/* GLIB - Library of useful routines for C programming

 * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald

 * Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 *

 * 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 <_ansi.h>

#include <glib/gtypes.h>

#include <stdarg.h>

G_BEGIN_DECLS

#if defined(G_OS_WIN32) || defined(__SYMBIAN32__)

/* 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__) 

#	ifdef __SYMBIAN32__

#  		define G_INLINE_FUNC extern __inline

#	else

#  		define G_INLINE_FUNC extern inline

#	endif

#elif defined (G_CAN_INLINE) 

#	ifdef __SYMBIAN32__

#  		define G_INLINE_FUNC static __inline

#	else

#  		define G_INLINE_FUNC static inline

#	endif

#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

IMPORT_C G_CONST_RETURN gchar* g_get_user_name        (void);

IMPORT_C G_CONST_RETURN gchar* g_get_real_name        (void);

IMPORT_C G_CONST_RETURN gchar* g_get_home_dir         (void);

IMPORT_C G_CONST_RETURN gchar* g_get_tmp_dir          (void);

IMPORT_C G_CONST_RETURN gchar* g_get_host_name	     (void);

IMPORT_C gchar*                g_get_prgname          (void);

IMPORT_C void                  g_set_prgname          (const gchar *prgname);

IMPORT_C G_CONST_RETURN gchar* g_get_application_name (void);

IMPORT_C void                  g_set_application_name (const gchar *application_name);

IMPORT_C G_CONST_RETURN gchar*    g_get_user_data_dir      (void);

IMPORT_C G_CONST_RETURN gchar*    g_get_user_config_dir    (void);

IMPORT_C G_CONST_RETURN gchar*    g_get_user_cache_dir     (void);

IMPORT_C 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

IMPORT_C G_CONST_RETURN gchar* G_CONST_RETURN * g_get_system_config_dirs (void);

IMPORT_C 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

 */

IMPORT_C guint                 g_parse_debug_string (const gchar     *string,

					    const GDebugKey *keys,

					    guint            nkeys);

IMPORT_C gint                  g_snprintf           (gchar       *string,

					    gulong       n,

					    gchar const *format,

					    ...) G_GNUC_PRINTF (3, 4);

IMPORT_C gint                  g_vsnprintf          (gchar       *string,

					    gulong       n,

					    gchar const *format,

					    va_list      args);

/* Check if a file name is an absolute path */

IMPORT_C gboolean              g_path_is_absolute   (const gchar *file_name);

/* In case of absolute paths, skip the root part */

IMPORT_C 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.*/

IMPORT_C 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() */

IMPORT_C gchar*                g_get_current_dir    (void);

IMPORT_C gchar*                g_path_get_basename  (const gchar *file_name) G_GNUC_MALLOC;

IMPORT_C gchar*                g_path_get_dirname   (const gchar *file_name) G_GNUC_MALLOC;

/* Set the pointer at the specified location to NULL */

IMPORT_C 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

IMPORT_C G_CONST_RETURN gchar* g_getenv             (const gchar *variable);

IMPORT_C gboolean              g_setenv             (const gchar *variable,

					    const gchar *value,

					    gboolean     overwrite);

IMPORT_C void                  g_unsetenv           (const gchar *variable);

IMPORT_C gchar**               g_listenv            (void);

const gchar*	     _g_getenv_nomalloc	   (const gchar	*variable,

					    gchar        buffer[1024]);

/* 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.

 */

IMPORT_C 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 */

IMPORT_C 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;

#ifdef __SYMBIAN32__

IMPORT_C const  guint *_glib_major_version();

IMPORT_C const  guint *_glib_minor_version();

IMPORT_C const  guint *_glib_micro_version();

IMPORT_C const  guint *_glib_interface_age();

IMPORT_C const  guint *_glib_binary_age();

#endif /* __SYMBIAN32__ */

IMPORT_C 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 <windows.h>. 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__ */