propername.c

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Hash : 26fd3545
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Date : 2025-09-16T23:08:01

stringeq: prefer streq to strcmp in other modules

* lib/acl-internal.c, lib/argmatch.c, lib/argp-help.c:
* lib/argp-parse.c, lib/bcp47.c, lib/c32_get_mapping.c:
* lib/c32_get_type_test.c, lib/concat-filename.c:
* lib/cpu-supports.h, lib/dfa.c, lib/duplocale.c, lib/exclude.c:
* lib/findprog-in.c, lib/findprog.c, lib/fopen.c, lib/freopen.c:
* lib/fts.c, lib/gen-uni-tables.c, lib/getfilecon.c:
* lib/getlogin.c, lib/getugroups.c, lib/hard-locale.c:
* lib/hashcode-named-file.c, lib/hashkey-string.c:
* lib/iconv_open.c, lib/idcache.c, lib/lc-charset-unicode.c:
* lib/localcharset.c, lib/localename-environ.c:
* lib/localename-unsafe.c, lib/mbs_endswith.c, lib/mountlist.c:
* lib/newlocale.c, lib/nl_langinfo.c, lib/nproc.c, lib/open.c:
* lib/os2-spawn.c, lib/parse-datetime.y, lib/popen.c:
* lib/progreloc.c, lib/propername.c, lib/pt_chown.c, lib/putenv.c:
* lib/qcopy-acl.c, lib/readutmp.c, lib/rpmatch.c:
* lib/setlocale-fixes.c, lib/setlocale.c, lib/sig2str.c:
* lib/spawni.c, lib/stat.c, lib/str_endswith.c, lib/streq.h:
* lib/striconveha.c, lib/struniq.h, lib/supersede.c:
* lib/time_rz.c, lib/unicodeio.c, lib/vasnprintf.c:
* lib/vc-mtime.c, lib/wctrans-impl.h, lib/wctype-impl.h:
Prefer streq to strcmp when either will do.
Do not make this change to files shared with glibc.
Do not make the change to test files, at least not for now.
* lib/gen-uni-tables.c (streq): New static function, in same style.
* modules/acl-permissions, modules/argp, modules/c32_get_mapping:
* modules/c32_get_type_test, modules/concat-filename:
* modules/cpu-supports, modules/dfa, modules/duplocale:
* modules/exclude, modules/findprog, modules/findprog-in:
* modules/fopen, modules/fopen-gnu, modules/freopen, modules/fts:
* modules/getlocalename_l-simple, modules/getlocalename_l-unsafe:
* modules/getlogin, modules/getugroups, modules/hard-locale:
* modules/hashcode-named-file, modules/hashkey-string:
* modules/iconv_open, modules/idcache, modules/localcharset:
* modules/localename, modules/localename-unsafe:
* modules/mbs_endswith, modules/mountlist, modules/newlocale:
* modules/nl_langinfo, modules/nproc, modules/open:
* modules/parse-datetime, modules/popen:
* modules/posix_spawn-internal, modules/propername:
* modules/pt_chown, modules/putenv-gnu, modules/qcopy-acl:
* modules/rpmatch, modules/selinux-h, modules/setenv:
* modules/setlocale, modules/setlocale-fixes, modules/sig2str:
* modules/spawn-pipe, modules/stat, modules/str_endswith:
* modules/streq, modules/striconveha, modules/supersede:
* modules/time_rz, modules/uchar-h, modules/unicodeio:
* modules/uniconv/base, modules/wctrans, modules/wctype:
(Depends-on): Add stringeq.

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lib/propername.c

/* Localization of proper names.
   Copyright (C) 2006-2025 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 <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Without this pragma, gcc 4.7.0 20111124 mistakenly suggests that
   the proper_name function might be candidate for attribute 'const'  */
#if _GL_GNUC_PREREQ (4, 6)
# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
#endif

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

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

#include "trim.h"
#if GNULIB_MCEL_PREFER
# include "mcel.h"
#else
# include "mbchar.h"
# include "mbuiter.h"
#endif
#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;
  bool multibyte_locale = MB_CUR_MAX > 1;
  size_t tsublen;
  if (! multibyte_locale)
    tsublen = strlen (tsub);

  while (*string != '\0')
    {
      const char *tsub_in_string = mbsstr (string, tsub);
      if (tsub_in_string == NULL)
        break;
      else
        {
          if (multibyte_locale)
            {
#if GNULIB_MCEL_PREFER
              char const *string_iter = string;

              char32_t last_char_before_tsub = 0;
              while (string_iter < tsub_in_string)
                {
                  mcel_t g = mcel_scanz (string_iter);
                  last_char_before_tsub = g.ch;
                  string_iter += g.len;
                }

              string_iter = tsub_in_string;
              for (char const *tsub_iter = tsub; *tsub_iter;
                   tsub_iter += mcel_scanz (tsub_iter).len)
                string_iter += mcel_scanz (string_iter).len;

              if (!c32isalnum (last_char_before_tsub)
                  && !c32isalnum (mcel_scanz (string_iter).ch))
                {
                  found = true;
                  break;
                }

              if (!*tsub_in_string)
                break;
              string = tsub_in_string + mcel_scanz (tsub_in_string).len;
#else
              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));
#endif
            }
          else
            {
              if ((string == tsub_in_string
                   || !isalnum ((unsigned char) tsub_in_string[-1]))
                  && !isalnum ((unsigned char) tsub_in_string[tsublen]))
                {
                  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 \
     || defined ICONV_SET_TRANSLITERATE
      {
        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 || (_LIBICONV_VERSION == 0x10b && defined __APPLE__)
            /* 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 (!streq (translation, name_ascii))
    {
      /* 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

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kc3-lang/gnulib/lib/propername.c

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lib/propername.c