/* Localization of proper names.
Copyright (C) 2006-2017 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
/* Without this pragma, gcc 4.7.0 20111124 mistakenly suggests that
the proper_name function might be candidate for attribute 'const' */
#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
#endif
#include <config.h>
/* Specification. */
#include "propername.h"
#include <ctype.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if HAVE_ICONV
# include <iconv.h>
#endif
#include "trim.h"
#include "mbchar.h"
#include "mbuiter.h"
#include "localcharset.h"
#include "c-strcase.h"
#include "xstriconv.h"
#include "xalloc.h"
#include "gettext.h"
/* Tests whether STRING contains trim (SUB), starting and ending at word
boundaries.
Here, instead of implementing Unicode Standard Annex #29 for determining
word boundaries, we assume that trim (SUB) starts and ends with words and
only test whether the part before it ends with a non-word and the part
after it starts with a non-word. */
static bool
mbsstr_trimmed_wordbounded (const char *string, const char *sub)
{
char *tsub = trim (sub);
bool found = false;
for (; *string != '\0';)
{
const char *tsub_in_string = mbsstr (string, tsub);
if (tsub_in_string == NULL)
break;
else
{
if (MB_CUR_MAX > 1)
{
mbui_iterator_t string_iter;
bool word_boundary_before;
bool word_boundary_after;
mbui_init (string_iter, string);
word_boundary_before = true;
if (mbui_cur_ptr (string_iter) < tsub_in_string)
{
mbchar_t last_char_before_tsub;
do
{
if (!mbui_avail (string_iter))
abort ();
last_char_before_tsub = mbui_cur (string_iter);
mbui_advance (string_iter);
}
while (mbui_cur_ptr (string_iter) < tsub_in_string);
if (mb_isalnum (last_char_before_tsub))
word_boundary_before = false;
}
mbui_init (string_iter, tsub_in_string);
{
mbui_iterator_t tsub_iter;
for (mbui_init (tsub_iter, tsub);
mbui_avail (tsub_iter);
mbui_advance (tsub_iter))
{
if (!mbui_avail (string_iter))
abort ();
mbui_advance (string_iter);
}
}
word_boundary_after = true;
if (mbui_avail (string_iter))
{
mbchar_t first_char_after_tsub = mbui_cur (string_iter);
if (mb_isalnum (first_char_after_tsub))
word_boundary_after = false;
}
if (word_boundary_before && word_boundary_after)
{
found = true;
break;
}
mbui_init (string_iter, tsub_in_string);
if (!mbui_avail (string_iter))
break;
string = tsub_in_string + mb_len (mbui_cur (string_iter));
}
else
{
bool word_boundary_before;
const char *p;
bool word_boundary_after;
word_boundary_before = true;
if (string < tsub_in_string)
if (isalnum ((unsigned char) tsub_in_string[-1]))
word_boundary_before = false;
p = tsub_in_string + strlen (tsub);
word_boundary_after = true;
if (*p != '\0')
if (isalnum ((unsigned char) *p))
word_boundary_after = false;
if (word_boundary_before && word_boundary_after)
{
found = true;
break;
}
if (*tsub_in_string == '\0')
break;
string = tsub_in_string + 1;
}
}
}
free (tsub);
return found;
}
/* 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 (mbsstr_trimmed_wordbounded (translation, name))
return translation;
else
{
/* Return "TRANSLATION (NAME)". */
char *result =
XNMALLOC (strlen (translation) + 2 + strlen (name) + 1 + 1, char);
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) \
&& !defined __UCLIBC__) \
|| _LIBICONV_VERSION >= 0x0105
{
char *converted_translit;
size_t len = strlen (locale_code);
char *locale_code_translit = XNMALLOC (len + 10 + 1, char);
memcpy (locale_code_translit, locale_code, len);
memcpy (locale_code_translit + len, "//TRANSLIT", 10 + 1);
converted_translit =
xstr_iconv (name_utf8, "UTF-8", locale_code_translit);
free (locale_code_translit);
if (converted_translit != NULL)
{
# if !_LIBICONV_VERSION
/* Don't use the transliteration if it added question marks.
glibc's transliteration falls back to question marks; libiconv's
transliteration does not.
mbschr is equivalent to strchr in this case. */
if (strchr (converted_translit, '?') != NULL)
free (converted_translit);
else
# endif
name_converted_translit = alloc_name_converted_translit =
converted_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);
/* See whether we have a translation. Some translators have not understood
that they should use the UTF-8 form of the name, if possible. So if the
translator provided a no-op translation, we ignore it. */
if (strcmp (translation, name_ascii) != 0)
{
/* See whether the translation contains the original name. */
if (mbsstr_trimmed_wordbounded (translation, name_ascii)
|| (name_converted != NULL
&& mbsstr_trimmed_wordbounded (translation, name_converted))
|| (name_converted_translit != NULL
&& mbsstr_trimmed_wordbounded (translation, name_converted_translit)))
{
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 =
XNMALLOC (strlen (translation) + 2 + strlen (name) + 1 + 1, char);
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;
}
}
#ifdef TEST1
# include <locale.h>
int
main (int argc, char *argv[])
{
setlocale (LC_ALL, "");
if (mbsstr_trimmed_wordbounded (argv[1], argv[2]))
printf("found\n");
return 0;
}
#endif
#ifdef TEST2
# include <locale.h>
# include <stdio.h>
int
main (int argc, char *argv[])
{
setlocale (LC_ALL, "");
printf ("%s\n", proper_name_utf8 ("Franc,ois Pinard", "Fran\303\247ois Pinard"));
return 0;
}
#endif