gcc/intl.c

   1 /* Message translation utilities.
   2    Copyright (C) 2001, 2003, 2004, 2005, 2007 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 3, 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 COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "intl.h"
  25
  26 #ifdef HAVE_LANGINFO_CODESET
  27 #include <langinfo.h>
  28 #endif
  29
  30 /* Opening quotation mark for diagnostics.  */
  31 const char *open_quote = "'";
  32
  33 /* Closing quotation mark for diagnostics.  */
  34 const char *close_quote = "'";
  35
  36 #ifdef ENABLE_NLS
  37
  38 /* Initialize the translation library for GCC.  This performs the
  39    appropriate sequence of calls - setlocale, bindtextdomain,
  40    textdomain.  LC_CTYPE determines the character set used by the
  41    terminal, so it has be set to output messages correctly.  */
  42
  43 void
  44 gcc_init_libintl (void)
  45 {
  46 #ifdef HAVE_LC_MESSAGES
  47   setlocale (LC_CTYPE, "");
  48   setlocale (LC_MESSAGES, "");
  49 #else
  50   setlocale (LC_ALL, "");
  51 #endif
  52
  53   (void) bindtextdomain ("gcc", LOCALEDIR);
  54   (void) textdomain ("gcc");
  55
  56   /* Opening quotation mark.  */
  57   open_quote = _("`");
  58
  59   /* Closing quotation mark.  */
  60   close_quote = _("'");
  61
  62   if (!strcmp (open_quote, "`") && !strcmp (close_quote, "'"))
  63     {
  64 #if defined HAVE_LANGINFO_CODESET
  65       const char *encoding;
  66 #endif
  67       /* Untranslated quotes that it may be possible to replace with
  68          U+2018 and U+2019; but otherwise use "'" instead of "`" as
  69          opening quote.  */
  70       open_quote = "'";
  71 #if defined HAVE_LANGINFO_CODESET
  72       encoding = nl_langinfo (CODESET);
  73       if (encoding != NULL
  74           && (!strcasecmp (encoding, "utf-8")
  75               || !strcasecmp (encoding, "utf8")))
  76         {
  77           open_quote = "\xe2\x80\x98";
  78           close_quote = "\xe2\x80\x99";
  79         }
  80 #endif
  81     }
  82 }
  83
  84 #if defined HAVE_WCHAR_H && defined HAVE_WORKING_MBSTOWCS && defined HAVE_WCSWIDTH
  85 #include <wchar.h>
  86
  87 /* Returns the width in columns of MSGSTR, which came from gettext.
  88    This is for indenting subsequent output.  */
  89
  90 size_t
  91 gcc_gettext_width (const char *msgstr)
  92 {
  93   size_t nwcs = mbstowcs (0, msgstr, 0);
  94   wchar_t *wmsgstr = alloca ((nwcs + 1) * sizeof (wchar_t));
  95
  96   mbstowcs (wmsgstr, msgstr, nwcs + 1);
  97   return wcswidth (wmsgstr, nwcs);
  98 }
  99
 100 #else  /* no wcswidth */
 101
 102 /* We don't have any way of knowing how wide the string is.  Guess
 103    the length of the string.  */
 104
 105 size_t
 106 gcc_gettext_width (const char *msgstr)
 107 {
 108   return strlen (msgstr);
 109 }
 110
 111 #endif
 112
 113 #endif /* ENABLE_NLS */