/* 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 2.1 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, see <http://www.gnu.org/licenses/>.

 */

/*

 * 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__

#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)

#error "Only <glib.h> can be included directly."

#endif

#include <glib/gtypes.h>

#include <stdarg.h>

G_BEGIN_DECLS

/* 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)	  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 */

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_user_name        (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_real_name        (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_home_dir         (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_tmp_dir          (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_host_name	     (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_prgname          (void);

GLIB_AVAILABLE_IN_ALL

void                  g_set_prgname          (const gchar *prgname);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_application_name (void);

GLIB_AVAILABLE_IN_ALL

void                  g_set_application_name (const gchar *application_name);

GLIB_AVAILABLE_IN_ALL

void      g_reload_user_special_dirs_cache     (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_user_data_dir      (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_user_config_dir    (void);

GLIB_AVAILABLE_IN_ALL

const gchar *         g_get_user_cache_dir     (void);

GLIB_AVAILABLE_IN_ALL

const gchar * const * g_get_system_data_dirs   (void);

#ifdef G_OS_WIN32

/* This functions is not part of the public GLib API */

GLIB_AVAILABLE_IN_ALL

const gchar * const * g_win32_get_system_data_dirs_for_module (void (*address_of_function)(void));

#endif

#if defined (G_OS_WIN32) && defined (G_CAN_INLINE) && !defined (__cplusplus)

/* This function is not part of the public GLib API either. Just call

 * g_get_system_data_dirs() in your code, never mind that that is

 * actually a macro and you will in fact call this inline function.

 */

static inline const gchar * const *

_g_win32_get_system_data_dirs (void)

{

  return g_win32_get_system_data_dirs_for_module ((void (*)(void)) &_g_win32_get_system_data_dirs);

}

#define g_get_system_data_dirs _g_win32_get_system_data_dirs

#endif

GLIB_AVAILABLE_IN_ALL

const gchar * const * g_get_system_config_dirs (void);

GLIB_AVAILABLE_IN_ALL

const gchar * g_get_user_runtime_dir (void);

/**

 * GUserDirectory:

 * @G_USER_DIRECTORY_DESKTOP: the user's Desktop directory

 * @G_USER_DIRECTORY_DOCUMENTS: the user's Documents directory

 * @G_USER_DIRECTORY_DOWNLOAD: the user's Downloads directory

 * @G_USER_DIRECTORY_MUSIC: the user's Music directory

 * @G_USER_DIRECTORY_PICTURES: the user's Pictures directory

 * @G_USER_DIRECTORY_PUBLIC_SHARE: the user's shared directory

 * @G_USER_DIRECTORY_TEMPLATES: the user's Templates directory

 * @G_USER_DIRECTORY_VIDEOS: the user's Movies directory

 * @G_USER_N_DIRECTORIES: the number of enum values

 *

 * These are logical ids for special directories which are defined

 * depending on the platform used. You should use g_get_user_special_dir()

 * to retrieve the full path associated to the logical id.

 *

 * The #GUserDirectory enumeration can be extended at later date. Not

 * every platform has a directory for every logical id in this

 * enumeration.

 *

 * Since: 2.14

 */

typedef enum {

  G_USER_DIRECTORY_DESKTOP,

  G_USER_DIRECTORY_DOCUMENTS,

  G_USER_DIRECTORY_DOWNLOAD,

  G_USER_DIRECTORY_MUSIC,

  G_USER_DIRECTORY_PICTURES,

  G_USER_DIRECTORY_PUBLIC_SHARE,

  G_USER_DIRECTORY_TEMPLATES,

  G_USER_DIRECTORY_VIDEOS,

  G_USER_N_DIRECTORIES

} GUserDirectory;

GLIB_AVAILABLE_IN_ALL

const gchar * g_get_user_special_dir (GUserDirectory directory);

/**

 * GDebugKey:

 * @key: the string

 * @value: the flag

 *

 * Associates a string with a bit flag.

 * Used in g_parse_debug_string().

 */

typedef struct _GDebugKey GDebugKey;

struct _GDebugKey

{

  const gchar *key;

  guint	       value;

};

/* Miscellaneous utility functions

 */

GLIB_AVAILABLE_IN_ALL

guint                 g_parse_debug_string (const gchar     *string,

					    const GDebugKey *keys,

					    guint            nkeys);

GLIB_AVAILABLE_IN_ALL

gint                  g_snprintf           (gchar       *string,

					    gulong       n,

					    gchar const *format,

					    ...) G_GNUC_PRINTF (3, 4);

GLIB_AVAILABLE_IN_ALL

gint                  g_vsnprintf          (gchar       *string,

					    gulong       n,

					    gchar const *format,

					    va_list      args)

					    G_GNUC_PRINTF(3, 0);

GLIB_AVAILABLE_IN_ALL

void                  g_nullify_pointer    (gpointer    *nullify_location);

typedef enum

{

  G_FORMAT_SIZE_DEFAULT     = 0,

  G_FORMAT_SIZE_LONG_FORMAT = 1 << 0,

  G_FORMAT_SIZE_IEC_UNITS   = 1 << 1,

  G_FORMAT_SIZE_BITS        = 1 << 2

} GFormatSizeFlags;

GLIB_AVAILABLE_IN_2_30

gchar *g_format_size_full   (guint64          size,

                             GFormatSizeFlags flags);

GLIB_AVAILABLE_IN_2_30

gchar *g_format_size        (guint64          size);

GLIB_DEPRECATED_FOR(g_format_size)

gchar *g_format_size_for_display (goffset size);

#ifndef G_DISABLE_DEPRECATED

/**

 * GVoidFunc:

 *

 * Declares a type of function which takes no arguments

 * and has no return value. It is used to specify the type

 * function passed to g_atexit().

 */

typedef void (*GVoidFunc) (void);

#define ATEXIT(proc) g_ATEXIT(proc)

GLIB_DEPRECATED

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).

 */

#if (defined(__MINGW_H) && !defined(_STDLIB_H_)) || (defined(_MSC_VER) && !defined(_INC_STDLIB))

int atexit (void (*)(void));

#endif

#define g_atexit(func) atexit(func)

#endif

#endif

/* Look for an executable in PATH, following execvp() rules */

GLIB_AVAILABLE_IN_ALL

gchar*  g_find_program_in_path  (const gchar *program);

/* Bit tests

 *

 * These are defined in a convoluted way because we want the compiler to

 * be able to inline the code for performance reasons, but for

 * historical reasons, we must continue to provide non-inline versions

 * on our ABI.

 *

 * We define these as functions in gutils.c which are just implemented

 * as calls to the _impl() versions in order to preserve the ABI.

 */

#define g_bit_nth_lsf(mask, nth_bit) g_bit_nth_lsf_impl(mask, nth_bit)

#define g_bit_nth_msf(mask, nth_bit) g_bit_nth_msf_impl(mask, nth_bit)

#define g_bit_storage(number)        g_bit_storage_impl(number)

GLIB_AVAILABLE_IN_ALL

gint    (g_bit_nth_lsf)         (gulong mask,

                                 gint   nth_bit);

GLIB_AVAILABLE_IN_ALL

gint    (g_bit_nth_msf)         (gulong mask,

                                 gint   nth_bit);

GLIB_AVAILABLE_IN_ALL

guint   (g_bit_storage)         (gulong number);

static inline gint

g_bit_nth_lsf_impl (gulong mask,

                    gint   nth_bit)

{

  if (G_UNLIKELY (nth_bit < -1))

    nth_bit = -1;

  while (nth_bit < ((GLIB_SIZEOF_LONG * 8) - 1))

    {

      nth_bit++;

      if (mask & (1UL << nth_bit))

        return nth_bit;

    }

  return -1;

}

static inline gint

g_bit_nth_msf_impl (gulong mask,

                    gint   nth_bit)

{

  if (nth_bit < 0 || G_UNLIKELY (nth_bit > GLIB_SIZEOF_LONG * 8))

    nth_bit = GLIB_SIZEOF_LONG * 8;

  while (nth_bit > 0)

    {

      nth_bit--;

      if (mask & (1UL << nth_bit))

        return nth_bit;

    }

  return -1;

}

static inline guint

g_bit_storage_impl (gulong number)

{

#if defined(__GNUC__) && (__GNUC__ >= 4) && defined(__OPTIMIZE__)

  return G_LIKELY (number) ?

           ((GLIB_SIZEOF_LONG * 8U - 1) ^ (guint) __builtin_clzl(number)) + 1 : 1;

#else

  guint n_bits = 0;

  do

    {

      n_bits++;

      number >>= 1;

    }

  while (number);

  return n_bits;

#endif

}

/* Crashes the program. */

#if GLIB_VERSION_MAX_ALLOWED >= GLIB_VERSION_2_50

#ifndef G_OS_WIN32

#  include <stdlib.h>

#  define g_abort() abort ()

#else

GLIB_AVAILABLE_IN_2_50

void g_abort (void) G_GNUC_NORETURN G_ANALYZER_NORETURN;

#endif

#endif

#ifndef G_DISABLE_DEPRECATED

/*

 * This macro is deprecated. This DllMain() is too complex. It is

 * recommended to write an explicit minimal DLlMain() that just saves

 * the handle to the DLL and then use that handle instead, for

 * instance passing it to

 * g_win32_get_package_installation_directory_of_module().

 *

 * 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 *tem;								\

  switch (fdwReason)							\

    {									\

    case DLL_PROCESS_ATTACH:						\

      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);							\

      break;								\

    }									\

									\

  return TRUE;								\

}

#endif	/* !G_DISABLE_DEPRECATED */

#endif /* G_PLATFORM_WIN32 */

G_END_DECLS

#endif /* __G_UTILS_H__ */