/* GLIB - Library of useful routines for C programming * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GLib Team and others 1997-2000. See the AUTHORS * file for a list of people on the GLib Team. See the ChangeLog * files for a list of changes. These files are distributed with * GLib at ftp://ftp.gtk.org/pub/gtk/. */ #ifndef __G_UTILS_H__ #define __G_UTILS_H__ #include #include G_BEGIN_DECLS #ifdef G_OS_WIN32 /* On Win32, the canonical directory separator is the backslash, and * the search path separator is the semicolon. Note that also the * (forward) slash works as directory separator. */ #define G_DIR_SEPARATOR '\\' #define G_DIR_SEPARATOR_S "\\" #define G_IS_DIR_SEPARATOR(c) ((c) == G_DIR_SEPARATOR || (c) == '/') #define G_SEARCHPATH_SEPARATOR ';' #define G_SEARCHPATH_SEPARATOR_S ";" #else /* !G_OS_WIN32 */ /* Unix */ #define G_DIR_SEPARATOR '/' #define G_DIR_SEPARATOR_S "/" #define G_IS_DIR_SEPARATOR(c) ((c) == G_DIR_SEPARATOR) #define G_SEARCHPATH_SEPARATOR ':' #define G_SEARCHPATH_SEPARATOR_S ":" #endif /* !G_OS_WIN32 */ /* Define G_VA_COPY() to do the right thing for copying va_list variables. * glibconfig.h may have already defined G_VA_COPY as va_copy or __va_copy. */ #if !defined (G_VA_COPY) # if defined (__GNUC__) && defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32)) # define G_VA_COPY(ap1, ap2) (*(ap1) = *(ap2)) # elif defined (G_VA_COPY_AS_ARRAY) # define G_VA_COPY(ap1, ap2) g_memmove ((ap1), (ap2), sizeof (va_list)) # else /* va_list is a pointer */ # define G_VA_COPY(ap1, ap2) ((ap1) = (ap2)) # endif /* va_list is a pointer */ #endif /* !G_VA_COPY */ /* inlining hassle. for compilers that don't allow the `inline' keyword, * mostly because of strict ANSI C compliance or dumbness, we try to fall * back to either `__inline__' or `__inline'. * G_CAN_INLINE is defined in glibconfig.h if the compiler seems to be * actually *capable* to do function inlining, in which case inline * function bodies do make sense. we also define G_INLINE_FUNC to properly * export the function prototypes if no inlining can be performed. * inline function bodies have to be special cased with G_CAN_INLINE and a * .c file specific macro to allow one compiled instance with extern linkage * of the functions by defining G_IMPLEMENT_INLINES and the .c file macro. */ #if defined (G_HAVE_INLINE) && defined (__GNUC__) && defined (__STRICT_ANSI__) # undef inline # define inline __inline__ #elif !defined (G_HAVE_INLINE) # undef inline # if defined (G_HAVE___INLINE__) # define inline __inline__ # elif defined (G_HAVE___INLINE) # define inline __inline # else /* !inline && !__inline__ && !__inline */ # define inline /* don't inline, then */ # endif #endif #ifdef G_IMPLEMENT_INLINES # define G_INLINE_FUNC # undef G_CAN_INLINE #elif defined (__GNUC__) # define G_INLINE_FUNC extern inline #elif defined (G_CAN_INLINE) # define G_INLINE_FUNC static inline #else /* can't inline */ # define G_INLINE_FUNC #endif /* !G_INLINE_FUNC */ /* Retrive static string info */ #ifdef G_OS_WIN32 #define g_get_user_name g_get_user_name_utf8 #define g_get_real_name g_get_real_name_utf8 #define g_get_home_dir g_get_home_dir_utf8 #define g_get_tmp_dir g_get_tmp_dir_utf8 #endif G_CONST_RETURN gchar* g_get_user_name (void); G_CONST_RETURN gchar* g_get_real_name (void); G_CONST_RETURN gchar* g_get_home_dir (void); G_CONST_RETURN gchar* g_get_tmp_dir (void); G_CONST_RETURN gchar* g_get_host_name (void); gchar* g_get_prgname (void); void g_set_prgname (const gchar *prgname); G_CONST_RETURN gchar* g_get_application_name (void); void g_set_application_name (const gchar *application_name); G_CONST_RETURN gchar* g_get_user_data_dir (void); G_CONST_RETURN gchar* g_get_user_config_dir (void); G_CONST_RETURN gchar* g_get_user_cache_dir (void); G_CONST_RETURN gchar* G_CONST_RETURN * g_get_system_data_dirs (void); #ifdef G_OS_WIN32 G_CONST_RETURN gchar* G_CONST_RETURN * g_win32_get_system_data_dirs_for_module (gconstpointer address); #endif #if defined (G_OS_WIN32) && defined (G_CAN_INLINE) && !defined (__cplusplus) static inline G_CONST_RETURN gchar * G_CONST_RETURN * g_win32_get_system_data_dirs (void) { return g_win32_get_system_data_dirs_for_module ((gconstpointer) &g_win32_get_system_data_dirs); } #define g_get_system_data_dirs g_win32_get_system_data_dirs #endif G_CONST_RETURN gchar* G_CONST_RETURN * g_get_system_config_dirs (void); G_CONST_RETURN gchar* G_CONST_RETURN * g_get_language_names (void); typedef struct _GDebugKey GDebugKey; struct _GDebugKey { gchar *key; guint value; }; /* Miscellaneous utility functions */ guint g_parse_debug_string (const gchar *string, const GDebugKey *keys, guint nkeys); gint g_snprintf (gchar *string, gulong n, gchar const *format, ...) G_GNUC_PRINTF (3, 4); gint g_vsnprintf (gchar *string, gulong n, gchar const *format, va_list args); /* Check if a file name is an absolute path */ gboolean g_path_is_absolute (const gchar *file_name); /* In case of absolute paths, skip the root part */ G_CONST_RETURN gchar* g_path_skip_root (const gchar *file_name); #ifndef G_DISABLE_DEPRECATED /* These two functions are deprecated and will be removed in the next * major release of GLib. Use g_path_get_dirname/g_path_get_basename * instead. Whatch out! The string returned by g_path_get_basename * must be g_freed, while the string returned by g_basename must not.*/ G_CONST_RETURN gchar* g_basename (const gchar *file_name); #define g_dirname g_path_get_dirname #endif /* G_DISABLE_DEPRECATED */ #ifdef G_OS_WIN32 #define g_get_current_dir g_get_current_dir_utf8 #endif /* The returned strings are newly allocated with g_malloc() */ gchar* g_get_current_dir (void); gchar* g_path_get_basename (const gchar *file_name) G_GNUC_MALLOC; gchar* g_path_get_dirname (const gchar *file_name) G_GNUC_MALLOC; /* Set the pointer at the specified location to NULL */ void g_nullify_pointer (gpointer *nullify_location); /* return the environment string for the variable. The returned memory * must not be freed. */ #ifdef G_OS_WIN32 #define g_getenv g_getenv_utf8 #define g_setenv g_setenv_utf8 #define g_unsetenv g_unsetenv_utf8 #define g_find_program_in_path g_find_program_in_path_utf8 #endif G_CONST_RETURN gchar* g_getenv (const gchar *variable); gboolean g_setenv (const gchar *variable, const gchar *value, gboolean overwrite); void g_unsetenv (const gchar *variable); gchar** g_listenv (void); /* we try to provide a usefull equivalent for ATEXIT if it is * not defined, but use is actually abandoned. people should * use g_atexit() instead. */ typedef void (*GVoidFunc) (void); #ifndef ATEXIT # define ATEXIT(proc) g_ATEXIT(proc) #else # define G_NATIVE_ATEXIT #endif /* ATEXIT */ /* we use a GLib function as a replacement for ATEXIT, so * the programmer is not required to check the return value * (if there is any in the implementation) and doesn't encounter * missing include files. */ void g_atexit (GVoidFunc func); #ifdef G_OS_WIN32 /* It's a bad idea to wrap atexit() on Windows. If the GLib DLL calls * atexit(), the function will be called when the GLib DLL is detached * from the program, which is not what the caller wants. The caller * wants the function to be called when it *itself* exits (or is * detached, in case the caller, too, is a DLL). */ int atexit (void (*)(void)); #define g_atexit(func) atexit(func) #endif /* Look for an executable in PATH, following execvp() rules */ gchar* g_find_program_in_path (const gchar *program); /* Bit tests */ G_INLINE_FUNC gint g_bit_nth_lsf (gulong mask, gint nth_bit); G_INLINE_FUNC gint g_bit_nth_msf (gulong mask, gint nth_bit); G_INLINE_FUNC guint g_bit_storage (gulong number); /* Trash Stacks * elements need to be >= sizeof (gpointer) */ typedef struct _GTrashStack GTrashStack; struct _GTrashStack { GTrashStack *next; }; G_INLINE_FUNC void g_trash_stack_push (GTrashStack **stack_p, gpointer data_p); G_INLINE_FUNC gpointer g_trash_stack_pop (GTrashStack **stack_p); G_INLINE_FUNC gpointer g_trash_stack_peek (GTrashStack **stack_p); G_INLINE_FUNC guint g_trash_stack_height (GTrashStack **stack_p); /* inline function implementations */ #if defined (G_CAN_INLINE) || defined (__G_UTILS_C__) G_INLINE_FUNC gint g_bit_nth_lsf (gulong mask, gint nth_bit) { do { nth_bit++; if (mask & (1UL << nth_bit)) return nth_bit; } while (nth_bit < ((GLIB_SIZEOF_LONG * 8) - 1)); return -1; } G_INLINE_FUNC gint g_bit_nth_msf (gulong mask, gint nth_bit) { if (nth_bit < 0) nth_bit = GLIB_SIZEOF_LONG * 8; do { nth_bit--; if (mask & (1UL << nth_bit)) return nth_bit; } while (nth_bit > 0); return -1; } G_INLINE_FUNC guint g_bit_storage (gulong number) { register guint n_bits = 0; do { n_bits++; number >>= 1; } while (number); return n_bits; } G_INLINE_FUNC void g_trash_stack_push (GTrashStack **stack_p, gpointer data_p) { GTrashStack *data = (GTrashStack *) data_p; data->next = *stack_p; *stack_p = data; } G_INLINE_FUNC gpointer g_trash_stack_pop (GTrashStack **stack_p) { GTrashStack *data; data = *stack_p; if (data) { *stack_p = data->next; /* NULLify private pointer here, most platforms store NULL as * subsequent 0 bytes */ data->next = NULL; } return data; } G_INLINE_FUNC gpointer g_trash_stack_peek (GTrashStack **stack_p) { GTrashStack *data; data = *stack_p; return data; } G_INLINE_FUNC guint g_trash_stack_height (GTrashStack **stack_p) { GTrashStack *data; guint i = 0; for (data = *stack_p; data; data = data->next) i++; return i; } #endif /* G_CAN_INLINE || __G_UTILS_C__ */ /* Glib version. * we prefix variable declarations so they can * properly get exported in windows dlls. */ GLIB_VAR const guint glib_major_version; GLIB_VAR const guint glib_minor_version; GLIB_VAR const guint glib_micro_version; GLIB_VAR const guint glib_interface_age; GLIB_VAR const guint glib_binary_age; const gchar * glib_check_version (guint required_major, guint required_minor, guint required_micro); #define GLIB_CHECK_VERSION(major,minor,micro) \ (GLIB_MAJOR_VERSION > (major) || \ (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION > (minor)) || \ (GLIB_MAJOR_VERSION == (major) && GLIB_MINOR_VERSION == (minor) && \ GLIB_MICRO_VERSION >= (micro))) G_END_DECLS /* * On Windows, this macro defines a DllMain function that stores the * actual DLL name that the code being compiled will be included in. * STATIC should be empty or 'static'. DLL_NAME is the name of the * (pointer to the) char array where the DLL name will be stored. If * this is used, you must also include . If you need a more complex * DLL entry point function, you cannot use this. * * On non-Windows platforms, expands to nothing. */ #ifndef G_PLATFORM_WIN32 # define G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name) #else # define G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name) \ static char *dll_name; \ \ BOOL WINAPI \ DllMain (HINSTANCE hinstDLL, \ DWORD fdwReason, \ LPVOID lpvReserved) \ { \ wchar_t wcbfr[1000]; \ char cpbfr[1000]; \ char *tem; \ switch (fdwReason) \ { \ case DLL_PROCESS_ATTACH: \ if (GetVersion () < 0x80000000) \ { \ GetModuleFileNameW ((HMODULE) hinstDLL, wcbfr, G_N_ELEMENTS (wcbfr)); \ tem = g_utf16_to_utf8 (wcbfr, -1, NULL, NULL, NULL); \ dll_name = g_path_get_basename (tem); \ g_free (tem); \ } \ else \ { \ GetModuleFileNameA ((HMODULE) hinstDLL, cpbfr, G_N_ELEMENTS (cpbfr)); \ tem = g_locale_to_utf8 (cpbfr, -1, NULL, NULL, NULL); \ dll_name = g_path_get_basename (tem); \ g_free (tem); \ } \ break; \ } \ \ return TRUE; \ } #endif /* G_PLATFORM_WIN32 */ #endif /* __G_UTILS_H__ */