gcc/intl.c

   1 /* Message translation utilities.
   2    Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to the Free
  18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "tm.h"
  25 #include "intl.h"
  26
  27 #ifdef HAVE_LANGINFO_CODESET
  28 #include <langinfo.h>
  29 #endif
  30
  31 /* Opening quotation mark for diagnostics.  */
  32 const char *open_quote = "'";
  33
  34 /* Closing quotation mark for diagnostics.  */
  35 const char *close_quote = "'";
  36
  37 #ifdef ENABLE_NLS
  38
  39 /* Initialize the translation library for GCC.  This performs the
  40    appropriate sequence of calls - setlocale, bindtextdomain,
  41    textdomain.  LC_CTYPE determines the character set used by the
  42    terminal, so it has be set to output messages correctly.  */
  43
  44 void
  45 gcc_init_libintl (void)
  46 {
  47 #ifdef HAVE_LC_MESSAGES
  48   setlocale (LC_CTYPE, "");
  49   setlocale (LC_MESSAGES, "");
  50 #else
  51   setlocale (LC_ALL, "");
  52 #endif
  53
  54   (void) bindtextdomain ("gcc", LOCALEDIR);
  55   (void) textdomain ("gcc");
  56
  57   /* Opening quotation mark.  */
  58   open_quote = _("`");
  59
  60   /* Closing quotation mark.  */
  61   close_quote = _("'");
  62
  63   if (!strcmp (open_quote, "`") && !strcmp (close_quote, "'"))
  64     {
  65 #if defined HAVE_LANGINFO_CODESET
  66       const char *encoding;
  67 #endif
  68       /* Untranslated quotes that it may be possible to replace with
  69          U+2018 and U+2019; but otherwise use "'" instead of "`" as
  70          opening quote.  */
  71       open_quote = "'";
  72 #if defined HAVE_LANGINFO_CODESET
  73       encoding = nl_langinfo (CODESET);
  74       if (encoding != NULL
  75           && (!strcasecmp (encoding, "utf-8")
  76               || !strcasecmp (encoding, "utf8")))
  77         {
  78           open_quote = "\xe2\x80\x98";
  79           close_quote = "\xe2\x80\x99";
  80         }
  81 #endif
  82     }
  83 }
  84
  85 #if defined HAVE_WCHAR_H && defined HAVE_WORKING_MBSTOWCS && defined HAVE_WCSWIDTH
  86 #include <wchar.h>
  87
  88 /* Returns the width in columns of MSGSTR, which came from gettext.
  89    This is for indenting subsequent output.  */
  90
  91 size_t
  92 gcc_gettext_width (const char *msgstr)
  93 {
  94   size_t nwcs = mbstowcs (0, msgstr, 0);
  95   wchar_t *wmsgstr = alloca ((nwcs + 1) * sizeof (wchar_t));
  96
  97   mbstowcs (wmsgstr, msgstr, nwcs + 1);
  98   return wcswidth (wmsgstr, nwcs);
  99 }
 100
 101 #else  /* no wcswidth */
 102
 103 /* We don't have any way of knowing how wide the string is.  Guess
 104    the length of the string.  */
 105
 106 size_t
 107 gcc_gettext_width (const char *msgstr)
 108 {
 109   return strlen (msgstr);
 110 }
 111
 112 #endif
 113
 114 #endif /* ENABLE_NLS */