/* GLIB - Library of useful routines for C programming

 * Copyright (C) 1995-1998  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/. 

 */

#include "config.h"

#include "ggettext.h"

#include "glibintl.h"

#include "glib-private.h"

#include "galloca.h"

#include "gthread.h"

#include "gmem.h"

#ifdef G_OS_WIN32

#include "gwin32.h"

#include "gfileutils.h"

#include "gstrfuncs.h"

#include "glib-init.h"

#endif

#include <string.h>

#include <locale.h>

#include <libintl.h>

#ifdef G_OS_WIN32

/**

 * _glib_get_locale_dir:

 *

 * Return the path to the share\locale or lib\locale subfolder of the

 * GLib installation folder. The path is in the system codepage. We

 * have to use system codepage as bindtextdomain() doesn't have a

 * UTF-8 interface.

 */

gchar *

_glib_get_locale_dir (void)

{

  gchar *install_dir = NULL, *locale_dir;

  gchar *retval = NULL;

  if (glib_dll != NULL)

    install_dir = g_win32_get_package_installation_directory_of_module (glib_dll);

  if (install_dir)

    {

      /*

       * Append "/share/locale" or "/lib/locale" depending on whether

       * autoconfigury detected GNU gettext or not.

       */

      const char *p = GLIB_LOCALE_DIR + strlen (GLIB_LOCALE_DIR);

      while (*--p != '/')

	;

      while (*--p != '/')

	;

      locale_dir = g_build_filename (install_dir, p, NULL);

      retval = g_win32_locale_filename_from_utf8 (locale_dir);

      g_free (install_dir);

      g_free (locale_dir);

    }

  if (retval)

    return retval;

  else

    return g_strdup ("");

}

#undef GLIB_LOCALE_DIR

#endif /* G_OS_WIN32 */

static void

ensure_gettext_initialized (void)

{

  static gsize initialised;

  if (g_once_init_enter (&initialised))

    {

#ifdef G_OS_WIN32

      gchar *tmp = _glib_get_locale_dir ();

      bindtextdomain (GETTEXT_PACKAGE, tmp);

      g_free (tmp);

#else

      bindtextdomain (GETTEXT_PACKAGE, GLIB_LOCALE_DIR);

#endif

#    ifdef HAVE_BIND_TEXTDOMAIN_CODESET

      bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");

#    endif

      g_once_init_leave (&initialised, TRUE);

    }

}

/**

 * glib_gettext:

 * @str: The string to be translated

 *

 * Returns the translated string from the glib translations.

 * This is an internal function and should only be used by

 * the internals of glib (such as libgio).

 *

 * Returns: the transation of @str to the current locale

 */

const gchar *

glib_gettext (const gchar *str)

{

  ensure_gettext_initialized ();

  return g_dgettext (GETTEXT_PACKAGE, str);

}

/**

 * glib_pgettext:

 * @msgctxtid: a combined message context and message id, separated

 *   by a \004 character

 * @msgidoffset: the offset of the message id in @msgctxid

 *

 * This function is a variant of glib_gettext() which supports

 * a disambiguating message context. See g_dpgettext() for full

 * details.

 *

 * This is an internal function and should only be used by

 * the internals of glib (such as libgio).

 *

 * Returns: the translation of @str to the current locale

 */

const gchar *

glib_pgettext (const gchar *msgctxtid,

               gsize        msgidoffset)

{

  ensure_gettext_initialized ();

  return g_dpgettext (GETTEXT_PACKAGE, msgctxtid, msgidoffset);

}

/**

 * g_strip_context:

 * @msgid: a string

 * @msgval: another string

 *

 * An auxiliary function for gettext() support (see Q_()).

 *

 * Returns: @msgval, unless @msgval is identical to @msgid

 *     and contains a '|' character, in which case a pointer to

 *     the substring of msgid after the first '|' character is returned.

 *

 * Since: 2.4

 */

const gchar *

g_strip_context (const gchar *msgid,

                 const gchar *msgval)

{

  if (msgval == msgid)

    {

      const char *c = strchr (msgid, '|');

      if (c != NULL)

        return c + 1;

    }

  return msgval;

}

/**

 * g_dpgettext:

 * @domain: (nullable): the translation domain to use, or %NULL to use

 *   the domain set with textdomain()

 * @msgctxtid: a combined message context and message id, separated

 *   by a \004 character

 * @msgidoffset: the offset of the message id in @msgctxid

 *

 * This function is a variant of g_dgettext() which supports

 * a disambiguating message context. GNU gettext uses the

 * '\004' character to separate the message context and

 * message id in @msgctxtid.

 * If 0 is passed as @msgidoffset, this function will fall back to

 * trying to use the deprecated convention of using "|" as a separation

 * character.

 *

 * This uses g_dgettext() internally. See that functions for differences

 * with dgettext() proper.

 *

 * Applications should normally not use this function directly,

 * but use the C_() macro for translations with context.

 *

 * Returns: The translated string

 *

 * Since: 2.16

 */

const gchar *

g_dpgettext (const gchar *domain,

             const gchar *msgctxtid,

             gsize        msgidoffset)

{

  const gchar *translation;

  gchar *sep;

  translation = g_dgettext (domain, msgctxtid);

  if (translation == msgctxtid)

    {

      if (msgidoffset > 0)

        return msgctxtid + msgidoffset;

      sep = strchr (msgctxtid, '|');

      if (sep)

        {

          /* try with '\004' instead of '|', in case

           * xgettext -kQ_:1g was used

           */

          gchar *tmp = g_alloca (strlen (msgctxtid) + 1);

          strcpy (tmp, msgctxtid);

          tmp[sep - msgctxtid] = '\004';

          translation = g_dgettext (domain, tmp);

          if (translation == tmp)

            return sep + 1;

        }

    }

  return translation;

}

/* This function is taken from gettext.h

 * GNU gettext uses '\004' to separate context and msgid in .mo files.

 */

/**

 * g_dpgettext2:

 * @domain: (nullable): the translation domain to use, or %NULL to use

 *   the domain set with textdomain()

 * @context: the message context

 * @msgid: the message

 *

 * This function is a variant of g_dgettext() which supports

 * a disambiguating message context. GNU gettext uses the

 * '\004' character to separate the message context and

 * message id in @msgctxtid.

 *

 * This uses g_dgettext() internally. See that functions for differences

 * with dgettext() proper.

 *

 * This function differs from C_() in that it is not a macro and

 * thus you may use non-string-literals as context and msgid arguments.

 *

 * Returns: The translated string

 *

 * Since: 2.18

 */

const gchar *

g_dpgettext2 (const gchar *domain,

              const gchar *msgctxt,

              const gchar *msgid)

{

  size_t msgctxt_len = strlen (msgctxt) + 1;

  size_t msgid_len = strlen (msgid) + 1;

  const char *translation;

  char* msg_ctxt_id;

  msg_ctxt_id = g_alloca (msgctxt_len + msgid_len);

  memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);

  msg_ctxt_id[msgctxt_len - 1] = '\004';

  memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);

  translation = g_dgettext (domain, msg_ctxt_id);

  if (translation == msg_ctxt_id)

    {

      /* try the old way of doing message contexts, too */

      msg_ctxt_id[msgctxt_len - 1] = '|';

      translation = g_dgettext (domain, msg_ctxt_id);

      if (translation == msg_ctxt_id)

        return msgid;

    }

  return translation;

}

static gboolean

_g_dgettext_should_translate (void)

{

  static gsize translate = 0;

  enum {

    SHOULD_TRANSLATE = 1,

    SHOULD_NOT_TRANSLATE = 2

  };

  if (G_UNLIKELY (g_once_init_enter (&translate)))

    {

      gboolean should_translate = TRUE;

      const char *default_domain     = textdomain (NULL);

      const char *translator_comment = gettext ("");

#ifndef G_OS_WIN32

      const char *translate_locale   = setlocale (LC_MESSAGES, NULL);

#else

      const char *translate_locale   = g_win32_getlocale ();

#endif

      /* We should NOT translate only if all the following hold:

       *   - user has called textdomain() and set textdomain to non-default

       *   - default domain has no translations

       *   - locale does not start with "en_" and is not "C"

       *

       * Rationale:

       *   - If text domain is still the default domain, maybe user calls

       *     it later. Continue with old behavior of translating.

       *   - If locale starts with "en_", we can continue using the

       *     translations even if the app doesn't have translations for

       *     this locale.  That is, en_UK and en_CA for example.

       *   - If locale is "C", maybe user calls setlocale(LC_ALL,"") later.

       *     Continue with old behavior of translating.

       */

      if (!default_domain || !translator_comment || !translate_locale ||

          (0 != strcmp (default_domain, "messages") &&

          '\0' == *translator_comment &&

          0 != strncmp (translate_locale, "en_", 3) &&

          0 != strcmp (translate_locale, "C")))

        should_translate = FALSE;

      g_once_init_leave (&translate,

                         should_translate ?

                         SHOULD_TRANSLATE :

                         SHOULD_NOT_TRANSLATE);

    }

  return translate == SHOULD_TRANSLATE;

}

/**

 * g_dgettext:

 * @domain: (nullable): the translation domain to use, or %NULL to use

 *   the domain set with textdomain()

 * @msgid: message to translate

 *

 * This function is a wrapper of dgettext() which does not translate

 * the message if the default domain as set with textdomain() has no

 * translations for the current locale.

 *

 * The advantage of using this function over dgettext() proper is that

 * libraries using this function (like GTK+) will not use translations

 * if the application using the library does not have translations for

 * the current locale.  This results in a consistent English-only

 * interface instead of one having partial translations.  For this

 * feature to work, the call to textdomain() and setlocale() should

 * precede any g_dgettext() invocations.  For GTK+, it means calling

 * textdomain() before gtk_init or its variants.

 *

 * This function disables translations if and only if upon its first

 * call all the following conditions hold:

 * 

 * - @domain is not %NULL

 *

 * - textdomain() has been called to set a default text domain

 *

 * - there is no translations available for the default text domain

 *   and the current locale

 *

 * - current locale is not "C" or any English locales (those

 *   starting with "en_")

 *

 * Note that this behavior may not be desired for example if an application

 * has its untranslated messages in a language other than English. In those

 * cases the application should call textdomain() after initializing GTK+.

 *

 * Applications should normally not use this function directly,

 * but use the _() macro for translations.

 *

 * Returns: The translated string

 *

 * Since: 2.18

 */

const gchar *

g_dgettext (const gchar *domain,

            const gchar *msgid)

{

  if (domain && G_UNLIKELY (!_g_dgettext_should_translate ()))

    return msgid;

  return dgettext (domain, msgid);

}

/**

 * g_dcgettext:

 * @domain: (nullable): the translation domain to use, or %NULL to use

 *   the domain set with textdomain()

 * @msgid: message to translate

 * @category: a locale category

 *

 * This is a variant of g_dgettext() that allows specifying a locale

 * category instead of always using `LC_MESSAGES`. See g_dgettext() for

 * more information about how this functions differs from calling

 * dcgettext() directly.

 *

 * Returns: the translated string for the given locale category

 *

 * Since: 2.26

 */

const gchar *

g_dcgettext (const gchar *domain,

             const gchar *msgid,

             gint         category)

{

  if (domain && G_UNLIKELY (!_g_dgettext_should_translate ()))

    return msgid;

  return dcgettext (domain, msgid, category);

}

/**

 * g_dngettext:

 * @domain: (nullable): the translation domain to use, or %NULL to use

 *   the domain set with textdomain()

 * @msgid: message to translate

 * @msgid_plural: plural form of the message

 * @n: the quantity for which translation is needed

 *

 * This function is a wrapper of dngettext() which does not translate

 * the message if the default domain as set with textdomain() has no

 * translations for the current locale.

 *

 * See g_dgettext() for details of how this differs from dngettext()

 * proper.

 *

 * Returns: The translated string

 *

 * Since: 2.18

 */

const gchar *

g_dngettext (const gchar *domain,

             const gchar *msgid,

             const gchar *msgid_plural,

             gulong       n)

{

  if (domain && G_UNLIKELY (!_g_dgettext_should_translate ()))

    return n == 1 ? msgid : msgid_plural;

  return dngettext (domain, msgid, msgid_plural, n);

}

/**

 * SECTION:i18n

 * @title: Internationalization

 * @short_description: gettext support macros

 * @see_also: the gettext manual

 *

 * GLib doesn't force any particular localization method upon its users.

 * But since GLib itself is localized using the gettext() mechanism, it seems

 * natural to offer the de-facto standard gettext() support macros in an

 * easy-to-use form.

 *

 * In order to use these macros in an application, you must include

 * `<glib/gi18n.h>`. For use in a library, you must include

 * `<glib/gi18n-lib.h>`

 * after defining the %GETTEXT_PACKAGE macro suitably for your library:

 * |[

 * #define GETTEXT_PACKAGE "gtk20"

 * #include <glib/gi18n-lib.h>

 * ]|

 * For an application, note that you also have to call bindtextdomain(),

 * bind_textdomain_codeset(), textdomain() and setlocale() early on in your

 * main() to make gettext() work. For example:

 * |[

 * #include <glib/gi18n.h>

 * #include <locale.h>

 *

 * int

 * main (int argc, char **argv)

 * {

 *   setlocale (LC_ALL, "");

 *   bindtextdomain (GETTEXT_PACKAGE, DATADIR "/locale");

 *   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");

 *   textdomain (GETTEXT_PACKAGE);

 *

 *   // Rest of your application.

 * }

 * ]|

 * where `DATADIR` is as typically provided by automake.

 *

 * For a library, you only have to call bindtextdomain() and

 * bind_textdomain_codeset() in your initialization function. If your library

 * doesn't have an initialization function, you can call the functions before

 * the first translated message.

 *

 * The

 * [gettext manual](http://www.gnu.org/software/gettext/manual/gettext.html#Maintainers)

 * covers details of how to integrate gettext into a project’s build system and

 * workflow.

 */

/**

 * _:

 * @String: the string to be translated

 *

 * Marks a string for translation, gets replaced with the translated string

 * at runtime.

 *

 * Since: 2.4

 */

/**

 * Q_:

 * @String: the string to be translated, with a '|'-separated prefix

 *     which must not be translated

 *

 * Like _(), but handles context in message ids. This has the advantage

 * that the string can be adorned with a prefix to guarantee uniqueness

 * and provide context to the translator.

 *

 * One use case given in the gettext manual is GUI translation, where one

 * could e.g. disambiguate two "Open" menu entries as "File|Open" and

 * "Printer|Open". Another use case is the string "Russian" which may

 * have to be translated differently depending on whether it's the name

 * of a character set or a language. This could be solved by using

 * "charset|Russian" and "language|Russian".

 *

 * See the C_() macro for a different way to mark up translatable strings

 * with context.

 *

 * If you are using the Q_() macro, you need to make sure that you pass

 * `--keyword=Q_` to xgettext when extracting messages.

 * If you are using GNU gettext >= 0.15, you can also use

 * `--keyword=Q_:1g` to let xgettext split the context

 * string off into a msgctxt line in the po file.

 *

 * Returns: the translated message

 *

 * Since: 2.4

 */

/**

 * C_:

 * @Context: a message context, must be a string literal

 * @String: a message id, must be a string literal

 *

 * Uses gettext to get the translation for @String. @Context is

 * used as a context. This is mainly useful for short strings which

 * may need different translations, depending on the context in which

 * they are used.

 * |[

 * label1 = C_("Navigation", "Back");

 * label2 = C_("Body part", "Back");

 * ]|

 *

 * If you are using the C_() macro, you need to make sure that you pass

 * `--keyword=C_:1c,2` to xgettext when extracting messages.

 * Note that this only works with GNU gettext >= 0.15.

 *

 * Returns: the translated message

 *

 * Since: 2.16

 */

/**

 * N_:

 * @String: the string to be translated

 *

 * Only marks a string for translation. This is useful in situations

 * where the translated strings can't be directly used, e.g. in string

 * array initializers. To get the translated string, call gettext()

 * at runtime.

 * |[

 * {

 *   static const char *messages[] = {

 *     N_("some very meaningful message"),

 *     N_("and another one")

 *   };

 *   const char *string;

 *   ...

 *   string

 *     = index > 1 ? _("a default message") : gettext (messages[index]);

 *

 *   fputs (string);

 *   ...

 * }

 * ]|

 *

 * Since: 2.4

 */

/**

 * NC_:

 * @Context: a message context, must be a string literal

 * @String: a message id, must be a string literal

 *

 * Only marks a string for translation, with context.

 * This is useful in situations where the translated strings can't

 * be directly used, e.g. in string array initializers. To get the

 * translated string, you should call g_dpgettext2() at runtime.

 *

 * |[

 * {

 *   static const char *messages[] = {

 *     NC_("some context", "some very meaningful message"),

 *     NC_("some context", "and another one")

 *   };

 *   const char *string;

 *   ...

 *   string

 *     = index > 1 ? g_dpgettext2 (NULL, "some context", "a default message")

 *                 : g_dpgettext2 (NULL, "some context", messages[index]);

 *

 *   fputs (string);

 *   ...

 * }

 * ]|

 *

 * If you are using the NC_() macro, you need to make sure that you pass

 * `--keyword=NC_:1c,2` to xgettext when extracting messages.

 * Note that this only works with GNU gettext >= 0.15. Intltool has support

 * for the NC_() macro since version 0.40.1.

 *

 * Since: 2.18

 */