/* Localization of proper names.
  Copyright (C) 2006 Free Software Foundation, Inc.
  Written by Bruno Haible <[email protected]>, 2006.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2, or (at your option)
  any later version.

  This program 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 General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software Foundation,
  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#include <config.h>

/* Specification.  */
#include "propername.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_ICONV
# include <iconv.h>
#endif

#include "localcharset.h"
#include "c-strcase.h"
#include "xstriconv.h"
#include "c-strstr.h"
#include "strstr.h"
#include "xalloc.h"
#include "gettext.h"


/* Return the localization of NAME.  NAME is written in ASCII.  */

const char *
proper_name (const char *name)
{
 /* See whether there is a translation.   */
 const char *translation = gettext (name);

 if (translation != name)
   {
     /* See whether the translation contains the original name.  */
     if (strstr (translation, name) != NULL)
       return translation;
     else
       {
         /* Return "TRANSLATION (NAME)".  */
         char *result =
           (char *) xmalloc (strlen (translation) + 2 + strlen (name) + 1 + 1);

         sprintf (result, "%s (%s)", translation, name);
         return result;
       }
   }
 else
   return name;
}

/* Return the localization of a name whose original writing is not ASCII.
  NAME_UTF8 is the real name, written in UTF-8 with octal or hexadecimal
  escape sequences.  NAME_ASCII is a fallback written only with ASCII
  characters.  */

const char *
proper_name_utf8 (const char *name_ascii, const char *name_utf8)
{
 /* See whether there is a translation.   */
 const char *translation = gettext (name_ascii);

 /* Try to convert NAME_UTF8 to the locale encoding.  */
 const char *locale_code = locale_charset ();
 char *alloc_name_converted = NULL;
 char *alloc_name_converted_translit = NULL;
 const char *name_converted = NULL;
 const char *name_converted_translit = NULL;
 const char *name;

 if (c_strcasecmp (locale_code, "UTF-8") != 0)
   {
#if HAVE_ICONV
     name_converted = alloc_name_converted =
       xstr_iconv (name_utf8, "UTF-8", locale_code);

# if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 \
    || _LIBICONV_VERSION >= 0x0105
     {
       size_t len = strlen (locale_code);
       char *locale_code_translit = (char *) xmalloc (len + 10 + 1);
       memcpy (locale_code_translit, locale_code, len);
       memcpy (locale_code_translit + len, "//TRANSLIT", 10 + 1);

       name_converted_translit = alloc_name_converted_translit =
         xstr_iconv (name_utf8, "UTF-8", locale_code_translit);

       free (locale_code_translit);
     }
# endif
#endif
   }
 else
   {
     name_converted = name_utf8;
     name_converted_translit = name_utf8;
   }

 /* The name in locale encoding.  */
 name = (name_converted != NULL ? name_converted :
         name_converted_translit != NULL ? name_converted_translit :
         name_ascii);

 if (translation != name_ascii)
   {
     /* See whether the translation contains the original name.
        A multibyte-aware strstr() is not absolutely necessary here.  */
     if (c_strstr (translation, name_ascii) != NULL
         || (name_converted != NULL
             && strstr (translation, name_converted) != NULL)
         || (name_converted_translit != NULL
             && strstr (translation, name_converted_translit) != NULL))
       {
         if (alloc_name_converted != NULL)
           free (alloc_name_converted);
         if (alloc_name_converted_translit != NULL)
           free (alloc_name_converted_translit);
         return translation;
       }
     else
       {
         /* Return "TRANSLATION (NAME)".  */
         char *result =
           (char *) xmalloc (strlen (translation) + 2 + strlen (name) + 1 + 1);

         sprintf (result, "%s (%s)", translation, name);

         if (alloc_name_converted != NULL)
           free (alloc_name_converted);
         if (alloc_name_converted_translit != NULL)
           free (alloc_name_converted_translit);
         return result;
       }
   }
 else
   {
     if (alloc_name_converted != NULL && alloc_name_converted != name)
       free (alloc_name_converted);
     if (alloc_name_converted_translit != NULL
         && alloc_name_converted_translit != name)
       free (alloc_name_converted_translit);
     return name;
   }
}