return_val_if_fail (dirname != NULL, NULL);
764 result = g_new0 (DIR, 1);
765 result->find_file_data = g_new0 (WIN32_FIND_DATA, 1);
766 result->dir_name = g_strdup (dirname);
768 k = strlen (result->dir_name);
769 if (k && result->dir_name[k - 1] == '\\')
771 result->dir_name[k - 1] = '\0';
774 mask = g_strdup_printf ("%s\\*", result->dir_name);
776 result->find_file_handle = (guint) FindFirstFile (mask,
777 (LPWIN32_FIND_DATA) result->find_file_data);
780 if (result->find_file_handle == (guint) INVALID_HANDLE_VALUE)
782 int error = GetLastError ();
784 g_free (result->dir_name);
785 g_free (result->find_file_data);
794 result->just_opened = TRUE;
800 gwin_readdir (DIR *dir)
802 static struct dirent result;
804 g_return_val_if_fail (dir != NULL, NULL);
806 if (dir->just_opened)
807 dir->just_opened = FALSE;
810 if (!FindNextFile ((HANDLE) dir->find_file_handle,
811 (LPWIN32_FIND_DATA) dir->find_file_data))
813 int error = GetLastError ();
817 case ERROR_NO_MORE_FILES:
825 strcpy (result.d_name, g_basename (((LPWIN32_FIND_DATA) dir->find_file_data)->cFileName));
831 gwin_rewinddir (DIR *dir)
835 g_return_if_fail (dir != NULL);
837 if (!FindClose ((HANDLE) dir->find_file_handle))
838 g_warning ("gwin_rewinddir(): FindClose() failed\n");
840 mask = g_strdup_printf ("%s\\*", dir->dir_name);
841 dir->find_file_handle = (guint) FindFirstFile (mask,
842 (LPWIN32_FIND_DATA) dir->find_file_data);
845 if (dir->find_file_handle == (guint) INVALID_HANDLE_VALUE)
847 int error = GetLastError ();
856 dir->just_opened = TRUE;
860 gwin_closedir (DIR *dir)
862 g_return_val_if_fail (dir != NULL, -1);
864 if (!FindClose ((HANDLE) dir->find_file_handle))
866 int error = GetLastError ();
871 errno = EIO; return -1;
875 g_free (dir->dir_name);
876 g_free (dir->find_file_data);
882 #endif /* _MSC_VER */
884 #endif /* NATIVE_WIN32 */